JP2003011086A - Cutting device and method for wide strip photosensitive material and control method of circumferential speed ratio of upper edge to lower edge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device and method suppressing the peeling of a photosensitive layer on a cutting surface in the whole range from a low feed speed range to a high feed speed range, when the wide-width strip photosensitive material is cut into narrow-width ones by a shear cutting method. SOLUTION: This cutting device is provided with multiple sets of rotating edges comprising sets of upper edges and lower edges rotating in the mutually inverse direction and cuts the running wide-width strip photosensitive material into multiple narrow-width belt-shaped photosensitive materials along the running direction. This cutting device for the wide-width strip photosensitive material is characterized in cutting the photosensitive material by changing the circumferential speed ratio of the rotating edges according to the feed speed of the wide- width strip photosensitive material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device, a cutting method and a control method for cutting a wide band photosensitive material into a narrow width.

[0002]

2. Description of the Related Art Conventionally, photosensitive materials such as 135 film, photographic paper, X-ray film, and photothermographic material have different physical properties such as triacetate cellulose (TAC), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN). On the wide and long support, undercoat coating solution,
The photosensitive layer coating liquid and the protective layer coating liquid are applied, dried and then cut into a predetermined width.

Conventionally, for these cutting, a so-called shear-cut type cutter is used, in which two upper and lower rotary blades are brought into contact with each other and cut by engaging with each other.

Conventionally, in cutting a photosensitive material, the upper and lower blades of a shear-cutting cutter rotate counterclockwise with respect to the feeding direction of the photosensitive material, and the lower blade rotates clockwise. The peripheral speed of the blade was cut slightly by making the peripheral speed of the lower blade slightly higher than that of the lower blade, and the peripheral speed of the lower blade to be the same as the feeding speed of the photosensitive material.

Since the photosensitive material is composed of a support and a photosensitive layer having different physical properties, and the photosensitive layer is adhered to the support via an undercoat layer, in cutting the photosensitive material by the shear cut method, If the cutting conditions are not good, chips, whiskers and peeling of the photosensitive layer will occur on the cutting surface,
There arises a problem of degrading the quality and reliability of the photosensitive material.

In cutting the photosensitive material by the shear cut method, various measures have been taken so far to solve these problems. For example, Japanese Patent Laid-Open No. 9-193085
When the peripheral speed of the upper blade is V1, the peripheral speed of the lower blade is V2, and the feeding speed of the photosensitive material is V3, V1 = (0.5 to
0.95) x V2, and V3 = (0.95-1.0)
A technique of cutting at a speed satisfying the condition of xV2 is disclosed.

In Japanese Patent Laid-Open No. 2000-108082, V1 is V1 when the feeding speed of the photosensitive material is V1 and the peripheral speed of the upper blade is V2.
When the condition of × 0.1 <V2 <V1 × 0.5 is satisfied and the cross section of the blade angle of the upper blade is 50 degrees or more and less than 90 degrees, V1 × 0 when the peripheral speed of the lower blade is V3. .1 <V2 = V3
A technique for cutting at a speed satisfying the condition of <V1 × 0.5 is disclosed.

However, these techniques are cutting methods for improving the cutting quality by changing the peripheral speeds of the upper blade and the lower blade within a certain range with respect to the material feeding speed. That is, if the feeding speed of the material is fast, the upper blade to match the feeding speed,
In this method, the peripheral speed of the lower blade is increased and the peripheral speed of the upper blade and the lower blade is decreased if the material feeding speed is slow.
However, this cutting method has a small difference between the peripheral speed and the feeding speed of the upper blade and the lower blade when the material feeding speed is low, and the upper blade and the lower blade when the material feeding speed is high. Since the difference between the peripheral speed of the blade and the feeding speed becomes large, the cutting quality varies from the start to the end of cutting, and the quality is not constant. Therefore, it cannot be said to be sufficient. In particular, peeling of the photosensitive layer is likely to occur during cutting when the feeding speed at the start of cutting is low.

In cutting, since there is always a region where the feeding speed at the start of cutting is low to a region where it is high, it is desired to develop a cutting device and method capable of performing stable cutting in all regions.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and an object thereof is to cut a wide belt-shaped photosensitive material into a narrow width by a shear cut method from a low feed speed area to a high speed feed area. It is an object of the present invention to provide a cutting device, a cutting method, and a control method that suppress the occurrence of peeling of a photosensitive layer on a cutting surface in the entire area.

[0011]

The above objects of the present invention have been achieved by the following constitutions.

