JP2006301402A - Tray for sheetlike image recording material and sheetlike image recording material package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tray for sheetlike image recording materials which prevents scratching due to vibration and handling in a transport process and reduces the number of sheets stacked without changing the shape of the tray (without requiring modification of photographic equipment), and to provide a sheetlike image recording material package. <P>SOLUTION: The tray for sheetlike image recording materials has a rectangular first bottom part on which sheetlike image recording materials are stacked and side walls for regulating the position of the sheetlike image recording materials raised from the edges of the first bottom part, wherein the tray has a second bottom part above the first bottom part and the second bottom part is formed by putting a flat plate member having a rectangular flat face and side walls disposed at the edges of the flat face toward the rear face side of the flat face on a dish-shaped buffer member located on the front face of the first bottom part, so that the rear face of the flat face and the front face of the first bottom part confront each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sheet-like image recording material tray (hereinafter also referred to as a tray) and a sheet-like image recording material package using the same.

  In recent years, images for radiation diagnosis such as MRI (Magnetic Resonance Imaging), X-ray CT (Computed Tomography), CR (Computed Radiography), computer-aided diagnosis system, etc. as digital or analog signals, etc. In general, a means for scanning a laser beam and rendering the image on a sheet-like image recording material and using it as a transmission image for diagnosis is generalized. In such a diagnostic apparatus, a magazine for sheet-like image recording material is used to supply unexposed sheet-like image recording material (hereinafter also referred to as image recording material) to the apparatus or to store photographed image recording material. in use. The unexposed image recording material to be used is stored in a light-shielding moisture-proof barrier bag in a state where a plurality of sheets are laminated, and further provided in the market in a form housed in a paper outer box.

  In recent years, X-ray film, which is an image recording material, is protected by a protective member so that it can be handled in a bright room, and is a sealed package using a packaging material that is light-shielding and does not affect photographic performance. in use. These packages are, for example, Japanese Utility Model Laid-Open No. 5-004155, Japanese Patent Application Laid-Open No. 7-225452, Japanese Patent Application Laid-Open No. 64-44433, Japanese Patent Application Laid-Open No. 1-105926, Japanese Patent Application Laid-Open No. 1-105927, Japanese Patent Application Laid-Open No. 1-98530. The film supply magazine of the image photographing apparatus as described in the above can be mounted in the photographing apparatus in the bright room. For example, after loading the magazine described in Japanese Patent Laid-Open No. 2001-359450 in the bright room, the magazine is closed and the package is out of the magazine. One end of the body is cut and only the packaging bag is pulled out.

  In recent years, reduction of processing waste liquid has been strongly desired from the viewpoint of environmental protection and space saving. In particular, in the medical field, waste liquid accompanying wet processing of image forming materials has become a problem in waste liquid processing. As a countermeasure against these problems, a photothermographic material that forms a photographic image using a heat development method that does not generate processing waste liquid has begun to be used.

  Such a photothermographic material contains a reducible silver source (for example, an organic silver salt), a catalytically active amount of a photocatalyst (for example, silver halide), and a reducing agent dispersed in a binder matrix. The photothermographic material is stable at normal temperature, but generates silver through a redox reaction between a reducible silver source (which functions as an oxidizing agent) and a reducing agent when heated to a high temperature after exposure. This redox reaction is facilitated by the catalysis of the latent image nuclei generated by exposure, and the silver produced by the reaction of the organic silver salt in the exposed areas provides a black image, which contrasts with the unexposed areas, Is formed.

  As described above, a photothermographic material is a coating solution for forming a photosensitive layer in which an organic silver salt, a silver halide and a reducing agent are dispersed in an organic binder matrix on a support made of a strip-shaped plastic. After being coated thicker than the photosensitive layer of the X-ray film, dried and wound up into a roll, it is cut into a required width, and then cut into a required length to obtain a sheet-like photothermographic material. . In general, the photothermographic material is softer and more easily scratched than the photosensitive layer of a conventional X-ray film. Further, like the conventional X-ray film, it has a property that its performance fluctuates when stored under high humidity conditions.

  For this reason, the sheet-shaped photothermographic material is packaged in a light-proof moisture-proof bag in a state of being stacked on a tray-shaped protective member so as not to move in the light-proof moisture-proof bag and sealed and packaged under reduced pressure. Yes. This package is delivered to the user in a form stored in an outer box made of corrugated cardboard, cardboard or the like. In the same manner as the conventional sheet-shaped X-ray film, these packages are used in a magazine in a bright room and can be used by being attached to a photographing apparatus in the bright room.

  As these packaging bodies, for example, a sheet-shaped photothermographic material is stacked on a tray-shaped protective member made of a thermoplastic resin described in JP-A-2001-174952, and hermetically sealed with a light-proof moisture-proof bag. Wrapping packages are known. However, the above packaging has little variation in photographic performance during storage, and is excellent without vibration and scratches due to handling, etc. during transportation, but the waste disposal suitability after use tends to be inferior to that of paper. is there. As a countermeasure for this, for example, a package body in which sheet-like photothermographic materials are stacked on a paper tray-shaped protective member and hermetically sealed with a light-proof moisture-proof bag is known (see, for example, Patent Document 1). .)

  However, in the case of the package described in Patent Document 1, it is excellent in terms of preventing photographic performance fluctuations during storage, vibration during transportation, generation of scratches due to handling, etc., and light incineration, but the following problems Has a point.

  In the case of the package described in Patent Document 1, generally 100 to 150 image recording materials are stacked. For this reason, when the amount of use per day is small, the image recording material is placed naked in the photographing apparatus for several months. In this case, the performance change of the image recording material is small in winter when the humidity and temperature are low, but the performance deterioration of the image recording material may be advanced in summer when the humidity and temperature are high. For this reason, it is sufficient to reduce the number of sheets to be stacked. However, if the number is simply reduced, the image recording material may move in the tray due to vibration, handling, etc. during the transportation process, and there is a risk of scratching. Moreover, if the tray depth is reduced, the number of stacked sheets can be reduced, but the shape of the tray is changed, and further, the cost and time are greatly required for repair and adjustment of the photographing apparatus.

Under these circumstances, the tray for sheet-like image recording material and the number of sheets to be stacked are reduced by preventing the generation of scratches due to vibration, handling, etc. during the transportation process without changing the shape of the tray, and the sheet-like image recording Development of a material package was desired.
JP 2004-170759 A

  The present invention has been made in view of such circumstances, and its purpose is to prevent the occurrence of scratches due to vibration, handling, etc. during transportation without changing the shape of the tray (without remodeling the photographing equipment). It is an object of the present invention to provide a sheet-like image recording material tray and a sheet-like image recording material package in which the number of stacked sheets is reduced.

  The above object has been achieved by the following constitution.

(Claim 1)
In a tray for sheet-like image recording material having a rectangular first bottom portion on which sheet-like image recording materials are stacked, and a sheet-like image recording material position regulating side wall raised from the peripheral edge of the first bottom portion,
Having a second bottom on the first bottom;
The second bottom portion includes a flat plate member having a rectangular flat surface and a side wall provided on the peripheral portion of the flat surface toward the back surface side of the flat surface.
Formed on the dish-shaped buffer member disposed on the surface of the first bottom portion by placing the back surface of the flat surface and the surface of the first bottom portion facing each other,
A tray for sheet-like image recording material, wherein the sheet-like image recording material is stacked on the surface of the second bottom portion.

(Claim 2)
2. The tray for sheet-like image recording material according to claim 1, wherein the distance between the end surface of the side wall and the surface of the first bottom portion is 3 mm or less.

