Printing roll having a controllable heat-absorbing internal...

Electrophotography – Image formation – Fixing

Reexamination Certificate

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C399S328000, C399S333000, C219S216000, C430S124320, C347S156000, C492S018000, C492S046000

Reexamination Certificate

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07460822

ABSTRACT:
A roll useful in fusing marking material to a print sheet includes a coating disposed on at least a portion of the inner surface thereof. A lamp disposed inside the roll supplies radiant energy to the inner surface. The coating changes its absorptivity (such as color) as desired, to obtain specific desired temperatures at different portions of the roll. The coating can be thermochromic, changing its absorptivity in response to local temperature; or electrochromic, changing its absorptivity in response to an external electrical stimulus.

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patent: 5974294 (1999-10-01), Tange
“Solar Energy Regulation through Electrochromic Windows based on Polyaniline, Prussian Blue and Tungsten Oxide,” Bjorn Petter Jelle and Georg Hagen, Building Physics 2002—6thNordic Symposium, Session 8: Energy Use 2, pp. 357-364.
Guinneton et al, “Optimized Infrared Switching Properties . . . ”Thin Solid Films446 (2004) 287-295.
Towns, “The heat is on for new colours,”JSDC, vol. 115 Jul./Aug. 1999, 196-199.
http://www.azom.com/details.asp?ArticleID=1197 “Polyaniline—Processing and Applications”.
Lu et al., “Use of Ionic Liquids for π—Conjugated Polymer Electrochemical Devices,”Science, vol. 297, 983-987 (2002).

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