Inkjet printhead and a method of inkjet printing
US7837288B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2005 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Aug 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/102
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.