JPH04133919A - recording device - Google Patents

Abstract

PURPOSE:To simplify a driving power transmitting mechanism in the titled device of a copying machine or the like by rotating an epicyclic gear according to the rotational direction of a driving means to selectively drive plural feeding means to change over driving power transmission for the plural feeding means. CONSTITUTION:A gear 8i is mounted on the shaft 8d1 of a feeding roller 8d in the first feeding means 8 to form a gear mechanism having epicyclic gears 32, 34 attached to a rotatable lever not shown in the figure. A belt 30 is extendingly wound over a pulley 31 gearingly connected to the gear 32, a pulley 9h mounted on the shaft 9g1 of the feeding roller 9g of the second feeding means 9 and a motor 16. When the motor 16 is rotated in a (a) direction, the epicyclic gear 34 is oscillated in a F direction to stop driving power transmission toward the first feeding means 8, and the second feeding means 9 is therefore rotated through the connection of an one-way clutch not shown in the figure. The motor 16 is rotated in a (b) direction to reverse the driving power transmission.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a recording device such as an electronic typewriter, copier, or printer that separates and feeds sheet materials one by one to record. be.

<Prior Art> Conventionally, recording devices such as electronic typewriters and printers are equipped with sheet material feeding devices for automatically feeding sheet materials. This allows continuous printing by setting several dozen sheets at a time and automatically feeding them one by one.

In general, a method for separating and feeding a bundle of sheets one by one is to separate and feed only one sheet using a pair of separation claws that engage the left and right ends of the sheet material in the feeding direction. The separation claw method and the gap separation method, in which a gap equal to the number of sheets to be fed is created and only one sheet is fed at a time, are well known.

<Problem to be solved by the invention> However, the sheet material that can be used in the above feeding method is
In order to ensure separation of the sheet materials, the stiffness, thickness, etc. of the sheet materials are limited.

Therefore, when automatically feeding stiff sheet materials such as envelopes or thick paper such as postcards and Christmas cards, a dedicated feeding device is generally used, and multiple feeding devices can be selected. a transmission control means for transmitting a driving force, and a planetary gear rotates according to the rotational direction of the second driving means to transmit the driving force to the first feeding means or the second feeding means. It is characterized by switching.

<Operation> According to the above configuration, the planetary gear rotates according to the rotational direction of the second drive means, and the transmission of the driving force can be switched to the first feeding means or the second feeding means.

<Embodiment> Next, an embodiment in which the above-mentioned means is applied to a serial type bubble jet type recording apparatus will be described.

FIG. 1 is a cross-sectional view of the recording device, FIG. 2 is a perspective view showing its external configuration, FIGS. 3 to 6 are perspective views showing its main parts, and FIG. 7 is a configuration explanatory view of the recording head. , Figure 8 (
a) - ((2) is an explanatory diagram of the bubble jet recording principle, Figs. 9 to 12 are explanatory diagrams of parts of the second feeding means, and Fig. 13 is an explanatory diagram of the bubble jet recording principle.
17 to 17 are explanatory diagrams of the feeding operation of the second feeding means, and FIG. 18 shows the control means. Generally speaking, the mechanism to be fed is complicated, including a clutch mechanism, many gear trains, etc., and is costly. There was a risk of getting high.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art described above and to provide a recording device that uses planetary gears as means for selectively transmitting driving force to a plurality of feeding means.

<Means for Solving the Problems> Typical means for solving the above-mentioned problems of the prior art and applied to the embodiments described below are first and second methods for loading sheet materials in a feedable manner. a feeding means, a platen for conveying the sheet material fed by the first and second feeding means, a recording means for forming an image on the sheet material according to image information, and the platen. a first driving means for driving the first and second feeding means, a second driving means for selectively driving the first and second feeding means, and a device provided between the first and second feeding means and the platen. FIG. 19(a) is a diagram showing a first detection means for detecting a sheet material that has been removed, and a detection signal from the second detection means to control the driving of the first drive means.
(b) is a flowchart 1 showing the control operation.

〔overall structure〕

First, in FIG. 2, A is a recording section, and there are recording nozzles 1. It has a built-in platen 7, driving means, etc.

On the exterior of the recording section, LEDs 41a and 41b, which serve as selection display sections for the feeding means, are installed. Also 44
45 is a knob connected to the rotating shaft of the platen 7, and 45 is a power switch.

Reference numeral B denotes a sheet material feeding section for feeding sheet materials to the recording section A, which includes a first feeding means 8, a second feeding means 9, an ejection stun force 13, and a manual feeding guide 14. etc.

Next, referring to FIG. 1, a schematic configuration of the recording apparatus will be described.

In FIG. 1, reference numeral 1 denotes a recording head which is a recording means, and in this embodiment, an ink cartridge If employing an inkjet recording method is used.

