Print control based on print head temperature

Details Print control based on print head temperature Print control based on print head temperature

2005-10-04

2005-10-04

Nguyen, Thinh (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

06951378

ABSTRACT:
A method and apparatus for cooling a print head of an ink jet printer before capping includes the steps of determining an ambient temperature, determining a print head temperature, and waiting a predetermined time after receipt of the last print data for the print job, ejecting a predetermined number of ink droplets from nozzles of the print head at a frequency lower than a frequency used for printing, determining a drop in print head temperature caused by ejecting the predetermined number of ink droplets, and repeating the steps of waiting a predetermined time and ejecting a predetermined number of ink droplets until the print head temperature falls below a threshold.

REFERENCES:
patent: 4664542 (1987-05-01), Tsugita
patent: 5097276 (1992-03-01), Midorikawa
patent: 5406317 (1995-04-01), Shimamura et al.
patent: 5543826 (1996-08-01), Kuronuma et al.
patent: 5552811 (1996-09-01), Kurata et al.
patent: 5625384 (1997-04-01), Numata et al.
patent: 5729257 (1998-03-01), Sekiya et al.

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