Physical development composition and process of using same

Abstract

Abstract THIS INVENTION RELATES TO A NVEL PHOTOGRAPHIC PHYSICAL DEVELOPMENT SYSTEM COMPRISING AN ACIDIC TO NEUTRAL SOLUTION OF REDUCING AGENT COMPRISING A DIAMINE COMPOUND AND A HYDROXYLAMINE COMPOUND. THE PREFERRED FIAMINE COMPOUND HAS THE STRUCTURE OF: R1-N(-R2)-(C(-)=C(-))N-N(-R3)-R4 AND THE PREFERRED HYDROXYLAMINE COMPOUND HAS THE STRUCTURE OF: HO-(C(-)=C(-))N-N(-R1)-R2 WHEREIN N MAY BE 0 OR AN INTEGER FROM 1 TO 10 AND WHEREIN R1, R2, R3, AND R4 MAY BE HYDROGEN, AND SUBSTITUTED OR UNSUBSTITUTED ALKYL, ARYL, ALKARYL, AND ARALKYL GROUPS AND WHEREIN R1, R2, R3, AND R4 MAY BE THE SAME OR DIFFERENT. IT WILL BE UNDERSTOOD THAT ACID ADDITION COMPOUNDS OF EITHER THE DIAMINE COMPOUND OR THE HYDROXYLAMINE COMPOUND MAY ALSO BE USED IN THIS INVENTION. THIS REDUCING AGENT SOLUTIONMAY BE COMBINED WITH A SOLUTION OF A READILY REDUCIBLE MATERIAL WHICH IS AT LEAST AS STRONG AS OXIDIZING AGENT AS CUPRIC ION TO FORM A UNITARY DEVELOPER SOLUTION. A PREFERRED EMBODIMENT, HOWEVER, COMPRISES THE TWO SEPARATE SOLUTIONS, I.E., THE REDUCING SOLUTION AND THE SOLUTION OF READILY REDUCIBLE MATERIAL WHICH IS AT LEAST AS STRONG AN OXIDIZING AGENT AS CUPRIC ION, ARE USED AS SEPARATE SOLUTIONS. THESE DEVELOPER SOLUTIONS MAY THEN BE USED IN PROCESSES WHEREIN PHYSICAL DEVELOPERS ARE ORIDINARILY USED. THEREFORE THE DEVELOPER SYSTEMS OF THIS INVENTION MAY BE USED TO PRODUCE A VISIBLE IMAGE ON A PHOTOSENSITIVE COPY MEDIUM WHICH HAS BEEN EXPOSED TO AN IMAGE PATTERN OF ACTIVATING RADIATION. THESE DEVELOPERS MAY ALSO BE USED FOR THE INTENSIFICATION OF DEVELOPED IMAGES IN THESE AND LIKE PHOTOGRAPHIC SYSTEMS. FOR EXAMPLE, THESE SYSTEMS MAY BE USED TO INTENSIFY CHEMICALLY DEVELOPED IMAGES IN SILVER HALIDE PHOTOGRAPHIC SYSTEMS.

Inventors

• 👤 Jean-Paul Archambault
• 👤 John R Manhardt

Bibliographic Details