(Claim 3)
3. The tray for sheet-like image recording material according to claim 1, wherein the second bottom portion is disposed at a position lower by 5 to 25 mm than the edge of the side wall for regulating the position of the sheet-like image recording material.

(Claim 4)
The tray for sheet-like image recording material according to any one of claims 1 to 3, wherein the pressure resistance of the second bottom portion is 100 to 10,000 Pa.

(Claim 5)
5. The tray for sheet-like image recording material according to claim 1, wherein a side wall of the flat plate member is fixed to a side wall for regulating the position of the sheet-like image recording material.

(Claim 6)
The dish-shaped cushioning member includes a circular top, an inclined side wall that is inclined outwardly from the periphery of the top, and a flange that is integrally provided at an end portion around the inclined side wall. The tray for sheet-like image recording material according to any one of claims 1 to 5, wherein the tray is placed on the surface of the first bottom portion with the top side facing up.

(Claim 7)
The tray for a sheet-like image recording material according to any one of claims 1 to 6, wherein the dish-shaped buffer members are disposed at at least four corners of the first bottom portion.

(Claim 8)
The material is a paper having a basis weight of 100 to 1000 g / m ² , a thickness of 0.4 to 1.0 mm, and a moisture content of 0.1 to 5% by mass. A tray for sheet-like image recording material according to 1.

(Claim 9)
9. The tray for sheet-like image recording material according to claim 8, wherein the paper contains 50% by mass or more of recycled paper.

(Claim 10)
The sheet-like image recording material tray according to any one of claims 1 to 9, wherein the sheet-like image recording material is a photothermographic material.

(Claim 11)
The sheet-like image recording material is placed on the tray for sheet-like image recording material according to any one of claims 1 to 10, and the moisture permeability is 1.0 g / m ² · 24 h (40 ° C · 90% RH). A sheet-shaped image recording material package, which is packaged in the following light-proof moisture-proof bag.

(Claim 12)
The sheet-shaped image recording material package according to claim 11, wherein the light-proof moisture-proof bag is sealed under a reduced pressure condition of 20 to 90 kPa.

(Claim 13)
The sheet-like image recording material package according to claim 11 or 12, wherein the sheet-like image recording material is a photothermographic material.

  Provided are a sheet-like image recording material tray and a sheet-like image recording material packaging, in which the number of stacked sheets is reduced by preventing generation of scratches due to vibration, handling, etc. during transportation without changing the shape of the tray. As a result, it is possible to use a small amount without waste, and it is possible to use the image recording material in the photographing apparatus with peace of mind.

  Embodiments of the present invention will be described with reference to FIGS. 1 to 8, but the present invention is not limited thereto.

  FIG. 1 is a schematic perspective view of a package using a conventional tray.

  In the figure, 1a indicates a package. Reference numeral 2 denotes a tray on which the image recording material 3 is stacked, and reference numeral 4 denotes a light-shielding moisture-proof bag for packaging the image recording material 3 stacked on the tray 2. Generally, 100 to 150 image recording materials are stacked. Reference numerals 202 to 205 denote image recording material position regulating side walls which are provided at the peripheral edge of the rectangular bottom 201 of the tray 2. The bottom part 201 is produced according to the size and shape of the image recording material 3.

  Reference numerals 401 and 402 denote side seal portions of the light-proof moisture-proof bag 4, and reference numeral 403 denotes a center seal portion of the light-proof moisture-proof bag 4. Reference numeral 404 denotes a hole through which the light-shielding moisture-proof bag 4 is pulled out by being engaged with an engaging portion (not shown) of the image forming apparatus after the package 1 is loaded into the image forming apparatus (not shown). The light-shielding moisture-proof bag 4 shown in this figure is manufactured by the center seal method, and the package 1a is housed in an outer box (not shown) and used by the user.

  As shown in this figure, the image recording material stacked on the tray is as large as 100 to 150 sheets. Therefore, if the amount of use per day is small, the image recording material will remain in the photographing apparatus for several months. It is placed in a state where it is taken out from the bag 4. In this case, there is little change in the performance of the image recording material in the winter when the humidity and temperature are low, but in the summer when the humidity and temperature are high, the performance of the image recording material may also deteriorate, so it must be discarded. Cost becomes high. The present invention relates to a tray and a sheet-like image recording material packaging body in which the number of sheets to be stacked is reduced by preventing generation of scratches due to vibration, handling, etc. in the transportation process without changing the shape of the tray.

  FIG. 2 is a schematic perspective view of a package using the tray of the present invention.

  In the figure, 1b represents a package. Reference numeral 5 denotes a tray on which the image recording materials 3 are stacked. The tray 5 is placed on a main body 501 (see FIG. 3) and a dish-shaped buffer member 7 (see FIG. 3) placed on the first bottom 502 of the main body 501 (see FIG. 3). A flat plate member 6 forming a second bottom portion 507. The main body 501 has a rectangular first bottom 502 and sheet-like image recording material position regulating side walls 503 to 506 that are provided upright at the peripheral edge of the rectangular first bottom 502.

  The first bottom portion 502 is manufactured according to the size and shape of the image recording material 3. The sheet-like image recording material position regulating side walls 503 to 506 are the same height as the side walls 202 to 205 of the tray 2 shown in FIG. 1, and the size and shape of the first bottom portion 502 are also shown in FIG. This is the same as the bottom 201 of the tray 2.

  The flat plate member 6 has a flat surface 601 and side walls 604a to 604d (see FIG. 3) provided on the periphery of the flat surface 601 (forming the second bottom portion 507) toward the back side of the flat surface 601. The side walls 604a to 604d (see FIG. 3) are fixed to the tray 5 by fixing the side walls 603a to 604d to the side walls 503 to 506 for regulating the position of the sheet-like image recording material. Reference numeral 507 denotes a second bottom portion of the tray 5 formed by the flat surface 601 of the flat plate member 6. The flat plate member 6 will be described with reference to FIGS. 3 and 6 to 8. Other symbols are the same as those in FIG.

  When producing the package 1b shown in this figure, the image recording material 3 is stacked on the tray shown in FIG. 3 and stored in the light-proof moisture-proof bag 4, and the image recording material is stored in the tray at the time of transportation. Depressurization condition of 20 to 90 kPa in consideration of prevention of scratches due to movement, prevention of sticking of stacked image recording materials, prevention of peeling of the photosensitive layer due to rubbing with the side wall of the tray, prevention of transportability when loaded in the image forming apparatus, etc. It is preferable to produce by sealing with deaeration.

The moisture permeability of the light-shielding moisture-proof bag 4 according to the present invention is preferably 1.0 g / m ² · 24 h (40 ° C. · 90% RH) or less in consideration of maintaining the performance of the image recording material during storage. Furthermore, 0-0.5g / m < ² > * 24h (40 degreeC * 90% RH) is preferable. The moisture permeability is a value measured by the measurement method described in JIS K7129-1992.

  FIG. 3 is an exploded schematic perspective view of the tray of the present invention shown in FIG.

  In the drawing, reference numeral 7 denotes a dish-shaped buffer member disposed in a space formed by the first bottom portion 502 and the back surface of the second bottom portion 507. The tray 5 includes a main body 501, a flat plate member 6, and a dish-shaped buffer member 7. Reference numerals 508a to 508d denote corners of the first bottom portion 502, and the corners 508a to 508d are cut or rounded to avoid making a hole in the light-proof moisture-proof bag at the corner when the tray is put in the light-proof moisture-proof bag. It is preferable to attach. Reference numeral 509 denotes a hole provided for detecting the sheet-like image forming material provided in the first bottom portion 502. The position of the hole 509 preferably matches the position of the hole formed in the upper surface (flat surface) 601 of the flat plate member 6 (which becomes the second bottom when the tray 5 is formed).

