JPS61184546A - Heat developing device - Google Patents

Abstract

PURPOSE:To prevent irregularity of heating and deviation of carrying by stopping a sensitized material with the end of the heat developing photosensitive material rolled in, heating a heat drum for a fixed time and heat developing the photosensitive material. CONSTITUTION:When tips of a heat developing film and an image receiving paper are superposed and inserted from an insertion port between a metallic drum 1 heated to a fixed temperature and a heat resistant belt 3, insertion is detected by a detected by a detecting device, and the drum is rotated in the direction of arrow mark. As the heat resistant belt 3 is pulled by pulling force of a spiral spring 5 in the direction reverse to the direction of rotation of the metallic drum 1 at all times, the film and image receiving paper are wound in tightly while being pressure contacted between the drum 1 and belt 3. When rotation of the drum 1 goes on rolling in the belt 3 and a cam for controlling rotation 12 makes one rotation, a one rotation detecting switch 14 operates to stop a driving motor 10, and heat developing is made for a fixed time with the drum 1 stopping its rotation. Thus, irregularity of heating and deviation of carrying are prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a thermal block imaging device, and more particularly, the present invention relates to a thermal block imaging apparatus, and more specifically, to prevent misalignment during conveyance of a heat-developable photosensitive material and image-receiving paper that are overlapped, and to prevent partial heating. The present invention relates to a thermal imaging device with improved fML degree unevenness.

(Prior Art) Conventionally, developing devices and developing methods for heat-developable optical materials have been disclosed in Japanese Patent Application Laid-open Nos. 54-158230 and 1982-1582.
No. 31, No. 55-2281 g, No. 56-1939,
Sono No. 56-4904, each public axle load research, the method of pressing against a heat block for a certain period of time, the method of moving on a heat block, the method of using a heat drum, the method of hot air described in Flow Roger No. 16810 and No. 17623. A developing method using rounded infrared rays, 11L flow, or microwave is known.

In addition to the above, there is no mention of a thermal development transfer device, for example, in Special B No. 59-247991 Akiyuzubai, which consists of a heater block of paper inside the heater and a conveyor belt facing the station heater tap. ing. Also, RD shop 17635 has -f:
A thermal development and transfer device consisting of two adjoining belts each heated by a built-in heater is installed.

The thermal development apparatuses and thermal development methods known above are systematically classified and more specifically described as follows.

(1) A method in which the thermal development film is developed while being held and conveyed by a rotating thermal drum and a conveyor belt.

(2) The heat-developable film is held between two upper and lower conveyor belts and conveyed over the heating member. ! A method of performing F-thermal development using the heat of the heated belt.

(31) A method of thermal development in which a rotating transport drum and a fixed heating member are used to fully press and slide the film.

However, for the above-mentioned heat development people, the pressure of the heat development film against the heating member is generally insufficient.
By the way, local temperature unevenness tends to occur in heat-developable films.
In addition, when the heat developing film and the image receiving paper are all conveyed together, there is an inconvenient drawback in that ffi feed misalignment is likely to occur between the two.

(Problems to be Solved by the Invention) Therefore, from the above points of view, the present invention was designed to improve the above-mentioned drawbacks. It is an object of the present invention to provide a thermal developing device which is difficult to transport and which does not cause transport melee between the thermal developing film and the image receiving paper even when they are transported in a superimposed state.

(Means for Solving the Problems) According to the present invention, the above-mentioned object of the present invention is to press a heat-resistant belt onto the surface of a freely rotatable heat drum, and as the heat drum rotates, the heat-resistant belt The heat-developable photosensitive material is rotated while being held and rolled up by a hot drum and then stopped with the end portion of the heat-developable photosensitive material being rolled up, and the heat-developable photosensitive material is heated for one hour by heating the hot drum. This can be achieved by using a heat developing device in which the heat-developable photosensitive material is thermally developed, and after a required period of time has elapsed, the hot drum is rotated in reverse, the heat-resistant belt is peeled off from the surface of the hot drum, and the photothermographic material is discharged from the device.

The non-invention will be explained in more detail below.

In the present invention, after the entire image-receiving paper is folded onto the heat-developable photosensitive material as described above, it is sandwiched between a heat-resistant belt and a heat drum, and is conveyed while softening as the heat-developable photosensitive material rotates, thereby removing the end portion of the photothermographic material. Stopped in storage, heat developed, then heat drum? Reverse rotation causes the L9 thermothermal block material to be discharged from the apparatus, which is related to the thermal developing apparatus.

