Abstract: A heat sensitive transfer recording medium is disclosed, which is excellent in the heat-transferability onto a large variety of paper surface and is suitable usable for repetitive printings. The recording medium comprises a subbed support and a heat fusible coloring material layer which contains at least one compound having a plurality of polar groups and/or polar bonds selected from the group consisting of a hydroxyl group, an amino group, an imino group, a carboxyl group, an ester bond, an ether bond, an urethane bond and an amino bond.

Abstract: Heat-sensitive recording sheet comprising a heat-sensitive color developing layer having particular chemicals on the support sheet and an overcoat layer laminated thereon and a backcoat layer on the back of the support sheet, wherein the sheet provides excellent coloring characteristics and high stability in storage.

Abstract: A pressure-sensitive carbonless transfer sheet comprising a paper substrate having a front and back surface and a coating compositon adhered to at least one of the front and back surfaces of the paper substrate. The coating composition is set to a flexible, tack-free coat, and the coating composition includes a solvent free non-aqueous hot melt suspending medium which is characterized by being substantially water insoluble, being characterized by the presence of one or more functional groups selected from the group consisting of: carboxyl, carbonyl, hydroxyl, ester, amide, amine, heterocyclic groups and combinations thereof to impart polarity thereto and having a melting point of from about 60.degree. C. to about 140.degree. C. and a melting point range of less than about 15.degree. C.

Abstract: An image producing system is provided which comprises a carrier material of fabric, paper, a felt or fabric pad impregnated with a color former solution, comprising a weakly volatile high boiling organic solvent having dissolved therein a color former and a color former deactivating substance, wherein the color former is an azo compound and a substrate which has incorporated therein or possesses at least one surface which is at least partially coated with a color former activating substance or system and a re-activating substance which counteracts the de-activating substance.