Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-09-26
2006-09-26
Philogene, Haissa (Department: 2828)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S021000, C347S026000, C347S057000, C347S065000
Reexamination Certificate
active
07111920
ABSTRACT:
A fluid jet head with driving circuit of a heater set. A first and a second primary transistor are coupled to a first and a second heater. When the first primary transistor is turned on under control of a first control voltage and a first current is generated flowing through the first heater, the first primary transistor, and the first current path, then the first primary transistor has a first primary equivalent resistance corresponding to the first control voltage. When the second primary transistor is turned on under control of a second control voltage, and a second current is generated flowing through the second heater, the second primary transistor, and a second current path, then the second primary transistor has a second primary equivalent resistance corresponding to the second control voltage. Therefore, the thermal energy generated by the first heater is substantially equal to that generated by the second heater.
REFERENCES:
patent: 5563634 (1996-10-01), Fujii et al.
patent: 5604519 (1997-02-01), Keefe et al.
patent: 5734391 (1998-03-01), Tanaka et al.
patent: 6412917 (2002-07-01), Torgerson et al.
Huang Tsung-Wei
Lee Kun-Ming
Benq Corporation
Philogene Haissa
Thomas Kayden Horstemeyer & Risley
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