Printing device, and a system having the printing device and an

Details Printing device, and a system having the printing device and an Printing device, and a system having the printing device and an

1998-12-23

2000-10-10

Hilten, John S.

Typewriting machines

Control of print position along print-line by signal...

400283, B41J 2116

Patent

active

061294640

ABSTRACT:
A printing device comprises a print head for printing an image on a recording medium, a carriage mounted for movement along the recording medium and supporting thereon the print head, an encoder member having division lines, and a sensor supported by the carriage for movement therewith for reading the division lines of the encoder member and outputting pulse signals corresponding to reading of the division lines. A position calculating device calculates a position of the carriage in accordance with the pulse signals from the sensor. An error detection/correction device detects an error in reading the division lines of the encoder member by the sensor and outputs an error correction signal to the position calculating device. The position calculating device calculates a correct position of the carriage in accordance with the error correction signal from the error detection/correction device. The print head prints an image on the recording medium in accordance with an output signal from the position calculating device corresponding to the correct position of the carriage.

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