JPS62169662A - System for controlling printing position - Google Patents

Abstract

PURPOSE:To enable highly accurate printing, by correcting the printing position control information supplied to a controller on the basis of the correction value in a correction table and correcting the feed error of paper by a printer side. CONSTITUTION:At first, CPU1 reads the position control information filed in a hard disk driver (HDD)9 through a controller (FDC/HDC)2 and performs position control analysis on the basis of said information. Next, CPU1 reads the correction table stored in HDD9 through FDC/HDC2 to perform the correction of the position control information. This correction table is one wherein a negative value is formed with respect to 'elongation' generated during the feed of cut paper in a printer at a development dot level and a positive value is formed with respect to 'contraction' on the basis of said dot level. By performing printing on the basis of this corrected position control information, printing with a high printing position accuracy can be carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a print position control system, and more particularly to a print position control system for highly accurately correcting paper conveyance errors in a print system that prints on cut sheets.

Prior Art Conventionally, in printing systems that print on cut paper, the method for transporting the cut paper is generally as follows:
A method using a pair of transport rollers and a method using a clamp have been used.

Among these methods, the method of transporting cut sheets using a pair of transport rollers has a limit on transport accuracy, and requires high precision, such as printing on cut sheets with a pre-printed format (hereinafter referred to as "pre-format paper"). In printing, there was a problem in that the required precision could not be obtained.

Furthermore, although the latter transportation method using clamps can provide printing position accuracy, there is another problem in that the effective printing area is reduced by the clamps.

Purpose The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned problems in conventional printing systems and to achieve high precision by correcting paper conveyance errors on the printer side. The object of the present invention is to provide a print position control method that enables printing of images.

Configuration The above object of the present invention is a printing system that includes a printer and a controller that controls the printer and prints on cut paper, which provides a correction table that stores print position correction data corresponding to print lines and supplies the correction table to the controller. This is achieved by a print position control method in which print position control information is corrected using correction values in the correction table.

Hereinafter, the configuration of the present invention will be explained in more detail based on examples.

FIG. 2 shows an example of the configuration of a printing system that is an embodiment of the present invention.

In the figure, 1 is a CPU that controls the entire system, 2 is a floppy disk driver (FDD), 8 is a hard disk driver (HDD), and 9 is a controller (FDC/HD).
C), 3 is an interface of the magnetic tape unit 10;
Reference numeral 4 indicates a printer interface, 5 a memory for developing print information, and 6 a keyboard display.

In the system configured as shown in FIG. 2, the present invention is applicable to generating print information from print data input from the magnetic tape unit 10' based on position control information filed in the HDD 9, which will be described later. The print position is corrected based on the contents of the correction table.
This generates error-free print information.

The above correction table compensates for the characteristics of the printer, and uses the deviation (elongation, shrinkage) of the print position that occurs when transporting cut paper in the printer as a correction value for the development position address, and uses it as a correction value for the expansion position address for the above "elongation". indicates a negative value, "
For "shrinkage", a positive value is created at the expanded dot level.

FIG. 3 shows an example of the above-mentioned correction table, and FIG. 4 shows an outline of the print position deviation that occurs during conveyance of cut sheets, which is the background thereof.

The correction table shown in FIG. 3 shows print position correction values in units of dots corresponding to print lines, and in this example, the above correction values are.

It remains valid until the next correction value is specified, that is, it is displayed in such a way that it is reset by a new correction value.

In Figure 4, A shows the theoretical value and B shows the measured value. For example, the nth print line should be at the 50th dot, but in reality it is at the 52nd dot according to the dimension measurement. It represents a situation like this. If we calculate backwards from this to accurately determine the print position, we can see that the n-th print line can be instructed to be printed at the 48th dot in this printer.

The correction table is a table of the correction values obtained in this way, and is stored in the hard disk.

The correction table can be created in the field by the manufacturer or the user through the keyboard display 6 shown in FIG. 2, and can be registered or changed.

A flowchart of print information generation processing including the above position correction is shown in FIG.

The operation of this embodiment will be explained below with reference to FIGS. 1 and 2.

First, the CPUI connects the HDD9 via FDC/HDC2.
The position control information stored in the file is read (step 11), and position control analysis is performed based on this (step 12).

Next, the CPUI connects the HDD9 via FDC/HDC2.
Read out the correction table stored in (step 13) and correct the position control information (step 14)
.

By performing printing based on this corrected position control information, it is possible to perform printing while maintaining high print position accuracy, and it is possible to realize print position control suitable for printing on the preformat paper, etc.

The above embodiment shows an example in which a correction table storing print position correction data is displayed in a manner that is valid until the next correction value is specified, that is, it is reset by a new correction value. However, it goes without saying that this may be done using other methods, such as a method that always displays the difference from the previous print line.

Effects As described above, according to the present invention, a correction table for storing print position correction data corresponding to print lines is provided,
Since the print position control information supplied to the controller is corrected using the correction values in the correction table, it is possible to correct paper conveyance errors on the printer side and perform high-precision printing. This has the remarkable effect of realizing a print position control system that is effective for printing on format paper.

[Brief explanation of drawings]

FIG. 1 is a flowchart of processing according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the configuration of a printing system according to an embodiment of the present invention, FIG. 3 is a diagram showing an example of a correction table, and FIG. The figure is a diagram illustrating an overview of print position deviations that occur during cut paper conveyance. 1: CPU, 2: FDC/HDC, 5: Memory, 6: Keyboard display, 7: Printer, 8:
FDD, 9: HDD, 10: Magnetic tape device, 1
1-14: Processing steps. Patent applicant Rico Co., Ltd. - Nth line □ 50 dots □ 48 dots □ 150 □ 96 dots 140 dots

Claims (1)

[Claims] (1) In a printing system that includes a printer and a controller that controls the printer and prints on cut sheets, a correction table that stores print position correction data corresponding to print lines is provided, and print position control information to be supplied to the controller is provided. . A print position control method in which correction is performed using correction values in the correction table.