  Reference numeral 602 a (602 b) denotes a hole for detecting the sheet-like image forming material opened in the flat surface 601 of the flat plate member 6. The hole 602a (602b) is a means for causing the image forming apparatus (not shown) to detect that the storage container (not shown) for the sheet-like image forming material of the image forming apparatus is empty. The position where the hole 602a (602b) is disposed is a position of a sensor for detecting when the sheet-like image forming material of the image forming apparatus is exhausted, and a suction cup for supplying the sheet-like image forming material to the image forming apparatus ( A suction cup (not shown) for supplying the sheet-like image forming material to the image forming apparatus when the sheet-like image forming material stacked on the second bottom portion 507 runs out. By sucking the hole 602a (602b), it can be seen that the suction pressure is not lowered and the sheet-like image forming material is lost. In addition, detection by a sensor that detects when the sheet-like image forming material of the image forming apparatus runs out is possible.

  The number of holes for detection is the number of sensors for detecting when the sheet-like image forming material of the image forming apparatus runs out, and the number of suction cups (not shown) for supplying the sheet-like image forming material to the image forming apparatus. It is preferable to arrange the same number. The size of the hole is preferably larger than the size of the suction cup.

  The flat plate member 6 can be manufactured by raising the side wall from the back surface of a material having one flat surface having the same size as the first bottom portion 502 and an area for forming the side wall. Reference numerals 604a to 604d denote formed side walls, reference numeral 601 denotes a flat surface of the flat plate member 6 (second bottom when assembled on a tray), and reference numeral 603 denotes a back surface. Reference numerals 605a to 605d denote corners, and the corners 605a to 605d are cut or rounded so as not to come out from the corners 508a to 508d of the first bottom 502. The side walls 604a to 604d all have the same height. In this figure, the flat plate member 6 shows a case in which the flat surface 601 and the side walls 604a to 604d are integrated. However, the flat plate member 6 is prepared by first producing a member corresponding to the side walls 604a to 604d. Fabrication is also possible by a separate system in which a member corresponding to the flat surface 601 is fixed on the top.

  The flat plate member 6 is disposed on the dish-shaped buffer member 7 placed on the first bottom portion 502 with the flat surface 601 on the upper side. At this time, the side walls 604a to 604d are fixed to the sheet-like image recording material position regulating side walls 503 to 506 through, for example, an adhesive. By arranging in this way, the surface 601 of the flat plate member 6 forms the second bottom portion 502.

  The dish-shaped buffer member 7 has two types, a dish-shaped buffer member 7a having a disk-shaped top and a dish-shaped buffer member 7b having a ring-shaped top. The dish-shaped buffer member 7a includes a disc-shaped top portion 7a1, a tilted side wall 7a2 which is inclined to the outside of the periphery and integrally provided around the disc-shaped top portion 7a1, and a periphery of the tilted side wall 7a2. And a flange portion 7a3 provided integrally with the end portion.

  The dish-shaped cushioning member 7b includes a ring-shaped top portion 7b1, an inclined side wall 7b2 that is inclined to the outside of the periphery and integrally provided around the ring-shaped top portion 7b1, and a periphery of the dish-shaped inclined side wall 7b2. And a flange portion 7b3 provided integrally with the end portion. The number of the dish-shaped buffer members 7a (7b) shown in the figure arranged on the first bottom 502 can be changed according to the pressure resistance required by the tray. A method of arranging the dish-shaped buffer member 7a (7b) on the first bottom portion 502 will be described with reference to the drawings.

The material of the main body 501 of the tray 5, the flat plate member 6, and the dish-shaped buffer member 7 shown in this figure are all paper. The paper to be used has a basis weight of 100 to 1000 g / m ² , thickness in consideration of environment, strength during transportation, ease of molding, shape stability, influence on image recording materials, manufacturing cost, productivity, etc. The thickness is preferably 0.4 to 1.0 mm, the water content is 0.1 to 6% by mass, and the recycled paper is preferably contained by 50% by mass or more. The basis weight is measured according to JIS P8118 (1998). The thickness is a value measured using a micro gauge (manufactured by Mitutoyo Corporation) after drying the paperboard in a constant temperature bath at 40 ° C. for 2 hours. A moisture content shows the value measured according to JISP8127.

  Particularly preferable paper materials include, for example, an intermediate recycled paper layer in which recycled pulp is laminated in consideration of the strength, resistance to paper dust generation, easy molding, environmental friendliness, and the like on both sides of the intermediate recycled paper layer. And a paperboard having the outermost layer of fine paper having a clay or kaolin coating layer.

  The pressure resistance of the second bottom portion 507 of the tray 5 includes the strength when stacking image recording materials in a manufacturing process, placing them in a light-proof moisture-proof bag and then stacking them, and strength when transporting the packages. In consideration, it is preferably 100 to 10,000 Pa. The compressive strength indicates a value obtained by measuring the load that the flat plate member can withstand by stacking image recording materials or substitutes having an area of 90 to 100% of the area of the second bottom portion of the tray.

  In addition, the breaking strength considers the self-supporting property of the side wall for regulating the position of the sheet-like image recording material of the tray body, the stability of the flat plate member, the insertion property of the tray into the light-proof moisture-proof bag, and the protection of the light-proof moisture-proof bag. 1.2 to 4.5 kPa, more preferably 1.8 to 3.5 kPa, and most preferably 2.5 to 3.0 kPa. The breaking strength is a value measured according to JIS-P8115.

The tray shown in this figure can be manufactured through the following steps.
1) Cut out the sheet-like paperboard so that it becomes a development view of the tray main body shown in this figure. As a method of cutting from the sheet-like paperboard so as to be a development view of the tray main body, it is preferable to punch at once with a Thomson blade type punching blade.
2) After punching, creasing is performed by a room temperature creasing method at a position where the side wall for regulating the position of the sheet-like image recording material is formed.
3) Stand up along the streaks to which the sheet-like image recording material position regulating side wall is attached to produce a tray body.
4) Cut out the sheet-like paperboard so that it becomes a development view of the flat plate member shown in this figure. As a method of cutting from a sheet-like paperboard so as to be a development view of a flat plate member, it is preferable to punch out at once with a Thomson blade type punching blade.
5) After punching, creasing is performed at a location where the side wall is to be formed by a room temperature creasing method.
6) A flat plate member is manufactured by starting up from the peripheral edge of the back surface of the flat plate member along the stripes to which each side wall is attached.
7) Place the dish-shaped cushioning members at least at the four corners of the first bottom of the tray body so as not to protrude from the first bottom. At this time, it is preferable that a part of the collar portion of the dish-shaped buffer member is bonded and fixed to the first bottom portion.
8) Place the prepared flat plate member on the dish-shaped buffer member with the top side facing up on the tray body where the dish-shaped buffer member is arranged. The recording material position regulating side wall is fixed with an adhesive.
The tray shown in this figure can be manufactured through the processes 1) to 8).

  4 is a schematic cross-sectional view taken along the line AA ′ of FIG. FIG. 4A is a schematic enlarged sectional view taken along the line AA ′ of FIG. FIG. 4B is a schematic enlarged cross-sectional view of a portion indicated by S in FIG.

  In the figure, H indicates the height from the tip of the sheet-like image recording material position regulating side wall 503 to the second bottom 507 (the surface 601 of the flat plate member 6). The height H is preferably 5 to 25 mm in consideration of the number of image recording materials stacked on the second bottom 507, the replacement frequency of the tray, the consumption period of the image recording material remaining on the tray, and the like.

