JPH06235986A - Dissolving device for photographic gelatinous material, storage container, and dissolving method - Google Patents

Abstract

(57) [Summary] (Modified) [Structure] (1) In a method of heating and melting a gelled material for photography using an upper and lower electrode plate type high frequency dielectric heating device, the upper electrode plate is made smaller than the bottom surface of the container A method for dissolving a gelled material for photography, characterized in that the electrode plate is moved up and down according to the internal volume of the container so that the distance between the plate and the liquid surface is kept constant. (2) A parallel-electrode-plate type photographic gelation product melting apparatus for applying a high-frequency electric field to a photographic gelation product stored in a container and heating it by utilizing the dielectric properties of the photographic gelation product, wherein the container has an upper surface. An apparatus for dissolving a gelled material for photography, characterized in that the parallel electrode plates are vertically arranged with the container sandwiched therebetween, and that the parallel electrode plates have a vertical movement mechanism for the upper electrode plate and / or the lower electrode plate. . [Effect] In the dissolution of a photographic gelation product by high frequency induction heating, the dissolution time of the photographic gelation product can be estimated and the dissolution time can be estimated uniformly and efficiently even with different contents and different volumes. Also provided are a storage container and a dissolution method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a melting apparatus, a container and a melting method for high-frequency dielectric heating of a photographic gelled product which exhibits sol-gel change depending on temperature.

[0002]

2. Description of the Related Art Conventionally, in the manufacturing process of a photographic light-sensitive material, a photographic emulsion, a matting agent, an emulsion such as a coupler and the like are often used with gelatin as a binder. Utilizing the sol-gel change property of gelatin, these are stored in gel form at low temperature after cooling once prepared.
Such a gel-like material is used by dissolving it as necessary such as coating. As a method of dissolving the gelled material for photography, for example, put the gelled material in the form of strips or small pieces into a tank equipped with a heating jacket, heat from the tank wall, and dissolve while stirring with a stirrer. It is common. However, in this method, the gelled material is elastic and has very flexible material characteristics, so that it is difficult to handle it as a large lump, and a large labor is required to make it into small pieces or small lumps. It is also necessary to take out and put it in the heating dissolution apparatus. Moreover, as the viscosity of the gelled product increases, not only the dissolution time will increase, but also the amount adhered to the storage container will increase, and it is necessary to manually scrape it off. It has to be done below and leads to danger and deterioration of working environment.

Therefore, various methods of dissolving the gelled product for photography without taking it out from the storage container have been proposed. These methods are described, for example, in Japanese Examined Patent Publications Nos. 44-9495 and 5
No. 1-1738 and No. 50-31447, an external heating method of melting by heat transfer from a heating medium, and
60-53866, Japanese Patent Application Laid-Open No. 4-145428, Japanese Patent Application No. 3-104338, which utilizes the dielectric properties of the material to be melted, and is roughly classified into a so-called internal heating method in which the material is melted by dielectric heating. However, there is a demand for an increase in dissolution rate due to the increase in production in recent years,
From the viewpoint of effective use of input energy, the latter internal heating method is more preferable.

On the other hand, as the container for storing the gelled product, a tapered circular container is preferable from the viewpoints of ease of molding, strength and discharge of the solution.

However, in the case of the parallel electrode plate type dielectric heating device, if there is a space between the object to be heated and the electrode plate, the strength of the electric field applied to the object to be heated is reduced due to the space, and the object to be heated is heated. The calorific value of the product becomes small.

Therefore, when such a tapered circular container is used for melting with a parallel electrode plate type dielectric heating device, in a device in which electrode plates are fixed above and below the container, the melting efficiency decreases due to the internal volume of the object to be heated and In the device with the electrode plate fixed, there is a problem that the container has a taper and the distance between the object to be heated and the electrode plate changes depending on the liquid depth, and the dissolution efficiency decreases.

