JPH0640101A - Printer - Google Patents

Abstract

PURPOSE:To always carry out printing on an optimum position and reduce a regulation time required of an operator by a method wherein a calculated regulation value is used as a value for setting the first line printing position on printing paper in a next printing. CONSTITUTION:When a pattern jugding part 6 judges a printing pattern to be available, a medium transport part 7 discharges printing paper. During this discharge action, an image input processing part 5 reads a result printed by a printing part 1 as an image. The read image data is transmitted to a regulation value calculating part 4. The regulation value calculating part 4 calculates an optimum value for regulating the first line printing position from the data. The calculated optimum printing position is transmitted to a regulation setting part 3 to be automatically set in accordance with a program. When next printing is carried out, a regulation processing part 2 sets the first line printing position to be printed on printing paper by the printing part 1 to the regulation value preset in the regulation setting part 3. The printing part 1 starts printing from the appropriate position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing device, and more particularly to a printing device capable of adjusting the printing position of the first line.

[0002]

2. Description of the Related Art In a conventional printing apparatus capable of adjusting the printing position of the first line, an operator sets an adjustment value when adjusting the printing position of the first line, and the printing paper is set at the set position. Is fixed, printing is performed on it, and the operator measures the result by visual observation to determine the optimum value of the printing position of the first line.

The adjustment value of the print position of the first line adjusted in this way is a fixed value, and when resetting and readjustment are necessary due to deterioration of the mechanical part, etc., the operator again It is a method that must be done.

[0004]

As described above, in the conventional printing apparatus, when the printing position of the first line is adjusted, the operator sets an adjustment value on a trial basis and fixes the printing paper at that position. However, the operator has to repeat the process of printing on it and visually measuring the result and changing the setting of the adjustment value. It has the drawback that it cannot be automatically corrected when is changed.

[0005]

A printer according to the present invention comprises a printing section for performing a printing operation, an adjustment processing section for adjusting a printing position of a first line on a printing paper to be printed by the printing section, and The adjustment value setting unit for setting the adjustment value of the print position of the first line by the program, the adjustment value calculation unit for calculating the optimum adjustment value to be determined by the adjustment value setting unit, and the printing unit for printing An image input processing unit for inputting the print result as image data, and it is determined whether or not the print pattern printed by the print unit is a pattern that can be used for calculating the adjustment value of the print position of the first line. When the pattern determination unit determines that the pattern is usable, the pattern determination unit performs printing with the adjustment value set in advance by the printing unit, and the printing is performed. Input as image data to results by the image input processing unit calculates an optimum adjustment value from the image data in the adjustment value calculation unit,
The adjustment value setting unit sets the optimum adjustment value as the adjustment value of the print position of the first line, and the adjustment processing unit adjusts the adjustment value to the adjustment value at the next printing start.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

The embodiment shown in FIG. 1 has a printing unit 1 for printing.
And the adjustment processing unit 2 for adjusting the printing position of the first line on the printing paper to be printed by the printing unit 1, and the printing position of the first line on the printing paper to be adjusted by the adjustment processing unit 2 are determined by the program. Adjustment value setting unit 3, an adjustment value calculation unit 4 for calculating an optimum adjustment value to be set by the adjustment value setting unit 3, and an image input processing unit 5 for inputting the printing result printed by the printing unit as image data. And a pattern determining unit 6 for determining whether or not the print pattern printed by the print unit is a pattern that can be used for calculating the adjustment value of the print position of the first line, and an image in the image input processing unit 5. A medium transport unit 7 that transports print paper when data is input, and a control unit 8 that controls the operations of these units.

Next, the operation of the printing apparatus configured as described above will be described.

First, the adjustment processing unit 2 sets the printing position of the first line on the printing paper to be printed by the printing unit 1 to the preset adjustment value, and the printing unit 1 prints at that position. Subsequently, the pattern determination unit 6 determines whether or not the result printed by the printing unit 1 is a pattern that can be used to set the adjustment value of the printing position of the first line. If the result of this determination is a usable pattern, the medium transport unit 7
Ejects the printing paper. During this discharging, the image input processing unit 5 reads the result printed by the printing unit 1 as an image. The image data read by the image input processing unit 5 is sent to the adjustment value calculation unit 4, and the adjustment value calculation unit 4 then calculates the optimum value for adjusting the printing position of the first line. The adjustment value calculation unit 4 is sent to the adjustment value setting unit 3 and is automatically set by the program.

When performing the next printing, the adjustment processing unit 2 sets the printing position of the first line on the printing paper to be printed by the printing unit 1 to the adjustment value set in the adjustment value setting unit 3, The printing unit 1 starts printing from that position.

By repeating the above operation, it is possible to always print at the optimum position without the operator having to adjust the print position.

[0013]

As described above, the printing apparatus of the present invention prints a print position adjustment pattern, reads it as image data, and calculates the print position adjustment value from the read image data. By using the calculated adjustment value as the value for setting the print position of the first line on the print paper during the next printing, the optimum position is always adjusted even if the print position is not adjusted by the operator. There is an effect that it is possible to print on. Further, it is possible to reduce the adjustment time by the operator and prevent the setting error of the print position, and moreover, when the resetting and the readjusting are necessary due to the deterioration of the mechanism, etc., it can be automatically corrected. The advantage is that a printing device with excellent operability can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1 printing unit 2 adjustment processing unit 3 adjustment value setting unit 4 adjustment value calculation unit 5 image input processing unit 6 pattern determination unit 7 medium transport unit 8 control unit

Claims (1)

[Claims] 1. A printing unit that performs a printing operation, an adjustment processing unit that adjusts the printing position of the first line on the printing paper that is printed by the printing unit, and an adjustment value of the printing position of the first line. An adjustment value setting unit that is set by a program, an adjustment value calculation unit that calculates an optimum adjustment value to be determined by the adjustment value setting unit, and an image input process that inputs the print result printed by the printing unit as image data. Section and a pattern determining section for determining whether or not the print pattern printed by the printing section is a pattern that can be used to calculate the adjustment value of the print position of the first line, and the pattern determining section When it is determined that the pattern is a usable pattern, printing is performed according to the adjustment value preset by the printing unit, and the printing result is output by the image input processing unit. Input as image data, the adjustment value calculation unit calculates an optimum adjustment value from the image data, and the adjustment value setting unit sets the optimum adjustment value as the adjustment value of the print position of the first line, A printing apparatus comprising: the adjustment processing unit adjusting to the adjustment value at the start of the next printing.