Sheet size detector and image processing apparatus
US10114323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2015 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Jan 26, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00734
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sheet size detector to detect a sheet size of a recording medium includes a movable member to move in a sheet size detection direction to a position corresponding to the sheet size, a magnetic flux detector including a coil disposed on a board face parallel to the sheet size detection direction to generate a magnetic flux in a direction perpendicular to the board face, and a target to oppose the board face and including a material to affect the magnetic flux. The target is different in configuration in the sheet size detection direction to change the magnetic flux in the direction perpendicular to the board face as the movable member moves. The magnetic flux detector outputs a signal corresponding to changes in magnetic flux in the direction perpendicular to the board face, and the signal corresponds to the position of the movable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.