JPH11231471A - Light shielding package for roll of photosensitive material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package for the roll of a photosensitive strip material by which a photosensitive material can be smoothly drawn out a small quantity at a time and the reliable reverse winding of the roll drawn out in a small quantity at a time is given after the roll of the photosensitive strip material is loaded in a cooperation device such as an exposure device. SOLUTION: This package is provided with substantially straight light shielding end part covers 35 and 45 for the respective surfaces 30 and 40 of the ends parts of the roll and a light shielding circumferential cover 12 fitted to the covers 35 and 45 and the coiled strip material so as to cover the outermost part of the coiled material. The respective covers 35 and 45 are constituted by including soft disks 31 and 41 and hard disks 32 and 42. The disks 31 and 41 are positioned between the surfaces 30 and 40 and the disks 32 and 42. Then, the buckling value B2 of the hard disk is larger than the buckling value B1 of the soft disk.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a light-sensitive material wound on a support core.
light-tightly rolls of ve strip materials
packaged roll). More particularly, the invention relates to a dispenser cassette (disp)
sensor

[0002] After the loading of the cassette, a suitable cooperating apparatus is used.
s), generally an exposure apparatus such as an imagesetter (i
daylight loading of a dispenser cassette that can be placed in a magesetter or COM (computer output microfilm) system.
a role intended to be loaded.

[0003]

BACKGROUND OF THE INVENTION Light-tightly packaged rolls of photosensitive strip material, for example, photographic film or paper, polyester printing plates or other rolls of photosensitive strip material, are wound around a hollow support core. . Such a packaged roll provides a light-tight flex for each end surface of the roll.
ible) end-covers, each end-cover having a central opening and light-tightly attached to the corresponding end of the core, light-tight flexible end-cover, and coiled The outermost part of the roll-to-roll attached to the strip material and
Light-tight flexible ci over the n-volume
rcumferential cover). Peripheral area of the end cover
reas) and the side end of the peripheral cover (side end)
s) is a light-shielding wrap (light-tight w)
wrapping and / or moisture-proof wrapping
Are light-tightly fitted to each other to obtain

[0004] The flexibility of the end cover causes several problems. First, dispensing the photosensitive material (disp
When ending, the cover unwinds (unwind)
ing) may press the photosensitive material, which varies the frictional force between the end cover and the photosensitive material. Due to the fluctuating friction, the photosensitive material passes through the exposure device,
It is not transported smoothly and is transported with a shock.
If the image is exposed on the photosensitive material during transport, image quality suffers from transport non-smoothness. This problem has since been referred to as “unsmooth transport”.
ort ") problem.

[0005] Second, the flexible end cover may bend inward toward the core. Thus, it was dispensed (d
As the photosensitive material is rewound on the roll, the flexible end cover is caught between the windings of the roll. This can cause damage to the photosensitive material. Rewinding the photosensitive material will hereinafter be referred to as "reverse winding".

[0006] EP-A-07866.
No. 95 (EP-A-0786695) discloses a light-tight package for rolls, in which each end cover consists of an opaque flexible disc, on the outside of which a thin polymer layer of, for example, 30 to 50 μm is extruded. Has been disclosed.
After extrusion, the polymer layer cools and shrinks, inducing stress in the flexible disk, with the result that the flexible disk is bent outward, ie, toward the extruded polymer layer and away from the roll. The flexible disk is welded to the perimeter cover and welded to the core.

While this package solves the problems associated with non-smooth transport and reverse winding described above, it does have some disadvantages. First, it is difficult to control the post-extrusion cooling and shrinking process. as a result,
The magnitude of the induced stress and deformation of the flexible disk is
Can vary widely. This has a detrimental effect on the reliability of smooth transport during rewinding and unwinding. Second
In addition, an extra layer of heat resistant lacquer is required on the extruded polymer layer to prevent the polymer layer from melting when the flexible disk is welded to the surrounding cover and core.

