JPH0747694A - Inkjet recording device - Google Patents

Abstract

(57) [Summary] [Purpose] To eliminate various inconveniences caused by temperature rise. [Structure] An image is recorded on a recording material using a recording head (110B, C, M, Y) that ejects ink droplets according to data, and has a temperature sensor. If the temperature detected by the temperature sensor is in the first temperature range before the start of recording, the print start command is not accepted and a new recording operation is not started. Further, the temperature warning is displayed on the display (550). Further, when the temperature detected by the temperature sensor during the recording operation falls within the second temperature range higher than the first temperature range, the recording operation is interrupted. And indicator (5
It is displayed that the temperature is abnormal due to 50).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus for recording an image on a recording material by ejecting ink droplets according to data.

[0002]

2. Description of the Related Art Conventionally, there is known an apparatus for recording an image on a recording material by using an ink jet type recording head which ejects ink droplets according to image data. When the recording operation is started and continued by such a recording head, the temperature of the recording head gradually rises, and it may reach a dangerous temperature that may cause deterioration of the recording quality or even damage the recording head or the device. Resulting in.

Therefore, it has been proposed to monitor the temperature inside the recording head or the machine and interrupt the recording operation when a predetermined temperature lower than the dangerous temperature is reached to prevent further temperature rise.

[0004]

However, for example, when the temperature of the recording head is close to the temperature at which the recording operation should be interrupted immediately after the previous recording operation is completed, if the next recording operation is started as it is, the recording head There is a possibility that the recording operation will be interrupted immediately due to the temperature rise, and if such a state occurs, the recording material will be wasted and the operator will be bothered.

The present invention has been made in view of the above points,
It is an object of the invention to provide an inkjet recording apparatus capable of eliminating various inconveniences caused by temperature rise.

[0006]

In order to achieve the above object, the ink jet recording apparatus according to the present invention comprises:
In an inkjet recording apparatus that records an image on a recording material using a recording head that ejects ink droplets according to data, if the temperature detected by a temperature sensor before the start of recording is within a first temperature range, printing starts If the command is not accepted, the first warning is displayed, and if the temperature detected by the temperature sensor during the recording operation enters the second temperature range higher than the first temperature range, the recording operation is performed. It is characterized in that a second warning display different from the first warning display is displayed at the same time as the interruption.

As a result, when the temperature detected by the temperature sensor is within the first temperature range, no new recording operation is started. When the temperature detected by the temperature sensor during the recording operation falls within the second temperature range, the recording operation is interrupted. Further, different warning displays are displayed depending on whether the detected temperature is within the first temperature range or within the second temperature range.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.

1.1 Appearance FIGS. 1 and 2A and 2B show an example of a schematic configuration of the image forming apparatus of the present invention. This example is an image forming apparatus connectable to a host system that generates image information and control signals related to recording.

In these figures, reference numerals and names of respective parts,
The functions and meanings correspond as follows.

[0011]

[Table 1]

1.2 Internal (1) Internal of Recording System Unit FIG. 3 is a perspective view showing the paper feeding unit 300 in an open state in order to show an example of the internal configuration of the recording system unit 100.
The reference symbols correspond to the names, functions and meanings of the respective parts as follows. In this configuration, the recording head 110,
A control system including the cartridge tank 120 is disclosed in, for example, Japanese Patent Application Nos. Sho 58-244131 and Sho 58-2 by the present applicant.
The inkjet printer disclosed in Japanese Patent No. 44138 can be used.

[0013]

[Table 2]

(2) Inside of Paper Feeding Unit FIG. 4 is a perspective view showing the paper feeding unit 300 in an open state in order to explain the internal structure of the paper feeding unit 300. Reference numerals and names of respective parts, functions and meanings are shown. Correspond as follows.

[0015]

[Table 3]

(3) Inside of Controller Unit FIGS. 5A to 5C are explanatory views for explaining an example of the internal configuration of the controller unit 200. In this example, the controller unit 200 is arranged below the recording system unit 100. Further, the controller unit 200 is made independent of the recording system unit 100 to facilitate maintenance work and the like, and when the ink leaks inside the recording system unit 100 as described later, the leaked ink is blocked. A blocking plate for stopping and a member for guiding the ink to the drain tank 800 are provided to protect the controller unit 200 from ink leakage.

In FIGS. 5A to 5C, the reference numerals correspond to the names of parts, functions and meanings as follows.

[0018]

[Table 4]

2.1 Basic Operation Next, the basic operation of each part of the apparatus will be described.

(1) Power ON / OFF a. ON With the paper feeding unit 300 closed (state of FIG. 1), the power switch 1500 is tilted upward. At this time, BU
The SY lamp lights up and each part is checked.

If there is no abnormality, BUSY will be made after about 5 to 10 seconds.
The lamp goes off and the ON LINE lamp lights up, and the image data can be printed.

At this time, if the cap 140 is not joined to the head unit 110, it is automatically capped.

When an abnormality is found, an error code is displayed on the display panel.

When the paper feeding unit 300 is present, the cap is not automatically capped even if the head unit 110 is not capped. Since the cap is considered to be open regardless of the position of the cap, press the cap UP / DOWN switch to close the cap. b. OFF Turn the power switch 1500 down. (2) ON LINE mode and OFF LINE mode ON LINE mode is ON LINE lamp is lit, OFF LINE mode is ON LINE
The state where the lamp is off.

In the ON LINE mode, the form feed, the initialization and the printing of the image data can be performed by the control of the host system.

When in the OFF LINE mode, paper feed, check print, and recovery processing can be performed by pressing an internal switch.

Usually, the ON LINE mode and the OFF LINE mode are switched by pressing the ON LINE switch, but it is not possible to switch from the OFF LINE mode to the ON LINE mode in any of the following states.・ When the BUSY lamp is lit. -When the paper feeding unit is open. -When the head is not capped. -When it is displayed that an error has occurred. In addition,
Immediately after the power is turned on, this machine is in the ON LINE mode. (3) Paper Setting Method FIGS. 6A to 6E show an example of a mounting operation when fanfold paper is used as a recording medium.・ Check that the power is turned on. -Make sure the flap 400 is open. -Open the paper feeding unit 300. -Lift the deck lever 316A (Fig. 6 (A)). -Place the paper P on the paper deck section 310.

The orientation is such that the black rectangular mark (TOF mark) is on the back side of the left back side of the paper (Fig. 6).
(B)).・ Lower the deck lever 316A. -Open the lower paper feed mechanism (Fig. 6 (C)).・ Paper P is fed to lower feed roller 320 and lower pinch roller 33
Pass it through 0 (FIG. 6 (D)). -Passing the paper P through the upper roller along the paper guide 380 while opening the upper roller 350. At this time, the paper is kept outside the flap (FIG. 6 (E)).・ Close the lower paper feed mechanism so that the paper does not sag.・ Press the FF switch to feed the paper.

At this time, if the paper is placed in the wrong orientation, the TOF mark cannot be found and an error occurs and the operation stops. -Close the paper feeding unit 300. -Check that no error is displayed on the display panel. (4) Operation of Display Panel FIG. 7 shows an example of the configuration of the display panel 500, in which reference numerals and names of switches, correspondence between functions and effective times, and reference numerals and names of display devices and when lit. The correspondence with the meaning of is as follows.

