Thermal resistive printing fluorescent postage stamps

Details Thermal resistive printing fluorescent postage stamps Thermal resistive printing fluorescent postage stamps

1999-09-02

2000-06-20

Tran, Huan

Incremental printing of symbolic information

Thermal marking apparatus or processes

347217, 347221, 347176, B41J 2235

Patent

active

060783427

ABSTRACT:
Thermal resistive printing apparatus for printing a fluorescent postal stamp image on a receiver in response to a digital image includes a donor web carrying at least one visible colorant material under visible light and an invisible fluorescent material which when illuminated by light in a predetermined portion of a spectrum, emits light in a different portion of the spectrum and a receiver for receiving colorant material and fluorescent material from the donor web and the receiver having a plurality of receiver portions in which the stamp images are to be formed. The apparatus further includes a thermal resistive head including a plurality of thermal resistive elements responsive to the digital image for selectively applying heat to the donor web so that colorant material and fluorescent material are transferred from the donor web to the plurality of portions on the receiver to form fluorescent postal images.

REFERENCES:
patent: 3592326 (1971-07-01), Zimmerle
patent: 4866025 (1989-09-01), Byers et al.
patent: 5176458 (1993-01-01), Wirth
patent: 5841459 (1998-11-01), Wen

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