Reference numeral 2 denotes a carriage on which the recording head 1 is mounted and is capable of reciprocating in the width direction of the sheet +13. This carriage 2
A card holder 3a is protruded from the rear shaft 3b to make it easier to wrap the sheet material 3 around a platen 7, which will be described later.
, is configured to be movable along the front rail 3c. Further, as shown in FIGS. 3 to 6, a part of a heald 5, which is hooked to pulleys 4a and 4b, is connected to the carriage 2, and the pulley 4a is driven by the carriage. By driving the motor 6 to rotate in forward and reverse directions, the carriage 2 can be moved back and forth.

7 is a first feeding means 8, which will be described later. This is a platen for conveying the sheet material 3 fed by the second feeding means 9. 10
is the first feeding means 8. This is a paper pan for guiding the sheet material 3 fed by the second feeding means 9. Further, a plurality of feed rollers 11 are in contact with the platen 7, and the sheet material 3 is conveyed to the recording head 1 by the cooperative action of both rollers.

[Recording means]

As the recording head 1, an ink side recording method is suitably used.

The inkjet recording method includes a liquid ejection port for ejecting recording ink liquid as flying droplets, a liquid flow path communicating with the ejection port, and a part of this liquid flow path. and ejection energy generating means for applying ejection energy to the ink liquid to form flying droplets. The ejection energy generating means is then driven in accordance with the image signal to eject ink droplets to create an image.

Examples of the ejection energy generating means include a method using a pressure energy generating means such as an electromechanical transducer such as a piezo element, and an electromagnetic energy generating means that generates flying droplets by irradiating and absorbing electromagnetic waves such as a laser into the ink liquid. There are two methods: a method using a thermal energy generating means such as an electrothermal converter, and a method using a thermal energy generating means such as an electrothermal converter. Among these, a method using a thermal energy generating means such as an electrothermal converter has discharge ports arranged in a high density, and 2a and 12b are discharge rollers for outputting the sheet material 3 after recording to the output thrust stacker 13. It is driven by the platen 7 or another drive source via a gear train (not shown).

Reference numeral 14 denotes a manual feeding guide that serves as a guide when feeding the sheet material 3 manually.

A first drive motor 15 is a first drive means for driving the platen 7. By rotationally driving this first drive motor 15, the sheet material 3 fed by the first feeding means 8 or the second feeding means 9 is conveyed to the recording head l along the vapor pan 10. It is. When recording is started, the sheet material 3 is intermittently conveyed by the reciprocating movement of the carriage 2 every time a negative line is recorded.

16 is the first feeding means 8. A second drive motor is a second drive means for selectively driving the second feeding means 9.

Hereinafter, the configuration of the main parts of the recording apparatus will be explained in detail with reference to the drawings.

This is suitable because it can be arranged in rows and the recording head can be made more compact.

In this embodiment, a bubble jet recording method, which is one of the inkjet recording methods, is used as the recording means.

FIG. 7 is an explanatory diagram of the configuration of the recording head l, and FIG.
) to (g) are explanatory diagrams of the bubble jet recording principle.

In FIG. 7, la is a heater hoard, and an electrothermal converter (discharge heater) 1b and an electrode IC made of aluminum or the like for supplying electric power to this are formed and arranged on a silicon substrate. A top plate 1e having a partition wall for partitioning a recording liquid channel (nozzle) 1d is adhered to the heater board la. Further, an ink cartridge 1 for supplying ink to the nozzle 1d is built into the recording nozzle 1.

That is, the recording head 1 has an ink cart;
A disposable type is used in which the recording head 1 is replaced when the ink in it runs out.

The ink supplied from the ink cartridge 1f is
guided into each nozzle ld. These nozzles 1d are formed with ink ejection ports 1d, and the ink ejection ports 1d are formed in these nozzles 1d.
d] is formed with a predetermined pinch in the sheet conveyance direction (Y direction in FIG. 7) facing the sheet material 3 of the recording head 1.

Here, the principle of ink flying in the bubble jet recording method will be explained with reference to FIGS. 8(a) and 8(b).

In a steady state, as shown in FIG. 8(a), the surface tension and external pressure of the ink 17 filled in the nozzle ld are balanced at the ejection port. If the ink 17 is to fly in this state, the electrothermal converter 1b in the nozzle 1d is energized to cause the ink 17 in the nozzle ld to rise rapidly in temperature beyond nucleate boiling. . Then, as shown in FIG. 8(b), the ink 17 adjacent to the electrothermal converter 1b is heated to generate microbubbles, and the ink in the heated portion is vaporized and film boiling occurs. As shown in FIG. 8(C), the bubble [8] grows at two speeds.

It is attached to the main body of the device so as to overlap the lower side of the feeding means 9.

Reference numeral 8a denotes a housing-like frame constituting the first feeding means 8, in which a feeding stun force 8b for loading the sheet material 3 is rotatably mounted around a pin 8c. It is attached.

8d is the sheet material 3 loaded on the feed stunker 8b.
This is a feeding roller, which is a feeding rotating body for feeding. The feed stacker 8b is urged upward from the back side by an elastic member 8e, and brings the uppermost sheet 143 into contact with the feed roller 8d.