1) Having a plurality of sets of rotary blades consisting of a set of upper blades and lower blades which rotate in mutually opposite directions, a wide belt-shaped photosensitive material that runs is formed into a plurality of narrow belt-shaped photosensitive materials along the running direction. In a cutting device for cutting, a wide band-shaped photosensitive material cutting device is characterized in that the peripheral speed ratio of the rotary blade is changed in accordance with the feeding speed of the wide band-shaped photosensitive material.

2) The difference between the blade angles of the upper blade and the lower blade is 0 to 15
The device for cutting a wide band photosensitive material as described in 1) above, wherein

3) The blade angles of the upper blade and the lower blade are 30 respectively.
The device for cutting a wide band photosensitive material according to 1) or 2), wherein the cutting device has a width of 90 °.

4) The feeding speed of the wide band photosensitive material is 30 m.
When it is less than / min, the peripheral speed ratio of the upper blade is 2.0 to 1.2, the peripheral speed ratio of the lower blade is 1.1 to 1.0, and the feeding speed of the wide belt-shaped photosensitive material is 30 to 500 m /. When the minute, the peripheral speed ratio of the upper blade is 1.2
˜1.0, and the peripheral speed ratio of the lower blade is controlled to 1.1 to 1.0, The wide band strip photosensitive material cutting device according to any one of 1) to 3).

5) Using a cutting device having a plurality of sets of rotary blades consisting of a set of upper blades and lower blades which rotate in mutually opposite directions, a wide belt-shaped photosensitive material which is running is run along the running direction.
In a cutting method for cutting into a plurality of narrow belt-shaped photosensitive materials, a wide belt-shaped photosensitive material which is cut by changing the peripheral speed ratio of the rotary blade in accordance with the feeding speed of the wide belt-shaped photosensitive material. Cutting method.

6) The difference between the blade angles of the upper blade and the lower blade is 0 to 15
The method for cutting a wide band photosensitive material as described in 5) above, wherein

7) The blade angles of the upper blade and the lower blade are each 30
The method for cutting a wide band photosensitive material according to 5) or 6), wherein the method is at 90 °.

8) The feeding speed of the wide band photosensitive material is 30 m.
When it is less than / min, the peripheral speed ratio of the upper blade is 2.0 to 1.2, the peripheral speed ratio of the lower blade is 1.1 to 1.0, and the feeding speed of the wide belt-shaped photosensitive material is 30 to 500 m /. When the minute, the peripheral speed ratio of the upper blade is 1.2
.About.1.0, and the peripheral speed ratio of the lower blade is controlled to 1.1 to 1.0. 5. The method for cutting a wide strip photosensitive material according to any one of 5) to 7).

9) The method for cutting a wide band-shaped photosensitive material according to any one of 5) to 8), wherein the photosensitive layer is cut on the lower blade side.

10) Having a plurality of sets of rotary blades consisting of an upper blade and a lower blade which rotate in mutually opposite directions, a wide belt-shaped photosensitive material which runs is formed into a plurality of narrow belt-shaped photosensitive materials along the running direction. A method of controlling the peripheral speed ratio of the upper blade and the lower blade of the cutting device for cutting, setting the peripheral speed ratio of the upper blade and the lower blade to the feeding speed of an arbitrary wide band-shaped photosensitive material, and setting each value. A method for controlling the peripheral speed ratio of the upper and lower blades, which is characterized by linear interpolation between spaces.

As a result of intensive studies to achieve the above object, the inventors of the present invention have found that a cutting surface of a wide band-shaped photosensitive material is cut when a wide band-shaped photosensitive material is cut into a narrow band-shaped photosensitive material by a rotary blade composed of upper and lower blades. The peeling of the photosensitive layer is caused by 1) the difference in the peripheral speed of the upper blade and the peripheral speed of the upper blade and the lower blade, especially 2) the difference in the peripheral speed of the upper blade and the lower blade, and 2) the difference in the cutting edge angle between the upper blade and the lower blade. It turned out that

That is, 1) if the difference between the feeding speed of the material and the peripheral speed of the upper blade is small, the amount of deformation until breakage becomes large and the photosensitive layer peels off, and 2) the blade edges of the upper blade and the lower blade. It was found that when the angle difference is large, the breaking point shifts to the side of the photosensitive layer and the photosensitive layer is peeled off.

On the other hand, in the region where the feeding speed of the wide belt-shaped photosensitive material is from low speed to high speed, the ratio of the peripheral speed of the upper blade and the lower blade to the feeding speed of the wide belt-shaped photosensitive material is calculated as each feeding speed. It was found that it is effective to control the occurrence of peeling of the photosensitive layer on the cutting surface at the time of cutting, and to control it and to make the breaking point of the wide band photosensitive material the central portion of the thickness of the cutting surface. The present invention has been made.

[0025]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described with reference to FIGS. Of course, this drawing shows an example of the present invention,
The present invention is not limited to this figure.