  I indicates the distance between the end surface 604 c 1 of the side wall 604 c of the flat plate member 6 and the surface 502 a 1 of the first bottom portion 502. The distance I is preferably 3 mm or less in consideration of maintaining the function of the dish-shaped buffer member and maintaining the pressure strength of the second bottom portion. More preferably, 0.1-3 mm is preferable.

  As shown in this figure, the flat plate member 6 includes a sheet-like image forming material 602a (602b) for detecting the sheet-like image forming material formed in the flat surface 601 and a sheet-like image forming material provided in the first bottom portion 502. The back surface 603 is placed so that the back surface 603 contacts the top of the dish-shaped buffer member 7a (7b) with the flat surface 601 facing upward so as to coincide with the hole 509a (509b) opened for detection of the sheet The inner side of the side wall 503 for regulating the image-shaped image recording material and the outer side of the side wall 604c (604d) are fixed with an adhesive, and are disposed in a state of maintaining a distance of 3 mm or less between the end surface of the side wall and the surface of the first bottom part. The second bottom portion 507 is formed. In addition, on the hole 509a (509b) provided for detection of the sheet-like image forming material provided in the first bottom portion 502, an inside of a storage container (not shown) for the sheet-like image forming material of the image forming apparatus. Since the image forming apparatus (not shown) detects that it has become empty, it is necessary to dispose the dish-shaped buffer member 7b. Other symbols are the same as those in FIG.

  FIG. 5 is an enlarged schematic cross-sectional view of the dish-shaped buffer member shown in FIG. FIG. 5A is an enlarged schematic cross-sectional view taken along the line BB ′ of FIG. FIG. 5B is an enlarged schematic cross-sectional view taken along the line BB ′ of FIG.

  The disk-shaped top portion 7a1 of the dish-shaped buffer member 7a has a flat surface portion 7a11 in the vicinity of the peripheral portion, a first inclined portion 7a12 connected to the flat surface portion 7a11, and a second connecting portion connected to the first inclined portion 7a12 up to the central portion 7a14. And an inclined portion 7a13. The angle of the first inclined portion 7a12 with respect to the flat surface portion 7a11 is preferably 15 to 34 ° in consideration of the strength of the dish-shaped buffer member. The angle of the second inclined portion 7a13 with respect to the flat surface portion 7a11 is preferably 2 to 8 ° in consideration of the strength of the dish-shaped buffer member. It is preferable that the connection part 7a15 from the plane part 7a11 to the inclined side wall 7a2 has R1-5. The angle with respect to the flat surface portion 7a11 of the inclined side wall 7b2 provided in the peripheral portion of the disk-shaped top portion 7a1 is preferably 10 to 30 ° in consideration of the strength of the dish-shaped buffer member. Drawing is preferably performed on the peripheral surface of the inclined side wall 7a2 in order to increase the strength of the inclined side wall 7a2.

  The flange portion 7a3 has an inclined portion 7a32 provided on the peripheral portion of the inclined side wall 7a2 via a connecting portion 7a31 having R1 to R3. The angle of the inclined portion 7a32 with respect to the flat portion 7a11 is preferably 2 to 8 ° in consideration of bending strength. The peripheral edge portion 7a33 of the inclined portion 7a32 is bent at R0.5 to 2.0.

  The ring-shaped top portion 7b1 of the dish-shaped buffer member 7b has a first flat surface portion 7b11, an inclined portion 7b12 connected to the flat surface portion 7b11, and a second flat surface portion 7b13 connected to the inclined portion 7b12. There is no ring shape. The angle of the inclined portion 7b12 with respect to the first flat surface portion 7b11 is preferably 2 to 8 ° in consideration of the strength of the dish-shaped buffer member. The shape of the inclined side wall 7b2 provided in the peripheral part of the ring-shaped top part 7b1 and the flange part 7b3 provided in the peripheral part of the side wall 7b2 is the same as that of the dish-shaped buffer member shown in FIG. The same.

  The dish-shaped buffer member shown in FIGS. 5A and 5B can be manufactured by the method described in the latest paper processing manual, Tech Times, 803-809. The other dish-shaped buffer member shown in (b) of FIG. 5 is performed in the same manner as the dish-shaped buffer member shown in (a) of FIG. Can be produced. Further, it is also possible to manufacture by punching out the central portion of the disk-shaped top portion 7a1 after preparing the dish-shaped buffer member shown in FIG.

  6 is a plan view of the dish-shaped buffer member shown in FIG. FIG. 6A is a plan view of the dish-shaped buffer member shown in FIG. 6A is a plan view of the dish-shaped buffer member shown in FIG. 5B.

  In the case of the dish-shaped buffer member shown in FIG. 6A, U represents the diameter of the flange portion 7a3 (including the inclined portion 7a32 and the peripheral edge vicinity portion 7a33) of the dish-shaped buffer member, and V is The diameter of the disk-shaped top part 7a1 is shown. W indicates the width of the flat surface portion 7a11 provided around the disc-shaped top portion 7a1. X shows the width | variety of the inclination part 7a32 of the collar part 7a3.

  The ratio of the diameter V of the disk-shaped top portion 7a1 to the flange portion 7a3 (including the inclined portion 7a32 and the peripheral portion 7a33) of the dish-shaped buffer member is the ratio of the pressure resistance strength of the dish-shaped buffer member. In view of the above, 1: 0.5 to 1: 0.9 is preferable. The width of the flat surface portion 7a11 is preferably 3 to 15% with respect to the diameter V of the plate-like top portion 7a1 in consideration of the bending rigidity. The width X of the inclined portion 7a32 is preferably 10 to 30% with respect to the diameter U of the flange portion 7a3 in consideration of the strength of bending rigidity (difficult to buckle).

  In the case of the dish-shaped buffer member shown in FIG. 6B, Y indicates the inner diameter of the ring-shaped top portion 7b1. The inner diameter Y is preferably the same as the hole 509a (509b) (see FIG. 3) provided for detection of the sheet-like image forming material provided in the first bottom portion 502 (see FIG. 3). Other dimensions are the same as those of the dish-shaped buffer member 7a shown in FIG.

  FIG. 7 is a schematic perspective view showing an example in which the dish-shaped buffer member shown in FIG. 3 is disposed on the first bottom portion of the tray.

  The dish-shaped buffer member 7b shown in FIG. 7 includes a center of a hole 509a (509b) provided for detection of the sheet-like image forming material provided in the first bottom 502, and a dish-shaped buffer member 7b. It is necessary to arrange so that the centers of the ring-shaped top portions 7b1 coincide. The dish-shaped buffer members 7 a are preferably arranged at equal intervals according to the size of the first bottom portion 502 of the tray 5. The position where the dish-shaped buffer member is disposed on the first bottom portion 502 needs to be disposed at least at the four corners of the first bottom portion 502. Although it depends on the size, it can be changed according to the required pressure strength. As an example of preferable arrangement, it is preferable to arrange so that the proportion of the dish shape is 30 to 60% with respect to the area of the first bottom portion 502 in consideration of the pressure strength of the second bottom portion. It is necessary to determine the size of the dish-shaped buffer member in accordance with the number to be arranged. For example, when the product of the first bottom portion shown in the figure is 35.4 cm × 43.0 cm, a dish-shaped buffer member having a diameter U (see FIG. 6) of the collar portion of 8.2 cm is used. It is preferable to arrange as shown in FIG.

