JPH0569625A - Serial printer device - Google Patents

Abstract

(57) [Summary] [Purpose] Automatically corrects print misalignment during test printing without human intervention. [Configuration] Printing is performed in print mode A, and position detection is performed. Next, printing is performed in the print mode B, and the position data of the partner for position detection is stored in the print misregistration amount storage unit 14 and corrected respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a serial printer device.

[0002]

SUMMARY OF THE INVENTION According to the present invention, in a serial printer device, at the time of test printing activated by a predetermined method, the graphic pattern printing means prints a line including one or more graphic patterns, and each graphic pattern position is determined. After the detection by the engineering position detecting means, the deviation amount in the printing unit is obtained by the printing deviation calculating means and stored in the printing deviation amount storage means, and the adjustment is visually performed by applying the printing deviation correction means in the subsequent normal printing. It is possible to perform good printing in normal printing without performing the above.

[0003]

2. Description of the Related Art In a conventional serial printer, for example, print misalignment is generally adjusted by visual inspection in bidirectional printing, and even if an optical position detecting means is provided, a print carriage unit Alternatively, it is general to use the detection difference during bidirectional printing of a predetermined position on the platen for correction.

[0004]

However, in the visual adjustment, the adjustment accuracy depends on the experience and sensation of the operator, and the adjustment man-hours are large, and both the print carriage portion and the predetermined position on the platen are required. In the method of obtaining the detection difference during the orientation printing, there is a problem in reliability because the object to be detected is not the printing portion on the medium sheet.

Therefore, the present invention is intended to solve such a problem, and an object of the present invention is to accurately and automatically perform printing deviation correction during test printing without human intervention. is there.

[0006]

A printer device according to the present invention prints a graphic pattern printing means for printing one or more graphic patterns in one line, and a paper on which the graphic pattern printing means has been executed. Optical position detecting means for detecting the position of each figure pattern by scanning in one direction, and a print deviation calculating means for performing a predetermined calculation based on the detection value detected by the optical position detecting means. A printing deviation amount storage means for storing the calculation result obtained by the printing deviation calculation means, and a printing deviation for using the value stored in the printing deviation amount storage means for printing deviation correction in normal printing. In a serial printer device including a correction unit, a line including one or more graphic patterns is printed by the graphic pattern printing unit during test printing activated by a predetermined method. However, after each graphic pattern position is detected by the optical position detecting means, the amount of deviation in the printing section is obtained by the printing deviation calculating means and stored in the printing deviation amount storage means, and the printing deviation in the subsequent normal printing. A feature of the present invention is that good printing is performed in normal printing without any correction means and without visual adjustment.

It may be used for automatic correction of print deviation between lines in bidirectional printing. It may also be used for automatic correction of misalignment in the printing direction of each dot in a row. Further, it may be used for automatic correction in each print mode in a serial printer having one or more print modes.

[0008]

According to the above construction of the present invention, it is possible to perform good printing in normal printing without making visual adjustment.

[0009]

EXAMPLES The present invention will be described in detail below based on examples.

FIG. 1 shows an embodiment comprising a microcomputer 21 and peripheral devices. The microcomputer 21 shown here is an overall collection of a CPU, a ROM, a RAM, an input / output port, an A / D converter and the like.

The graphic pattern printing means 11 and the optical position detecting means 12 are connected to the input / output port of the microcomputer 21. Accordingly, when the graphic pattern print request signal is sent from the microcomputer 21, the print operation is executed in the X direction in the print mode A. When the optical position detection request signal is sent, scanning is performed in a specific direction to execute the position detection operation, and the detected position information Aα is read by the microcomputer 21. Further, after the paper feeding operation is executed, the graphic pattern printing operation is executed in the Y direction in the print mode A, and the position detecting operation is executed in the specific direction. The detected position information Aβ is read by the microcomputer 21. Next, printing and detection operations are similarly performed in different print modes B, and the detected position information Bα and Bβ are read by the microcomputer 21. Further, in the microcomputer 21, as the print misalignment calculation means 24, an arithmetic expression for the print misalignment calculation is set in the ROM or the RAM. For example, if [A, B] α- [A, B] β is set, the values of Aα-Bβ and Bα-Aβ are stored in the print misregistration amount storage means 14 in the microcomputer 21.
As a result, in the subsequent bidirectional printing, when printing in the X or Y direction, the print misalignment correction unit 15 performs corrections of Aα-Aβ in the print mode A and Bα-Bβ in the print mode B, respectively. The above-mentioned A, B and X, Y are different print modes and print directions. Further, the above-mentioned arithmetic expression [A, B] α- [A, B] β is merely an example. The above is an example of automatic correction of print misalignment between lines in bidirectional printing.

[0012]

As described above, according to the present invention, it is possible to perform good printing in normal printing without making visual adjustment.

[Brief description of drawings]

FIG. 1 is a diagram clearly showing a configuration of the present invention.

[Explanation of symbols]

 11 Graphic Pattern Printing Means 12 Optical Position Detecting Means 13 Printing Misalignment Calculating Means 14 Printing Misalignment Storage Means 15 Printing Misalignment Correcting Means

Claims (4)

[Claims] 1. A graphic pattern printing means for printing one or more graphic patterns in one line, and a unidirectional scanning of the printed paper in the printing direction to detect each graphic pattern position. An optical position detecting means for performing a print deviation calculating means for performing a predetermined calculation based on a detection value detected by the optical position detecting means, and a calculation result obtained by the print deviation calculating means. A serial printer apparatus comprising: a print misregistration amount storage unit for performing the process; and a print misregistration correction unit for using the value stored in the print misregistration amount storage unit for print misregistration correction in normal printing. At the time of the test printing, while the line including one or more graphic patterns is being printed by the graphic pattern printing means, each graphic pattern position is detected by the optical position detecting means. After the detection, the shift amount in the printing unit is obtained by the print shift calculating unit and stored in the print shift amount storage unit, and in the subsequent normal printing, the print shift correction unit is not provided and the print shift is normally adjusted without visual adjustment. A serial printer device that performs good printing. 2. A serial printer according to claim 1, wherein a print deviation between lines in bidirectional printing is automatically corrected.
Printer device. 3. The serial printer device according to claim 1, wherein a deviation in the printing direction of each dot in a line is automatically corrected. 4. A serial printer device having one or more print modes, wherein the automatic correction according to claim 1, claim 2 or claim 3 is performed in each print mode.