Photocopying – Projection printing and copying cameras – With temperature or foreign particle control
Reexamination Certificate
2007-05-01
2007-05-01
Rutledge, D. (Department: 2851)
Photocopying
Projection printing and copying cameras
With temperature or foreign particle control
C355S067000, C355S071000
Reexamination Certificate
active
10953205
ABSTRACT:
Disclosed is cooling technology in one aspect of which is a cooling system for cooling an optical member including a material having a linear expansion coefficient that becomes equal to zero at a predetermined temperature, the cooling system including a temperature detecting unit for detecting a temperature of a detection-subject portion of the optical member, a cooling unit for cooling a cooling-subject portion of the optical member, and a control unit for controlling the cooling unit on the basis of the detection by the temperature detecting unit.
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Hara Shin-ichi
Yokota Hideo
Canon Kabushiki Kaisha
Morgan & Finnegan L.L.P.
Rutledge D.
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