Recording medium determination apparatus and image forming apparatus
US8774653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2009 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Oct 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00742
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.