Further, generally, in the case of an external heating method in which a heat source from the outside of the container is used for melting, there is a problem in that the central portion of the gel mass is difficult to melt. Although it is not as good as the method, it melts from the outside, and there is a problem that a temperature difference occurs between the outside and the inside of a large container, especially in a radio wave with a high frequency.

In order to improve the uniform solubility, for example, in Japanese Patent Application No. 2-267826, the dissolved liquid is sequentially stored in a metal bat which radio waves do not reach, and JP-A-57-169743.
JP-A No. 2003-242242 discloses a method of sequentially taking out the dissolved liquid, and a method of introducing cold air into the micro dielectric heating device to cool the periphery of the gel mass. However, in the method of sequentially receiving the dissolved liquid in the metal vat, a liquid receiving container or the like is required in addition to the gelled product storage container, and in the method of sequentially extracting, a complicated control pipe cleaning or the like is required. Further, the method of cooling the inside of the micro dielectric heating device has a problem that the melting time becomes long.

Further, even if the same apparatus and the same power are used, the dissolution time varies depending on the kind and amount of contents. In order to estimate the melting time due to high-frequency dielectric heating, the dielectric constant ε and the dielectric loss angle tan δ of the substance are generally measured, and the product of these (ε × tan δ: dielectric loss coefficient) is measured.
The dissolution time is estimated from the. [Reference: The Institute of Electrical Engineers of Japan, 104 (7), 553 (S 59)] Also, as a method for measuring the actual temperature and controlling the melting time, an infrared thermometer (surface temperature only) or a fluorescent fiber thermometer There is a method of using. However, the method of measuring the dielectric loss coefficient is suitable as a method of defining the melting time, but the measuring device is expensive and the measurement is not easy. An infrared thermometer can measure only the surface temperature of a substance, and if the dissolution time is defined only by the surface temperature, undissolved matter may remain. Also, the fluorescent fiber thermometer is extremely expensive,
The mechanical strength is weak. Therefore, a method for easily estimating and controlling the dissolution time is desired. As described above, the method by high-frequency dielectric heating in melting the photographic gelation material has excellent aspects but there are various problems to be improved.

[0010]

In contrast to the above problems, an object of the present invention is to estimate the dissolution time in the dissolution of a photographic gelation product by high frequency dielectric heating even if the contents have different contents. However, it is another object of the present invention to provide an apparatus for dissolving a gelled material for photography, a storage container and a dissolving method capable of uniformly and efficiently dissolving it.

[0011]

The above-mentioned problems of the present invention in melting a gelled substance by a high frequency dielectric heating method are as follows.
It is achieved by the following dissolution apparatus, storage container and dissolution method.

(1) In a method of heating and melting a gelled material for photography by using a high-frequency dielectric heating device of upper and lower electrode plates,
A method for dissolving a photographic gelation product, characterized in that the upper electrode plate is made smaller than the bottom surface of the container, and the electrode plate is moved up and down according to the internal volume of the container so that the distance between the electrode plate and the liquid surface is kept constant. .

(2) A parallel-electrode-plate type photographic gelled product melting apparatus for applying a high-frequency electric field to a photographic gelled product stored in a container and heating it by utilizing the dielectric properties of the photographic gelled product. The container has an opening on the upper surface, the parallel electrode plates are arranged above and below the container, and the shape of the upper electrode plate,
The size is similar to that of the bottom surface of the container, and a vertical movement mechanism for the upper electrode plate and / or the lower electrode plate is provided so that the upper electrode plate can advance and retreat from the opening of the container to the inside of the container. Characteristic dissolution device for photographic gelation products.

(3) In the apparatus for dissolving a photographic gelled product according to the item (2), when the diameter of the container bottom is d ₁ and the diameter of the opening is d ₂ , d ₁ <d ₂ <2d in tapered circular container having a ₁ the relationship, when the upper electrode plate to its diameter as D, is a circular electrode plate d _1/2 <D <d ₁ becomes size, the diameter of the container gelled surface d _When it is set to ₃ , the revolving motion of the upper electrode plate that causes the revolving motion of the radius r (where r = (d ₃ −D / 2)) on the center of the upper electrode plate on the horizontal plane about the vertical central axis of the container is performed. An apparatus for dissolving a gelled material for photography, characterized by having an apparatus.