[0030]

[Table 5]

[0031]

[Table 6]

FIG. 8 is an explanatory diagram for explaining the display contents of the 7-segment display 550. In this example, 3
It is assumed that the upper one digit 552 of the digits is used as a status display unit for displaying the status and the lower two digits 554 are used as an error display unit for displaying the error content, and a display as shown is displayed corresponding to the status and the error.
Further, the decimal points 555, 556, and 557 are respectively lit when a normal start-up, when there are a plurality of errors, and when the recording head assembly 130 is not mounted. (5) Switch operation inside the main body Fig. 9 shows an example of the switches and the display provided inside the mounting. Here, the correspondence between the reference numerals of the switches and the names, the functions and the valid times, and the correspondence between the reference numerals of the display and the meanings when the lights are as follows.

[0033]

[Table 7]

[0034]

[Table 8]

2.2 Supply and Replacement of Consumables Next, the modes of supply and replacement of consumables are as follows. (1) Taking out the paper P This can be performed by the following procedure.・ Check that the power is ON.・ All the printed parts of the paper P are flaps 400
And pushes the FF switch 520 until the paper P is fed.・ Cut the paper P with perforations. -Take out the paper P from the stacker 700. -Check that no error is displayed on the display panel 500. (2) Replenishment of ink The following procedure can be performed (see FIG. 3). -Open the paper feeding unit 300. -Press the cap UP / DOWN switch 11 to lower the cap 140 that protects the head unit 110 (if you press it once, the cap will drop to a fixed position even if you release your hand). -Pull out the cartridge 120.・ Insert a new cartridge. Cartridge 120
Arrays of B, 120C, 120M, 120Y are black from the left,
Cyan, magenta and yellow. -Press the cap UP / DOWN switch 11 to raise the cap 140 (if pushed once, the cap will rise to the fixed position even if the hand is released). -Close the paper feeding unit 300.

After the cap is raised, ink is sent from the cartridge tank to the fixed tank (not shown) by the pump. When this fixed tank is full, the pump stops and printing is possible. As this fixed tank, for example, Japanese Patent Application No. 58-244131-58-
The one disclosed in Japanese Patent No. 244138 can be used.

(3) Exchange of drain tank 800 FIGS. 10A to 10C show an example of the exchange procedure of the drain tank 800, and the process can be proceeded as follows. a. The lever 854 is raised (FIG. 10 (A)). b. Pull up the drain tank 800 (Fig. 10)
(B)). c. Pull out the drain tank cap 840 (Fig. 10).
(C)). d. Install a new drain tank in reverse order. e. A new drain tank sealing cap 842 can be attached to the removed drain tank.

In the figure, 820 indicates a waste ink tube.

FIG. 10D shows a sectional view of the installed state of the drain tank 800. Here, the drain tank 800 has a shape that matches the inclination of the holding member 852 and is held by this. The lever 854 is rotatably connected to the holding member 852 in the direction of arrow A with a size (illustrated by a one-dot chain line) whose tip matches the upper surface of the drain tank 800, and a holding member 85 is provided by a magnet member 853.
Contact with 2 is guaranteed. In this state, when a force is applied to the drain tank 800 in the direction of the arrow B in the drawing due to vibration or the like, the holding tank 852 attempts to move in the direction along the inclination of the holding member 852, but there is a lever 854 above and a rotation direction (illustration). Since it is a biting direction with respect to the direction of arrow A), the drain tank 800 does not come off from the position shown in the figure. Regarding replacement of the drain tank 800, it is sufficient to rotate the lever 854 first and then remove the drain tank 800 as described above.

As described above, the waste ink collecting container can be securely held and easily removed by the simple structure.

2.3 Measures for defective printing There are the following possible causes of defective printing. The ink inside the head tip (nozzle) evaporated and the viscosity increased. Air entered the nozzle. Air has accumulated in the liquid chamber that stores ink inside the head.

These can be removed by a recovery operation. To perform the recovery operation, the cap 100 is attached to the head 100.
40 must be joined. This operation is started by pressing the internal recovery switch 12.

The recovery processing lamp 13 is lit while this operation is being performed.

3.1 Details of Paper Feeding Unit FIG. 11 shows an example of a detailed configuration of the paper feeding unit 300. In the figure, first, 302 is a mounting base, and each part of the inside 300 of the paper feeding unit can be assembled around this base 302. 306 is a recording system unit 10
It is a panel that faces this when connected to 0,
The paper deck unit 310, the lower and upper paper feeding mechanisms, their opening / closing mechanisms 340, 370, the platen 392, etc.
The surface 306B facing the unit 100 serves as a gap reference surface for the head unit 110, which will be described later, while being exposed via 06A.

Reference numerals 302A and 302B are portions having a rotating shaft for rotating the paper feeding unit 300 with respect to the recording system unit 100. Reference numeral 1450 is a sensor for detecting joining with the recording system unit 100, and 1420 is a lock mechanism for surely joining.

Further, 3000 is a motor unit for driving the rollers 320 and 350, 325 is a motor 300.
A lower feed roller transmission mechanism including a pulley G1, a bearing, a retainer and the like for transmitting 0 rotation, and a transmission mechanism 355 for an upper feed roller including another slip plate 352 such as a pulley G2, a bearing and a retainer. .

(1) Paper Deck Section 310 FIGS. 12A to 12C show an example of the configuration of the paper deck section 310. Here, 311 is a recording paper stacking guide unit,
It has a side plate 311A serving as a reference surface for regulating the transport path in the initial stage, a front end guide 311D for obtaining a stable stacking state of the paper even when the paper feeding unit 100 is opened and closed. In this example, in order to set the paper easily, the bottom plate 312 is moved in the direction of the arrow M in FIG.
It has a structure in which it can be rotated and tilted about 2A as a fulcrum (see 2.1 (3) and FIGS. 6A to 6E for the method of setting the paper).

Further, in FIG. 12, reference numeral 315 denotes a recording paper pressing plate, which presses the recording paper toward the side plate 311A by two springs 313 and 314 mounted between the stacking part 311 and the side plate 311A. The dimension between the plates 315 and the recording paper width dimension are always matched. 12B and 12C show an example of a mechanism for holding the position of the pressing plate 315.

In FIG. 12B, the deck lever 316
When A is lifted, the lever member 316B rotates with the fulcrum 316D as a fulcrum, and the slide member 318 is pushed down.
The slide member is held in the hole 311C of the stacking guide portion 311 and is pushed up in the L direction in the drawing by the spring 319 to be fixed to the holding plate 315.
It has a structure that can be engaged with 7. In FIG. 12C, the slide member 318 and the wrap member 317 are engaged with each other,
It shows the state where the position 15 is held.

Further, as shown in FIG. 12B, since the lever member 316B and the bottom plate 312 are connected by the link member 316C having a rotatable fulcrum, the deck lever 3
By the operation of lifting 16A, the bottom plate 312 is lifted in the direction of the arrow N in the figure, and at the same time, the slide member 318 is lowered in the direction of the arrow M in the figure, the engagement state with the rack member 317 is released, and the holding plate 315 is in the free state. If the recording paper is installed here, the pressing plate 315 will be attached to the springs 313 and 31.
When the deck lever 316A is pushed down by stopping at the paper width position by 4, the pressing plate 315 is held at that position as described above.

