JP2005284263A - Photosensitive thermal development recording material, its case, and developing method and manufacturing method of the photosensitive thermal development recording material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photosensitive thermal development recording material which is easily handled and does not require working in a dark room, and to provide a case for the material and a development method and a manufacturing method of the photosensitive thermal development recording material. <P>SOLUTION: The case has a case body, having a housing section to house a photosensitive thermal development recording material having an image forming layer containing a photosensitive silver halide; a non-photosensitive organic silver salt; a reducing agent and a binder on at least one surface of a supporting body, wherein at least the surface of the body is made of a light-shielding material. The housing section is provided with a sensitized member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a photosensitive heat-developable recording material on which a latent image is formed by X-ray irradiation, a container thereof, a developing method and a manufacturing method of the photosensitive heat-developable recording material.

In recent years, thermal development apparatuses and thermal development recording apparatuses using dry systems that do not perform wet processing have been proposed. In such a heat development apparatus or heat development recording apparatus, a photosensitive and / or heat-sensitive recording material (photosensitive heat-sensitive recording material) or a film-like recording material containing a heat-developable photosensitive material (hereinafter, photosensitive) is used as a recording medium. A heat-developable recording material).
As such a dry system, there is an X-ray imaging apparatus used in a medical facility such as a hospital. An X-ray imaging apparatus is configured to hold a photosensitive heat-developable recording material in a cassette, irradiate X-rays from an X-ray tube, and transmit X-rays to a subject to form a latent image on the photosensitive heat-developable recording material. (For example, see Patent Documents 1 and 2).

JP-A-4-256946 JP 60-153000 A

Since the photosensitive heat-developable recording material is exposed to light when handled in a bright room, it is necessary to perform an operation of setting the photosensitive heat-developable recording material in the cassette in the dark room before performing X-ray photography. However, there is a request to avoid working in the dark room as much as possible, especially in facilities that do not frequently perform X-ray imaging, such as small hospitals, from the viewpoint of effective use of the place, it is said that you do not want to have dark room equipment as much as possible There is a request.
The present invention has been made in view of such circumstances, and its purpose is to develop a photosensitive heat-developable recording material that does not require work in a dark room and is easy to handle, its container, and photosensitive heat-developable recording material. It is to provide a method and a manufacturing method.

  The object of the present invention is to provide a photosensitive heat-developable recording material provided with an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of a support. A photosensitive heat-developable recording material container having a housing part for housing a photosensitive heat-developable recording material, and having a container body made of a light-shielding material at least on the surface, and being provided on the inner surface of the housing part. This is achieved by a photosensitive heat-developable recording material container characterized in that a photosensitive member is provided.

  The photosensitive heat-developable recording material container includes a container body made of a light-shielding material. By storing the photosensitive heat-developable recording material in the container, the photosensitive heat-developable recording material is stored in the container. In addition to preventing exposure to light in a bright room, the photosensitive heat-developable recording material is not directly touched by hands, so that it is possible to avoid contamination such as fingerprints. In addition, since the sensitizing member is mounted on the container, X-ray imaging can be performed while the photosensitive heat-developable recording material is stored in the container, and when the X-ray imaging apparatus performs imaging, There is no need for a cassette for holding the photosensitive heat-developable recording material.

  In the photosensitive heat-developable recording material container, the sensitizing member is preferably affixed to the inner surface of the housing portion facing the image forming layer of the photosensitive heat-developable recording material.

  By doing so, it is possible to prevent the sensitizing member from moving inside the housing portion and causing twisting and wrinkling when the recording material is inserted into the housing body or taken out from the housing body.

  In the photosensitive heat-developable recording material container, a pair of pocket portions is partitioned by a partition portion, the photosensitive heat-developable recording material is held in one of the pair of pocket portions, and the sensitization is performed on the other side. Preferably, the member is held, and the partition portion is formed so that a window portion is opened at a portion corresponding to a portion where a latent image is formed.

  In this photosensitive heat-developable recording material container, the photosensitive heat-developable recording material held in one of the pair of pocket portions is replaced for each X-ray imaging, and is relatively expensive held in the other pocket portion. By repeatedly using the sensitizing member, the container can be repeatedly used (recycled).