(4) In the apparatus for dissolving a photographic gelation product according to item (2), when the diameter of the container bottom is d ₁ and the diameter of the opening is d ₂ , d ₁ <d ₂ <2d in tapered circular container having a ₁ the relationship, when the upper electrode plate to its diameter as D, is a circular electrode plate d _1/2 <D <d ₁ becomes size, the diameter of the container gelled surface d ₃ , the container is integrated with the lower electrode plate on a horizontal plane about the vertical central axis of the upper electrode plate container, and the radius r (where r = (d ₃ −D) / 2. A device for dissolving a gelled material for photography, which has a lower electrode plate revolution motion drive device for effecting the revolution motion of 2).

(5) In the apparatus for dissolving a photographic gelled product according to item (2), when the diameter of the container bottom is d ₁ and the diameter of the opening is d ₂ , d ₁ <d ₂ <2d in tapered circular container having a ₁ the relationship, when the upper electrode plate to its diameter as D, is a circular electrode plate d _1/2 <D <d ₁ becomes size, the diameter of the container gelled surface d ₃ , the radius r (where r = (d ₃ −D)) is centered on the vertical center axis of the upper electrode plate container and is centered on the lower electrode plate container.
/ 2) A device for dissolving a gelled material for photography, which has a container orbital motion driving device for performing the orbital motion of (2).

(6) A container for a photographic gelation product used in a parallel electrode plate type high frequency dielectric heating device, wherein columnar protrusions are provided from the container bottom toward the opening centering on the vertical central axis of the container. Characteristic storage container for photographic gelation products.

(7) A storage container for a photographic gelled product used in a parallel electrode plate type high frequency dielectric heating device, wherein a plurality of partition walls are provided from the bottom of the container toward the opening around the vertical center axis of the container. A storage container for photographic gelation products, which has a multi-chamber structure with a common bottom surface.

(8) In the container for photographic gelation product according to the item (7), photographic gelation products having a small dielectric loss coefficient are sequentially accommodated from the outer chamber to the inner chamber, and the parallel electrode plate type high frequency dielectric is used. A method for dissolving a photographic gelation product, which comprises simultaneously dissolving each photographic gelation product with a heating device.

(9) In the method of heating and melting the gelled product in the container by dielectric heating, the heating time is defined in accordance with the electric conductivity of the gelled product, which is a method for melting a gelled product for photography.

The present invention will be specifically described below.

FIG. 1 is a conceptual view of various melting devices used for melting a photographic gelation product by a parallel electrode plate type dielectric heating method. FIG. 3A shows the use of the tapered circular container used in the present invention, in which upper and lower parallel electrode plates E ₂ and E ₁ smaller than the container bottom are used.
The upper electrode plate E ₂ moves up and down, and the vertical center axis Cp of the container
(B) is a case where the upper electrode plate E ₃ larger than the bottom surface of the container is fixed upward. FIG. 3C shows a dissolution apparatus in which a rectangular container is used and an electrode plate is installed laterally.

In the case of FIG. 1 (c), as described above, it is preferable that the distance between the electrode plate and the side surface of the object to be heated is uniform and as short as possible from the viewpoint of dissolution efficiency, but it is relatively large, for example, 50 to 100 l. In the case of a rectangular container, it is very difficult to mold the container so that the thickness of the container is thin and the flatness and verticality of the wall surface are satisfied, and further there is a problem that a loss tends to occur when the solution is taken out.

In the case of FIG. 1 (b), the container is a circular container with a taper, but the electrode plate is fixed above,
When the internal capacity changes, especially when it decreases, the distance between the electrode plate and the contents increases, and the efficiency of heat generation decreases.

