Method for producing scale for detecting conveyance rotation angle of conveying roller and recording apparatus using the scale
AssigneeCanon Kabushiki Kaisha
InventorTakashi Nojima
Life of this patent
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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.
Claims44
A method for producing a scale provided coaxially with a conveying roller and adapted to detect conveyance rotation angle, the method comprising the steps of:
- holding a recording medium conveyance outer peripheral portion of the conveying roller, and effecting rotation angle allotment for recording medium conveyance on the conveying roller to thereby form a scale for detecting conveyance rotation angle.
A method for producing a scale for detecting conveyance rotation angle of a conveying roller provided in a recording apparatus adapted to perform recording on a recording medium conveyed while being held between the conveying roller and a driven roller by using a recording means, the method comprising the steps of:
- holding a recording medium conveyance outer peripheral portion of the conveying roller, and effecting rotation angle allotment for recording medium conveyance on the conveying roller to thereby form a scale for detecting conveyance rotation angle.
A method for producing a scale provided coaxially and integrally with a conveying roller and adapted to detect conveyance rotation angle, the method comprising the steps of:
- integrating the conveying roller with a conveyance angle detection pattern writing member coaxially mounted with the conveying roller;
- and
- holding a recording medium conveyance outer peripheral portion of the conveyance roller integrated with the conveyance angle detection pattern writing member, and performing rotation angle allotment on the conveying roller to form a scale for detecting conveyance rotation angle.
A method for producing a scale for detecting conveyance rotation angle of a conveying roller provided in a recording apparatus adapted to perform recording on a recording medium conveyed while being held between the conveying roller and a driven roller by using a recording means, the method comprising the steps of:
- integrating the conveying roller with a conveyance angle detection pattern writing member coaxially mounted with the conveying roller;
- and
- holding a recording medium conveyance outer peripheral portion of the conveyance roller integrated with the conveyance angle detection pattern writing member, and performing rotation angle allotment on the conveying roller to form a scale for detecting conveyance rotation angle.
Dependencies are inferred from the claim text.