Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2006-07-07
2008-09-09
Chen, Sophia S (Department: 2852)
Electrophotography
Image formation
Photoconductive member
C399S162000
Reexamination Certificate
active
07424251
ABSTRACT:
The invention provides a film driving apparatus in which no adverse effect is caused by a change in the circumferential length of a film even if there arises the change in circumferential length of the film due to environmental fluctuation. In the film driving apparatus, an endless film1supported by a driving roller2, a film support roller4and a skew correction roller3is rotated in a predetermined direction by the rotation of a driving roller2. The skew correction roller3has a structure in which one end thereof is movable with the other end as a fulcrum. The movement trajectory of the movable end portion of the skew correction roller3is an elliptic trajectory not causing any change in the circumferential length of the film1.
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Sawahata Sho
Watanabe Takeshi
Yamazaki Akihiko
Chen Sophia S
Ricoh Printing Systems Ltd.
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