Liquid supply unit and liquid injection device
US10618298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2019 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Mar 25, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/13
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid supply unit includes a first chamber, a second chamber, a wall portion, an opening/closing member, a flexible film member and a transmitting member. The wall portion includes a communication opening allowing communication between the first chamber and the second chamber. The opening/closing member changes a posture between a closing posture for closing the communication opening from the second chamber side and an opening posture. The flexible film member is displaced based on a pressure change of the second chamber. The transmitting member transmits a displacement force to the opening/closing member to be the opening posture when the second chamber is set to a negative pressure exceeding a predetermined threshold value, and transmits the displacement force to the opening/closing member to be the closing posture according to a displacement of the flexible film member when the second chamber is pressurized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.