JPH11258731A - Supporting body for photographic sensitive material, photographic sensitive material and its production and producing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect standardized goods to make the width wide and to enhance the productivity without extremely increasing a coating speed by welding butting parts with ultrasonic waves. SOLUTION: Supporting body webs P1 and P2 laminated with a resin melted by heating in an originally wound shape are set in drawing-out devices 11 and 12 and brought into contact with a heating roller 200 with a specified pressure in the state that the prescribed widths of the carried supporting bodies P1 and P2 are overlapped in the mutual side edge parts and then, the actions of the heating means incorporated in the roller 200 are imparted on the supporting bodies P1 and P2. Then, the side edge parts of the both supporting bodies are cooled by a cooling roller 201 immediately after the heating so that the bonding of the side edge parts is completed. Photographic sensitive material is applied by a coating device 400 and dried to a desired dry state in a drying part 60, thereafter, the resin thin film of the side edge parts of the supporting bodies being in the bonding state through a heating roller 70 is melt and the both supporting bodies are separated to be taken up to take-up devices 81 and 82.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for photographic light-sensitive material, a photographic light-sensitive material, and a method and apparatus for manufacturing the same, which are manufactured by using a novel method.

[0002]

2. Description of the Related Art As a method for increasing the productivity of a photographic light-sensitive material, it has been conventionally practiced to increase the transport speed (substantially equal to the coating speed) of a support for a photographic light-sensitive material.

[0003]

However, even if an attempt is made to increase the coating speed extremely compared with the conventional coating speed,
There is a limit because it is necessary to stably obtain a uniform coating film thickness.

As another method, it is conceivable to use a wide support for a photographic light-sensitive material.

For example, when the support is paper for photographic paper, it is a long object having a width of about 1200 mm to 1800 mm at present, but this width may be doubled or tripled.

[0006] The support is a standard product wholesaled from a material maker, and a manufacturer using the support must order it as a custom-ordered product when the above-mentioned wide width is required, and inevitably costs. Up is expected.

The same applies to the case where the support for a photographic material is a resin film.

An object of the present invention is to provide a support for a photographic light-sensitive material having a wide width by joining the standard products, and a method for manufacturing a photographic light-sensitive material capable of increasing productivity without extremely increasing the coating speed. To provide.

It is another object of the present invention to provide an apparatus for producing a photographic material capable of increasing the productivity, and a photographic material obtained by using the above-mentioned method or apparatus. .

[0010]

The object of the present invention has been achieved by the following constitutions.

(1) A support for a photographic light-sensitive material obtained by fusing the above-mentioned butted portion of a support for a long photographic light-sensitive material running with its side edges together by ultrasonic waves and winding it up.

(2) The support according to (1), wherein the support for photographic material is polyethylene terephthalate or polyethylene naphthalate.

(3) A photograph obtained by fusing the butted portion of a long photographic light-sensitive material support running side by side with ultrasonic waves, applying a photographic light-sensitive material, and drying. Photosensitive material.

(4) The photographic material according to (3), wherein the support for photographic material is polyethylene terephthalate, polyethylene naphthalate or triacetate cellulose.

(5) A photograph obtained by applying or drying a photographic light-sensitive material after welding or bonding the overlapping portion of the support for a photographic light-sensitive material running with the side edges overlapping with a solvent or the like. Photosensitive material.

(6) The photographic material according to (5), wherein the support for photographic material is triacetate cellulose, polyethylene terephthalate or polyethylene naphthalate.

(7) Two photographic light-sensitive material supports each having a surface layer that can be heated and melted are joined by heating and cooling while the side edges of the two photographic light-sensitive material supports are run one after another. Photosensitive material obtained by coating and drying.

(8) The photographic light-sensitive material as described in (7), wherein the support for the photographic light-sensitive material is paper whose front and back surfaces are laminated with a resin.

(9) The photographic material according to (7), wherein the support for the photographic material is a resin film.

(10) The photographic material according to (9), wherein the support for the photographic material is polyethylene terephthalate or polyethylene naphthalate.

(11) having a surface layer that can be melted by heating;
Superposing the side edges of two photographic light-sensitive material supports, heating the side edges by heating means to melt the surface layer in the area, and heating the side edges by the heating means Manufacturing the photographic light-sensitive material, wherein the two photographic light-sensitive material supports are joined through a step of cooling a part, and then a photographic light-sensitive material is applied on one surface and dried. Method.

