Print element substrate, printhead, and printing apparatus
US10500851B2 · kind B2 · utility
1Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Aug 31, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/13
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A print element substrate, comprises: a heater layer; a wiring layer that is connected to the heater layer and is for causing the heater layer to generate heat; an insulating layer arranged on the wiring layer; an anti-cavitation layer arranged on the insulating layer that is for protecting the insulating layer; and a switch that has a control terminal that is pulled-down to a ground, and causes the anti-cavitation layer and the ground to have an electrical connection when the control terminal is in a high-level state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.