JPH09274300A - Thermal developing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the finish state of developing and to enhance finish quality when the type of a film is different as for a thermal developing device thermally developing the roll type or the cut type dry film on which a latent image is formed by a laser beam. SOLUTION: This device is provided with a heater drum 96 rotated while closely bringing the dry film into contact with the outside circumference surface thereof so as to thermally develop it, a heater 98 heating the drum 96 from the inside, a type discrimination means arranged in the introduction path of the dry film so as to discriminate the type of the dry film, a memory 210 storing a developing and heating condition every type of the dry film and a heating control part 208 obtaining the developing and heating condition with respect to the type of the film discriminated by the type discrimination means from the memory 210 and controlling the developing and heating condition. The thermal developing condition can be shown by the temperature of the heater drum or the feeding speed of the film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat developing apparatus used for developing a dry film on which a latent image is formed by a laser beam by heating.

[0002]

2. Description of the Related Art An apparatus for irradiating a dry film with a laser beam to record an image is known (for example, Japanese Examined Patent Publication No. 6).
0-10068). The dry film used in this apparatus is an opaque metal thin film vacuum-deposited on a transparent support such as a PET film.

By irradiating the film with a laser beam, the metal thin film is instantly evaporated to form fine light-transmissive dots, and an image is recorded by the dots. However, since this conventional dry film evaporates the metal thin film, it is necessary to increase the output of the laser beam, and there is a problem that a large laser light source (for example, an argon gas laser) is required.

Therefore, there has been proposed a dry film which can be recorded with a laser beam having a small output (for example, a helium neon laser or a semiconductor laser). This film forms a latent image on the film with a weak laser beam, and by heating the film, the latent image is visualized and developed. Such a system is referred to as a thermal development system here, and an apparatus used for this thermal development is referred to as a thermal development apparatus.

A microfilm recording apparatus (Computer Output Microfilmer) for producing a microfilm by this method
, Hereinafter, referred to as COM, COM system) is known. This COM reads print data from an external computer or an external device such as a magnetic tape, electronically combines it with predetermined form (form) data, and outputs it to a microfilm.

The form of the microfilm used here includes a long roll film and a sheet-like film cut to a certain size (hereinafter referred to as a cut film).
Conventionally, different developing devices have been prepared for each film form.

[0007]

Therefore, there is a problem in that the developing device used must be changed for each film type, and the operating rate of the device is poor and the processing efficiency is also poor. Therefore, it is conceivable that the heat developing device can process even if films having different forms are mixed. For example, a method has been considered in which an endless conveyor belt is brought into close contact with a heated heater drum, and a film is sandwiched between the heater drum and the conveyor belt and fed to heat the film.

However, if the form of the film to be heat-developed is different, the amount of heat absorbed by the film from the heater drum also changes. For example, since the cut film is fed with a proper interval, the roll film absorbs more heat than the cut film if the film width is the same.

When the width of the roll film is narrow, the amount of heat absorbed is smaller than that of the roll film having a wide width. Further, when the thickness of the film, especially the thickness of the transparent support (base film) changes, the amount of heat required for heat development changes due to this thickness, and the optimum heater drum temperature also changes.

Therefore, when the heat development process is continuously performed, the temperature of the heater drum changes depending on the form of the film, which causes a problem that the finished state of the heat development becomes unstable.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when heat-developing a dry film having a different film form, the finished state of development can be stabilized and the finished quality can be improved. An object is to provide a heat developing device.

Configuration of the Invention

According to the present invention, an object of the present invention is to provide a dry developing film in the form of a roll film or a cut film, on which a latent image is formed by a laser beam, with a heat developing device, by bringing the dry film into close contact with the outer peripheral surface. A heater drum that rotates while performing heat development, a heater that heats the heater drum from the inside, a form determining unit that is provided in the introduction path 2 of the dry film and determines the form of the dry film, and a form of the dry film And a heating control unit for controlling the developing and heating conditions by obtaining the developing and heating conditions for the film form determined by the form determining unit from the memory. Achieved by.

The heat development condition may be indicated by the temperature of the heater drum or by the film feed speed. It may be indicated by both the heater drum temperature and the film feed speed.
For example, when the heater drum temperature is low, the development finish can be made uniform by lowering the film feeding speed. When the temperature of the heater drum is included in the thermal development condition, the temperature of the heater drum can be detected by the temperature sensor and the amount of heat generated by the heater can be controlled so as to maintain the detected temperature appropriately.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a CO to which an embodiment of the present invention is applied.
2 is a functional block diagram of the M system, FIG. 3 is a front view of the heat developing apparatus, FIG. 4 is a front sectional view of the heating furnace, FIG. 5 is a central sectional view thereof, and FIG. 6 is control. It is a figure which shows a system.

