Printer
US7562870B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Apr 8, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/425
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printer for feeding the sheet intermittently with high precision while preventing a decrease in the print rate is provided. A printer has a feed-in roller for feeding a sheet into a printing region, a feed-out roller for feeding the sheet out of the printing region, a motor for rotating the feed-in roller and the feed-out roller, and a controller for controlling the motor. The controller controls the motor so as to start intermittent sheet feed with a first line-feed-time that specifies a time period for one line feed and vary the first line-feed-time to a second line-feed-time that is longer than the first line-feed-time before the sheet is fed by only the feed-out roller. The sheet is fed intermittently with a shorter line-feed-time while being fed by the feed-in roller which is precisely controlled. On the other hand, the sheet is fed intermittently with a longer line-feed-time while being fed by the feed-out roller which is not controlled as precisely as the feed-in roller. Hereby, the printer can feed the sheet intermittently with high precision while preventing a decrease in the print rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.