Further, a separating claw 8'' for separating the sheet material 3 one sheet at a time is provided at the end of the frame 8a in the feeding direction.

As shown in FIG. 3, a feed roller guide 8g is attached to the rotary shaft 8dl of the feed roller 8d so as to be movable in the thrust direction. Further, the feed roller guide 8g is moved on the feed stacker 8b by a sheet movable in the width direction of the material 3.
) When the ink droplets reach their maximum growth as shown in FIG. 1, the ink droplets are pushed out from the ejection opening in the nozzle 1d, and the ink droplets fly onto the sheet material 3 at that speed to record an ink image.

When the energization to the electrothermal converter 1b is finished, the state shown in FIG. 8(e)
As shown in FIG. 8, the grown bubble 18 is cooled and contracted by the ink 17 in the nozzle ld, and further, as shown in FIG. 8(f), the ink contacts the surface of the electrothermal converter lb and is rapidly cooled. , the bubble 18 disappears or shrinks to an almost negligible volume. When the bubble 18 contracts, ink is supplied from the ink cartridge if into the nozzle 1d by capillary action, as shown in FIG.

Therefore, an ink image is recorded on the sheet material 3 by energizing the electrothermal transducer 1b in synchronization with the movement of the carriage 2 and in accordance with image information.

[No.-Feeding means]

As shown in FIG.
It is maintained by Therefore, the above sheet guide 8h
When the separation claw 8r and the feeding roller guide 8g are moved in the width direction, the separating claw 8r and the feeding roller guide 8g are also moved at the same time.

Further, the rotation shaft 8d of the feeding roller 8d is rotatably supported at both ends by the frame 8a, and a fourth
As shown in the figure, the driving force from the second drive motor 16 is transmitted to a gear 81 attached to one end of the second drive motor 16 to rotate it.

The installation of the feeding means 8 will be explained with reference to FIG.

Side frames 19 provided on the left and right sides of the device body.
A main body side guide 21, 22 and a lever 24, 25 rotatable about a pin 23 are provided on opposing surfaces of the main body side guide 21, 20, respectively.

Stacker guides 8 are provided on both sides of the feed stacker 8b.
When the stacker guides sb, 8b2 are inserted along the main body side guides 21.22, when their tips 8bl', 8b2' abut against the surface 21a22a, the levers 24.25 The claw portion 24a25a of the stacker guide 8b1. 8bz
8b and sb, respectively, so that the first feeding means 8 can be attached to the main body of the apparatus. At this time, the gear 81 is engaged with the planetary gear 34 and driven. It becomes possible to transmit force.

When removing the first feeding means 8 from the main body of the apparatus,
This can be done each time the feed stacker 8b is pulled out by pushing down the tips 24b, 25b of the levers 24, 25 to disengage the claws 24a, 25a from the grooves 8b, 8b2. .

Therefore, by removing the first feeding means 8 from the main body of the apparatus, it is possible to easily replenish the sheet material 3.

[Second feeding means]

In FIG. 1, 9a is a plate-shaped frame constituting the second feeding means 9, and ribs 9b and 9c are provided at predetermined positions on this frame 9a. Furthermore, the ribs 9b and 9c rotatably support the guide shirts I and 9d. Frame 9
This is a sheet sea loaded on aJ2. The feeding roller 9g is a half-moon-shaped roller with a part of the circular surface cut out.

Between the feeding roller 86.9g and the platen 7,
A first detector 26 which is a first detection means for detecting the seat part shrine 3 is equipped. This first detection! In step S26, the presence or absence of the sheet material 3 being conveyed on the support plate 28 forming the sheet conveyance path is detected by the lever 27b rotating around the pin 27a.

At one end of the rotating shaft 9g of the feeding roller 9g, a sixth
As shown in the figure, a pulley 9 for transmitting the drive nozzle
h, a one-way flanch 91 that transmits driving force only in one rotational direction, a phase cam 9k that transmits the phase of the rotating shaft 9g+ to a second detector 9j that is a second detection means, and a rotating shaft 9g1 that rotates integrally, Feed roller 9g and plate l-9a
A gap cam 9β is provided for forming a gap between the two.

Also, the rotating shaft 9I of the above-mentioned feeding roller 9g! As shown in FIG.
4' Slider 9e for positioning 3 in the width direction
is movably mounted. Slider 9e above
A locking portion trA' 9 e , which is a part of the frame 9a, frictionally slides on the frame 9a to prevent it from accidentally moving.

Further, as shown in FIG. 5, the guide shaft 9d has a plate 9f located outside the ribs 9b and 9c for holding the sheet material 3 loaded on the frame 8a to the feed roller described later. It is mounted so that it can rotate. The play 1-9f has both ends and the frame 9a.
The feeding roller is biased in the axial direction by an elastic member 9r that connects the feeding roller to be described later. The portion of the plate 9r that presses the sheet material 3 has a friction coefficient of 1-4. t
A slip member 9"2 is attached to the plate 9f to bring it closer to the slide member 9. Further, a handle 9rz for rotating the plate 9f against the elastic force of the elastic member 9r is protruded near the guide shaft 9d of the plate 9f. It is set up.