[0008] European Patent Application Publication No. 07795
No. 41 (EP-A-0779541) solves these disadvantages to some extent. It comprises a light-tight package for a roll, where each end cover consists of an opaque tearable flexible disk and a rigid disk, the rigid disk being located between the flexible disk and the end surface of the roll. Has been disclosed. The rigid disc has an outer diameter smaller than or equal to the outer diameter of the roll, and the flexible disc has a larger outer diameter. The outer part of the flexible disc is folded over the hard disc (fold
ded) and attached to the peripheral cover of the roll by adhesive tape. The adhesive tape and the flexible cover are tearable, and the peripheral cover includes a portion of the tape and flexible disk that is adapted to initiate a tear.

However, this package also offers some disadvantages. The first drawback is the presence of a tearable adhesive tape, and thus the risk of contamination of the photosensitive strip material and the dispensing device adhesive.
Another disadvantage is that the flexible disk must be folded over the perimeter cover, which requires an extra step in the packaging process. Furthermore,
In order to initiate a tear in the tape and flexible disk, the perimeter cover must have a complex shape, several shapes being exemplified in this patent application.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for a roll of the type described above in which the strip material from a roll of the type described above can be dispensed without shock after its loading into a cooperating device. The object is to provide a light-shielding package.

It is a further object of the present invention to provide a reliable reverse winding of a dispensed or partially dispensed roll in a cooperating device.

It is another object of the present invention to provide a package having a limited size such that the package easily fits a wide range of existing dispenser cassettes and cooperating devices.

Yet another object of the present invention is to provide a solution to the above disadvantages.

[0014]

SUMMARY OF THE INVENTION The above-mentioned object is achieved by a light-shielding package having the specific features described in claim 1. Particular features of preferred embodiments of the invention are set out in the dependent claims.

[0015] Further advantages and embodiments of the present invention will become apparent from the following description.

A "substantially straight" end cover has a side surface that lies in a substantially planar plane.
ces), i.e. the maximum distance between the side surface and the corresponding flat surface is less than 2 mm,
Preferably less than 1 mm, even more preferably 0.1 mm.
Smaller than 5 mm. More precisely, the disk-like end cover is delimited by four-usually circular-curves. The first and second curves are inner curves delimiting the center opening of the end cover, where the end cover is attached to the core. The third and fourth curves are outer curves that form the peripheral contour of the end cover. The first and third curves represent the inner side surface of the end cover (interior s).
ide surface), the second and fourth
Curves are exterior side s
The end cover itself is between the inner side surface and the outer side surface. The inner side surface is the surface closest to the roll. The inner flat surface is defined as a flat surface passing through the first inner curve, and the outer flat surface is a flat surface passing through the second inner curve. The maximum vertical distance of any point on the inner side surface to the inner flat surface should be less than 2 mm, preferably less than 1 mm, more preferably less than 0.5 mm. The same conditions apply to any point on the outer side surface relative to the outer flat surface. The end cover may be folded margins, for example, an inner lip that can be squeezed into the end of the core.
rimmargins or outermargins that can be sealed to a peripheral cover, for example, such end covers are such that the end covers are substantially straight except for the rim.
If t), it is substantially straight.

The "buckling value" of the end cover (bucklin)
g value ") indicates a value representing the resistance of the end cover to buckling, where a higher buckling value corresponds to a higher resistance to buckling. The buckling value is the shape of the end cover and the Depends on the material being composed, "buckling value"
A broader definition of will be given later.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS The invention is described below by way of example with reference to the accompanying drawings, in which: FIG.

FIG. 1 shows an exploded view of an embodiment of a light-tight package in which a roll 11 of a photosensitive strip material 15 is wound on a preferably hollow support core 10. The light-shielding flexible peripheral cover 12 is, for example, not torn (non-te
Attached to the coiled strip material 15 by an adhesive tape 13. Two light-blocking end covers 35 and 45 are light-blocked on corresponding ends of the core. Each of the end covers 35, 45 is provided with a flexible disk 31, 41 and a rigid disk 3,
2, 42. The flexible disk 31 is disposed between the end surface 30 of the roll and the rigid disk 32, and the flexible disk 41 is disposed between the end surface 40 of the roll and the rigid disk 42. In a preferred embodiment, the flexible disks 31, 41 have lips 33, 43 at their inner diameter, which are squeezed into the ends of the core and sealed to the core. In another preferred embodiment, the flexible disks 31, 41 and the rigid disks 32, 42 all have a lip at their inner diameter, the lip 33 coincide with the lip 34, and the lip 43 fits the 44. The mating, mating lip is pressed into the end of the core and sealed thereto.