In the case of FIG. 1 (a), it is possible to keep the distance between the electrode plate and the gelled substance constant by using the tapered circular container in the melting apparatus according to the present invention, even if the gelled substance content changes. The electrode plate is made smaller than the bottom of the container so that the electrode plate moves up and down. Will be possible. Also, there are many contents,
If there is a large area difference between the top surface and the bottom surface of the container and the electrode plate cannot cover the entire top surface, the upper electrode plate is revolved around the vertical center axis of the container, or the upper and lower electrode plates are rotated about the vertical center axis. It is preferable that the side electrode plates are integrally moved to revolve around the center of the container, or revolve around the vertical center axis of the upper electrode plate toward the center of the container on the lower electrode plate.

FIG. 2 shows the dimensional relationship between the container containing the gelled product placed on the lower electrode plate E ₁ and the upper electrode plate E ₂ , and FIG. 2 (a) is a sectional view and FIG. (B) is a plan view. Reference numeral 1 denotes a tapered circular container, the diameter of the container bottom is d ₁ , and the diameter of the container opening is d ₂ . Further, the gelled material 2 is stored in the container 1, and the diameter of the free surface of the gelled material 2 is represented by d ₃ . Circular upper electrode plate E _{2 with} diameter D
Are opposed to the gelled material 2 in the container 1 with a distance L from the free surface S of the gelled material 2. The distance L is preferably as short as possible in view of the principle of dielectric heating, but depending on the type of gelled substance, there is a possibility of foaming or discharging during melting, so the optimum distance is determined in advance by experiments. Lower electrode plate E
₁ may be larger than the container opening, and may have a circular shape or a rectangular shape. In FIG. 2B, C _P represents the vertical center axis of the container, and C _U represents the vertical center axis of the upper electrode plate. The distance r between C _P and C _U is the radius of the revolution movement in the present invention. FIG. 3A shows the operation of the upper electrode plate E _{2 when} the center C _U of the upper electrode plate E ₂ revolves around the center C _P with a radius r. That is, the container and the lower electrode plate E ₁ are considered to be fixed at predetermined positions, and the upper electrode plate is revolved along the inner circumference of the container 1. The direction of revolution may be clockwise or counterclockwise. Although it is possible to rotate the upper electrode plate E ₂ instead of revolving, it is preferable to revolve because the mechanism for supplying power to the electrode plate becomes complicated. FIG. 3B shows the movement of the gelled material free surface in the container when the container center C _P revolves around the center of C _U with a radius r. To revolve the container thinking upper electrode plate E ₂ fixed along the outer periphery of the upper electrode plate E ₂ is to perform revolving motion to the lower electrode plate by integrating the lower electrode plate E ₁ and the container In some cases, the lower electrode plate may be fixed and only the container may revolve around the lower electrode plate.

FIG. 4A shows a revolving motion drive mechanism for the upper electrode plate E ₂ .

The upper electrode plate E ₂ is fixed to the other end of the support rod 5 whose one end is screwed to the connecting plate 6. Power supply lines are connected to the upper electrode plate E ₂ and the lower electrode plate 4, but they are not shown. The connecting plate 6 is provided with a long hole 7 for adjusting the revolution radius according to the sizes of the container 1 and the upper electrode plate E ₂ . The pins 9a and 9b fixed to the two arms 8a and 8b are loosely fitted to the connecting plate 6 to support the connecting plate 6. The shaft fixed to one arm 8a is 10a
Is rotatably mounted on a bearing 12a fixed to the substrate 11.

The shaft 10b fixed to the other arm 8b is
It is rotatably attached to a bearing 12b fixed to the substrate 11, and the substrate 11 penetrates and is connected to a motor 14 via a coupling 13. A vertical drive shaft 16 having a rack gear surface 15 is attached to the board 11 and
Engages with a pinion gear 18 attached to a motor shaft of a motor 17 with a brake for vertical movement. Figure 4
4B is a view seen from arrows A and A in FIG. 4A. Since the two arms 8a and 8b and the connecting plate 6 form a four-node link, the upper electrode plate 3 should change its direction. Revolution is possible without.

