Fingerprint input device equipped with a cleaner for finger-impressing surface
US4701959A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/33
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fingerprint input device for reading images of a fingerprint from a surface of a finger includes a base plate, an optical scanner, a rotary member, a first cleaning member, a switch, a detector and a control member. The optical member scans the finger-impressing surface to read the fingerprint. The rotary member has a first portion and a second, window portion. The first cleaning member is provided at the bottom of the first portion of the rotary member for wiping the finger-impressing surface by rotation thereof. The switch means is operated when the fingerprint input device is to be utilized, and the detector is operative for detecting release of the finger from the finger-impressing surface. The controller is responsive to outputs of the switch and the detector for controlling rotation of the rotary member to both expose the finger-impressing surface and to clean and cover same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.