FIG. 1 is a schematic view showing an example of a cutting method using the cutting device of the present invention. In the figure, reference numeral 1 indicates a wide band photosensitive material, and 2 indicates an original winding roll of the wide band photosensitive material 1. Reference numeral 3 denotes an upper blade portion, 301 denotes an upper blade, and 302 denotes a rotary shaft to which the upper blade 301 is attached. Upper blade 301
The number of attached blades can be changed according to the width to be cut, and the attached upper blades 301 all have the same shape.
This figure shows the case of three sheets. 4 indicates a lower blade portion,
Reference numeral 401 denotes a rotating shaft that rotates the lower blade portion 4. The cutting method shown in this figure is a cutting method using a rotating upper blade 301 and a lower blade 402 (see FIG. 2), and is published by the Japan Packaging Machinery Manufacturers Association Packaging Machine and Mechanism (New Edition) 19
This is a so-called shear cut method as described on pages 430 to 431 of 1986.

Reference numeral 5 denotes a roll of the wide strip photosensitive material 1 which is cut and wound. Reference numeral 6 denotes a roll in which unnecessary portions at both ends of the wide belt-shaped photosensitive material 1 generated during cutting are wound up.

In the cutting shown in this figure, the coating surface of the wide belt-shaped photosensitive material 1 is cut with the lower blade side.

The upper blade portion and the lower blade portion are rotatably pivotally attached to a cutting device frame (not shown in the figure) via a bearing such as a ball bearing, and the upper blade portion and the lower blade portion are separately provided. It can be rotated by a motor not shown in the figure.

The tension applied to the wide band photosensitive material 1 is preferably 100 to 500 N / m width. If the width is less than 100 N / m, the wide belt-shaped photosensitive material 1 is undesirably loosened during transportation and easily comes into contact with the apparatus, which increases the risk of scratches. If the width exceeds 500 N / m, the contact pressure between the film surface of the wide belt-shaped photosensitive material 1 and the transport roll increases, and scratches are likely to occur, which is not preferable.

FIG. 2 is a schematic perspective view showing the relationship between the upper blade and the lower blade shown in FIG. However, in order to make it easier to understand the relationship between the upper blade and the lower blade, the wide band photosensitive material 1 is removed. Reference numeral 402 in the drawing denotes a blade portion (hereinafter referred to as a lower blade) attached to the attachment member 403 in a ring shape, and 40
Reference numeral 4 indicates a spacer member that determines the cutting width, and reference numeral 405 indicates an escape portion provided between the attachment member 403 and the spacer member 404 into which the upper blade 301 enters. Arrow is upper blade 3
01 and the rotation direction of the lower blade 402 are shown.

As for the peripheral speed ratio of the upper blade, when the feeding speed of the wide belt-shaped photosensitive material 1 is 0 to 30 m / min, the peripheral speed ratio of the upper blade is 2 with respect to the feeding speed of the wide belt-shaped photosensitive material 1. 0 to 1.2,
When the feeding speed of the wide belt-shaped photosensitive material 1 is 30 to 500 m / min, the peripheral speed ratio of the upper blade is 1.2 to 1.0 with respect to the feeding speed of the wide belt-shaped photosensitive material 1. It is controlled in accordance with the feeding speed of the wide belt-shaped photosensitive material 1.

As described above, the peripheral speed ratio of the upper blade is increased at the start of cutting when the feeding speed of the wide belt-shaped photosensitive material 1 is slow, and is decreased as the feeding speed is increased to prevent peeling of the photosensitive layer on the cutting surface. It is possible to

The peripheral speed ratio of the lower blade is controlled to be 1.1 to 1.0 with respect to the feeding speed of the wide band photosensitive material 1. That is, when the peripheral speed ratio of the lower blade is slower than the feeding speed, the wide belt-shaped photosensitive material 1 is bent during the conveyance, and is likely to come into contact with the apparatus, which increases the risk of scratching, which is not preferable. If it is faster than the range of the present invention, rubbing by the blade occurs, which is not preferable. The control method will be described with reference to FIG.

In the present invention, the peripheral speed ratio is a ratio represented by the following formula. Upper blade peripheral speed ratio = Upper blade peripheral speed / Wide band photosensitive material feeding speed, Lower blade peripheral speed ratio = Lower blade peripheral speed / Wide band photosensitive material feeding speed FIG. It is a schematic sectional drawing along -A '. In the figure, θ ₁ indicates the edge angle of the upper blade, which is preferably 30 to 90 degrees, and more preferably 75 to 90 degrees. If it is less than 30 degrees, the blade tip is likely to be broken and durability is reduced, which is not preferable.
If it exceeds 90 degrees, the sharpness is deteriorated, which is not preferable. θ
Reference numeral ₂ denotes the blade edge angle of the lower blade 402, preferably 70 to 90 degrees. If it is less than 70 degrees, the upper blade 301 may be unevenly worn, which is not preferable, and if it exceeds 90 degrees, the upper blade 30
The contact between No. 1 and the lower blade 402 becomes insufficient, and the upper blade 301 may come off the lower blade 402, which is not preferable.

