Transfer sheet coated with microcapsules and oil-absorptive part

Details Transfer sheet coated with microcapsules and oil-absorptive part Transfer sheet coated with microcapsules and oil-absorptive part

1977-06-21

1979-05-15

Robinson, Ellis

Textiles: manufacturing

427152, 427153, 428306, 428307, 428323, 428327, 428328, 428330, 428331, 428913, 428914, B41L 136

Patent

active

041544625

ABSTRACT:
A transfer sheet is provided having a substrate coated with pressure-rupturable microcapsules containing an oil and an oil-soluble dye intermediate and a particulate oil-absorptive material which is non-reactive with the dye intermediate and is situated with respect to said microcapsules such that oil released by the microcapsules is absorbed thereby. The concentration of oil absorptive material is sufficient to permit writing on the coated substrate without interference from oil released by ruptured microcapsules but less than that which materially reduces the transfer of oily solution from ruptured microcapsules to an underlying copy sheet.

REFERENCES:
patent: 3389007 (1968-06-01), Oda
patent: 3844816 (1974-10-01), Vassiliades
patent: 3900671 (1975-08-01), Evans
patent: 3906123 (1975-09-01), Vincent
patent: 3955025 (1976-05-01), Matsukawa

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