Optical scanning and image forming apparatus with a free-sliding unit for thermal expansion
US8508808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2009 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jul 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanning apparatus has: a deflection unit that scans beams emitted from a plurality of laser light sources; an imaging unit having one or more optical elements for imaging beams scanned by the deflection unit; and a supporting unit having a higher rigidity than a rigidity of the imaging unit. The supporting unit has a pair of receiving members that support the imaging unit, in a sub-scanning direction, near both ends, as seen in a main scanning direction, of the imaging unit. The optical scanning apparatus also has; a bend-adjustment unit that corrects bend. The bend-adjustment unit is disposed on the supporting unit at a plurality of positions along the main scanning direction. The optical scanning apparatus further has a free-sliding unit for securing free expansion of the imaging unit due to temperature changes thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.