The above-mentioned upper blade and lower blade are preferably used in combination so that the difference in blade angle between the upper blade and the lower blade is 0 to 15 °, and more preferably 0 to 5 °.

If the angle exceeds 15 °, shearing (cutting in) of the material to be cut progresses from the side of the sharp edged tool, and the breaking point may shift from the center.

Reference numeral 303 denotes a mining surface of the upper blade, 304 denotes an anti-mining surface of the upper blade, 406 denotes a mining surface of the lower blade, 4
07 shows an anti-mine surface. X represents the amount of overlap between the upper blade 301 and the lower blade 402, and is preferably 0.1 to 1.0 mm, more preferably 0.2 to 0.5 mm. If it is less than 0.1 mm, there is a risk that the upper blade will come off the escape portion 405 and ride on the lower blade, which is not preferable, and if it exceeds 1.0 mm, sharpness may be poor, which is not preferable. Y indicates the depth of the escape portion 405, which is 5.0 to 10 mm. Z indicates the width of the escape portion 405, which is 1.5 to 3.0 mm.

FIG. 4 is a schematic sectional view when the wide band-shaped photosensitive material 1 is cut by the rotating upper and lower blades. In FIG. 4A, the blade angle of the upper blade is 85 ° and the blade angle of the lower blade is 9 °.
When the upper and lower blades have a peripheral speed ratio of 1.1 and the lower blade has a peripheral speed ratio of 1.0, the upper and lower blades have a feeding speed of 10 m / min. It is a schematic sectional drawing which shows a state.
4 (b) uses the same upper and lower blades as in FIG. 4 (a), the feeding speed of the wide band photosensitive material 1 is 10 m / min, the peripheral speed ratio of the upper blade is 1.8, and the lower blade is It is a schematic sectional drawing which shows the state at the time of cutting when the peripheral speed ratio is 1.1. The spacer member is omitted in this figure.

In the figure, 101 indicates a support for the wide band photosensitive material 1, and 102 indicates a photosensitive layer. Other reference numerals have the same meaning as in FIG.

In the case of FIG. 4 (a), the wide strip photosensitive material 1 is used.
Since there is almost no difference between the feeding speed of the upper blade and the peripheral speed of the upper blade, shearing starts when the amount of compressive deformation of the wide belt-shaped photosensitive material 1 is large, and the photosensitive layer peels off from the support.

In the case of FIG. 4B, the wide strip photosensitive material 1 is used.
Since the peripheral speed of the upper blade is faster than the feeding speed of No. 1 and there is a difference, shearing begins in a state where the amount of compressive deformation of the wide belt-shaped photosensitive material 1 is small, so that peeling of the photosensitive layer from the support is suppressed to a minimum. It becomes possible.

FIG. 5 is a schematic view showing a method of controlling the peripheral speed ratio of the upper blade and the lower blade of the cutting device of the present invention.

In the figure, numeral 7 indicates a speed detecting means for detecting the feeding speed of the wide band photosensitive material 1, and M1 indicates a motor for rotating the upper blade portion 3. The upper blade portion 3 is the rotary shaft 302 of the upper blade.
The upper blade portion 3 is rotatable via the belt 3a.
M2 indicates a motor for rotating the lower blade portion 4, and the lower blade portion 4 allows the lower blade portion 4 to rotate on the rotation shaft 401 of the lower blade portion via the belt 4a. Reference numeral 8 indicates a power source for the motor M1, and 9 indicates a power source for the motor M2. Rotation of the upper blade portion 3 and the lower blade portion 4 is performed from each motor via a belt. 10
Is based on the information from the speed detecting means 7, the motors M1 and M2.
The control means for controlling the amount of electric power supplied to the power supplies 8 and 9 is shown. Other reference numerals have the same meaning as in FIG.

The method of controlling the peripheral speed ratio of the upper and lower blades will be described below. By inputting the information from the speed detecting means 7 arranged to detect the feeding speed of the wide belt-shaped photosensitive material 1 into the CPU of the control means 10, the feeding speed of the wide belt-shaped photosensitive material 1 is By comparing the peripheral speed ratio of the upper blade and the lower blade with a signal from a memory in which the peripheral speed ratio is stored in advance, and controlling the current values of the power sources 8 and 9 of the motors M1 and M2 separately via the CPU, the upper blade and the lower blade can be controlled. It is possible to control the peripheral speed of the blade. With this method, the peripheral speed ratios of the upper blade and the lower blade are set to the respective feeding ratios of the wide band-shaped photosensitive material 1 with respect to the entire region of the feeding speed of the wide band-shaped photosensitive material 1 at the start of cutting to the high speed in the steady state. It became possible to control according to the speed.

