JP3284476B2 - Paper loading device in printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for loading paper in a printer.

[0002]

2. Description of the Related Art As an apparatus for loading paper in a printer, for example, disclosed in Japanese Patent Application Laid-Open No. 63-74825, a paper receiving plate is lowered through a link mechanism by erecting a paper discharge receiving member to supply paper. By widening the interval between the paper roller and the separation claw, the paper can be easily loaded on the paper mounting plate.

However, in this type of paper placing mechanism, the separation claw does not retreat when the paper is loaded. Therefore, when a large number of papers are inserted at one time, the upper paper may get on the separation claw. Therefore, if the paper feeding operation is performed in this state, not only does it hinder accurate paper feeding, but also
There is also an inconvenience that a mechanism for raising and lowering the sheet mounting plate requires many components.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem.
It is an object of the present invention to provide a sheet loading device in a new printer capable of correctly loading and feeding sheets. It is another object of the present invention to provide a paper loading apparatus having a simple mechanism.

[0005]

That is, in order to achieve the above object, the present invention provides a method for changing the loaded top-most sheet.
Equipped with means for feeding one sheet at a time by pressing against the paper feed roller
In the paper loading device of the printer, the loading
The operating lever to the upright position to load paper.
Is pressed by the tip of the operating lever and set at the tip.
If a rocking member is provided that presses and displaces the separated separation claw upward from the paper, and presses and displaces the hopper below the paper feed position.
In particular, the tip of the operating lever is fixed to a part of this swinging member.
A part for stopping and holding the operation lever in the upright position is provided .

[0006]

Embodiments of the present invention will be described below. The drawings all show one embodiment of the present invention.

First, the schematic configuration of the sheet placing apparatus will be described with reference to FIGS. 1 and 2. The sheet placing apparatus 10 is stacked and placed by the urging force of a stacker main body 20 and a compression spring 33. A hopper 30 that pushes up the paper P against the paper feed roller 70 and a swinging member 40 that is operated by the operation lever 60 to lower the hopper 30 and that rotates about the support shaft 23 b and is integral with the separation claw 41. (50),
An operation lever 60 also serving as a paper discharge tray rotatably supported about the shaft 27 so as to lower the hopper 30 via the swinging member 40 (50), and a paper feed roller 70 for feeding out paper one by one. It is constituted by.

As shown in FIGS. 3 and 4, the stacker main body 20 has a size capable of accommodating the maximum size of paper that can be fed. The leading edge aligners 22, 22 are arranged upright to align the leading edges, and on both sides, side edge retainers 23, 25, which are symmetrical, are integrally provided upright, and the other is attached according to the size of the paper. It is integrally attached with a screw 24 so that the position can be changed.

As shown in FIGS. 3 and 5, the side edge retainers 23 and 25 have a paper loop retainer 23 inside thereof.
a, 25a are formed to protrude, and the swing member 4
Support shafts 23b and 25b that rotatably support 0 and 50 are mounted slightly behind and laterally with respect to the loop pressers 23a and 25a.

On the other hand, the hopper 30 on which the sheets are stacked
4 is formed integrally by punching a plate material. As shown in FIG. 4, an insertion portion 31 is formed to project from the rear end, and the insertion portion 31 is provided at the rear end of the bottom plate 21. It is mounted so that it can swing up and down with the support hole 26 as a fulcrum by being inserted into the hole 26, and is protruded in a cantilever shape by a U-shaped cutout punched in the bottom plate 21 together with the support hole 26. The tongue 26a is attached so as not to come off.

A biasing force is constantly applied to the hopper 30 in the direction of the paper feed roller 70 by a compression spring 33 interposed between the hopper 30 and the hopper 30. Receiving portions 32, 32 pushed down by pushing-down portions 42 provided at the rear ends of 40, 50 are formed to project outward.

