Title:
TWO-WAY NON-CLUTCH FILM SHIFTER
Document Type and Number:
Japanese Patent JPS58162456
Kind Code:
A
Abstract:
A bi-directional film transport device includes an upper and lower plate member having a separation gap between a first and second pair of drive rollers, the bytes of which are positioned adjacent the gap. A single drive motor is rigidly rotationally coupled to drive the first and second pair of drive rollers and the plate members function to eliminate the tendency of the film to buckle, which in turn maintains the film in the proper plane of focus. As a result of this simple arrangement, complex clutch mechanisms which are otherwise employed to maintain tension during bi-directional operation have been eliminated. Side walls coupled between the plates parallel to the path of film travel prevent skewing of the film driven by the short low inertia high speed drive rollers.
Inventors:
HARII JIYON HAREUIN
Application Number:
JP3569083A
Publication Date:
September 27, 1983
Filing Date:
March 04, 1983
Export Citation:
Assignee:
ITEK CORP
International Classes:
B65H20/04; B41B21/32; B65H23/02; G03B1/32; G03B1/42; (IPC1-7): B65H17/22; B65H23/02
Attorney, Agent or Firm:
Ryoji Kawase