Supply apparatus for color-bearing film
AssigneeE. I. Du Pont de Nemours and Company
InventorsHelmut G. Sandner, Peter Ulrich, Robert N. Francois, Michael Hawkins
Life of this patent
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Abstract
A color film supply apparatus has a supply roll holding unused color film. The apparatus simplifies the handling of the color film. For this purpose, the supply roll and a waste roll to hold used film are supported in a cassette-type, portable housing in a manner such that a length of the color film extends between the supply roll and the waste roll and the housing has, between the supply roll and the waste roll, an opening that is at least as wide as the color film and permits free access to both sides of the color film. In addition, a straight edge is located in the section of the housing containing the waste roll and deflects the travel path of the color film.
Claims19
Color-bearing film supply apparatus, comprising:
- a supply roll for holding unused color film;
- a waste roll for holding used color film;
- a cassette-type, portable housing supporting the supply roll and the waste roll, such that when one end of an elongated sheet of the color-bearing film is wound on the supply roll and another end of the elongated sheet is wound on the waste roll, a length of the color-bearing film extends between the supply roll and the waste roll;
- the housing having between the supply roll and the waste roll an opening at least as wide as the color-bearing film which permits free access to both sides of the color-bearing film;
- a straight edge that operates on the length of the color-bearing film and deflects a travel path of the color-bearing film;
- and
- a deflection device that operates on the length of the color-bearing film and controls the deflection of the travel path of the color-bearing film independent of the amount of used color film held on the waste roll.
Color-bearing film supply apparatus, comprising:
- a supply roll for holding unused color film;
- a waste roll for holding used color film;
- a cassette-type, portable housing supporting the supply roll and the waste roll, such that when one end of an elongated sheet of the color-bearing film is wound on the supply roll and another end of the elongated sheet is wound on the waste roll, a length of the color-bearing film extend between the supply roll and the waste roll;
- the housing having between the supply roll and the waste roll an opening at least as wide as the color-bearing film which permits free access to both sides of the color-bearing film;
- a straight edge that operates on the length of the color-bearing film and deflects a travel path of the color-bearing film;
- a color film feed guide having a bar extending perpendicularly to the direction of travel of the color film, the bar supported on both sides in first rotatable gears each supported rotatably in the housing, whereby axes of the first gears lie in a straight line and an actuating device is provided to rotate the first gears synchronously;
- and
- means for shifting the feed guide between two positions to change the path of the color film at least in the area of the opening.
Dependencies are inferred from the claim text.