| Patent Number |
Title Of Patent |
Date Issued |
| 5737071 |
Method and apparatus for enhancing live-scan fingerprint reader images |
April 7, 1998 |
| A method and apparatus for improving the optical boundary between a person's fingerprint ridges and the surface platen of a live-scan-imaging apparatus includes providing an absorbent pad containing chemicals selected from the nonvolatile oils, oil amides, fatty alcohols and fatty ac |
| 5395444 |
Fingerprint ink dispenser |
March 7, 1995 |
| A fingerprint ink dispensing apparatus includes a ceramic disk positioned over an ink reservoir in the form, for example, of a felt pad. The ceramic disk has an average porosity of about 40% and an average pore size of about 5 microns. A colored pigment such as carbon black dispensed in |
| 4983415 |
Method of making permanent images on recording surface having a thermosensitive color-developing |
January 8, 1991 |
| An inkless method of recording an image of a desired object or symbol such as the print of a person's finger is described in which a recording surface is prepared by placing thereon a thermosensitive color-developing layer comprising a chromogenic dye such as a leuco dye, an organic acid |
| 4917987 |
Method of enhancing the resolution of a fingerprint image in a fingerprint recording system |
April 17, 1990 |
| A method for enhancing fingerprint images comprises the steps of applying a chemical compound to the fingers to be printed in which the compound contains a first constituent in the form of a conventional ink or inkless reagent. The first constituent is arranged by itself (i.e., ink) or i |
| 4182261 |
Credit card printer for fingerprints and solutions |
January 8, 1980 |
| The present invention comprises a credit card printer apparatus which includes inkless fingerprinting directly on a medium, such as a check or credit card slip. The printer can include a housing or bed having one or more replaceable cartridges with a pair of reservoir resilient foam cell |
| 4029012 |
Two-part inkless applicator for fingerprints |
June 14, 1977 |
| The present invention comprises an apparatus for inkless fingerprinting directly on a medium, such as a check. The apparatus can include a stamp housing having a replaceable cartridge with a pair of reservoir resilient foam cell pads having a semi-sealed surface. One of the pads will con |
