Liquid discharge head and recording apparatus provided with the liquid discharge head
US6834940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Apr 6, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid discharging head for discharging liquid droplets utilizing generated bubbles by heating liquid to bubble comprises discharge port for discharging liquid droplets, bubbling chamber communicated with the discharge port for filling liquid; heat-generating member arranged in the bubbling chamber, being supported in a state of having gaps on both sides to the inner wall faces of the bubbling chamber; and supporting portion for supporting the heat-generating member. Then, after the generation of bubble in liquid by the heat-generating member, the sufrace temperature of the heat-generating member is made lower than the bubbling temperature at the time of bubble extinction by the heat radiation from the heat-generating member to the supporting portion side. In this way, it is made possible to prevent liquid from being heated again to generate bubble subsequent to the bubble extinction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.