On the other hand, the swing members 40 and 50 for lowering the hopper 30 by the operation lever 60 and temporarily fixing the operation lever 60 at the operation position are as shown in FIGS. 2, 4 and 6. A bearing 43 provided substantially at the center in the longitudinal direction;
53, a support shaft 23b protruding from the side edge retainers 23, 25,
It is mounted to be swingable up and down by being locked to 25b.

At the front ends of the swing members 40, 50, separation claws 41, 51 for pressing the corners of the sheet so as to align the leading end alignments 22, 22 provided on the bottom plate 21, are attached.
At the rear end, receiving portions 3 provided on both sides of the hopper 30 are provided.
A push-down portion 42 which abuts on the portions 2 and 32 and pushes down this portion;
A receiving portion 45, 55 which is pushed down by an operating portion 61 at the tip of an operation lever 60 is provided on one side of the swinging members 40, 50 behind the bearing portions 43, 53.
And pivoting position holding portions 45a and 55a that abut against the operating portion 61 and temporarily fix the operation lever 60 at the operation position are formed in a rib-like shape.

On the other hand, the operating lever 60 for operating these swinging members 40 and 50 is constituted as a member which also serves as a paper discharge receiver.
The shafts 2 and 62 are fitted to the shafts 27 and 27 protruding at the portions corresponding to the receiving portions 45 and 55 of the swinging members 40 and 50 on the inner sides of the both side plates of the stacker main body 20, so that these shafts 2
It is configured such that it can be rotated around the fulcrums 7, 27.

The operation lever 60 includes the bearing 6
Actuating parts 61, 61 for pushing the respective receiving parts 45, 55 of the rocking members 40, 50 at the operation position and rotating the rocking members 40, 50 clockwise in FIG. It is formed to project, and further, on each opposing surface of the operating portions 61, 61,
In a state in which the paper is rotated to the operation position, regulating portions 63 and 63 are formed so as to protrude from the hopper 30 so as to form a gap that does not exceed the height of the tip alignment 22. Is configured not to be loaded.

In FIG. 1, reference numeral 80 denotes an automatic paper feed path, 81 denotes a paper feed roller, 82 denotes a gate roller, 83 denotes a pinch roller, 84 denotes a printing unit, 85 denotes a carriage, 86
Denotes an ink jet head, 87 denotes an intermediate frame, 88 denotes a transport unit, and 89 denotes a discharge unit. In FIG. 2, reference numeral 46 denotes a tension spring acting on the swing members 40 and 50.

In the embodiment constructed as described above, when paper p is to be loaded in the stacker body 10, first, as shown in FIG. 8, the operating lever 60 is set upright in the operating position with the shaft 27 as a fulcrum. Let it.

As a result, the operating portions 61, 61 at the tip of the operating lever 60 are connected to the bearing portions 43, 53 of the swing members 40, 50.
The receiving parts 45 and 55 provided at the rear are pushed down,
0, 50 against the extension spring 46, the support shafts 23b, 23
b.
a, 55a to hold the operation lever 60 in the upright posture.

By this pivoting operation, the operating lever 60 moves the separating claw 41 provided at the tip of the swinging members 40 and 50 to a position above the tip alignment 22 and separates the swinging member 4.
The receiving portions 32, 32 on both sides of the hopper plate 30 are pressed by pressing portions 42, 52 provided at the rear ends of the hopper plates 0, 50, and the hopper plate 30 is pressed down against the compression springs 30.

As a result, the regulating portion 63 at the tip of the operating lever 60 forms a gap between itself and the hopper 30 so as not to reach the height of the tip alignment 22. When the number of sheets is inserted, FIG.
As shown in FIG.
And only the predetermined number of sheets p4 are aligned at the front end.
Sent to 2

Therefore, when the operating lever 60 is lowered to the original position after the loading operation, the swinging members 40 and 50 released from the pressing of the operating portion 61 are supported by the supporting shafts 23b and 25b by the urging force of the tension spring 46. While rotating counterclockwise in the figure to position the separating claw 41 attached to the leading end on the leading end corner of the loaded paper p, the pressing of the operating portion 61 via the swinging members 40 and 50 is performed. The disengaged hopper 30 is pushed up by the urging force of the compression spring 33, and presses the uppermost sheet p loaded thereon against the sheet feeding roller 70 to make it possible to feed the sheet.