In FIG. 1, reference numeral 10 is a system controller, and a magnetic tape device 12 as an example of an external device, a microfilm recording unit 14, and a system console 16 are connected to the system controller 10. . The system console 16 has a CRT display 18 and a printer 20.

The microfilm recording section 14 has, for example, 10
An image is recorded by using a laser beam on a dry film 30 which is a recording material in which a special emulsion is coated on a transparent support such as a PET film having a width of 5 mm. When the dry film 30 is irradiated with the laser beam, a latent image with fine dots is formed on the emulsion. This latent image is visualized by heat development and an image is recorded.

In FIG. 1, reference numeral 32 is a helium neon laser or a semiconductor laser, and the laser beam emitted from this laser is an ultrasonic (acousto-optic) optical modulator (AOM) 34,
The latent image of the image is recorded on the dry film 30 by being guided to the lower surface of the dry film 30 through the line scanner 36 and the page scanner 38. Needless to say, an appropriate reflecting mirror or optical lens is provided in the optical path of the laser beam.

The ultrasonic light modulator 34 time-sequentially modulates the laser beam by the time-series image signal output from the system controller 10, and turns on / off the laser beam in response to on / off of the pixel to be recorded. To do. The line scanner 36 deflects the laser beam one-dimensionally in the row direction of the image by a rotating polygon mirror (polygonal mirror). The page scanner 38 is composed of a mirror that vibrates with a galvanometer, and deflects the laser beam in a direction orthogonal to the deflection direction (scanning direction) of the line scanner 36.

The dry film 30 is supplied from a supply roll 40, a latent image of an image is recorded by a laser beam, cut into a predetermined size by a cutter 42, and discharged as a cut film 44. The cut film 44 is heat-developed into a well-known microfish.

Next, the system controller 10 will be described with reference to FIG. A magnetic tape (MT) is loaded in the magnetic tape device 12, and based on a command input from the system console 16, the data input control unit 60 of the system controller 10 records the recording information from the magnetic tape device 12 block by block. The system controller 10 is made to read it separately. The magnetic tape (MT) includes data including print data for a Kanji line printer (KLP), data designating a form to be used (form designating data), and character data indicating a character shape of an external character (external character pattern). Is recorded.

The data input control unit 60 takes out one row of data from the read block and forms one row of data. The read data for one line is made into data for a predetermined page, for example, one page based on the data of the line feed control code (LCC) in the synthesizing unit 62, and is further synthesized with the designated form to be combined with the frame memory 64. Memorized in.

Reference numeral 66 is a memory for storing data of various forms, and the data of the form designated by the form designation data is called and synthesized with the print data by the synthesis unit 62. At this point, the same contents as those to be output to the microfilm, the printer, etc. are created on the frame memory by the code information.

Based on the data for a predetermined page stored in the frame memory 64, the processing unique to the COM system is started. The COM editing unit 68 includes a COM frame editing unit 70 and a microfilm editing unit 72.

The COM frame editing section 70 performs processing for extracting data for creating a title or index from the page, and also performs shooting positioning on the cut film 44 by grid addition processing. Then, frame processing is performed to give the appearance of the form on the film. The microfilm editing unit 72 sequentially creates each frame, then creates a heading and an index, and ends the editing.

In the COM output control section 76, the data of the character form stored in the character data memory section 78 is used as the data of the predetermined number of pages thus COM-edited, while the images of the composite form are time-series signals. Is output to the microfilm recording unit 14. As a result, a latent image of a composite image of a predetermined number of forms is recorded on the cut film 44.

The cut film 44 is a heat developing device 80.
Is heat-developed. The heat developing device 80 can heat develop not only the cut film 44, but also a dry film in the form of a roll film 82 (see FIGS. 2 and 3) that is not cut to a certain size.

As shown in FIG. 3, the heat developing device 80 is
The cut film 44 discharged by the microfilm recording unit 14 is received from the introduction path 84, and a large number of transport rollers 86 are provided.
To convey horizontally. Introductory path 8 in this transport path
Immediately after 4, the roll film introducing passage 88 is joined from above.
Is provided.

