Liquid discharge head and liquid discharge method
US10336091B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Dec 29, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/21
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid discharge head includes: a substrate, where a recording element is disposed; and a discharge orifice forming member, where a discharge orifice, facing the recording element, and configured to discharge the liquid, is formed. The liquid discharge head has a pressure chamber, a first liquid channel configured to supply liquid to the pressure chamber, and a second liquid channel configured to recover liquid from the pressure chamber. The substrate has a liquid supply channel connected to the first liquid channel to supply liquid to the first liquid channel, and a liquid recovery channel connected to the second liquid channel, to recover liquid from the second liquid channel. Pressure at an inlet portion of the liquid supply channel is higher than pressure at an outlet portion of the liquid recovery channel, and a flow velocity of liquid within the pressure chamber is 3 to 140 mm/s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.