  It is preferable that the light-shielding material blocks colored light having a wavelength of 500 nm or less.

  In this way, colored light having a wavelength of 500 nm or less is blocked, and a transparent or translucent material is used as a material having a photosensitive filter function, so that the state of the recording material accommodated in the container can be externally determined. It can be visually recognized. For this reason, when carrying out thermal development by directly loading the container into the thermal development apparatus, the state of development can be confirmed without taking out the recording material from the container, which is convenient.

  Furthermore, the object of the present invention can be loaded into an X-ray imaging apparatus that holds a photosensitive heat-developable recording material container and irradiates the photosensitive heat-developable recording material with X-rays to form a latent image. Achieved by cassette.

  This cassette can increase the degree of adhesion between the recording material and the sensitizing member accommodated in the container. Further, it is not necessary to attach a sensitizing member inside the cassette as in the conventional case, and maintenance such as cleaning of the cassette becomes easy.

  Furthermore, the object of the present invention is to provide photosensitive heat development in which an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder is provided on at least one surface of a support. A method for developing a recording material, wherein the photosensitive heat-developable recording material is accommodated in a container having at least a surface made of a light-shielding material, and the container is provided with a sensitizing member. This is achieved by a method for developing a photosensitive heat-developable recording material, characterized in that the latent image is visualized by heat development in a state where the photosensitive heat-developable recording material is accommodated in the container.

  In this developing method, since the container is made of a light shielding material, the photosensitive heat-developable recording material accommodated in the container can be handled in a bright room, and the sensitizer is provided in the container. Therefore, there is no need for a cassette having a screen that functions as a sensitizing member as in the prior art. By performing heat development while the photosensitive heat-developable recording material is accommodated in the container, the operation of loading the photosensitive heat-developable recording material into the cassette can be omitted, and in particular, the number of X-ray imaging is small. It is easy to use in an environment (for example, a small medical site such as a practitioner).

  Furthermore, the object of the present invention is to provide a support and an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of the support. And a sensitizing layer is formed on the surface of the image forming layer, and the surface of the sensitizing layer is covered with a light-shielding layer.

  Since this photosensitive heat-developable recording material is covered with a light-shielding layer, it can be handled in a bright room even if it is not housed in a container made of a light-shielding material or a conventional cassette, so there is no need for work in a dark room. Convenient in terms. Further, at the time of X-ray imaging, the photosensitive heat development recording material can be irradiated with X-rays, and at the time of heat development, the recording material can be directly loaded into a heat development apparatus to perform heat development processing. After the heat development, the developed recording material can be obtained by peeling off the light shielding layer and the sensitizing layer.

  Furthermore, the object of the present invention is to provide photosensitive heat development in which an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder is provided on at least one surface of a support. A method for producing a material, wherein an image forming layer is formed on a supplied support, an sensitizing layer is laminated on the surface of the image forming layer, a light shielding layer is laminated on the surface of the sensitizing layer, and then the support Is achieved by a method for producing a photosensitive heat-developable recording material, characterized in that

  In this manufacturing method, in one manufacturing process, a step of forming an image forming layer on a support, a step of laminating a sensitizing layer on the surface of the image forming layer, and a light shielding layer on the surface of the sensitizing layer are laminated. Since the method includes a step and a step of cutting the support, a photosensitive heat-developable recording material that can be handled in a bright room can be efficiently produced.

  According to the present invention, it is possible to provide a photosensitive heat-developable recording material that does not require work in a dark room and is easy to handle, a container for the photosensitive heat-developable recording material, and a developing method and manufacturing method for the photosensitive heat-developable recording material.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a photosensitive heat-developable recording material, a container for the same, a developing method for the photosensitive heat-developable recording material, and a manufacturing method according to the present invention will be described below with reference to the drawings.
FIG. 1 is a view for explaining a first embodiment of a photosensitive heat-developable recording material container according to the present invention. The container 1 contains a photosensitive heat-developable recording material (hereinafter also referred to as a recording material) F on which a latent image is formed by X-ray irradiation.

  The recording material F is provided with an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of a support. A latent image is formed in advance on the image forming layer, and the latent image on the image forming layer is visualized by subjecting the recording material F to heat development. Hereinafter, the image forming layer is also referred to as a photosensitive layer.