The heat-developable photosensitive material used in the present invention is a heat-developable color sensory material containing a dye-donating substance that releases a diffusible dye upon heat development, and includes an image-receiving layer. After exposing a color image to the diffusion transfer type heat-developable color photosensitive material using the image-receiving material, the heat-developable photosensitive material placed in a relationship with the image-receiving layer is uniformly heated, and after heat development, or at the same time. This method is particularly suitable for a color image forming method in which a color image is obtained by thermally transferring the released or formed diffusible dye to an image-receiving layer.

The heat-developable photosensitive materials that can be used in the present invention include:
For example, JP-A-59-52440, JP-A No. 59-15444
5 Zanj River No. 59-124327, No. 59-164903
positive-type heat-developable photosensitive materials described in the Tani publications or specifications of JP-A-58-42779; -149046, same 5
No. 8-149047, No. 59-12431, Jun 59-
No. 48705, No. 59-181345, and Japanese Patent Application No. 58-109293, No. 59-79887, No. 59
-181604, 59-182507, 59-
Publications such as No. 179657 and No. 59-182506,
Heat-developable photosensitive materials such as those disclosed herein are useful.

Such heat-developable photosensitive materials are disclosed, for example, in Japanese Patent Application Laid-Open No. 59-15
No. 2440, No. 59-154445, No. 59-124
No. 320, Japanese Patent Application No. 58-42779, etc. disclose photosensitive silver halides (which may contain organic silver salts), electron donors and/or precursors thereof, and/or electron transfer agents. , a dye donor which releases a thermally transferable dye when reduced under high temperature conditions [7], or photosensitive halogenated chestnuts (preferably organic@salt-rich), which contain halogens on the exposed surface under high temperature conditions. These are photosensitive materials that are dye-donating substances that do not release heat-transferable dyes due to oxidation due to both silver oxide or organic silver salts and 7.

Such a light-sensitive material provides a heat-transferable dye that can be placed in a positive-positive relationship with a silver image that is in a non-carbodic relationship with the original simply by performing image exposure using ordinary negative-working silver halide and then thermal development.

! Another type of photosensitive material is a light-sensitive material containing a dye-providing substance that releases or deforms a thermally transferable dye upon heating. Such dye-donating substances include silver halide,
Or, when heated, a coupling reaction occurs with an oxidized form of a reducing agent oxidized by an organic silver salt or both, and as a result, the dye residue that separates from the fogging site of the dye donor becomes a heat transferable dye (for example, , JP1857-1
No. 86744, No. 57-207250, Oka 59-48
765-q, No. 59-116642, No. 59-116
No. 643 and No. 59-159159), as well as those utilizing thermal transferable dyes formed by coupling the oxidized form of the reducing agent and the dye-donating substance (for example, JP-A-58-149046, No. 58-149047,
No. 59-124339, No. 59-1813459, I
#Gan Sho 58-109293, Sho 59-79887,
Oka No. 59-181604, Oka No. 59-182507, [
(described in Kawa No. 59-179657, Kawa No. 59-182506, etc.). Another dye-donating substance is reducing 7
In 7, the dye-providing substance is oxidized by halogenated fjM, an organic silver salt, or both when heated, and releases a thermally transferable dye in the presence of a dye release aid (e.g., JP-A-57-179840). No. 57-198458
No., reIU58-58543 % reIU59-16843
9 etc.).

By subjecting these heat-developable photosensitive materials to thermal block imaging after 11 exposures of the image, a thermally transferable dye image can be formed image-wise depending on the type.

The image-receiving material that can be used in the present invention is one in which an image-receiving material/fli' is formed on a support, in which all of the dye released from the heat-developable photosensitive material by heating can be suppressed. This image-receiving layer contains a dye mordant, and the mordant can be selected depending on the properties of the dye to be released, other components abundant in the heat-developable light-sensitive material, transfer conditions, and the like. For example, Japanese Patent Publication No. 57-186744 and Japanese Patent Publication No. 59-181
High molecular weight polymer mordants such as those described in No. 345 may be used.

After imagewise exposure of the W& source material using the color diffusion transfer type heat-developable photosensitive material described above, an image receiving layer is formed on the exposed surface of the W! A color image can be obtained by superimposing the image-receiving sheets so that the image-receiving sheet is coated, then heating the gold-thermal ingot of the combined photosensitive material and thermally diffusing the image-formed color image onto the image-receiving sheet. .