9g is the sheet loaded on the plate 9a + A'
The rotating shaft 9g is biased in the positive direction by a feeding roller n which is a feeding rotating body for feeding the rotating shaft 3. In addition, the rotating shaft 9
g1 has an operating cam 9p for operating the claw portion 149m.
, and " rotatably holds the rotating shaft 9gl,
A leopard joint tJ9q is provided to fix the rotating shaft 9g+ on the frame 9a. Further, 9r is a rib for supporting the coupling portion 4J' 9 q on the frame 9a.

FIG. 9 shows the relationship between the manual feeding guy (III) and the second feeding means 9 when viewed from the direction of arrow C in FIG. 1.

As shown in FIG. 1, a rib 14a is protruded from the back side of the manual feeding guide, and a gap is formed between the rib 14a and the frame 9a.

The size of this gap 1.1 is such that the second feeding means 9 can feed a sheet material having the maximum thickness.

From the sheet loading surface P1 of the side frame 9a, the claw part + A9
The claw portion 9mj of the container m protrudes from the loading surface P1 by a height of 1.3 mm. A notch 14a1 is formed in the rib 14a provided facing the claw portion 9mj, and a cutout portion 14a1 is formed in the rib 14a facing the claw portion 9mj.
m+ is released through the notch]4a1.

A thin plate-like elastic member ub which is smooth and has a small coefficient of friction is connected to the surface of the rib], 4a, and the tip end 1
4b protrudes further downward than the notch 14a, and faces the sheet stacking surface P1 with a gap of 1.2. Although the tip portion 14b1 is formed integrally with the thin plate-like elastic member 14b, it can also be formed from a separate member.

Next, a sectional view of the feeding roller 9g is shown in FIG. 10.

The rotation shaft 9g+ of the feed roller 9g is arranged parallel or almost parallel to the sheet loading surface P with a distance between the two, and in this embodiment, the rotation shaft 9g+ is a cam that rotates integrally with the rotation shaft 9g1. A circular shaft with a part cut out is used to attach the parts.

The shape of the rotating shaft 9g+ may be any shape as long as the cam etc. can rotate together.

Further, the feeding roller 9g has a notch 9gz on a part of the circumferential surface.
A half-moon-shaped roller is used. In a state where the cutout portion 9gz faces the sheet stacking surface P1,
The feed rollers 9g are fitted into the loading surface P1, and then the coupling member 9q is rotated in the direction of the arrow E to fit into the recess 9Q3.
The feeding roller 9g can be attached to the frame 9a by fitting into the convex portion 9rz.

[Second driving means]

Next, the second driving means of the sheet feeding device will be explained with reference to FIG. 12.

In FIG. 12, a pulley 29 is attached to the rotating shaft of the second drive motor 16, and the belt 30 engaged with the pulley 29 connects a pin 31a to the side frame 19.20 on the side of the main body of the apparatus. A pulley 31 rotatably attached to the center, a rotation shaft 9 of a feeding roller 9g
Each hook is passed to a pulley 9h attached to g+. Gear fixed to the pulley 31 (not shown)
meshes with a gear 32 that is rotatably attached to the sight frame 1920 around a pin 32a. As shown in FIG. 3, this gear 32 is connected via a planetary gear 34 centered around a pin 32a and supported by a rotating lever 33.
The rotating shaft 3d of the first feeding means 8 is in mesh with the four attached gears 81, and in other conditions, the loading surface P
It is taller than 1 and protrudes up to. Therefore, the sheet material 3 is fed by the circular arc surface 9g3, and its outer circumferential length is the rotating shaft 9g.
The distance from the platen 1 to the platen 7 is shorter than the distance from the platen 7 to the platen 7.

The above Ll, L2. L3. The relationship between the size of L4 is
(,1>1.l>1.,>12, the minimum thickness of the sheet material 3 to be used>L, and the maximum thickness of the sheet material 3 to be used is 11.).

The connecting member 9q that connects the rotating shaft 9g+ and the frame 9a will be explained with reference to FIG. 11.

The coupling member 9q has protrusions 9q+ and 9Q2 protruding from both sides in the axial direction through which the rotating shaft 9g+ is rotatably inserted. A recess 9r1 is formed in a portion of the rib 9r into which the rotating shaft 9g1 is fitted, and a protrusion 9r2 is provided in a portion of the recess 9r1.

With the coupling part U9q attached to the rotating shaft 9g1,
By moving the coupling member 9q in the direction of the arrow in FIG. 11, the projection 9 T11. 9 q2 is the recess 9r of the rib 9r.

