Title:
媒体端部検出装置及び画像形成装置
Document Type and Number:
Japanese Patent JP3753126
Kind Code:
B2
Abstract:
An image-forming device includes a media sensor having a light-emitting element and a light-receiving element for detecting edge positions of a paper based on values outputted from the light-receiving element as the target detection area of the media sensor is moved in relation to the paper. The value of a current to be supplied to the light-emitting element for edge detection is determined in the following manner. First, the media sensor is moved to the center of the paper-conveying path (S 110 ). Then, the paper is conveyed to a prescribed position (S 120 -S 150 ). Next, the value of the current that should be supplied to the light-emitting element (light amount adjusting value) in order that output from the light-receiving element will reach a desired value is determined at a position A on the paper at which the target detection area of the media sensor is being presently located (S 160 , S 170 ). The target detection area is subsequently moved to a position B and a position C, while repeating the process to determine the light amount adjusting value (S 180 -S 230 ). Finally, the paper edge detecting current is set to the smallest of the light amount adjusting values determined at positions A-C (S 240 ).
Inventors:
Tatsuya Sato
Application Number:
JP2002348269A
Publication Date:
March 08, 2006
Filing Date:
November 29, 2002
Export Citation:
Assignee:
Brother Industries, Ltd.
International Classes:
B41J2/01; B65H7/14; B41J11/00; B41J11/42; B41J29/38
Domestic Patent References:
| JP7179248A | ||||
| JP5032026A |
Attorney, Agent or Firm:
Tsutomu Adachi
Katsunori Muto
Katsunori Muto