Ink cartridge and ink jet recording apparatus
US7080898B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2004 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Jan 22, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17509
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink cartridge having an ink storing portion which stores an ink to be supplied to a recording head, and which includes a flexible sheet and an outlet portion through which the ink is supplied to the recording head. A liquid chamber accommodates a liquid which contacts under a level thereof, the flexible sheet of the ink storing portion. A gas supplying portion supplies, as the ink is supplied from the ink storing portion to the recording head and accordingly a volume of the ink storing portion is decreased, a gas to the liquid chamber, so that the gas is accumulated above the liquid accommodated by the liquid chamber. A window is provided to detect an interface between the liquid accommodated by the liquid chamber and the gas accumulated above the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.