Photo and pressure sensitive recording medium

Claim 1

In a photo and pressure sensitive recording medium of the type comprising: a microcapsule sheet including a plastic substrate sheet and a layer formed of a mixture of a plurality of photo-curable microcapsules and resinous binder, said layer being carried on a side of said substrate sheet, said microcapsules each containing a dye precursor, photo-curable resin, and polymerization initiator, wherein when said microcapsule sheet is exposed to ling in accordance with an image to be developed, said microcapsules coated on an area corresponding to said image are cured, and a developing sheet, said developing sheet being coated with a developer material which is reactable with said dye precursor, said developing sheet being arranged to be superimposed over and pressurized with said microcapsule sheet so that a visible image corresponding to said image is formed on said developing sheet by means of a reaction between said developer material and said dye precursor streamed out of the uncured microcapsules; the improvement wherein said substrate sheet has fine irregularities formed therein by adhesion-facilitating processing on said side on which said layer is formed whereby a high adhesion strength of said microcapsules to said substrate sheet is formed so that cured microcapsules are prevented from adhering to said developing sheet when said microcapsules sheet and said developing sheet are superimposed against and pressurized with each other.