JPH05289296A - Drying device for photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain a drying device where excessive drying, abnormal heating and jamming are prevented and whose maintainability is high by providing a direct power conductive type far infrared ceramic heater along the carrying surface of a photosensitive material and making air flow blow against the emulsion surface of the photosensitive material. CONSTITUTION:The photosensitive material 121 fed in the drying device 300 is carried by respective roller pairs 301-304. The plate-like direct power conductive type far infrared ceramic heater 311A is provided at an upper part between the respective roller pairs, its radiation surface is opposed to the emulsion surface of the material 121, and its rear surface is covered with a heat insulating material 311B. Upper carrying guides 305-307 and lower carrying guides 331-333 are respectively provided above and below the respective roller pairs 301-304. Fans 323A, 323B and 323C for blowing the air flow are provided further above the heater 311A, and the air flow is made to blow mainly against the emulsion surface of the photosensitive material 121 from air flow blowoff ports 321A, 321B and 321C through a duct 321, and further it is made to flow to the rear surface of the material 121.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a drying device used in an automatic developing machine using a photographic photosensitive material.

[0002]

2. Description of the Related Art In an automatic processor for photographic light-sensitive materials,
The time required for stable development and bleaching has been shortened, and rapid development technology has made remarkable progress. Similarly, for the drying process, a rapid technique has been studied, and a far-infrared drying device has been proposed for the current general hot-air drying technique. However, in the dryer, a far infrared lamp or a nichrome wire heating system is used as a heat source heater.For a device using a rod-shaped heater, a reflecting plate is provided to make it as uniform as possible with respect to the conveyed photosensitive material. Although heat radiation is performed and an air stream is blown onto the surface of the light-sensitive material to improve uniform drying and drying efficiency, the rapid drying technique using far infrared rays is not yet sufficient.

Regarding these, the following applications have already been issued.

JP-A-49-50932 JP-A-54-26734 JP-A-57-212443 JP-A 1-234849 JP-A 2-277055 JP-A 2-277056 JP-A No. 2-277057 JP-A No. 2-277058 JP-A No. 2-277059 JP In addition, the following is what is intended to increase the drying efficiency by changing the position and density of the infrared heat source in the dryer of the automatic developing machine. An application has been filed.

Japanese Unexamined Patent Publication No. 62-294242 Japanese Unexamined Patent Publication No. 1-118840 Japanese Unexamined Patent Publication No. 1-206345

[0006]

As described above, it is desired that the drying device used for the developing machine of the photographic light-sensitive material be as small as possible and consume uniform heat energy to obtain uniform drying with high thermal efficiency. The situation is not sufficient.

In particular, in a color photographic minilab installed at a retail store of a photographic material, it is an essential condition that the installation space be as small as possible and that it can be sufficiently operated with rated power for office. Moreover, such an automatic developing machine is naturally equipped with an exposure device in the previous process, and it is desired that the processes from printing exposure to development, fixing, and stable drying be processed by one machine, so the size of the device is reduced. There is a strong demand for a small space for installation and energy saving, and it is desired that uniform drying be performed stably and a high quality development finish be realized.

The present invention solves such a problem, and is quick and stable, is not affected by the outside temperature and humidity, and prevents overdrying, abnormal heating jam, etc. by the device of low cost material, and the loss of photosensitive material. It is an object of the present invention to provide a drying device having a small number and high maintainability.

[0009]

This object is achieved by any one of the following technical means 1 to 26.

(1) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a plate-like shape in which a surface opposite to a heat radiation surface of the light-sensitive material conveyed in the drying device is covered with a heat insulating material. A direct current type far-infrared ceramic heater is provided along the conveying surface of the photosensitive material to blow an air stream onto the emulsion surface of the nuclear photosensitive material.

(2) The drying device for the photographic light-sensitive material according to the first aspect, wherein the heat insulating material is in direct contact with and covered with the heater.

(3) A drying device for a photographic light-sensitive material as described in the item (1) or (2), wherein an air flow is blown to the outer surface of the heat insulating material and then to the emulsion surface of the light-sensitive material.

(4) In a dryer used in an automatic developing machine for photographic light-sensitive materials, the heat radiation surface of a direct current type far infrared ceramic heater is placed facing the emulsion surface of the light-sensitive material conveyed in the dryer. A drying device for a photographic light-sensitive material, characterized in that the air flow after passing through an air filter is blown into a gap between the emulsion surface and the heat radiation surface.

(5) The far infrared heater is 2.5-10 μm.
5. A drying device for a photographic light-sensitive material according to any one of items 1 to 4, which is a plate-shaped heater having a peak wavelength at m.

(6) In the items 3 and 1 to 5, the amount of air blown per 1 kW of the heater is 30 to 300 m ³ / hr,
An apparatus for drying a photographic light-sensitive material, which is of an air passage type.

(7) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a plate-shaped far-infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the drying device.
The surface of the heater that does not face the emulsion surface is covered with a heat-resistant member, and an air flow is blown to the emulsion surface of the light-sensitive material. A temperature detection sensor is provided in the vicinity of the heater or in the heater. And a sensor for controlling the temperature of the sensor to a preset temperature.

(8) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a plate-shaped far-infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the drying device.
Cover the surface of the heater that does not face the emulsion surface with a heat-resistant member,
An air flow is blown onto the emulsion surface of the light-sensitive material, a temperature detection sensor is provided at a member or position where far infrared rays are emitted from the heater and the air flow is blown, and the voltage and current flowing through the heater depending on the temperature detected by the sensor. And a sensor for controlling the temperature of the sensor to a preset temperature.

(9) In claim 7, an air flow blown onto the surface of the photosensitive material is of a passage type, an air temperature detecting sensor for detecting the temperature of the introduced air is provided, and the heater is detected by the temperature detected by the air temperature detecting sensor. A drying device for a photographic light-sensitive material, which is controlled so as to change a set temperature of a temperature detection sensor in the vicinity or in a heater.

(10) In a drying device used in an automatic developing machine for photographic light-sensitive materials, the light-sensitive material conveyed in the drying device is a cut paper of color paper, and a plate-like shape facing the emulsion surface of the cut paper. A far-infrared heater, the surface not facing the emulsion surface of the heater is covered with a heat-resistant member, and an air stream is blown to the emulsion surface of the light-sensitive material, and the opposite side of the heater is provided through the light-sensitive material conveying surface. A device for drying a photographic light-sensitive material, characterized in that a far-infrared ray detection sensor is provided on the side, and the voltage and current passed through the heater are changed by the detection signal from the detection sensor to control the heating of the heater.

(11) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a plate-shaped far-infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the drying device,
Cover the surface of the heater that does not face the emulsion surface with a heat-resistant member,
Further, an air flow is blown to the emulsion surface of the photosensitive material, and the heater ON / OFF and the air flow blowing fan ON / OFF are controlled by the detection signal of the photosensitive material conveyed to the automatic processor. A device for drying a photographic light-sensitive material, characterized in that it is arranged so as to shift.

