Printer ribbon and film used for preparation thereof

Details Printer ribbon and film used for preparation thereof Printer ribbon and film used for preparation thereof

1987-07-31

1988-12-13

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Ribbon, per se

428914, 525240, B41J 3100

Patent

active

047906766

ABSTRACT:
Disclosed is a film for a printer ribbon, which is made of a resin composition comprising, 55 to 95% by weight of high-density polyethylene and 5 to 45% by weight of low-density polyethylene and having a melt tension of at least 1.4 g and a density of 0.94 to 0.96 g/cm.sup.3. The film is made by the T-die-chill roll method wherein a good stability at both ends of the extruded molten resin film is maintained to prevent the occurrence of an uneven thickness or formation of wrinkles, and wherein undesirable engulfment of air between the molten resin film and the chill roll is avoided.

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