Recording apparatus and reciprocating record position...

Details Recording apparatus and reciprocating record position... Recording apparatus and reciprocating record position...

2006-12-19

2006-12-19

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S009000, C347S014000

Reexamination Certificate

active

07150511

ABSTRACT:
A recording apparatus has a bidirectional recording section, a check pattern recording section that forms check patterns different in record position of backward recording relative to forward recording when each check pattern having vertical ruled lines are recorded, a density data detection section that acquires density data of each check pattern, a density amplitude detection section that extracts partial in each partial segment from the density data of each check pattern, detects minimum and maximum values of each partial data, and detects a difference between the minimum and maximum values as a density amplitude value, an amplitude difference detection section that detects a difference between the density amplitude values of adjacent partial segments as an amplitude difference value in each check pattern, and a best pattern determination section that determines a best check pattern in which the variation amount of the density data is the smallest in each check pattern.

REFERENCES:
patent: 4449052 (1984-05-01), Krieg
patent: 6409301 (2002-06-01), Takata et al.
patent: 6431679 (2002-08-01), Li et al.
patent: 6454390 (2002-09-01), Takahashi et al.
patent: A 2000-037937 (2000-02-01), None

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