Title:
SHEET CARRYING DEVICE AND OVERHEAD PROJECTOR PROVIDED WITH THE SAME
Document Type and Number:
Japanese Patent JP3205606
Kind Code:
B2
Abstract:
PURPOSE: To provide a sheet carrying device capable of uniformly winding plural long sized carrying members round one winding means without horizontal slippage.
CONSTITUTION: A left side motor 8 is started to drive a pair of left rollers 6c and 6d and a carrying film 2 and a pressing film 3 are carried and wound round a common roll 5a. When the pressing film 3 is sagged by a specific amount, a sag detecting sensor 40 detects the sag, an electromagnetic clutch is turned on for a fixed time to brake a pressing roll 4b and the pressing film 3 is pulled to suppress the sag in a specified range. Thus, the films 2 and 3 can uniformly be wound round the common roll 5a without the horizontal slippage.
Inventors:
Yoshihiko Kitahara
Kimiaki Hayakawa
Kimiaki Hayakawa
Application Number:
JP28114492A
Publication Date:
September 04, 2001
Filing Date:
September 28, 1992
Export Citation:
Assignee:
Canon Aptex Inc.
Canon Inc
Canon Inc
International Classes:
G03B21/132; (IPC1-7): G03B21/132
Domestic Patent References:
| JP2136843A | ||||
| JP60164734A | ||||
| JP453941A | ||||
| JP4264436A | ||||
| JP4288534A | ||||
| JP5113602A | ||||
| JP440232U | ||||
| JP2125198U |
Attorney, Agent or Firm:
Shukichi Nakagawa (1 person outside)