Photocopying – Projection printing and copying cameras – Detailed holder for original
Reexamination Certificate
2007-08-21
2007-08-21
Mathews, Alan A. (Department: 2851)
Photocopying
Projection printing and copying cameras
Detailed holder for original
C355S053000, C310S010000
Reexamination Certificate
active
11434104
ABSTRACT:
A stage device for positioning an object. The stage device includes a slider for holding the object, a driving section for driving the slider with respect to a base, wherein the slider is supported in a suspended state on the base by a static-pressure bearing and a pressurizing magnet, and a countering section for holding the driving section and canceling a reaction force that acts upon the driving section. The countering section is supported in a suspended state on the base by a static-pressure bearing and a pressurizing magnet. Also, the relation Fm=Fa+Fg is satisfied, wherein Fm represents the attraction force of the magnet, Fg the weight of the stage, and Fa the pressure produced by the static-pressure bearing.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Mathews Alan A.
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