As described above, the position of the recording paper having different paper widths can be regulated at the most upstream side of the conveying path by only one operation of setting the paper, and thereafter a stable conveying state can be realized. (2) Lower paper feed mechanism and lower roller opening / closing mechanism FIG.
Shows a configuration example of the lower paper feeding mechanism and the lower roller opening / closing mechanism.

The pinch roller 330 for pressing the recording paper P against the lower paper feed roller 320 is provided with an elastic member 332 near the central portion in the axial direction, and the roller 320 is provided at that portion.
The nip amount between and is obtained so that the holding state of the recording paper P can be obtained. 341 indicates the pinch roller 330 and the feed roller 32.
It is an opening / closing lever used to separate from 0.

Reference numeral 342 is a side plate for supporting the pinch roller 330 at both ends thereof, and the side plate 3 is provided around the shaft 343.
42 is rotatable. 344 is arm portions 344A, 344
B is a pinch roller arm having an arm portion 344A,
Pins 34 projecting from the side plate 342 between 344B
It is supported by 5, and can be rotated around it. Thus, the pinch roller 330 is moved by the arm portion 344A of the arm 344.
The other arm 344B and the side plate 342 of the rising portion 3
By tensioning the spring 346 between the pinch roller 330 and 42A, the pressing force of the pinch roller 330 against the feed roller 320 is obtained. Further, the side plate 342 is provided with a skew feeding prevention roller 338 at a position immediately before the recording paper P is nipped by the lower paper feed roller 320 and the pinch roller 330. By bringing the skew prevention roller 338 into contact with the recording paper P,
The weight of the recording paper P up to the paper deck portion 310 can be supported, and the wrap angle of the recording paper P with respect to the roller 320 can be increased. Further, when the side plate 342 is rotated around the shaft 343 by operating the opening / closing lever 341, both the pinch roller 330 and the skew feeding prevention roller 338 can be separated from the feed roller 320.

The open / close lever 341 is a pinch roller side plate 34.
A button 341A that is rotatable around a pin 342A protruding from the No. 2 and has one end that is pressed by the operator when releasing the pinch roller 330 or the like from the feed roller 320.
And a claw portion 341B engaging with a lock pin provided on the base 302 is provided at the other end. Further, a spring 349 is stretched between the button 341A of the lever 341 and the side plate 342 to give the lever 341 a turning tendency in the counterclockwise direction in the drawing, and a stable engagement state is maintained. To do so.

Further, the recording system unit side of the side plate 342 is a cam surface 342B engageable with the cap 140, and the side plate 342 rotates clockwise in the drawing in response to the engagement and the feed roller 320 and the pinch roller 330. To be engaged with. As a result, even if the operator forgets to close the lower paper feed mechanism after mounting the recording paper P, the lower paper feed mechanism closes with the movement of the cap 140, which will be described later. It becomes possible to prevent jams and the like.

(3) Recording Surface Forming Section FIG. 14A shows a recording surface forming section 39 including a platen 392.
A configuration example of the main part of 0 is shown. Here, reference numeral 393 is a hole provided in the pre-tenn 392, and the recording paper P is attracted to the platen surface by the fan 390F through this hole 393 to form a recording surface. 395 is a base 302 and a panel 3
A spring for swinging the platen with respect to 06, 394
Is a spring mounting portion provided on the platen 392, and 396 is a guide hole for a pin 309 protruding from the base 302. Reference numeral 397 is a sensor for detecting the recording paper.

Reference numeral 398 denotes a seal member made of an elastic body for maintaining airtightness when the recording surface forming portion 390 is attached to the attachment base 302. In addition, 399 is an ink mist collecting unit, which is a duct 399 attached to the platen 392.
A, a porous trap member 399B for collecting ink mist, an absorber 399 for absorbing the accumulated ink
Composed of C.

FIG. 14B is a cross-sectional view of the vicinity of the recording surface forming portion 390 in the printed state, showing the air flow inside it. The fine ink mist derived from the ejected ink droplets moves along the air flow in the vicinity thereof and adheres to the wall surface with which the air flow collides.

Here, the ink mist is collected by passing the air flow of the fan 390F for sucking the paper through the ink mist collecting section 399. FIG. 14C shows the details of the airflow. The ink mist accompanying the airflow is discharged from the hole of the platen 392 through the ink mist collecting portion 399.
When it enters the inside, it first collides with the trap member 399B and is collected there. Further, the ink mist that has entered by colliding with the wall surface of the duct 399A is completely collected and accumulated, and becomes an ink drop, which falls by gravity in the direction of arrow A in FIG. 14A and is absorbed by the absorber 399C. .
The operator can discharge the ink mist to the outside of the machine by replacing the absorber 399C.

As described above, it is possible to prevent the fine ink mist derived from the ejected ink droplets from being discharged to the outside of the machine by a simple method, and to stain the machine body. It is also possible to achieve this by providing a separate fan in addition to the fan 390F when forming the above-described airflow.

Further, as described later, the recording system unit 10
0 and the paper feeding unit 300 are connected, a pin provided on the front surface of the recording head unit 110 hits a panel 306 having a reference surface, and at this time, the assembly 130 swings to connect the nozzle and the reference surface of the head unit 110. Are kept parallel. At the same time, the platen 392 follows the swing of the assembly 130 via the protrusion provided on the assembly side by the spring 395, so that the recording surface of the recording paper P regulated by the platen 392 and the nozzle face each other with an appropriate gap. Become.

(4) Motor Unit FIG. 15 shows an example of the configuration of the motor unit 3000. Here, 3002 is a motor, which transmits the rotation of the rotating shaft 3004 to the pulley G20 associated with the lower feed roller transmission mechanism 325 via the pulley 3006 and the belt 3008. G3 is a pulley that is concentric with the pulley G20 and has a diameter smaller than that of the pulley G20. The rotation of this pulley G3 is transmitted to the pulley G2 of the upper feed roller transmission mechanism 355 via the belt 3010.

Here, the tooth ratio of each pulley is appropriately selected, and the lower feed roller 320 is provided on the upper feed roller 350 side.
The rotation speed is increased by about 2 to 3%.

(5) Upper feed roller and its transmission mechanism FIG. 16 shows an upper feed roller 350 and its transmission mechanism 35.
5 shows an example of the configuration of No. 5. Here, 353 is a bearing provided on the extension shaft 351 of the roller 350 to rotatably hold the pulley G2, and 352A and 352B are respectively
It is a slip plate provided on the pulley G2 and the shaft 351, and slides with the ring 354 and the pulley G2 fixed to the shaft 351 respectively. As a result, the rotational movement of the motor rotating shaft is transmitted to the roller 350 via the slip plates 352A and 352B, and at this time, the recording paper P is pulled up by the upper feed roller 350 in a state where tension is appropriately applied.