(12) having a surface layer that can be heated and melted;
Superposing the side edges of two photographic light-sensitive material supports, heating the side edges by heating means to melt the surface layer in the area, and heating the side edges by the heating means After the two photographic photosensitive material supports are joined through a step of cooling the part, a photographic photosensitive material is applied, and the side edge area after the drying step is separated from the heating means. A method for producing a photographic light-sensitive material, wherein the bonding state is weakened by heating with a heating means, and the respective supports for the photographic light-sensitive material are separated.

(13) The method according to (11) or (12), wherein the step of overlapping the side edges and the step of melting the surface layer are performed almost simultaneously.

(14) The photographic light-sensitive material support is characterized in that the front and back surfaces are paper laminated with a resin.
The method for producing a photographic light-sensitive material according to 1) or (12).

(15) The method according to (11) or (12), wherein the support for the photographic material is a resin film.

(16) A first method having a surface layer which can be melted by heating, and a heating means for heating the side edges of two photographic light-sensitive material supports which are conveyed while being superposed on the side edges. A heating roller, a cooling roller provided to cool the side edge immediately after being heated and melted, an application device for applying a photographic photosensitive material, and drying the photographic photosensitive material support after application. A second heating roller having a heating device for heating the side edge of the photographic photosensitive material support sent out from the drying device, and a joining state weakened by the second heating roller. And a take-up device for separating and winding the photographic material.

(17) The apparatus for producing a photographic light-sensitive material according to (16), further comprising means for smoothing the overlapping portion of the photographic light-sensitive material after separation.

(18) The apparatus for producing a photographic material according to (17), wherein the smoothing means is a roller.

(19) a heating roller having a surface layer that can be melted by heating, and a heating roller having heating means for heating the side edges of the two photographic photosensitive material supports which are conveyed while being superposed on the side edges; A cooling roller provided to cool the side edge immediately after being heated and melted; a coating device for coating a photographic photosensitive material; and a drying device for drying the photographic photosensitive material support after the coating. An apparatus, a cutting means for cutting the side edge of the photographic light-sensitive material support sent from a drying apparatus, and a winding device for winding the photographic light-sensitive material separated by the cutting means. An apparatus for manufacturing a photographic light-sensitive material, comprising:

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of an embodiment will be described with reference to the drawings.

FIG. 1 is a schematic view of the entire apparatus for explaining the entire process.

In the drawing, reference numeral 10 denotes an unwinding unit, which unwinds two original windings 100 and 101 formed by winding a support (hereinafter simply referred to as a support or a support web) P1 and P2 for a photographic material. It is installed in devices 11 and 12. The support P is made of paper, and both surfaces thereof are coated (laminated) with a resin thin film such as a polyethylene resin which is melted by heating as a surface layer.

The positions of the two-sided windings 100 and 101 are related so that the side edges of the support webs P1 and P2 overlap by a predetermined width.

In the embodiment, the width of the overlapping portion is set in a range of about 0 mm to 15 mm. A more preferred range is from about 1 mm to 10 mm.

20 is a heating roller 200 (first heating means)
And a cooling roller 201 for joining the side edges of the two supports together.

The heating roller 200 has a heating means comprising a heating element inside the roller and at a position corresponding to the side edge of the support to be superimposed.

The surface temperature of the heating roller 200 is about 2
It is controlled to keep it at 00 ° C. A well-known technique can be adopted as the control method.

The heating roller 200 and the support web P
The contact time is in the range of about 0.05 seconds to 1.0 seconds.

The contact time between the cooling roller 201 and the support web P is set in the range of about 0.01 second to 0.5 second.

The cooling roller 201 has a jacket inside, and has a configuration in which cold water flows (see FIG. 3).

In FIG. 3 showing the structure of the cooling roller, 2
Reference numeral 05 denotes a circular jacket provided in an area inside the roller corresponding to a side edge portion (overlapping portion) of the support web P,
Cold water flows through cold water intake and discharge pipes.

Returning to FIG. 1, instead of the cooling roller, a method of blowing cold air can be adopted.

Reference numeral 30 denotes an accumulator section including a plurality of transport rollers 300, and R denotes a backup roller.

