JPH041072A - Printer for passbook - Google Patents

Abstract

PURPOSE:To make it possible to perform normal printing only when a difference between measured values is not more than a specified value by measuring the thickness of recording paper at two spots per page of a passbook along the carrying direction of the passbook being carried. CONSTITUTION:A lateral passbook 14 is carried by carrying rollers 5, 6 until a thickness measuring position A of the lateral passbook 14 reaches the position of a detecting lever 2. Then, the thickness of the lateral passbook 14 is measured at the thickness measuring position A, and an obtained measured value x1 is stored in a memory 18. Then, the lateral passbook 14 carried until a thickness measuring position B of the lateral passbook 14 reaches the position of the detecting lever 2, and the thickness of the lateral passbook is measured at the thickness measuring position B, and an obtained value x2 is stored in the memory 18. A difference between the values at both measuring positions is measured, and the difference is not more than an allowable value (c) to be the same thickness, normal printing motion is performed. When the difference cannot be allowed, the passbook is treated as an abnormal medium. The same process is performed for the rear pages also at measuring positions C, D. By this method, printing quality of lateral passbooks can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a passbook printer, and more particularly to a passbook printer that prints on a passbook that is being conveyed.

[Prior Art] Conventionally, when printing deposit balance data on a bank passbook (hereinafter referred to as a horizontal busbook), the horizontal busbook is conveyed along a conveyance line to a platen, where it is printed in a predetermined position by opposing print heads. data will be printed. In this case, the paper thickness of the horizontal bus book is usually different depending on the page to be printed, so the paper thickness of the horizontal bus book is measured before reaching the platen, and the print head facing the platen is adjusted according to the measured value. The distance is adjusted to obtain a predetermined print density.

[Problems to be Solved by the Invention] Conventionally, in such passbook printers, measurement is performed only once on one page, that is, the previous page or the next page, and therefore the thickness of the page where the measurement is performed is In the case where the thickness at the other locations is the same, printing results with no problems in printing quality can be obtained even if printing is performed using a printing pressure that corresponds to the thickness obtained in the -th measurement. However, if there is a discrepancy between the measured thickness value and the actual area where printing is performed, the printing position will not be in the correct location with respect to the printing surface, resulting in uneven printing or blurred printing, which may cause printing quality problems. was. In particular, the horizontal bus book undergoes considerable deformation in its preserved state.
This kind of problem frequently occurred because the center part was raised.

Therefore, the present invention has been made to solve these problems, and an object of the present invention is to provide a passbook printer that can print without causing uneven printing or deteriorating print quality.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a paper thickness detection device disposed along a conveyance line in a passbook printer that prints on a conveyed passbook; A control means for controlling printing according to the thickness detected by the paper thickness detection device is provided, the paper thickness is measured at at least two places per page of the passbook along the conveyance direction of the passbook, and the difference between the measured values is determined. A configuration was adopted in which normal printing is performed only when the value is less than a predetermined value.

[Function] In such a configuration, the thickness is measured at at least two locations per page of the horizontal bus book along the conveyance direction before printing, and if the difference between the -11 constant values is greater than a predetermined value, an abnormality is detected. It is treated as a medium, and when the value is below a predetermined value, normal printing is performed. Preferably, the measurement points are one at the front end of the horizontal bus book and two locations approximately at the center of the page when viewed from the path line in the conveyance direction of the bankbook.

In this way, the paper thickness is measured at at least two locations in the transport direction, and if the measurement difference is less than the tolerance, normal printing is performed, and if it is not acceptable, it is treated as an abnormal medium, so printing is always performed. A passbook printer of good quality can be obtained.

[Example 1] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

FIG. 1 shows a passbook printer according to an embodiment of the present invention, and what is indicated by the reference numeral 1 in the figure is a paper conveyance table, and along this paper conveyance table, the printer shown in FIG. A horizontal bus book 14 like this is transported. The horizontal bus book 14 is inserted into a pair of transport rollers 5.6 and faces towards the print platen 4, opposite to which the print head 3 is arranged. Conveyance rollers 7.8 and 9.10 are arranged behind this print head.