Although not shown, the device shown in FIG. 4 (a) is surrounded by a metal casing so that high-frequency radio waves do not leak outside, and a power supply device for generating a high-frequency electric field is also provided. It is electrically connected to a control that controls the rotational drive of the motor.

Next, the operation will be described. In order to move the tapered circular container 1 into and out of the aforementioned housing, the motor 17 with a brake operates to move the vertical drive shaft 16 in the direction of arrow B ₁ until the lower surface of the upper electrode plate E ₂ comes out of the container 1. To move. When the vehicle reaches the specified standby position, the brake operates to maintain the standby position. Next, the tapered circular container 1 containing the gelled substance 2 is transferred by an appropriate transfer means, for example, a conveyor, and placed on the lower electrode plate E ₁ .

At this time, in order to maintain the relative positional relationship between the container 1 and the upper electrode plate E ₂ , it is preferable to use an appropriate positioning means. Further, since the content of the gelled substance 2 is not specified, the distance L between the upper electrode plate E ₃ and the free surface of the gelled substance 2 is L.
In order to set to the optimum value, it is necessary to know the height from the reference surface, for example, the lower electrode plate E ₁ to the free surface of the gelled material 2. As means therefor, there are methods such as converting the height by weight measurement, or providing a level sensor using ultrasonic waves in the housing. The value of the height from the reference plane obtained by these methods to the free surface of the gelled substance 2 is input to the above-mentioned control. Then, the upper electrode plate E ₂ is lowered until the height is obtained by adding the optimum value of the distance L that is input in advance according to the type of gelation product. First, the brake of the motor with brake 17 is released and the motor 17 operates to push down the vertical drive shaft 16 in the direction of arrow B ₂ . Since the predetermined standby position of the upper electrode plate E ₂ is a fixed position with respect to the lower electrode plate E ₁ , the position control is easy if a motor with a pulse generator is used as the motor 17 with a brake. When the upper electrode plate E ₂ is lowered to the position separated by the optimum distance L, the motor 14 for revolving the upper electrode plate E ₂ is operated to rotate the shaft 10b in the counterclockwise direction indicated by the arrow C, for example. Two arms 8 as described above
Since a and 8b and the connecting plate 6 form a four-bar link, the upper electrode plate E ₂ revolves counterclockwise without changing its orientation. After the upper electrode plate E ₂ starts to revolve, the energization from the high frequency power supply device is started and the heating and melting of the gelled material 2 is started. After heating for a predetermined time, the revolution of the upper electrode plate E ₂ is stopped, and the motor 17 with a brake operates again to lift the upper electrode plate E ₂ to a predetermined standby position. Then, the container 1 containing the solution is carried out of the housing and sent to the next step.

FIG. 5 shows another embodiment of the mechanism for driving the revolving motion of the upper electrode plate, but the vertical moving mechanism of the upper electrode plate E ₂ is omitted. Components having the same functions as those in FIG. 4A are assigned the same numbers. The upper electrode plate E ₂ is the connecting plate 2
Support shaft 1 rotatably supported by bearing 21a fixed to 2
It is fixed to 9a. The gear 20a is integrally fixed to the support shaft 19a by a key (not shown). The other end of the support shaft 19b is integrally fixed to the connecting plate 22. A gear 20b is integrally fixed to the support shaft 19b with a key (not shown) at one end of the support shaft 19b and meshes with the gear 20a. The other end of the support shaft 19b penetrates the connecting plate 22 and is fixed to the substrate 11 by a bearing 21.
It is rotatably attached to b and penetrates the substrate 11 and is connected to a motor 14 via a coupling 13. The support shaft 19b and the connecting plate 22 are integrally fixed by a key (not shown). Here, the gears 20a and 20b have the same number of teeth. By using such a planetary gear mechanism, the upper electrode plate E ₂ can revolve without changing its orientation. That is, if the motor 14 operates and the support shaft 19b rotates 90 ° in the counterclockwise direction, the connecting plate 22 and the gear 20b integrated with the support shaft 19b also rotate 90 ° in the counterclockwise direction. , Gear 20a meshing with gear 20b
Rotates 90 ° clockwise, the support shaft 19a and upper electrode plate E ₂ integrated with the gear 20a also rotate 90 ° clockwise.
As a result of the rotation, the upper electrode plate E ₂ revolves around the center of rotation of the gear 20b without changing its orientation.

