Patent ID: 11900712
Assignee: INTEGRATED BIOMETRICS, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A system for capturing a biometric object print image, comprising:
an electrophoretic display comprising:
a free surface for receiving a target biometric object;
an electrode layer;
an electro-optical material layer disposed in contact with the electrode layer, between the free surface and the electrode layer, the electro-optical material layer comprising micro-capsules comprising a negatively charged dark-colored pigment suspended in transparent fluid;

a contact electrode positioned proximate the electrophoretic display to operably contact the target biometric object subjected to print imaging; and
a direct current (DC) electrical bias source, the DC electrical bias source electrically coupled with the contact electrode to provide positive potential, and the DC electrical bias source electrically coupled with the electrode layer to provide negative potential;
wherein bringing the biometric object in contact with the contact electrode and the free surface completes an electrical circuit between the contact electrode and the transparent electrode resulting in the dark-colored pigment of the microcapsules becoming visible at the free surface of the electrophoretic display merely at a location of contact of the biometric object with the surface of the electrophoretic display, thereby generating an print image at the free surface of a print of a portion of the biometric object that contacts the electrophoretic display.