Image reading apparatus and method of calculating medium inclination in image reading apparatus
US11228690B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Aug 27, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00774
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus has: electrodes that come into contact with a medium during transport; charge detection circuits, each of which corresponds to one of the electrodes; a reader, and a controller. The controller executes inclination inference processing for calculating the inclination of the medium with respect to a transport path as an inferred inclination value according to a signal from each charge detection circuit, inclination detection processing for deriving the inclination of the medium with respect to the transport path as a detected inclination value according to the result of reading by the reader, and correction value deriving processing for storing a correction value based on the difference between the detected inclination value and the inferred inclination value in a storage section. In inclination inference processing with the correction value stored in the storage section, the inferred inclination value is calculated in consideration of the correction value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.