Among the conveyance rollers 5 to IO, the conveyance rollers 6, 8, and 10 disposed below are driven by the conveyance motor 12, and are each configured as a drive roller. The transport motor 12 is controlled by a control circuit (controller) 15 via a drive circuit 17, as shown in FIG. On the other hand, the transport roller 5.7.9 arranged above is configured as a pressure roller,
The horizontal bus book 14 that comes in pressure contact with the lower drive rollers and enters therebetween is conveyed.

A detection lever 2 for detecting the paper thickness of the horizontal bus book 14 is arranged adjacent to the transport roller 5.6, and information on the paper thickness detected by this detection lever 2 is sent to the paper thickness detection circuit 1.
3 is input. The paper thickness detection lever 2 and the paper thickness detection circuit 13 are input to a control circuit 15 as shown in FIG. A comparator circuit 19 compares the thickness at at least two locations. Accordingly, the drive circuit 16
The motor 11 for driving the printing spatula l-'3 in the vertical direction is activated via the . The print head 3 is moved up and down according to the detected thickness, and the printing pressure is adjusted in accordance with the thickness of the horizontal bus book 14.

Next, the operation of the device configured as described above will be explained.

In this embodiment, as shown in FIG. 2, there are at least two locations per page of the horizontal bus book 14, for example, at the front edge A and the center area B of the previous page, and at the edge C and the center area of the rear page. Thickness is measured.

First, as shown in step Sl in FIG. 4, the horizontal pass book 14 is conveyed by the conveying rollers 5.6 until the thickness measurement position A of the horizontal pass book 14 comes to the position of the detection lever 2. Next, in step S2, the thickness of the horizontal passbook 14 is measured at the thickness measurement position A, and the measured value xi is obtained and stored in the memory 1.
8.

Next, in step S3, the horizontal passbook 14 is transported 1M until the thickness measurement position B of the horizontal passbook comes to the position of the detection lever 2, and in step S4, the thickness of the horizontal passbook at the thickness measurement position B is measured. Then, the value x2 is obtained and stored in the memory 18. The difference is measured in step S5, and if it is less than the allowable value C for the same thickness, step S6
A normal printing operation is performed in step S7, and if the medium is unacceptable, it is processed as an abnormal medium in step S7.

Similarly, for the next page, the same thickness measurement is performed at measurement positions C and D, and if the difference in thickness at each measurement position is less than the allowable value, normal printing is performed, and if it is an unacceptable value, printing is performed normally. is treated as an abnormal medium.

In the above example, the measurement position A is the front edge of one page of the passbook, and the measurement value WIB is set approximately at the center, but the present invention is not limited to this position, and the measurement position may be measured not only at two locations but also at multiple locations.

Examples of abnormal media processing in step S7 include ejecting the passbook without printing as an error, or measuring the thickness of each line and moving the print head 3 up and down each time. This makes it possible to obtain normal printing even if there is an unacceptable thickness deformation.

[Effects of the Invention] As described above, in the present invention, the thickness is measured at at least two locations along the conveyance direction, so that the printing quality of the horizontal passbook can be improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of the device of the present invention, Fig. 2 is a perspective view showing a passbook being conveyed, Fig. 3 is a control block diagram of the device of the present invention, and Fig. 4 is a flowchart showing the flow of control. It is. 2--Paper thickness detection lever 3--Print heads 5-10--Transport roller 13--Paper thickness detection circuit 14--Horizontal bus book

Claims (1)

[Scope of Claims] 1) A passbook printer that prints on a passbook that is being conveyed, comprising: a paper thickness detection device disposed along a conveyance line; and a paper thickness detection device that prints according to the thickness detected by the paper thickness detection device. and a control means for measuring the paper thickness at at least two places per page of the passbook along the conveying direction of the passbook, and performing normal printing only when the difference between the measured values is less than or equal to a predetermined value. A unique passbook printer. 2) The passbook printer according to claim 1, wherein the passbook is treated as an abnormal medium when the difference between the measured values is greater than or equal to a predetermined value. 3) The thickness of the passbook is determined from the front end to the thickness of 1 along the conveyance direction.
3. The passbook printer according to claim 1, wherein the printer measures two locations approximately at the center of the page.