(6) Upper Pinch Roller and Paper Guide FIG. 17 shows an example of the configuration around the upper pinch roller 360. Reference numerals 362 ₁ and 362 ₂ are members having a portion 362B for holding the pinch roller 360 at both ends thereof, a portion 362A for restricting the axial displacement of the recording paper P when the recording paper P is attached and when the conveyance is started, and the like. .
One of the members is constantly pinched by the spring 372 (see FIG. 11) of the upper roller opening / closing mechanism 370.
Manual habit is given in the direction of pressing 60 toward the feed roller 350, and the upper paper feed mechanism is opened according to the operation of the opening / closing lever 374. These movements are linked lever 364
Is also transmitted to the other member 362. In this state, the operator can perform the mounting operation of the recording paper P.

At this time, the leading edge of the paper is guided and positioned by the guide 380 and the portion 362A at an appropriate position on the conveying path.

(7) Paper Feed Unit Cover FIG. 18 shows an example of the configuration around the paper feed unit cover 308. Here, 308A, 308B, and 308C are a delivery port for the recorded recording paper P (a mounting port for the flap 400), a mounting port for the display panel 500, and a mounting port for the hand lever 1400, respectively.

Reference numeral 410 is a flap lever for rotating the flap 400 around the shaft 412 to open / close the delivery port 308A, and 420 is an opening / closing control mechanism for restricting the opening / closing.

Reference numeral 510 is an attachment member for attaching the display panel 500 to the attachment opening 308B.

Reference numeral 308D is a groove portion having a mounting hole for the stacker 700, into which the stacker hinge 710 is inserted, which serves as a rotation fulcrum of the stacker 700. 790 is a stacker 70
For the positioning of 0, the clamp member attached to the front surface of the cover 308 holds the stacker 700 both during printing and during storage (described later).

(8) Flap opening / closing operation FIGS. 19A and 19B show a flap opening / closing control mechanism 42.
An example of the configuration of 0 is shown. Here, 422 is a flap 400
It is a flap stay that is rotatable around a shaft 402 provided in the, and has a bent portion 422A and a cam hole 422B.
A rotor 424 is rotatable around a shaft 432 provided on a base 430 fixed to the cover 308.
2A and a pin 424B that engages with the cam surface of the cam hole 422B.

20 (A), 20 (B) and 20 (C) show the flap 400 with the delivery port 308A closed.
The flap 400 to a predetermined position and the flap 400
Shows the state in which the delivery port 308A is opened by locking the.

From the state shown in FIG.
Is rotated clockwise around the shaft 412 to reach the position shown in FIG.
24B engages, the rotor 424 rotates counterclockwise around the shaft 432, and the state shown in FIG. 19A is obtained (however, in FIG. 19, the direction is opposite to that in FIG. 20). In this state, the flap 400 is rotated in the closing direction to
When the position shown in (C) is reached, the ear portion of the rotor 424 and the bent portion 422A of the flap stay 422 engage with each other, and this engagement causes further rotation of the flap 400 (counterclockwise direction in the figure). Is blocked. That is, at this time, the flap 400 is locked and the delivery port 308A is opened,
In this state, the recorded recording paper P can be delivered.
Since the flap 400 is locked even if the operator accidentally pushes the flap 400 or vibrates at the time of this delivery, the delivery port 308A is not closed.

When the delivery port 308A is closed, the flap 400 is rotated clockwise from the state shown in FIG. 20C to the position shown in FIG. After positioning, the locked state can be released, and the closed state as shown in FIG.

(9) Stacker Opening / Closing Operation FIGS. 21A to 21C are perspective views of the sheet feeding unit 300 seen from the front for explaining the opening / closing operation of the stacker 700. Here, the stacker 700 includes the following five points. That is, 710 is a cover 308 and rotatable stacker hinges 710 and 720 are stacker hinges 710 and a stacker base that is a rotatable paper stacking unit, and 730A and 73A.
0B is freely rotatable with the stacker base 720.
00 is a stacker arm for holding 00, and 740 is an elastic member attached to the stacker arm 730A. Also, 79
Reference numeral 0 is a clamp member for positioning and holding the stacker 700.

FIG. 21A shows the stacker 700 when it is not used. At this time, stacker arms 730A and 73
0B is in a folded state with respect to the stacker base 720, and the elastic member 740 contacts the front surface of the cover 308,
The stacker base 720 is fixed by the clamp member 790, and the stacker base 720 is put into the housed state. Further, in this state, the stacker base 720 guides the lower end of the flap 400, so that the vibration of the flap 400 can be suppressed.

FIG. 21B shows the opening / closing operation of the stacker 700. First, the clamp member 790 is opened to make the stacker base 720 movable, and the stacker arm 730
Open A and 730B and clamp each stacker arm
By fixing at 90, the use of FIG. 21 (C) is achieved.

As described above, when not in use, the stacker 700 can be folded and stored on the front surface of the paper feeding unit 300, so that the volume of the apparatus can be reduced.

(10) Position of Stacker FIG. 22 is a side view of the stacker 700 mounted in front of the paper feeding unit 300 when in use (when projected forward).

As shown in FIG. 22, the mounting position of the stacker 700 is provided below the flap 400 by an amount corresponding to the sum of the sheet stacking height (a dimension) and the sheet feeding direction width (b dimension). ing. It is desirable that the length of the sheet is as short as possible because static electricity is generated due to friction with the wall surface of the cover 308 and the jam easily occurs when a paper feeding length becomes long, and a member for removing the jam is required.

Further, since the stacker 700 is located above the peep window 600, the remaining amount of paper can be visually checked even during printing.

As described above, by installing the stacker 700 at a position as close as possible to the flap 400 serving as a paper outlet, that is, at a position separated by the sum of the paper stacking height and the width in the paper feed direction, a stable paper discharge state can be achieved.

3.2 Paper Feed Unit Lock Mechanism and Handle Lever (1) Lock Mechanism FIGS. 23 and 24 show the paper feed unit 300, respectively.
Locking mechanisms 1420 and 1 provided on the upper and lower sides of the
430. 1422 and 1432 are respectively
A claw 142 that is rotatable around shafts 1421 and 1431 and that engages with a locking member provided on the recording system unit 100 side.
2 is a lock lever having 2A and 1432A.

Reference numerals 1423 and 1433 are springs, which rotate the lock levers 1422 and 1432 in the engaging direction, respectively. 1424 and 1434 are provided between the shaft 1421 and the claw 1422A and the shaft 1431, respectively.
And pins 1432A provided between the handle lever 1400 and wires 1425 and 1435, respectively. That is, when the wires 1425 and 1435 are pulled downward and upward in response to the operation of the handle lever 1400, the lock levers 1422 and 1432 are rotated and the paper feeding unit 300 and the recording system unit 100 are connected. Is unlocked.

(2) Handle Lever FIG. 25 and FIG. 26 show the handle lever 14 respectively.
00 and an example of the structure of its transmission part. Where 1
401 is an operation handle, and has a pin 1402 connectable to the transmission shaft 1412. 1403 is a member having a mounting portion 1403A to the handle lever mounting hole 308C and a flange portion 1403B, 1404 is the flange portion 14
A seal member 1405 is provided on the seal member 1403 to give a habit of moving the member 1403 in the direction of the hole 308C.
4 for closely contacting 4 with the periphery of the hole 308C, 1406
Is a retaining ring for preventing each of these partial pins from falling off from 1402. That is, when the handle lever 1400 is attached, the seal member 1404 allows the attachment hole 3
The dustproof property around 08C is secured.

