JPH0558302U - Positioning structure of side guide member in printer - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a side guide member positioning structure in a printer capable of easily and accurately positioning a side guide member that moves along the width direction of a print sheet. [Structure] A paper feed base plate 11 for feeding printing paper,
A pair of side guide members 12 for guiding and supporting both sides of the printing paper, a guide groove 11a formed on the front surface side F of the paper feed base plate 11, and a rear surface side R of each side guide member 12. A guide groove 11 of the paper feed base plate 11 is provided in which the both side guide members 12 are movable along the width direction X of the print sheet by engaging the provided engagement protrusions 12c.
The positioning recess 11b is formed on a, and the engaging projection 12c of the side guide member 12 is provided with a projection 12e that can be inserted into and removed from the positioning recess 11b of the sheet feeding base plate 11.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a positioning structure for a side guide member in a printer.

[0002]

[Prior Art]

 There is a conventional printer having a structure as shown in FIG. 2, and a paper feed base plate 31 and a pair of side guide members 32, 32 are provided on an upper portion of the printer 30.

The side guide plate 32 is attached to the paper feed base plate 31 as follows. That is, as shown in FIG. 3, the paper feed base plate 31 is formed with a guide groove 31a along the width direction X of the printing paper, while the side guide member 32 is provided with an engaging projection 32a. Is provided. The side guide member 32 is slidably engaged with the guide groove 31a of the paper feed base plate 31 so that the side projection member 32 can move in the width direction X of the print sheet. Is becoming

Here, an example of the procedure for setting the printing paper on the paper feed base plate 31 will be described. First, one of the side guide members 32, for example, the left side guide member is placed on the paper feed base plate 31 side. The positioning is performed according to the position of the reference mark (not shown) provided. Then, the printing paper is placed on the paper feed base plate 31 so that the left side of the side guide member 32 is aligned with the left side of the printing paper to be used. Then, finally, the right side guide member 32 is moved so that the guide piece 32b is along the right side of the printing paper.

In this way, the printing paper set on the paper feed base plate 31 is guided and supported by the guide pieces 32b of the side guide member 32 on both sides thereof by the rotation of the platen (not shown). It is sent to the print processing unit.

[0006]

[Problems to be solved by the device]

 However, in the above-mentioned conventional structure, the position of each side guide member 32 must be visually and accurately adjusted according to the size of the printing paper to be used, which makes the paper setting operation very troublesome. Was there.

Further, since the positioning is performed visually, the set interval of each guide piece 32b with respect to the width dimension of the printing paper is not always an appropriate dimension, resulting in the following problems. That is, if the set interval is too large, both sides of the printing paper will not be supported by the guide pieces 32b of the side guide member 32, so that skew feeding of the paper is likely to occur. Is bent by the guide pieces 32b, and the paper is wrinkled.

The present invention has been made to solve the above problems, and a side guide member in a printer capable of easily and accurately positioning a side guide member that moves along the width direction of a print sheet. It is intended to provide a positioning structure for.

[0009]

[Means for Solving the Problems]

 The present invention has been made to achieve the above-mentioned object, and guides and supports the paper feed base plate for feeding the print paper to the print processing unit, and both side edges of the print paper placed on the paper feed base plate. A pair of side guide members for engaging the guide protrusions provided on the back surface side of each side guide member with the guide groove formed on the front surface side of the paper feed base plate. The side guide member is movable along the width direction of the printing paper, and the positioning recess is formed on the guide groove of the paper feed base plate, and the engaging protrusion of the side guide member feeds paper. This is a side guide member positioning structure in which a projection that can be inserted into and removed from the positioning recess of the base plate is provided, and the side guide member can be positioned by fitting the positioning recess and the projection.

[0010]

[Action]

 When the side guide member is moved along the width direction of the printing paper with the engaging protrusion of the side guide member engaged with the guide groove of the paper feed base plate, the side guide member is formed on the paper feed base plate side. The protrusion provided on the side guide member side fits into the positioning recess. Therefore, by setting the formation position of the positioning recess corresponding to various paper sizes, the side guide member can be accurately positioned by fitting the projection and the positioning recess.

[0011]

【Example】

 An embodiment of the positioning structure for the side guide member of the present invention will be described below with reference to FIG. First, the structure will be described. In the figure, reference numeral 11 is a paper feed base plate for feeding print paper to a print processing unit provided inside the printer main body. On the other hand, reference numeral 12 in the figure denotes a side guide member, which guides and supports both sides of the printing paper placed on the paper feed base plate 11, and is paired with a left side guide member (not shown). It has become.

