JPH08310690A - Paper inserting device - Google Patents

Abstract

PURPOSE: To achieve positioning according to the width of each kind of paper without any fine adjustment only by turning a paper guide. CONSTITUTION: A paper guide 3 is provided on a paper insertion port 2a formed in printing equipment 1. A columnar part 3a of the paper guide 3 is turnable. A plurality of projected parts 3d are provided over the periphery of the columnar part 3a in the paper guide 3. The projected parts 3d correspond to the predetermined width of various kinds of paper. A knob part 5 of the paper guide 5 can be operated from the exterior part through a square hole 2d formed in a body cover 2, and manually turned in the direction of the arrows A or B to turn the paper guide 3 in each direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet insertion device, and more particularly to a structure of a sheet guide for positioning a sheet at a sheet insertion port.

[0002]

2. Description of the Related Art Generally, a sheet insertion device has a pair of sheet guides at a sheet insertion port of a main body, which are close to and away from each other in the width direction of the sheet to be inserted. The paper is positioned by contacting both ends of the paper.

[0003]

In the conventional paper guide, when the paper guide is moved according to the width of various kinds of paper, fine adjustment has to be made and the operability is poor.

[0004]

In order to solve the above-mentioned problems, the present invention is provided with a column portion that is pivotally supported so as to correspond to various paper widths around the column portion. A paper guide having guide portions for guiding both widthwise ends of the paper in the insertion direction is provided at the paper insertion port.

[0005]

Operation: The pillar portion of the paper guide is rotated to position the guide portion corresponding to the width of the paper to be inserted on the paper insertion port side. As a result, both widthwise ends of the paper are guided and conveyed by the guide portions of the paper guide.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the present embodiment, a printing device will be described as an example of the paper insertion device. FIG. 1 is a schematic perspective view showing a sheet insertion opening side of a printing apparatus according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a relationship between a sheet guide and a leaf spring provided in the printing apparatus according to the first embodiment. FIG. 3 is a schematic perspective view showing a paper guide provided in the printing apparatus of the embodiment. The elements common to the drawings are given the same reference numerals.

A sheet cover 2a is formed in the main body cover 2 of the printer 1 of the first embodiment , and a sheet guide 3 is provided in the sheet cover 2a. The paper guide 3 has a hexagonal pillar portion 3a, and the pillar portion 3a has rotating shafts 3b, 3b fixed to both ends thereof.
c is rotatably supported by fulcrum receiving portions 2b and 2c formed on the body cover 2. As shown in FIG. 3, the paper guide 3 is provided with a plurality of protrusions 3d around the column 3a. These protrusions 3d correspond to predetermined widths of various sheets, and six pairs are provided, one pair as a set. The protrusions 3d come into contact with both ends of the corresponding sheet 4 in the width direction, and the sheet 4 is inserted in the insertion direction (arrow D). Direction). A knob 5 is fixed to the rotary shaft 3b of the paper guide 3. A part of the outer peripheral surface of the knob portion 5 is exposed from the square hole 2d formed in the main body cover 2, and therefore can be operated from the outside through the square hole 2d, and the knob portion 5 can be manually moved to the arrow A or B direction. By rotating the paper guide 3 in each direction, the paper guide 3 can be rotated in each direction.

Further, the outer peripheral surface of the knob portion 5 is provided with the protrusions 3d.
Has a display unit 5a indicating the size of the sheet 4 guided by the user, and a rotating unit 5b for rotating the column 3a.
While rotating in the direction of arrow A or B, it is possible to confirm on the display unit 5a which paper size the protrusion 3d capable of handling is located at the paper insertion opening 2a. The display portion 5a may be provided on the rotating shaft 3c side. In this case, it is necessary to form another hole in the main body cover 2 through which the display section is exposed.

