Compensating for drift and sensor proximity in a scanning...

Details Compensating for drift and sensor proximity in a scanning... Compensating for drift and sensor proximity in a scanning...

2006-04-04

2006-04-04

Williams, Kimberly (Department: 2626)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C358S504000

Reexamination Certificate

active

07023581

ABSTRACT:
To compensate for color-calibration sensor drift, a measurement of bare-print-medium tonal value is taken in immediate time juxtaposition to each color test pattern; measured bare-medium tone is then used to correct color-patch readings. A line sensor or the like, on the scanning printhead carriage, is used for the reading. Preferably two such readings are taken, one at each end of each test pattern; ideally separate scans of the bare medium are taken without any test-pattern patch to develop longterm and short-term drift profiles, for refining the corrections. To compensate for calibration error due to runout in the carriage track—particularly for wide-bed printers—sensor response to bare medium is used to represent variations in carriage-to-medium spacing along the track; these variations are corrected in later sensor use.

REFERENCES:
patent: 5185673 (1993-02-01), Sobol
patent: 5353052 (1994-10-01), Suzuki et al.
patent: 5809213 (1998-09-01), Bhattacharjya
patent: 6167150 (2000-12-01), Michael et al.
patent: 6196652 (2001-03-01), Subirada et al.
patent: 6345876 (2002-02-01), Tanaka et al.
patent: 6603574 (2003-08-01), Ramirez et al.
patent: 6690485 (2004-02-01), Borrell et al.
patent: 6788431 (2004-09-01), Yamaguchi
patent: 6799823 (2004-10-01), Miquel et al.
patent: 2003/0016263 (2003-01-01), Takahashi et al.

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