[0020] The peripheral cover 12 has a width that exceeds the rolled strip material. A perimeter cover is wrapped around the coiled strip material to shield the roll of strip material from light so that the perimeter cover is the outermost of the outer wrap of the strip material.
cover and stably attached to the end cover. EP-A-0739916 (EP-A-07399)
As disclosed in 16), the package can have a leader not shown in FIG. 1, which can be attached to or part of the perimeter cover, and Leader dispenses strip material into dispenser cassette slot
Can be screwed into. Preferably, the leader is a slightly reduced width extension of the perimeter cover, ie, an extension not attached to the end cover. Preferably,
The leader has a tapered shape.

FIG. 2 shows the roll package described. Two rigid flanges 51, 52 having hubs that engage the corresponding core openings support the roll when it is placed in a rectangular cardboard box for storage and shipping. Instead of the flange, other support means known in the art can be used, for example, a shell having an inner semi-cylindrical surface that supports the outer roll surface without supporting the end cover. Optionally, the roll package can be wrapped in a dust-proof foil before placing it in the box.

As disclosed in the preamble, each end cover includes flexible disks 31, 41 and rigid disks 32, 42.
Comprising. In a preferred embodiment, the flexible disk 3
Reference numerals 1 and 41 are light-shielded by the peripheral cover 12. The hard disks 32 and 42 have buckling values (buck) of the end disks.
added to increase the ling value.

The end cover is wound on a roll (windin).
gs), reverse w
We have found that the problem with indices is due to buckling effects. The end cover is thin (sle
nd), ie, their thickness is small relative to their diameter. Furthermore, they are made from materials having a low modulus of elasticity. Thus, if too much compressive force is exerted on the end cover, the end cover will not break because it will be able to exceed its yield strength, but will buckle, i.e., deflect laterally, thus rewinding it. (Re
wound) may be caught between windings of the photosensitive strip material.

The above-mentioned compressive force can be caused by the strip material contacting the end cover. Usually, the strip material is centered and rewound with respect to the end cover of the roll, so that there is a small space on the left hand side between the left side of the strip and the left end cover, and also a small space on the right hand side There is. However, the strip material may, for example, have a change in the torque of the motor driving the roll, a cooperating appaper.
Due to small alignment errors of the rollers leading the strip through the ratus, the center position may be deviated left or right during reverse winding. Such a bias may cause the strip material to contact the end cover and exert a compressive force on it in the direction of the core of the roll.

The magnitude of the compression force depends on the characteristics of the cooperating device. The effect of the force depends on the shape and material properties of the end cover, and also on the shape and material properties of the strip material.

Information on buckling can be found in books on the theory of material strength (eg, “Standard Handb.”
oak for Mechanical Engineering
ers "by Baumeister et al, M
cGraw-Hill, right edition
n, chapter 5 “Strength of M
materials, p. 5-40 ff). Thin steel columns will fail by buckling when critical loads are reached. Critical loads F
Is Euler's equation F = k * E * I / L ^{2 In the} equation, E is the elastic modulus (Pa) of the column material, I is the moment of inertia (m ⁴ ) of the cross section of the column, and L is the column Length (m) and k is a constant. The rectangular ^{cross-section, I = b * h 3/} 1
2. where b is the width (m) of the cross section and h is the height (m) of the cross section (the width b is the neutral line of the cross section (neutral)
line).

For the disk-like shape, we have Euler's equation: F = k '* C * s ³ / φ = k' * B where B = C * s ³ / φ where C is the material Is constant (Pa), s is the thickness of the disc (m), φ is its diameter (m), and k ′ is found to be a constant. The plastic and metal, found _C = E compressio _n, a compressive elastic modulus of disk material, to be deformed. The value of _{E compr} ession is found for example in the materials sciences. Regarding buckling, we have C = 0.
It was found to be ³ kN / mm ² . If the disc also has an inner diameter, its effect on the buckling value B is negligible if the inner diameter is 70% or less of the outer diameter. The diameter φ in the formula of B is then considered to be equal to the outer diameter of the disk. As an example, an outer diameter of 100mm and 70m
For an end cover having an inner diameter of m, φ = 100 mm =
0.1 m. For disks having an inner diameter greater than 70% of the outer diameter, the buckling value is determined experimentally, as described in the Examples below.

