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Title:
PRINTING APPARATUS AND APPARATUS AND METHOD FOR GENERATING DRIVING WAVEFORM
Document Type and Number:
Japanese Patent JP3767270
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To prevent a driving waveform from suddenly changing due to cumulative errors by digital/analog converting specific upper bits among the cumulative result of a plurality of accumulated bits and outputting as an analog signal.
SOLUTION: Driving waveform data fed from a control part 45 is stored in a memory 60. Driving waveform data read out by a first latch 62 from the memory 60 is temporarily held. Outputs of a first latch 62 and a second latch 66 are added by an adder 66, and the output of the second latch 66 is converted to an analog signal by a digital/analog converter 70. The converted analog signal is amplified by a voltage-amplifying part 72 to a voltage whereby a piezoelectric element drives. A current corresponding to the amplified voltage signal is supplied by a current-amplifying part 74.


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Inventors:
深野 孝和
田村 登
朝内 昇
西原 雄一
Application Number:
JP1999000259816
Publication Date:
April 19, 2006
Filing Date:
September 14, 1999
Export Citation:
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Assignee:
セイコーエプソン株式会社
International Classes:
B41J2/045; B41J2/485; B41J2/055; B41J2/51; H03K4/02; (IPC1-7): B41J2/045; B41J2/055; B41J2/51; B41J2/485
Domestic Patent References:
JP11020203A
JP10329313A
JP58218948A
Attorney, Agent or Firm:
特許業務法人明成国際特許事務所