Reference numeral 40 denotes a coating unit for coating a photographic light-sensitive material, which comprises a curtain coating device 400. The curtain coating method is well known from U.S. Pat. No. 632,374 or U.S. Pat. No. 4,569,863, and will not be described in detail.

Reference numeral 50 denotes a setting unit, which has a function of applying a cool air to the layer immediately after the application and solidifying it in a gel state so as to prevent the flow of the application liquid applied in the application unit.
00 is arranged.

Reference numeral 60 denotes a drying unit for drying the coated support web, and a plurality of reversers 6 for changing the transport direction.
00 and a floater 601 so as to dry the support in a non-contact state.

Reference numeral 70 denotes a heating roller (second heating means) that heats the side edge of the support web P sent from the drying unit 60 and weakens the joining force between the two.

Reference numeral 80 denotes a winding unit. The winding devices 81 and 82 provided in the winding unit 80 have the same positional relationship as the relationship between the two feeding devices 11 and 12 in the feeding unit. .

Then, the winding device is driven by appropriately controlled driving means, and the support web before joining is formed.
In other words, it plays a role of winding the support webs P1 and P2, which have already become photographic light-sensitive materials, onto the cores provided in the respective devices.

As understood from the above description, the heating roller 70 and the winding device 8 for the heating roller 70
The difference between the angles 1, 82 constitutes a separating section.

[0052] 800 and 801 are the heating rollers 7
0 and a smoothing means disposed between the winding devices 81 and 82.

The smoothing means comprises a pair of metal rollers, each having a smooth surface, and the support web P to be separated.
1, has a function of correcting the deformation generated in the side edge portion of P2, that is, the overlapping portion, before winding.

The operation of the manufacturing apparatus having the above configuration is as follows.

The support rolls P1 and P2 in the form of original rolls, which are laminated (coated) with a resin that is melted by heating, are set in the feeding devices 11 and 12, and the respective leading ends are wound by the winding devices 81 and 82. After completing the preliminary preparations to be taken, the processing operation is started.

The support members P1 and P2 conveyed are brought into contact with the heating roller 200 with a predetermined width at the side edges thereof and with a predetermined pressure, and the heating means incorporated in the rollers is provided. The effect of is given.

That is, the resin film on the side edge portion is melted by the above-mentioned heating to form a joinable state. And
Cooling by the cooling roller 201 immediately after heating completes the joining of the side edges of the two supports.

By the continuation of the above operation, the two supports are sequentially integrated.

When the bonded support area reaches the coating section 40, a photographic light-sensitive material (silver halide emulsion) is coated thereon by a coating apparatus 400.
00 is applied to solidify the coating film into a gel.

In the drying section 60, a desired drying state is set, and the drying state is sequentially discharged from the drying device.

Thereafter, the resin thin film on the side edge of the support in the joined state is melted via the heating roller 70 to reduce the joining force, and then the winding device 81 is separated while separating the two supports. , 82 to obtain an original winding of the photographic light-sensitive material.

In the above arrangement, a pair of guide rollers may be provided between the heating roller 70 and the winding devices 81 and 82 in order to further stabilize the separation of the two supports.

FIG. 2 is a schematic diagram including a partial cross section showing the configuration of the heating roller.

For convenience of explanation, the heating roller 70 is taken as an example. In the figure, the heating roller comprises a hollow cylinder having a large diameter part shown as 700 and a small diameter part shown as 701. The small diameter portion 701 is provided with a small roller 702 having a heating means 704 such as a planar heating element inside.

The width of the small roller in the longitudinal direction of the entire roller is substantially the same as the width of the side edge of the support to be superimposed, and the outer dimensions are substantially the same as the outer dimensions of the large diameter section. . The small roller rotates coaxially with the large diameter portion.

Reference numeral 703 denotes a heat insulating member made of a heat-resistant resin, which is located between the outer shape of the small diameter portion and the heating means 704 and also provided between the small roller and the large diameter portion.

It should be noted that the small-diameter portion in the above-described configuration has thermal,
A resin having high electrical insulation is arranged, a cylindrical outer shape is made to have the same diameter as the large-diameter portion, and a small heating roller is arranged so as to be pressed against the resin (roller) portion. A heating roller may be used, and the configuration can be determined as appropriate.

[0067] Regardless of the presence or absence of lamination, bonding with an adhesive is possible even on a support made of paper.

