JPH0592839A - Recording device - Google Patents

Abstract

(57) [Abstract] [Purpose] A compact and easy-to-use recording device that can perform only the forward / reverse control of one drive source, including the registration adjustment to prevent skewing, from the feeding to the discharging of the recording material. Offer. [Structure] A first conveying means 2 for separating and feeding the accumulated recording material 1, and after feeding adjustment of the fed recording material 1, this is further fed to the third conveying means 6, 7. 2nd conveyance means 4, 5, 1st, 2nd, 3rd conveyance means 2, 3,
One drive source 11 capable of driving 4, 56, and the first transport means 2 and the second, third when the drive source 11 is switched between forward and reverse directions.
A recording apparatus having means 13 to 20 for switching transmission of driving force to the conveying means 3, 4, 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus, and more specifically, it comprises a conveying means for feeding accumulated sheets of recording material one by one to a recording position and discharging the recorded sheets. Recording device

[0002]

2. Description of the Related Art As a conventional recording apparatus, recording materials (recording sheets) cut into a predetermined size are held in an accumulating state in a supply section, and sheets are separated one by one from here by a feeding roller. It is known that the recording sheet is fed to the position of the registration roller, where the leading edge of the recording sheet is retained to correct the skew and the recording sheet is fed to the recording position at a predetermined timing. ing. In most cases of such a recording apparatus, the skew of the recording sheet is corrected by a combination of an electromagnetic chuck and a plurality of motors, and the sheet is conveyed later.

[0003]

However, if the recording sheet is conveyed by a combination of a plurality of motors, electromagnetic chucks and the like as in the above-mentioned conventional example, the cost is high and such a member is used. Arranging in the device causes an increase in size. Furthermore, since the number of electric parts to be controlled increases, the control system becomes complicated, and delicate control is required accordingly, and a failure easily occurs.

An object of the present invention is to pay attention to such a conventional problem and, in order to solve the problem, control forward / reverse rotation of one drive source without skewing from feeding to discharging of a recording sheet as a recording material. It is to provide a compact and easy-to-use recording device that can be implemented only by itself.

[0005]

In order to achieve such an object, the present invention provides a first transporting means capable of separating and feeding a plurality of accumulated recording materials one by one, and the first conveying means. 1 second conveying means which is arranged on the downstream side of the conveying means in the conveying direction and is capable of resist adjustment for correcting skew of the recording material conveyed, and arranged on the downstream side of the second conveying means in the conveying direction. A third conveying means which is provided and guides the resist-adjusted recording material to a recording position; and a single drive source capable of driving the first, second and third conveying means and capable of rotating forward and backward, Drive force transmission switching means capable of selectively transmitting drive force to one of the first transport means and the second and third transport means by forward or reverse rotation of one drive source, The first drive source and the second drive source are transmitted via the drive force transmission switching means by the one drive source. And a third conveyance means is driven by switching at a predetermined timing, it is characterized in that so as to convey the recording material.

[0006]

According to the present invention, the first conveying means is driven by the rotation of either the forward or reverse rotation of the drive source through the driving force transmission switching means to feed the recording materials one by one from the feeding section. , The rotation of the drive source is switched at a predetermined timing after reaching the second conveying means, so that the third conveying means
In the case of having a transporting means and a fourth transporting means for discharging, the fourth transporting means is also driven, and the recording material whose resist is adjusted by the second transporting means by these drives is driven by the third transporting means. The recording medium is guided to the recording position and discharged after recording. When the recording medium has a fourth conveying means, the discharging is performed by the cooperation of the fourth conveying means.

[0007]

Embodiments of the present invention will now be described in detail and specifically with reference to the drawings.

FIG. 1 shows the construction of an embodiment of the present invention, and FIG. 2 is an explanatory view of the carrying system. First, the transport system according to the present invention will be described with reference to FIG. Here, 1 is a recording sheet held in the sheet feeding section in a state of being accumulated, and 2 is a feeding sheet which is in contact with an uppermost recording sheet 1 of the accumulated recording sheets 1 and separately feeds it. The feeding rollers 3 are guide plates that guide the recording sheet 1 that has been separated and fed between the registration roller 4 and the pressing roller 5 that is in pressure contact with the roller 4.