FIG. 6 is a graph showing the control of the peripheral speed ratio of the upper blade from the start of cutting to the steady state, which is carried out by the control method shown in FIG. In the figure, the vertical axis represents the peripheral speed ratio of the upper blade, and the horizontal axis represents the feeding speed of the wide belt-shaped photosensitive material 1. O is a peripheral speed ratio history curve showing the control state of the upper blade according to the peripheral speed ratio control method of the present invention, and P is a peripheral speed ratio history curve showing the control state of the conventional upper blade.

In the case of the conventional method, the peripheral speed ratio of the upper blade is constant with respect to the change in the feeding speed of the wide band photosensitive material 1, whereas in the case of the control method of the present invention, the wide band photosensitive material is used. It shows that the control method is to set the peripheral speed ratio of the upper blade in correspondence with each feeding speed of the material 1. By adopting this method,
In particular, when the feeding speed of the wide belt-shaped photosensitive material 1 at the start of cutting was low, by increasing the peripheral speed ratio of the upper blade, the trouble of peeling of the photosensitive layer on the cut surface at the start of cutting was eliminated.

In the control system of the present invention, the linear complementation system is used in which the peripheral speed ratio between the feeding speeds of the wide-width strip-shaped photosensitive materials 1 is controlled by a straight line. Although it is ideal to control the peripheral speed ratio between the feeding speeds of the wide band-shaped photosensitive materials 1 by curve complement, in this case, it takes time to calculate the function and it is difficult to change the setting frequently. Also, the CPU of the control means 10 must be a highly accurate one, which is costly. In the linear complementation method of the present invention, by narrowing the interval between the feeding speeds of the wide band photosensitive material 1, the same effect as in the case of the curve complement can be obtained, and the setting can be easily performed. Even simple things can be handled.

The wide band-shaped photosensitive material 1 cut by the cutting device of the present invention is not particularly limited, and examples thereof include a color film, a wide band-shaped photosensitive material for printing, a medical photosensitive material, a photosensitive material for heat development, and the like. It is effective for a photothermographic material in which adhesion between the body and the photosensitive layer is weak.

[0050]

The present invention will be described in detail below with reference to examples, but of course this example is merely an example, and the present invention is not limited thereto.

Example 1 << Preparation of Photothermographic Material Sample >> According to the method described below,
A photothermographic material was prepared.

(Preparation of Support) Corrosion of 8 W / m ² · min on both sides of a polyethylene terephthalate film having a thickness of 175 μm and colored in blue at a concentration of 0.160 (measured with a densitometer PDA-65 manufactured by Konica). A discharge treatment was applied. (Preparation of Photosensitive Emulsion) [Preparation of Photosensitive Silver Halide Emulsion] In 900 ml of water, 7.5 g of ossein gelatin having an average molecular weight of 100,000 and 10 mg of potassium bromide were dissolved to obtain a temperature of 35 ° C. and a pH of 3.0. And 370 ml of an aqueous solution containing 74 g of silver nitrate,
(98/2) molar ratio of potassium bromide and potassium iodide to equimolar to the above silver nitrate and 370 ml of an aqueous solution containing 1 × 10 ⁻⁴ mol of iridium chloride per mol of silver, pAg
While maintaining at 7.7, it was added by the controlled double jet method over 10 minutes. Then 4-hydroxy-6
-Methyl-1,3,3a, 7-tetrazaindene 0.3
g and adjusting the pH to 5 with NaOH, the average particle size is 0.05 μm, the coefficient of variation of the particle size is 12%, [1
[00] Cubic silver iodobromide grains having an area ratio of 87% were obtained. This emulsion was coagulated and precipitated using a gelatin coagulant, and after desalting, 0.1 g of phenoxyethanol was added to adjust the pH to 5.9.
The pAg was adjusted to 7.5 to obtain a photosensitive silver halide emulsion.

