JP2002145484A - Truing-up mechanism for medium conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a truing-up mechanism for a medium conveying device to prevent the occurrence of unevenness in conveyance during conveyance of a medium and perform wide truing-up and prevent the increase of a cost and a device space. SOLUTION: When one end of the forward end part of a medium T to be conveyed makes contact with a medium width adjusting means (a truing-up roller 16), the other end of the forward end of the medium, the other end of the forward end of the medium is energized to a positioning reference means (an abutment guide 14) and abutted thereagainst. By a first energizing force generated by the medium truing-up means higher than a second energizing force generated by a compression spring 15, moving feed rollers 11 and 12 are moved in the direction of a positioning reference means direction and the medium is conveyed along the positioning reference means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a width adjusting mechanism for a medium conveying device, and more particularly to a width adjusting mechanism for a medium conveying device suitable for use in printing on a medium such as a bank passbook by a printing device.

[0002]

2. Description of the Related Art For example, when a user (customer) conducts a transaction at a bank counter, a transaction amount, a transaction date, a transaction branch name, A transaction ATM machine or the like is printed using a printing device.
This printer uses a transport device that transports the passbook, transports the passbook inserted from the passbook insertion / ejection slot to the printing position of the printing device, and after printing is completed, transports the passbook again to the insertion / ejection slot, and a series of transactions accompanying the transaction. Printing to the passbook is completed. This transport device
In order to perform accurate printing at a predetermined position of the passbook, a width shifting mechanism for shifting the passbook is provided.

Heretofore, a width adjusting mechanism of a transport device of this kind for a bank passbook or the like has the following structure. A guide corresponding to the width of the passbook is provided on the opposite side of the butting guide, and the width direction is tightly bound. The transport passbook is width-aligned to the butting guide by the width adjustment roller or the leaf spring. The feed roller or the driven roller is unclamped by an actuator or the like, and the passbook is shifted toward the passbook guide by various actuators in a state where the transfer passbook is free.

[0004]

However, each of the above-described conventional width shifting mechanisms of the conveying apparatus has the following problems. By providing a guide according to the width of the passbook, there is a problem in that when the amount of variation in the passbook width is large, the skew and the transport variation increase. The skew and conveyance variations cause various obstacles such as printing position shift, skew printing, magnetic stripe read / write failure, and conveyance jam due to skew conveyance. In addition, since the width of the passbook varies depending on the user (bank, etc.), there is a problem that a guide must be recreated for each of various users.

Since the feed roller does not move in the thrust direction, it was impossible to shift a large amount of width. In addition, since the paper does not move in the thrust direction, the gap between the feed roller and the transport passbook is forcibly pushed, and there is a problem that a slip mark is formed and the medium is damaged. Although it is possible to surely adjust the width, there are problems such as an increase in processing time, an increase in cost, and an increase in apparatus space due to the use of the actuator.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a width adjusting mechanism of a medium transporting apparatus which has no variation in transporting the medium, enables a large width shifting, and prevents an increase in cost and an increase in an apparatus space.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is arranged along the conveying direction of a medium conveyed from an upstream side, and serves as a positioning reference when the medium is hit. A positioning reference unit, a medium width shifting unit having a first biasing force for shifting the medium relative to the positioning reference unit, and the positioning unit is disposed orthogonal to the positioning reference unit, and is movable back and forth in the positioning reference unit direction. Normally, the first urging force> the second urging force in the direction opposite to the positioning reference means.
A movable feed roller that is urged by a second urging force that is an urging force and rotationally drives the medium downstream; and a movable feed roller that is arranged downstream of the movable feed roller and orthogonally arranged to the positioning reference means, A fixed feed roller fixed in the direction of the reference means and for rotating the medium to the downstream side, and the other end of the medium leading end when one end of the leading end of the conveyed medium contacts the medium width approaching means. While pushing against the positioning reference means,
The first urging force> the second urging force moves the movable feed roller in the direction of the positioning reference means, and conveys the medium along the positioning reference means.

In this way, as shown in FIGS. 2 to 5, for example, the medium (passbook T) conveyed from the upstream side is positioned by the first biasing force of the medium width adjusting means (width adjusting roller 16). It is pushed by the reference means (butting guide 14) side (FIG. 3), and at the same time, since the first urging force> the second urging force, the second movable feed roller 1 forming a part of the movable feed roller 1
2 moves in the direction of the arrow Y to sequentially press the rear side of the medium against the positioning reference means. When the conveyance of the medium is further continued, the first movable feed roller 11, which is a part of the movable feed roller, also moves in the direction of the arrow Y by the first urging force> the second urging force, and the entire one side (upper side) of the medium. Is pressed against the positioning reference means, and the medium is completely shifted (positioned) (FIG. 4). The bite of the medium is the second movable feed roller 1
After moving away from 2, the first, second, and first movable feed rollers 11, 12 move in the direction of arrow Z, and wait for the next medium to arrive (FIG. 5).

