초록 ▼

The invention provides a movable cover for a finger receiving surface of an optical platen in a fingerprint imaging device. A heater incorporated into the platen cover applies controlled heat to the finger receiving surface when the cover is closed over the platen. Maintaining the finger receiving s

The invention provides a movable cover for a finger receiving surface of an optical platen in a fingerprint imaging device. A heater incorporated into the platen cover applies controlled heat to the finger receiving surface when the cover is closed over the platen. Maintaining the finger receiving surface within a selected temperature range that is at about skin temperature helps to inhibit condensation of moisture from a subject's fingers onto the finger receiving surface.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for imaging a finger, comprising:an optical platen having a finger receiving surface;an enclosure supporting the optical platen and containing an opto-electronic system for providing a signal indicative of surface characteristics of a finger placed on the fin

[ What is claimed is:] [1.] An apparatus for imaging a finger, comprising:an optical platen having a finger receiving surface;an enclosure supporting the optical platen and containing an opto-electronic system for providing a signal indicative of surface characteristics of a finger placed on the finger receiving surface;a platen cover coupled to the enclosure and movable between a first position covering the finger receiving surface and a second position exposing the finger receiving surface; andmeans for heating the platen cover such that the finger receiving surface is maintained within a selected temperature range when the platen cover is in the first position.