When the second drive motor 16 rotates in the direction of arrow a,
The gear 32 rotates counterclockwise via the heald 30, and the planetary gear 34 moves in the direction of arrow F in the figure and does not mesh with the gear 81. drive)
j is not transmitted.

On the other hand, the pulley 9h driven by the belt 30 is transmitted to the rotating shaft 9g1 through the engagement of a one-way clutch 91 mounted on the same axis, and the feeding roller 9g is rotationally driven to feed the sheet material 3.

Further, when the second drive motor 16 rotates in the direction indicated by the arrow, the gear 32 rotates clockwise via the belt 30, and the planetary gear 34 moves in the direction indicated by the arrow G in the figure and meshes with the gear 81. Therefore, the rotation shaft 8d of the first feeding means 8,
A driving force is transmitted to the sheet material 3, and the feeding operation of the sheet material 3 is performed.

The pulley 911 driven by the heald 30 has no driving force transmitted to the rotating shaft 9g+ due to the disengagement of the one-way clutch 91 which is not attached coaxially with the pulley 911.

Therefore, by using the planetary gear 34, a low-cost and highly reliable power transmission system can be constructed.

The selection of the first feeding means 8 or the second feeding means 9 is performed by the CPU 35a by a selection command sent to the recording apparatus manually or by a control command in the ROM 35b, which will be described later.

[Control means]

Next, the control system of the sheet material feeding device will be explained with reference to the block diagram shown in FIG. 18.

The control means controls the control operation of the entire device.
5a, ROM 35b for storing control programs, RAM 35c used for work or data storage, recording storage 1. It has a driver 35d for driving various motors, etc., and an I10 port 35e for receiving and passing signals from various detectors, input means, etc. to the CPU 35a. The above 110 baud) 35e has a keyboard 36 R3232C (serial board) 37. Centronics (parallel boat) 38. First, in step 31 of the carriage 2, the third detector 39 detects whether the carriage 2 is waiting at a reference position (home position).

When the third detector 39 is in the OFF state, the carriage drive motor 6 is driven to make the carriage 2 wait at the home position.

Next, if the third detector 39 is in the ON state and the carriage 2 is waiting at the Baum position, the process moves to step S2 and it is determined whether the second detector 9j is in the ON state. . The second detector 9j is configured to be turned on when the feed roller 9g is in the initial state, and turned off when it is in any other state.

Second detection above! If jt9J is in the OFF state, the process moves to step S3 and the second drive motor 16 is switched to the first
The phase cam 9k mounted coaxially with the rotating shaft 9g is rotated once in the direction of the arrow a in FIG. 2 until the second detector 9j is turned on.

If the second detector 9j is in the ON state, it is confirmed that it is in the initial state and the detection operation ends.

A buzzer 40 receives a signal from a third detector 39 etc. that detects the reference position and generates a warning sound. First and second feeding means 8
．． LED 41a41b etc. are connected, indicating that 9 has been selected.

Next, the control operation by the above control system 411 is shown in Fig. 19(a).
The flowchart shown in (b) and Figures 13 to 17
This will be explained with reference to the figures.

First, in the initial state, the feed roller 9 is driven by the cam 9.
p (and claw member 9m), gap cam 91 (and plate 9
f), phase cam 9k (and frame 9 of second detector 9N)
The positional relationship of a with respect to the sheet stacking surface P is as shown in FIG.

At this time, the gap 11. The size of L2 < LS < 1
．． It is 4.

The second detector 9J interlocks the above initial state with the phase cam 9k.
Detected by. Further, the third detector 39 detects whether the carriage 2 is waiting at the home position.

The detection operation at this time will be explained with reference to the flowchart shown in FIG. 19(a).

Further, the first feeding means 8 is not provided with any particular initial state, and remains in a standby state.

When the sheet material feeding device is in the initial state, the second feeding means 9 can be supplied with the sheet material 3. That is, the handle 9r3 provided on the plate 9f is
When the sheet material 3 is rotated in the direction of arrow P in FIG. 5 against the elastic horns of r, the tip pressing portions of the plays 1 and 9f are lifted up, so that the sheet material 3 is attached to the frame 9a as shown in FIG.
Load it on top, insert it until its tip touches the rib lla, and return the handle 9f3 to its original position. Furthermore, positioning in the width direction is performed by moving the slider 9e in accordance with the width size of the sheet cage 3. At this time, since the sheet material 3 is pressed against the sheet stacking surface P1 by the play 9f, there is no chance of IJI being inadvertently caused.

In addition, since the first feeding means 8 can be removed from the main body of the apparatus, replenishing the sheet grain 3 can be done more easily than before.

Next, the sheet material feeding operation will be explained with reference to flowchart 1 shown in FIG. 19(b).

First, when a feeding command for the sheet material 3 is input in step Sll, the process moves to step S12 and the first feeding means 8 or
Alternatively, it is determined whether the feeding is from the second feeding means 9.

