OPTICAL SCANNER TO REDUCE DETERIORATION OF BEAM SPOT
| Register | WIPO Patent |
|---|---|
| Application Number | US2022016797 |
| Publication Number | 2023/003598 |
| Status | In Force |
| Filing Date | 2022-02-17 |
| Publication Date | 2023-01-26 |
| Owner | HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (USA) |
| Inventor | Ku, Jongwuk |
Abstract
An optical scanner includes a light source unit, a deflector comprising at least three first coupling portions; an imaging optical system to form an image by scanning deflected light from the deflector on an exposure object; and a frame comprising at least three second coupling portions respectively corresponding to the at least three first coupling portions, wherein an assembly reference line is a shorter line among a first line between two second coupling portions relatively close to a rotational axis of the deflector from among the at least three second coupling portions and a second line perpendicular to a line from another second coupling portion to the first line, and positions of the at least three second coupling portions are such that the assembly reference line faces a direction in which an error of a diameter of beam spots formed on the exposure object is within a reference error.IPC Classes ?
- G02B 26/10 - Scanning systems
- G03G 15/04 - Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material