  The container 1 has a container body 1a and a container 2 provided inside the container body 1a for containing a recording material. The container body 1a is a long bag-like member having a bottom, and has a configuration in which the recording material F can be inserted from the opening 3 formed at one end. The container 1 is a member having at least a surface made of a light shielding material in the container body 1a. As the light-shielding material, for example, a metal such as aluminum foil, a resin made of black, or a composite member thereof can be used.

  A recording material F and sensitizing members 5 disposed on both sides of the recording material F inside the storage part 2 are inserted into the storage part 2 of the storage body 1. After the recording material F and the sensitizing member 5 are accommodated in the accommodating portion 2, the folded portion 4 is formed in the accommodating body 1a by repeatedly folding the end on the side where the opening 3 is formed with a predetermined width. Thus, the opening 3 is shielded, and the light shielding property inside the housing portion 2 is ensured. When taking out the recording material F from the container 1, the recording material F can be taken out from the opening 3 that is opened by folding the folded portion 4. In addition, in the container 1 of this embodiment, it is not limited to the folding | returning part 4, For example, you may provide the chuck | zipper part which can open and close the edge of the side in which the opening 3 was formed with a chuck | zipper.

  The housing 1 is not limited to the configuration in which the sensitizing member 5 is housed in the housing portion 2 as in the present embodiment. FIG. 2 is a cross-sectional view showing another embodiment of the container of the present embodiment. As shown in FIG. 2, the container 1 may be configured to be affixed to the inner surface of the container 2. In this way, when the recording material F is inserted or taken out, it is possible to prevent the sensitizing member 5 from moving inside the housing portion 2 and causing twists and wrinkles.

  The container 1 includes a container body 1a made of a light-shielding material. By storing the recording material F in the container 1, the recording material F is prevented from being exposed to light in a bright room. In addition, since the hand does not directly touch the recording material F, it is possible to avoid contamination such as fingerprints. Further, since the sensitizing member 5 is mounted on the container 1, X-ray imaging can be performed while the recording material F is stored in the container 1, and when imaging is performed in the X-ray imaging apparatus, It is not necessary to provide a screen having the same function as the sensitizing member on the cassette side holding the recording material.

  FIG. 3 is an overall perspective view showing a cassette according to the present invention. As shown in FIG. 3, the cassette 11 is for accommodating and holding the recording material F, loading the X-ray imaging apparatus, and irradiating the held recording material with X-rays.

  As shown in FIG. 3, the cassette 11 includes a cassette body 12 having a rectangular bottom surface 12 a in surface contact with the recording material F and a rib 14 erected so as to surround the peripheral edge of the bottom surface 12 a. Yes. Further, the cassette 11 can be provided with a recording material F at a portion surrounded by the ribs of the main body 12 and includes a lid portion 13 that opens / shields the portion. When setting the recording material F in the cassette 11, the lid portion 13 is opened, the recording material F is disposed on the cassette body 12, and the lid portion 13 is closed.

  By accommodating the container 1 in the cassette body 12 and closing the lid 13, the degree of adhesion between the recording material and the sensitizing member accommodated in the container 1 can be increased.

  Since the recording material F includes the sensitizing member 5, the bottom surface 12 a of the cassette 11 and the inner surface of the lid portion 13 (the surface on the bottom surface 12 a side when the lid portion 13 is closed) are provided as in the conventional case. There is no need to provide a screen. For this reason, maintenance such as cleaning of the cassette becomes easy.

Next, the photosensitive heat-developable recording material according to the present invention will be described with reference to the drawings.
FIG. 4 is a cross-sectional view of the photosensitive heat-developable recording material according to the present invention. As shown in FIG. 4, the recording material 40 includes a support 41 and photosensitive layers 42 provided on both sides of the support 41.

  Further, in the recording material 40, a sensitizing layer 43 is provided on the surface of the photosensitive layer. The recording material 40 may have a structure in which the photosensitive layer 42 is provided only on one side of the support. Of the photosensitive layers 42 provided on both sides of the support 41, one of the photosensitive layers 42 is provided. The sensitizing layer 43 may be provided only on the surface.