[Preparation of powdered organic silver salt] In 4720 ml of pure water, 111.4 g of behenic acid and 83.8 of arachidic acid were added.
g, and 54.9 g of stearic acid were dissolved at 80 ° C. Next, while stirring at high speed, 540.2 ml of a 1.5 mol / L sodium hydroxide aqueous solution was added, and 6.9 ml of concentrated nitric acid was added.
Was added and then cooled to 55 ° C. to obtain an organic acid sodium salt solution. While the temperature of the organic acid sodium salt solution was maintained at 55 ° C., the above photosensitive silver halide emulsion corresponding to 0.038 mol of silver and 450 ml of pure water were added and stirred for 5 minutes. Next, 760.6 ml of a 1 mol / L silver nitrate solution was added over 2 minutes, the mixture was stirred for 20 minutes, and then water-soluble salts were removed by filtration. After that, the electric conductivity of the filtrate is 2 μS
Washing with deionized water and filtration were repeated until it became / cm, and after centrifugal dehydration, it was dried under a heated nitrogen stream until there was no decrease in mass, and a powdered organic silver salt was obtained.

[Preparation of Photosensitive Emulsion Dispersion] Polyvinyl butyral powder (Butvar B manufactured by Monsanto)
-79) 14.57 g of methyl ethyl ketone (hereinafter, M
EK (abbreviated as EK) was dissolved in 1457 g, and 500 g of powdered organic silver salt was gradually added with thorough stirring with a dissolver type homogenizer and mixed sufficiently. After that Z of 1mm diameter
A photosensitive emulsion dispersion was prepared by dispersing with a media type disperser (manufactured by gettzmann) filled with 80% r beads (manufactured by Toray) at a peripheral speed of 13 m and a residence time in the mill of 0.5 minutes.

(Preparation of coating liquid) (Preparation of coating liquid) [Preparation of coating liquid Em-1 for upper layer of photosensitive layer] Using 500 g of the above-prepared photosensitive emulsion dispersion, 100 g of MEK was stirred under a nitrogen stream. After adding while maintaining the temperature at 24 ° C., sodium thiosulfate as a chemical sensitizer was added at 8 × 10 ⁻⁴ mol per mol of silver, and chemical ripening was performed for 30 minutes. After 30 minutes, 2.50 ml of a 10% methanol solution of bis (dimethylacetamide) dibromobromate was added and stirred for 1 hour, and 10% of calcium bromide was added.
After adding 4 ml of a methanol solution, the mixture was stirred for 15 minutes.
Next, the dye stabilizer-1 and potassium acetate are in a mass ratio of 1:
1.8 ml of a mixed solution of 5 (20% by mass methanol solution of dye stabilizer-1) was added and stirred for 15 minutes. Next, 7 ml of a mixed solution of infrared sensitizing dye-1 and dye stabilizer-2 (mixing mass ratio 1: 250, 0.1% by mass of MEK solution as a sensitizing dye) was added and stirred for 1 hour. The temperature is 13 ℃
The temperature was lowered to and stirred for 30 minutes. While keeping this at 13 ° C., 48 g of polyvinyl butyral was added and sufficiently dissolved, and then the following additives were added to prepare coating solution Em-1 for photosensitive layer upper layer. The above operations were all performed under a nitrogen stream.

[0056]   Desmodu N3300 (made by Mobay, aliphatic isocyanate)                                                           1.10g   Antifoggant (2- (tribromomethylsulfonyl) -pyridine)                                                           1.55g   1,1-bis (2-hydroxy-3,5-dimethylphenyl) -2-methyl     Propane 15g   Tetrachlorophthalic acid 0.5g   4-methylphthalic acid 0.5g   Dye-1 The amount at which the absorption maximum at the photosensitive layer becomes 0.9.

[0057]

[Chemical 1]

[Preparation of Coating Solution Em-2 for Lower Layer of Photosensitive Layer] In preparation of the coating solution Em-1 for upper layer of the photosensitive layer, except that 0.44 g of the maximum concentration improver-1 was newly added, A coating liquid Em-2 for the lower photosensitive layer was prepared.

[Preparation of coating liquid for surface protective layer] MEK 86
Cellulose acetate butyrate (manufactured by Eastman Chemical Co., CAB17
1-15), polymethylmethacrylic acid (Rohm & Haas, Paraloid A-21) 4.5 g, vinyl sulfone compound HD-1 (* 1) 1.5 g, benzotriazole 1.0 g, 1.0 g of F type activator (Surflon KH40 manufactured by Asahi Glass Co., Ltd.) was added and dissolved. Next, 30 g of the following matting agent dispersion liquid was added and 15 g of phthalazine was added with stirring to prepare a surface protective layer coating liquid.

(* 1) HD-1: 1,3- {bis (vinylsulfonyl)}-2-hydroxypropane <Preparation of Matting Agent Dispersion> Cellulose acetate butyrate (manufactured by Eastman Chemical Company, CAB
171-15) 7.5 g was dissolved in MEK 42.5 g,
Among them, calcium carbonate (Speciality M
manufactured by internals, Super-Pflex200)
Add 5 g and use a dissolver type homogenizer to
Dispersion was performed at 00 rpm for 30 minutes to prepare a matting agent dispersion.

