Photocopy sheet employing encapsulated radiation sensitive composition and imaging process
AssigneeThe Mead Corporation
InventorsFrederick W. Sanders, Gary F. Hillenbrand, Jonathan S. Arney, Richard F. Wright
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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.
Claims52
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 radiation curable composition which undergoes an increase in viscosity upon exposure to actinic radiation,
- a coating containing said chromogenic material and said radiation curable 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 radiation curable 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 image areas such that said internal phase is released from said capsules in the image 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 a front and back surface,
- a chromogenic material,
- a radiation curable composition which undergoes an increase in viscosity upon exposure to actinic radiation,
- a coating containing said chromogenic material and said radiation curable composition on one of said front and back surfaces,
- 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 radiation curable 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 image areas such that said internal phase is released from said capsules in the image areas and said chromogenic material pattern-wise reacts with said developer material to form an image.
Dependencies are inferred from the claim text.