[0028] In a preferred embodiment, the end cover is substantially straight. European Patent Application Publication No. 078
As mentioned above in the discussion of the shortcomings of EP-A-0 786 669, it is difficult to control the deformation of the bent end cover, which leads to the reliability of the reverse winding and the smoothness during unwinding. This can have a detrimental effect on transport reliability.

The end cover should be sufficiently rigid to resist without buckling the compressive forces that can be caused by the strip material contacting the end cover as described above, and the magnitude of these compressive forces The degree depends on the characteristics of the cooperating device. In a preferred embodiment, the buckling value of the end cover B>
0.05N, preferably B> 0.1N, more preferably B> 0.25N. When B is smaller, transport is not smooth and reverse winding may be unreliable in recently available cooperating devices for recently available strip material.

The stiffness of the disks 31, 41 or 32, 42 can be defined by their buckling values, and according to the invention, the buckling value B ₂ of the hard disks 32, 42 is determined by the flexible disks 31, 41. Is larger than the buckling value B _{1 of} .

One calculation of the buckling value of a disk is given in the following example.

In the method of manufacturing a packaged roll, the end cover is attached to the core and the peripheral cover in a preferred embodiment as described below. The end covers 35 and 45 shown in FIG. 1 are made of paper (for example, 70 g / m ² ),
Flexibility comprising a moisture-tight and light-tight heat-sealable foil, which may comprise a layer of aluminum (eg 9 μm thick), heat-sealable polyethylene with black pigment (eg 38 μm thickness) It comprises disks 31, 41. The core 10 preferably comprises a cardboard, but it may for example be made of plastic. Flexible disk 3
1, 41 have inner edges 33, 43 which are pressed into the end of the core 10 and heat sealed thereto, as disclosed in EP-A-0350093. The perimeter cover 12, which can be the same basic material as the flexible disc, is then fed toward the roll, and the rims of the perimeter cover are exposed to heat and pressure while the roll is slowly rotating. While gradually contacting the surrounding area of the flexible disc. The first wrap around the perimeter cover (first
During the combination, the polyethylene inside of the rim of the peripheral cover is sealed to the corresponding polyethylene inside of the flexible disk. One round and round winding (co
As the nvolu- tion is completed, the polyethylene inside of the rim of the peripheral cover is sealed outside the already sealed rim of the cover. The sealed portion of the perimeter cover preferably spans an angle of 360-720 degrees around the roll. The leader not shown in FIG. 1 extends freely from the finished package. For shipment, the leader can be attached to the underlying perimeter cover, for example, by a strip of adhesive tape 14 (FIG. 2). Overlap of the perimeter cover, preferably at an angle greater than 90-180 degrees, ensures a reliable light tight seal of the packaged roll. Although heat sealing is preferred, the end cover may be attached to the peripheral cover and core in other ways, such as, for example, by gluing, double-sided adhesive ribbon or similar interposition.

The peripheral cover and the end cover each comprise a thermoplastic layer, for example a polyethylene layer, so that the peripheral cover and the end cover can be attached to each other by heat sealing these layers.
d). The flexible disks most preferably comprise the materials described above, but they can also comprise vacuum deposited aluminum and other materials such as black polyethylene, polypropylene, etc. and a laminate of polyethylene terephthalate.

In another embodiment, the flexible disks 31, 41
The rims 33 and 43 are not provided. Instead, core 10
A plastic ring (not shown) that is heat-sealed at its extremes to the area of the inner diameter of the flexible disc
It has.

In a preferred embodiment, the hard disks 32, 4
2 is polyethylene terephthalate (thickness, for example, 100 μm)
m) and polyethylene (thickness, for example, 75 μm). In other embodiments, the hard disk can comprise other materials such as polycarbonate, polypropylene, polystyrene, acetate, and the like.

Preferably, each hard disk 32 or 42
Is laminated to the corresponding flexible disk 31 or 41. In another aspect, the corresponding rigid and flexible disks are co-extruded. The corresponding rigid and flexible disks can also be attached to each other in other ways, such as by an adhesive.

