Ink tank, ink tank-integrated head cartridge having the tank and ink head constructed integrally, and ink jet printing apparatus having the ink tank or head cartridge
US5652610A · kind A · utility
41Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1994 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | May 12, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17566
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink absorbing member is inserted in an ink tank housing which at least partly has a transparent portion. Used as this ink absorbing member is one having a reflection density after ink removal which is close to the reflection density of a melamine foam before ink injection. The amount of ink remaining in a cartridge of such a construction can be detected, for example, by a separate line sensor. The results of detection by the line sensor can be displayed by a remaining ink amount indicator provided on a control panel of the printing apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.