Hereinafter, the manufacturing process of the photosensitive heat-developable recording material shown in FIG. 4 will be described. FIG. 5 is a diagram conceptually illustrating the manufacturing process of the photosensitive heat-developable recording material of FIG.
As shown in FIG. 5, the support body 41 is unwound from the support body roll R11. A photosensitive material is applied to both sides of the unwound support 41 to form a photosensitive layer 42. A sensitizer original roll R13 is disposed above and below the conveyance path of the support 41 on which the photosensitive layer 42 is formed. The sensitizing material (sensitizing layer 43) unwound from the sensitizing material roll R13 is pressed against both surfaces of the support 41 by the suction roller pair 27 while being guided by the guide roller 25, and is arranged downstream in the transport direction. Heat sealing is performed by a pair of thermocompression-bonding rollers 29 provided. Thus, the support 41 having the sensitizing layers 43 provided on both the front and back sides is cut to a predetermined size on the downstream side of the heat press roller 29 to be the recording material 40.

  In this method of manufacturing the recording material 40, a pair of sensitizing layers 43 are laminated on both sides of the support 41 immediately after applying the photosensitive material, and after the lamination, the support 41, the photosensitive layer 42 and the sensitizing layer 43 are cut. To do.

  The recording material 40 obtained by cutting is accommodated in the container 21. The housing 21 is made of a light shielding material at least on the outside, and the configuration thereof is basically the same as that of the housing 1 described with reference to FIG. 1, but is different in that the sensitizing member 5 is not provided in the housing body.

A process of performing X-ray imaging on a container that accommodates the recording material obtained in the recording material manufacturing process shown in FIG. 5 will be described. FIG. 6 is a diagram schematically illustrating a process of performing X-ray imaging on a recording material container.
The recording material 40 accommodated in the container 21 is irradiated with X-rays X to form a latent image on the photosensitive layer of the recording material 40. After the X-ray irradiation, the container 21 containing the recording material 40 is thermally developed by the heat developing device 48. After the thermal development, the recording material 40 is taken out from the container 21, and the sensitizing layer 43 is peeled off from the photosensitive layer 42 (support 41).

  The photosensitive heat-developable recording material 40 shown in FIG. 4 has a structure in which a sensitizing layer 43 is provided on the surface of the photosensitive layer 42. In the same manufacturing process, the photosensitive layer 42 is formed on the support 41 and the photosensitive layer 42 is formed. Since the sensitizing layer 43 may be laminated on the surface, the manufacture is easy. Further, since the photosensitive heat-developable recording material 40 is provided with the sensitizing layer 43, it is not necessary to attach a screen functioning as a sensitizing member inside a cassette provided for an X-ray imaging apparatus as in the prior art.

  Further, as shown in FIG. 5, in one manufacturing process, the method for manufacturing a photosensitive heat-developable recording material according to the present invention includes a step of forming a photosensitive layer 42 on a support 41 and a surface of the photosensitive layer 42. Since the method includes the step of laminating the sensitizing layer 43 and the step of cutting the support 41, the photosensitive heat-developable recording material can be produced efficiently.

FIG. 7 is a perspective view showing a second embodiment of the photosensitive heat-developable recording material container according to the present invention.
As shown in FIG. 7, the container 31 houses a container body 31a and a recording material (for example, the recording material F shown in FIG. 1) provided in the container body 31a. And an accommodating portion 32 for carrying out the operation. The container main body 31a is a long bag-like member having a bottom, and is configured such that the recording material F can be inserted through an opening 34 formed at one end. The container 31 is a member having at least a surface made of a light shielding material in the container body 1a. As the light shielding material, the same materials as described above can be used.

  The housing portion 31a of the housing body 31 of the present embodiment is provided with a partition portion 35 formed integrally with the inner periphery of the housing portion 32 so as to partition the housing portion 32 into two sections. The opening 34 is also divided into two, an upper surface side opening 36 and a lower surface side opening 37, by the partition portion 35.

  In other words, the space defined by the partition portion 35 in the storage portion 32 becomes a pair of pocket portions, and the pair of pocket portions are respectively separated from the outside of the storage body 31 via the upper surface side opening 36 and the lower surface side opening 37. Each communicates.