(12) In a dryer used for an automatic developing machine for photographic light-sensitive materials, a plate-shaped far-infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the dryer.
Cover the surface of the heater that does not face the emulsion surface with a heat-resistant member,
Moreover, an air stream is blown to the emulsion surface of the light-sensitive material, and the heater is turned on by a detection signal of the light-sensitive material conveyed to the automatic developing machine, and after a certain period of time elapses, the heater is kept at a certain temperature. A drying device for photographic light-sensitive material, characterized in that the air flow blowing fan is turned on after reaching the temperature.

(13) In a dryer used for an automatic developing machine for photographic light-sensitive materials, a plate-shaped far infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the dryer.
Cover the surface of the heater that does not face the emulsion surface with a heat-resistant member,
At the same time, a stream of air is blown onto the emulsion surface of the photosensitive material, the detection signal of the photosensitive material conveyed to the automatic processor is turned off, and the heater is turned off after a lapse of a certain time.
After a lapse of a certain period of time or when it is detected that the heater has reached a certain temperature or less, the air flow blowing fan is turned on.
An apparatus for drying a photographic light-sensitive material, characterized in that it is set to FF.

(14) In a dryer used for an automatic developing machine for photographic light-sensitive materials, a plate-shaped far-infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the dryer,
Cover the surface of the heater that does not face the emulsion surface with a heat-resistant member,
Further, an air flow is blown to the emulsion surface of the photosensitive material, and the heater ON / OFF and the air flow blowing fan ON / OFF are controlled by the detection signal of the photosensitive material conveyed to the automatic processor. The photograph is characterized in that the heater and / or the fan are turned on / off according to the temperature detected by the temperature detection sensor provided at the position where the infrared rays are radiated and the wind is blown by the fan. Drying device for photosensitive materials.

(15) In a dryer used in an automatic developing machine for photographic light-sensitive materials, a plate-shaped far infrared heater is provided facing the emulsion surface of the light-sensitive material conveyed in the dryer.
Cover the surface of the heater that does not face the emulsion surface with a heat-resistant member,
Further, an air flow is blown onto the emulsion surface of the light-sensitive material, and the fan is turned on when the temperature detected by a temperature detection sensor provided at a position where infrared rays are radiated and the wind is blown by the fan exceeds a set temperature. Alternatively, the apparatus for drying a photographic light-sensitive material is characterized in that the fan is turned off or the air volume is decreased when the air volume is increased and becomes lower than a set temperature.

(16) In the fourteenth or fifteenth item, when the temperature detected by the temperature detection sensor provided at the position where the infrared rays are radiated and the air is blown by the fan exceeds a specific temperature, the heater is turned off. A device for drying a photographic light-sensitive material, characterized in that

(17) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a heat-resistant member covers a surface opposite to a heat radiation surface of the light-sensitive material which is conveyed by a pair of conveying rollers in the drying device. A far-infrared heater is provided along the conveying surface of the photosensitive material between the roller pair, and air is blown to the emulsion surface of the photosensitive material between the roller pair, and the roller surface on the emulsion surface side of the photosensitive material of the roller pair. The material is a plastic material with a static friction coefficient of 0.5 or less, or silicon rubber or fluororubber, and the position of the heater and the roller, the heater operation and the fan air volume are set so that the roller surface temperature is 60 to 180 ° C. Material drying equipment.

(18) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a plate-shaped far-infrared heater is provided facing the emulsion surface of the light-sensitive material conveyed in the drying device,
A surface of the heater that does not face the emulsion surface is covered with a heat-resistant member, and the heater and the photosensitive material are spread laterally downstream from the central axis of the transport surface with respect to the transport direction of the photosensitive material. A device for drying photographic light-sensitive material, characterized in that a bar-shaped guide is diagonally assembled in a figure-eight shape.

(19) In a dryer used for an automatic developing machine for photographic light-sensitive materials, the light-sensitive material conveyed in the dryer is a cut paper, and the emulsion surface of the light-sensitive material is placed on a horizontal conveyance surface of the light-sensitive material. A plate-like far-infrared heater whose back surface is covered with a heat-resistant member is provided in parallel above, and a gap is provided between the photosensitive material surface and a transport guide provided at the lower portion of the photosensitive material transport surface, and air is blown from above. A device for drying a photographic light-sensitive material, which is characterized in that it can be pulled out to the lower part.

(20) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a back surface is heat-resistant parallel to the light-sensitive material above the light-sensitive material which is horizontally conveyed with the emulsion surface in the conveying device. A plate-shaped far-infrared heater covered with a member was provided, and an air stream was blown to the photosensitive material so that the dividing surface could be divided into upper and lower parts in a state of being close to the photosensitive material conveying surface, and the upper part could be easily opened. A drying device for a photographic light-sensitive material, which is characterized in that

(21) In a dryer used for an automatic developing machine for photographic light-sensitive materials, a back surface is heat-resistant in parallel with the light-sensitive material above the light-sensitive material which is horizontally conveyed with the emulsion surface in the conveying device. A plate-shaped far-infrared heater covered with a member is provided, an air stream is blown to the photosensitive material, and a drying device can be divided into two parts in front and back with respect to the traveling direction of the photosensitive material, and the rear part can be easily divided and opened. A device for drying a photographic light-sensitive material, characterized by the above.

(22) In the drying device for a photographic light-sensitive material as described in the item 20 or 21, a part of the outer wall is made of a transparent member so that the photographic light-sensitive material to be conveyed can be seen from the outside. ..

(23) In a drying device used in an automatic developing machine for photographic light-sensitive materials, a plate-shaped far-infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the drying device.
The surface of the heater that does not face the emulsion surface is covered with a heat insulating material, and the air flow blown onto the surface of the photosensitive material is made to be a passage type, and the air volume blown to the upstream transfer portion of the photosensitive material in the first half is transferred to the downstream transfer portion of the latter half. A device for drying a photographic light-sensitive material, which is larger than that.

(24) In a drying device used in an automatic developing machine for a photographic light-sensitive material, the light-sensitive material is a color photographic light-sensitive material, and a heat radiation surface to the light-sensitive material is conveyed by a pair of conveying rollers in the drying device. A far-infrared heater whose surface on the opposite side is covered with a heat-resistant member is provided along the conveying surface of the photosensitive material between the roller pair, and air is blown to the emulsion surface of the photosensitive material between the roller pair to measure the roller surface temperature. Is operated and the air is blown within a range of 60 to 180 ° C., and air inside the drying device is blown onto the photosensitive material conveyed and discharged by a roller pair outside the drying device. Equipment for drying photographic light-sensitive materials.

(25) In paragraphs 1 to 24, an exhaust air flow from the drying device is provided separately from the air flow blown onto the photographic light-sensitive material being dried, and the exhaust flow rate is the flow rate blown onto the photographic light-sensitive material. 2 times or more of the drying apparatus for photographic light-sensitive materials.

(26) The apparatus for drying a photographic light-sensitive material as described in Item 25, wherein the exhaust heat air flow passes between the exterior plate of the drying apparatus and the inside of the drying apparatus.

[0036]

Embodiments and Functions An embodiment of an automatic developing machine (exposure and development processing apparatus) incorporating the drying device of the present invention will be first described in general with reference to the schematic side view of FIG.