In the roll film introduction path 88, a roll film 82 on which a latent image is previously formed by a laser beam from a magazine 90 located above the roll film introduction path 88 (see FIG. 2).
Is supplied. That is, an attachment / detachment mechanism for the magazine 90 is provided in the upper part of the housing of the heat developing device 80, and by mounting the magazine 90 here, the roll film 82 can be supplied to the introduction path 88.

The magazine 90 accommodates one film having the same width (105 mm) as the cut film 44. Instead of this magazine 90, one magazine containing a narrow roll film (for example, 16 mm) may be attached. Further, two roll film magazines of this width (16 mm) may be attached in parallel so that two roll films are supplied at the same time to perform simultaneous parallel processing.

A heating furnace 92 is arranged near the middle of the conveying path formed by the conveying rollers 86. This heating furnace 9
The second case 94 has a substantially octagonal box shape in a front view, and has an inner case 94A made of a thick aluminum plate and a heat insulating material 94B such as a cork material attached to an outer wall surface of the inner case 94A. The upper part of the case 94 can be opened and closed upward.

An aluminum heater drum 96 is rotatably held in the case 94 and is rotationally driven by a motor 97 shown in FIG. A rod-shaped halogen heater 9 is provided on the rotation center line of the heater drum 96.
8 are provided. The halogen heater 98 is fixed to the case 94. The halogen heater 98 heats the heater drum 96 from the inside, and the heater drum 9 is heated.
The surface temperature of the outer peripheral surface of 6 is maintained at a temperature suitable for heat development of the films 44 and 82.

In the case 94, a conveyor belt 100 which is in close contact with the outer peripheral surface of the heater drum 96 from below is accommodated. The conveyor belt 100 includes guide rollers 102 and 104 that sandwich the outer peripheral surface of the heater drum 96 from the left and right,
It is wound around a tension roller 106 which is located below the heater drum 96 and is vertically movable. Therefore, the conveyor belt 100 is given an appropriate tension by the weight of the tension roller 106. As a result, the conveyor belt 100 is pressed against the outer peripheral surface of the heater drum 96 with an appropriate pressing force, and runs while closely contacting the outer peripheral surface of the heater drum 96 without slipping.

Most of the case 94 is a transport roller 86.
The heater drum 96 is also located below the transport path defined by 1. and the heater drum 96 is also located below this transport path. In the case 94, the introduction path 8
A beak-shaped film guide 108 is attached that takes in the films 44 and 82 from the 4 side and guides them between the heater drum 96 and the conveyor belt 100 from the guide roller 102 side.

A beak-shaped film guide 110 extending toward the other side of the guide roller 104 between the heater drum 96 and the conveying belt 100 is attached to the case 94. The heater drum 96 rotates counterclockwise in FIG. 3 to sandwich and feed the films 44 and 82 received from the film guide 108 between the heater drum 96 and the conveyor belt 100, and to feed the films 44 and 82 between them. The drum 96 is heated and developed (heat development).

The films 44 and 82 are guide rollers 104.
On the side, it is extruded from between the heater drum 96 and the conveyor belt 100, guided by the film guide 110 and returned to the conveyor path (the conveyor path formed by the conveyor rollers 86). When returning to this transport path, the films 44, 82 heated in the heating furnace 92
Adheres to the conveyance roller 86A (FIG. 3) having a diameter remarkably smaller than that of the heater drum 96. Therefore, the films 44, 8
The conveyance roller 86 </ b> A imparts a habit of curving, that is, a curl habit, to the item 2.

The films 44 and 82 to which the curl habit has been imparted in this manner are placed in the discharge port 112. The developing-finished films 44 and 82 exiting from the discharge port 112 are sorted into the cut film 44 and the roll film 82 in the storage section 120, and are separately stored.

The accommodating portion 120 is provided with a sorting means 122 for sorting according to the form of the films 44 and 82. The sorting means 122 includes a first roller 124 facing the discharge port 112 and a rear side of the first roller 124 (a side farther from the discharge port 112) than the first roller 124.
The second roller 126 positioned higher and the first roller 1
Third roller and fourth roller 1 located below 24
30 and 30.

An endless belt 132 is wound around these rollers 124, 126, 128 from the outside, and a fourth roller 130 presses the endless belt 132 above the third roller 128 from the first roller 124 side. Therefore, the endless belt 132 is bent into a substantially S shape by the third roller 128 and the fourth roller 130.