Further, 6 and 7 are platen rollers for guiding the recording sheet 1 to a recording position and its pressing roller, and 8 are arranged at positions opposite to the recording sheet 1 held at the recording position for recording on the sheet 1. Head, 9 and 10
Is a discharge roller for discharging the recorded recording sheet 1 and its pressing roller.

In the conveying system of the recording apparatus constructed as described above, when the start of recording is instructed, the feeding roller 2 is driven to move the recording sheet 1 along the guide plate 3 and the registration roller 4 and the pressing roller 5. Lead to between. Then, the feeding of the sheet is further continued with the leading edge of the sheet 1 abutting on the abutting portion between the rollers 4 and 5, and the registration roller 4 and the platen roller 6 are driven when the skew feeding is corrected. Then, the recording sheet 1 is guided to the recording position. In each of the examples according to the present invention, as will be described later, the discharge roller 9 is driven together with the platen roller 6 and the like so that the recorded recording sheet 1 is discharged without any delay for feeding the subsequent sheet. It is discharged by the roller 9.

Next, the construction of such a transport system will be described in detail with reference to FIG. Here, 11 is a conveyance system drive motor that can rotate forward and backward, 12 is a small gear coaxial with the motor 11,
Reference numeral 13 denotes a feed roller drive gear that meshes with the small gear 12 and drives the feed roller 2, and 14 denotes a feed roller 2 and a drive gear 13
Is a spring clutch that is provided between the two and allows only one rotation. Further, 15 is an intermediate gear that meshes with the small gear 12, and the registration roller 4
The transport system on the further downstream side can be driven and stopped all at once.

That is, 16 meshes with the intermediate gear 15,
A drive gear for driving the following drive system in only one direction via the spring clutch 17, 18 is a gear coaxial with the registration roller 4 connected to the drive gear 16 via the spring clutch 17, and 19 is a gear 18 And an intermediate gear for meshing with both the drive gear 20 of the platen roller 6 and transmitting the drive force to the platen roller 6, 21 is a drive pulley of the discharge roller 9, and 22 is a drive roller of the discharge roller 9 via the pulley 21. It is a timing belt for.

In the recording apparatus thus constructed,
By controlling the motor 11 in the forward and reverse directions, it is possible to drive and control all of the transport systems with good timing.
This will be described with reference to the timing chart of FIG. In order to facilitate understanding of the description of the rotation directions of the respective members shown in FIG. 1 below, the clockwise (CW) direction of the motor 11 as viewed from the right side of the drawing and the rotation of each member during rotation thereof will be described. The rotation direction is indicated by a solid arrow, and the rotation direction of each member during rotation in the counterclockwise (CCW) direction is indicated by a broken line.

First, when the sheet feeding is instructed, the motor 11 is rotated in the clockwise direction so that the feeding roller driving gear 13 is rotated in the counterclockwise direction. In this case, since the spring clutch 14 acts in the tightening direction, the feeding roller 2 is also rotated in the same direction, whereby the recording sheet 1 is guided through the guide plate 3 and directed from the feeding portion to the registration roller 4. Be transported. Thus, even after the leading edge of the recording sheet 1 comes into contact with the rollers 4 and 5, the feeding roller 2 continues to rotate as shown in FIG. 3, so that the skew of the sheet is corrected at the timing. The rotation of the motor 11 is switched in the counterclockwise CCW direction.

The above-mentioned clockwise rotation of the motor 11 is transmitted to the registration roller driving gear 16, but during this period, the spring clutch 17 acts in the loosening direction, so that it is not transmitted to the gear 18, and therefore the registration roller driving gear 16 is not transmitted. The roller 4, the platen roller 6 and the discharge roller 9 are not rotated until the rotation direction of the motor 11 is rotated counterclockwise. Thus, when the motor 11 starts to rotate in the counterclockwise direction, the feed roller 2 moves toward the spring clutch 14
The rotation is not transmitted by loosening, but
As will be described later, the sheet 1 is conveyed by the rollers 4, 6 and 9 on the downstream side, so that the sheet 1 is rotated along with the delivery of the sheet 1 until the sheet 1 is completely delivered from the feeding roller 2.

