Laser imaging materials comprising carbon black in overlayer
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United States of America Patent
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May 13, 1986
Grant Date -
N/A
app pub date -
Oct 13, 1983
filing date -
Oct 14, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The laser imaging material comprises a laser-transparent support layer of, for example, polyester. A first overlying layer is laser-transparent and formed from a binder that is instantaneously thermally-chemically-decomposable with the production of a gas, for example, an acrylic or methacrylic homopolymer or copolymer, a cellulosic polymer, or a homopolymer or copolymer of stryene. A second overlying layer is formed from such a material, the same as or different from that of the first overlying layer, pigmented with carbon black. Upon laser irradiation through the support layer 10, selected portions of the carbon black are transferred to a suitable receptor surface such as paper or a lithographic plate.
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