Image receptor element for the dye diffusion transfer process
AssigneeAgfa-Gevaert
InventorsWerner Liebe, Karl Lohmer, Willibald Pelz
Life of this patent
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Abstract
An image receptor element for the dye diffusion transfer process contains an image-receiving layer, which has increasing dye absorption capacity with increasing distance from the light-sensitive layers. Such an image-receiving layer may be obtained by use of mordants in concentrations which increase with increasing distance from the light-sensitive layers or by use of at least two mordants of different dye absorption capacity, the mordant of higher dye absorption capacity being arranged in a partial layer of the image-receiving layer further away from the light-sensitive layers. Such image receptor elements provide higher dye densities with lower total concentrations of mordants.
Claims4
An image receptor element for dye diffusion transfer process with diffusible dye anions comprising
- a support and
- at least one image receiving layer containing as a mordant for said dye anions, means for providing in the image receiving layer a dye absorption capacity which is variable normal to the plane of the layer in the direction of diffusion of the dye anions into the image receiving layer during processing from a light sensitive element which is in alkali permeable contact with the image receiving layer,
- said means comprising cationic groups reactable with the diffusible dye anions and distributed in the image receiving layer so as to provide an increase in the dye absorption capacity extending through the image receiving layer normal to the plane of the layer and with increasing distance from the contact.
A photographic material for dye diffusion with diffusible dye anions process, comprising at least one light-sensitive silver halide emulsion layer and associated to it a uniform distribution of a color-providing compound, and a supported image receptor element having at least one image receiving layer containing as a mordant for said dye anions, means for providing in the image receiving layer a dye absorption capacity which increases normal to the plane of the layer in the direction of diffusion of the dye anions into the image receiving layer during processing away from a light sensitive element which is in alkali permeable contact with the image receiving layer,
- said means comprising cationic groups reactable with the diffusible dye anions and distributed in the image receiving layer so as to provide an increase in dye absorption capacity extending through the image receiving layer normal to the plane of the layer and with increasing distance from the contact.
Dependencies are inferred from the claim text.