The transmission shaft 1412 is supported by the bearing member 1414 and is rotatable in response to the operation of the handle lever 1400. 1415 is a wire connecting member fixed to the transmission shaft 1412 and includes wires 1425 and 14 respectively.
It has pins 1416 and 1417 that connect with 35.

3.3 Controller Unit FIG. 27 shows a configuration example of the controller unit 200. In this example, the top plate 26 of the controller unit
Even if the ink leaks from the recording system unit 100, the controller unit 20 is formed by raising the peripheral portion of the opening 262 for ventilation and wiring at 0 to form the guide portion 264.
0 Make sure that no ink flows into the interior. In addition, a hole 266 for removing the leaked and stored ink is provided, and the tube 826 is connected to the hole 266. Tube 826
Is exposed to the outside from the side plate 270 and connected to the tube 820 so that the ink flowing out to the top plate 260 is guided to the drain tank 800. As a result, the inside of the controller unit 200 is protected against ink leakage from the recording system unit 100.

Although the tube 826 is connected to the tube 820 in this example, all the ink collected by the cap 140 is guided onto the top plate 260, and the ink is drained from the hole 266 through the tube to the drain tank 800. If it is made to lead to, the structure of the tube system can be made extremely simple.

3.4 Recovery System (1) Cap Opening / Closing Mechanism FIGS. 28 and 29 show a closed state and an open state of the cap 140 with respect to the cap cover 150. here,
141A and 141B are rails that guide the vertical movement of the cap 140, and 142A is a holding member that holds the cap 140 rotatably around a vertical axis and is slidable along the rail 141A. 143B is a rail 141
It is a member for connecting and disconnecting with the sliding member provided in B.
825 is a waste ink reservoir provided below the cap 140, to which a tube 820 is connected.

According to this structure, a sufficient work area is secured during maintenance work of the cap 140, and the work becomes extremely easy. Further, according to this example, since the cap 140 is rotatable about the vertical axis, it is possible to prevent the nozzles of the head from being contaminated by the color mixture of ink in the cap portion.

Further, in the figure, reference numeral 145 is a back surface of the cap, and this back surface 145 is used as the pinch roller side plate 34.
The second cam surface 342B can be engaged with the pinch roller 330.
When the units 100 and 300 are connected to each other while being opened, the lower paper feeding mechanism is closed with the downward movement operation of the cap 140.

(2) Cap Cover FIG. 30 and FIG. 31 respectively show the cap cover 15
FIG. 3 is a perspective view showing an example of the configuration of No. 0 and an explanatory view showing an engagement relationship with a cap 140. A spring 151 always gives the cap cover 150 a habit of moving to the cap side. Also, 152 is a portion 14 on the front surface of the cap 140.
It is a roller that can be engaged with 9.

The roller 152 and the portion 149 are disengaged from each other when the cap 140 is in the position facing the cap cover 150, and the spring 151 moves the cover 150 toward the cap 140 to cover the cap 140. It will be in a state of being. Thereby, the cap 140 can be protected from dryness, dust, and the like.

When the cap 140 is moved, the roller 1
52 rides on the portion 149, and the cover 150 retracts against the spring force.
The movement of 0 is undisturbed.

(3) Capping of Head Unit FIG. 38 shows the cap process for the head unit 110.
Therefore, it can be performed by the processing procedure described later. In order to obtain an appropriate and reliable engagement state at the cap position, in this example, as shown in FIG. 31, the concave portion 1 is formed on the front surface of the cap.
On the other hand, as shown in FIGS. 28 and 32, the head unit 110 side is provided with a convex portion 136 which can be fitted into the concave portion 146. Further, as described later, since the head assembly 130 is given a habit of moving to the cap side, when the cap 140 faces the head unit 110 by the processing described later, the convex portion 136 is fitted into the concave portion 146, and at this position. The movement of the cap 140 is blocked,
The cap 140 can be accurately and reliably positioned with respect to the head unit 110, and an appropriate recovery process can be performed.

3.5 Recording Head Assembly FIG. 32 shows an example of the configuration of the recording head assembly 130. As shown, the assembly 130 includes a reference surface 306.
A protrusion 132 that can be engaged with B, a protrusion 134 that can be engaged with the front surface of the platen 392, and a protrusion 136 that can be fitted into the recess of the cap 140 are provided. Reference numeral 138 is a fan for backing up the suction of the recording paper P to the platen 392 by the fan 390F.

The head assembly 130 is attached to the movable table shown in FIG.

3.6 Support Structure of Recording Head Assembly 130 in Recording System Unit FIG. 33 shows an exploded state of the support structure of the recording head assembly 130 in the recording system unit 100. Reference numeral 160 is a fixed base, and 170 is a movable base movably provided on the fixed base 160. The recording head assembly 130 is fixed on the movable table 170.

A drive mechanism 180 including a motor (pulse motor) for driving the movable table 170 is fixed to the lower surface of the fixed table 160. A screw is fixed to the tip of the motor shaft of the drive mechanism 180 via a universal joint, and a guide mechanism 181 for converting the motor rotation into a linear motion is coupled to this screw. The guide mechanism 181 projects upward from an opening 161 formed substantially in the center of the fixed base 160, and a part of the guide mechanism 181 is attached to the lower side of the movable base 170. Therefore, the movable base 1 is driven by the drive mechanism 180 via the guide mechanism 181.
Move 70.

The drive mechanism 180 is positioned and fixed to the fixed base 160 and the guide mechanism 181 is movable so that the movable base 170 moves back and forth in the direction orthogonal to the recording surface (when set) in the paper feeding unit 300. Attach to the stand 170.

On the upper surface of the fixed base 160, the opening 1
The guide rails 162 and 163 are fixed before and after 61. The direction of this rail coincides with the moving direction of the movable table 170. On the other hand, on the lower surface of the movable table 170,
The front guide roller 171 for mounting the guide rollers 171 and 172 whose axes are perpendicular to the front side and the rear side is located inside the front guide rail 162, and the rear guide roller 172 is provided.
Is located inside the rear guide rail 163. Therefore, the movable base 170 is restricted by these guide rails and guide rollers and moves on a predetermined road.

On the upper surface of the fixed base 160, the upper portion of the first receiving roller 164 fixed to the lower surface of the fixed base 160 projects through the opening 165. The axis of this roller 164 is the movable base 1.
It corresponds to the moving direction of 70. On the other hand, the second receiving roller 173 is fixed on the lower surface of the movable table 170 so as to face the first receiving roller 164 when the movable table advances (moves to the recordable position). The axis of the roller 173 is orthogonal to the axis of the first receiving roller 164. Further, the width of the front guide rail 162 is substantially equal to the diameter of the front roller 171 at the front portion thereof. Rear guide rail 1
The width of 63 is substantially equal to the diameter of the rear roller 172 at its rear portion and larger than the diameter of the rear roller 172 at its front portion. Therefore, since the front roller 171 is constrained and fixed by the front portion of the front guide rail 162 and the rear roller 172 is positioned at the front portion of the rear guide rail 163 when the movable table is moved forward,
The front roller 171 can be swung in a horizontal plane. At this time, the first receiving roller 16 on the fixed base side
Since the second receiving roller 173 on the movable table side is placed on the table 4, the swinging is performed more smoothly by these. Further, by this swinging, the positioning work of the recording head assembly 130 fixed to the movable table 170 with respect to the reference surface of the sheet feeding unit side of the assembly 130 can be performed very easily and smoothly.

