Method for producing scale for detecting conveyance rotation...

Details Method for producing scale for detecting conveyance rotation... Method for producing scale for detecting conveyance rotation...

2005-04-26

2005-04-26

Nguyen, Thinh (Department: 2853)

Incremental printing of symbolic information

Ink jet

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Reexamination Certificate

active

06883891

ABSTRACT:
Disclosed is a method for producing a scale for detecting conveyance rotation angle of a conveying roller, wherein the part tolerances of an encoder for use in the conveying roller, the offset at the time of assembly, etc. are canceled to thereby perform high accuracy detection. The conveyance outer peripheral portion of the conveying roller is chucked (held), and the conveying roller is rotated by a motor. The rotation angle is detected by a reference encoder, and rotation angle allotment is effected through magnetization on the basis of the output of the reference encoder to arrange N- and S-poles by varying current direction of a magnetizing head.

REFERENCES:
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patent: 5021809 (1991-06-01), Abe et al.
patent: 5450106 (1995-09-01), Morioka et al.
patent: 5678144 (1997-10-01), Osaki et al.
patent: 6189990 (2001-02-01), Youn

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