Ink jet printing apparatus and printing position setting...

Details Ink jet printing apparatus and printing position setting... Ink jet printing apparatus and printing position setting...

2007-08-07

2007-08-07

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S019000

Reexamination Certificate

active

10788137

ABSTRACT:
An inkjet printing apparatus prints by scanning an inkjet printhead for discharging ink and a printing medium relative to each other. The printhead includes a first nozzle group used to print a dot having a first density, and a second nozzle group used to print a dot having a second density. The inkjet printing apparatus has a first printing mode in which only one of the first and second nozzle groups is used during one printing scan, and a second printing mode in which the first and second nozzle groups are driven at different timings during one printing scan. In this inkjet printing apparatus, a pattern for adjusting the relative printing positions of the nozzle rows in the first printing mode is printed. From this pattern, set values of relative printing positions in the first printing mode are specified. On the basis of the specified set values, set values of the relative printing positions of the nozzle rows in the second printing mode are determined.

REFERENCES:
patent: 4723129 (1988-02-01), Endo et al.
patent: 4740796 (1988-04-01), Endo et al.
patent: 6164745 (2000-12-01), Nagoshi et al.
patent: 6310637 (2001-10-01), Shimada et al.
patent: 6532026 (2003-03-01), Takahashi et al.
patent: 8-181379 (1996-07-01), None

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