On the other hand, as shown in FIG. 34, on the lower surface side of the fixed base 160, the movable base 170 is fixed when the movable base retreats.
The lock mechanism 183 for fixing to is fixed.
The lock mechanism 183 includes a solenoid 184 and a lock lever 185 that is driven by the solenoid and rotates in a vertical plane. The lock lever 185 has a groove 185A formed on the upper side of the rotation tip thereof. Lock lever 18
Reference numeral 5 projects to the upper surface side of the fixed base 160 through an opening 166 formed in the fixed base 160. An engagement pin 174 is fixed to the lower surface side of the movable table 170. The engagement pin 174 is positioned so as to reach directly above the pivoting tip of the lock lever 185 when the movable table 170 is retracted. Therefore, by operating the solenoid 184 when the movable table 170 is retracted, the engagement pin on the movable table 170 side is engaged with the groove 185A of the pivoting tip of the lock lever 185. As a result, the movable base 170 (and therefore the recording head assembly 130) is securely fixed and supported by the fixed base 160 (for example, the recording head assembly 130 is surely fixed to the recording head unit when the apparatus is transported).

In the connected state of the recording head unit 100 and the paper feeding unit, when the movable table is moved forward, the above-described swinging effect of the movable table 170 causes the positioning projection on the front surface of the recording head assembly 130 as shown in FIG. 1
32 surely contacts the reference surface 306B of the paper feeding unit 300. Further, in this state, the platen 392 is pressed by another positioning protrusion 134 on the front surface of the recording head assembly 130 by the spring force, and the recording surface of the recording paper P regulated by the platen 392 is the nozzle of the assembly 130. Is reliably positioned with respect to.

4. Configuration of Control System FIG. 35 is a block diagram showing the electrical configuration of the entire image forming apparatus to which the present invention is applied. In the figure, HC is a host computer for sending image information to be recorded via an optical fiber.

MD is a modulator / demodulator that performs mutual conversion between an optical signal and an electric signal.

CC is a communication controller, which extracts only image data (image data) from the data signal obtained from the host computer HC,
It has a function of sending to the image memories IMM and IMS.

MP is a main processor including a CPU and performs various controls of the entire apparatus.

MC is a mechanical controller including a CPU, which communicates with a head assembly mechanism to be described later, a pulse motor M1 for feeding fanfold recording paper, a DC motor M2 for moving a cap up and down, and a head assembly. The rotation control of the pulse motor M3 and the like for horizontally moving back and forth is performed.

The recording head unit has four recording heads (Y, M, C, B), and image memories IMM, I
An image is formed on a recording paper (fanfold paper) based on the image data obtained from the MS. At this time, ink supply / recovery processing to each part of the head is performed under the control of the head assembly mechanism AM.

In the present embodiment, each of the above blocks is incorporated on an individual printed board. Also,
The image memory has a storage capacity of 1 megabyte for both the master and the slave.

Next, with reference to FIG. 36, an outline of the operation of the present apparatus performed when the power is turned on will be described.

First, when the power is turned on (step S1), each unit having a CPU (M shown in FIG.
(P, MC, AM) is the memory check for each unit.
Performs various hardware checks such as port status checks.

Next, the main control of the entire apparatus is transferred to the main processor MP, and various system error checks such as presence / absence of recording paper, presence / absence of ink, open / closed state of the door, attached state of the recording head 110, etc. are performed (step S3).

As a result, if it is determined that there is no error (step S4), the online mode is set and communication with the host computer HC is enabled (step S5).

In the online mode, the image data sent from the host computer is stored in the image memory I.
When a predetermined amount is accumulated in the MM and IMS, the cap is lowered, the head assembly is moved forward to the printing position, and printing (image formation) is performed (step S6). Image data is continuously supplied to the host computer H during this printing.
It is received from C (that is, writing and reading of image data are performed asynchronously). Such a printing operation is repeatedly performed unless an error occurs (step S7).

If the switch is pressed while the online mode is set in step S5, the apparatus is disconnected from the host computer HC and enters the offline mode (step S8).

Next, a test print, which will be described in detail later, is performed (step S9). The test pattern used in this test print is stored in a ROM (not shown). Then, when the predetermined amount of the test pattern has been printed, the test printing is automatically stopped. Then, to return the apparatus to the online mode, the switch may be pressed again (steps S8 → S5).

When the occurrence of an error is detected in step S7, this apparatus is set to the offline mode (step S10). Since this error is a condition such as jam occurrence, recording paper run-out, no ink, etc., these error causes are removed (step S11), and the switch is pressed to return the apparatus to the online mode (step S12).

FIG. 37 is a flow chart for explaining the operation of this apparatus at the start of normal printing.

First, when the power is turned on (step S2
0), the recording head assembly is retracted to the home position (step S21), and then the cap is lowered (step S22). After that, the recording head assembly is advanced by the pulse motor and stopped at the print position corresponding to the predetermined number of pulses (step S23).

Then, head control for printing is performed (step S23).

FIG. 38 is a flow chart showing the control means for covering the cap on the front surface of the recording head assembly.

First, the recording head assembly is retracted to the home position. When the assembly reaches the home position, a predetermined output is obtained from the home position sensor (step S30).

Next, add +2 to the DC motor for driving the cap.
4V is applied to raise the cap (step S3
1).

When the cap is raised and reaches a predetermined cap position, a sensor output indicating that fact is obtained,
At that time, the voltage applied to the DC motor is changed to + 5V (step S32). Because of this, the cap is D
C motor torque is kept in equilibrium and stopped.

After that, a predetermined pulse number is supplied to the pulse motor for driving the recording head assembly, and the assembly is moved to the cap position (step S3).
3).

Since the tip of the recording head assembly has already penetrated to the inside of the cap, D for driving the cap is used.
The C motor is disconnected from the power source (step S34). Thus, the cap is lowered by its own weight and engages the printhead assembly. With the above, the cap operation is completed.

Communication between the host computer or host system and the image forming apparatus will be described below.

Format and Type of Data (1) Command Data The format of command data exchanged between the host system and the image forming apparatus is as follows. Type 1 (no operand) <FLAG><CLASS><N><CMD><FC
S><FLAG> (N = 1) Type 2 (with operand) <FLAG><CLASS><N><CMD><OP
R><FCS><FLAG> (N = 2) The types of command data sent from the host system to the image forming apparatus are as follows.

[0131]

[Outer 1]

The types of command data sent from the image forming apparatus to the host system are as follows.

[0133]

[Outside 2]

(2) Image data The format of image data is as follows. <FLAG><CLASS><N><DH><yell
ow image data (111 words)>
<DT><DH><magenta image data (1
11 words)><DT><DH><cyan image data (111
words><DT><DH><black image data (111
words)><DT><FCS><FLAG> (N = 452) The meanings of the symbols are as follows.

[0135]

[Outside 3]

Communication Protocol (1) Status The host system must send the status request command and check the status of the CGR before sending command data and image data to the CGR. However, command data such as status request ('M', 'N',
Not required when sending'W ').

The status word consists of 16 bits,
It has the following meaning.

