Printing head substrate, ink jet printing head and ink jet printing apparatus with substrate temperature detecting element
US8070263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2009 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Apr 8, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17553
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There are provided a printing head substrate, an ink jet printing head and an ink jet printing apparatus, which accurately detect a temperature state in the central part of a heater array on the substrate and restrict an area of the substrate to a minimum. A printing head substrate has a plurality of heating elements, a plurality of ink supply openings, a logic circuit for driving the heating elements; a substrate temperature detecting element for detecting a temperature of the printing head substrate, and input and output pads for carrying out reception and supply of a signal between a printing apparatus, and the logic circuit and the substrate temperature detecting element, wherein a beam integral with the substrate is provided between the plurality of ink supply openings, and the substrate temperature detecting element is arranged on the beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.