Exposure head and image forming apparatus
US11199788B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2020 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Sep 18, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0409
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure head includes a light emitter, a plurality of switches, a transmission line, and a plurality of delay circuits. In the light emitter, a plurality of light emitting elements are arranged in a first direction. The switches are provided respectively corresponding to the light emitting elements. The switches are configured to perform switching such that, when a drive signal is input, a drive current flows through a light emitting element corresponding to the drive signal. The transmission line is configured to supply a drive signal to the switches. The delay circuits are provided respectively corresponding to the switches. The delay circuits are configured to delay the drive signal that is supplied to the switches through the transmission line in order from a first end side to a second end side of the light emitting elements arranged in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.