Photographic process and element for the production of add-on images

Claim 2

A process as described in claim 1 wherein the support having thereon an image in a hydrophilic colloid layer comprises a support having a photographic dye image or a photographic silver image in a hydrophilic colloid layer.

Claim 3

A process as described in claim 1 wherein the hydrophobic, radiation-sensitive composition contains a hydrophobic, film-forming resin selected from the group consisting of polymeric vinyl compounds, cellulose esters, polyphenylene oxides, homopolymers and copolymers of acrylic acid, terpolymers of ethylene glycol, isophthalic acid and terephthalic acid, terpolymers of p-cyclohexanedicarboxylic acid, isophthalic acid and cyclohexylenebismethanol and copolymers of p-cyclohexanedicarboxylic acid and 2,2,4,4-tetramethylcyclobutane-1,3-diol.

Claim 4

A process for preparing add-on photographic images on and removing add-on photographic images from a support having thereon an image in a hydrophilic colloid layer, which process comprises: a. coating a hydrophobic, radiation-sensitive composition over a portion of the hydrophilic colloid layer, b. imagewise exposing the hydrophobic, radiation-sensitive composition, c. developing a visible photographic image in the hydrophobic composition, and thereafter d. treating the exposed, image-bearing hydrophobic composition with a solvent for composition which is not a solvent for said hydrophilic colloid layer thereby removing said exposed hydrophobic composition including the add-on photographic image contained therein, all without substantially impairing the image in the hydrophilic colloid layer.

Claim 5

A process for preparing and removing add-on photographic images on a support having thereon an image in a hydrophilic colloid layer, which process comprises: a. coating over a portion of the hydrophilic colloid layer a first, strippable layer comprising a substantially hydrophobic resin and a second layer comprising a hydrophobic, radiation-sensitive composition, b. imagewise exposing the hydrophobic, light-sensitive composition, c. developing a visible photographic image in the hydrophobic composition, and thereafter d. physically stripping the coated hydrophobic layers including the add-on photographic image from the underlying hydrophilic colloid layer to remove the add-on image without substantially impairing the image in the hydrophilic colloid layer.

Claim 6

A process for preparing an add-on photographic image on a support having thereon an image in a hydrophilic colloid layer, which process comprises: a. coating over a portion of the hydrophilic colloid layer, a light-sensitive hydrophobic diazo-type composition containing a hydrophobic film-forming vehicle, a light-sensitive diazonium salt and a coupler compound which can react with the diazonium salt to produce an azo dye, b. imagewise exposing the hydrophobic, light-sensitive diazo-type composition, and thereafter c. developing a visible photographic azo dye image in the hydrophobic composition without substantially impairing the image in the hydrophilic colloid layer.

Claim 7

A process for preparing an add-on photographic image on a support having thereon an image in a hydrophilic colloid layer, which process comprises: a. coating over a portion of the hydrophilic colloid layer a first, strippable layer comprising a substantially hydrophobic resin and a second layer comprising a light-sensitive hydrophobic diazo-type composition containing a hydrophobic film-forming vehicle, a light-sensitive diazonium salt and a coupler compound which can react with the diazonium salt to produce an azo dye, b. imagewise exposing the hydrophobic, light-sensitive diazo-type composition, and thereafter c. developing a visible photographic azo dye image in the hydrophobic composition without substantially impairing the image in the hydrophilic colloid layer.

Claim 8

A process as described in claim 7 wherein the support having thereon an image in a hydrophilic colloid layer comprises a support having a photographic dye image or a photographic silver image in a hydrophilic colloid layer.

Claim 9

A process as described in claim 7 wherein the light-sensitive hydrophobic diazo-type composition contains a hydrophobic, film-forming vehicle selected from the group consisting of vinyl polymers, cellulose esters, polyphenylene oxides, homopolymers and copolymers of acrylic acid, terpolymers of ethylene glycol, isophthalic acid and terephthalic acid, terpolymers of p-cyclohexanedicarboxylic acid, isophthalic acid and cyclohexylenebismethanol, and copolymers of p-cyclohexanedicarboxylic acid and 2,2,4,4-tetramethylcyclobutane-1,3-diol.

Claim 10

A process as described in claim 7 wherein the light-sensitive hydrophobic diazo-type composition contains as the image-forming components, a light-sensitive benzene diazonium salt and a phenolic coupler compound which can react with the diazonium salt to produce an azo dye.

