Method and apparatus for selecting ink ejection nozzles in...

Details Method and apparatus for selecting ink ejection nozzles in... Method and apparatus for selecting ink ejection nozzles in...

2007-06-21

2008-11-18

Nguyen, Thinh H (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S017000

Reexamination Certificate

active

07452044

ABSTRACT:
A method is described for controlling a micro-fluid ejection head that includes first and second heater chips disposed in a staggered overlapping arrangement, where a number of the nozzles of the first heater chip are substantially aligned with a corresponding number of the nozzles of the second heater chip in an overlapping region that includes N number of sub-regions. In one embodiment, the method includes: (a) determining a difference between the temperatures of the first and second heater chips; (b) determining a first percentage of nozzles in each sub-region of the first heater chip to be used in printing a first portion of the printed image; (c) determining a second percentage of nozzles in each sub-region of the second heater chip to be used in printing a second portion of the printed image; and (d) printing the first and second portions of the printed image using the first percentage of nozzles in each sub-region of the first heater chip and the second percentage of nozzles in each sub-region of the second heater chip. The first and second percentages of nozzles may be determined based on the difference in temperature between the first and second heater chips.

REFERENCES:
patent: 5946007 (1999-08-01), Otsuka et al.
patent: 6310636 (2001-10-01), Tajika et al.

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