G - Physics – 03 – G
Patent
G - Physics
03
G
314/29, 314/32
G03G 15/16 (2006.01) G03G 15/18 (2006.01) G03G 15/23 (2006.01) G03G 15/24 (2006.01)
Patent
CA 2016349
Abstract A transport member moves in a cyclic path to carry material from a first location to a second location at a different temperature, and counter-moving portions of the member exchange heat with each other along an intermediate portion of the path, so that minimum energy is lost to the environment. In one embodiment as a printing apparatus, a belt transports a heat-fusible toner to a heated location where it softens and is transferred by pressure as a print image to a sheet. Effective powder pick up and release is obtained in the printing apparatus with a transport member having an elastomeric base layer of a sufficient softness to conform to a rough member such as paper, and a non-tacky outer coating which is harder than the elastomeric layer. The outer coating has a low surface free energy, and is thin enough to conform, but hard enough to prevent entrainment of toner particles. A dielectric filler adjusts both the capacitance and the hardness of the belt. This allows a single thin belt to serve as the imaging element, i.e., as the latent and developed image carrier, as well as the element which transfers and fuses toner to a print. A duplex system employs two belt-imaging members which each travel over one of a pair of opposed elastic pressure rollers to deposit a two-sided image on a sheet.
Buchan William R.
Caley Wendell J. Jr.
Gilmore Mark A.
Hudson David M.
Moore Robert A.
Buchan William R.
Caley Wendell J. Jr.
Delphax Systems
Gilmore Mark A.
Hudson David M.
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