Image forming apparatus
US11740571B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2021 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Mar 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus including a developing unit with a developing container configured to contain a developer including a toner and a carrier, and configured to develop the electrostatic latent image by using the developer in the developing container. A sensor, which is provided on an outer wall of the developing container, is configured to output a pulse signal that changes in frequency depending on a toner concentration of the developer in the developing container. A controller is provided to control supply of the toner to the developing unit by detecting the toner concentration based on the time required for the pulse number to reach a predetermined count number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.