Heat-sensitive transfer medium

Details Heat-sensitive transfer medium Heat-sensitive transfer medium

1989-08-24

1992-01-07

Schwartz, Pamela R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428195, 428500, 428913, 428914, B41M 526

Patent

active

050790714

ABSTRACT:
In a heat sensitive transfer medium (i.e., an ink ribbon) including a base layer, an ink layer containing a coloring agent, and an ink releasing layer interposed between the base layer and the ink layer, the present invention incorporates a heat retaining layer between the base layer and the ink releasing layer for in order to delay the dissipation of heat from the ink releasing layer. When ink has a higher resin content for the purpose of printing on rough paper, the molten ink can act as an adhesive between the paper and the ink ribbon during printing thereby causing a delay in the separation of the ink ribbon from the paper. This delay allows the ink releasing layer to cool and the molten ink to become attracted to both the paper and the ink ribbon, thus resulting in poor printing quality. The heat retaining layer suppresses the dissipation of heat from the ink releasing layer and therefore allows the ink to adhere the paper causing reliably good printing quality.

REFERENCES:
patent: 4631232 (1986-12-01), Ikawa et al.

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