[0138]

[Outside 4]

Which bit of the status is to be checked differs for each command. The state of each bit of the status word when a command can be executed and image data can be input is shown below.

[0140]

[Table 9]

(2) Command data The protocol for receiving command data is as follows.

[0142]

[Outside 5]

(3) In the case of image data The protocol from the print start command reception to the image data reception is as follows.

[0144]

[Outside 6]

Communication error In communication between the host system and the image forming apparatus, when the following processes are executed to the end, the host system judges that there is an error in the hardware of the communication system and recovers. Must be treated for.

[0146]

[Outside 7]

When the data transmission speed cannot keep up with the print speed The image data sent from the host system is temporarily stored in a buffer inside the printer and then printed. When the data transmission speed from the host system cannot keep up with the printing speed and the buffer becomes empty, printing is interrupted. Printing is resumed when the buffer is filled with image data. However, if the buffer is not filled with image data even after 3 minutes, the head is capped. Also in this case, if the buffer is filled with image data, printing is resumed.

Next, the types of errors that occur in the present image forming apparatus and their treatment will be described.

Related to Paper, Head and Ink (1) Paper Jam Paper jam occurred during printing or feeding of paper. Alternatively, a paper jam was detected when the power was turned on.

[0150]

[Table 10]

(2) No Paper The paper is used up during printing or feeding the paper. Alternatively, it was detected that there was no paper when the power was turned on.

[0152]

[Table 11]

(3) Paper setting error The paper is set in the wrong direction.

[0154]

[Table 12]

(4) No ink Insufficient amount of ink required for printing is exhausted.

[0156]

[Table 13]

(5) Setting error of recording head unit It was found that no recording head unit was set when the power was turned on.

[0158]

[Table 14]

Abnormal Temperature This machine has a temperature sensor and performs the following operation according to the temperature inside the machine.

[0160]

[Table 15]

Power supply-related (1) A voltage drop of the Power fail AC was detected.

[0162]

[Table 16]

(2) Overload A current exceeding the rating has flowed from the DC power supply device in this machine.

[0164]

[Table 17]

(1) Mechanical Controller MC Hard Error An unrecoverable error occurred due to a mechanic other than the recording head assembly.

[0166]

[Table 18]

(2) Mechanism AM for head assembly
Hard error An unrecoverable error has occurred in the recording head assembly.

[0168]

[Table 19]

Finally, the maintenance of the image forming apparatus will be described.

Switch in Card Rack A switch used for maintenance is provided on a board in the card rack. The arrangement is as shown in FIG. 39.

Check print (1) Purpose of use There are four types of test patterns that can be printed by the check print function. One of four patterns can be selected with the test pattern changeover switch in the card rack. These patterns are used for the purpose shown in FIG.

(2) How to use Confirm that the unit is in the following state.

-No error has occurred.

OFF LINE mode.

-The BUSY lamp is not lit.

The head is capped.

The paper feeding unit is closed.

One of the four types of patterns is selected by the test pattern changeover switch in the card rack.

Press the CHECK switch on the display panel.

On the display panel

[0181]

[Table 20] Is displayed and the BUSY LED lights up. Check print starts after about 15 seconds.

After the check print is finished, this machine is turned off.
If you are in LINE mode and there are no errors,
Normal operation can continue.

Registration Adjustment This is an adjustment for adjusting the ink ejection position of each color to eliminate the printing deviation between the colors. The ejection position is changed by using the registration adjustment switch, and the deviation of printing is confirmed by the test pattern (number 0).

(1) Registration adjustment switch A lateral registration adjustment switch for adjusting the print position in the direction perpendicular to the paper feed direction (horizontal direction) and a print position in the direction parallel to the paper feed direction (vertical direction). There is a vertical registration adjustment switch for adjusting.

A. Horizontal registration adjustment switch One for each color is provided.

When the switch instruction value is increased, the printing position moves to the right (when the paper feeding direction is up). When the value indicated by the switch is reduced, the print position moves to the left (when the paper feed direction is up).

-1 mm to +7/8 mm in units of 1/8 mm
It can be adjusted within the range.

B. Vertical registration adjustment switch The heads for each color are divided into upper and lower stages. Adjustment switches for the upper head and the lower head are provided for each color. The switch for the upper head does not affect the print position of the lower head (and vice versa).

Each of the upper head switch and the lower head switch is a set of two switches. One of the two is for coarse adjustment (adjustment in 1/2 mm units), and the other one is for fine adjustment (1/32 mm adjustment).

When the switch instruction value is increased, the printing position moves downward (when the paper feeding direction is up). When the value indicated by the switch is reduced, the print position moves up (when the paper feed direction is up).

-4 mm to + (3 + 3) in units of 1/32 mm
It can be adjusted in the range of 1/32) mm.

FIG. 41 illustrates the above relationship.

(2) Adjustment procedure Step 1 Set all the lateral registration adjustment switches to the reference position (7).

Step 2 Set all the vertical registration adjustment switches to the reference position (coarse adjustment: 8, fine adjustment: 0).

Step 3 Set the test pattern changeover switch to 0.

Step 4 Press the CHECK switch to perform check printing.

Step 5 : Look at the broken line pattern portion of the test pattern obtained in Step 4.

It is determined how much the cyan, magenta, and yellow lines deviate from the black line in the left and right directions.

Step 6 According to the result of Step 5, the lateral registration adjustment switches for cyan, magenta, and yellow are operated.

For example, if the cyan line is displaced from the black line by 2 dots (2/8 mm) to the left, the cyan lateral registration adjustment switch is turned to set it to 9.

Step 7 Press the CHECK switch again to perform check printing. If the adjustment is insufficient, repeat steps 5-6.

When there is no misalignment between the colors in the horizontal direction, the process proceeds to step 8.

Step 8 : Look at the printed portion of the upper head of the test pattern obtained in Step 7.

Attention is paid to the bent portion of the polygonal line pattern portion and the entire linear pattern portion.

It is measured how much the cyan, magenta, and yellow lines deviate from the black line in the upper and lower directions.

Step 9 : According to the result of step 8, the vertical registration adjusting switch for the upper head is operated for each color of cyan, magenta and yellow.

Step 10 Press the CHECK switch to perform check print.
If the adjustment is insufficient, repeat steps 8-9.

When there is no misalignment between the colors in the vertical direction in the printed portion by the upper head, the process proceeds to step 11.

Step 11 Look at the printed portion by the lower head of the linear pattern portion of the test pattern obtained in step 10.

It is measured how much the printed portion by the lower head of each of black, cyan, magenta, and yellow deviates from the printed portion by the upper head in the up and down direction.

Step 12 : According to the result of Step 11, the vertical registration adjusting switch for the lower head of each color of black, cyan, magenta and yellow is operated.

Step 13 Press the CHECK switch to perform check print.
If the adjustment is insufficient, repeat steps 11-12.

Vop adjustment Head voltage (Vo adjustment) set to eject ink
p) is different for each recording head unit (even if it is the same color, it differs depending on the unit).

Therefore, when the recording head unit is replaced, it is necessary to adjust Vop in the following procedure (see FIG. 4).
2 and FIG. 43).

Insert the specified digital tester terminal into the Vop monitor terminal of the replaced recording head unit (left side (black)-, right side (red) +).

