Printing apparatus and test pattern printing method
US6942313B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2003 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Oct 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a printing apparatus which prints by scanning a printhead having an array of printing elements on a printing medium in a direction crossing to a direction of the array, when a test pattern for verifying the printing characteristic of each printing element is to be printed, adjacent printing elements are driven in parallel to print a straight pattern with a predetermined length in the scanning direction. Printing of a straight pattern is executed a plurality of number of times so as to use all the printing elements for printing at least one straight pattern. In the printed test pattern, variations between the printing characteristics of printing elements that do not pose any problem in actual printing do not stand out. A printing element which degrades the image quality upon actual printing can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.