Liquid cartridge having plate member movable between first position and second position
US11993087B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2022 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Oct 26, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/17576
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid cartridge includes a case, a liquid supplying portion, a circuit board, a plate member, and a residual-amount detecting portion. The plate member is positioned rearward and above electrodes of the circuit board in an attached posture. The residual-amount detecting portion includes an optical access portion configured to receive light traveling in a left-right direction. The plate member is movable between a first position and a second position. At the first position, a portion of the plate member is positioned frontward of the optical access portion and upward of the electrode group. At the second position, a front end of the plate member is positioned closer to the residual-amount detecting portion than at the first position. The plate member at the first position and the residual-amount detecting portion define therebetween in the front-rear direction a light transmissive region whose light transmittance is higher than the plate member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.