  FIG. 8 is a schematic view of a flat plate member having another shape. FIG. 8A is a schematic perspective view of another flat plate member. FIG. 8B is a schematic cross-sectional view taken along the line DD ′ of FIG.

  In the figure, 6a indicates a flat plate member. Reference numerals 606 a to 606 d denote bent portions obtained by bending the side walls 604 a to 604 d so as to be parallel to the back surface 603 of the flat surface 601. When placed on the bottom 502 (see FIG. 3) of the main body 501 (see FIG. 3) of the tray 5, the bent portions 606a to 606d can be bonded and fixed to the bottom 502 (see FIG. 3). ing. At the same time, the outside of the side walls 604a to 604d and the inside of the sheet-like image recording material position regulating side wall of the main body 501 of the tray 5 (see FIG. 3) may be bonded and fixed. Other symbols are the same as those in FIG.

The flat plate member shown in this figure can be manufactured through the following steps.
1) Cut out the sheet-like paperboard so that it becomes a developed view of the flat plate member shown in this figure. As a method of cutting from a sheet-like board so as to be a developed view of the tray, it is preferable to punch out at once with a Thomson blade type punching blade.
2) After punching, creasing is performed at a location where each side wall and each bent portion are formed by a room temperature creasing method.
3) It rises along the stripe | line | column with which the side wall was attached from the peripheral part of the back surface of a flat plate member. 4) Bend along the streaks attached to each side wall to form a bent part.
By going through the processes of 1) to 4), it is possible to produce a flat plate member having a bent portion shown in this figure. When the flat plate member shown in this figure is used to produce the tray shown in FIG. 3, the first bottom portion of the main body and the back surface of the flat plate member face the main body on which the dish-shaped buffer member is arranged. In this state, an adhesive is applied to the bent portion, and the side wall of the flat plate member and the side wall for regulating the position of the sheet-like image recording material of the main body are fixed with the adhesive.

  The image recording material stacked on the tray using the dish-shaped buffer member shown in FIGS. 2 to 8 is 10 to 90 in consideration of the amount of use per day, the performance change of the image recording material when remaining, and the like. Sheets are preferred, and 25 to 70 are more preferred.

  By using the tray using the dish-shaped buffer member shown in FIGS. 2 to 8, it is possible to reduce the amount of image recording material to be stacked, and even when the amount of use per day is small, The image recording material can be placed in a state where it is put out from the light-shielding moisture-proof bag 4 for a short period, and can be used with peace of mind because it is not discarded even in summer when the humidity and temperature are high. Can also be suppressed.

  When producing a tray using the dish-shaped buffer member shown in FIGS. 2 to 8, fixing the side wall of the flat plate member and the side wall for regulating the position of the sheet-like image recording material of the tray body, the dish-shaped buffer When an adhesive is used for fixing the member and the first bottom, and fixing the side walls of the flat plate member, examples of preferable adhesives include, for example, Daicel Finechem Co., Ltd .: Sebian 3502, Sebian A MY7951, Sebian A 22046, Sebian A 4786, Nippon Steel Chemical Co., Ltd .: Life Bond AV-840M, Life Bond AP-6710, Konishi Co., Ltd .: Bond SP95, Bond CN140, CN1, CN165, MP 435, MP 1311, MP 973, MH 510, Yasuhara Chemical Co., Ltd .: Hirodine 7521, Nita Gelatin Co., Ltd .: Nitta Ito HC-126, Nippon Uni polymer (Ltd.): UH370, Sumitomo 3M: 1BF560 the like. Among these. Particularly preferred adhesives include Konishi Co., Ltd .: MP 435, MP 1311, MP 973, MH 510, Yashara Chemical Co., Ltd .: Hirodine 7521, and Nittah Gelatin Co., Ltd .: Nittite HC-126.

  The paperboard according to the present invention preferably uses wood pulp as a main raw material when recycling after use is taken into consideration. The pulp of wood may be a pulp as described in Maruzen Co., Ltd. (pulp and paper) pages 109 to 268, Engineering Book Co., Ltd. (paper engineering) pages 180 to 187. Natural pulp of softwood pulp, hardwood pulp, softwood, hardwood mixed pulp is used, and any of mechanical pulp, chemical pulp, chemiground pulp, chemimechanical pulp, and sulfite pulp may be used depending on the treatment method. The pulps described in JP-A-2-48372, JP-A-2-53999, JP-A-2-96741, JP-A-2-96742, JP-A-2-99689, JP-A-2-99693, and JP-A-2-180583 are used. It is also possible to do.

  These pulps are preferably chemical pulps (sulfate pulp or sulfite pulp) with few impurities, and pulps that have been whitened by bleaching are also useful. In the base paper, sizing agents such as higher fatty acids and alkyl ketene dimers, white pigments such as calcium carbonate, talc and titanium oxide, paper strength enhancing agents such as starch, polyacrylamide and polyvinyl alcohol, fluorescent whitening agents, polyethylene glycols A water retaining agent such as a dispersant, a softening agent such as a quaternary ammonium, and the like can be appropriately added.

  The fiber length after beating the pulp used for the paperboard is preferably 30 to 70% of the sum of the mass% of the 24 mesh residue and the mass% of the 42 mesh residue defined in JIS-P-8207. In addition, it is preferable that the mass% of 4 mesh remainder is 20 mass% or less.

The paperboard can be given a high smoothness by calendering at the papermaking stage or after papermaking. The density of the paperboard is preferably 0.7 to 1.2 g / m ² measured under the conditions specified in JIS-P-8118. Further, the stiffness of the paperboard is preferably 20 to 200 g as measured under the conditions specified in JIS-P-8143. The pH of the paperboard is preferably 5 to 9 as measured by a hot water extraction method defined in JIS-P-8113.

  As the paperboard according to the present invention, white paperboard is preferable. Examples of white paperboard include Manila balls and white balls. The paperboard used in the tray of the present invention preferably has a water-resistant coating layer described in JP-A-2004-170759.

  The material of the light-shielding moisture-proof bag according to the present invention is a multilayer material having a heat-meltable layer as the lowermost layer and having a light-shielding and moisture-proof function. These materials may be a single material, but in order to improve functionality, it is preferable to stack various different materials to form a multilayer material to enhance functionality. As a method of stacking each material, a method of simultaneously extruding different types of thermoplastic resins (inflation method), a method of creating a multilayer material by bonding different materials with an adhesive (dry lamination), etc. are known. Among these methods, a multilayer material manufactured by a dry lamination method is preferable in order to require higher functionality.

  As a method for producing a multilayer material, a new development of functional packaging material is described in Toray Research Center P48-P51, Convertec 1990.1, 1990.4, 9900.11, 1991.11, 19993.3. Such a general method can be used.

  As the layer structure of the multilayer material, it is composed of a surface layer that serves as a design printing surface from the upper side, an intermediate layer having a moisture-proof or light-shielding function, and a lower layer having a heat welding function. Can also be laminated separately. For example, it is naturally possible to divide into two layers and to provide one layer with a moisture-proof function and the other layer with a light-shielding function. The lower layer may have a light shielding function. The material used for the surface layer is not particularly limited, and the same material as the intermediate layer may be used. Low density polyethylene (LDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE), which are polymer film materials used as general packaging materials, are used as materials for each layer of the multilayer material. Density polyethylene, unstretched polypropylene (CPP), stretched polypropylene (OPP), stretched nylon (ONy), nylon (Ny), PET, cellophane, PVA, stretched vinylon (OV), EVOH, vinylidene chloride (PVDC), etc. can be used. . Of these materials, a multilayer material made by coextrusion with a different polymer film material, a multilayer material made by laminating at different stretching angles, etc. can be used as needed. Furthermore, it is of course possible to combine the density and molecular weight distribution of the polymer film material used to obtain the required physical properties of the light-shielding moisture-proof bag.

