公开(公告)号：US3676127A

公开(公告)日：1972-07-11

申请号：US3676127D

申请日：1970-01-23

Applicant: STALEY MFG CO A E

Inventor： PROTZMAN THOMAS F ,  MAGIDSON WILLIAM H

IPC: H01J9/227 ,  G03C5/00 ,  G03C5/04

CPC classification number: H01J9/2278

Abstract: IN THE PROCESS OF FORMING COLOR TELEVISION TUBE FACEPLATES THE IMPROVEMENT WHICH COMPRISES COATING A CATHODE RAY TUBE FACEPLATE WITH A SOLID LDIGHT-SENSITIVE LAYER CAPABLE OF DEVELOPING A RDP OF 0.2 TO 2.2; EXPOSING SAID LIGHT-SENSITIVE ORGANIC LAYER IN PREDETERMINED AREAS, CORRESPONDING TO THE PREDETERMINED CATHODOLUMINSCENT AREAS OF A FACEPLATE, TO ACTINIC RADIATION IN IMAGE RECEIVING MANNER TO ESTABLISH TO POTENTIAL RDP OF 0.2 TO 2.2; APPLYING TO SAID ORGANIC LAYER, FREE FLOWING POWDER PARTICLES COMPRISING AT LEAST ONE LIGHTABSORBING PIGMENT, SAID FREE FLOWING POWDER HAVING A DIAMETER ALONG AT LEAST ONE AXIS OF AT LEAST ABOUT 0.3 MICRON BUT LESS THAN 25 TIMES THE THICKNESS OF SAID ORGANIC LAYER; WHILE THE LAYER IS AT A TEMPERATURE BELOW THE MELTING POINT OF THE POWDER PARTICLES AND OF THE ORGANIC LAYER, PHYSICALLY EMBEDDING SAID POWDER PARTICLES AS A MONOLAYER IN THE STRATUM AT THE SURFACE OF SAID LIGHT-SENSITIVE LAYER TO YIELD AN IMAGE HAVING PORTIONS VARYING IN DENSITY IN PROPORTION TO THE EXPOSURE OF EACH PORTION; AND REMOVING NON-EMBEDDED PARTICLES FROM SAID ORGANIC LAYER TO DEVELOP A DISCRETE PATTERN OF POWDER PARTICLES COMPRISING AT LEAST ONE LIGHT-ABSORBING PIGMENT.