Apparatus for raised printing

Details Apparatus for raised printing Apparatus for raised printing

1984-10-11

1988-12-20

Eickholt, Eugene H.

Typewriting machines

Typing by other than type-face or type-die

Thermal

219216, 219388, 219553, 219476, 346 76R, B41J 302

Patent

active

047922460

ABSTRACT:
Raised printing is produced on a printed sheet by applying thermography powder to a top printed surface of the sheet while printed areas on such top surface are tacky, such that the powder adheres to such printed areas and is thereafter melted in a heating section. The heating section comprises an upper heater, a lower heater, and a conveyor for conveying the sheet between the upper and lower heaters such that the upper heater heats the sheet from above while the lower heater heats the sheet from below, to melt and expand the powder.

REFERENCES:
patent: 4075455 (1978-02-01), Kitamura et al.
patent: 4079673 (1978-03-01), Bernstein
patent: 4118178 (1978-10-01), Calvi et al.
patent: 4180721 (1979-12-01), Watanabe et al.
"Instruction Book to Get You Started in Raised Printing" Thermo-O-Type Corp. .COPYRGT.Jun. 1981, pp. 1-8.
"Production of Large Area Electrets" NASA Tech. Briefs, Spring 1979, pp. 55-56.

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