Image transfer to diverse paper stocks

• US 5,094,931 A
• Filed: 04/23/1990
• Issued: 03/10/1992
• Est. Priority Date: 04/15/1987
• Status: Expired due to Fees

• Current Assignee: Hoechst Celanese Corporation (Sanofi )
• Original Assignee: Hoechst Celanese Corporation (Sanofi )
• Inventors: Platzer, Stephan J. W.
• Primary Examiner(s): Schilling, Richard L.
• Application Number:
  US07/513,016
• Time in Patent Office: 687 Days
• Field of Search: 430/287, 430/258, 430/283, 430/143, 430/293, 430/294, 430/950, 430/961, 430/47, 430/257
• US Class Current: 430/143
• CPC Class Codes: G03F 3/10 Checking the colour or tonal value of separation negatives or positives

Abstract

The invention provides a method for protecting an image which comprises providing a multilayered colored image on a permanent receiver which may be any of a wide range of materials. A photosensitive element on a substrate is laminated to a temporary element and exposed with substrate removal before development. After development, the steps are repeated with another color. A protective element is laminated to the colored image. After removal of the support of the temporary element, the colored image with protective element is laminated to a permanent receiver.

Claims

1. A method for forming a colored image on a permanent support which comprises:

A) providing a photosensitive element which comprises, in order;

a substrate having a release surface; and

a photosensitive member directly attached to said release surface, which member comprises

a colored, adherent, photosensitive layer, which layer comprises light sensitive, positive working or negative working compound;

a resinous binder and at least one colorant; and

B) providing a temporary element, which comprises a dimensionally heat stable support having a release surface;

C) either

i) laminating said photosensitive member with heat and pressure to the release surface of the temporary element; and

removing said substrate from the photosensitive element by the application of peeling forces thus transferring the photosensitive member to the release surface of the temporary element; and

imagewise exposing said photosensitive layer to actinic radiation to thereby form image and non-image portions of the photosensitive member on the release surface of the temporary element;

or

ii) imagewise exposing said photosensitive layer to actinic radiation; and

laminating said photosensitive member with heat and pressure to the release surface of the temporary element; and

removing said substrate from the photosensitive element by the application of peeling forces thus transferring the image and non-image portions of the photosensitive member to the release surface of the temporary element;

or

iii) laminating said photosensitive member with heat and pressure to the release surface of the temporary element; and

imagewise exposing said photosensitive layer to actinic radiation; and

removing said substrate from the photosensitive element by the application of peeling forces, thus transferring the image and nonimage portions of the photosensitive member to the release surface of the temporary element; and

thereafter

D) removing the nonimage areas of said photosensitive layer with a liquid developer, thereby providing a colored image on the release surface of the temporary element; and

E) proving a protective element, which element comprises a dimensionally heat stable base on which base is applied an adhesive; and

F) laminating said protective element to said colored image via said adhesive; and

G) removing the support of the said temporary element thereby transferring said image to said protective element and uncovering at least a portion of an adhesive layer; and

laminating the protective element via said uncovered adhesive layer to a permanent support.

2. The method of claim 1 wherein said support, substrate and base, comprise one or more materials selected from the group consisting of organic polymer, paper, and paper laminates.

3. The method of claim 1 wherein said light sensitive compound comprises one or more components selected from the group consisting of diazides, diazonium salts, and photopolymerizable or photocrosslinkable compositions.

4. The method of claim 1 wherein said resin binder comprises one or more components selected from the group consisting of polyvinyl butyral, styrene-maleic anhydride copolymer half esters, and polyvinyl acetal/acetate/alcohol copolymers.

5. The method of claim 1 wherein said adhesive comprise a polyvinyl acetates and copolymers of polyvinyl acetate and polyvinyl chloride.

6. The method of claim 1 wherein said permeant support comprises paper, coated paper, or metals.

7. The method of claim 1 wherein applied to said support of said temporary element is a colorless adhesive, which adhesive layer has a softening point in the range of from about 60°

C. to about 180°

C.

8. The method of claim 7 wherein on the colorless adhesive layer of the temporary element is applied an antiblocking layer;

said antiblocking layer comprising one or more organic polymers or copolymers, which antiblocking layer does not cohesively block at about 50°

C. or less.

9. The method of claim 8 wherein said antiblocking layer comprises one or more compounds selected from the group consisting of styrene-maleic anhydride copolymers, polyvinyl acetals, polyvinyl acrylates, and polyvinyl acetate/polyvinyl chloride copolymers.

10. The method of claim 1 wherein said laminations are conducted at a temperature of from about 60°

C. to about 90°

C.

11. The method of claim 1 where said support, substrate and base comprise one or more materials selected from the group consisting of organic polymer, paper and paper laminates;

and wherein said permanent support comprises paper, coated paper, or metals; and

wherein said light sensitive compound comprises one or more components selected from the group consisting of diazides, diazonium salts, and photopolymerizable or photocrosslinkable compositions; and

wherein said resinous binder comprises one or more components selected from the group consisting of polyvinyl butyral, styrenemaleic anhydride copolymer half esters, and polyvinyl acetal/acetate/alcohol copolymers; and

wherein said adhesive comprises a polyvinyl acetate and copolymers of polyvinyl acetate and polyvinyl chloride;

and wherein said laminations are conducted at a temperature of from about 60°

C. to about 90°

C.