[Preparation of Back Surface Coating Liquid] MEK 830 g
Cellulose acetate butyrate (E
ASTMAN CHEMICAL CO., CAB381-2
0) 84.2 g and 4.5 g of polyester resin (VitelPE2200B manufactured by Bostic) were added and dissolved. Dye-1 was added to the dissolved liquid so that the maximum absorption of the dye in the coating sample on the back surface was 0.35, and the fluorine-based activator (manufactured by Asahi Glass Co., Ltd.) dissolved in 43.2 g of methanol was added. Surflon KH40) 4.5
g and 2.3 g of a fluorine-based activator (Megafag F120K manufactured by Dainippon Ink and Chemicals, Inc.) were added, and the mixture was sufficiently stirred until it was dissolved. Finally, silica dispersed in MEK at a concentration of 1% by mass with a dissolver type homogenizer (W.
R. Grace, Syloid 64X6000) 75
It was prepared by adding g and stirring.

(Coating on Back Surface Side and Photosensitive Layer Surface Side of Sample) The back surface coating solution prepared as described above was used to obtain a dry film thickness of 3.5.
The extruded coater is applied so that the thickness becomes μm, and it is coated on the prepared support, and the drying temperature is 100 ° C. and the open air temperature is 10 ° C.
It was dried for 5 minutes using the drying air of.

After that, the photosensitive layer lower layer, the photosensitive layer upper layer and the surface protective layer are simultaneously extruded from the support side using the prepared photosensitive layer coating solutions and surface protective layer coating solutions, respectively, using an extrusion coater. A photothermographic material was prepared by coating. The coating was 0.5 g / m ² for the lower photosensitive layer, the coating silver amount was 0.6 g / m ² for the upper photosensitive layer, and the dry film thickness was 1.45 for the surface protective layer.
It went so that it might become a μm. Then, using a drying air having a drying temperature of 75 ° C. and a dew point temperature of 10 ° C., it was dried for 5 minutes to prepare a photothermographic material sample.

The prepared photothermographic material was cut by the shear cutter of the present invention under the cutting conditions shown in Table 1 to obtain Sample 1
01-118 were produced. Obtained Samples 101-118
The state of the cut surface was observed and the results are shown in Table 1.

For the observation of the state of the cut surface, 1 m was taken out from the position of 500 m from the start of cutting for each sample and observed with a magnifying glass with a scale of 15 times. Regarding the peeling of the photosensitive layer, when the length of the peeled film was 0.0 to less than 1.0 mm, it was marked with “◯”.

The blade angle of the upper blade used was 85 °, the blade angle of the lower blade was 90 °, the overlapping amount of the upper blade and the lower blade was 0.3 mm,
Width of relief of lower blade 2.0 mm, depth of relief of lower blade 8.
Using the 0 mm upper and lower blades, apply a tension of 2 to the photothermographic material.
The width was from 00 to 300 N / m, the number of cuts was 4, and the length of cut was 1500 m.

[0067]

[Table 1]

The effect of the present invention was confirmed. Example 2 Sample 20 was prepared by cutting the photothermographic material prepared in Example 1 with the shear cutter of the present invention under the cutting conditions shown in Table 2.
1-218 were produced. The states of the cut surfaces of the obtained samples 201 to 218 were observed, and the results are shown in Table 2.

The observation of the state of the cut surface was carried out by taking out 1 m of each sample from 500 m after the start of cutting and using a magnifying glass with a scale of 15 times. Regarding the peeling of the photosensitive layer, when the length of the peeled film was 0.0 to less than 1.0 mm, it was marked with “◯”.

The feeding speed of the photothermographic material for cutting is set to 1
20 m / min, the peripheral speed ratio of the upper blade is 1.1, the peripheral speed ratio of the lower blade is 1.0, the overlapping amount of the upper blade and the lower blade is 0.3 mm, and the clearance of the lower blade is 2. 0 mm, the depth of the relief part of the lower blade is 8.
0 mm, the tension of the photothermographic material is 200 to 300 N / m
Width, the number of cutting pieces is 4, and the cutting length is 15
It was set to 00m.

[0071]

[Table 2]

The effect of the present invention was confirmed.

[0073]

EFFECTS OF THE INVENTION When a wide band-shaped photosensitive material is cut into a narrow width by a shear cut method, the occurrence of peeling of the photosensitive layer on the cut surface is suppressed in all regions from a region where the feeding speed is low to a region where the feeding speed is high. It is possible to provide a cutting device and a cutting method,
Stable cutting was possible and the operating rate was improved, and at the same time, it was possible to shorten the time taken for inspection and reduce the number of inspection personnel.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a cutting method using a cutting device of the present invention.

