Inkjet print apparatus and inkjet print method
US8439468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2009 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Mar 5, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/0458
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a print apparatus for performing a print by a scan of a print head with heaters generating thermal energy for ejecting ink, a temperature of the print head is detected before the scan of the print head, and when the detected temperature exceeds a threshold temperature, the print head is controlled to wait. Information relating to the cumulative number of drives of the heater in the print head is acquired and, based upon this information, the threshold temperature is changed to a lower temperature as the cumulative number of the drives increases. An excessive temperature rise of the head is restricted and also a throughput reduction is reduced as much as possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.