Element substrate, liquid discharge head, and liquid discharge apparatus
US11975536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2022 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Sep 5, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/13
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An element substrate including a liquid discharge element, comprising a memory element capable of storing individual information of the element substrate by a write, the memory element being configured to change an impedance value by the write, a plurality of current supply elements capable of supplying a current to the memory element, and a determination unit configured to determine presence/absence of the write based on a voltage generated in the memory element by the current selectively supplied from the plurality of current supply elements, wherein the plurality of current supply elements constitute a part of a current mirror circuit and each supply the current in an amount according to a size ratio to the memory element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.