In general, when the gelled product is dissolved, the dissolution of the central part of the container is delayed. As a countermeasure against this, in the present invention, columnar protrusions are provided from the container bottom toward the opening,
A method is used in which a plurality of partition walls are provided from the bottom of the container toward the opening, and the gelled material for photography having a small dielectric loss coefficient is sequentially stored from the outer chamber to the inner chamber.

FIG. 6 (a) is a perspective view of a container having a double columnar structure, and FIG. 6 (b) is a sectional view of the same. It is a container that can be dissolved in.

FIG. 7 shows a container having a multi-columnar structure, in which FIG. 7A is a perspective view and FIG. 7B is a sectional view. A container that is vertically partitioned from the wall surface of the device toward the center,
This is a container in which the dissolution time can be made uniform by accommodating a gelled substance having a dielectric loss coefficient smaller than that of the center side, that is, by making the gelled substance on the center side more easily melted by dielectric heating.

As the photographic gelation product, any one using a sol-gel changing hydrophilic binder such as gelatin can be used. For example, physically ripened emulsion (1.5 to 5.0), chemically ripened emulsion (1.5 to 7.
0), coupler dispersion (1.0 to 3.0), gelatin intermediate solution (0.5 to 3.0), and the like.

[Note that the numbers in parentheses are electrical conductivity (ms / cm)
Represents The measurement of the electric conductivity is inexpensive and easy, so the dissolution time can be easily estimated.

FIG. 8 is a graph showing the relationship between conductivity and dissolution time.

It can be seen from FIG. 8 that the electric conductivity and the dissolution time have a substantially linear relationship, and the dissolution time can be easily estimated from the electric conductivity.

The empirical formula obtained from this graph is represented by t = 7.86k + 5.17t: dissolution time k: electric conductivity.

The material of the dielectric container used in the present invention is preferably polypropylene (PP), polyethylene (PE), polytetrafluoroethylene (PTF).
E), tetrafluoroethylene-perfluoroalkylvinyl ether copolymer (PFA) and the like.

[0043]

EXAMPLES Hereinafter, the effects of the present invention will be specifically illustrated by examples.

Example 1 (Formulation of gelled product) 4% Gelatin for photography 50,000 ml 6% Dextran sulfate 970 ml (Viscosity: 101 cp 40 ° C., measured by B-type viscometer) Gelated product container Tapered type shown in FIG. 1 (a) Vessel (upper 460 mmφ, lower 390 mmφ, height 430 mmφ) High frequency dielectric heating device used: 13.56 MHz, 10 KW The dissolution time was measured by changing the liquid volume by the following method.

: Upper circular electrode plate 350 mmφ, with vertical mechanism [Fig. 1 (a) electrode plate does not revolve]: Upper circular electrode plate 390 mmφ, vertical, with circular motion [Fig. 3 (a)]: Upper rectangular electrode plate 550mmφ, fixed type [Fig. 1
(B)]: Square vertical container (550 mm x 350 mm, height 350 mm, container thickness 50 mm) Electrode plate vertical type [Fig. 1 (c)] The results are shown in Table 1.

[0046]

[Table 1]

From the results shown in Table 1, it can be seen that the apparatus of the present invention enables rapid dissolution regardless of the amount of liquid.