  The accommodating portion 32 of the present embodiment can hold a photosensitive heat-developable recording material (for example, the recording material F of FIG. 1 can be used; hereinafter omitted) out of a pair of pocket portions, and on the other hand, a sensitizing member. 5 can be held.

  The partition portion 35 is formed with a window portion 35a having a size corresponding to the type of the recording material F and the size and position of the latent image formed on the recording material by X-ray irradiation.

  The number of pocket portions defined inside the accommodating portion 32 of the accommodating body 31 is not limited to two as in this embodiment, and may be divided into three or more by the partition portion 35.

  FIG. 8 is a cross-sectional view showing a state in which the photosensitive heat-developable recording material and the sensitizing material are accommodated in the container shown in FIG. As shown in FIGS. 7 and 8, the recording material F and the sensitizing material 5 are held in the storage portion 32 of the storage body 31 in a state of being partitioned by the partition portion 35. The container 31 has a window 35a formed at the center of the partition 35, and the recording material F and the sensitizing material 5 are exposed to each other and are in direct contact with each other at a position opened by the window 35a. It is a configuration. For this reason, when the container 31 is irradiated with X-rays, a latent image is formed while the reaction of the photosensitive layer is intensified by the sensitizing member 5 in the portion of the recording material F opened by the window 35a.

  FIG. 9 is a diagram schematically illustrating the steps of X-ray imaging and heat development using the photosensitive heat-developable recording material container shown in FIGS. The recording material F is accommodated in one of the pair of pockets of the accommodating body 31, and the sensitizing member 5 is accommodated in the other. The container 31 containing the recording material F and the sensitizing member 5 is irradiated with X-rays X to form a latent image on the photosensitive layer of the recording material F. In X-ray imaging, X-rays may be irradiated in a state where the accommodating portion 31 is accommodated and held in a cassette (see FIG. 3). Next, the container 31 is directly loaded into the heat developing apparatus, and heat development is performed. After the thermal development, the recording material F is taken out from the container 31. At this time, if the sensitizing member 5 is configured to be usable a predetermined number of times, it is possible to repeatedly use (recycle) the container 31 by accommodating the new recording material F while being accommodated in the pocket portion as it is. it can.

  Next, a third embodiment of the photosensitive heat-developable recording material according to the present invention will be described. In the embodiments described below, the description of members having the same configuration / action as the members already described is simplified or omitted. The basic structure of the container of the present embodiment is the same as the structure of the container shown in FIG. 1, but the container body is made of a material having a photosensitive filter function for blocking the photosensitive wavelength as a light shielding material. Is different. As a material having a photosensitive filter function, for example, a light-shielding material that blocks colored light having a wavelength of 500 nm or less can be used.

  In this embodiment, by using a light-shielding material that blocks colored light having a wavelength of 500 nm or less, the state of the recording material accommodated in the container can be visually recognized from the outside of the container. For this reason, when carrying out thermal development by directly loading the container into the thermal development apparatus, the state of development can be confirmed without taking out the recording material from the container, which is convenient.

  Next, the fluorescent intensifying screen (radiation intensifying screen) of the present invention will be described. The radiation intensifying screen includes, as a basic structure, a support and a phosphor layer formed on one side thereof. The phosphor layer is a layer in which a phosphor is dispersed in a binder. In general, a transparent protective film is provided on the surface of the phosphor layer opposite to the support (the surface not facing the support), and the phosphor layer is chemically altered or Protects against physical shock.