An automatic developing machine (exposure and development processing apparatus) 1 incorporating an embodiment of a drying apparatus 300 of the present invention is a printer unit 100.
And a development processing unit 200 and a drying device 300.

In the printer section 100, the photographic light-sensitive material (hereinafter referred to simply as "sensitized material") 121 stored in the magazine 122 loaded in the printer section 100 is drawn out and sent to the exposure position 108. The negative 103 sent in is turned on by an exposure lamp 105 provided in a lamp box 104 and a shutter (not shown) is actuated to project a projection lens 105 and a mirror 107.
Imaging exposure is performed by. The image-exposed photosensitive material 102 is conveyed to the developing processing section 200 via a guide roller 112, a photosensitive material detection sensor 111 that detects passage of the photosensitive material, and a pair of feed rollers 109.

In the development processing section 200, a color developing tank 201, a bleach-fixing tank 202, and stabilizing tanks 203, 204 and 205 are sent to a drying device 300 by a pair of sending rollers 206 and 207.

The sensitive material 121 of the long roll sent out from the magazine 122 is cut into a predetermined length by a cutter (not shown) before reaching the exposure position 108, and thereafter, it is exposed as a cut paper, developed, dried and collected. It may be collected in the mouth 400, or, although not shown, it may be wound up after completion of exposure, development, and drying as a long roll, and then cut for each development-processed image.

The photosensitive material 121 thus sent to the drying device 300 is conveyed by each roller pair 301, 302, 303, 304. Above the space between the roller pairs 301, 302, 303, 304, a plate-shaped direct-conduction type far-infrared ceramic heater 311A has its radiation surface facing the emulsion surface of the light-sensitive material 121, and its back surface is insulated. Covered with material 311B.

Upper transport guides 305, 306, 307 and lower transport guides 331, 332, 333 are provided above and below each roller pair 301, 302, 303, 304, respectively, and the heater 311 is provided.
Above the A, air flow blowing fans 323A, 323B,
323C is provided, and the air flow outlet 321 is passed through the duct 321.
An air flow is blown mainly from A, 321B, and 321C to the emulsion surface of the light-sensitive material 121, and further to the back surface of the light-sensitive material 121.

Next, embodiments of each invention of the present application will be individually described with reference to the drawings of FIGS.

The embodiment of the first invention is a plate-shaped direct current far-infrared heater 311 facing the emulsion surface of the light-sensitive material 121.
A has a surface opposite to the facing surface of the photosensitive material 121 (hereinafter referred to as a back surface) and is covered with a heat insulating material 311B, so that the heat radiating surface is opposed to the photosensitive material conveying surface in parallel. It is the one. As described above, the conveyance surface is composed of four roller pairs 301, 302, 303, 304 horizontally arranged, the upper conveyance guides 305, 306, 307 and the lower conveyance guides 331, 332, 333, and the air flow upwards. Blowing fans 323A, 323B,
323C etc. are arranged. Conventionally, an infrared lamp or a nichrome wire heating method is used for a mirror-finished reflector.
However, there is a problem that the surface of the reflection plate becomes dirty over time and the intensity of far infrared rays irradiated to the photosensitive material changes. The first invention is a far-infrared ray that is stable over a long period of time because the opposite side of the heater is used as a heat insulating material, the far-infrared ray generated from the other side is cut, and the far-infrared ray emitted from only the surface facing the photosensitive material is used. Depends on the amount, it becomes stable dry. In addition, since the heater is a direct current type, the temperature rise of the heater itself by insulating the other side is not a problem in terms of performance, and it is efficient with respect to the amount of power consumed and it is a far infrared ray that is strong against the photosensitive material. To provide quick and stable power-saving type drying. The heat insulating material preferably used in the present invention is
For the purpose, it is a structure or material that cuts and does not reflect far infrared rays, and as the heat insulating material, if it has a low reflectance of far infrared rays, do not mirror-finish metal plate, heat resistant plastic, ceramic, etc. Members can be used. As the shape for covering the heater, there can be mentioned those shown in the sectional views (a), (b) and (c) of FIG. 18, and in particular, (b) and (c) from the viewpoint of energy saving.
Those shown in are preferred. It is preferable that the heat insulating material has a laminated structure, the outer side is made of a strong metal material, and the material on the heater side is made of a material having low heat conductivity.

As the substance having low heat conductivity, glass fiber, heat resistant fiber, alumina fiber, ceramic fiber, asbestos substitute, aluminum silicate type heat insulating material,
Silica fiber, aluminum borosilicate fiber, and a mixed foam of alumina, silica, phosphoric acid, and calcium oxide can be preferably used.

The use of a mirror-finished metal plate as shown in the sectional view of FIG. 18 (d) is outside the scope of claim 1 of the present application. The ratio of far infrared rays radiated to the photosensitive material
It is preferable to prevent it to 20% or less, more preferably 5
% Or less.

For example, as shown in FIG. 18 (e), the heater 31
It is also possible to make the distance between the heater and the side wall of the metal plate covering 1A extremely short so that the far infrared rays on the back surface do not irradiate the photosensitive material.

The embodiment of the second aspect of the invention is the same as the first aspect of the invention, except that the heat insulating material 311B is in direct contact with and covers the back surface of the plate-like far infrared heater, and has the shape shown in FIG. 18 (b). .. As an effect, not only the emission of far infrared rays from the back surface is prevented but also the emission as heat is prevented, and the electric energy is emitted as far infrared rays from the heater surface of the photosensitive material side, which leads to energy-saving drying. .. As the heat insulating material 311B used here, the above-mentioned substance having a low heat conductivity is used, and the insulating substance is a direct conduction type ceramic heater 31.
It is preferable to use 1A.

In the third embodiment of the invention, as shown in the side view of the drying apparatus in FIG. 3, the air flow outlets 325A, 32 of the duct 321 are shown.
5B and 325C are provided so that the air flow flows to the emulsion surface of the photosensitive material 121 after hitting the outer surface of the heat insulating material 311B. As a result, even if the outside of the heat insulating material is warmed, the heat is effectively used to dry the surface of the photosensitive material without waste. This achieves the purpose of energy-saving quick drying and downsizing of the drying device.

In the fourth embodiment of the invention, as shown in the side view of FIG. 4, as the plate-shaped far infrared heater 311A, a direct current type far infrared ceramic heater manufactured by Tokai High Thermal Industry Co., Ltd. is used. The back surface of the heater 311A is covered with the heat insulating material 311B as described above. Then, air filters 324A, 3 are provided so that a clean air flow is blown between the heat radiation surface of the heater 311A and the emulsion surface of the photosensitive material 121.
Airflow blowing fan 323A with 24B and 324C installed above
Air flow outlets 321A, 321B, 321 from 321B, 321C
C is provided.

As a result, dust adheres to the heater 311A and is burned, so that heat efficiency is not lowered and heat drying can be performed with high efficiency. In addition, energy saving, downsizing of the device, and stable and quick drying for a long time can be realized.

In the fifth embodiment of the invention, the plate-shaped far infrared heater 311A in the first to fourth embodiments has a thickness of 2.5 to 10 μm.
It is a drying device having a peak wavelength at.