On the other hand, the counterclockwise rotation of the motor 11 (C
CW) is transmitted to the gear 16 via the gears 12 and 15,
Rotate this in a clockwise direction. At this time, since the spring clutch 17 acts in the tightening direction, the platen roller 6 and the discharge roller 9 are rotated together with the registration roller 4 via the gear 18, and after the recording is completed, the discharge of the sheet 1 is completed. At the time when the first sheet is fed, the rotation of the motor 11 is switched to the clockwise direction again,
The same operation as when the first sheet is conveyed is repeated. Needless to say, after all the recording sheets 1 have been recorded and discharged, all the transport systems are stopped by stopping the motor 11.

FIG. 4 shows another embodiment of the present invention. Here, 31 is a fixed shaft provided concentrically with the intermediate gear 19, and 3
Reference numeral 2 is a spring clutch provided between the fixed shaft 31 and the intermediate gear 19. Further, in this example, the platen roller 6 vibrates and the sheet 1
It is possible to suppress, via the gear 19, the turning force in the case of attempting to rotate in a direction opposite to the normal feeding direction due to the stiffness of the waist, etc. Further, 33 is a gear mounted coaxially with the feeding roller 2, 34 is a gear meshing with the gear 33,
Reference numeral 35 is a fixed shaft concentric with the gear 34, and 36 is a spring clutch provided between the fixed shaft 35 and the gear 34. Thus, for some reason the feed roller 2 is in the opposite direction, ie
When it is attempted to rotate in the clockwise direction in FIG. 4, by tightening the spring clutch 36, the gears 34, 33
The effect of restraining the rotation of the feeding roller 2 is obtained through the meshing relationship of (1), and both contribute to a stable conveyance operation of the recording sheet 1.

FIG. 5 shows still another embodiment of the present invention.
Here, 41 is a gear mounted coaxially with the motor 11,
42 is a gear that meshes with the gear 41, and these gears 4
1 and 42 are connected to each other by a connecting plate 43 and configured as a swing gear 44. Therefore, as indicated by the solid line by the counterclockwise rotation direction CCW of the motor 11, the gear 42 is biased toward the feeding roller driving gear 13 side and meshes with the feeding roller driving gear 13 side to drive the feeding roller 2.

Further, the clockwise rotation direction C of the motor 11 is
W causes the rocking gear 44 to rock in the same direction, so that the gear 42
Meshes with the intermediate gear 45. As a result, the registration roller 4 via the registration roller gear 18 meshing with the intermediate gear 45, the platen roller 6 via the intermediate gear 19 and the platen roller driving gear 20, and the timing belt 22 and the pulley 21. The discharge rollers 9 can be driven simultaneously via the.

FIG. 6 shows the drive timing of each conveying member according to the embodiment shown in FIG. That is, in the case of the present example, the swinging gear 44 is biased toward the feed roller drive gear 13 side by the motor 11 rotating in the CCW direction at the same time as the feed start command, thereby rotating the feed roller 2. Begin feeding the recording sheet 1 toward the registration roller 4 side. In this state, the intermediate gear 45 is not driven, and therefore the registration roller 4, the platen roller 6 and the discharge roller 9 are not driven and are in a stopped state.

Then, the leading edge of the recording sheet 1 is stopped at the position of the registration roller 4, and the motor 11 is now reversed in the CW direction at the timing when the skew feeding is corrected.
Then, due to this reverse rotation, the swing gear 44 swings, and the gear 42 meshes with the intermediate gear 45. Therefore, the intermediate gear 45
The registration roller 4, the platen roller 6 and the timing belt 22 mesh with the gears 18, 19 and 20 meshing with each other.
And the discharge roller 9 are rotationally driven. In addition,
In this case, the feeding roller drive gear 13 is kept in a free state, but is in contact with the sheet 1 until the recording sheet 1 is fed from the feeding portion, and is driven by the sheet 1. Thus, when the discharge of the sheet 1 is completed and the feeding of the next recording sheet 1 is started, the rotation direction of the motor 11 is again reversed to the original CCW direction, and the swing gear 44 swings to feed the sheet. The driving of the roller 2 is started.