The support for a photographic material in the embodiment was paper having a resin film, but instead of the support, a polyethylene terephthalate film (hereinafter, referred to as “paper”) was used.
Needless to say, it can be a PET film), a polyethylene naphthalate film (hereinafter, referred to as a PEN film), or a triacetate cellulose film (hereinafter, referred to as a TAC film).

The bonding in the case of a PET film can be performed by ultrasonic welding (adhesion) in addition to the above-described heating and cooling. In this case, the bonding is performed in a butt state without overlapping the side edges. it can. For the separation after the application of the photographic light-sensitive material, a slitter can be used.

Further, although the smoothing means is provided in the embodiment, the side edge may be cut by a slitter, and this portion may be independently wound on a winding device, so that the degree of freedom in design is wide.

Further, with respect to the application method, a slide hopper method can be applied if the overlapping side edges are avoided, and if the joining is performed by abutting the side edges,
The coating can be performed by various methods such as the slide hopper type or the extrusion type coating.

[0072]

EXAMPLE 1 Two 220 .mu.m-thick photographic photosensitive material supports made of paper provided with a polyethylene resin film (thin film) on both sides were overlapped at the side edges, and the side edges were joined by heating and cooling. Then, a coating of about 2000 m was applied under the following conditions, dried, separated and wound up to obtain a photographic light-sensitive material.

Composition of Each Coating Solution A coating solution containing 7% gelatin was adjusted to 50 cp with a thickener. Total flow rate 2, 3, 4 cc / sec / cm Base width of support: about 1700 mm Bonding width: about 5 mm Supporting speed of support: about 300 m / Min-500 m / min Coating method Curtain coating Curtain height 30-300 mm Coating layer 4-16 layers Coating width About 3350 mm As a result, a photographic light-sensitive material having a stable and uniform coating film was obtained. In addition, the loss as a photographic photosensitive material around the junction due to the joining and separation of the two supports,
Almost only the joint width, and there was almost no loss.

Example 2 Two photographic light-sensitive material supports each made of a polyethylene terephthalate film having a thickness of 180 μm were overlapped at the side edges, and the side edges were joined by heating and cooling. Under the same conditions, a coating of about 2000 m was applied, dried, separated and wound up to obtain a photographic light-sensitive material.

Base width of support: about 1250 mm Support transfer speed: about 100 m / min to 400 m / min Coating width: about 2450 mm As a result, a photographic material having almost the same results as in Example 1 was obtained.

Example 3 Two photographic light-sensitive material supports composed of a 120 μm-thick triacetate cellulose film were overlaid on the side edges, and the side edges were welded with a solvent. A coating of about 2000 m was applied under the conditions, dried, cut and separated by a slitter, and then wound up to obtain a photographic material. Base width of support: about 1200 mm Support speed of support: about 150 m / min Coating layer: 4 to 16 layers Coating width: about 2350 mm As a result, photographic photosensitive materials having almost the same results as in Examples 1 and 2 were obtained.

Example 4 A polyethylene naphthalate film having a thickness of 80 μm was used as a support for a photographic light-sensitive material, and the side edges of the film were abutted and run. About 1000 m under the same conditions as in Example 1
Was applied, dried, cut and separated by a slitter, and wound up to obtain a photographic light-sensitive material.

Supporting material transport speed: about 150 m / min Coating layer: 4 to 16 layers Ultrasonic output: about 450 W Frequency: about 28.5 KHz As a result, the formation of a wide support by ultrasonic fusion is less loss than expected, and the final In this case, a photographic light-sensitive material having a uniform coating was obtained.

[0079]

According to the present invention, two ready-made photographic light-sensitive material supports can be joined with a simple structure, and as a result, production can be performed without extremely increasing the coating speed (substantially the same as the support conveying speed). The performance was greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic view of the entire apparatus.

FIG. 2 is a schematic diagram illustrating a configuration of a heating roller.