Example 2 The same gel product as in Example 1 was used. However, the conductivity of the gel was adjusted to be 4, 2.5 and 1.8 ms / cm by adding NaCl.

Each of the gelled products was placed in the following containers and tested.

Container with columnar protrusions (outer side 460 mm
φ, medium side 150 mmφ, height 430 mm, internal volume 45,000 ml) was introduced into the dielectric heating device and melted while the gelled substance was kept.
[Figure 6] Triple circular container (460mmφ, 280mmφ, 100m from the outermost part)
Divided into mφ.

The height is 430 mm, the internal volume is 50,000 ml), and the gelled substance is adjusted from the outside to have conductivity of 4, 2.5 and 1.8 ms / cm, respectively, and is introduced into the dielectric heating device with the gelled substance being put therein. And dissolved. [Figure 7] Circular container (460 mmφ, height 430 mm, internal volume 50,000 ml)
The gelled material was introduced into the dielectric heating device and dissolved therein.

The results are shown in Table 2.

[0053]

[Table 2]

From the results shown in Table 2, it can be seen that the apparatus of the present invention is more uniform and can be dissolved.

Example 3 A photographic additive NaC was added to a 4% photographic gelatin solution as follows.
l was added to prepare a gelling solution whose conductivity was changed.

(1) 0.90ms / cm (without addition of NaCl) (2) 2.25ms / cm (NaCl 0.74g / Gel 1l) (3) 5.45ms / cm (NaCl 2.66g / Gel 1l) (4) 7.03ms / cm (NaCl 3.66g / Gel 1l) Example: The relationship between the conductivity κ and the dissolution time t is t = 7.86 ×
It is required by experiment to be κ + 5.17. [Fig. 8]
Therefore, the gelled substance having the above-mentioned conductivity was dissolved in a high frequency dielectric heating device (50 liter circular container) for the time calculated by this formula.

Comparative Example: Heating was performed for 30 minutes regardless of gelation conductivity.

Comparative Example: Surface temperature was measured with an infrared thermometer, and heating was stopped when the surface temperature reached 45 ° C.

The results are shown in Table 3.

[0060]

[Table 3]

From the results shown in Table 3, it can be seen that, according to the present invention, the temperature rises to a predetermined temperature in the dissolution time estimated by calculation regardless of the type of gelation product. Depending on the type, it may become undissolved or overheated. Further, it can be seen that when the surface temperature is measured with an infrared surface thermometer and the dissolution time is specified, undissolved matter may remain inside.

[0062]

EFFECTS OF THE INVENTION According to the present invention, in the dissolution of a photographic gelation product by high-frequency dielectric heating, the dissolution time can be estimated and the dissolution can be carried out uniformly and efficiently even with different contents and different capacities. It was possible to provide an apparatus for dissolving a gelled product for use, a storage container, and a dissolution method.

[Brief description of drawings]

FIG. 1 Conceptual diagram of various melting devices

FIG. 2 is a perspective view of an electrode plate vertical revolution motion type device.

[Fig. 3] Explanatory diagram of various revolution movements

FIG. 4 is an explanatory cross-sectional view and a partial plan view of the upper and lower electrode plates and an orbital motion mechanism

FIG. 5 is an explanatory view of an orbiting motion mechanism of the upper electrode plate.

FIG. 6 is a perspective view and a sectional view of a container having columnar protrusions.

FIG. 7 is a perspective view and a sectional view of a multi-chamber container.

FIG. 8 is a graph showing the relationship between electric conductivity and dissolution time.

