Inkjet printing apparatus and printing system
US6672703B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Mar 25, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1652
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an inkjet printer having device for executing recovery processing by ink suction to make the ink ejection state of a printing head favorable, increase in ink consumption due to recovery processing is suppressed properly while maintaining ejection quality. When it is judged that recovery processing is necessary due to exchange of a head or an ink tank, this information is stored in a RAM and an EEPROM. Only before execution of print, recovery processing is executed when it is determined that the recovery processing is necessary based on the information. At the execution, the information is cleared to a recovery unnecessary state. As the information is held in the EEPROM, necessity of the recovery processing after power supply ON is determined based on a recovery processing execution state before the power supply was turned off. Therefore, suction recovery processing is executed without waste at a proper timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.