Thermal control mechanism for multiple print bar system

Details Thermal control mechanism for multiple print bar system Thermal control mechanism for multiple print bar system

1991-12-30

1993-03-02

Fuller, Benjamin R.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346107R, 358302, 165 61, 400719, G01D 900, G01D 942, H04N 123

Patent

active

051913534

ABSTRACT:
The temperature of LED print bars utilized in a printing system are maintained within a specified differential range, with respect to each other. Each print bar has an associated heating and cooling element. The temperature of each print bar is monitored and compared during operation. When a temperature differential greater than a preset tolerance range is detected, either the hotter operating print bar is cooled or the lower operating print bar is heated, or a combination of cooling and heating is applied to the out-of-tolerance print bars. The cooling and/or heating of the print bars is continued until the temperature differential is reduced so as to be within the preselected or predefined range.

REFERENCES:
patent: 4601328 (1986-07-01), Tasaka et al.
patent: 4660059 (1987-04-01), O'Brien
patent: 4679615 (1987-07-01), Livne
patent: 4704620 (1987-11-01), Ichihashi et al.
patent: 4865123 (1989-09-01), Kawashima et al.
patent: 4884079 (1989-11-01), Inoue et al.

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