By setting the peak wavelength in this range, it is advantageous for rapid drying, and particularly a very preferable effect is obtained for drying color paper.

In the sixth embodiment of the invention, the blowing air volume per 1 kW of heater in the first to fifth embodiments is 20 to 200.
Since the air flow of m ³ / hr is a circulating type instead of a circulating type, the rapid drying which is stable for a long period of time is further enhanced. In the air passage type, if the air flow rate is 20 m ³ / hr or less, the temperature becomes high and the photosensitive material is affected, and the air flow rate is 200 m ³ / hr.
Above, there is a drawback that the drying time becomes long.

Further, it has been found that the circulation method does not stabilize the drying, and particularly when the air passage type is used, stable drying can be performed for a long period of time without being affected by the vaporized gas component from the photosensitive material.

In the seventh embodiment of the invention, as shown in the side view of FIG. 5, the temperature of the heater 311A is directly measured and detected by a temperature detection sensor 341 provided near the heater 311A, and The voltage and current of the heater 311A are changed to control the sensor temperature to a set temperature.

Specifically, the temperature sensor for the heater temperature can be set in the vicinity of the heater shown in (a), (b) and (c) of FIG. 19 or in the heater. Here, (a) and (c) are side sectional views of the heater, and (b) is a front sectional view of the heater. The seventh invention is
The back surface of the plate-shaped far-infrared heater 311A is heat-resistant member 311.
The temperature and humidity of the outside air introduced air are changed by controlling the voltage and current flowing through the heater so that the temperature detection sensor 341 reaches the set temperature with a device which is covered with B and blows an air flow on the emulsion surface of the light-sensitive material. However, it has been found that a certain preferable dry state of the light-sensitive material is maintained. In particular, the position of the temperature detecting sensor with respect to the heater is preferably the back surface as shown in FIGS. 19 (a), (b) and (c), and when the photosensitive material is continuously processed, The surface temperature of the heater on the side becomes slightly higher than that of the back surface, which compensates for the lowering of the temperature of the transport roller due to the continuous processing, resulting in a very good dry state. Further, when the temperature detection sensor 341 is set on the front side of the heater represented by (a) and (b) of FIG. 19, stable drying can be achieved by changing the temperature control to a high temperature during continuous processing of the photosensitive material. can get.

In the seventh invention, as a method for controlling the sensor to a preset temperature, ON / OFF control of a current flowing through the heater is sufficient for the preset temperature.
It is also possible to take control to change the voltage applied to the heater by D proportional control or the like.

Although the effect of the seventh invention can be obtained even when the far infrared heater is a nichrome wire heating type which is not a direct current type heater, or when the heater surface is a heat-resistant member having a mirror finish, a direct current type far infrared heater is used. It is preferable to use it from the viewpoint of quick drying, and as the heat resistant member 311B, a member which is not mirror-finished is preferable from the viewpoint of long-term stability, and it is preferable to use a heat insulating material in close contact with it from the viewpoint of power saving. In the drawings, the heat-resistant member and the heat-insulating member have the same shape, and are therefore denoted by the same reference numeral 311B.

Although the set temperature varies depending on the device, it is preferably 200 to 450 ° C. from the viewpoint of rapid drying.

It is preferable to use a temperature sensor having an accuracy of ± 10 ° C. or less, more preferably ± 2 ° C. or less, and it is necessary to use a temperature sensor having high reproducibility and small fluctuation at high temperature for a long period of time. ..

It is most preferable that the claims 1 to 6 are satisfied.

In the eighth embodiment of the invention, as shown in the side view of the drying apparatus of FIG. 5, a temperature detecting sensor 341 is provided at a position where far infrared rays are emitted from a heater and an air flow is blown, and the detection by the sensor is performed. The electric current supplied to the heater is changed according to the temperature, and the sensor is controlled to the set temperature. The eighth aspect of the present invention is very effective as a control for raising the condition of the drying step to a condition under which the photosensitive material is well dried in a short time until the photosensitive material enters the automatic developing machine 1 and enters the drying device 300. As a result of various studies,
Drying is affected not only by the intensity of far-infrared rays, but also by various factors such as the temperature of the roller in contact with the photosensitive material and the temperature of the blowing air. The control according to the eighth aspect of the invention particularly shortens the start-up time and changes in the ambient temperature and humidity. It has been found to be effective against etc. Set temperature varies depending on various conditions, but is 80 to 200
The range of ° C is preferred. In addition, it is not basically necessary to control the heater temperature, but it is more preferable to perform control in parallel so that the temperature does not rise to 500 ° C. or higher for the life of the heater.

The heater control method includes ON / OFF control, PID proportional control and the like.

After the sensor reaches the set temperature, the seventh
It is preferable to shift to the control method of the invention. The control is preferably transferred at an early stage when the light-sensitive material enters the drying process.

The relationship among the type of heater, the heat-resistant member, and the scope of the above claims is the same as that described above in the seventh invention.

The ninth embodiment of the invention is shown in FIG.
Introduced air fan indicated by 3 (A, B, C), 324 (A, B,
In addition to the seventh embodiment, a temperature detection sensor is provided in the same portion as the air filter shown in C) and the heater temperature setting is changed according to the introduced air temperature. This effect is that when the blowing air is of a passing type, the device is small and low cost, but it prevents the point that drying failure occurs when the outside air temperature condition is abnormally high or low, and the device is small and low cost. The point is that a good dry state can be obtained even under outside air conditions. It is preferable to raise the heater temperature setting when the introduced air temperature is low, and lower the heater temperature setting when the introduced air temperature is high.

The tenth embodiment of the invention will be described with reference to the side view of the drying apparatus shown in FIG.

The sensitive material 121 in this case is a cut paper. The cut paper that easily causes jams is a drying device 300.
It is an effective invention that is taken to prevent overheating when a paper sheet is jammed and jammed. That is, the far-infrared ray detection sensor 351 is provided in the lower guides 331, 332, 333 of the light-sensitive material 121, and the light-sensitive material 121 that caused the jam stops, the jammed paper absorbs the far-infrared ray, and the sensor 351 causes the far-infrared ray to move. When the undetected state continues, heating of the heater 311A is stopped.

The eleventh embodiment of the invention will be described with reference to the schematic side view of the automatic processor (exposure and development processing apparatus) 1 shown in FIG.

The heat-resistant member 3 is attached to the back surface of the heater 311A.
The heater 311A is covered with 11B, and the heat radiation surface of the heater 311A is provided so as to face the emulsion surface of the conveyed photosensitive material 121.
Blowing fan 323A, 323 with 24A, 324B, 324C
The passing air flow from B, 323C passes through the duct 321 to the air flow outlets 321A, 321B, 321C, and each roller pair 301, 302, 3
It is designed to be sprayed onto the surface of the photosensitive material 121 conveyed by 03. The upper conveyance guides 305, 306, 307 and the lower conveyance guides 331, 33 are provided above and below the photosensitive material 121.
2,333 are provided.

