Rotor and polygon scanner that incorporates the rotor
US5969844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Jan 28, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rotor includes a hollow rotating shaft that is supported in a non-contact state by a radial self acting air bearing. The rotor also includes a contacting portion for positioning a rotating member in a rotating shaft direction that contacts with the rotating member from the rotating shaft direction. An engaging portion is included for positioning the rotating member in a direction perpendicular to the rotating shaft direction that engages with an inner surface of the rotating member. A holding portion is formed either in plural portions in a peripheral direction or as a single integrated portion that extends in the peripheral direction near the rotating member that is positioned by the contacting portion and the engaging portion, and that presses the rotating member from an opposite side of the contacting portion by deformation of one portion or a whole portion of the holding portion, and positions and holds the rotating member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.