Method to selectively remove lubricant from one side of lubricant-coated support
AssigneeEastman Kodak Company
InventorsBradley Keith Coltrain, Dennis Ray Freeman, David Appler Glocker
Life of this patent
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Abstract
Elements having a support with lubricant on both sides can be treated to remove substantially all of the lubricant from one side only. Various chemical, mechanical and electrical treatments are contemplated, but glow discharge treatment is particularly useful. Photographic film supports having one or more layers applied thereto can be treated in this manner before or after annealing so that lubricant present on the treated side does not reduce adhesion of later applied silver halide emulsion layers.
Claims27
A method for treating an element comprising a support having on both sides thereof a lubricant providing a coefficient of friction of less than about 0.5,
- said method comprising the step of removing substantially all of said lubricant from only one side of said support.
A method for treating an element comprising a support having on both sides thereof a lubricant that provides a coefficient of friction of less than about 0.5,
- said method comprising the step of removing substantially all of said lubricant from only one side of said support by subjecting said only one side of said support to glow discharge treatment.
A method for preparing a photographic element comprising a polymeric film or resin-coated paper support having on both sides thereof a lubricant that provides a coefficient of friction of less than about 0.5, said method comprising:
- A) subjecting only one side of said support to glow discharge treatment for a time and at an energy level sufficient to remove substantially all of said lubricant from that only one side of said support, and
- B) applying a radiation sensitive layer to said only one side of said support.
A method for preparing a photographic element comprising:
- A) providing a synthetic polymeric film support having on both sides thereof a lubricant that provides a coefficient of friction of less than about 0.3,
- B) subjecting only one side of said film support to, glow discharge treatment for at least 0.1 seconds and at least 0.5 joules/cm.sup.2 sufficient to remove substantially all of said lubricant from that one side of said film support, and
- C) coating a radiation sensitive layer on said only one side of said film support.
Dependencies are inferred from the claim text.