In these heat development transfer methods, visible light is used as the image source light source for writing a latent image on the heat development photosensitive material, such as a tungsten lamp, a mercury lamp, a halogen lamp such as an iodine lamp, or a key lamp. In addition, it is possible to use a laser, source, (RT source light source, firefly tube, LED, etc.).Also, as the exposure method, a normal full exposure method may be used for video images and TV stations. The image signals sent from the CRT+FOT may be scanned and exposed using a lens or under close observation.Furthermore, a tilting method such as slit exposure used in a normal electrophotographic method may be used.

The peeling step following the exposure, overlaying, and mechanical thermal development transfer steps may be performed manually or automatically using known methods.

Further, the transfer of the thermal transfer dye to the image receiving layer is usually carried out using a thermal mass gj!
The peeling process is carried out using a diffusion aid contained in the photosensitive material or the image-receiving sheet, and the peeling process is carried out in the transfer device.Although a known peeling apparatus can be used, there is no need for the heating process. 1- The peeling may be performed within the device, and the peeling may be performed manually. The present invention relates to a heat development method and an apparatus thereof among these steps.

(Examples) Hereinafter, the thermal mass imaging of the present invention will be specifically explained with reference to the examples shown in all the drawings.

, 71 is a perspective view schematically showing the arrangement of the thermal bowl imaging device of the present invention.

In the figure, 1 is a metal drum with a smooth plated surface and excellent heat conduction, and 2 is a sheet heater installed along the inner circumference of the drum 1. Must have. Further, numeral 3 has one end fixedly attached to the metal drum 1, and is locked to the nfC retaining member 4, and the other end is secured to the spring spring 5. Therefore, the sheet heat-resistant belt 3 is It is wound up by Senmai Bai 5. Numeral 6 is a knob that adjusts the tension of the mainspring spring 5, and when turned clockwise, the tension of the spring increases. 7 completely stops the return of the mainspring spring 5 by the ratchet clock 8.

The connection @ for the ratchet 7 of the upper dself 0tsuk 8 is the spring 9
In the figure, 10 is a drive motor, 12 is a clutch (not shown) that is engaged with a clutch and a rotation control cam, and 13 is a clutch with the above-mentioned one rotation IT + control cam 12. The driving pulley ('!Next is the gear) that is locked to the .

Reference numeral 14 denotes a one-rotation detection switch, which disconnects the clutch and stops the drive motor 10 when one rotation of the -rotating joint cam 12 is detected.

Reference numeral 15 denotes a cam lock for locking the metal drum l from rotating due to the tensile force of the spiral spring 5 when the MA drive motor 10 stops. 16
The cam lock 15 'i @ has a spring to make it work,
Further, reference numeral 17 is a llenoid that releases the cam lock 15 when the heat development processing time of the pheasant ends.

Furthermore, the sure hit 18 is the drive 7-ri (or gear) 1.
Therefore, even if the drive gear (or gear) 13 rotates once, the metal drum 1 does not rotate once.

19 is a timing belt for drive transmission (actually a chain)
It is.

, 1-2 are schematic front views of the above-mentioned heat developing apparatus of the present invention when the roughening section is housed and arranged in the main body of the apparatus. In the figure, 21 is the main body of the apparatus, and 22 is a guide roller for the heat-resistant belt 3. In the heat development apparatus of the present invention, in order to facilitate the insertion of the heat-processed photosensitive material into the apparatus, the input passageway formation resistance of the p+ plate population is made.

A heat development process using the heat development apparatus of the present invention formed as described above will be described below.

The leading edges of thermally developed photosensitive materials, such as thermally developed film and image receiving paper, are twisted together to form a stylus, and then inserted through the inlet of the device between a metal drum 1 heated to a constant temperature and a heat-resistant belt 3. do.

The insertion of the above * category is detected by a detection plate (not shown), and a clutch (not shown) is connected, and the drive motor 10 is driven. One revolution control cam 12 and the drive pulley (or gear) 1 are connected to the rotation of the drive motor f'lO via a reduction gear and a clutch (not shown).
With the 3V ζ transmission, rotate the MA drive transmission timing belt or chain 19 fully, and rotate the heated metal drum fully in the direction of the arrow.