Claim 11

A process as described in claim 10 wherein the light-sensitive hydrophobic diazo-type composition contains, as the image-forming components, the light-sensitive diazonium salt 2,5-diethoxy-4-morpholinobenzenediazonium tetrafluoroborate, and as the phenolic coupler compound, 2-hydroxy-3-naphth-o-anisidide.

Claim 12

A process for preparing an add-on photographic image on a support having thereon an image in a hydrophilic gelatin layer, which process comprises: a. coating over a portion of the hydrophilic gelatin layer, a light-sensitive hydrophobic diazo-type composition containing a hydrophobic film-forming vehicle selected from the group consisting of vinyl polymers, cellulose esters, polyphenylene oxides, homopolymers and copolymers of acrylic acid, terpolymers of ethylene glycol, isophthalic acid and terephthalic acid, terpolymers of p-cyclohexanedicarboxylic acid, isophthalic acid and cyclohexylenebismethanol, and copolymers of p-cyclohexanedicarboxylic acid and 2,2,4,4-tetramethylcyclobutane-1,3-diol, a light-sensitive benzene diazonium salt and a phenolic coupler compound which can react with the diazonium salt to produce an azo dye, b. imagewise exposing the hydrophobic, light-sensitive diazo-type composition, and thereafter c. developing a visible photographic azo dye image in the hydrophobic composition without substantially impairing the image in the hydrophilic gelatin layer.

Claim 13

A process as described in claim 13 wherein the light-sensitive hydrophobic diazo-type composition contains, as the image-forming components, the light-sensitive diazonium salt 2,5-diethoxy-4-morpholinobenzenediazonium fluoroborate, and as the phenolic coupler compound, 2-hydroxy-3-naphth-o-anisidide.

Claim 14

A process for preparing an add-on photographic image on a photographic transparency having a hydrophilic-hardened gelatin layer containing a photographic dye image, which process comprises: a. coating over a portion of the hydrophilic gelatin layer, a light-sensitive hydrophobic diazo-type composition containing a hydrophobic film-forming resin comprising poly(vinyl butyral), a light-sensitive diazonium salt comprising 2,5-diethoxy-4-morpholinobenzenediazonium fluoroborate and a phenolic coupler compound comprising 2-hydroxy-3-naphth-o-anisidide which can react with the diazonium salt to produce a visible azo dye image, b. imagewise exposing the hydrophobic, light-sensitive diazo-type composition, and thereafter c. treating the diazo-type composition with ammonia vapor to develop a visible photographic azo dye image without substantially impairing the visible image in the photographic transparency.

Claim 15

A process for preparing and removing add-on photographic images on a support having thereon an image in a hydrophilic colloid layer, which process comprises: a. coating over a portion of the hydrophilic colloid layer, a light-sensitive hydrophobic diazo-type composition containing a hydrophobic film-forming vehicle, a light-sensitive diazonium salt and a coupler compound which can react with the diazonium salt to produce an azo dye, b. imagewise exposing the hydrophobic, light-sensitive diazo-type composition, c. developing a visible photographic azo dye image in the hydrophobic composition, and thereafter d. treating the exposed image-bearing hydrophobic composition with a solvent for said composition which is not a solvent for said hydrophilic colloid layer to remove said hydrophobic composition, including the add-on azo dye image without substantially impairing the image in the hydrophilic colloid layer.

Claim 16

A process for preparing and removing add-on photographic images on a support having thereon an image in a hydrophilic colloid layer, which process comprises: a. coating over a portion of the hydrophilic colloid layer a first, strippable layer comprising a substantially hydrophobic resin anD a second layer comprising a light-sensitive hydrophobic diazo-type composition containing a hydrophobic film-forming vehicle, a light-sensitive diazonium salt and a coupler compound which can react with the diazonium salt to produce an azo dye, b. imagewise exposing the hydrophobic, light-sensitive diazo-type composition, c. developing a visible azo dye image in the hydrophobic composition, and thereafter d. physically stripping the coated hydrophobic layers from the underlying hydrophilic colloid layer to remove the add-on image without substantially impairing the image in the hydrophilic colloid layer.

Claim 17

A photographic element for the production of add-on photographic images, said element comprising a support having thereon a visible image in a hydrophilic colloid layer of which a portion is overcoated with a hydrophobic light-sensitive diazo-type layer containing a hydrophobic film-forming vehicle, a light-sensitive diazonium salt and a coupler compound which can react with the diazonium salt to produce an azo dye.

Claim 18

A photographic element as described in claim 18 wherein an intervening substantially hydrophobic resin layer is present between the hydrophilic colloid layer and the hydrophobic, light-sensitive diazo-type layer.