  Examples of the polymer film material used for the lower layer of the multilayer material include LDPE and LLDPE produced using a metallocene catalyst. You may mix and use LDPE and LLDPE manufactured by the general manufacturing method in these polymer film materials. Any LDPE and LLDPE produced using these metallocene catalysts can be used as long as they are generally commercially available. For example, Ube Industries 'Umerit, Dow Chemical Japan's AFFINITY, Elite, Nippon Polyolefin's Harmolex LL, Nippon Polychem's Kernel 57L, Mitsui Chemicals' Evolue, Sekisui Film West Japan Co., Ltd. Ramilon Super, Tamapoli Co., Ltd. SE Series, Tosero Co., Ltd. Tosero T. U. X-FCS, T.W. U. X-TCS, Dazai FL manufactured by Nimura Chemical Industry Co., Ltd., Metalloace manufactured by Mitsubishi Chemical Kojin Pax Co., Ltd., WMX manufactured by Wada Chemical Industry Co., Ltd., FV202 manufactured by Sumitomo Chemical Co., Ltd., and the like.

  In addition, a lubricant is preferably added to the lower layer of the multilayer material in order to improve the slipping property with respect to the sheet-like photothermographic material and the tray-shaped protective member to be accommodated. Examples of the lubricant include, but are not limited to, metal soap (zinc stearate, calcium stearate), fatty acid amide, higher fatty acid and the like. The amount of these lubricants to be added is preferably 500 ppm or more (especially 5000 ppm or more) from the viewpoint of slipperiness with respect to the mass of the lower layer, and 20000 ppm or less (particularly from the viewpoint of cost and side effects of the lubricant). 10,000 ppm or less) is preferable.

  In order to obtain the light-shielding properties mentioned as functions required for the light-shielding moisture-proof bag according to the present invention, JP-A-63-85539, JP-A-64-82935, JP-A-1-209134, JP-A-1-94341, It can be obtained by containing a light-shielding substance as described in 2-165140 and 2-219556. The light shielding layer may be provided in any layer with a multilayer material structure, but an intermediate layer and a heat-meltable layer are most preferable. Although it is preferable that it is a layer which has polyethylene as a main component, it is not restricted to this. As the light shielding material to be added to the light shielding layer, it is preferable to contain carbon black from the viewpoint of light shielding properties and cost. It may be a thing. Representative examples of these carbon blacks include MA-600, # 650B, # 41B, # 3150, # 3250, # 3750, # 3950, MA-100 manufactured by Mitsubishi Chemical Industries, Ltd., carbon manufactured by CABOT, VULCAN, XC-72R, BLAC Pearls 700, VULCAN P, Ketjen Black EC manufactured by Lion Akzo Corporation, Asahi HS-500 manufactured by Asahi Carbon Corporation, and the like. Needless to say, carbon black having a sulfur content as described in JP-A-4-121733, 3-179342, and 5-88299 may be used. The amount of carbon black added is preferably 1.5% by mass or more from the viewpoint of light shielding properties when the thickness of the light shielding layer is 50 μm or more, and 7.5% by mass or less from the viewpoint of productivity and cost. It is preferable that

In order to reduce the moisture permeability of the light-shielding moisture-proof bag to 1.0 g / m ² · 24 hours at 40 ° C. and 90% RH or less, an intermediate layer is disclosed in JP-A-8-254793, 8-171177, and 8-122980. 6-250343, 6-122469, 6-95302, 1-93348, 1-252531, 2-186338, 1-267031, 2-235048, 2-278256, JP-A-60-151045, 60-189438, 61-54934, 63-30842, 63-247033, 63-272668, 63-283936, 63-193144, 63-183839, 64-16641, 64-77532, 1-152336, 2-21645, 2- Proof material described in such Patent 4738 can be mentioned.

  Further, in order to protect the intermediate layer from harmful gases, an oxygen absorbing material as described in JP-A-2-56547, a resin mixed with a formaldehyde scavenger as described in JP-A-8-41288, It may contain a cyan gas scavenger as described in Kaihei 4-9047, 3-236050, and 2-244136, zeolite molecular sieve particles described in JP-A-9-152683, and the like.

  The image recording material according to the present invention is not particularly limited, and examples thereof include an X-ray film that performs wet development processing and a heat-developable image photosensitive material that performs heat development processing. Examples of the sheet-like photothermographic material according to the present invention include JP-A Nos. 2002-122959, 2002-107870, 2002-90938, 2002-82416, 2002-82412, 2002-72413, 2002-72407, Those described in 2002-62620 and equivalent can be used. Usually, at least one photosensitive layer is provided, and an antihalation layer (AH layer) is provided below the photosensitive layer (between the support and the photosensitive layer), and a protective layer is applied above the photosensitive layer. Further, a backing layer (BC layer) is coated on the opposite side of the support to the side having the photosensitive layer, and a protective layer is coated thereon. The photosensitive layer contains silver halide, organic silver salt, reducing agent and binder (polymer binder). In the AH layer and BC layer, a dye having high absorption efficiency with respect to the photosensitive wavelength and hardly causing a residual color is present in the binder, and sharpness deterioration is caused by irregular reflection at the constituent layer interface of the sheet-like photothermographic material. And prevent interference fringes. Binders such as the AH layer, BC layer, and protective layer can use the same or different materials as the photosensitive layer. When a dye is used for the BC layer, the AH layer may not be provided.

  The photosensitive silver halide used in the sheet-like photothermographic material according to the present invention can be obtained by any method known in the field of photographic technology such as a single jet or double jet method, for example, an ammonia method emulsion or a neutral method. Further, it can be prepared by any method such as an acidic method. The silver halide preferably has a small grain size and high sensitivity in order to obtain good image quality. This is because the graininess and resolution are good when the particle size is small. However, since the sensitivity is low, a crystal form that is easily sensitized by spectral sensitization or chemical sensitization is preferable.

  The photosensitive silver halide has a transition metal, particularly a metal belonging to Group 6 to Group 10 of the Periodic Table of Elements for the fourth period to the sixth period for illuminance failure, gradation adjustment, sensitivity, fogging, storage stability, and the like. It is preferable that the periodic compound is doped (contained). Specifically, ions such as Rh, Ru, Re, Ir, Os, and Fe, and complexes or complex ions thereof are preferable.

  It is preferable to contain a matting agent in the protective layer or the BC layer on the photosensitive layer, and the material of the matting agent used may be either organic or inorganic. For example, as an inorganic substance, silica, glass powder, or the like can be used as a matting agent. As the organic substance, an organic matting agent such as polystyrene (PSt), polymethacrylate (PMMA), polyacrylonitrile (PAN), or polycarbonate (PC) can be used. The shape of the matting agent may be either a regular shape or an irregular shape, but is preferably a regular shape, and a spherical shape is preferably used. The matting agent preferably has an average particle size of 0.5 μm to 10 μm, more preferably 1.0 μm to 8.0 μm. When the particle size of the matting agent is smaller than the above range, troubles such as sticking and stickiness are likely to occur frequently. When the particle size of the matting agent is increased, haze increases and transparency decreases.

  Supports such as paper, synthetic paper, non-woven fabric, metal foil, polyester such as polyethylene terephthalate (PET) and polyethylene terephthalate (PEN), and plastic films such as polycarbonate (PC) and polypropylene (PP) are used as the support. It is possible, and a composite sheet combining these may be used arbitrarily.

