Document Type and Number:
Japanese Patent JPS5414495
Kind Code:
B1
Abstract:
A film magazine carries an endless film which is wrapped about a hub portion on a flange extending at a right angle to the axis of the hub, the hub having a first cylindrical portion in contact with the inntermost convolution of the film near the flange, and having a tapered hub portion remote from the flange. A rib within the cover of the film magazine which maintains the film convolutions on the hub in proper position is recessed at the point where it overlies the innermost film convolution and a portion of the tapered surface portion, the rib being positioned circumferentially at the point where the innermost convolution leaves the hub, the depth of the recess within the rib and the demarcation between the tapered portion of the hub and the cylindrical portion of the hub is approximately equal to the thickness of the film to insure edge contact only between the innermost convolution and the point of removal from the hub and the tapered surface portion of the hub and the rib respectively.
Application Number:
JP2983769A
Publication Date:
June 07, 1979
Filing Date:
April 17, 1969
Export Citation:
International Classes:
G03B21/32; G11B23/07; G03B23/02; (IPC1-7): G03B23/02; G11B23/06