Image forming apparatus and method for controlling image forming apparatus
US11446944B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Aug 5, 2020 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jan 29, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An image forming apparatus includes a sheet feeder, an image former, an ultrasonic sensor, and a controller. The image former forms an image on a sheet conveyed. The ultrasonic sensor is used to detect the sheet conveyed. The ultrasonic sensor includes a transmitter circuit which sends ultrasonic waves and a receiver circuit which receives the ultrasonic waves. The ultrasonic sensor outputs an output voltage in accordance with a strength of the ultrasonic waves received by the receiver circuit. The controller recognizes a current air pressure based on a magnitude of the output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.