Preliminary ejection method and ink jet printing apparatus
US7287825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2005 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Apr 7, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16526
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an ink jet printer in which preliminary ejection is performed onto printing paper, unnecessary ink consumption due to the preliminary ejection is suppressed. More specifically, the paper preliminary ejection is designed to be performed only for a printing head of cyan ink. For this cyan ink the longest duration of its non-ejection state, in which the printer can attain high printing quality when restarting printing after continuation of the non-ejection state in the case of not performing the paper preliminary ejection, is shorter than 1.6 seconds of the duration which is necessary for the reciprocal printing. This eliminates the paper preliminary ejection for the printing heads of the other colors of ink, thereby avoiding unnecessary ink consumption due to the paper preliminary ejection performed uniformly for every color of ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.