On the outer peripheral surface of the rotary shaft 3b of the paper guide 3,
A plurality of holes 3e are formed and one end 6a of the leaf spring 6 is formed.
Are in contact. One end 6a presses the rotating shaft 3b in the direction of arrow C shown in FIG. 2, and the other end of the leaf spring 6 is fixed to the main body cover 2. When the knob portion 5 is rotated in the direction of arrow A or B, the one end 6a is fitted into the hole 3e at a position where the one end 6a faces the hole 3e of the rotation shaft 3b, and the state shown in FIG. 2 is obtained. In this state, the rotating shaft 3c is fixed, and thus the position of the paper guide 3 is fixed. At this time, the display portion 5a of the knob portion 5 displays a handleable paper size through each hole 2d, and a set of protrusions 3d corresponding to this paper size is positioned at the paper insertion opening 2a. This paper insertion slot 2a has a protrusion 3d
Is positioned, the paper 4 into which another protrusion 3d is inserted
The movement in the direction of arrow D is not prevented.
That is, since the pillar portion 3a is a hexagonal pillar, another protruding portion 3d is located in the state where one set of protruding portions 3d is located at the sheet insertion port 2a.
Deviates from the movement path E of the sheet 4 shown in FIG.

The printing apparatus 1 is provided with a pair of rollers (not shown) that sandwich the leading end of the sheet 4 in the insertion direction when the sheet 4 is positioned at the sheet insertion port 2a. After being positioned, the paper 4 is placed on the printing device 1.
It is not necessary for the operator to support the sheet 4 until it is taken inside.

Next, the positioning operation of the paper guide 3 of the first embodiment will be described with reference to FIGS. For example,
When handling the B5 paper 4, first, the knob portion 5 is rotated to display "B5" written on the display portion 5a through the square hole 2d. At this time, one end 6a of the leaf spring 6 is attached to the rotary shaft 3b.
It is fitted into the hole 3e of the above and prevents the rotation of the rotation shaft 3b. As described above, the paper guide 3 is positioned. When handling papers 4 of other sizes, the paper guide 3 is positioned in the same manner as described above.

After that, the leading end of the paper 4 in the insertion direction is clamped by the rollers, and the paper 4 is taken into the printer 1 by the rotation of the rollers.

In the first embodiment, the knob portion 5 is rotated to
The paper guide 3 can be positioned only by arranging a set of protrusions 3d corresponding to the paper size to be handled at the paper insertion opening 2a. Therefore, the operability is good.

Second Embodiment In the first embodiment, the pillar portion 3a of the paper guide 3 is manually rotated, but in the second embodiment, the pillar portion 3a is driven by using the driving means.
Rotate. The second embodiment will be described below with reference to FIGS. FIG. 4 is a diagram for explaining the relationship between the paper guide and the motor provided in the printing apparatus of the second embodiment, FIG.
FIG. 7 is an enlarged explanatory view showing a sensor provided in the motor of the second embodiment.

The printing apparatus 1 is provided with a motor 10, and a gear 11 is meshed with a gear 10a of the motor 10. The rotating shaft 30b fixed to the column portion 3a is pivotally supported by the fulcrum receiving portion 2b shown in FIG. A belt 12 with teeth is stretched around the rotating shaft 30b and the gear 11.
Therefore, the driving force of the motor 10 is transmitted to the column portion 3a via the gears 10a and 11, the belt 12, and the rotating shaft 30b. Further, the motor 10 is provided with a slit disk 13 shown in FIG. 4, which rotates together with the gear 10a, and an optical sensor 14 for detecting the slits 13a and 13b formed in the slit disk 13. Slit 13b is slit 13
When the width of the slit 13b is wider than that of a and the optical sensor 14 detects the slit 13b, the control unit (not shown) detects the home position of the paper guide 3. Then, for example, according to the paper size information sent from an operation panel (not shown) of the printing apparatus 1,
The control unit controls the motor 10 so that a predetermined number of slits 13a can pass through the optical sensor 14 from the home position, and the protrusion 3d corresponding to the paper size to be handled.
To the paper insertion opening 2a.

Since the other structure is the same as that of the first embodiment, its explanation is omitted.