  Hereinafter, although the effect of the present invention is concretely explained by an example, the present invention is not limited to these.

Example 1
A tray was prepared according to the following method.

<Preparation of paperboard>
As shown in Table 1, as a material for a tray body, a flat plate member, and a dish-shaped cushioning member, white paperboard prepared from hardwood bleached kraft pulp with changed basis weight and thickness was prepared as a to m. did. In addition, as the white paperboard, a paper in which the intermediate layer was 100% recycled paper and the upper and lower layers were made of virgin pulp was used, and the surface was coated with clay. The water content measured according to JIS P8127 was 8 ± 1%. The basis weight is measured according to JIS P8118 (1998). The thickness is a value measured using a micro gauge (manufactured by Mitutoyo Corporation) after drying the paperboard in a constant temperature bath at 40 ° C. for 2 hours. The water content is a value measured according to JIS P8127.

<Preparation of tray body>
Using the prepared paperboards a to m, the tray body shown in FIG. 3A was prepared and designated as 1-a to 1-m. As shown in the development of the tray body shown in Fig. 3 (a), punching is performed with a Thomson blade type punching blade at once, and then the portion corresponding to the side wall is crooked by the room temperature bracing method. Then, it was produced by bending along a ruled line with a hot press tester (pressure 1 MPa). In addition, the produced tray main body was set as the dimension which Konica Minolta MG Co., Ltd. product KONICAMINOLTA Medical Film SD-P (size 35cm x 43cm) can stack.

<Preparation of dish-shaped cushioning member>
Using the prepared paperboards a to m, a dish-shaped buffer member shown in FIG. 5A and FIG. 5B was prepared. The height of the dish-shaped buffer member shown in FIG. 5A is such that the position of the surface of the second bottom portion is 14 mm lower than the edge of the sheet-like image recording material position regulating side wall. The diameter of the flange portion of the dish-shaped buffer member was set such that three in the vertical direction and four in the horizontal direction could be arranged in the area of the second bottom (length 35 cm × width 43 cm). Moreover, the diameter of the disk-shaped top part was 68% with respect to the diameter of the collar part. The width of the flat portion of the disk-shaped top was 10.7% with respect to the diameter of the disk-shaped top. The width of the inclined portion of the heel portion was 5.3% with respect to the diameter of the heel portion.

  The inner diameter of the ring-shaped top portion of the dish-shaped buffer member shown in FIG. 5B is the same as the diameter of the hole provided in the first bottom portion of the tray.

<Preparation of flat plate member>
The prepared paperboards a to m were used to prepare a flat plate member shown in FIG. The height of the side wall is 14 mm lower than the edge of the side wall for regulating the position of the sheet-like image recording material at the second bottom formed by the upper surface (flat surface) of the flat plate member when placed on the bottom of the tray body. It was made to become. The flat plate member was produced by the same method as the tray body.

<Humidity adjustment of tray body, dish-shaped buffer member, flat plate member>
Humidity adjustment was performed under conditions of 23 ° C. and 20% RH, and the moisture content of the tray body, the dish-shaped buffer member, and the flat plate member was adjusted to 4 to 5%.

<Production of tray>
The prepared dish-shaped buffer member and flat plate member are fixed to the bottom of each prepared tray main body 1-a to 1-m with a hot-melt adhesive (manufactured by Konishi Co., Ltd .: MP973) and shown in FIG. A tray was prepared as 1-A to 1-M. As shown in FIG. 4, the distance between the end face of the side wall of the flat plate member and the surface of the first bottom portion was 2 mm. As shown in FIG. 7, twelve pieces of dish-shaped buffer members are arranged on the first bottom portion. At this time, the pressure resistance of the second bottom portion was 6500 Pa. The pressure strength indicates a value obtained by measuring the load that the flat plate member can withstand by stacking sheet-like photothermographic materials having an area of 90 to 100% of the area of the second bottom of the tray.

<Production of light-proof moisture-proof bag>
The light-shielding moisture-proof bag uses a multi-layered material consisting of a matte-coated surface coat (2 μm) / nylon-6 (15 μm) / aluminum foil (7 μm) / LDPE (12 μm) / black LLDPE (50 μm) from above. A center seal type light-proof moisture-proof bag shown in FIG. The moisture permeability was 0.01 g / m ² · day as a result of measuring by the measuring method described in JIS K7129-1992.
<Production of packaging>
52 sheets of each photothermographic material (Konica Minolta MG KONICA MINOLTA Medical Film SD-P) were stacked on each of the trays 1-A to 1-M prepared at 23 ° C. and 48% RH. The samples 101 to 113 were prepared by storing in the light-shielding moisture-proof bag and heat-sealing with a Kashiwagi-type vacuum sealing machine while degassing under a reduced pressure condition of 36 kPa.

<Evaluation>
It is attached to the prepared tray body, dish-shaped buffer member, flat plate member, and each of the prepared samples 101 to 113, and stored for 7 days at 23 ° C. and 51% RH. Vibrated at 3 mm for 2 hours. Thereafter, the test pattern image is exposed with a thermal development processor (DRYPRO) manufactured by Konica Minolta MG Co., Ltd., and subjected to thermal development processing at 123 ° C., whether there is any scratch on the sheet-like photothermographic material, Table 2 shows the results of observation according to deformation and evaluation according to the following evaluation rank.

Evaluation rank for ease of molding ○: Easy to bend during molding, no deformation, dimensional range is within ± 0.5mm of tolerance △: Dimension is difficult to bend or easily deformed during molding The range was within ± 0.5 mm of tolerance.

×: Difficult to bend during molding, or deformation occurs and the size range exceeds the allowable range of ± 0.5 mm. Existence of scratches on the sheet-like photothermographic material ○: Scratches are observed in the photothermographic material No △: Slight scratch that does not interfere with diagnosis is observed ×: Scratch that interferes with diagnosis is observed Second deformation at the bottom ○: Deformation is not observed △: There is no practical problem X: Deformation that causes practical problems is observed

  The effectiveness of the present invention was confirmed.

Example 2
Sample No. 1 prepared in Example 1 was used. 105 was prepared under the same conditions except that the moisture content of the tray main body, the dish-shaped buffer member, and the flat plate member was changed as shown in Table 3, and a sample No. 105 was prepared. 201-208. In addition, the change of the moisture content was put into a 50 degreeC drying room, and it adjusted so that it might become each moisture content. The water content was measured according to JIS P8127. In addition, each sample No. Two sets of 201 to 208 were prepared. One set was used for evaluation, and the rest was stored in a cool dark place as a reference sample.

Evaluation Each produced package No. After storing 201-208 at 40 ° C. for 5 days, after exposure by the same method as in Example 1, the heat development treatment was performed in the same manner as in Example 1, and the density of the unexposed part (fog density) As a result of evaluating the characteristics such as the maximum concentration, good results were obtained without any problems. At the same time, each reference sample was exposed and heat-developed under the same conditions, and the results of evaluating the variation with respect to the reference sample according to the following evaluation rank are shown in Table 3.

Density (fogging density) evaluation rank of unexposed area ○: Same as the reference sample Δ: Less than 5 to 10% density is higher than the reference sample ×: Highest evaluation rank is 10% or more higher than the reference sample ○: Same as the reference sample △: Less than 5 to 10% of the concentration is lower than the reference sample ×: The concentration is 10% or more lower than the reference sample

  Sample No. No. 201 showed good results with no change in fog density and maximum density, but slight deformation of the second bottom was observed, and it was confirmed that it was necessary to be careful. The effectiveness of the present invention was confirmed.