The automatic developing machine (exposure and development processing apparatus)
The photosensitive material detection sensor 111 provided in the printer unit 100 immediately before the photosensitive material 121 is conveyed to the first developing processing unit 200
When 121 is detected, the ON / OFF signal is used to shift the ON / OFF timing of the heater 311A and the ON / OFF timing of the air flow blowing fans 323A, 323B, 323C.

As a result, the temperature of the heater 311A rises quickly, the preparation period is saved and quick drying is possible, and overheating after use is eliminated, and the thermal efficiency is further improved. In addition to the quick drying and energy saving drying device, Furthermore, since it is not overheated too much, it is possible to use a low-cost member that does not require special heat resistance as a component member.

In the twelfth embodiment of the invention, in the eleventh embodiment, after the heater 311A is turned on by the detection signal of the sensitive material detection sensor 111, a predetermined time has elapsed or the heater 311A is kept at a constant temperature. After detecting that it has reached by a detector (not shown), the airflow blowing fans 323A, 3
It is a drying device 300 in which 23B and 323C are turned on.

As a result, the temperature of the heater 311A can be quickly raised, and rapid drying can be performed. In addition, reliable drying can be performed, and energy saving and use of a low cost member for the drying device can be performed. In a thirteenth embodiment of the invention, in the eleventh embodiment, after a certain time has elapsed since the OFF signal of the sensitive material detection sensor 111 was detected (after the photosensitive material has passed through the drying step), the heater 311A is turned off, Further, after a lapse of a certain time or when it is detected that the heater 311A has reached a certain temperature or less, the air flow blowing fans 323A, 323B and 323C are turned off.

As a result, the overheating of the drying device after use is eliminated, and the low cost member can be used for the drying device, and when the next photosensitive material is sent from the automatic developing machine again without waiting for time. Drying is eliminated, and stable drying and prevention of overdrying can be achieved.

In addition to the eleventh embodiment, the fourteenth embodiment of the invention is, as shown in the side view of FIG. 5, far-infrared rays-irradiated, air-filtered blowing fans 323A, 323.
Each heater 311A and / or each blowing fan 323A, 323 is selected according to the temperature detected by the temperature detecting sensor 341 provided at the position where the air flow by B, 323C is blown.
B and 323C are turned ON / OFF.

For the control, the photosensitive material is fed into the entrance sensor 11
Turn on the heater at the time detected in 1 and turn on the temperature sensor 341.
When the temperature reaches the set temperature, the fan is turned on, the end of the processing of the photosensitive material is detected, the heater is turned off, and the fan is turned off when the temperature of the temperature sensor 341 drops to the set temperature. Is preferred.

Also, the effect can be obtained by the above-mentioned one control.

As a result, the effects of quick drying and energy saving are improved, and since the ambient temperature does not rise more than necessary, it is possible to construct a drying device having sufficient heat resistance by using low cost members.

In the fifteenth embodiment of the invention, as shown in the side view of FIG. 5, a temperature sensor 341 is provided at a position where an air flow is blown by fans 323A, 323B and 323C.
The fan 323A, 323B, 323C is controlled according to the temperature of the sensor 341, and the sensor 341 turns on the fan or increases the air volume when the sensor 341 exceeds the set temperature.
When the temperature is lower than the set temperature, the fan is turned off or the air volume is reduced.

Particularly preferably, the set temperature is set in several stages, the air volume is gradually increased from the fan ON when the temperature rises, and conversely when the temperature falls.

This is effective for stable drying and energy saving.

The sixteenth embodiment of the invention is the fourteenth or fifteenth embodiment, wherein the heater 311A is turned off when the temperature detected by the air temperature detection sensor 341 becomes a certain temperature or higher.
Control to F. As a result, the danger of abnormal heating of the drying device 300 due to fan failure or the like is prevented, and the safety function is enhanced. As a result, the loss of the photosensitive material 121 can be reduced.

Further, in this case, it is preferable to raise the set temperature, it is easy to think of a cooling failure due to a fan failure, maintenance is required, and an abnormality is notified by a display / alarm, etc., and the automatic processor or printer is activated. It is more preferred to incorporate controls that are not possible.

An embodiment of the seventeenth invention is the above drying device 300.
Of the rollers 301, 302, 303, 304 of No. 1 are in contact with the emulsion surface of the photosensitive material 121, and the surface material of the rollers is a plastic material having a static friction coefficient of 0.5 or less, or silicon rubber or fluororubber. So that the heater and roller position, the heater 311A and the blowing fan 323
The air volume of A, 323B, 323C is controlled.

As a result, quick drying can be realized while preventing the photosensitive material from winding around the roller, and the emulsion surface of the photosensitive material 121 can be smoothly conveyed without being damaged.
Further, the number of rollers is reduced by the quick drying, the apparatus becomes compact, and the cost and the size can be reduced. The temperature control range of the roller is preferably 80 to 160 ° C, more preferably 100 to 150 ° C.

A method for controlling the temperature range is possible according to the seventh and eighth inventions, and is preferable, but the roller temperature is detected by directly contacting the temperature sensor with the roller to control the heater and the fan. It can be achieved by

Incidentally, SBR, NBR, CR, CNR, EP
Rubber materials such as M and EPDM are not related to the conveyance jam of the photosensitive material, and are outside the seventeenth invention. However, by controlling the temperature of the roller so that it does not exceed 130 ° C, it is possible to obtain some degree of transport stability and quick drying.

The roller can also be achieved by using only the surface of the above material. A plastic material having a static friction coefficient of 0.5 or less is preferably used in this method, and the plastic material is particularly preferably a fluororesin or a silicone resin. .. As an example, a roller on the base surface side of the photosensitive material is a rubber material, and a roller on the emulsion surface side is a metal, and the surface thereof is covered with a thin film tube of PTFE, FEP, PEA.

In the eighteenth embodiment of the invention, as shown in FIGS. 1 to 6, the upper portion provided between the sensitive material conveying surface between each roller pair 301, 302, 303, 304 and the heater 311A. Transport guide 3
As shown in the plan view of FIG. 7, 05, 306, and 307 have an eight-shaped rod-shaped guide 306 in which the downstream side of the conveyance spreads laterally.
A, 306B, 306C.

More preferably, in addition to the above, the upper part is configured as a conveyance guide in a shape in which the upstream part expands upward, which is shown as a side view of FIG. 8 as an embodiment.

As a result, the sensitive material is made up of roller pairs 301, 302,
The sensitive material 121 is smoothly conveyed between 303 and 304 without being damaged or causing a jam. The other upper guides 305 and 307 are also the same as 306.

In the nineteenth embodiment of the invention, as shown in FIGS. 1 to 6, the conveyance surface of the photosensitive material 121 between the roller pairs 301, 302, 303, 304 on the side opposite to the heater 311A, that is, The surface of the lower conveyance guide 332 is formed in a mesh shape as shown in the plan view of FIG. 9 so that the lower conveyance guides 331, 332, 333 provided on the lower side have a space between the lower portion and the photosensitive material 121. As shown in the plan view of (a), many slit holes 332A are formed. The other lower guides 331 and 333 are also exactly the same as 332.

