Ink drop volume variance compensation for inkjet printing

Details Ink drop volume variance compensation for inkjet printing Ink drop volume variance compensation for inkjet printing

1997-11-25

2000-03-28

Grimley, Arthur T.

Incremental printing of symbolic information

Ink jet

Controller

B41J 2205

Patent

active

060422114

ABSTRACT:
A printing technique is disclosed which takes into account the actual ink drop volumes of the print cartridges used in an inkjet printer. In one embodiment, each of the print cartridges is tested by the manufacturer, and its actual ink drop volume is determined. This actual ink drop volume, or the variance from the nominal ink drop volume, is encoded on the print cartridge itself using any number of techniques. The host computer, which converts RGB tone values to CMYK ink tone values to be printed, reads the information regarding the ink drop volume and adjusts the CMYK tone values as necessary to compensate for the variance in the ink drop volumes. Accordingly, the printer and host computer will adjust the number of CMYK ink drops printed for a particular pixel position on the medium based upon the actual ink drop volumes for the color print cartridges used in the printer.

REFERENCES:
patent: 4499479 (1985-02-01), Lee et al.
patent: 5847724 (1998-12-01), Mantell

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