The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2010
Filed:
Dec. 23, 2005
Walter Cerutti, Arnad, IT;
Walter Cerutti, Arnad, IT;
Telecom Italia S.p.A., Milan, IT;
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.