Cover film for hard copy printing paper

Details Cover film for hard copy printing paper Cover film for hard copy printing paper

1989-10-04

1990-12-11

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having plural interactive leaves

8471, 428203, 428419, 4284755, 4284758, 428480, 428483, 428500, 428913, 428914, B41M 5035, B41M 526

Patent

active

049771361

ABSTRACT:
The present invention relates to a cover film for hard copy printing paper which can easily form a colorless and transparent protecting layer on the surface of, for example, a printing paper on which a color picture image is printed. The cover film for hard copy printing paper is such one that the cover film for hard copy printing paper is formed on the surface of a hard copy printing paper on which the printing is carried out by the sublimation transfer method and the cover film is designed to include at least one layer the glass transition temperature of which is selected to be higher than 40.degree. C. and whose water absorbing ratio (ASTM D570) is selected to be lower than 2%, whereby even under high temperature and high humidity, the bad influence exerted by the movement of a dye can be removed.

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