Next, the positioning operation of the paper guide 3 of the second embodiment will be described. The operator can select "B
When the size "5" is selected, the control unit causes the motor 10 to rotate the gear 10a by a predetermined amount, and the protrusion 3d for guiding the B5 size sheet 4 is located at the sheet insertion port 2a. As described above, the paper guide 3 is positioned. When handling papers 4 of other sizes, the paper guide 3 is positioned in the same manner as described above.

The subsequent operation is the same as that of the first embodiment, and the description thereof will be omitted.

In the second embodiment, the paper guide 3 can be positioned automatically, so that the operability is improved as compared with the first embodiment.

In this embodiment, six sets of protrusions 3d are provided corresponding to the widths of various kinds of sheets that are predetermined, but one set of the six sets of protrusions 3d is provided along the column 3a. It may be attached so as to be movable in the axial direction so that it can be freely set. This further increases the number of sheets that can be handled by the sheet guide 3.

In this embodiment, the hexagonal column portion 3a has been described as an example, but it may be a triangular column, a quadrangular column, or an octagonal column depending on the type of the paper 4 to be handled. Further, the protrusion 3d is provided at a position where it does not interfere with the insertion of the sheet 4.
For example, a columnar shape may be used as long as the number of sets of the protrusions 3d can be reduced as compared with the present embodiment.

In this embodiment, the protrusion 3d is brought into contact with both widthwise end portions of the sheet 4 to guide the sheet 4 in the insertion direction. However, instead of the protrusion 3d, the width of the sheet 4 is changed. In addition, the column portion may be cut out, and the sheet 4 may be placed in this notch and inserted from the sheet insertion port 2a. The paper guide in this case can be integrally formed.

In this embodiment, the paper guide 3 is attached to the printing device 1.
However, the sheet guide 3 may be provided outside the printing apparatus 1 as long as the sheet guide 3 can position the sheet 4 in the sheet insertion port 2a.

In the present embodiment, when the sheet 4 is positioned at the sheet insertion port 2a, a roller for holding the leading end of the sheet 4 in the insertion direction is provided, and before the sheet 4 is taken into the printing apparatus 1,
Although it is arranged so as not to come off from the paper insertion opening 2a, the printing apparatus 1 may be provided with a plate-shaped stage projecting in the direction opposite to the arrow D direction to hold the paper 4 along the insertion direction. As a result, the present embodiment can be applied to other sheet insertion mechanism units in which the printing apparatus 1 does not have rollers.

In the present embodiment, the printing apparatus has been described as an example, but the present invention can be applied to other apparatuses in which sheets are inserted.

[0026]

As described in detail above, the present invention provides
Of the guides that correspond to various paper widths around the post, the guide that corresponds to the size of the paper to be handled can be positioned by rotating the post so that the paper guide There is no need to make fine adjustments to suit. As a result, operability is improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a sheet insertion opening side of a printing apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a relationship between a sheet guide and a leaf spring according to the first embodiment.

FIG. 3 is a schematic perspective view showing a paper guide of the embodiment.

FIG. 4 is a diagram illustrating a relationship between a paper guide and a motor according to a second embodiment.

FIG. 5 is an enlarged explanatory view showing a sensor provided in the motor of the second embodiment.

[Explanation of symbols]

 1 Printing Device 3 Paper Guide 3a Columns 3b, 3c, 30b Rotating Shaft 3d Projection 3e Hole 4 Paper 6 Leaf Spring 10 Motor 13 Slit Disk 14 Optical Sensor

Claims (3)

[Claims] 1. A sheet insertion device for positioning a sheet placed in a sheet insertion port, comprising a column portion pivotally supported, and various sheet widths provided around the column portion. ,
A sheet insertion device, characterized in that a sheet guide having guide portions for guiding both widthwise end portions of the sheet is provided at the sheet insertion port. 2. The post portion of the paper guide is pivotally supported by a turning shaft, and a plurality of holes are formed in a turning direction of an outer peripheral surface of the turning shaft, and the post is fitted into these holes to make a post. The sheet insertion device according to claim 1, further comprising an elastic locking member that prevents the rotation of the section. 3. The sheet inserting apparatus according to claim 1, further comprising drive means for rotationally driving the column portion of the sheet guide.