Abstract:
THE PROCESS FOR ETCHING AN ETCHABLE LAYER WITHOUT A RESIST COMPRISING THE STEPS OF EXPOSING AN ETCHABLE LAYER BEARING A LIGHT-SENSITIVE LAYER CAPABLE OF RECEIVING A POWDER IN IMAGE-WISE CONFIGURATION TO ACTINIC RADIATION TO FORM A LATENT POWDER-RECEPTIVE IMAGE; DEVELOPING SAID LATENT IMAGE WITH SUPERFICIALLY DRY ETCHANT PARTICLES TO FORM A LAYER OF ETCHANT PARTICLES IN IMAGE-WISE CONFIGURATION; REMOVING ETCHANT PARTICLES, FROM THE NON-IMAGE AREAS OF SAID LIGHT-SENSITIVE LAYER, AND CARRYING OUT SAID ETCHING REACTION IN A PREDETERMINED CONFIGURATION CONFORMING TO THE IMAGE-WISE CONFIGURATION OF THE SUPERIFICALLY DRY ETCHANT PARTICLES.
Abstract:
PROCESS FOR CARRYING OUT A PREDETERMINED CHEMICAL REACTION IN IMAGE-WISE CONFIGURATION WHICH COMPRISES BRINGING INTO CONTACT (1) A FIRST LAYER COMPRISING A COMPOSITION CAPABLE OF UNDERGOING A PREDETERMINED CHEMICAL REACTION WITH A SECOND LAYER BEARING A LAYER OF POWDER PARICLES IN IMAGE-WISE CONFIGURATION, SAID POWDER PARTICLES COMPRISING A COMPONENT WHICH, IN MINOR PROPORTION, EXERTS A MAJOR INFLUENCE ON THE COURSE OF SAID PREDETERMINED CHEMICAL REACTION AND (2) CARRYING OUT SAID PREDETERMINED CHEMICAL REACTION IN A PREDETERMINED CONFIGURATION CONFORMING TO THE IMAGE-WISE CONFIGURATION OF THE POWDER PARTICLES OF SAID SECOND LAYER.
Abstract:
PROCESS FOR CARRYING OUT A PREDETERMINED CHEMICAL REACTION IN IMAGWISE CONFIGURATION WHICH COMPRISES EXPOSING AN ELEMENT COMPRISING (A) A FIRST SOLID LAYER COMPRISING A COMPOSITION CAPABLE OF UNDERGOING A PREDETERMINED CHEMICAL REACTION BEARING (B) A SECOND LAYER COMPRISING A COMPOSITION CAPABLE OF RECEIVING A POWDER IN IMAGE-WISE CONFIGURATION TO ACTINIC RADIATION TO FORM A LATENT POWDER-RECEPTICE IMAGE WITHOUT INITIALTING SAID PREDETERMINED CHEMICAL REACTION; DEVELOPING SAID LATENT IMAGE WITH POWDER PARTICELS COMPRISING A COMPLEMENTARY REAGENT WHICH, IN MINOR PROPORTION, EXERTS A MAJOR INFLUENCE ON THE COURSE OF SAID PREDETERMINED CHEMICAL REACTION TO FORM A LAYER OF POWDER PARTICLES IN IMAGE-WISE CONFIGURATION; BRINGING SAID COMPLEMENTARY REGENT INTO REACTIVE CONTACT WITH SAID COMPOSITION CAPABLE OF UNDERGOING SAID PREDETERMINED CHEMICAL REACTION; AND CARRYING OUT SAID PREDETERMINED CHEMICAL REACTION IN A PREDETERMINED CONFIGURATION CONFORMING TO THE IMAGE-WISE CONFIGURATION OF THE POWDER PARTICLES OF SAID SECOND LAYER.
Abstract:
A NON-CORROSIVE, STABLE POLYVINYLIDENE CHLORIDE LATEX IS PRODUCED BY ADDING CORROSION INHIBITING AMOUNTS OF A PEROXIDE DESTROYING ENZYME SUCH AS A PEROXIDASE OR CATALASE TO A POLYVINYLIDENE CHLORIDE LATEX CONTAINING RESIDUAL PEROXIDES. THE STABILIZED COMPOSITION HAS PARTICULAR UTILITY AS A COATING FOR CELLULOSIC SUBSTRATES.
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.