Ink filling method and apparatus for ink cartridge
US5790157A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1994 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Aug 30, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17506
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink filling method for filling an ink cartridge with ink to be supplied to a recording head for ejecting ink includes providing an ink cartridge having a negative pressure producing material accommodating portion and an ink accommodating portion, the negative pressure producing material accommodating portion accommodating a negative pressure producing material and being provided with an air vent, and the ink accommodating portion being substantially hermetically sealed except for fluid communication with the negative pressure producing material accommodating portion, and accommodating directly the ink to be supplied to the recording head, the ink cartridge further includes a partition wall between the negative pressure producing material accommodating portion and the ink accommodating portion, the partition wall being provided with a gap for permitting formation of meniscus of the ink; and directly injecting the ink into the ink accommodating portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.