Thermal imaging involving imagewise melting to form spaced apart

Details Thermal imaging involving imagewise melting to form spaced apart Thermal imaging involving imagewise melting to form spaced apart

1973-10-19

1976-12-28

Martin, Jr., Roland E.

Coating processes

Electrical product produced

Welding electrode

96 27E, 96 33, 96 44, 96 48QP, 250316, 250317, 427 43, 427 53, B95C 500, G03C 516, G03C 504, G03C 524

Patent

active

040003345

ABSTRACT:
A dispersion imaging material, such as tellurium, which disperses upon the absorption of energy above a certain threshold is provided in the form of a thin, continuous film, preferably on a substrate. Energy, in the form of a pulse, is applied to the continuous film in a pattern, which includes a plurality of regions, in an amount and for a length of time sufficient to cause dispersion of the dispersion imaging material simultaneously in all those regions which receive the energy. Preferably, the energy is applied through an imaging mask to produce a duplicate of the image. Sensitizing materials advantageously can be employed to form an indigenous mask on the dispersion imaging material. In addition, dispersion promoting materials can be utilized to enhance and accelerate the formation of a stable image. In the preferred embodiment of the method, the dispersion imaging material is carried on a substrate having a low heat conductivity.

REFERENCES:
patent: 3392020 (1968-07-01), Yutzy et al.
patent: 3451813 (1969-06-01), Kinney et al.
patent: 3476578 (1969-11-01), Brinckman
patent: 3522047 (1970-07-01), Kishidg et al.
patent: 3549733 (1970-12-01), Caddell
patent: 3715210 (1973-02-01), Watkinson et al.
patent: 3716844 (1973-02-01), Brodsky
patent: 3753705 (1973-08-01), Goffe
patent: 3804620 (1974-04-01), Wells
Harris et al., "Continuous Wave Laser Recording on Metallic Thin Film", Image Technology, vol. 12, No. 13, p. 31, April/May 1970.
Physical Properties of Kodak Estar Base Films, Eastman Kodak Co., Rochester, N.Y. 1964.

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