Inkjet printhead and a method of inkjet printing

Details Inkjet printhead and a method of inkjet printing Inkjet printhead and a method of inkjet printing

2005-12-23

2010-11-23

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

07837288

ABSTRACT:
An inkjet printhead includes a plurality of firing cells, each adapted to generate an ink droplet. The firing cells are arranged to form a plurality of matrices. A control circuit selectively activates the firing cells. The control circuit includes a first dynamic memory register for storing main printing data defining which firing cells have to be activated in a first printing operation. A second dynamic memory register stores auxiliary printing data defining which firing cells have to be activated in a second printing operation. A processing unit is operatively associated with the first and second memory registers to transfer the auxiliary printing data into the first memory register, thereby defining which firing cells have to be activated in the second printing operation. A firing unit sends a single firing signal common to all the matrices for each printing operation. Also disclosed is a method of inkjet printing.

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International Search Report issued in PCT/EP2005/013992 dated Oct. 6, 2006.
Written Opinion issued in PCT/EP2005/013992 dated Oct. 6, 2006.

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