Further, the air blown from the upper part and escaped downward is exhausted to the outside of the apparatus from the upper part or the lower part of the recovery table 400. As a result, the sheet can be stably transported without troubles such as jams, and can be dried under the same heater and fan conditions when the photosensitive material is intermittently inserted and when it is continuously inserted, and stable drying can be obtained.

The lower guide is most preferably shaped like a slit in the direction of travel of the photosensitive material, as shown in the perspective view of FIG. 10 (b).

In the embodiment of the twentieth invention, as shown in the side view of FIG. 11, the drying device 300 can be divided into upper and lower parts in the vicinity of the conveying surface of the photosensitive material 121, and the upper frame 300A is opened by using the hinge 345 as a spindle. Air filters 324A, 324B, 324C on the frame 300A
The blowing fans 323A, 323B, 323C, the ducts 321, the air flow outlets 321A, 321B, 321C of the plate-shaped far infrared heater 311A and the heat resistant member or heat insulating material 311B for covering the back surface thereof and the roller pairs 301, 302, 303, 30
Four upper rollers 301B, 302B, 303B, 304B are incorporated.

By doing so, the cleaning and inspection of the inside of the drying device 300 and the treatment such as jam can be promptly and accurately performed.

In this embodiment, the upper frame 300A is opened on the rear side, but it may be opened on the front side or the side.

[0100] Further, although the upper surface of the roller pair is incorporated into the upper frame 300A as the sensitive material conveying surface for the division surface, the roller pair may be incorporated into the upper frame as a whole,
It may be left on the lower frame.

It is desirable that the upper transport guide and the lower transport guide on the transport surface can be independently opened or removed after the upper frame is opened.

In the embodiment of the 21st invention, it is possible to divide in the middle of the drying section, the one shown in the side view of FIG. 12 lifts the latter half, and the one shown in the side view of FIG. 13 slides the latter half. The effect is the same as the twentieth invention. This method is particularly advantageous for feeding cut color paper.

An embodiment of the 22nd invention is the upper frame 30.
The cover of part or all of 0A is covered with a transparent plastic cover to make it easier to see the inside.

As a result, the internal drying behavior can be observed well, and the handling of jams and the like can be directly and quickly carried out, which gives a great sense of security and greatly improves the handleability.

The transparent portion may be provided on a part of the lower frame instead of the upper frame 300A.

The twenty-third embodiment of the invention, as shown in FIG.
The duct from the blower fan 323C on the downstream side so that the amount of blown air from the blowout ports 321A, 321B, 321C through the ducts from the airflow blowing fans 323A, 323B, 323C is greatly increased to the upstream side and decreased to the downstream side. 321S is distinguished from the duct 321 from the blowing fans 323A and 323B on the upstream side, an adjustment flow port is provided at the boundary between both ducts 321S and 321, and the motor drive voltage of the blowing fan 323C is lowered to perform adjustment control. I decided to do it.

As a result, rapid drying can be performed more stably.

An embodiment of the twenty-fourth invention is as shown in FIG.
A collection stand 400 that conveys and discharges by a roller pair to the outside of the dryer.
Air in the drying device is blown to the photographic light-sensitive material collected by the fan 311A so that the surface temperature of the far-infrared heater section conveying roller pair 302, 303 is in the range of 60 to 180 ° C. The operating conditions of the fans 323A-C are set.

Thereby, further rapid drying of the light-sensitive material,
The effect is obtained for stable drying and improvement of curling property of the light-sensitive material after drying.

A method for controlling the roller surface temperature within the range of 60 to 180 ° C. is possible and preferable according to the seventh and eighth inventions, but the roller surface temperature is directly contacted with a temperature detection sensor, You can also control the heater and blowing fan.

In the twenty-fifth embodiment of the invention, a fan for exhaust heat air is provided as shown in the fan 350 of FIG. 15, the fan 349 of FIG. 16, and the fan 354 of FIG. 17, and the air volume of the fan is photographic material. It is more than twice the total air volume of the fans 323A-C blown to the. The air can be sucked in or supplied to the drying device from any portion such as the upper part of the developing tank tank, the drying device, the upper surface, the side surface and the lower surface.

The effect of the twenty-fifth aspect of the present invention is to obtain stable drying which achieves rapid drying while suppressing an increase in ambient temperature.

As a result of various studies, we have found that if the amount of air blown onto the photosensitive material is simply increased, the ambient temperature is lowered, but the drying property of the photosensitive material is lowered, which is not preferable, and an exhaust heat fan is provided for the purpose of lowering the ambient temperature. It has been found that it is preferable to set the air volume to twice or more of the air volume blown onto the photosensitive material in order to obtain a stable dry state.

Further, it is preferable that the exhaust heat fan is provided like the fan 350 in FIG. 15 and the air flow rate is applied to the photosensitive material discharged from the drying device, in order to obtain the effect of the twenty-fourth invention.

Although the exhaust heat fan can be provided separately from the outlet of the air flow blown and discharged to the photosensitive material from the drying device, as shown in FIG. When mixed and exhausted, the exhaust temperature of the air for blowing the light-sensitive material becomes high, and rapid drying can be safely carried out, which is particularly preferable.

The mounting position of the exhaust heat fan is not limited, and the exhaust heat fan may be mounted at any of the upper, lower, left and right positions, and it is also preferable from the viewpoint of safety that the exhaust heat fan is divided into two or more.

In the twenty-sixth embodiment of the present invention, as shown in FIG. 17, the outer casing 360 is provided at a distance to the internal parts of the drying device, and the guide plate 35 for restricting the flow of the air flow is provided.
1, 352, 353 are provided and exhausted by the exhaust heat fan 354. As a result, the air enters between the inside and the exterior of the drying device through the outside air intake port 361, passes through and cools the periphery, and the fan 354 discharges the air to the outside of the device.

This effect enables more efficient power-saving, efficient cooling of the outer package, and high-efficiency and quick drying by raising the roller surface temperature inside the drying device.

Further, in FIG. 17, the pre-heated air used for cooling the apparatus is used as the blowing air to the sensitive material so as to contribute to the quick drying. Air flow guide 351,352,35 to improve the flow of
3 are provided.

Further, the same effect can be obtained only by the method of providing the fan 361 for pushing the air in instead of the suction by the exhaust heat fan 354 as described above.

The system using the air intake fan 361 is as follows.
The feature is that the fan is not thermally loaded. Of course, as shown in FIG. 17, fans can be provided for both the air intake and the exhaust, and multiple fans can be installed. The fan installation position is not restricted either.

The conveying surface of the photosensitive material 121 in the drying device 300 of the present invention is not limited to a single row, but a plurality of rows can be provided. In this case, a plate-shaped far-infrared ceramic heater 311A, an air flow blowing fan, and each of the detection sensors may be provided for each row. The air flow blowing fan 323A, the far infrared ceramic heater 311A in the form of a plate, the air temperature detecting sensor 341, and the far infrared detecting sensor 351 can be made to operate, and the other series can be made not to operate.

Further, the sensitive material detection sensor 111 has a function of sensing the width of the sensitive material, and in accordance therewith, it is possible to judge how many series of the plurality of rows of drying devices should be operated. become.