In the present invention, preferred phosphors include those shown below.
Tungstate phosphors (CaWO ₄ , MgWO ₄ , CaWO ₄ : Pb, etc.), terbium activated rare earth oxysulfide phosphors [Y ₂ O ₂ S: Tb, Gd ₂ O ₂ S: Tb, La ₂ O ₂ S: Tb, (Y, Gd) ₂ O ₂ S: Tb, (Y, Gd) O ₂ S: Tb, Tm, etc.], terbium-activated rare earth phosphate phosphors (YPO ₄ : Tb, GdPO ₄ : Tb, LaPO ₄ : Tb, etc.), terbium activated rare earth oxyhalide phosphors (LaOBr: Tb, LaOBr: Tb, Tm, LaOCl: Tb, LaOCl: Tb, Tm, LaOBr: Tb, GdOBr: Tb, GdOCl: Tb, etc.) , Thulium activated rare earth oxyhalide phosphors (LaOBr: Tm, LaOCl: Tm, etc.), barium sulfate phosphors [BaSO ₄ : Pb, BaSO ₄ : Eu ²⁺ , (Ba , Sr) SO ₄ : Eu ²⁺ etc.], divalent europium activated alkaline earth metal phosphate phosphor [(Ba ₂ PO ₄ ) ₂ : Eu ²⁺ , (Ba ₂ PO ₄ ) ₂ : Eu ²⁺ Etc.] Divalent europium activated alkaline earth metal fluoride halide phosphor [BaFCl: Eu ²⁺ , BaFBr: Eu ²⁺ , BaFCl: Eu ²⁺ , Tb, BaFBr: Eu ²⁺ , Tb, BaF ₂ BaCl · KCl: Eu ²⁺ , (Ba, Mg) F ₂ .BaCl · KCl: Eu ²⁺ etc.], iodide phosphors (CsI: Na, CsI: Tl, NaI, KI: Tl etc.), sulfide Physical phosphors [ZnS: Ag (Zn, Cd) S: Ag, (Zn, Cd) S: Cu, (Zn, Cd) S: Cu, Al, etc.], hafnium phosphate phosphors (HfP ₂ O ₇ : Cu, etc.), was also added various activator as YTaO ₄ and the light emission center to it . However, the phosphor used in the present invention is not limited to these, and any phosphor that emits light in the visible or near ultraviolet region when irradiated with radiation can be used.

  The fluorescent intensifying screen used in the present invention is preferably filled with a phosphor with an inclined particle size structure. In particular, it is preferable to apply phosphor particles having a large particle size to the surface protective layer side, and to apply phosphor particles having a small particle size to the support side, and those having a small particle size are 0.5 to 2.0 μm and large. The thing of a particle size has the preferable range of 10-30 micrometers.

  In addition, since the fluorescent intensifying screen used in the present invention is developed at a temperature of 80 to 250 ° C., the support PET (polyethylene terephthalate) is a heat-resistant grade type, and the phosphor is molded with a transparent silicone resin. It is preferable to do.

(Combination with ultraviolet fluorescent screen)
As an image forming method using the photothermographic material of the present invention, a method of forming an image by combining with a phosphor having a main peak preferably at 400 nm or less can be used. More preferably, a method of forming an image in combination with a phosphor having a main peak at 380 nm or less is preferable. Either a double-sided sensitive material or a single-sided sensitive material can be used as an assembly. As the screen having a main emission peak at 400 nm or less, the screens described in JP-A-6-11804 and WO93 / 01521 are used, but not limited thereto. As a technique of ultraviolet crossover cut (double-sided photosensitive material) and antihalation (single-sided photosensitive material), the technique described in JP-A-8-76307 can be used. As the ultraviolet absorbing dye, the dye described in Japanese Patent Application No. 2000-320809 is particularly preferable.

Next, a fourth embodiment of the photosensitive heat-developable recording material container according to the present invention will be described.
FIG. 10 is a perspective view showing a photosensitive heat-developable recording material container according to the present embodiment. 11 is a cross-sectional view taken along the line AA of the photosensitive heat-developable recording material container shown in FIG. As shown in FIGS. 10 and 11, the container 51 of the present embodiment includes a container body 51 a and a container 52 provided inside the container body 51. The container body 51 a is a long bag-like member having a bottom, and has an opening 54 formed at one end, and the recording material F and the sensitizing member 5 can be inserted through the opening 54. The container 51 is a member in which at least the surface of the container body 51a is made of the light shielding material.

  The container body 51a of the container 51 of the present embodiment is provided with two partition parts 55 and 56 that are formed integrally with the inner periphery of the container part 52 so as to partition the container part 52 into three spaces. Yes. The accommodating portion 52 is divided into three pocket portions 52a, 52b, and 52c by the partition portions 55 and 56.

  In addition, window portions 55a and 56a are formed in the partition portions 55 and 56, respectively. The window portions 55a and 56a have dimensions adapted to the type of the recording material F and the size and position of the latent image formed on the recording material F by X-ray irradiation.