In a preferred embodiment, the hard disk is present in the package when it is shipped to the customer, but the hard disk may be provided, for example, by the customer in a package that includes only flexible disks and no hard disks. It can be added later. If a hard disk is added later, a sticky hard disk is preferred.

In a preferred embodiment, the outer diameter of the flexible disk is larger than the diameter of the roll, and the difference between the diameters is, for example,
It may be 5-15 mm, but may be larger, for example about 30 mm. The advantage is that deviations in roll diameter are covered with
That is, in practice, the diameter of the roll of rolled strip material may experience as high a deviation of 2 mm for a roll having a nominal diameter of 113 mm. These deviations are caused by small deviations in the thickness of the strip material, which small deviations are doubled by a large number of convolutions of the roll. In another aspect, the outer diameter of the end cover is less than or equal to the diameter of the roll.

Preferably, the flexible disk and the rigid disk have substantially equal outer diameters, ie the difference between their diameters is less than 2 mm, preferably less than 0.5 mm, more preferably 0.2 mm Less than. However, the outer diameter of the hard disk may be larger or smaller than the outer diameter of the flexible disk.

In a preferred embodiment, the inner diameter of the flexible disk is smaller than the inner diameter of the rigid disk, so that the flexible disk can comprise margins, which can be easily adjusted by automated equipment. It can be stuffed into the end and heat sealed to it. In other aspects, the inner diameter of the flexible disk may be equal to or greater than the inner diameter of the rigid disk. The end cover can be sealed to the core in some manner other than heat sealing as described above.

In another more preferred aspect, the flexible disk and the rigid disk have substantially equal inner diameters,
And a tight fitting rim (coi
nciding margins). These lips can be pressed into the end of the core, preferably by automated equipment, and heat sealed to it.

Loading a cassette with a roll package according to the invention, loading the cassette into a cooperating device and preparing it for use is no different from prior art roll packages, for example, EP-A-0 230 0057. No. (EP-A-0230057).

Although the embodiments disclosed above are preferred embodiments, the present invention is not limited to these embodiments.

Preferably, each end cover comprises two discs, and the end cover may comprise three or more discs.

Preferably, the core 10 is hollow, but it is solid, for example with a hollow end (sol
id) or completely complete.

In a preferred embodiment, the peripheral cover is mounted on a flexible disk, but the peripheral cover may be mounted on another disk that is part of the end cover. The perimeter cover is folded within the end of the core (f) as disclosed in EP-A-0350093.
It can also include an end flange portion that is old and stuffed and sealed to it.

Preferably, the leader is a slightly reduced width extension of the peripheral cover, ie an extension not attached to the end cover. However, the leader can also be a separate strip attached to the perimeter cover. In another aspect, the leader is attached directly to the strip material, just as the perimeter cover is attached to the strip material. In this way, the leader and the perimeter cover overlap each other. The leader is covered by the perimeter cover, is longer than the perimeter cover and protrudes from the package. In yet another aspect, the perimeter cover is attached to the strip material along line L1, and the leader is attached to the perimeter cover along line L2, which is, for example, a few mm away from line L1. Thus, the perimeter cover and the leader also overlap each other. The lap cover covers the leader. The leader is longer than the perimeter cover and protrudes from the package. Circumference cover is EP 035
As disclosed in EP-A-0350093, when comprising an end flange portion,
The packaged roll exposes the leader, and the packaging can be torn by pulling on the leader, as disclosed in the above-referenced patent application.

The roll package can be loaded into a dispenser cassette which can be placed in a suitable cooperating device, but the roll package can also be loaded directly into the cooperating device.

The package according to the invention offers important advantages.

Preferably, each end cover comprises a flexible disk and a rigid disk, the flexible disk ensuring light tightness of the package, and the rigid disk providing substantial linearity and high buckling values. As a result, reliable reverse winding and smooth transport are ensured.

Many different materials can be used to make a flexible or rigid disk. The flexible disk need not be manufactured from a tearable material. The material of the hard disk can be transparent, for example, polyethylene terephthalate or a laminate thereof, and this material is readily available in the film imaging industry.

