Image recording apparatus capable of correcting density unevenness
US5343231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Jan 15, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/365
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An image forming apparatus is provided by which a certain test pattern is recorded with a recording head having a plurality of recording elements, and the degree of density unevenness of each recording element of the recording head is calculated by reading the test pattern. The temperature of the recording head is detected and the degree of density unevenness calculated is corrected according to the detected temperature, thereby calculating correction data with respect to each recording element. At the time of image recording, image data input for each recording element is changed based on the correction data to correct any unevenness in density of the recorded image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.