JPS63185663A - Passbook printer - Google Patents

Abstract

PURPOSE:To fix the stroke of a hammer pin and enable the title printer to be used for both vertical type passbooks and horizontal type passbooks, by adding a polyhedral rotary platen mechanism for detecting the kind of a passbook and the paper thickness according to the number of pages of the passbook, correcting a difference in the thickness, and constantly maintaining a printing surface on the same plane in relation to a printing held. CONSTITUTION:A polyhedral platen 1 has a polygonal cross-sectional shape, has a lower surface for placing a part of a larger number of pages of a passbook thereon and a higher surface for placing a part of a smaller number of pages of the passbook thereon, and can be adjusted to have an appropriately sized surface by rotating the platen 1, so that it is made possible to obtain the same printing plane irrespective of differences in thickness of printing pages. When a vertical or horizontal type passbook 7 is inserted into a passbook thickness detecting mechanism part A by a feeding roller 8 and a press roller 4, the moving quantity of a thickness-detecting disk 5 moved by an amount corresponding to the thickness of the passbook is detected by a detecting switch 6, and the platen 1 is rotated by a stepping motor 2 according to a detection signal from the switch 6, whereby an optimal plane for the passbook is selected. Then, the passbook 7 is fed through a passbook feeding mechanism part B to a printing mechanism part C, and is printed by a printing head 3.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is applicable to a passbook printing device, particularly to both vertical and horizontal passbook printing. The present invention relates to a passbook printing device equipped with a mold rotating platen.

(Prior Art) Conventionally, a passbook printing device having a dot-impact printing mechanism includes a print head, a mechanism section that moves the head back and forth in the left and right directions, a conveying section that transports the passbook, and a passbook printing device that prints the passbook at the printing position. It was constructed with a single-planar platen for carrying. In the case of bank passbooks, vertical passbooks are generally smaller than horizontal ones, but have more pages, and the print head moves back and forth in the row direction of the open page; In this case, the thickness changes within the same printing line due to the difference in the number of pages on the left and right sides, so the stroke of the hammer bin of the flint head must be changed in accordance with the change in paper thickness of the passbook type to be printed.
To avoid this, separate bankbook printing devices were used for vertical and horizontal bankbooks.

(Problems to be Solved by the Invention) In the above-mentioned conventional passbook printing device, when printing a vertical passbook, the thickness of the paper changes within the same printing line due to the difference in the number of pages on the left and right sides, and therefore, the thickness of the paper changes within the same printing line. Since the stroke of the hammer pin changes by the difference, a longer hammer pin stroke is required for a vertical passbook than when printing on a normal plane.

Therefore, it is necessary to use a print head with a long stroke and an expensive high driving force, which also has the disadvantage of reducing the printing speed.

The present invention was made to deal with this situation, and even when printing on any page of a vertical passbook, the difference in thickness on both sides of the opened page is detected in advance and this can be corrected. It is an object of the present invention to provide a passbook printing device that is equipped with a platen mechanism that corrects the problem and can handle left and right pages as if they were on the same plane.

(Means for Solving the Problems) In order to achieve the above object, the passbook printing system [K
In addition, a mechanism was added to detect the paper thickness depending on the type of passbook and the number of pages, and a polyhedral rotating platen mechanism was added to correct the difference in paper thickness and keep the printing surface always on the same plane as the print head. By adopting this configuration, the difference in paper thickness between the left and right pages is corrected, and the stroke of the hammer bin becomes constant, just like when printing on a single flat surface, making it possible to print on both vertical and horizontal passbook types. Can be configured into a device.

(Example) Next, the present invention will be explained by way of example with reference to the drawings.

FIG. 1 is a side sectional view of a passbook printing device according to an embodiment of the present invention. In this figure, a passbook guide plate 10 for guiding the passbook 7 is placed in the insertion slot for the passbook 7, and then conveyor rollers 8 and 9'f for holding and conveying the passbook.

There is a transport mechanism section that includes. Following this, there is provided a printing mechanism section including a print head 3 for printing the bankbook, and a rotatable polyhedral platen 1 provided below the print head and on which the bankbook to be printed is placed. .

The print head is of a dot impact type that can reciprocate left and right (laterally) with respect to the direction in which the passbook 7 travels. The polyhedral platen 1 has a polygonal cross section, and as shown in FIG. 2, the polygonal surface on which the thicker paper with more pages is placed is lower, and the polygonal surface on which the smaller page is placed is lower. It is made high and can be rotated to adjust the surface to an appropriate dimension, so that the same printing plane can be obtained regardless of the difference in the thickness of the printed page. Note that FIG. 2 is a pseudo-illustration of how the surfaces of the pages of the bankbook 7 are on the same plane suitable for printing. A paper thickness detection mechanism for passbooks is provided below the passbook guide plate 10, and includes a press roller 4, a detection disc 5, and a detection switch 6. That is, the press roller 4 for pressing the passbook against the conveyance roller 8Vc is pivotally supported at the tip of a lever 11, and the rear end of the lever is fixed to the base of a thickness detection disk 50 having an L-shaped bent portion.

A tension spring 12 attached to the bending tip of the above-mentioned bulging and bending part.
The bankbook is pressed against the conveyance roller 8 by the spring force. A detection switch 6 is arranged facing the peripheral edge of the thickness detection disk 5. The press roller 4 rotates around the base of the thickness detection disk 5 as a fulcrum in accordance with the thickness of the page of the passbook, and the thickness detection disk 5 also rotates around the base, and the rotational displacement is detected by the detection switch 6. This allows the thickness of the open page of the passbook to be detected.

In the above configuration, this compensation operates as follows. A vertical or horizontal bankbook 7 is inserted into the bankbook thickness detection mechanism section A by a conveyance roller 8 and a press roller 4. When the passbook is sandwiched between the press roller 4 and the transport roller 81C, the thickness detection disk 5 is actuated by the thickness thereof, and the detection switch 6 detects the amount of operation. The polyhedral rotary platen 1 is rotated by the step motor 2 based on predetermined conditions based on the detection signal.

The optimal position for the passbook, ie, one plane of the polyhedron, is selected. Thereafter, one bankbook 7 is sent to the printing mechanism section CK via the bankbook transport mechanism section B, and printing is started by the print head 3.

(Effects of the Invention) Since the present invention has the above-described configuration, conventionally, passbook printing devices have been used exclusively for vertical passbooks and horizontal passbooks, but with the present invention, only one device can be used. Since it can print on both types of passbooks and use a print head with a short stroke, it has the effect of enabling high-speed printing at low cost and improving performance.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the passbook printing device of the present invention. FIG. 2 is a sectional view taken along the line -n in FIG. 1. 1... Polyhedral rotating platen. 2...Step motor, 3...Print head, 4...Press roller, 5...Thickness detection disk. 6...Detection switch, 7...A IJ! . 8.9... Conveyance roller, 10... Guide plate.

Claims (1)

[Claims] a dot-impact printing mechanism in which a print head moves back and forth to the left and right with respect to the traveling direction of the passbooks; a conveyance mechanism for conveying the passbooks; a detection mechanism for detecting paper thickness of the passbooks; and a polyhedral platen that rotates in response to a signal issued by the detection mechanism to provide a flat surface that is optimal for the paper thickness of the bankbook, and on which the printed page portion of the bankbook is placed. Characteristic passbook printing device.