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a width adjusting mechanism of a medium conveying apparatus according to the present invention. FIG.
1A is a side view of this embodiment, FIG. 1B is a top view, FIG.
(C) shows an opposite side view. The width adjustment mechanism HY of the medium conveyance device of the present embodiment has a configuration of a conveyance mechanism other than the width adjustment mechanism described with reference to FIGS. 1A to 1C, and is different from the upper paper guide 1 illustrated in FIG. Between the lower paper guides 2
This is a structure for transporting the passbook T shared by the fixed feed roller 13 and the driven roller 13a. Although not described with reference to the drawings, the apparatus is also provided with a printing mechanism for the passbook T, a magnetic stripe read / write mechanism, and the like.

Next, the configuration of this embodiment will be described with reference to FIGS. The width shifting mechanism HY of the medium transport device is:
The passbook T, which is the “medium” conveyed from the upstream conveyance unit, is passed through the first movable feed roller 11 and the first driven roller 1.
1, the movable feed roller 12 and the second driven roller 12a,
This is a mechanism in which the fixed feed roller 13 and the driven roller 13a carry the sheet together while being conveyed, and the width is shifted to the abutting guide 14, which is a "positioning reference means" serving as a reference for positioning the passbook T. First and second movable feed rollers 1
1, 12 and the fixed feed roller 13
b, 12b, 13b, and the first and second frames 2
The bush 23 is mounted on the bushings 23 and 22. The material of the bush 23 is a sliding material made of resin, and is snapped into the first and second frames 21 and 22.

Further, the first and second movable feed rollers 1
1 and 12 are always pressed against the second frame 22 by the compression spring 15 which is the “second urging force generating means”, but move in the thrust direction by the gap A between the retaining ring 24 and the bush 23. Is possible. The fixed feed roller 13 is fixed to the shaft 13b and does not move in the thrust direction because the clearance between the retaining ring 24 and the bush 23 is small. Further, the first and second movable feed rollers 1
1, 12 and the fixed feed roller 13 are rotated by a drive motor 31 via a motor gear 32, an idler gear 33, and a gear 34 to convey the passbook T. Also,
Second movable feed roller 12 and fixed feed roller 13
In the meantime, the width adjustment means is a “medium width adjustment means” urged in the direction of arrow A by a force (first urging force, first urging force> second urging force) considerably larger than the pressing force of the compression spring 15. There is a roller 16 for hitting the conveyed passbook T to guide 1
Close to 4.

Next, the operation of this embodiment will be described with reference to FIGS. 2 to 5 are explanatory diagrams of the operation of the width shifting mechanism of the medium transport device. Until the leading end of the passbook T conveyed from the left side in FIG. 2 contacts the width adjusting roller 16, both the first and second movable feed rollers 11 and 12 are urged downward in FIG. 2 by the compression spring 15. Passbook T
Is transported. In the next stage, as shown in FIG. 3, when the leading end of the passbook T is conveyed before the width adjusting roller 16,
The urging force of the width adjusting roller 16 in the direction of the abutting guide 14 is larger than the urging force of the compression spring 15, and the width adjusting roller 16 is rotated and the resistance to the passbook T is small. The width is smoothly shifted to the butting guide 14 without any gap. At this time, the compression spring 15 of the second movable feed roller 12 moves in the arrow Y direction together with the gear 34 by the width B of the passbook T.

FIG. 4 shows a state in which the passbook T is further conveyed as compared with FIG. 3, but both the first and second movable feed shafts 11b and 12b are compressed in the direction of arrow Y by the width C of the passbook T. The spring 15 shrinks and moves, and the passbook T is completely shifted to the butting guide 14. Until this time, both the first and second movable feed rollers 11 and 12 are usually made of rubber or resin (for example, polyurethane (having a hardness of about 60 degrees)). Although it moves in the direction of the guide 14, the first and second driven rollers 11a and 12a are made of a hard resin (for example, Duracon), so they slip with the passbook T, and only the passbook T moves in the direction of the butting guide 14. Moving.

In FIG. 5, when the passbook T is carried by the fixed feed roller 13 and further conveyed, the first and second passbooks T
The passbook T is separated from the movable feed rollers 11 and 12, and the first and second movable feed rollers 11 and 12 move in the arrow Z direction by the force of the compression spring 15. This state is a standby state for waiting for the next passbook to be conveyed.