The fourth roller 130 is belt driven by an electric motor 134. The motor 134 can switch between forward and reverse rotations, and thus the endless belt 132 can switch between two running directions. Above the endless belt 132, two reel supporting rollers 136 at the same height,
138 are arranged in parallel.

A take-up reel 140 is placed on these rollers 136 and 138. One roller 138 is rotationally driven in a fixed direction by the electric motor 142, and the reel 140 placed on both rollers 136 and 138 is rotated in the winding direction of the roll film 82 (counterclockwise direction in FIG. 3).

The motors 134 and 142 are automatically started and stopped depending on the presence or absence of the films 44 and 82. Further, the rotation direction of the motor 134 is switched depending on whether the conveyed film is the cut film 44 or the roll film 82, that is, the film form. The presence and absence of the films 44 and 82 and the form thereof are detected by the form determining unit 144.

The form determining means 144 is the cut film 4
4 is provided with a sensor 146 provided in the introduction path 84 and a sensor 148 provided in the roll film introduction path 88. Either the sensor 146 or 148 determines whether the carried-in film is the cut film 44 or the roll film 82. That is, if the sensor 146 detects the passage of the film, it is determined that the cut film 44 has been loaded, and if the sensor 148 detects the passage of the film, the roll film 82 has been loaded.

The sensor 146 used here has a structure in which a transmission type optical sensor detects the movement of the lever that swings as the cut film 44 passes. Further, the sensor 148 determines the presence or absence of the roll film 82 by the reflection of light by the roll film 82 entering the roll film introduction path 88. The sensor 148 has a wide width (10
It is possible to detect not only the roll film of 5 mm) but also the roll film of narrow width (16 mm) and the number of films at that time.

The sorting means 122 uses these sensors 14
The rotation direction of the motor 134 is switched based on the outputs of 6 and 148. That is, the sensor 146 is the cut film 44.
3 is detected, the motor 134 rotates counterclockwise to drive the endless belt 132 counterclockwise. For this reason, the cut film 44 in the thermal development zone that has come out to the discharge port 112 is guided below the first roller 124 by this endless belt 132.

This cut film 44 is used for the first roller 1
24 and the endless belt 132 provided below 24
The paper is fed while being sandwiched between and, and the front and back are reversed along the outer peripheral surface of the fourth roller 130. At this time, the cut film 44 is curved in the direction along the outer peripheral surface of the fourth roller 130. Therefore, a curving habit is given. In this embodiment, since the film 44 is curled by the small-diameter transport roller 86A when it is ejected from the heating furnace 92, the curl property attached to the film 44 is further strengthened.

The cut film 44 to which the curl habit has been imparted as described above descends in a direction in which the curved surface thereof is convex downward, and is laminated on the storage box 152. At this time, since the cut film 44 is convex downward, the cut film 44 swings slightly leftward and rightward like a pendulum while keeping the central vicinity thereof at the lowest position and descends while maintaining a stable posture. It is desirable to provide appropriate guide plates 154, 156 and the like to regulate the movement of the cut film 44 to the left and right. Therefore, the cut films 44 are stacked in an orderly manner, and the cut films 44 do not rub each other, and there is no risk of scratching the surface.

Microfilm recording section 1 of this embodiment
In FIG. 4, since the laser beam is guided to the lower surface of the dry film 30 as shown in FIG. 1, the transparent support (base film) is on the upper surface of the film 30 and the emulsion is applied to the lower surface. Therefore, in the heat developing device 80, the cut film 44 is conveyed with the emulsion coated surface facing down. The cut film 44 is used as the fourth roller 1 of the sorting means 122.
It is turned upside down by 30 and collected in a storage box 152 with the emulsion coated surface facing up.

The microfilm recording section 14 records so that the recorded image can be seen correctly when the dry film 30 is viewed from above, that is, when it is viewed from the transparent support side opposite to the emulsion coated surface. Since the transparent support is laminated in the accommodation box 152 so that it is below, the accommodation box 1
When 52 is turned upside down and the laminate inside is taken out, the cut films 44 are laminated on the laminate in the order in which they were recorded, at which time the images can be viewed correctly from the table.
Therefore, the cut film 44 can be easily organized.

When the sensor 148 detects the entry of the roll film 82, the sorting means 122 rotates the motor 134 in the opposite direction. Therefore, the endless belt 132 is fed in the clockwise direction. Further, the motor 142 is activated to rotate the reel 140 counterclockwise. Therefore, the outlet 112
The heat-development-finished roll film 82 that has emerged in the above is guided to above the first roller 124 by this endless belt 132 and wound on the reel 140.

