Printing apparatus
US8251479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2008 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Oct 17, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention aims to obtain preferable correction values to correct the conveying error of a conveying roller in accordance with the size of a printing medium, even when the conveying error caused by the eccentricity of the roller varies from a point to another in the longitudinal direction of a roller, depending on the amount and the state of eccentricity of the roller. To achieve this object, correction values are acquired using the whole part of or only a part of plural test patterns formed in the longitudinal direction of the roller. The correction values thus acquired correspond to the respective zones where the test patterns are formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.