Title:
【発明の名称】ウエブ・ロール用の光学的/機械的な回転検出機構
Document Type and Number:
Japanese Patent JP2892835
Kind Code:
B2
Abstract:
An optical-mechanical rotation sensing mechanism for a web-roll rotatably mounted within a cartridge comprises a flange on the web-roll, activating means on the flange, and an optical sensor, outside the cartridge, including a beam of light for sensing incremental rotation of the flange and web-roll. A movable flag on the cartridge exterior actuates the optical sensor in response to movement of the flag between a first position, in which the light beam is interrupted, and a second position in which the light beam is uninterrupted. A coupling means, including a light-shield hood, couples the flange activating means to the flag for moving the flag between its first and second positions.
Inventors:
ROBAATOSON JEFURII CHAARUZU
Application Number:
JP50743491A
Publication Date:
May 17, 1999
Filing Date:
April 03, 1991
Export Citation:
Assignee:
IISUTOMAN KODATSUKU CO
International Classes:
G03B1/60; G03B17/00; G03B27/32; G03B27/58; (IPC1-7): G03B1/60; G03B17/00; G03B27/32
Domestic Patent References:
| JP61132938A | ||||
| JP6122024U |
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)