The selection of the feeding means is displayed on L E D 41a 41b. If the feeding is from the first feeding means 8, the process moves to step S13, where the second drive motor 16 is driven to rotate in the direction of the arrow in FIG.
Gear 32. The feeding roller 8d is driven via the planetary gear 34 gear 81 to feed the sheet material 3.

Next, the process moves to step S14, and it is determined whether the first detector 26 detects the leading end of the sheet material 3. If the leading edge of the sheet material 3 is detected, the process moves to step 315 and the second drive motor 16 is driven until the sheet material 3 reaches the platen 7. Next, in step S16, the first drive motor 15 is driven to rotationally drive the platen 7, and the sheet material 3 is conveyed to the recording head 1.

Further, in step S14, if the leading end of the sheet material 3 is not detected by the first detector 26, this will be explained with reference to FIGS. 15 to 17.

First, the case where the sheet material 3 is continuously fed will be explained with reference to FIGS. 15 and 16.

FIG. 15(a) shows the case where the second feeding means 9 is in an initial state.

Next, when the second drive motor 16 is driven to rotate the rotating shaft 9g1 in the direction of the arrow a as shown in FIG. The material 3 is lifted, and at the same time, the lowermost sheet material 3 is sent downstream, and its tip abuts against the thin plate-like elastic member +4b. However, since the claw portion 9m+ of the claw member 9m protrudes from the loading surface P1, the thin elastic portion 4t14
b cannot be bent, and the leading ends of the sheet materials 3 can be aligned to prevent skewing.

When the feed roller 9g further rotates, the operating cam 9p presses down the claw member 9m against the elastic force of the elastic member 9n, so that the claw portion 9m+ is pushed down from the loading surface P. Evacuate downward. At this time, the thin plate-like elastic part HI
4b moves from the notch 14a1 of the rib 14a to the balance wheel 317, and a counter (not shown) starts counting. Then, the process moves to step 31B, and it is determined whether the count number exceeds a reference count number corresponding to the distance from the first feeding means 8 to the platen 7.

If the count number does not exceed the reference count number, the process returns to step S13 and the second drive motor 1
6 is driven to feed the sheet material 3 by the feeding roller 8d.

If the count exceeds the reference count, the process proceeds to step S19, where it is determined that there is no sheet material 3, and the buzzer 40 is sounded to issue a warning.

Next, when the sheet material 3 is fed from the second feeding means 9 in step 312, the process moves to step 320, and the second drive motor 16 is rotated in the direction of arrow a in FIG. is driven to feed the sheet material 3.

In the following, the feeding operation by the second feeding means 9 will be described for the case of continuous feeding and the case of feeding only -.sheets.The sheet material starts to bend and is forced downstream by the feeding roller 9g. 3 pushes and bends its tip toward the downstream side while sliding on the thin elastic member +4b to form gaps 1 and 6 between it and the loading surface P1, as shown in Figure (C)-1. do.

Then, as shown in FIG. 3C-2, the lowermost sheet material 3 is fed downstream from the gap L6 as the feeding roller 9g rotates.

The second sheet material 3 from the lowermost sheet material 3 is not fed due to the elastic force of the thin plate-like elastic portion +J'llb. The force relationship at this time is, F1 is the frictional force between the feed roller 9g and the sheet feeder 3, F2 is the frictional force between the sheet materials 3, and F3 is the elastic force of the thin elastic member +4b. , F3>F2.

In this way, the sheet materials 3 are sequentially fed while being separated one by one.

Therefore, the gaps 1 and 6 are automatically adjusted by the thin plate-like elastic portion +a'llb according to the type of sheet material 3, and sheet materials 3 having various characteristics can be automatically fed.

When the feeding roller 9g further rotates, the second detector 9j detects the phase cam 9k, as shown in FIG.
Return to initial state. The separated sheet material 3 is fed toward the platen 7 by multiple rotations of the feeding roller 9g, and when the leading end is detected by the first detector 26,
The feeding roller 9g is rotated a plurality of times by an amount corresponding to a distance longer than the distance between the first detector 26 and the platen 7.

This is to ensure that the leading end of the sheet material 3 is pushed into the nip between the platen 7 and the feed roller 11 to prevent skewing.

With the sheet material 3 in contact with the platen 7, the feeding roller 9g is returned to its initial state as shown in FIG.

Further, when the sheet material 3 is fed from the second feeding means 9 by the rotation of the platen 7, the sheet material 3 is not in contact with the feeding roller 9g, so that it can be transported with a light force. In this case, in order to assist the conveyance of the sheet material 3 on the platen 7, the feed roller 9g may be rotated.

On the other hand, since a gap L7 is formed between the first feeding means 8 and the known claw separating surface P1, the sheet material 3 thinner than this can be shaped into a thin plate without folding the end. The elastic member 14b can be inserted with light force.

Also, when feeding a thicker sheet material 3 due to gaps,
It can be inserted with less force than when there is no gap.

