Abrading – Precision device or process - or with condition responsive... – By optical sensor
Reexamination Certificate
2007-10-02
2011-11-01
Nguyen, Dung Van (Department: 3723)
Abrading
Precision device or process - or with condition responsive...
By optical sensor
C451S008000, C451S044000, C451S311000
Reexamination Certificate
active
08047896
ABSTRACT:
The present invention provides a polishing apparatus and a polishing method capable of calculating outside diameters of rolls of a polishing tape on a polishing-tape supply reel and a polishing-tape recovery reel and capable of calculating a remaining amount of the polishing tape and a consumption of the polishing tape from the outside diameters of the rolls. This polishing apparatus includes a polishing-tape supply reel (46), a polishing head (44), a polishing-tape drawing-out mechanism G1, and a polishing-tape supply and recovery mechanism (45) configured to recover the polishing tape (43) from the polishing-tape supply reel (46) via the polishing head (44). The polishing-tape supply and recovery mechanism (45) includes a motor Mb adapted to apply a torque to the polishing-tape supply reel (46) so as to exert a predetermined tension on the polishing tape (43) traveling through the polishing head (44), and a rotation angle detector REa adapted to detect a rotation angle of the polishing-tape supply reel (46).
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International Search Report mailed Dec. 25, 2007 for International Application No. PCT/JP2007/069641.
Ito Kenya
Kusa Hiroaki
Seki Masaya
Takahashi Tamami
Ebara Corporation
Nguyen Dung Van
Wenderoth , Lind & Ponack, L.L.P.
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