In a preferred embodiment, the thickness of the end cover is
At the same time, the advantages that can be more easily obtained by using a thick rigid end cover, i.e., can be very limited, while ensuring sufficient light shielding and reliable reverse winding and smooth transport, For example, 0.3-0.4mm
It can be. However, it is important that the thickness of the end cover be limited due to dimensional considerations. In a dispenser cassette or cooperating device, the packaged roll is placed on an unwind spool. In modern cassettes and cooperating devices, there is substantially no axial space available between the roll package and the spool.

In the most preferred embodiment, no adhesive or adhesive tape is required to attach the end covers to the peripheral cover and the core and to attach the disks that make up the end covers to each other, and most preferably a tearable adhesive. Does not require tape. Thus, the risk of soiling of the photosensitive strip material or adhesive of the dispensing device is eliminated.

In a preferred embodiment, the perimeter cover can have a very simple shape and does not require a complicated shape to initiate the tear. Preferably, the leader is a slightly reduced width extension of the perimeter cover and has a tapered shape.

In a preferred embodiment, due to the materials used and their thickness, extra heat-resistant lacquer, for example, on the end cover to avoid melting problems when attaching the end cover to the peripheral cover and the core. No layers are required.

As will be apparent from the description of the manufacturing process of the packaged roll disclosed in the preamble and the advantages described above, the packaged roll according to the present invention is easy to manufacture and the manufacturing process is easy. Can be automated. The packaging process requires a relatively small number of steps.

[0057]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Since the data describing the invention, such as the materials and dimensions used, have been previously described, only some calculations of the buckling value of the disk are given below.

[0058]

[Table 1] This table uses the following acronyms:

PET: Polyethylene Terephthalate HDPE: High Density Polyethylene For discs composed of more than one material, the buckling value is determined by experiment, in which the buckling resistance of the disc consists of a single material. Compared to the buckling resistance of the disc. The lower or upper buckling value can be calculated by assuming that the disk consists entirely of the weakest material (ie, the material with the lowest C) or the strongest material. For example, a disc having a diameter of 100 mm and consisting of 0.1 mm paper and 0.1 mm PET has a buckling value between 0.02N and 0.32N (these are shown in the table, respectively). 0.2mm
Paper, 0.2 mm PET).

An experiment to determine the buckling value of a disk made of more than one material, hereinafter referred to as an "unknown disk", is as follows.

The axis of the disk (in FIG.
Point - the force acting and toward the center of the disk in a plane perpendicular to the) shown as long dashed added to the top of the unknown disc, - the force increases, buckling occurs force F _b is the unknown a buckling resistance of the disk, - turn exerts a force equal to F _b in the set of discs having a known seat屈値. This set of disks has the same diameter as the unknown disks, but different thicknesses, and they consist of one material. One set is, for example, 0.1m
PET having a thickness of m, 0.15 mm, 0.2 mm, etc.
Can consist of discs. This set of disks D _x
Occur buckling and to take place buckling the next disc D _y for the seat屈値unknown disc is between the seat屈値seat屈値the disk D _y of the disc D _x,
As an example, for a 0.15 mm PET disc, the force F
Assuming that buckling occurs at _b and not at 0.2 mm PET disk, then the buckling value of the unknown disk is the buckling value of the 0.15 mm PET disk and the buckling value of the 0.2 mm PET disk. Between the buckling value.

To determine the buckling value of a disk D having a large inner diameter (ie, greater than 70% of the outer diameter), the same outer diameter as the disk D, a smaller inner diameter (less than 50% of the outer diameter) and different A similar experiment is performed using a set of disks having a thickness.

To determine whether disk D ₁ has a higher buckling value than disk D ₂ , the force at which buckling occurs, F
It is sufficient to determine _b1 and _Fb2 for these disks. If F _b1 > F _b2 , disc D ₁
Have higher buckling values.

