Liquid cartridge including pivotable plate member for optical detection
US11999171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2022 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Dec 3, 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 cartridge case defining a liquid storage chamber; a liquid supply portion provided at the cartridge case; a residual-amount detecting portion configured to change a state of incident light according to an amount of liquid stored in the liquid storage chamber; and a plate member. The residual-amount detecting portion includes an optical access portion accessible by light traveling in a left-right direction in an attached posture of the liquid cartridge. The plate member is positioned above the liquid storage chamber and frontward of the optical access portion in the attached posture. The plate member is pivotable between a first position and a second position about an axis extending in an up-down direction. In the attached posture of the liquid cartridge, the plate member extends in a front-rear direction at the first position, and extends in a direction crossing the front-rear direction at the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.