Charge erase device for copying or reproduction machines and printers
US4561761A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1984 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Jun 25, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An erase device for removing residual charges from the photoreceptor of a xerographic type reproduction machine or printer preparatory to recharging, comprising, an elongated rectangular light conducting bar or fiber adapted for disposition with one side thereof in preset spaced relation to the photoreceptor surface; a light impervious cover about the remaining sides of the fiber to prevent escape of light from the interior thereof; an illumination cavity at one end of the fiber; a lamp in the cavity in operative relationship within the fiber end, the lamp and cavity cooperating so that light is discharged by the lamp into the fiber for transmittal axially within the fiber toward the fiber opposite end, portions of the light in the interior of the fiber escaping through the fiber one side to impinge upon the photoreceptor surface and discharge the photoreceptor; the fiber one side being roughened so that the light exit area progressively increases in proportion to the distance from the lamp, the roughened portion enabling the discharge of light through the fiber one side and providing a proportionally increasing light emitting surface in accommodation of the fall off in light inten…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.