JPH02158558A - Recorder - Google Patents

Abstract

PURPOSE:To surely prevent permanent deformation of a hollow or the like by a spur in surfaces of a subpaper feed roller retracted from the spur in storage time by providing the subpaper feed roller, which conveys paper after it is printed, so as to be turnable and stored in a recorder in the storage time. CONSTITUTION:A paper guide 19 is closed when a printer is stored. Consequently, a roller arm 11 is pressed in its adapted part 11d by the paper guide 19 and turned to the bottom. While a subpaper feed roller 10, being supported to the roller arm 11, is similarly positioned in the bottom. Accordingly, no bad influence is given of the subpaper feed roller 10 for its height direction when the printer is stored. While an idle roller 13, pressed by the subpaper feed roller 10 and rolling mainly on the periphery of a paper feed roller 7, is positioned behind. A series of this movement is accompanied with rotating the idle roller 13 and the subpaper feed roller 10, but the paper guide 19 is not brought into contact with the periphery of the subpaper feed roller 10. Here the subpaper feed roller is placed in contactlessness with a spur 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording apparatus having a friction type paper feeding device.

[Conventional technology]

Conventionally, a friction-type paper feed device in a recording device such as a printer or a facsimile machine has a main paper feed roller 1 and a pinch roller (not shown) that presses against the main paper feed roller l, as shown in FIG. The printer was equipped with a sub-paper feed roller 2 which mainly conveys the printing paper and which applies tension to the paper after printing and pulls it.

Further, in order to press the paper against the sub paper feed roller 2, a spur 3 is provided at an opposing position, and is always pressed against the sub paper feed roller 2 by a pressing means (not shown). Further, an idle pulley I74 is disposed between the main paper feed roller 1 and the sub paper feed roller 2, and the idle pulley 4 is provided with a pressing spring (not shown) on the main paper feed roller 1 and the sub paper feed roller 2. are pressed together.

[Problem that the invention seeks to solve]

However, in the conventional recording apparatus described above, the sub paper feed roller 2 faces the spur 3 placed directly above the print head 5, and the case 6 is required on top of the spur 3, so the recording apparatus cannot be constructed thinly. It was. Furthermore, since the spur 3 is always in pressure contact with the sub paper feed roller 2 even when printing is not being performed, there is a drawback that the surface of the sub paper feed roller 2 deteriorates.

Furthermore, when an auto sheet feeder is used in the bottom path with the recording apparatus upright, there is a drawback that the paper gets caught at the exit of the case 6 when the paper is ejected.

The present invention has been developed in order to eliminate the above-mentioned drawbacks of the conventional paper.It can be constructed thinly, can prevent surface deterioration of the sub paper feed roller, and can also be used to eject paper even when used upright. It is an object of the present invention to provide a recording device that can perform the following operations in a simple manner.

[Means for solving problems]

In order to achieve the above object, the recording device according to the present invention has the following features:
In a recording device having a paper feed device including a main paper feed roller that transports paper and a sub paper feed roller that transports the paper after printing, the sub paper feed roller is provided to be swingable in the paper transport direction. The structure is as follows.

[For production]

According to the present invention, the sub paper feed roller that conveys the paper after printing is made rotatable and fits into the case when stored, so that the thickness of the recording apparatus when stored can be reduced. Furthermore, since the sub paper feed roller is retracted from the spur when stored, permanent deformation such as denting on the surface of the sub paper feed roller due to the spur can be prevented. Furthermore, when the recording apparatus is used in an upright position, the auxiliary paper feed roller is exposed, so that paper can be reliably ejected after printing.

〔Example〕

Hereinafter, the present invention will be described in detail using embodiments shown in the drawings.

FIG. 1 is an overall perspective view showing an embodiment of a recording device according to the present invention, FIG. 2 is a schematic configuration diagram of the recording device, FIG. 3 is a partial sectional view of the same recording device, and FIG. 4 is a recording device according to the present invention. FIG. 5 is a perspective view of the apparatus, and FIG. 5 is a partial cross-sectional view of the recording apparatus. The main paper feed roller (hereinafter abbreviated as main roller) 7 is manufactured in a cylindrical shape, and its outer circumferential portion has a predetermined coefficient of friction. Side plates 9a, 9b
is rotatably supported. In addition, the sub paper feed roller (
10 (hereinafter abbreviated as sub-roller) is rotatably supported by a roller arm 11, which will be described later.