Example 3
Example 1 Sample No. 110, except that the distance from the end of the sheet-shaped image recording material position regulating side wall to the second bottom formed on the upper surface (flat surface) of the flat plate member was changed as shown in Table 3. A package was produced under the same conditions as Samples 301-307.

Evaluation The number of sheets of photothermographic material that can be stacked on the produced samples 301 to 307 is set to suit the process suitability at the time of manufacturing the package, the suitability in the image recording apparatus, and the ease of molding as in the first embodiment. Table 4 shows the results of evaluation, evaluation of process suitability and suitability in the image recording apparatus according to the following evaluation rank, and ease of molding according to the same evaluation rank as in Example 1.

Evaluation rank of process suitability ○: Packaging can be manufactured according to the normal operation manual. △: Packaging is manufactured to the extent that some care is required when stacking sheet-shaped photothermographic materials. Possible ×: Stacking of sheet-shaped photothermographic material becomes difficult, making packaging difficult to evaluate Evaluation of suitability in the image recording apparatus ○: No occurrence of sheet-shaped photothermographic material conveyance error △: The sheet-like photothermographic material is slightly unstable, but no error occurs, and it can be conveyed without any practical problems. X: A sheet-like photothermographic material conveyance error occurs. Difficult to use

  Sample No. In 301, the number of sheets that can be stacked decreases, and the frequency of tray replacement may increase. Sample No. In 307, the number of sheets that can be stacked increases, and there are cases where the frequency of remaining as unused in the image recording apparatus increases.

Example 4
Example 1 Sample No. Samples 401 to 407 were prepared under the same conditions except that the pressure resistance of the second bottom portion of the tray was changed as shown in Table 5 when 110 was prepared. The pressure strength was adjusted by appropriately changing the size and number of the dish-shaped buffer members disposed on the first bottom. The pressure strength indicates a value measured by stacking sheet-shaped photothermographic materials on a tray and adjusting the number of sheets that the second bottom portion is deformed.

Evaluation After the vibration test was performed on the prepared samples 401 to 407 under the same conditions as in Example 1, exposure and heat development treatment were performed under the same conditions as in Example 1, and whether or not the sheet-like photothermographic material was damaged. Table 5 shows the results of observation according to the deformation of the second bottom and evaluation according to the same evaluation rank as that of Example 1.

  The effectiveness of the present invention was confirmed.

Example 5
Example 1 Sample No. As shown in FIG. 4, a package was prepared under the same conditions except that the distance between the end surface of the side wall of the flat plate member and the surface of the first bottom portion was changed as shown in FIG. 501-507.

Evaluation After the vibration test was performed on the prepared samples 501 to 507 under the same conditions as in Example 1, exposure and heat development processing were performed under the same conditions as in Example 1, and whether or not the sheet-like photothermographic material was damaged. Table 6 shows the results of observation according to the deformation of the second bottom and evaluation according to the same evaluation rank as that of Example 1.

The effectiveness of the present invention was confirmed.
Example 6
Sample No. 1 prepared in Example 1 was used. 110 was prepared under the same conditions except that the ratio of the diameter of the flange portion of the dish-shaped buffer member to be used and the diameter of the disk-shaped top portion was changed as shown in Table 7, and the sample was prepared. No. 601-607.

Evaluation After the vibration test was performed on the prepared samples 601 to 607 under the same conditions as in Example 1, exposure and heat development processing were performed under the same conditions as in Example 1, and whether or not the sheet-like photothermographic material was damaged. Table 7 shows the results of observation according to the deformation of the second bottom and evaluation according to the same evaluation rank as in Example 1.

  The effectiveness of the present invention was confirmed.

It is a schematic perspective view of the package using the conventional tray. It is a schematic perspective view of the package using the tray of the present invention. It is a disassembled schematic perspective view of the tray of this invention shown in FIG. FIG. 4 is a schematic cross-sectional view along AA ′ in FIG. 3. It is an expansion schematic sectional drawing of the dish-shaped buffer member shown in FIG. FIG. 6 is a plan view of the dish-shaped buffer member shown in FIG. 5. It is a schematic perspective view which shows an example which has arrange | positioned the dish-shaped buffer member shown in FIG. 3 in the 1st bottom part of the tray. It is the schematic of the flat plate member of another shape.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Package 2, 5 Tray 3 Image recording material 4 Light-shielding moisture-proof bag 501 Main body 502 First bottom 507 Second bottom 503-506 Sheet-shaped image recording material position regulating side walls 6, 6a Flat plate member 602a, 602b Hole 604a to 604d Side wall 7, 7a, 7b Dish-shaped buffer member 7a1 Disc-shaped top 7b1 Ring-shaped top 7a2, 7b2 Inclined side wall 7a3, 7b3 Gutter

Claims (13)

In a tray for sheet-like image recording material having a rectangular first bottom portion on which sheet-like image recording materials are stacked, and a sheet-like image recording material position regulating side wall raised from the peripheral edge of the first bottom portion,
Having a second bottom on the first bottom;
The second bottom portion includes a flat plate member having a rectangular flat surface and a side wall provided on the peripheral portion of the flat surface toward the back surface side of the flat surface.
Formed on the dish-shaped buffer member disposed on the surface of the first bottom portion by placing the back surface of the flat surface and the surface of the first bottom portion facing each other,
A tray for sheet-like image recording material, wherein the sheet-like image recording material is stacked on the surface of the second bottom portion. 2. The tray for sheet-like image recording material according to claim 1, wherein the distance between the end surface of the side wall and the surface of the first bottom portion is 3 mm or less. 3. The tray for sheet-like image recording material according to claim 1, wherein the second bottom portion is disposed at a position lower by 5 to 25 mm than the edge of the side wall for regulating the position of the sheet-like image recording material. The tray for sheet-like image recording material according to any one of claims 1 to 3, wherein the pressure resistance of the second bottom portion is 100 to 10,000 Pa. 5. The tray for sheet-like image recording material according to claim 1, wherein a side wall of the flat plate member is fixed to a side wall for regulating the position of the sheet-like image recording material. The dish-shaped cushioning member includes a circular top, an inclined side wall that is inclined outwardly from the periphery of the top, and a flange that is integrally provided at an end portion around the inclined side wall. The tray for sheet-like image recording material according to any one of claims 1 to 5, wherein the tray is placed on the surface of the first bottom portion with the top side facing up. The tray for a sheet-like image recording material according to any one of claims 1 to 6, wherein the dish-shaped buffer members are disposed at at least four corners of the first bottom portion. The material is a paper having a basis weight of 100 to 1000 g / m ² , a thickness of 0.4 to 1.0 mm, and a moisture content of 0.1 to 5% by mass. A tray for sheet-like image recording material according to 1. 9. The tray for sheet-like image recording material according to claim 8, wherein the paper contains 50% by mass or more of recycled paper. The sheet-like image recording material tray according to any one of claims 1 to 9, wherein the sheet-like image recording material is a photothermographic material. The sheet-like image recording material is placed on the tray for sheet-like image recording material according to any one of claims 1 to 10, and the moisture permeability is 1.0 g / m ² · 24 h (40 ° C · 90% RH). A sheet-shaped image recording material package, which is packaged in the following light-proof moisture-proof bag. The sheet-shaped image recording material package according to claim 11, wherein the light-proof moisture-proof bag is sealed under a reduced pressure condition of 20 to 90 kPa. The sheet-like image recording material package according to claim 11 or 12, wherein the sheet-like image recording material is a photothermographic material.

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