JPH07290679A - Cassette for roll-like photosensitive material - Google Patents

Abstract

PURPOSE:To obtain a cassette for a roll-like photosensitive material which has dot leaders over the entire length of a folding rule of upper and lower folding surfaces for forming a slit-like outlet thereby to draw the material by a predetermined drawing force. CONSTITUTION:Dot leaders are formed at second and third folding rules 11a, 11b, and a lower part of an outlet is formed. Thus, properties in which a shape of the outlet is easily deformed by an external force, and when the external force is removed, it is immediately returned to its original shape are provided. Even if a winding diameter of a roll-like photosensitive material 3 is reduced and a pressure from the material 1 is applied to a lower starting end folding surface 8, the lower part of the outlet is deformed in response to its pressure so that a contact angle theta of the surface 10 with the material l becomes equal to an angle theta' of the surface 8 with a surface 12. Thus, since the material 1 is drawn substantially linearly, a stable drawing force is held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll-shaped photosensitive material cassette.

[0002]

2. Description of the Related Art A cassette for a roll-shaped photosensitive material used in a typesetting machine includes a metal cassette provided in the typesetting machine and a disposable cassette in which a body member is made of cardboard sheet, paperboard and the like, and a side plate is made of plastic. is there.

The present invention relates to the latter cassette,
The structure of a conventional photosensitive material outlet in this type of cassette is shown in FIGS. FIG. 2 is a side sectional view of the drawer opening of the present invention and the conventional cassette, FIG. 4 is a partially disassembled perspective view showing the entire structure of the cassette, and FIG. 5 is a conventional cassette in which the roll diameter of the roll-shaped photosensitive material is reduced. FIG. 6 is a side sectional view of the drawer port at the time, and FIG. 6 is an inverted perspective view of the lower part of the drawer port of the conventional cassette.

In FIG. 4, the cassette is formed by fitting plastic cap type side plates 4 and 4'into a body member 6 made of paper. The photosensitive material 1 loaded in advance in the cassette is wound around it. A roll of photosensitive material by biting the core 2 with the core holding shafts 5 and 5'of the side plates 4 and 4 '(however, the holding shaft 5'of the side plate 4'is not shown in the figure). Reference numeral 3 indicates a structure in which the photosensitive material is suspended in the cassette so that the photosensitive material can be pulled out from an outlet 9 formed in the width direction of the cassette.

2, 5 and 6, in the conventional cassette, the end surface of the body member 6 is folded along the ruled lines 11a and 11b two or more times, and the final end folding surfaces 14 and 15 are attached to the inner surface of the body member with an adhesive or the like. It was fixed with and the outlet was formed.

However, as shown in FIG. 5, in the conventional draw-out port, as the roll diameter of the roll-shaped photosensitive material 3 becomes smaller, the surface 10 adjacent to the lower start-end folding surface and the photosensitive material 1 are made.
There is a problem in that the contact angle θ with and the pulling force (drawing force) applied when the photosensitive material 1 is pulled out are increased.

Further, even when the rolled photosensitive material has a large winding diameter when the cassette is first used, a similar problem occurs in the upper outlet.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a roll-shaped photosensitive material cassette which allows the photosensitive material to be drawn out with a constant pulling output.

[0009]

The above object of the present invention is to provide a roll-shaped photosensitive material cassette in which both upper and lower end surfaces of a body member are folded inside to form slit-shaped outlets in the width direction of the rolled photosensitive material. A roll-shaped photosensitive material cassette characterized in that it has a lead rule over the entire length of a folding ruled line after the second folding ruled line on the upper folding surface and the lower folding surface forming the slit-shaped outlet. It was

[0010]

EXAMPLES The present invention will be described in detail below with reference to examples.
FIG. 1 is a side cross-sectional view of the drawer when the winding diameter of the photosensitive material is small in an example of the cassette of the invention, and FIG. 3 is an inverted perspective view of the bottom of the drawer of the invention.

In FIG. 3, the second and third folding ruled lines 1
Lead ruled lines were formed on 1a and 11b to form the lower part of the outlet. As a result, the shape of the outlet is easily deformed by the force from the outside, and when the force from the outside is removed, the shape of the outlet is immediately returned to the original shape.

Therefore, as shown in FIG. 1, even if the roll diameter of the roll-shaped photosensitive material 3 becomes small and the pressure from the photosensitive material 1 is applied to the lower starting end folding surface 8, the lower part of the outlet is deformed according to the pressure. However, the contact angle θ between the surface 10 and the photosensitive material 1 becomes equal to the angle θ ′ between the surface 8 and the surface 12, and the photosensitive material 1 is pulled out in a substantially straight line, so that a stable pulling force is maintained. You can

Further, when the photosensitive material is not pulled out, no pressure is applied to the surface 8, so that a force in the direction A acts to restore the original shape.

The above-mentioned operation is the same as above in the upper part of the drawer, and is also applied when the roll-shaped photosensitive material has a large winding diameter at the beginning of use of the cassette.

Deformation and resilience of the outlet with respect to an external force can be adjusted by the material and the method of putting the lead creases on the folded creases. As a material, the basis weight of the front and back liners is generally large, and kraft pulp is included. It is preferable to use long fibers.

The lead ruled line is prepared by punching with a lead blade in which a cutting edge and a scoring line are integrated. The ratio of the lengths of the cut lines and the creases is preferably 1: 2 to 1: 5.

Further, the depth of the creases of the corrugated corrugated cardboard also affects the deformation and the restoring property of the drawer,
It is preferable to determine it based on the material of the cardboard.

[0018]

In the conventional cassette, the pulling force of the photosensitive material changes as the photosensitive material is used and consumed.
The cassette of the present invention can always maintain a stable pulling output.

[Brief description of drawings]

FIG. 1 is a side sectional view of an outlet when a winding diameter of a photosensitive material is reduced in a cassette of the present invention.

FIG. 2 is a side sectional view of an outlet of a cassette of the present invention and a conventional cassette.

FIG. 3 is an inverted perspective view of the lower portion of the drawer of the cassette of the present invention.

FIG. 4 is a partially disassembled perspective view showing the entire configuration of the cassette.

FIG. 5 is a side cross-sectional view of a drawer when a winding diameter of a photosensitive material is reduced in a conventional cassette.

FIG. 6 is an inverted perspective view of a lower portion of a conventional cassette outlet.

[Explanation of symbols]

 1 Photosensitive Material 2 Core 3 Photosensitive Material Roll 4, 4'Side Plate 5 Core Holding Shaft 6 Body Member 7 Upper Starting End Folding Surface 8 Lower Starting End Folding Surface 9 Photosensitive Material Exit 10 Surface Adjacent to Lower Starting End Folding Surface 11a 2nd folding ruled line 11b 3rd folding ruled line 12 Lower front surface 13 Upper front surface 14 Upper final edge folding surface 15 Lower final edge folding surface 16 Cutting rule 17 Crease ruled line Angle of contact between θ 1 and 10 θ ′ 8 and 12

Claims (1)

[Claims] 1. A roll-shaped photosensitive material cassette in which both upper and lower end surfaces of a body member are folded inside to form slit-shaped outlets in the width direction of the roll-shaped photosensitive material, and an upper fold for forming the slit-shaped outlets. A roll-shaped photosensitive material cassette characterized in that it has a lead rule over the entire length of the folding ruled lines on the surface and the second folding ruled line of the lower folding surface.