Therefore, even when a weak sheet material 3 is loaded, the gap L6 or beam can be automatically adjusted according to the thickness of the sheet material 3 and fed.

Hereinafter, the feeding operation when the second drive motor 16 is driven is the same as the continuous feeding shown in FIGS. 15(b) to 15(d), and will therefore be omitted.

Next, returning to the flowchart of FIG. 19(b) again, when the sheet material 3 is fed by the second feeding means 9, the process moves to step 321 and the first detection i! Sheet material 3 by %26
It is determined whether the tip of the is detected.

If the leading edge of the sheet material 3 is detected, step S2
2 until the sheet material 3 reaches the platen 7.
The second drive motor 16 is driven. In this second drive motor IG, the second detector 9J uses the tenth method. Further, after the sheet material 3 reaches the platen 7, the platen 7 is driven by the first drive motor 15 to convey the sheet material 3, but the feeding roller 8d is dragged by the sheet material 3 and rotates. Conventionally, parts such as one-way clutches were required to avoid pulling the load on the drive system. On the other hand, in this embodiment, the rotating shaft 8dl rotates in the direction of the arrow F in FIG. rotate in the direction of the arrow around the bottle 32a, and the planetary gear 34 and gear 8
The mesh with 1 is released. As a result, the feeding roller 8d is in a state where no load from the drive system is applied, and the sheet material 3 can be pulled out with a light force.

Next, the feeding operation when the second feeding means 9 feeds sheet materials 3 such as cut sheets one by one will be explained with reference to FIGS. 15 and 17.

FIG. 17 shows a case where the second feeding means 9 is in an initial state. Play 1-9f and O shown in the loading diagram by the gap cam 9ρ
Stop when the N state is reached.

Next, proceeding to step 316, the first drive motor 15
The platen 7 is driven to rotate, and the sheet material 3 is conveyed to the recording end 1.

Further, in step S321, if the leading end of the sheet material 3 is not detected by the first detector 2G, step S2
3, a counter (not shown) starts counting. Then, the process moves to step 324, and it is determined whether the count number exceeds a reference count number corresponding to the distance from the second feeding means 9 to the platen 7.

If the count number does not exceed the reference count number, the process returns to step 320, the second drive motor 16 is driven, and the sheet material 3 is fed by the feed roller 9g.

If the count exceeds the reference count, the process proceeds to step S25, where it is determined that there is no sheet material 3, and the buzzer 40 is sounded to issue a warning. Also, the warning displays the selection of the feeding means I, B D41 a,
41b may be blinking.

Other Embodiments Next, other embodiments of the sheet material feeding device shown in the above embodiments will be described with reference to FIGS. 20 to 23.

Each feeding means in the embodiment includes a platen 771z-
It can be constructed even if it is separated from the main body of the recording apparatus including the recording heads 8a, 9a, the recording head l, the carriage 2, etc., and the second
As shown in FIG. 0, it may be configured to be detachably attached to an existing recording device.

As shown in FIG. 21, as a gap forming part that forms a gap between the plate 9f of the second feeding means 9 and the loading surface P, a second detector 9j detects the phase of the feeding roller 9g. Then, the solenoid 42 is turned ON and OFF by that signal.
It is also possible to configure so that a gap is formed by F.

Further, the mechanism for switching the transmission of the driving force to the first feeding means 8 or the second feeding means 9 includes a mechanism for transmitting the driving force from the planetary gear 34 to the first feeding means 8 when the second feeding means 9 is driven. A disposable type recording head was used, in which the recording nozzle 1 was replaced when the 1r ink ran out to ensure that the ink was shut off.
Ink may be supplied to the recording head from an ink cartridge separately installed in the recording apparatus.

Furthermore, the recording means of the present invention need not be limited to the bubble jet recording method described above. For example, a so-called thermal transfer recording method in which an ink sheet coated with heat-melting ink is heated in accordance with an image signal and the melted ink is transferred to the sheet material 3;
Various recording methods can be employed, such as a so-called thermal recording method in which a sheet material 3 that develops color with heat is heated in accordance with an image signal, and a so-called wire don't recording method in which recording is performed by striking an ink ribbon with a wire in accordance with an image signal. I can do it.

Therefore, the recording nozzle is not limited to the above-mentioned bubble jet head; for example, a thermal head, a wired nodal head, a daisy-wheel head, etc. can be used.

The recording apparatus may be used as an image output terminal for information processing equipment such as a computer, and a weak spring member 43 may be connected to the rotary lever 33 as shown in FIG. As the spring member 43, one having an elastic force that does not prevent the rotation of the intermediate gear 32 from pressing the planetary gear 34 against the rotating shaft 8d and the upper gear 81 is used.

Also, a thin plate-like elastic member 1 used to separate the sheet material 3
As shown in FIG. 23, the tip 11b may have a tapered tip. In this case, the elastic member 1
4b is flexible at the tip and strong at the base, so it can be used with more sheet materials.