  Of the three pocket portions 52a, 52b, and 52c, the outer two pocket portions 52a and 52c each contain the sensitizing member 5, and the inner pocket portion 52b contains the recording material F.

  The container 51 of the present embodiment accommodates a recording material F having a photosensitive layer formed on both sides, and the sensitizing member 5 accommodated in the pocket portions 52a and 52c on both sides of the recording material F is used for these photosensitive layers. The latent image by X-ray irradiation is clearly formed.

Next, another embodiment of the photosensitive heat-developable recording material according to the present invention will be described.
FIG. 12 is a cross-sectional view showing a photosensitive heat-developable recording material container according to this embodiment. As shown in FIG. 12, the photosensitive heat-developable recording material 60 includes a support 61, photosensitive layers 62 provided on both sides of the support 61, and sensitization formed on the surfaces of these photosensitive layers 62. Layer 63.

  Further, the surface of each of the sensitized layers 63 of the photosensitive heat development recording material 60 is covered with a light shielding layer 64.

  Since this photosensitive heat-developable recording material 60 is covered with a light-shielding layer 64, it can be handled in a bright room even if it is not housed in a container made of a light-shielding material or a conventional cassette. It ’s easy to use. Further, at the time of X-ray imaging, the photosensitive heat development recording material 60 can be irradiated with X-rays, and at the time of heat development, the recording material 60 is directly loaded into a heat development apparatus to perform heat development processing. After the heat development, the light-shielding layer 64 and the sensitizing layer 63 are peeled off, whereby the developed recording material 60 can be obtained.

Next, the manufacturing process of the photosensitive heat development recording material shown in FIG. 12 will be described.
FIG. 13 is a diagram conceptually illustrating the manufacturing process of the photosensitive heat-developable recording material of FIG. As shown in FIG. 13, the support body 61 is unwound from the support body roll R61. A photosensitive material is applied to both sides of the unwound support 61 to form a photosensitive layer 62. A sensitizer original fabric roll R63 is disposed above and below the conveyance path of the support 61 on which the photosensitive layer 62 is formed. The sensitizing material (sensitized layer 63) unwound from the sensitizing material roll R63 is pressed against both surfaces of the support 61 by the suction roller pair 67 while being guided by the guide roller 65, and is arranged downstream in the transport direction. Heat sealing is performed by a pair of thermocompression-bonding rollers 69 provided. Thus, the light-shielding material roll R64 is disposed above and below the conveyance path of the support 61 provided with the sensitizing layers 63 on both the front and back sides. The light shielding material (light shielding layer 64) unwound from the sensitizing material roll R64 is pressed against both surfaces of the support 61 by the suction roller pair 72 while being guided by the guide roller 71, and is disposed downstream in the transport direction. The pair of heat press rollers 73 are heat sealed. The support 61 provided with the light shielding layers 64 on both the front and back sides is cut to a predetermined size on the downstream side of the heat press roller 73 to become the recording material 60.

  In the manufacturing method of the recording material F, in one manufacturing process, the step of forming the photosensitive layer 62 on the support 61, the step of laminating the sensitizing layer 63 on the surface of the photosensitive layer 62, Since the method includes the step of laminating the light shielding layer 64 on the surface and the step of cutting the support 61, the photosensitive heat development recording material 60 that can be handled in the bright room shown in FIG. 12 can be efficiently manufactured. it can.

The photothermographic material of the present invention may be developed by any method, but is usually developed by raising the temperature of the photothermographic material exposed imagewise. The preferred development temperature is 80 to 250 ° C, more preferably 100 to 140 ° C.
The development time is preferably 1 to 60 seconds, more preferably 5 to 30 seconds, and particularly preferably 5 to 20 seconds.

  A plate heater method is preferred as the heat development method. The heat development method using a plate heater method is preferably a method described in JP-A-11-133572, in which a heat-developable photosensitive material on which a latent image has been formed is brought into contact with a heating means in a heat-development section to obtain a visible image In the developing device, the heating unit includes a plate heater, and a plurality of press rollers are disposed to face each other along one surface of the plate heater, and the heat is interposed between the press roller and the plate heater. A thermal development apparatus that performs thermal development by passing a development photosensitive material. It is preferable to divide the plate heater into 2 to 6 stages and lower the temperature about 1 to 10 ° C. at the tip.

