Isothermalizing member for a printing machine

Details Isothermalizing member for a printing machine Isothermalizing member for a printing machine

1995-10-31

1997-11-18

Royer, William J.

Electrophotography

Internal machine environment

Temperature

219216, 219469, 399 96, 399222, 399320, G03G 2120

Patent

active

056897677

ABSTRACT:
An apparatus for maintaining a uniform temperature along its axis by increasing the heat transfer efficiency. The apparatus uses a sealed chamber containing a substantially pure working fluid in a two phase (liquid and vapor) condition. The vaporization and condensation of the fluid increases the heat transfer efficiency and tends to equalize temperature gradients in a body in contact with the apparatus. The apparatus is utilized in various locations in an electrophotographic printing machine and can be used as a pressure roll for a heat and pressure fuser, a support or drive roll for a photoreceptive member, a support member for a photoreceptor and a heat sink for a developer housing.

REFERENCES:
patent: 4091264 (1978-05-01), Sarcia
patent: 4172976 (1979-10-01), Namiki et al.
patent: 4229644 (1980-10-01), Namiki et al.
patent: 4284875 (1981-08-01), Namiki et al.
patent: 5089857 (1992-02-01), Xydias
patent: 5119142 (1992-06-01), Swapceinski et al.
patent: 5426495 (1995-06-01), Sawamura et al.

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