In the present embodiment, the passbook T is shifted toward the abutting guide 14 by using a roller in the configuration of the width adjusting roller 16, but a similar effect can be obtained by replacing the passbook T with a leaf spring or the like. It becomes a cheaper mechanism. In the above-described embodiment, the case where the number of the movable feed rollers is two has been described. However, the number of the movable feed rollers may be one. However, in the case of this one, it is necessary to arrange the end portion in the traveling direction away from the movable feed roller immediately after the leading end portion in the traveling direction of the medium bites the fixed feed roller on the downstream side. If the medium bites on the movable feed roller even after it bites on the fixed feed roller, the trailing end side will not hit the hitting guide, so the width will be incomplete, and a twisting force will be applied to the medium. Therefore, there is a possibility that the medium may be damaged.

Further, the case where the width shifting roller is fixed in the thrust direction has been described, but it may be movable in the thrust direction. In this way, if the size of the medium is detected on the upstream side and the width adjusting roller is moved back and forth according to the detected value, the present invention can be applied to large and small media. . Furthermore, in the above-described embodiment, the case of a desk-mounted printing apparatus has been described. However, it is a matter of course that the present invention can be applied to an ATM (automatic teller machine).

[0017]

As described above, according to the present invention, the following effects can be obtained. Even if the width of the passbook to be conveyed varies (5 mm or more), skew, separation from the abutting guide, and the like can be corrected. The reason is that since the movable feed roller before the width adjusting roller is movable in the thrust direction, an excessive force is not applied to the medium to be adjusted and a large amount can be reliably adjusted. Further, there is no need to unclamp the driven roller, the feed roller, and the like, and the width adjusting roller does not use the actuator to adjust the width. A mechanism that is advantageous in time, inexpensive in cost, and highly reliable can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention,
(A) is a side view, (B) is a plan view, and (C) is an opposite side view.

FIG. 2 is a diagram illustrating an operation in the embodiment, and is a diagram illustrating a state in which a leading end of a conveyed passbook abuts on a width adjustment roller.

FIG. 3 is a view in which a passbook is further conveyed from the state of FIG. 2 and the leading end side surface in the traveling direction of the passbook is abutted against an abutment guide by the urging force of a width shifting roller.

FIG. 4 is a view in which a passbook is further conveyed from the state of FIG. 3 and the entire traveling side surface of the passbook is abutted against a butting guide by the urging force of a width shifting roller.

5 is a diagram illustrating a state in which a passbook is further conveyed from the state shown in FIG. 4 and the next passbook is conveyed in a state where the entire traveling side surface of the passbook is abutted against the abutting guide by the urging force of a width adjusting roller.

[Explanation of symbols]

 T bankbook 11, 12 movable feed roller 13 fixed feed roller 14 butting guide 15 compression spring 16 width adjustment roller

Claims (6)

[Claims] 1. A positioning reference means which is arranged along a transport direction of a medium conveyed from an upstream side and serves as a positioning reference when the medium is abutted, and a width of the medium relative to the positioning reference means. Medium biasing means having a first biasing force to be shifted; and a first biasing force arranged orthogonal to the positioning reference means, capable of moving back and forth in the direction of the positioning reference means, and usually in a direction opposite to the positioning reference means. A movable feed roller urged by a second urging force, which is a second urging force, to rotationally drive the medium downstream; a movable feed roller arranged downstream of the movable feed roller and orthogonally arranged to the positioning reference means; A fixed feed roller which is fixed in the direction of the positioning reference means and drives the medium to rotate downstream, wherein one end of a leading end of the conveyed medium has the medium width. With biasing to abut on the positioning reference unit and the other end of the medium tip when in contact with the allowed means, said first biasing force> second
A width shifting mechanism for a medium conveying device, wherein the movable feed roller is moved in the direction of the positioning reference means by an urging force, and the medium is conveyed along the positioning reference means. 2. The image forming apparatus according to claim 1, wherein the movable feed roller includes a first movable feed roller disposed on an upstream side in a medium conveyance direction and a second movable feed roller disposed between the first movable feed roller and the fixed feed roller. The width shifting mechanism according to claim 1, wherein: 3. The medium width shifting means includes a roller which abuts a side surface of the passbook, and a spring which biases the roller in the direction of the positioning reference means.
3. The width shifting mechanism of the medium transport device according to claim 2. 4. The width adjusting mechanism according to claim 1, wherein the medium width adjusting means includes a leaf spring that abuts a side surface of the passbook. 5. The width adjusting mechanism according to claim 1, wherein the means for generating the second urging force is a compression spring. 6. The width adjusting mechanism according to claim 1, wherein a material of the movable feed roller is made of a polyurethane resin.