Furthermore, the configuration of the recording means applied to the above embodiments is as follows:
In addition to the above-mentioned combination of the discharge port 1 liquid path and the electrothermal converter, US Pat.
It is also possible to employ those disclosed in the specification of No. 58333, Japanese Unexamined Patent Publication No. 59-123670, and the like.

Furthermore, the above-mentioned recording means can be applied not only to the ink cartridge if provided in the recording head I and its ink storage chamber, but also to a copying device combined with a reader, etc., and furthermore, a facsimile device having a transmission/reception function. It is possible.

<Effects of the Invention> As described above, the present invention provides means for switching the transmission of driving force to the first feeding means or the second feeding means.
By using planetary gears, a low-cost and highly reliable power transmission system can be constructed.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the recording device, FIG. 2 is a perspective view showing its external configuration, FIGS. 3 to 6 are perspective views showing its main parts, and FIG. 7 is a configuration explanatory view of the recording head. , Figure 8 (
a) to (g'l are explanatory diagrams of the bubble jet recording principle, Figs. 9 to 12 are explanatory diagrams of parts of the second feeding means, and Fig. 13 is an explanatory diagram of the bubble jet recording principle.
17 are explanatory diagrams of the feeding operation of the second feeding means, FIG. 18 is a pronk diagram showing the control means, and FIG. 19 [a]
(b) is a flowchart showing the control operation, and FIGS. 20 to 23 are explanatory diagrams of the other side. l is the recording head, Xa is the heater board, lb is the electrothermal converter, IC is the electrode, 1d is the nozzle, 1d is the ejection port, le
is the top plate, 1f is the ink cartridge, 2 is the carriage, 3I is the sheet material, 3a is the card holder, 3b is the rear shaft, 3C is the front rail, 4a, 4b are the pulleys, 5.30 is the heald, 6 is the carriage Drive motor,
7 is a platen, 8 is a first feeding means, 8a and 9a are frames, 8b is a feeding stacker, 8 bi, 8 b2 is a stacker guide, 8b+"8bz" is a groove, 8 c,
9m2.27a is a bottle, 36 9g is a feeding roller, 8d+, 9g+ are rotating shafts, 8e 9f+, 9n are elastic members, 8f is a separation claw, 8g is a feeding roller guide, 8
h is a sheet guide, 8i, 32 are gears, 9 is a second feeding means, 9b, 9c9r14a are ribs, 9d is a guide shaft, 9e is a slider, 9f is a plate, 9h is a sliding member, 9f3 is a handle, 9h is a pulley , 91 is a one-way clutch, 9j is a second detector, 9 is a phase cam, 9
P is a gap cam, 9m is a claw member, 9d+ is a claw part, 9p is an operating cam, 9q is a coupling member, 9Q+, 9q2 are protrusions,
9q3+ 9r+ is a concave portion, 9rz is a convex portion, 10 is a paper pan, 11 is a feed roller, 12a, 12b are discharge rollers, 13 is a discharge stacker, 14 is a manual feeding guide, 14a1 is a notch, 1. H+ is a mycorrhizal elastic member, 15 is a first drive motor, 16 is a second drive motor, 1
7 is ink, 18 is air bubble, 19.20 is sight frame, 21.22 & soil body side guide, 24.25 is lever 2
4a, 25a are claw parts, 26 is a first detector, 27b is a lever, 28 is a support plate, 29.31 is a pulley, 33 is a circumferential lever, 34 is an aX gear, 35a is a CPIJ, 35
b is ROM, 35c is RAM, 35d is driver, 3
5e is I10 boat, 36 is keyboard, 37 is R32
32C138 is Centronics, 39 is the third detector, 4
0 is a buzzer, 41a and 41b are LEDs, 42 is a solenoid, 43 is a spring member, 44 is a knob, and 45 is a switch.

Claims (4)

[Claims] (1) First, for loading sheet materials so that they can be fed individually;
a second feeding means; a platen for conveying the sheet material fed by the first feeding means or the second feeding means; and a recording device for forming an image on the sheet material according to image information. means, a first driving means for driving the platen, a second driving means for selectively driving the first and second feeding means, and the first and second feeding means and the platen. a first detection means for detecting a sheet material installed between the second drive means and a control means for controlling the drive of the first drive means based on a detection signal of the first detection means; A recording device characterized in that a planetary gear rotates according to the rotational direction of the means to switch transmission of driving force to the first feeding means or the second feeding means. (2) The recording device according to claim 1, wherein the recording means of the recording device is an inkjet recording method that creates an image by ejecting ink according to a signal. (3) The recording means discharges ink using thermal energy, and includes an electrothermal converter for generating the thermal energy. recording device. (4) The recording means of the recording device energizes the electrothermal transducer in accordance with the signal, and the ink is ejected from the ejection port to form an image due to the growth of bubbles generated by heating exceeding film boiling by the electrothermal transducer. 4. The recording apparatus according to claim 3, which uses a bubble jet recording method for creating.