  Such a method is also described in JP-A-54-30032, which can exclude moisture and organic solvents contained in the photothermographic material out of the system, and can be rapidly developed in the photothermographic material. It is also possible to suppress changes in the shape of the support of the photothermographic material due to heating of the photothermographic material.

It is a figure explaining 1st Embodiment of the container of the photosensitive heat development recording material which concerns on this invention. It is sectional drawing which shows other embodiment of the container of 1st Embodiment. 1 is an overall perspective view showing a cassette according to the present invention. 1 is a cross-sectional view of a photosensitive heat development recording material according to the present invention. FIG. 5 is a diagram conceptually illustrating the manufacturing process of the photosensitive heat-developable recording material of FIG. It is a figure which illustrates typically the process of performing a X-ray imaging on the container of a recording material. It is a perspective view which shows 2nd Embodiment of the container of the photosensitive heat development recording material which concerns on this invention. It is sectional drawing which shows the state which accommodated the photosensitive heat development recording material and the sensitizing material in the container shown in FIG. It is a figure which illustrates typically the process of a radiography and heat development using the container of the photosensitive heat development recording material shown in FIG. It is a figure which shows 4th Embodiment of the container of the photosensitive heat development recording material which concerns on this invention. FIG. 11 is a cross-sectional view taken along the line AA of the photosensitive heat-developable recording material container shown in FIG. 10. It is sectional drawing which shows other embodiment of the photosensitive heat development recording material which concerns on this invention. It is a figure which illustrates notionally the manufacturing process of the photosensitive heat development recording material shown in FIG.

Explanation of symbols

1, 2, 31, 51 (for photosensitive heat-developable recording material) container 2 container 5 sensitizing member 11 cassette 40, 60 photosensitive heat-developable recording material

Claims (8)

Photosensitive thermal development containing a photosensitive thermal development recording material provided with an image forming layer containing photosensitive silver halide, non-photosensitive organic silver salt, reducing agent, and binder on at least one surface of the support A container for recording material,
A housing portion for housing the photosensitive heat-developable recording material, and comprising a housing body having at least a surface made of a light-shielding material;
A photosensitive heat-developable recording material container, wherein the container is provided with a sensitizing member.   2. The photosensitive heat-developable recording material according to claim 1, wherein the sensitizing member is affixed to an inner surface of the accommodating portion facing the image forming layer of the photosensitive heat-developable recording material. body.   A pair of pocket portions is defined by the partition portion by the accommodating portion, the photosensitive heat-developable recording material is held in one of the pair of pocket portions, and the sensitizing member is held in the other, and the partition portion 2. The photosensitive heat-developable recording material container according to claim 1, wherein a window portion is formed in a portion corresponding to a portion where a latent image is formed.   2. The photosensitive heat-developable recording material container according to claim 1, wherein the light-shielding material blocks colored light having a wavelength of 500 nm or less.   X-ray imaging for holding a photosensitive heat-developable recording material container according to any one of claims 1 to 4 and irradiating the photosensitive heat-developable recording material with X-rays to form a latent image. A cassette that can be loaded into the device. A method for developing a photosensitive heat-developable recording material provided with an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of a support,
The photosensitive heat-developable recording material is housed in a container made of a light-shielding material at least on the surface, and after irradiating the container with an sensitizing member, X-ray irradiation is performed on the container. A developing method for a photosensitive heat-developable recording material, wherein a latent image is visualized by heat development in a state where the heat-developable recording material is accommodated. A support;
An image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of the support;
A sensitizing layer is formed on the surface of the image forming layer,
A photosensitive heat-developable recording material, wherein the surface of the sensitizing layer is covered with a light-shielding layer. A method for producing a photosensitive heat-developable material comprising an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of a support,
The image forming layer is formed on the supplied support, the sensitizing layer is laminated on the surface of the image forming layer, the light shielding layer is laminated on the surface of the sensitizing layer, and then the support is cut. A method for producing a photosensitive heat-developable recording material.

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