Alignment system and process of automatically controlling bidire

Details Alignment system and process of automatically controlling bidire Alignment system and process of automatically controlling bidire

1997-06-20

2000-08-29

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

B41J 29393

Patent

active

061097217

ABSTRACT:
A bidirectional print position alignment system for automatically aligning bidirectional printing position of a printhead in a serial printer as a function of high sensor accuracy and clock frequency of a CPU controlling the sensor. The alignment system includes a sensing section for sensing a position of a printhead for vertical alignment, a misalignment detecting section for detecting mechanical misalignment of the printhead, and a printing section for correcting said mechanical misalignment of the printhead and printing information on a printable medium after said mechanical misalignment of the printhead is corrected. Since the vertical alignment operation according to the present invention is dependent upon sensor stability and clock accuracy instead of the user's visual confirmation, the accuracy in setting of a print position of the printhead can be realized and the printing quality can be enhanced.

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