Print element substrate, printhead, and printing apparatus
US8070262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2009 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Jul 17, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/0455
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention is directed to allow efficiently transferring data to each print element (heater) and efficiently laying out circuits in an element substrate including plural heater arrays in which different numbers of heaters are arranged. This substrate includes: a first array having a relatively large number of heaters; and a second array which is equal in length to the first array and has a relatively small number of heaters. These arrays are juxtaposed. The substrate further includes plural shift registers equal in number to the heater arrays of the substrate. The shift registers include a shift register which holds some data for driving the heaters of the first heater array, and data for driving the heaters of the second heater array. The shift registers further include a shift register which holds data other than some data for driving the heaters of the first heater array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.