Since the heat-resistant belt 3 is always pulled in the opposite rotational direction to the metal drum 1 by the tensioner of the senmai bi 5, the heat-resistant belt 3 is not connected to the thermal fA image film. & is tightly rolled up between the metal drum l and the heat-resistant belt 3 while being tightly pressed together.

The rotation of the metal drum 1 progresses as the heat-resistant belt 3t+ is compressed, and when the one-rotation control cam 12 rotates once, the one-rotation detection switch 14 is activated and the drive motor 10 is stopped.

When the drive motor 10 stops, the cam lock 15 operates when the drive motor 10 is opened, and engages with the one-rotation control cam 12 to prevent the metal drum l from being reversed by the tension of the spiral spring 5.

In the present invention, the diameter of the drum rotation pulley (or gear) 18 is larger than that of the drive pulley (or gear) 13, so that the drum 1 does not rotate once.

With the metal drum 1 completely stopped, a timer (not shown) operates and heat development processing is performed for a certain period of time.

The visual temperature is 80°C to 250°C, preferably 120°C to 2
00℃@Ruru. When the visual image processing is completed, the lens 17 is activated and the sword Murotsuku 15 is removed. When the cam lock is disengaged, the connection between the drive motor 10 and the reduction gear is released, and the clutch is activated to free rotation and lock the gear.
The metal drum 1 rotates in the opposite direction due to the tensile force of the semi-sensor spring, and the heat-resistant belt 3, which was wound around the metal drum l, is wound up. Stop. In this way, the heat-developed film and receiver paper are returned to the insertion slot, and the heat-developing process is completed.

Control of the drive system in the heat development process of the present invention includes:
This is done by using a basic circuit as shown in Figure 3. Further, in the thermal 3A imaging device of the present invention, the heat-resistant belt is fixed to the metal drum using a locking member, but instead of the locking member, the entire end of the heat-resistant belt is temporarily attached.
For example, it is possible to provide a protruding member that can be hooked and locked so that it can be attached freely, and a heat-resistant belt can be wrapped around a roller that is supported on a shaft that can be attached to a metal drum. It is okay to lock it. Furthermore, heating the heat-resistant belt 3 during storage can be very effective, for example, if the tension guide roller 22 is used as a preheating roller.

(Effects of the Invention) In the heat development apparatus of the present invention, the thermally imageable photosensitive material is tightly pressed between the heated metal drum and the heat-resistant belt that is inserted into the drum as the drum rotates. Since the heated visual imaging is performed when the conveyance stops when the photosensitive material and the image receiving paper are held, the thermal efficiency is good and there is no local heating unevenness. Heat development can be performed without causing any misalignment.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a schematic configuration of the heat developing device of the present invention, Figure 2 is a normal IfI diagram showing a schematic configuration of the same device when it is housed in the main body of the device, and Figure 3 is a perspective view of a drive unit. This is the basic circuit diagram for controlling the system. ■・・・・・・(7J11 heated) metal drum, 3・
...Heat-resistant belt, 4...Locking member, 5.
... Senmai spring, 7... Ratchet,
8...Lock, lO...Drive motor, 12...-Rotation control cam, 13...
・1-re for driving ・14...One rotation detection switch, 15...Cam lock, 17...Turenoid, 18...Pulley for drum rotation, 19.・
...Drive transmission timing belt. Applicant Konishiroku Photo Industry Co., Ltd. Figure 1 Figure 2

Claims (3)

[Claims] (1) A heat-resistant belt is pressed against the surface of a freely rotatable heat drum, and as the heat drum rotates, the heat-developable photosensitive material is rotated while being held and wound between the heat-resistant belt and the heat drum, and the heat-developable photosensitive material is rotated. The photosensitive material is stopped with the end of the photosensitive material wrapped around it, and the heat-developable photosensitive material is thermally developed by heating the hot drum for a certain period of time.After the predetermined period of time has elapsed, the hot drum is rotated in the opposite direction, and the heat-resistant belt is attached to the surface of the hot drum. A heat development device characterized in that a heat-developable photosensitive material is discharged from the device by being peeled from the photothermographic material. (2) The heat developing device according to claim 1, characterized in that one end of the heat resistant belt is pivotally attached to the surface of the heat drum, and the other end of the heat resistant belt is locked by applying tension. . (3) The heat developing device according to claim 2, wherein the means for applying tension to the heat-resistant belt is one in which an end portion of the heat-resistant belt is locked to a winding core of a spiral spring.