12. The method of claim 1 further comprising a colorless adhesive layer adhered to said colored photosensitive layer, which adhesive layer has a softening point in the range of from about 60°

C. to about 180°

C.

13. The method of claim 12 further comprising a noncolored photosensitive or nonphotosensitive barrier layer coating between said colored photosensitive layer and said adhesive layer, said barrier layer being effective to prevent the intermingling of said colored photosensitive and adhesive layer.

14. The method of claim 1 further comprising repeating steps A-D prior to conducting step C by laminating another photosensitive member having a different colorant to the previous imaged layer.

15. The method of claim 1 wherein said protective element further comprises a release layer between the base and the adhesive layer thereon.

16. The method of claim 15 wherein said protractive element further comprises an antiblocking layer between the release layer and the adhesive layer thereon.

17. The method of claim 1 further comprising the subsequent step for removing the dimensionally heat stable base of the protective element thereby transferring the colored image onto said permanent support.

18. A method for forming a colored image which comprises:

A) providing a photosensitive element which comprises, in order;

a substrate having a release surface; and

a photosensitive member directly attached to said release surface, which member comprises

i) a colored, adherent, photosensitive layer, which layer comprises a light sensitive, positive working or negative working compound;

a resinous binder and at least one colorant; and

ii) a first colorless adhesive layer adhered to on said colored photosensitive layer, which adhesive layer has a softening point in the range of from about 60°

C. to about 180°

C.; and

iii) a noncolored photosensitive or nonphotosensitive barrier layer coating between said colored photosensitive layer and said first adhesive layer said barrier layer being effective to prevent the intermingling of said colored photosensitive and first adhesive layers; and

thereafter

B) providing a temporary element, which comprises a dimensionally heat stable support having a release surface on which release surface is applied a colorless adhesive, which adhesive layer has a softening point in the range of from about 60°

C. to about 180°

C., on which adhesive is applied an antiblocking layer;

said antiblocking layer comprising one or more organic polymers or copolymers, which antiblocking layer does not cohesively block at about 50°

C. or less;

C) either

i) laminating said photosensitive member with heat and pressure to the antiblocking layer of the temporary element; and

removing said substrate from the photosensitive element by the application of peeling forces thus transferring the photosensitive member to the antiblocking layer of the temporary element; and

imagewise exposing said photosensitive layer to actinic radiation to thereby form image and non-image portions of the photosensitive member on the antiblocking layer of the temporary element;

or

ii) imagewise exposing said photosensitive layer to actinic radiation; and

laminating said photosensitive member with heat and pressure to the antiblocking layer of the temporary element; and

removing said substrate from the photosensitive element by the application of peeling forces thus transferring the image and non-image portions of the photosensitive member to the antiblocking layer of the temporary element;

or

iii) laminating said photosensitive member with heat and pressure to the antiblocking layer of the temporary element; and

imagewise exposing said photosensitive layer to actinic radiation; and

removing said substrate from the photosensitive element by the application of peeling forces, thus transferring the image and nonimage portions of the photosensitive member to the antiblocking layer of the temporary element; and

thereafter

D) removing the nonimage areas of said photosensitive layer with a liquid developer, which removing is conducted at a temperature at which said adhesive layers are substantially nontacky, thereby providing a colored image on the antiblocking layer of the temporary element; and

E) repeating steps A-D by laminating another photosensitive member having a different colorant to the previous imaged antiblocking layer; and

providing a protective element, which element comprises a dimensionally heat stable base having a release layer on which release layer is applied a second adhesive and another antiblocking layer between said base and said second adhesive; and

F) laminating said protective element to said colored image via said second adhesive; and

G) removing the support of the said temporary element thereby uncovering an adhesive layer; and

laminating the protective element via said uncovered adhesive layer to a permanent support.

19. The method of claim 18 further comprising the subsequent step of removing the dimensionally heat stable base of the protective element thereby transferring the colored image unto said permenant support.

20. The method of claim 18 wherein said support, substrate and base comprise one or more materials selected from the group consisting of organic polymer, paper and paper laminates;

and wherein said permanent support comprises paper, coated paper, or a metal; and

wherein said light sensitive compound comprises one or more components selected from the group consisting of diazides, diazonium salts, and photopolymerizable or photocrosslinkable compositions; and

wherein said resinous binder comprises one or more components selected from the group consisting of polyvinyl butyral, styrenemaleic anhydride copolymer half esters, and polyvinyl acetal/acetate/alcohol copolymers; and

wherein said adhesive comprises a polyvinyl acetate or copolymer of polyvinyl acetate and polyvinyl chloride; and

wherein said antiblocking layers comprise one or more compounds selected from the group consisting of styrenemaleic anhydride copolymers, polyvinyl acetals, polyvinyl acrylates, and polyvinyl acetate/polyvinyl chloride copolymers; and

wherein said laminations are conducted at a temperature of from about 60°

C. to about 90°

C.