Next, the temperature control system of the heating furnace 92 of the heat developing apparatus 80 will be described with reference to FIG. In FIG. 6, reference numeral 200 is a microcomputer. The optimum heat development condition is determined based on the film form and the heater drum temperature, and at least one of the heat generation amount of the heater 98 and the film feeding speed is controlled.

The form of the film is detected by the film form discriminating means 144, that is, the sensors 146 and 148. The temperature of the heater drum is detected by the temperature sensor 202 near the surface of the heater drum 96. This temperature sensor 202, as shown in FIGS.
It is attached to a substantially gate-shaped support member 204 that straddles the upper part of the structure 6.

The temperature sensor 202 is, for example, a thermocouple or thermistor, and is attached so as to be extremely close to the outer peripheral surface of the heater drum 96. One temperature sensor 202 may be provided near the center of the heater drum 96 in the width direction, but a plurality of temperature sensors 202 may be provided so as to detect different positions in the width direction of the heater drum 96.

The computer 200 performs various operations according to an operation program stored in advance. Its functions are a drum temperature detecting section 206, a heating control section 208,
And a memory 210. The heater temperature detection unit 206 detects the surface temperature of the heater drum 96 based on the output of the temperature sensor 202.

The memory 210 is composed of the dry films 44, 8
The developing heating conditions of No. 2 are stored for each film form. For example, optimum conditions for a cut film 44 having a predetermined width (for example, 105 mm), optimum conditions for a roll film 82 having a predetermined width (for example, 105 mm), and conditions for developing one roll film having a narrow width (for example, 16 mm). Also, the conditions and the like for developing two in parallel at the same time are stored. Memory 21
0 stores these conditions by an appropriate method such as a map format or an arithmetic expression.

The heating conditions for these developments are as follows:
If the rotation speed of 6 is constant, it can be set by the surface temperature of the heater drum 96. For example, in a wide roll film 82, since the amount of heat absorbed by the film 82 is large, the surface temperature is set high. With the cut film 44 having the same width, the amount of heat absorption is smaller than this, so the surface temperature is set to be slightly lower. When two roll films with a narrow width (16 mm) are hung and processed in parallel at the same time, the surface temperature is set lower. Further, when processing one roll film having this narrow width, the surface temperature is set to the lowest.

The surface temperature of the heater drum 96 is kept constant,
The optimum developing condition can be determined by changing only the rotation speed of the heater drum 96. The optimum developing condition may be determined by simultaneously monitoring the surface temperature and the rotation speed. In this case, when the temperature of the heater drum is low at startup of the apparatus, the rotation speed may be slowed down, and the rotation speed may be increased as the temperature of the heater drum rises.
In this case, the startup time of the device can be shortened.

The heating control unit 208 sets the optimum development heating condition corresponding to the film form detected by the film form determining means 144 (that is, the sensors 146 and 148) in the memory 2.
10 is read out and the amount of heat generated by the heater 98 or the rotational speed of the heater drum 96 is controlled. At this time, the surface temperature of the heater drum 96 detected by the temperature sensor 202 is compared with the temperature of the drum read from the memory 210, and the heat generation amount of the heater 98 is controlled so as to minimize the difference between them.

In the heater 98, the heater current is controlled by the heater driver 212 by, for example, the phase control method, and the amount of heat generated is controlled. When the heating control unit 208 controls the rotation speed instead of or together with the heat generation amount of the heater 98, the rotation speed of the motor 97 is controlled by the drum motor driver 214. In FIG. 6, 216 is a motor driver for switching the rotation direction of the sorting motor 134.

According to this embodiment, first, the heater drum 9 is rotated by the heater 98 while rotating the heater drum 96.
Heat 6 The temperature sensor 202 detects the surface temperature of the heater drum, and when this temperature reaches a predetermined value, preparation for heat development is completed (startup is completed). Then, the microfilm recording unit 14 is started and the cut film 44 on which the latent image is formed is discharged from the microfilm recording unit 14.

When the sensor 146 provided in the introduction portion 84 detects this, the sorting motor 134 causes the endless belt 132.
Is moved counterclockwise to guide the developing zone film coming out of the discharge port 112 to the accommodation box 152. Roll film 8
The sensor 148 detects this when 2 is introduced.
At this time, the sorting motor 134 rotates in the opposite direction to guide the roll film 82 in the development zone to the reel 140.

