JPH07102729B2 - Passbook printer - Google Patents

Description

The present invention relates to a passbook printer, and more particularly to a passbook printer that prints on a conveyed passbook.

[Prior Art] Conventionally, when printing data such as a savings balance on a bank passbook (hereinafter referred to as a horizontal passbook), the horizontal passbook is conveyed to a platen along a conveyance line, and a predetermined print head is used to face the horizontal passbook. Data is printed. In that case, the horizontal passbook usually has different thicknesses on the pages to be printed, so the paper thickness of the horizontal passbook is measured before reaching the platen, and the distance between the platen and the print head facing the platen is measured according to the measured value. Is adjusted to obtain a predetermined print density.

[Problems to be Solved by the Invention] Conventionally, in such a passbook printer, measurement is performed only once on one page, that is, on the previous page or the subsequent page. Therefore, the thickness of the page at the location where the measurement is performed is performed. And the thicknesses of other portions are the same, even if printing is performed with a printing pressure according to the thickness obtained by one measurement, a printing result with no print quality problem can be obtained. However, when there is variation in the thickness measurement value and the actual printing location, the printing position is not at the proper location on the printing surface, resulting in uneven printing, faint print, and print quality problems. Was there. Especially, the horizontal passbook is considerably deformed in its saved state,
Since the central part is in a raised state, such problems frequently occur.

Therefore, the present invention has been made to solve such a problem, and an object of the present invention is to provide a passbook printer which can perform printing without degrading printing unevenness and printing quality.

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

[Operation] In such a configuration, the thickness is measured at least at two or more places per page of the horizontal passbook before printing, and when the difference between the measured values is a predetermined value or more, the abnormal medium is detected. When the value is less than a predetermined value, normal printing is performed. This measurement point is preferably one point at the front end of the horizontal passbook and two points at the center of the page, as seen in the path line of the passbook in the conveying direction.

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

[Examples] Hereinafter, details of the present invention will be described based on Examples shown in the drawings.

FIG. 1 shows a passbook printer according to an embodiment of the present invention. In FIG. 1, the reference numeral 1 designates a paper transporting base, which is shown in FIG. 2 along the paper transporting base. Such a horizontal passbook 14 is conveyed. Horizontal passbook 14
Is inserted into the pair of transport rollers 5 and 6 and is attached to the printing platen 4.
Heading for. The print head 3 is arranged so as to face the print platen 4. Conveying rollers 7, 8 and 9, 10 are arranged behind the print head.

Among the transport rollers 5 to 10, the transport rollers 6, 8 and 10 arranged below are driven by the transport motor 12 and are respectively configured as drive rollers. The carry motor 12 is a control circuit (controller) via a drive circuit 17 as shown in FIG.
Controlled by 15. On the other hand, the conveying rollers 5, 7, 9 arranged on the upper side are configured as pressure contact rollers, and are in contact with the lower drive roller under pressure to enter the horizontal passbook 14.
To be transported.

A detection lever 2 for detecting the paper thickness of the horizontal passbook 14 is arranged adjacent to the transport rollers 5 and 6, and information on the paper thickness detected by the detection lever 2 is input to the paper thickness detection circuit 13. It The paper thickness detection lever 2 and the paper thickness detection circuit 13 are input to the control circuit 15 as shown in FIG. 3, and the control circuit 15 stores the detected thickness in the memory 18,
The detected thicknesses of at least two places are compared by the comparison circuit 19. Accordingly, the print head 3 is driven through the drive circuit 16.
The motor 11 that drives the vertical direction is operated. As a result, the print head 3 moves up and down according to the detected thickness, and the print pressure is adjusted according to the thickness of the horizontal passbook 14.

Next, the operation of the apparatus thus configured will be described.

In this embodiment, as shown in FIG. 2, a horizontal passbook
The thicknesses of at least two points per page 14 are measured, for example, the front edge A and the central portion B of the front page, and the edge C and the central portion D of the rear page. First, as shown in step S1 of FIG. 4, the horizontal passbook 14 is transported by the transport rollers 5 and 6 until the thickness measurement position A of the horizontal passbook 14 reaches the position of the detection lever 2. Subsequently, in step S2, the thickness of the horizontal passbook 14 is measured at the thickness measuring position A, and the measured value x1 is obtained and stored in the memory 18. Next, in step S3, the horizontal passbook 14 is conveyed until the thickness measurement position B of the horizontal passbook reaches the position of the detection lever 3. Then, in step S4, the thickness of the horizontal passbook at the thickness measuring position B is measured, and the value x2 is obtained and stored in the memory 18. The difference is measured in step S5, and when the thickness is equal to or less than the allowable value c for the same thickness, the normal printing operation is performed in step S6, and when the difference is not allowable, the abnormal medium is processed in step S7.

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

In the above-mentioned example, the measurement position A is the front end per page of the passbook, and the measurement position B is set in the substantially central portion.
The present invention is not limited to this position, and the measurement positions may be measured not only at two positions but also at a plurality of positions.

As an example of performing the abnormal medium processing in step S7,
For example, if the passbook is discharged without printing as an error, or the thickness is measured for each line and the print head 3 is moved up and down each time, normal printing is performed even if there is an unacceptable thickness deformation. It will be possible to obtain.

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

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the device of the present invention, FIG. 2 is a perspective view showing a bankbook being conveyed, FIG. 3 is a control block diagram of the device of the present invention, and FIG. 4 is a flow chart showing the flow of control. Is. 2 …… Paper thickness detection lever 3 …… Print head 5-10 …… Conveying roller 13 …… Paper thickness detection circuit 14 …… Horizontal passbook

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Claims (3)

[Claims] 1. A passbook printer that prints on a conveyed passbook, and a control for controlling printing according to a sheet thickness detection device arranged along a conveyance line and a thickness detected by the sheet thickness detection device. Means is provided, and at least two paper thicknesses per page of the passbook are measured along the conveyance direction of the passbook, and normal printing is performed only when the difference between the measured values is a predetermined value or less. Printer for passbook. 2. The passbook printer according to claim 1, wherein the passbook is processed as an abnormal medium when the difference between the measured values is a predetermined value or more. 3. The thickness of the passbook is measured at two points, a front end and a substantially central portion of one page, along the transport direction, according to claim 1 or 2. Printer for passbook.