According to this embodiment, a swing gear is provided in place of the spring clutch 14, and the swing gear is swung according to the rotation direction of the motor to switch the transport member to be driven. Can be simplified.

In each of the above embodiments, the recording method of the recording head 8 is not particularly described, but the line type ink jet recording method, the electrostatic method,
It is needless to say that the present invention can be widely applied to a recording apparatus such as a thermal recording method in which recording sheets are fed one by one from a feeding unit and are recorded at a predetermined timing during conveyance.

[0024]

As described above, according to the present invention, the first conveying means capable of separating and feeding the accumulated plural recording materials one by one, and the first conveying means. A second conveying unit that is arranged on the downstream side in the conveying direction and is capable of resist adjustment for correcting skew of the recording material that has been conveyed; and arranged on the downstream side in the conveying direction of the second conveying unit, Third conveying means for guiding the resist-adjusted recording material to a recording position, one driving source capable of driving the first, second, and third conveying means and capable of forward and reverse rotation, and the one driving A driving force transmission switching means capable of selectively transmitting a driving force to either the first conveying means or the second and third conveying means by normal rotation or reverse rotation of a source. The first, second and third carriers are driven by a driving source via the driving force transmission switching means. Preparative driven by switching at a predetermined timing. Thus conveys the recording material, it is possible to control the driving of all of the transport system in one motor,
This contributes to cost reduction, structure compactification, and simplification by reducing the number of parts, and enables normal and continuous transport operations without the need for a complicated control system.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a carrying system as a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an outline of a transport path of a transport system according to the present invention.

FIG. 3 is a timing chart showing the drive timing of each conveying means according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a configuration of a carrying system according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a configuration of a carrying system according to a third embodiment of the present invention.

FIG. 6 is a timing chart showing the drive timing of each conveying means according to the third embodiment of the present invention.

[Explanation of symbols]

 1 Recording Material (Recording Sheet) 2 Feeding Roller 3 Guide Plate 4 Registration Roller 5, 7, 10 Pressing Roller 6 Platen Roller 8 Recording Head 9 Ejection Roller 11 Drive Motor 12, 13, 15, 16, 18, 18, 19, 20 Gears 14,17 Spring clutch 22 Timing belt 31,35 Fixed shaft 32,36 Spring clutch 33,34 Gear 44 Swing gear 45 Gear

Claims (4)

[Claims] 1. A first conveying means capable of separating and feeding one by one from a plurality of accumulated recording materials, and a first conveying means arranged downstream of the first conveying means and conveyed. And a second conveying unit capable of resist adjustment for correcting skew of the recording material, and the recording medium having the resist adjustment arranged at a downstream side in the conveying direction of the second conveying unit to the recording position. A third transport means, one drive source capable of driving the first, second and third transport means and capable of rotating in the forward and reverse directions; and the first transport means by forward or reverse rotation of the one drive source. A driving force transmission switching means capable of selectively transmitting a driving force to one of the second and third conveyance means, and the one driving source via the driving force transmission switching means. The first, second and third conveying means are switched and driven at a predetermined timing. Recording device is characterized in that so as to convey the recording material. 2. A fourth carrying means for discharging the recorded recording material is provided downstream of the third carrying means in the carrying direction, and the driving force transmission switching means carries out the second and third carrying operations. 2. The recording apparatus according to claim 1, wherein the fourth conveying means is switched and driven together with the means. 3. The second transporting means until the recording material is delivered by a predetermined distance after the tip of the recording material comes into contact with the second transporting means, until the recording material is delivered by a predetermined distance. The recording apparatus according to claim 1, wherein the recording apparatus is stopped for adjustment. 4. The first, second, third and fourth conveying means have means for preventing the recording material from being conveyed in a direction opposite to a normal conveying direction. The recording apparatus according to any one of claims 1 to 3.