As shown in FIG. 1, the sub roller 10 has paper feeding sections 10a provided at both ends and a paper feeding section 10a provided at the center.
Transmission part 10 with a diameter slightly (approximately 2 to 6%) smaller than a
b, the paper feeding section 10a and the transmission section 1
The outer periphery of 0b is set to have a large friction coefficient.

On the other hand, the spur 12 is made of a thin plate having teeth on its outer periphery, is supported by a cover 34 (described later) via a shaft 12a, and is pressed against the sub roller 10 with a predetermined pressure by a pressing means (not shown). ing. Note that although the spur 12 is provided corresponding to the paper feeding section 10a of the sub roller 10, some of the spurs 12 are omitted from illustration. In addition, the idle roller 13
is in pressure contact with the transmission portion 10b of the main roller 7 and the sub-roller 10, and transfers the rotational force of the main roller to the sub-roller 1 through frictional conduction.
I am telling 0.

Reference numeral 14 denotes a pair of left and right roller springs, which are attached to a platen 15, which will be described later, and which are attached to the idle roller.
The open end 14a is in pressure contact with a shaft 13a provided at both ends of the idler roller 13, and the idler roller 13 is always urged in one direction. Further, the platen 15 is located above the main roller rough, has a printing surface 15a located opposite to the nozzle surface 16a of the print head 16, and is attached to the base 9 by a stay 11 (not shown).

Further, the roller arm 11 is swingably attached to the platen 15 with a shaft 11a as a fulcrum, and a stopper portion 11b is formed to stop the upward rotation at a predetermined position. Stopper 1 provided in
5b. Further, at one end of the roller arm 11, an arm 11c for supporting the auxiliary roller IO and a contact portion lid for contacting with a paper guide 19 (forming a part of the exterior), which will be described later, are formed. .

The lock button 20 is slidably attached to the platen 15, and has a hook portion 20a for locking the hook portion 19a of the paper guide 19 (see FIG. 5).

A left side plate 9a and a right side plate 9b are erected on both sides of the base 9. Further, an opening 9C for a bottom pass is provided in the base 9. Note that reference numeral 21 indicates a first guide shaft, and reference numeral 22 indicates a second guide shaft, which are supported by the left and right side plates 9a and 9b of the base 9. the first guide shaft 21;
A carrier 23 is slidably supported on the second guide shaft 22 .

Further, the print head 16 is a so-called disposable type in which a print section and an ink tank are integrated, and is mounted on the carrier 23. Note that the flexible print i that wires the control board and the printing section of the print head 16 is not shown.

The carrier motor 24 is attached to the right side plate 9b via a mounting stay 17. Motor Boo again! J25
is fixed to the shaft 24a of the carrier motor 24. Furthermore, the timing belt 26 is connected to the motor pulley 2.
5 and a tension pulley (not shown), and one part is connected to the lower part of the carrier 23. Further, the paper feed motor 27 is attached to the base 9 by a stay (not shown). The roller gear 28 is attached to the shaft 8 of the main rollerf, and meshes with a pin-on (not shown) of the paper feed motor 27.

A paper pan 29 is attached to the left and right side plates 9a, 9b, and guides the printing paper from the rear to the front of the main roller rough. The paper pressing plate 30 is attached to the base 9 and presses against the main roller rough with a predetermined pressure. Further, the pinch roller 31 (see FIG. 2) is pressed against the main roller rough by a spring (not shown).

Further, the upper case 32 is provided with a hinge 32a132b, and a hole 32C is provided in the front surface of the upper case 32, with a portion thereof being recessed to expose the operating portion of the switch. Further, the paper guide 19 is rotatably attached to the upper case 32 around a hinge 32a, and a hook portion 19a is formed at the tip, and the lock button 20
It is adapted to engage with the hook portion 20a of.

The cover 34 is rotatably supported by the hinge 32b of the case 32, and the spur 12 is attached to the tip. At the attachment part of the spur 12, a V-shaped groove 3 is formed in the cover 34 corresponding to the thin plate spur 12, as shown in FIG.
4a is formed to prevent the spur 12 from touching the operator's fingers and to overlap the cover 34 in the thickness direction. In addition, the code|symbol 35 is a lower case.

A control switch 37 is attached to the control board 36 at a predetermined position, and the operating portion 37a is exposed through the hole 32C of the upper case 32.

Next, the operation of the above configuration will be explained.

Figure 6 shows the stored state of the printer, with paper guide 1
9 is closed, the contact portion lid of the roller arm 11 is pushed by the cough paper guide 19 and rotated downward. Further, since the auxiliary roller IO is supported by the roller arm 11, it is also located below. For this reason,
There is no adverse effect on the height direction of the auxiliary roller IO when it is stored.