The sheet feeding base plate 11 is, for example, a plate-shaped member having a substantially rectangular front shape, and a surface groove F is formed on the front surface side F thereof. The guide groove 11a is formed substantially parallel to the width direction X of the printing paper placed on the paper feed base plate 11. Further, for example, substantially V-shaped positioning recesses 11b, 11b, ... Are formed on the guide groove 11a of the paper feed base plate 11, and the forming positions of these positioning recesses 11b are, for example, a standard size of printing paper ( B5, A4, ...).

On the other hand, the side guide member 12 includes a support piece 12a, a guide piece 12b, and an engaging projection piece 12c. Among them, the guide piece 12b is erected at a substantially right angle from one side of the support piece 12a, and the engaging projection piece 12c is extended substantially in a hook shape on the back surface side R of the upper end of the support piece 12a. There is. Moreover, by molding the side guide member 12 with resin, the tip portion 12d of the engaging projection 12c has elasticity peculiar to the resin material, and the tip portion 12d is provided with, for example, a triangular projection 12e. ..

The side guide member 12 is attached to the paper feed base plate 11 as follows. That is, the engaging projection 12c of the side guide member 12 is slidably engaged with the guide groove 11a of the paper feed base plate 11, whereby the side guide member 12 is moved in the width direction X of the printing paper. You can move along. Further, in such a state, the projection 12e of the engaging projection 12c is in pressure contact with the guide groove 11a of the sheet feeding base plate 11 by the elasticity of the tip portion 12d (right side in the figure).

In the positioning structure of the present embodiment having the above-mentioned configuration, for example, when the printing paper used is A4 size, the side guide member 12 is moved in the direction of arrow A along the width direction X of the paper. Then, when the guide piece 12b of the side guide member 12 reaches the A4 size mark position, the projection 12e of the engaging projection piece 12c becomes the positioning recess 11b-1 for A4 size formed on the guide groove 11a. The side guide member 12 is positioned by the fitting.

When a predetermined pressing force is applied to the side guide member 12 thus positioned in the width direction X of the paper, that is, a pressing force against the elastic force of the tip portion 12d of the engaging projection 12c is applied, The tip portion 12d is deformed into a bay shape, and the projection 12e is positioned and disengaged from the recessed portion 11b-1. As a result, the positioned state of the side guide member 12 is released.

As described above, in the positioning structure of the present embodiment, the projection 12e on the side guide member 12 side is configured to be freely inserted into and removed from the positioning recess 11b on the sheet feeding base plate 11 side. Therefore, by appropriately setting the formation position of the positioning recess 11b on the guide groove 11a corresponding to various paper sizes, the protrusion 12e on the side guide member 12 side is positioned on the paper feeding base plate 11 side. The side guide member 12 can be accurately positioned by a simple operation such as fitting the side guide member 12 to the.

In the present embodiment, the protrusion 12e has a triangular shape and the positioning recess 11b has a V shape. However, the present invention is not limited to this, and the protrusion may be, for example, a half-moon-shaped protrusion for positioning. The recess may be formed in a half-moon shape.

Further, the present invention is not limited to a configuration in which both the left and right side guide members are necessarily positioned. That is, depending on the printer model, one of the two side guide members (generally the print start side) is fixedly set as the reference side, and the other is moved as the adjustment side according to the paper size. However, in the case of such a model, the same effect can be obtained even if only the side guide member on the adjustment side is positioned by the above configuration.

[0020]

[Effect of the device]

 As described above, according to the present invention, the side guide member can be accurately positioned by a simple operation such as fitting the protrusion of the engaging projection piece into the positioning recess on the guide groove. As a result, it is possible to always set the interval between the side guide members to an appropriate size, and prevent skew feeding of the sheet and generation of wrinkles.

[Brief description of drawings]

FIG. 1 is an explanatory view of a main part of an embodiment of the present invention.

FIG. 2 is an external view illustrating an example of a printer.

FIG. 3 is an explanatory view of a main part of a conventional example.

[Explanation of symbols]

 11 Feed Base Plate 11a Guide Groove 11b Positioning Recess 12 Side Guide Member 12c Engagement Projection Piece 12e Protrusion F Front Side R Back Side X Width Direction of Printing Paper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Shinichi Nunorukawa 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A paper feed base plate for feeding print paper to a print processing unit, and a pair of side guide members for guiding and supporting both side edges of the print paper placed on the paper feed base plate. The guide protrusions provided on the back surface side of the side guide members are engaged with the guide groove formed on the front surface side of the paper feed base plate, and the both side guide members are connected to the print sheet. In the positioning structure of the side guide member in the printer that is movable along the width direction of the sheet, a positioning recess is formed on the guide groove path of the sheet feeding base plate, and the engaging protrusion of the side guide member is A positioning structure for a side guide member in a printer, characterized in that a projection that can be inserted into and removed from a positioning recess of a paper feed base plate is provided.