[Explanation of symbols]

1 heating vessel E ₁ lower electrode plate E _2, E ₃ the upper electrode plate E ₄ the side electrode plate 2 gelled S gelled free surface C _p container vertical central axis C _u upper plate of the vertical center axis 5 support rod 6 Connecting plate 7 Long hole 8 Arm 11 Board 12 Bearing 15 Rack gear surface 18 Pinion gear

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display H05B 6/02 8915-3K

Claims (9)

[Claims] 1. A method of heating and melting a gelled material for photography using a high-frequency dielectric heating device of upper and lower electrode plates, wherein the upper electrode plate is made smaller than the bottom surface of the container, and the distance between the electrode plate and the liquid surface is kept constant. In addition, a method for dissolving a gelled material for photography, characterized in that the electrode plate is moved up and down according to the internal volume of the container. 2. A parallel-electrode-plate type photographic gelation product melting apparatus for applying a high-frequency electric field to a photographic gelation product stored in a container and heating it by utilizing the dielectric properties of the photographic gelation product. Has an opening on the upper surface thereof, the parallel electrode plates are arranged one above the other with the container sandwiched therebetween, and the shape and size of the upper electrode plate are similar to those of the container bottom surface. An apparatus for dissolving a gelled material for photography, comprising an up-and-down moving mechanism for an upper electrode plate and / or a lower electrode plate so as to be able to move forward and backward through an opening. 3. The apparatus for dissolving a photographic gelled product according to claim 2, wherein d ₁ <d ₂ <2d ₁ when the container bottom diameter is d ₁ and the opening diameter is d _2. Is a circular container with a taper, and the upper electrode plate has a diameter D
When a circular electrode plate _{d 1/2 <D <d} 1 becomes size, when the diameter of the container gelled surface was d _3, the upper electrode plate in a horizontal plane about the vertical central axis of the vessel An apparatus for dissolving a gelled material for photography, comprising an upper electrode plate revolution motion drive device for performing an orbital motion having a radius r (where r = (d ₃ −D / 2)) at the center of. 4. The apparatus for dissolving a photographic gelled product according to claim 2, wherein d ₁ <d ₂ <2d ₁ when the diameter of the container bottom is d ₁ and the diameter of the opening is d _2. Is a circular container with a taper, and the upper electrode plate has a diameter D
When a circular electrode plate _{d 1/2 <D <d} 1 becomes size, when the diameter of the container gelled surface was d _3, on a horizontal plane about the vertical central axis of the upper electrode plate container The container and the lower electrode plate are integrated to form a radius r at the center of the container.
A device for dissolving a gelled material for photography, comprising a lower electrode plate revolution motion drive device for performing revolution motion of (where r = (d ₃ −D) / 2). 5. The apparatus for dissolving a photographic gelled product according to claim 2, wherein d ₁ <d ₂ <2d ₁ when the diameter of the container bottom is d ₁ and the diameter of the opening is d _2. Is a circular container with a taper, and the upper electrode plate has a diameter D
When a circular electrode plate _{d 1/2 <D <d} 1 becomes size, when the diameter of the container gelled surface was d _3, lower the electrode about the vertical central axis of the upper electrode plate container Radius r at the center of the container on the plate (where r = (d ₃ −D) / 2)
A device for dissolving a gelled material for photographic use, comprising a drive device for orbiting the container for orbiting it. 6. A container for storing a photographic gelled product used in a parallel electrode plate type high frequency dielectric heating device, wherein columnar protrusions are provided from the container bottom toward the opening centering on the vertical central axis of the container. Storage container for photographic gelation products. 7. A storage container for a photographic gelled product used in a parallel electrode plate type high frequency dielectric heating device, wherein a plurality of partition walls are provided from the bottom of the container toward the opening with a vertical central axis of the container as a center. A storage container for photographic gelation products, which has a multi-chamber structure with a common bottom surface. 8. A high-frequency dielectric heating device of parallel electrode plate type in which a photographic gelation product having a small dielectric loss coefficient is sequentially stored from the outer chamber to the inner chamber of the photographic gelation product storage container according to claim 7. The method for dissolving a photographic gelation product according to claim 1, wherein each photographic gelation product is dissolved at the same time. 9. A method of dissolving a gelled material for photography, characterized in that in a method of heating and melting a gelled material in a container by dielectric heating, a heating time is defined in accordance with the electric conductivity of the gelled material.