FIG. 2 is a schematic perspective view showing the relationship between the upper blade and the lower blade shown in FIG.

FIG. 3 is a schematic cross-sectional view taken along the line AA ′ of FIG.

FIG. 4 is a schematic cross-sectional view when a photosensitive material is cut by a rotating upper blade and a lower blade.

FIG. 5 is a schematic view showing a method for controlling the peripheral speed ratio of the upper blade and the lower blade of the cutting device of the present invention.

6 is a graph showing control of the peripheral speed ratio of the upper blade from the start of cutting to a steady state, which is carried out by the control method shown in FIG.

[Explanation of symbols]

1 Wide-Band-Shaped Photosensitive Material 101 Support 102 Photosensitive Layer 3 Upper Blade 301 Upper Blade 302, 401 Rotating Shafts 303, 406 Mining Surface 304 Anti-Mine Surface 4 Lower Blade 402 Lower Blade 403 Mounting Member 404 Spacer Member 7 Speed Detecting Unit 8 , 9 power supply 10 control means θ ₁ , θ ₂ cutting edge angle X overlap amount M1, M2 motor

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2H023 BA07                 3C027 UU01 WW06 WW12 WW18

Claims (10)

[Claims] 1. A wide band-shaped photosensitive material having a plurality of rotating blades, which comprises a set of an upper blade and a lower blade which rotate in mutually opposite directions, is formed into a plurality of narrow band-shaped photosensitive materials along a traveling direction. In a cutting device for cutting, a wide band-shaped photosensitive material cutting device is characterized in that the peripheral speed ratio of the rotary blade is changed in accordance with the feeding speed of the wide band-shaped photosensitive material. 2. The difference between the tip angles of the upper blade and the lower blade is 0 to 15 °.
2. The apparatus for cutting wide-width strip-shaped photosensitive material according to claim 1. 3. The blade angles of the upper blade and the lower blade are each 30 to 30.
3. The wide band photosensitive material cutting device according to claim 1, wherein the wide band photosensitive material is 90 °. 4. The feeding speed of the wide band photosensitive material is 30 m /
When it is less than a minute, the peripheral speed ratio of the upper blade is 2.0 to 1.2, the peripheral speed ratio of the lower blade is 1.1 to 1.0, and the feeding speed of the wide belt-shaped photosensitive material is 30 to 500 m / min. When, the peripheral speed ratio of the upper blade is 1.2 ~
The wide band photosensitive material cutting device according to any one of claims 1 to 3, wherein the peripheral speed ratio of the lower blade is controlled to 1.0 to 1.1 to 1.0. 5. A wide band-shaped photosensitive material that is running is cut into a plurality of narrow widths along a running direction by using a cutting device having a plurality of rotary blades each including a set of an upper blade and a lower blade that rotate in opposite directions. In the cutting method of cutting into a band-shaped photosensitive material,
A method for cutting a wide band-shaped photosensitive material, which comprises cutting by changing the peripheral speed ratio of the rotary blade according to the feeding speed of the wide band-shaped photosensitive material. 6. The difference between the blade angles of the upper blade and the lower blade is 0 to 15 °.
The method for cutting a wide band photosensitive material according to claim 5, wherein 7. The blade angles of the upper blade and the lower blade are each 30 to 30.
The method for cutting a wide band photosensitive material according to claim 5 or 6, wherein the method is 90 °. 8. The feeding speed of the wide band photosensitive material is 30 m /
When it is less than a minute, the peripheral speed ratio of the upper blade is 2.0 to 1.2, the peripheral speed ratio of the lower blade is 1.1 to 1.0, and the feeding speed of the wide belt-shaped photosensitive material is 30 to 500 m / min. When, the peripheral speed ratio of the upper blade is 1.2 ~
8. The method for cutting a wide band-shaped photosensitive material according to claim 5, wherein the peripheral speed ratio of the lower blade is controlled to 1.0 to 1.1 to 1.0. 9. The method for cutting a wide band-shaped photosensitive material according to claim 5, wherein the photosensitive layer is cut on the lower blade side. 10. A plurality of sets of rotary blades comprising a set of an upper blade and a lower blade that rotate in opposite directions to each other, and a traveling wide-width strip-shaped photosensitive material is formed into a plurality of narrow-width strip-shaped photosensitive materials along a traveling direction. A method of controlling the peripheral speed ratio of the upper blade and the lower blade of the cutting device for cutting, setting the peripheral speed ratio of the upper blade and the lower blade to the feeding speed of an arbitrary wide band-shaped photosensitive material, and setting each value. A method for controlling the peripheral speed ratio of the upper and lower blades, which is characterized by linear interpolation between spaces.