Inkjet printing apparatus, with plural printheads and control circuit
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United States of America Patent
Stats
-
Jun 14, 2005
Grant Date -
Feb 21, 2002
app pub date -
Jul 17, 2001
filing date -
Jul 19, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A shift register stores printing data in synchronism with a transfer clock. A latch circuit temporarily latches data having a predetermined number of bits to the shift register in response to a data latch signal. A shift register stores block data in synchronism with a transfer clock. A latch circuit temporarily latches data having the predetermined number of bits to the shift register in response to a block data latch signal. Each AND gate receives a block selection signal from a printing block selection unit, a printing data selection signal corresponding to a printing dot from a printing data supply unit, and an energization time selection signal. An output from the AND gate turns on/off a switching transistor. As a result, a heater is heated to discharge ink droplets.
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Cited Art Landscape
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