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Quantum Computing

Transfer-imaging-system

Method of preparing cyclodextrin-coated surfaces

OF THE INVENTION The invention herein is based on several key discoveries. One is that in the ...

Contrast-enhancing agent for photolithography

OF THE PREFERRED EMBODIMENTS As is understood from the above given summary of the invention, the ...

Process for forming direct positive color image

OF THE INVENTION It was found that the above-described objects of this invention could be ...

Contrast enhanced photolithography

OF THE INVENTION A number of positive photolithographic resists utilise an alkali based developer ...

Preparation of stable solutions of azo dyes of m-phenylenediamine by reaction with formic acid

I claim: 1. A process for preparing a stable solution of an azo dye obtained by diazotizing and ...

Tethered sulfonium salt photoinitiators for free radical polymerization

AND SPECIFICATION OF THE INVENTION This invention teaches the photopolymerization of free ...

Process for preventing yellowing of polyamide fibre materials treated with stain-blocking agents by treatment with water-soluble light stabilizer having fibre affinity

We claim: 1. A process for preventing yellowing of a polyamide fiber material treated with a stain-...

Method of producing dyed polysaccharide:amino or imino starch derivative with reactive dye

OF THE INVENTION In the general formula [I], the arylene group of R includes phenylene group, ...

Method for forming a direct positive image

OF THE INVENTION The nucleating agent represented by the foregoing general formula (N-I) is ...

Recording material

What is claimed is: 1. A recording material comprising at least one leuco dye having formula (I), ...

Transfer imaging system

Details

Inventors: Sanders, Frederick W.;
Assignee: The Mead Corporation (Dayton, OH)
Primary Examiner: Michl; Paul R.
Assistant Examiner: Hamilton; Cynthia
Attorney, Agent or Firm: Smith & Schnacke

A transfer imaging system is disclosed wherein images are formed by image-wise exposing a layer comprising a chromogenic material and pressure rupturable capsules containing, as an internal phase, a photosensitive composition. In a preferred embodiment, the chromogenic material is encapsulated with the photosensitive composition. Upon exposure and capsule rupture the chromogenic material is image-wise transferrable to a developer or copy sheet where the chromogenic material reacts with a developer to form an image. Preferred systems are sensitive to U.V. or blue light in the wavelength range of 380 to 480 nm.

DETAILED DESCRIPTION Thus, a principal object of the present invention is to provide an imaging system in which images are formed by image-wise exposing a photosensitive encapsulate to actinic radiation and rupturing the capsules in the presence of a developer such that there is a patterned reaction of a chromogenic material, present in the encapsulate or co-deposited on a support with the encapsulate, and the developer which yields an image of the original.
Another object of the present invention is to provide an imaging system based on a photosensitive encapsulate which provides images with high resolution and good tonal qualities.
Still another object of the present invention is to provide a dry photocopy system which is affordable and does not require expensive and sophisticated machinery for exposure and processing.
A specific object of the present invention is to provide a transfer imaging system in which an image-wise exposed imaging sheet bearing the photosensitive encapsulate is placed in contact with a developer or copy sheet and the capsules are ruptured such that chromogenic material pattern-wise transfers to the developer sheet and reacts to form an image.
Another object of the present invention is to provide an imaging system which is useful in transmission and reflected light imaging and hence can be utilized in photocopying printed documents and other materials.
Another object of the present invention is to provide an imaging sheet carrying a photosensitive encapsulate wherein the encapsulate comprises a chromogenic material and a photosensitive composition.
Another more particular object of the present invention is to provide an imaging paper which is sensitive to blue light (380 to 480 nm), and which incorporates a fugitive yellow dye such that said system can be handled in room light for sufficiently short periods of time to load said paper in an exposure apparatus.
A still further object of the present invention is to provide an imaging process wherein images are formed by exposing a layer of a photosensitive encapsulate preferably containing a chromogenic material to actinic radiation, and rupturing the capsule in the presence of a developer

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