On the other hand, the idle roller 13 is pushed by the sub roller 10, rolls on the outer periphery of the main roller rough, and is located at the rear.

This series of movements involves the rotation of the idle roller 13 and the rotation of the sub roller 10, but since the paper guide 19 does not touch the outer periphery of the sub roller 10, the paper guide 19 does not touch the outer periphery of the sub roller 10, so there is no resistance when closing the cough paper guide 19. It won't happen. At this time, the spur 12 and the auxiliary roller 10 are not in contact with each other.

Next, to describe the operation when printing, the lock button 2
0 slides, the force of the roller spring 14 is constantly pushing up the paper guide 19 via the roller arm 11, so the paper guide 19 is always pushed up, so the lock is released and the automatic Lifts up a specified amount (
(See Figure 7).

Therefore, the paper guide 19 can be easily touched by a finger, and has extremely good operability. The cough paper guide 19 is further rotated and stopped at a predetermined position (stop member not shown), resulting in the state shown in FIG. 2.

In this state, the sub roller 10 and the spur 1z are opposed to each other, so that the printing paper can be pulled up.

Furthermore, as shown in Fig. 8, when the printer is set up and an auto sheet feeder for supplying paper 38 is installed from the bottom path opening 9d at the bottom, ejecting the paper after printing must be done on the printer side. However, since the sub roller 10 is exposed outside the upper case 32, the printing paper 38
The rear end of the sheet does not get caught in the upper case 32, and the sheet can be reliably ejected and dropped downward (see FIG. 9).

FIG. 10 shows a second embodiment of the present invention, in which the roller arm 11
is abolished, and instead, a contact portion 10C with a low coefficient of friction is annularly provided on the outer periphery of the auxiliary roller 1O. Further, the paper guide 19 is provided with a pressing rib 19b at a position corresponding to the contact portion 10C, and when the paper guide 19 is closed, the contact portion IOC of the sub roller 10 and the pressing rib 19b come into contact with each other. It is designed so that no resistance occurs when rotating.

FIG. 11 shows a third embodiment of the present invention, in which guide shafts 10d formed at both ends of the sub roller 10 are pressed by pressing pieces 19c provided on the paper guide 19. It has a configuration in which a hole 15c is provided at a predetermined position.

〔Effect of the invention〕

As explained above, according to the recording device according to the present invention, the sub paper feed roller that conveys the paper after printing is made rotatable,
Since it fits inside the recording device when stored, the thickness of the recording device can be reduced when stored, and it can also be retracted from the spur when stored, preventing permanent deformation such as dents on the surface of the sub paper feed roller due to the spur. This has the effect of reliably preventing this. In addition, when using the printer in an upright position, the secondary paper feed roller is exposed, so paper can be ejected reliably after printing. Just
This has the effect of realizing an inexpensive auto sheet feeder.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing an embodiment of a recording device according to the present invention, FIG. 2 is a schematic configuration diagram of the recording device, FIG. 3 is a partial sectional view of the same recording device, and FIG. 4 is a recording device according to the present invention. FIG. 5 is a partial sectional view of the recording device, FIG. 6 is a storage state diagram of the recording device, FIG. 7 is an explanatory diagram of the operation of the recording device, and FIG. 8 is an automatic Diagram with sheet feeder installed,
Figure 9 is a diagram of the state of paper ejection in the same recording device;
The figure is a partial perspective view showing another embodiment of the recording device according to the present invention, FIG. 11 is a partial perspective view showing still another embodiment of the recording device according to the present invention, and FIG. 12 is a partial perspective view showing a conventional recording device FIG. 2 is a partially schematic configuration diagram showing an example. Roller spring, 15 ・−・=・・・−Platen, 19
・−・・−・−Paper guide, 20 −−−1 Lock button.

Claims (3)

[Claims] (1) In a recording device having a paper feed device including a main paper feed roller that transports paper and a sub paper feed roller that transports paper after printing, the sub paper feed roller is oscillated in the paper transport direction. A recording device characterized in that it is possible to (2) The recording apparatus according to claim 1, wherein the sub paper feed roller swings in conjunction with a part of the exterior. (3) The sub paper feed roller is frictionally driven via an idle roller in contact with the main paper feed roller, and a roller spring that presses the idle roller biases the sub paper feed roller in a certain direction. The recording device according to claim 1, characterized in that: