Imaging system
AssigneeThe Mead Corporation
InventorFrederick W. Sanders
Life of this patent
Estimating the term…
Abstract
An imaging system in which images are formed by image-wise exposing a layer containing a chromogenic material and a photosensitive composition in which at least the photosensitive composition is encapsulated in a layer of pressure rupturable capsules. Exposure and capsule rupture renders the chromogenic material image-wise accessible to the developer for a patterned image forming reaction.
Claims22
A photosensitive imaging system in which images are formed by image-wise reaction of one or more chromogenic materials and a developer, said system comprising:
- a substrate having front and back surfaces,
- a chromogenic material,
- a composition which undergoes a decrease in viscosity upon exposure to actinic radiation,
- a coating containing said chromogenic material and said composition on one of said front and back surfaces, and
- a developer material capable of reacting with said chromogenic material to form a visible image,
- said composition being encapsulated in rupturable capsules as an internal phase,
- wherein images are formed by image-wise exposing said coating to actinic radiation and rupturing said capsules in the exposed areas such that said internal phase is released from capsules in the exposed areas and said chromogenic material and said developer react pattern-wise to form an image.
A self-contained imaging sheet in which images are formed by image-wise reaction of one or more chromogenic materials and a developer material, said sheet comprising:
- a substrate having front and back surfaces,
- a chromogenic material,
- a composition which undergoes a decrease in viscosity upon exposure to actinic radiation,
- a coating containing said chromogenic material and said composition on one of said front and back surfaces, and
- a developer material capable of reacting with said chromogenic material to form a visible image co-deposited on said substrate with said coating containing said chromogenic material,
- said composition being encapsulated in rupturable capsules as an internal phase,
- wherein images are formed by image-wise exposing said coated substrate to actinic radiation and rupturing said capsules in the exposed areas such that said internal phase is released from said capsules in the exposed areas and said chromogenic material pattern-wise reacts with said developer material to form an image.
An imaging process which comprises:
- image-wise exposing to actinic radiation an imaging sheet comprising a substrate and a coating comprising a substantially colorless chromogenic material and rupturable capsules containing a photosensitive composition which undergoes a decrease in viscosity upon exposure to actinic radiation, and
- rupturing said capsules in the exposed areas in the presence of a developer material such that there is a patterned reaction between said chromogenic material and said developer material which produces a negative image corresponding to said exposure.
Dependencies are inferred from the claim text.