[0124]

The effects of each invention of the present application have been described in detail with reference to the description of the embodiments. However, these effects are energy saving, quick drying, downsizing of the apparatus, long-term stability effect, and low cost. The automatic processing machine with a printer placed at the storefront of a photographic material retail store is also safe due to the effective effects of preventing the danger of abnormal heating of the photosensitive material due to It can be installed in a small space at low cost, avoids the danger of handling, and enables even small businesses to achieve high-quality color photofinishing tasks with high profitability and with peace of mind.

[Brief description of drawings]

FIG. 1 is a schematic side view of an embodiment of an exposure and development apparatus incorporating a drying apparatus of the present invention.

FIG. 2 is a side view of a second embodiment of the drying device according to the present invention.

FIG. 3 is a side view of third, seventh and eighth embodiments of the drying device of the present invention.

FIG. 4 is a side view of a fourth embodiment of the drying device of the present invention.

FIG. 5 is a side view of a drying device according to a ninth embodiment of the present invention.

FIG. 6 is a side view of a tenth embodiment of the drying device of the present invention.

FIG. 7 is a plan view of an upper conveyance guide.

FIG. 8 is a side sectional view of an upper conveyance guide.

FIG. 9 is a plan view of an embodiment of a lower conveyance guide.

FIG. 10A is a plan view of another embodiment of the lower conveyance guide. (B) is a perspective view of the another Example.

FIG. 11 is a side view showing a twentieth embodiment of the drying apparatus of the present invention.

FIG. 12 is a side view showing one embodiment of the twenty-first invention of the drying apparatus of the present invention.

FIG. 13 is a side view showing another embodiment thereof.

FIG. 14 is a side view showing a twenty-third embodiment of the drying device of the present invention.

FIG. 15 is a side view showing a twenty-fourth embodiment of the drying device of the present invention.

FIG. 16 is a side view showing a twenty-fifth embodiment of the drying device of the present invention.

FIG. 17 is a side view showing a twenty-sixth embodiment of the drying device of the present invention.

18 (a), (b), (c), (d), and (e) are side sectional views showing a heater and a heat insulating material structure, respectively.

19A and 19C are side sectional views showing the position of the temperature detection sensor with respect to the heater. (B) is the front sectional view.

[Explanation of symbols]

 1 Automatic processor (exposure and development processing device) 100 Printer section 111 Sensitive material detection sensor 121 Photosensitive material (photosensitive material) 200 Development section 201 Color development tank 202 Bleach fixing tank 203, 204, 205 Stabilization tank 206, 207 Send out Roller pair 300 Dryer 301, 302, 303, 304 Roller pair 305, 306, 307 Upper transport guide 311A Plate-shaped far infrared heater 311B Insulation material (heat resistant material) 321A, 321B, 321C Air flow outlet 321 Duct 321S Duct 323A, 323B, 323C Air flow blowing fan 324A, 324B, 324C Air filter 325A, 325B, 325C Air flow outlet 341 Air temperature detection sensor 345 Hinge 351 Far infrared detection sensor 400 Recovery port

Claims (26)