When the printer is operated in this state, as is well known, the paper p is fed out by the feed roller 70 while being separated one by one by the separation claw 41, and then turned in the direction opposite to the paper feeding direction. The skew is abutted between the moving paper feed roller 81 and the gate roller 82 that rolls in contact with the paper feed roller 81, the skew is sent to the printing unit 84, the required recording and writing processing is performed, and Is discharged to

[0023]

According to the present invention as described above, according to the present invention, Ri by the swing member is in the operating lever thus turning operation, the paper feeding position Rutotomoni hopper is separated a separating pawl from the sheet at the time of loading of the paper of since so as to Displacement downward, the retreating operation of obstructive hopper or separation pawl for loading the paper, the control lever
In this case, the paper can be loaded easily and reliably by a simple mechanism.

In addition, an operating lever is provided on a part of the swinging member.
By providing a part to hold the paper in the upright position, the paper
Not only can the filling work be easily performed with one hand
The number of sheets that can be loaded is regulated by the regulation section provided at the tip of the operating lever. <br/> Because the number of sheets that can be loaded is unnecessarily loaded, various inconveniences associated with loading can be prevented. Can be done .

[Brief description of the drawings]

FIG. 1 is a side view showing a cross section of an embodiment of the present invention in a paper feeding state.

FIG. 2 is a side view showing a main part in the same state.

FIG. 3 is a plan view of a stacker main body in the same device.

FIG. 4 is a plan view showing a state where a vibration member is incorporated.

FIGS. 5A to 5C are a top view, a side view, and a cross-sectional view taken along line C-C showing a side edge retainer.

FIGS. 6A to 6C are a top view, a side view, and a bottom view showing a swinging member.

FIGS. 7A to 7C are a front view, a top view, and a side view of the operation lever.

FIG. 8 is a side view showing a main part in a loaded state of a sheet.

FIG. 9 is a side view showing the device in the same state.

[Explanation of symbols]

 Reference Signs List 20 stacker main body 21 bottom plate 23b, 25b support shaft 30 hopper 40, 50 swing member 41, 51 separation claw 42, 52 depressing unit 43, 53 bearing unit 45a, 55a holding unit 60 operating lever 61 operating unit 63 regulating unit 63

Continuation of the front page (72) Inventor Koichi Endo 3-5-5 Yamato, Suwa-shi, Nagano Seiko Epson Corporation (56) References JP-A-63-282028 (JP, A) JP-A-1- 267252 (JP, A) Japanese Utility Model sho 59-105229 (JP, U) Japanese Utility Model HI 1-1111634 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65H 1/26 310 B41J 13/00 B65H 1/24

Claims (3)

(57) [Claims] 1. A sheet loading device for a printer comprising means for feeding the loaded top sheet one by one by pressing against a sheet feed roller, wherein an operation lever is set on the loading device to load the sheet. When displaced to the position, the swinging member that is pressed by the tip of the operation lever and displaces the separation claw provided at the tip upward away from the paper and depresses the hopper below the paper feed position is displaced. A sheet loading device for a printer, wherein a part of the swinging member is provided to hold the tip of the operation lever to hold the operation lever in an upright position. And a restricting portion provided at a leading end of the operating lever so that a loadable amount of paper can be inserted. When the operating lever is turned to a standing position, the restricting portion is moved to the position. 2. The paper loading device according to claim 1, wherein the paper loading device is located on a hopper. 3. An upper surface of the operation lever is formed as a tray for receiving a sheet, and when the operation lever is rotated to a horizontal position to enable sheet feeding, the operation lever is moved to a sheet discharge section. 2. The sheet loading device in the printer according to claim 1, wherein the sheet loading device is located immediately below the lower side.