Liquid container, cartridge including liquid container, printing apparatus using cartridge and liquid discharge printing apparatus
US6454400B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Aug 31, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17566
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid container which can precisely detects existence/absence of residual liquid at a low cost, a cartridge including the liquid container, and a printing apparatus using the cartridge. The lengthwise direction of a triangular prism provided on the bottom of the ink tank is along a direction of print medium conveyance in the printing apparatus, such that when an ink-jet head cartridge holding the ink tank is attached to the printing apparatus for performing printing, light emitted from an optical unit of the printing apparatus is precisely captured by the prism. Further, if two ink-jet head cartridges are mounted on the printing apparatus, the first and second ink-jet head cartridges are set in positions shifted from each other by a length shorter than the length in the lengthwise direction of the prism, such that the light emitted from the optical unit reaches the prisms provided in the ink tanks of the first and second ink-jet head cartridges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.