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Serial printer, encoder, and serial printer control method

A technology of printers and encoders, which is applied in the field of encoders, can solve problems such as difficulty in convenient operation, printing position offset, etc.

Inactive Publication Date: 2007-10-24
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to change the circuit or rewrite the ROM, it is difficult to do it easily because it involves the operation of disassembling the printer.
[0029] As described above, in the serial printer, in addition to the fluctuation of the play between the shaft of the drive motor and the carriage, there is a delay from the application of voltage to the pulse motor to the start of movement of the carriage due to changes in the environment or over a long period of time. There is a problem of positional deviation in the printing position during reciprocating printing due to fluctuations in time, etc.

Method used

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  • Serial printer, encoder, and serial printer control method
  • Serial printer, encoder, and serial printer control method
  • Serial printer, encoder, and serial printer control method

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Embodiment Construction

[0070] Hereinafter, the serial printer of the present invention, its control method, and an encoder suitable for the serial printer will be described in detail using the drawings.

[0071] Fig. 1 is a schematic diagram illustrating a serial printer of the present invention. In addition, in the figure, the configuration of correcting the misalignment of the printing position, which is the object of the present invention, is mainly described in the serial printer, and configurations included in other serial printers are omitted. In addition, FIG. 1( a ) shows a structural example of driving the carriage using a timing belt, and FIG. 1( b ) shows a structural example of driving the carriage using a cylindrical camshaft.

[0072] The serial printer 1 shown in FIG. 1( a ) includes: a printhead 3 ; a carriage 2 on which the printhead 3 is mounted; a drive mechanism for driving the carriage 2 ; and a control mechanism for controlling the drive mechanism.

[0073] The drive mechanism...

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PUM

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Abstract

In generating a timing of print drive for controlling the printing of a printhead on the basis of a detection signal of an encoder, the timing of print drive is adjusted by adjusting the detection signal of the encoder to correct a displacement of the printing position in reciprocating printing. A serial printer comprises a motor for reciprocating a carriage with a printhead and an encoder for detecting the rotation of a motor shaft. The serial printer controls the timing of print drive of the printhead on the basis of a detection signal detected by the encoder and adjusts the duty ratio of the detection signal of the encoder.

Description

technical field [0001] The present invention relates to a serial printer that drives a print head while reciprocating a carriage on which the print head is mounted, a control method thereof, and an encoder suitable for controlling the serial printer. Background technique [0002] Conventionally, a serial printer is known that drives a print head to perform printing while reciprocating a carriage by rotating a pulse motor in forward and reverse directions. [0003] In such a serial printer, as a method of controlling the driving of the carriage or the print head, a method of using the timing of a pulse motor drive signal for driving the pulse motor for driving, or detecting the timing of the pulse motor for driving with an encoder is known. Rotate and utilize the method to detect the signal. [0004] In such a serial printer, in order to prevent printing misalignment, it is necessary to control the driving of printing elements of the print head in addition to controlling the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J19/18
CPCB41J19/005B41J19/202B41J19/142
Inventor 国田雅夫
Owner CITIZEN WATCH CO LTD