Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1988-12-15
1991-04-30
Reynolds, Bruce A.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346 76PH, G01D 1510
Patent
active
050122584
ABSTRACT:
A device for driving a thermal print head having a plurality of heat-producing elements arranged in the form of a single array for use in a thermosensitive or thermal transfer recording apparatus is provided. The drive device includes a void data counter for counting void data in the data of an image signal for each of the plurality of heat-producing elements and an adjusting unit for adjusting the level of a preheat energy to be supplied to each of the plurality of heat-producing elements in accordance with the void data count for the corresponding heat-producing element.
REFERENCES:
patent: 4454516 (1984-06-01), Moriguchi et al.
patent: 4560993 (1985-12-01), Hakoyama
Preston Gerald E.
Reynolds Bruce A.
Ricoh & Company, Ltd.
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