Production of positive image by developing an imagewise exposed semiconductor element with oxidizing and reducing agents

Abstract

Abstract IN A PROCESS FOR RECORDING AN IMAGE PATTERN OF ACTIVALTING RADIATION COMPRISING EXPOSING TO AN IMAGE PATTERN OF ACTIVATING RADIATION A COPY MEDIUM COMPRISING A PHOTOCONDUCTOR WHICH BECOMES ACTIVATED UPON EXPOSURE TO ACTIVATING RADIATION AND THEREBY CAPABLE OF CAUSING CHEMICAL REACTIONS AT PORTIONS OF SAID MEDIUM CORRESPONDING TO SAID IMAGE PATTERN OF ACTIVATING RADIATION AND THEN APPLYING TO SAID COPY MEDIUM A CHEMICALLY REACTIVE IMAGE-PRODUCING AGENT, THE IMPROVEMENT COMPRISING: EITHER PRIOR TO OR SUBSEQUENT TO THE EXPOSURE STEP APPLYING TO THE COPY MEDIUM THE FIRST COMPONENT OF A TWO COMPONENT IMAGE-FORMING AGENT REACTING ON CONTACT AT SAID ACTIVATED PORTIONS TO FORM REACTION PRODUCTS WHICH ARE CHEMICALLY NON-REACTIVE WITH A SECOND COMPONENT OF AN IMAGE-PRODUCING AGENT, AND THEN APPLYING TO SAID MEDIUM THE SECOND COMPONENT OF THE IMAGE-PRODUCING AGENT TO THEREBY FORM AN IRREVERSIBLE IMAGE IN THE NON-EXPOSED AREAS.

Inventors

• 👤 Leonard E Ravich
• 👤 Elliot Berman
• 👤 Carl F W Ekman

Bibliographic Details