In the present invention, the support core (10), the core (1)
Photosensitive strip material (15) coiled around 0)
Roll (11) with two opposite end surfaces (opposite endssurfaces)
Roll (11) having (30, 40), Roll (1)
Substantially straight light-tight end covers (35, 45) for each end surface (30, 40) of 1), each end cover (35, 45) being a corresponding end of the core (10). Parts, having a buckling value B greater than 0.05 N, and each end cover (35, 45)
A first disk (31, 41) having a buckling value B ₁ and a second disk (32, 42) having a second buckling value B ₂ , wherein each first disk (31, 41) has a roll ( 1
2) corresponding to the corresponding end surface (30, 40) of 1)
A light-shielding flexible circumferential cover (12) disposed between the disk (32, 42) and attached to the coiled strip material (15) and covering the outermost part of the coiled winding; A light-tight flexible circumferential cover (12) having a width exceeding the coiled strip material (15) and light-tightly attached to the end covers (35, 45). in sexual package, shading second seat屈値B ₂ is present in the light-shielding package, the package remains second disc (32, 42) has been shipped to being greater than the first seat屈値B ₁ Package, each second disk (32, 42)
A light-shielding package attached to the corresponding first disk (31, 41), the first disk (31, 41)
The light-shielding package whose outer diameter is larger than the diameter of the roll (11), and the peripheral cover (12) is the first disc (31, 41)
A light-shielding package, and a first disk (31, 41) in which the outer diameter of the first disk (31, 41) is substantially equal to the outer diameter of the second disk (32, 42). The light-tight package sealed to the core (10), each first disk (31, 41) has lips (33, 43) at its inner diameter, which are pressed into the end of the core (10). Light-shielding packages, each of which is sealed to and sealed on the first disk (3
1, 41) has a lip (33, 43) at its inner diameter and each second disk (32, 42) has a lip (34, 44) at its inner diameter and each second disk (3, 43).
The edge (34, 44) of each of the first disks (3, 43) is coincide with the edge (33, 43) of each corresponding first disk (31, 41).
The edges (33, 43) of each of the first and second discs (32, 42) and the edges (34, 44) of each of the second discs (32, 42) are squeezed into the end of the core (10) and sealed thereto. Package and cardboard box (6
0), a light-shielding package, and two flanges (51, 52) for supporting the light-shielding package.

Having described preferred embodiments of the invention in detail, it will be apparent to those skilled in the art that many modifications may be made without departing from the scope of the invention as set forth in the appended claims.

[Brief description of the drawings]

FIG. 1 shows an exploded view of an embodiment of a package according to the invention.

FIG. 2 shows an embodiment of a package according to the invention ready to be put in a cardboard box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Core 11 Roll 12 Peripheral cover 13, 14 Tape 15 Strip material 30, 40 End surface 31, 41 First disk 32, 42 Second disk 33, 34 Edge 43, 44 Edge 35, 45 End cover 51, 52 Flange 60 boxes

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Wim Hosseikornu Belgium B 2640 Malt Cell Septes Trat 27 Agfa-Gevert Na Mrose Fennoutjaps (72) Inventor Dairk Peters Belgium B 2640 Malt Cell・ Septes Trat 27 ・ Agfa-Gevert Na Murose Fennojasjarp (72) Inventor Danny Van Geite Belgium 2640 Maltcell Septestrat 27 ・ Agfa-Gevert Na Mulose Fuennajasjap

Claims (2)

[Claims] 1. A support core (10), a roll (11) of photosensitive strip material (15) coiled around the core (10), comprising two oppositely located end surfaces (30, 40). Roll (1)
1), a substantially straight light-tight end cover (35, 45) for each end surface (30, 40) of the roll (11), and each end cover (35, 45) comprises a core (10). ) Having a buckling value B greater than 0.05N, and each end cover (35, 45) having a first buckling value B ₁ . 1 second disk having a disk (31, 41) and the second seat屈値B ₂ (32, 42)
Wherein each first disk (31, 41) is disposed between a corresponding end surface (30, 40) of the roll (11) and a corresponding second disk (32, 42), And a light-shielding flexible circumferential cover (12) attached to the coiled strip material (15) and covering the outermost portion of the coiled winding, having a width exceeding the coiled strip material (15). And end cover (3
5,45) to the light-shielding manner any installed light-shielding flexible circumferential cover (12), the light-shielding package comprising comprise, that the second seat屈値B ₂ is larger than the first seat屈値B ₁ Characteristic light-shielding package. 2. An assembly comprising a cardboard box (60), the light-tight package of claim 1 and two flanges (51, 52) for supporting the light-tight package.