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
Estimating the term…
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.
Claims10
A method for producing a scale for detecting a conveyance rotation angle of a conveying roller provided in an ink-jet recording apparatus adapted to perform recording on a recording medium conveyed while being held between the conveying roller and a driven roller by using recording means, which forms an image on the recording medium by discharging ink onto the recording medium, 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 conveying roller integrated with the conveyance angle detection pattern writing member, and performing rotation angle allotment on the conveyance angle detection pattern writing member to form a scale for detecting the conveyance rotation angle.
An ink-jet recording apparatus comprising conveying means having a conveying roller and a pinch roller in close contact with said conveying roller, and detecting means for detecting a rotational angle of said conveying means, wherein a recording medium conveyed by said conveying means is recorded by recording means for discharging ink on the recording medium to form an image, said recording apparatus being manufactured by 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 conveying roller integrated with the conveyance angle detection pattern writing member, and performing rotation angle allotment on the conveyance angle detection pattern writing member to form a scale for detecting the conveyance rotation angle.
A method for producing a scale for detecting a 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 pinch roller by using recording means which forms an image on the recording medium by discharging ink on the recording medium, the method comprising the steps of:
- integrating the conveying roller with a scale member coaxially mounted with the conveying roller;
- and
- holding an outer peripheral portion of the conveying roller integrated with the scale member, and performing rotation angle allotment on the scale member to form a scale for detecting the conveyance rotation angle.
Dependencies are inferred from the claim text.