Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2004-11-08
2008-11-11
Luu, Matthew (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S012000, C347S005000, C347S054000
Reexamination Certificate
active
07448730
ABSTRACT:
A printhead includes a plurality of switching elements which are arranged in correspondence with respective printing elements and control energization to the respective printing elements, a reference voltage circuit which generates a reference voltage, a current generation circuit which generates a reference current (Iref) on the basis of a reference voltage (Vref) generated by the reference voltage circuit, and a plurality of constant current sources which supply, in accordance with the reference current (Iref) generated by the current generation circuit, constant currents via the switching elements arranged in correspondence with the respective printing elements.
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English-language translation of Japanese Office Action dated May 15, 2006 issued in Japanese Patent Application No. 2002-348724 (corresponding to U.S. Appl. No. 11/134,416).
U.S. Appl. No. 11/449,702, filed Jun. 9, 2006, Ryo Kasai, Tatsuo Furukawa, Masataka Sakurai, Nobuyuki Hirayama.
English-language translation of Korean Office Action issued Sep. 15, 2006 in related Korean patent application No. 2005-7009612.
English-language translation of Japanese Office Action issued Sep. 25, 2006 in related Japanese patent application No. 2002-348724.
English-language translation of Japanese Office Action issued Sep. 25, 2006 in related Japanese patent application No. 2002-348725.
Korean Office Action issued Sep. 15, 2006 in related Korean patent application No. 2005-7009613 and English translation.
Korean Office Action Issued Jun. 18, 2007 In related Korean patent application No. 2005-7009613, and English-language translation.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Legesse Henok
Luu Matthew
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