Image-forming device

Details Image-forming device Image-forming device

2005-03-29

2005-03-29

Nolan, Jr., Charles H. (Department: 2854)

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

C400S061000, C400S070000, C400S074000, C400S076000, C347S248000

Reexamination Certificate

active

06872017

ABSTRACT:
A printer prints a black mark BM having a left mark edge BMa and a right mark edge BMb on a paper P. An encoder offset SH_L_EDG for the left mark edge BMa is set based on the difference between the carriage position (encoder value PR_ENC_L) that is detected when the print head10prints the left mark edge BMa and the carriage position (encoder value SEN_ENC_L) that is detected when the media sensor68detects the left mark edge BMa. Similarly, an encoder offset SH_R_EDG for the right mark edge BMb is set based on the difference between the carriage position (encoder value PR_ENC_R) that is detected when the print head10prints the right mark edge BMb and the carriage position (encoder value SEN_ENC_R) that is detected when the media sensor68detects the right mark edge BMb. In this way, the printer can suppress the effects of mounting error and can prevent a decline in accuracy when detecting edges of the paper P.

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