Incremental printing of symbolic information – Ink jet – Controller
Patent
1993-07-08
1996-12-03
Barlow, Jr., John E.
Incremental printing of symbolic information
Ink jet
Controller
347 12, 347 17, 347 35, B41J 2938
Patent
active
055812813
ABSTRACT:
An ink-jet recording apparatus quickly completes a preparatory driving operation, and suppresses the wasteful consumption of the ink even if the apparatus is used in a cold environment after the apparatus has been held inoperative for a long time. The ink-jet recording apparatus comprises a first storage for storing a first driving pulse width data, a second storage for storing a second driving pulse width data, and a plurality of driving pulse generating units. A data selecting unit selects either the first driving pulse width data or the second driving pulse width data according to selection data set by a dot counter control unit, and a print pulse width setting unit and the driving pulse generating units generate ink-jet print head driving pulses. A print data processing unit produces print data for driving the nozzles of the ink-jet print head. The first and second driving pulse width data is used selectively and the print data is produced according to the time for which the ink-jet recording apparatus has been held inoperative and the temperature of the ink-jet print head.
REFERENCES:
patent: 4791435 (1988-12-01), Smith et al.
patent: 4970527 (1990-11-01), Gatten
patent: 5172134 (1992-12-01), Kishida et al.
Barlow Jr. John E.
Fuji 'Xerox Co., Ltd.
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