Electrooptical light shutter device and printer apparatus using same
US4887104A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1987 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Nov 16, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/465
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An electrooptical light shutter device for use in an optical printer apparatus, comprising a number of shutter elements arrange in the form of at least one linear array, each of the shutter elements having an electrooptical effect, a polarizer disposed on a light-incoming side of the array of the shutter elements, and an analyzer disposed on a light-outgoing side of the array of the shutter elements, wherein the shutter elements have respective shutter windows through which light is to be passed selectively and the shutter windows are arranged to be overlapped by one another in a direction substantially perpendicular to the direction in which the shutter elements are arranged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.