[Claims] 1. A drying device used in an automatic developing machine for a photographic light-sensitive material, wherein a plate-like surface of which a surface opposite to a heat radiation surface of the light-sensitive material conveyed in the drying device is covered with a heat insulating material. The apparatus for drying a photographic light-sensitive material, characterized in that the direct current type far-infrared ceramic heater of (1) is provided along the conveying surface of the light-sensitive material and an air stream is blown to the emulsion surface of the light-sensitive material. 2. The drying device for a photographic light-sensitive material according to claim 1, wherein the heat insulating material is in direct contact with and covered with the heater. 3. A drying device for a photographic light-sensitive material according to claim 1, wherein an air flow is blown to the outer surface of the heat insulating material and then to the emulsion surface of the light-sensitive material. 4. A dryer for use in an automatic processor for a photographic light-sensitive material, wherein a heat-radiating surface of a direct current type far-infrared ceramic heater is provided facing the emulsion surface of the light-sensitive material conveyed in the dryer. A device for drying a photographic light-sensitive material, characterized in that an air flow after passing through an air filter is blown into a gap between the emulsion surface and the heat radiation surface. 5. The apparatus for drying a photographic light-sensitive material according to claim 1, wherein the far infrared heater is a plate-shaped heater having a peak wavelength at 2.5 to 10 μm. 6. A drying device for a photographic light-sensitive material according to claim 1, wherein the amount of air blown per 1 kw of the heater is 20 to 200 m ³ / hr and the air passage type is used. 7. A dryer used in an automatic developing machine for a photographic light-sensitive material is provided with a plate-shaped far-infrared heater facing the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion surface of the heater. The surface not facing the heat-resistant member is covered with a heat-resistant member and an air flow is blown to the emulsion surface of the photosensitive material, and a temperature detection sensor is provided in the vicinity of the heater or in the heater to change the voltage and current flowing to the heater according to the temperature detected by the sensor, A drying device for a photographic light-sensitive material, characterized in that the sensor is controlled to a preset temperature. 8. A dryer used for an automatic developing machine for photographic light-sensitive materials is provided with a plate-shaped far-infrared heater facing the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion surface of the heater. A surface which is not opposed to is covered with a heat-resistant member, a stream of air is blown to the emulsion surface of the photosensitive material, and far infrared rays are emitted from the heater, and a temperature detection sensor is provided at a member or position where the stream of air is blown, and the sensor The photographic light-sensitive material drying apparatus is characterized in that the voltage and current flowing through the heater is changed according to the temperature detected by the sensor to control the sensor to a preset temperature. 9. The method according to claim 7, wherein the air flow blown onto the surface of the photosensitive material is of a passage type, and an air temperature detecting sensor for detecting the temperature of the introduced air is provided, and the temperature near the heater is detected by the temperature detected by the air temperature detecting sensor. A drying device for a photographic light-sensitive material, characterized by controlling so as to change a set temperature of a temperature detecting sensor in a heater. 10. A drying device used in an automatic developing machine for a photographic light-sensitive material, wherein the light-sensitive material conveyed in the drying device is a cut paper of color paper and has a plate-like shape facing the emulsion surface of the cut paper. A far-infrared heater is provided, a surface not facing the emulsion surface of the heater is covered with a heat-resistant member, and an air flow is blown to the emulsion surface of the photosensitive material, and the opposite side of the heater through the photosensitive material conveying surface. A far-infrared ray detection sensor is provided in the heater, and the heating and heating of the heater is controlled by changing the voltage and current flowing through the heater according to the detection signal from the detection sensor. 11. A dryer used for an automatic developing machine of a photographic light-sensitive material, wherein a plate-shaped far-infrared heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion surface of the heater. The surface not facing the photosensitive material is covered with a heat-resistant member, and an air flow is blown to the emulsion surface of the photosensitive material. The heater ON / OFF and the air flow are detected by the detection signal of the photosensitive material conveyed to the automatic processor. Blowing fan O
A drying device for a photographic light-sensitive material, characterized in that the N / OFF time is shifted. 12. A dryer for use in an automatic developing machine for photographic light-sensitive materials, wherein a plate-shaped far-infrared heater is provided facing the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion surface of the heater is provided. After covering the surface not facing with the heat-resistant member and blowing air on the emulsion surface of the photosensitive material and turning on the heater by the detection signal of the photosensitive material conveyed to the automatic processor, the heater is turned on for a certain period of time. A device for drying a photographic light-sensitive material, characterized in that the fan for blowing the air flow is turned on after a lapse of time or after the heater reaches a certain temperature. 13. A dryer for use in an automatic developing machine for photographic light-sensitive materials, wherein a plate-shaped far-infrared heater is provided facing the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion surface of the heater is provided. The surface of the heater is covered with a heat-resistant member, and an air stream is blown on the emulsion surface of the photosensitive material, and after a lapse of a certain time after the detection signal of the photosensitive material conveyed to the automatic processor is turned off, the heater is heated. Is turned off, and after a certain period of time has passed or when the heater has reached a certain temperature or lower, the fan for blowing the air flow is turned off.
An apparatus for drying a photographic light-sensitive material, characterized in that it is set to F. 14. A dryer used for an automatic developing machine for a photographic light-sensitive material, wherein a plate-shaped far-infrared heater is provided opposite to the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion surface of the heater is provided. The surface not facing the photosensitive material is covered with a heat-resistant member, and an air flow is blown to the emulsion surface of the photosensitive material. The heater ON / OFF and the air flow are detected by the detection signal of the photosensitive material conveyed to the automatic processor. Blowing fan O
The timing of N / OFF is shifted, and the heater and / or fan is turned on / off according to the temperature detected by the temperature detection sensor provided at the position where infrared rays are emitted and the wind is blown by the fan. A device for drying a photographic light-sensitive material. 15. A dryer used for an automatic developing machine for a photographic light-sensitive material is provided with a plate-shaped far-infrared heater facing the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion surface of the heater. The temperature detected by the temperature detection sensor, which is located at a position where the surface that does not face is covered with a heat-resistant member, and the emulsion surface of the light-sensitive material is blown with air, is blown by the fan by far infrared rays, is set. A drying device for a photographic light-sensitive material, wherein the fan is turned on or the air flow is increased when the temperature is higher than a temperature, and the fan is turned off or the air flow is decreased when the temperature is lower than a set temperature. 16. The heater according to claim 14, wherein the heater is turned off when the temperature detected by a temperature detection sensor provided at a position where infrared rays are radiated and a wind is blown by a fan is equal to or higher than a specific temperature. A device for drying a photographic light-sensitive material, characterized in that 17. A drying device used in an automatic developing machine for a photographic light-sensitive material, wherein a surface opposite to a heat radiation surface of the light-sensitive material transported by a transport roller pair in the drying device is covered with a heat-resistant member. An infrared heater is provided along the conveying surface of the light-sensitive material between the roller pair, and air is blown to the emulsion surface of the light-sensitive material between the roller pair, and the roller surface material on the emulsion surface side of the light-sensitive material of the roller pair. Is a plastic material having a static friction coefficient of 0.5 or less, silicone rubber, or fluororubber, and the heater and roller position, heater operation and fan air volume are set so that the roller surface temperature is 60 to 180 ° C. Drying equipment. 18. A dryer used in an automatic processor for a photographic light-sensitive material, wherein a plate-shaped far-infrared heater is provided facing the emulsion surface of the light-sensitive material conveyed in the dryer, and the emulsion of the heater is used. Cover the surface not facing the surface with a heat resistant material,
In addition, a rod-shaped guide is obliquely assembled in a figure-of-eight shape between the heater and the photosensitive material so as to spread laterally downstream from the central axis of the transport surface with respect to the transport direction of the photosensitive material. Characteristic photographic material drying device. 19. In a drying device used in an automatic developing machine for a photographic light-sensitive material, the light-sensitive material conveyed in the drying device is a cut paper, and is parallel to a horizontal conveyance surface of the light-sensitive material with an emulsion surface facing upward. A plate-shaped far-infrared heater whose back surface is covered with a heat-resistant member is provided above the air gap, and a gap is provided between the photosensitive material surface and a transport guide provided at the lower portion of the photosensitive material transport surface. A device for drying a photographic light-sensitive material, which is characterized in that it can be removed. 20. In a drying device used for an automatic developing machine for a photographic light-sensitive material, a heat-resistant member having a back surface parallel to the light-sensitive material above the light-sensitive material horizontally conveyed with the emulsion surface inside in the conveying device. Provided with a plate-shaped far-infrared heater covered with, the upper surface of the photosensitive material can be easily opened by blowing an air flow on the photosensitive material so that the dividing surface is close to the photosensitive material conveying surface. A device for drying a photographic light-sensitive material. 21. In a drying device used for an automatic developing machine for photographic light-sensitive materials, a heat-resistant member having a back surface parallel to the light-sensitive material is provided above the light-sensitive material horizontally conveyed with the emulsion surface inside in the conveying device. A plate-shaped far-infrared heater covered with is provided, and an air stream is blown to the photosensitive material, so that the drying device can be divided into two parts in the forward and backward directions with respect to the traveling direction of the photosensitive material, and the rear part can be easily divided and opened. An apparatus for drying a photographic light-sensitive material, characterized in that 22. The drying device for a photographic light-sensitive material as claimed in claim 20, wherein a part of an outer wall of the photographic light-sensitive material being conveyed is formed of a transparent member so that the photographic light-sensitive material can be seen from the outside. 23. In a drying device used for an automatic developing machine for a photographic light-sensitive material, a plate-like far infrared ray heater is provided so as to face the emulsion surface of the light-sensitive material conveyed in the drying device, and the emulsion surface of the heater. The surface that does not face is covered with a heat-resistant member, and the air flow blown onto the surface of the photosensitive material is of a passage type, and the amount of air blown to the upstream conveyance section of the photosensitive material in the first half is larger than that to the downstream conveyance section of the latter half. A drying device for a photographic light-sensitive material, which is characterized in that 24. A drying device used in an automatic developing machine for a photographic light-sensitive material, wherein the light-sensitive material is a color photographic light-sensitive material, and a heat radiation surface to the light-sensitive material is conveyed by a pair of conveying rollers in the drying device. A far-infrared heater whose opposite surface is covered with a heat-resistant member is provided along the conveyance surface of the photosensitive material between the pair of rollers, and air is blown to the emulsion surface of the photosensitive material between the pair of rollers to reduce the roller surface temperature. The heater is operated and the air is blown in the range of 60 to 180 ° C., and the air inside the dryer is blown onto the photosensitive material conveyed and discharged by a roller pair outside the dryer. Equipment for drying photographic materials. 25. The exhaust heat air flow from the drying device is provided separately from the air flow blown to the photographic light-sensitive material being dried, and the exhaust flow rate is the flow rate blown to the photographic light-sensitive material. A device for drying a photographic light-sensitive material, which is more than twice as much. 26. The exhaust heat air flow passes between a dryer exterior plate and the interior of the dryer.
A device for drying the photographic light-sensitive material described.