The outputs of these sensors 146 and 148 are also input to the heating control unit 208. The heating control unit 208 reads the optimum developing and heating conditions for the cut film 44 or the roll film 82 from the memory 210, and the heater 98
Control the heat value of. As described above, the rotation speed of the heater drum 96 may be controlled instead of or together with this heat generation amount.

In this embodiment, the surface temperature near the center of the heater drum 96 is detected by one temperature sensor 202, but a plurality of temperature sensors may be arranged in the width direction of the heater drum 96. In this case, the temperature sensor to be used can be switched in accordance with the change in the surface temperature distribution when one or two roll films having a narrow width (for example, 16 mm) are hung on, thereby enabling highly accurate temperature control. .

When the thickness of the films 44 and 82 to be heat-developed changes, it is preferable to store the development heating condition for the film thickness in the memory 210. At this time, the film thickness is determined by the system console 16 described above.
It is better to input from the keyboard.

In this embodiment, as shown in FIG. 3, the sensor 158 is also provided on the conveyance path near the discharge port 112. With this sensor 158, the introduction paths 84 and 88 are provided.
After the sensors 146 and 148 provided in the sensor detect the films 44 and 82, the films 44 and 82 are not detected.
The time to reach the 58 position can be monitored.
From this time, it is detected that the films 44 and 82 are jammed in the developing device 80 and a trouble occurs in the conveyance, and the device 8
0 can be stopped to protect the films 44, 82.

[0065]

As described above, according to the first aspect of the invention, the optimum heating conditions for development are read out from the memory and the heating conditions are controlled for the form of the film to be heat-developed. Even if different, you can always develop under the optimal development conditions, stabilize the finished state of development,
The finished quality can be improved.

The temperature of the heater drum is stored in the memory as a development heating condition for each film form, the surface temperature of the heater drum is detected by a temperature sensor, and the heater drum temperature read from this memory is compared with the detected surface temperature. Meanwhile, the heat generation amount of the heater can be controlled (claim 2). In the memory, the rotation speed of the heater drum may be stored as the development heating condition instead of or in addition to the temperature of the heater drum, and the rotation speed of the heater drum may be controlled (claim 3). The speed and the speed may be controlled simultaneously (claim 4).

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a COM system according to an embodiment of the present invention.

[Figure 2] Functional block diagram

FIG. 3 is a front view of a heat developing device.

[Fig. 4] Front sectional view of the heating furnace

[FIG. 5] Similarly, a sectional view of the center side

FIG. 6 is a diagram showing a control system.

[Explanation of symbols]

 30 Dry Film 44 Cut Film 82 Roll Film 84 Cut Film Introducing Route 86 Conveying Roller 88 Roll Film Introducing Route 92 Heating Furnace 96 Heater Drum 97 Heater Drum Motor 98 Heater 200 Microcomputer 202 Temperature Sensor 206 Drum Temperature Detector 208 Heating Control unit 210 memory

Claims (4)

[Claims] 1. A heat developing apparatus for developing a roll film type or cut film type dry film on which a latent image is formed by a laser beam with heat, in which the dry film is rotated while being brought into close contact with the outer peripheral surface to perform heat development. A heater drum for performing, a heater for heating the heater drum from the inside, a form determining means for determining the form of the dry film provided in the introduction path for the dry film, and a developing heating condition for each form of the dry film are stored. And a heating controller for controlling the developing and heating conditions by obtaining the developing and heating conditions for the film form determined by the form determining unit from the memory. 2. A temperature sensor is provided on the heater drum, while the temperature of the heater drum is stored as a developing heating condition in the memory, and the heating controller stores the temperature detected by the temperature sensor and the memory. The heat developing apparatus according to claim 1, wherein the heat generation amount of the heater is controlled while comparing the temperature of the drum. 3. The heat developing apparatus according to claim 1, wherein the memory stores a feed rate of a dry film as a heating condition for development, and the heating control section controls the feed rate of the film according to a film form. 4. A temperature sensor is provided on the heater drum, while developing heating conditions determined by the temperature of the heater drum and a film feed speed are stored in the memory, and the heating controller detects the temperature sensor. The heat developing apparatus according to claim 1, wherein the heat generation amount of the heater and the film feeding speed are controlled according to the film form while referring to the temperature to be set.