Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2006-06-30
2008-12-16
Nguyen, Thinh H (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S019000, C347S035000
Reexamination Certificate
active
07465006
ABSTRACT:
On performing a predetermined printing operation, whether or not, among a plurality of printing elements, only a part of the printing elements are applied is detected. If it is judged that only the part of the printing elements are used, a judgment is made whether or not the preliminary discharge operation is performed based on the number of discharges for the part of the printing elements, and if it is not judged that only the part of the printing elements are used, a judgment is made whether or not the preliminary discharge operation is performed based on the number of discharges for all of the printing elements of the printing head. This eliminates an unnecessary preliminary discharge for non-printing elements even in a printing operation mode in which only a part of the printing elements are applied.
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Edamura Tetsuya
Maru Akiko
Murayama Yoshiaki
Takahashi Kiichiro
Teshigawara Minoru
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Nguyen Thinh H
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