While pressing the Vop monitor switch, adjust the volume to the voltage value written on the upper part of the recording head unit.

5. Modified Example of Recording Surface Forming Unit The recording surface positioned with respect to the recording head unit can be formed as follows.

First, in the above-mentioned example, the assembly 130
The fan 138 provided at the position is operated so as to blow air from the assembly 130 side toward the platen 392 side in order to back up the suction of the recording paper P to the platen 392. Assembly 13
The fan 138 is operated in the opposite direction so as to be attracted to the front surface of 0. In this case, on the front surface of the assembly 130, the height of the horizontal linear protrusions 115 arranged above and below the recording head from the front surface of the assembly 130 is made higher than the height of the recording head. Further, the operation of the fan 390F for attracting the recording paper P to the platen 392 is stopped. By doing so, the fan 138
The recording paper P is attracted to the front surface of the assembly 130 by the suction action of the recording paper P, and the recording paper P is
The distance between the surface of and the recording head can be maintained properly,
Recording can be stably performed on the recording paper P. Further, while the fan 138 is continuously operated, the heater for heating the recording head is controlled based on the detection result of the temperature sensor provided in the recording head assembly 130 so as to keep the temperature in the assembly 130 constant.

[0219]

As described above, according to the present invention, when the temperature detected by the temperature sensor before the start of recording is in the first temperature region, the print start command is not accepted and the first warning is displayed to record. When the temperature detected by the operating temperature sensor enters the second temperature range, which is higher than the first temperature range, the recording operation is interrupted and the second warning is displayed. In the case of a high temperature state that is close to the temperature to be interrupted, it is possible to prevent the start of a new recording operation and distinguish whether the detected temperature is in the first temperature range or the second temperature range, It is possible to improve the usability of the operator without wasting the recording material.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a schematic configuration of an image forming apparatus of the present invention.

FIG. 2 is a perspective view showing an example of a schematic configuration of an image forming apparatus of the present invention.

FIG. 3 is a perspective view showing the paper feeding unit in an open state in order to show an example of the internal configuration of the recording system unit 100.

FIG. 4 is a perspective view showing the paper feeding unit in an open state in order to explain the internal structure of the paper feeding unit.

FIG. 5 is an explanatory diagram illustrating an example of an internal configuration of a controller unit.

FIG. 6 is a diagram showing an example of a mounting operation when fanfold paper is used as a recording medium.

FIG. 7 is a plan view showing a configuration example of a display panel.

FIG. 8 is a diagram for explaining display contents of a 7-segment display.

FIG. 9 is a diagram showing an example of a switch and a display provided inside the device.

FIG. 10 is a diagram showing an example of a drain tank replacement procedure.

FIG. 11 is a diagram illustrating an example of a detailed configuration of a paper feeding unit.

FIG. 12 is a diagram illustrating an example of a configuration of a paper deck unit.

FIG. 13 is a diagram showing a configuration example of a lower paper feeding mechanism and a lower roller opening / closing mechanism.

FIG. 14 is a diagram illustrating a configuration example of a main part of a recording surface forming unit including a platen.

FIG. 15 is a diagram showing a configuration example of a motor unit.

FIG. 16 is a diagram showing a configuration example of an upper feed roller and a transmission mechanism thereof.

FIG. 17 is a diagram showing an example of the configuration around the upper pinch roller.

FIG. 18 is a diagram showing a configuration example of the periphery of a paper feeding unit cover.

FIG. 19 is a diagram showing a configuration example of a flap opening / closing control mechanism.

FIG. 20 is a diagram showing a state in which the delivery port is closed, a state in which the flap is rotated to a predetermined position, and a state in which the flap is locked and the delivery port is opened.

FIG. 21 is a perspective view of the paper feeding unit seen from the front for explaining the opening / closing operation of the stacker.

FIG. 22 is a diagram showing a side surface of the stacker attached to the front of the paper feeding unit when in use.

FIG. 23 is a diagram showing lock mechanisms provided on the upper side and the lower side of the paper feeding unit.

FIG. 24 is a diagram showing lock mechanisms provided on the upper side and the lower side of the paper feeding unit.

FIG. 25 is a diagram showing an example of a configuration of a handle lever and a transmission portion thereof.

FIG. 26 is a diagram showing an example of a configuration of a handle lever and a transmission portion thereof.

FIG. 27 is a diagram showing a configuration example of a controller unit.

FIG. 28 is a view showing a closed state of the cap with respect to the cap cover.

FIG. 29 is a view showing an open state of the cap with respect to the cap cover.

FIG. 30 is a perspective view showing an example of the configuration of a cap cover.

FIG. 31 is a perspective view showing an example of the configuration of a cap cover.

FIG. 32 is a diagram showing an example of a configuration of a recording head assembly.

FIG. 33 is a diagram showing a disassembled state of the support structure of the recording head assembly in the recording system unit.

FIG. 34 is a diagram showing an example of a combined state of a fixed base and a movable base.

FIG. 35 is a block diagram showing an example of the electrical configuration of the entire image forming apparatus to which the present invention has been applied.

FIG. 36 is a flowchart showing an example of the operation according to the present invention.

FIG. 37 is a flowchart showing an example of an operation according to the present invention.

FIG. 38 is a flow chart showing an example of the operation according to the present invention.

FIG. 39 is a diagram showing an example of arrangement of switches.

FIG. 40 is a diagram showing an example of a test pattern.

FIG. 41 is a diagram showing a registration adjustment mode.

FIG. 42 is a diagram showing a structure near a monitor terminal.

FIG. 43 is a diagram showing an example of a head voltage adjustment mechanism.

[Explanation of symbols]

100 recording system unit 110B, 110C, 110M, 110Y recording head unit 120B, 120C, 120M, 120Y cartridge tank 130 recording head assembly 140 cap 150 cap cover 200 controller unit 210 power supply device 220B, 220C, 220M, 220Y Vop monitor terminal 230 Vop Monitor switch 240 Card rack 250 Overload lamp 300 Paper feed unit (conveyance system unit) 310 Paper deck 320 Lower feed roller 330 Lower pinch roller 340 Lower roller opening / closing mechanism 350 Upper feed roller 360 Upper pinch roller 370 Upper roller opening / closing mechanism 380 Paper Guide 390 Recording surface forming part 400 Flap 500 Display panel 600 Peephole 7 0 stacker 800 drain tank 900 pocket 1000 first optical fiber connectors 1100 second optical fiber connectors 1200 power input connector 1300 Power output connector 1400 handle lever 1500 power switch

Claims (3)

[Claims] 1. An ink jet recording apparatus for recording an image on a recording material using a recording head for ejecting ink droplets according to data, wherein a temperature detected by a temperature sensor before starting recording is within a first temperature range. In the case of, the print start command is not accepted, the first warning is displayed by the display unit, and the temperature detected by the temperature sensor during the recording operation is in the second temperature range higher than the first temperature range. When it is entered, the inkjet recording apparatus is characterized in that the recording operation is interrupted and the display unit displays a second warning display different from the first warning display. 2. The ink jet recording apparatus according to claim 1, wherein an operation other than recording is enabled when the recording operation is interrupted. 3. The ink jet recording apparatus according to claim 2, wherein the operation other than the recording includes a paper feeding operation by an input from a predetermined switch.