FIG. 3 is a schematic diagram illustrating a configuration of a cooling roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Feeding part 11, 12 Feeding device 20 Joining part 30 Accumulator part 40 Coating part 50 Set part 60 Drying part 70 Heating roller (2nd heating means) 80 Winding parts 81, 82 Winding device 200 Heating roller (1st heating means) ) 201 Cooling roller 300 Conveying roller 400 Coating device 600 Reverser 601 Floater 700 Large diameter section 704 Heating means 800, 801 Smoothing means P1, P2 Photosensitive material support

Claims (19)

[Claims] 1. A support for a photographic light-sensitive material obtained by fusing the butted portion of a long support for a photographic light-sensitive material running with its side edges against each other by means of ultrasonic waves and winding it. 2. The support according to claim 1, wherein the support for the photosensitive material is polyethylene terephthalate or polyethylene naphthalate. 3. A photographic light-sensitive material obtained by fusing the butted portion of a long photographic light-sensitive material support running with its side edges against each other by ultrasonic wave, applying a photographic light-sensitive material, and drying. material. 4. The photographic material according to claim 3, wherein the support for the photographic material is polyethylene terephthalate, polyethylene naphthalate or triacetate cellulose. 5. A photographic light-sensitive material obtained by applying or drying a photographic light-sensitive material after welding or bonding the overlapping portion of a support for a photographic light-sensitive material that runs with its side edge portions overlapped with a solvent or the like. material. 6. The photographic material according to claim 5, wherein the support for the photographic material is triacetate cellulose, polyethylene terephthalate or polyethylene naphthalate. 7. A method in which two side supports of a photographic light-sensitive material having a surface layer which can be heated and melted are joined by heating and cooling while overlapping and running the side edges.
A photographic light-sensitive material obtained by applying a photographic light-sensitive material and drying it. 8. The photographic light-sensitive material according to claim 7, wherein the support for the photographic light-sensitive material is paper whose front and back surfaces are laminated with a resin. 9. The photographic light-sensitive material according to claim 7, wherein the support for the photographic light-sensitive material is a resin film. 10. The photographic material according to claim 9, wherein the support for the photographic material is polyethylene terephthalate or polyethylene naphthalate. 11. A step of superposing side edges of two photographic light-sensitive material supports having a surface layer which can be melted by heating, and heating the side edges by heating means to melt the surface layer in the area. After joining the two photographic light-sensitive material supports through a step and a step of cooling the side edge portion after heating by the heating means, a photographic light-sensitive material is applied on one surface. And drying the photographic material. 12. A step of superposing side edges of two photographic light-sensitive material supports having a surface layer which can be melted by heating, and heating the side edges by heating means to melt the surface layer in the area. After joining the two photographic light-sensitive material supports through a step and a step of cooling the side edge portion after heating by the heating means, a photographic light-sensitive material is applied, and after the drying step, A method for producing a photographic light-sensitive material, characterized in that the side edge area is heated by a heating means different from the heating means to weaken the bonding state and separate the photographic light-sensitive material supports. 13. The method according to claim 11, wherein the step of overlapping the side edges and the step of melting the surface layer are performed substantially simultaneously. 14. The photographic light-sensitive material support according to claim 11, wherein the front and back surfaces are paper laminated with a resin.
A method for producing the photographic light-sensitive material according to claim 12. 15. The method according to claim 11, wherein the support for a photographic material is a resin film. 16. It has a surface layer that can be heated and melted, and
A first means having a heating means for heating the side edges of two photographic light-sensitive material supports which are conveyed while being superposed on the side edges;
A heating roller, a cooling roller provided to cool the side edge immediately after being heated and melted, an application device for applying a photographic photosensitive material, and drying the photographic photosensitive material support after application. A second heating roller having a heating device for heating the side edge of the photographic light-sensitive material support sent out from the drying device; and a second heating roller to reduce the bonding state. And a take-up device for separating and winding the photographic photosensitive material obtained. 17. The apparatus according to claim 16, further comprising means for smoothing the overlapped portion of the photographic material after separation. 18. The apparatus according to claim 17, wherein the smoothing means is a roller. 19. It has a surface layer that can be heated and melted, and
A heating roller having heating means for heating the side edges of the two photographic light-sensitive material supports which are transported with the side edges superimposed, provided so as to cool the side edges immediately after being heated and melted; Cooling roller, a coating device for applying a photographic photosensitive material, a drying device for drying the photographic photosensitive material support after application, and a photographic photosensitive material support sent out from the drying device. An apparatus for manufacturing a photographic light-sensitive material, comprising: a cutting means for cutting the side edge portion; and a winding device for winding the photographic light-sensitive material separated by the cutting means.