JPH0273352A - Heat developing and transfer device - Google Patents

Abstract

PURPOSE:To obtain an excellent image without causing nonuniformity in developing and transfer by providing a material guiding means which moves a material positioned on a drum side along the outer circumference of the drum on the more upstream side of a winding direction than a superposing roller. CONSTITUTION:The material guiding means 50 which move the material 16 positioned on the drum 34 side along the outer circumference of the drum 34 on the more upstream side of the winding direction than the superposing roller 60 are provided. The material 16 positioned on the drum 34 side is guided by the material guiding means 50 and moved along the outer circumference of the drum 34 on the more upstream side of the winding direction than the superposing roller 60 in such a way. Therefore, the relative angle of a heat developing photosensitive material 16 and an image receiving material 32 which are sandwiched by the superposing roller 60 and the drum 34 is made large. Besides, defective superposition such as both materials are superposed under the state that they nonuniformly contact each other or the state that air is mixed into them is prevented from occurring when they are superposed. Thus, the excellent image can be obtained without causing the nonuniformity in the developing and the transfer.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a heat development transfer device, in particular, a heat development transfer device in which a heat development photosensitive material with an image exposed thereon is superimposed on an image receiving material and heated while being wrapped around the outer periphery of a drum. The present invention relates to a thermal development transfer device that thermally develops a photothermographic material and transfers an image to an image-receiving material.

[Prior art] An image is exposed onto a heat-developable photosensitive material, and the heat-developable photosensitive material is superimposed on an image-receiving material and heated, whereby the heat-developable photosensitive material is thermally developed and the image is transferred to the image-receiving material. 2. Description of the Related Art Heat development transfer devices for obtaining images are known.

This type of thermal development transfer device is equipped with a heating drum and an endless pressure belt that is in pressure contact with the outer periphery of the heating drum.Furthermore, an overlapping roller that is in contact with the outer periphery of the heating drum is arranged near the endless pressure belt. It is located. The image-exposed photothermographic material is superimposed on the image-receiving material by the superimposing roller, and then fed between the heating drum and the endless pressure belt and wound around the outer periphery of the heating drum.

Each F material is sandwiched and conveyed for a predetermined period of time in an overlapping state between a heating drum heated to about 90°C and an endless pressure belt, whereby the heat-developable photosensitive material is thermally developed. The image exposed on the light-sensitive material is transferred to an image-receiving material.

[Problem to be Solved by the Invention] When the photothermographic material and image receiving material are sandwiched between the photothermographic material and the image-receiving material, which are sandwiched by the superimposing roller, as described above, the two materials are superimposed and supplied by the superimposing roller. If the relative angle between the two materials is narrow, poor overlay may occur such as uneven contact between the two materials or overlapping with air mixed in at the time of overlapping.

For this reason, when an image recorded on a heat-developable photosensitive material is transferred to an image-receiving material, uneven development and transfer occurs, and a good image may not be obtained.

The present invention takes the above-mentioned facts into account, and when the heat-developable photosensitive material on which the image has been exposed is superimposed on the image-receiving material and wound around the outer periphery of the drum, the two materials can be overlapped uniformly, thereby eliminating development transfer unevenness. It is an object of the present invention to provide a thermal development transfer device that can obtain good images without causing problems.

[Means for Solving the Problems] A thermal development transfer device according to the present invention superimposes an image-receiving material and a heat-developable photosensitive material arranged on the outer periphery of a drum and having an image exposed thereon by sandwiching the image-receiving material between the drum. A thermal development transfer device, which has a superimposing roller wound around the outer circumference of the drum, heats it while being wound around the outer circumference of the drum, and thermally develops the photothermographic material and transfers an image to the image-receiving material, A material guide means is provided for moving the material located on the drum side along the outer periphery of the drum upstream of the overlapping roller in the winding direction.

[Function] In the thermal development transfer device having the above configuration, the photothermographic material on which the image has been exposed is sandwiched between the overlapping roller and the drum, thereby overlapping the image-receiving material.

Furthermore, the photothermographic material and the image receiving material that have been superimposed are wound around the outer periphery of the drum while remaining in the superimposed state. Thereafter, the photothermographic material is thermally developed by being heated by the drum, and the image is transferred to the image-receiving material.

When the photothermographic material and the image-receiving material are superimposed, the material located on the drum side is guided by the material guide means, and the wrapping is moved along the outer periphery of the drum on the upstream side of the superimposing roller. Ru. For this reason, the relative angle between the heat-developable photosensitive material and the image-receiving material sandwiched by the overlapping rollers becomes large, and at the time of overlapping, the two materials may come into uneven contact or overlap with air mixed in, etc. Overlay defects will no longer occur.

Therefore, when the materials are superimposed and supplied to the outer periphery of the heating drum and then heated, thereby being thermally developed and transferring the image, a good image can be obtained without uneven development and transfer.

The image recording apparatus applied to the present invention includes a heat developing section that heat-develops the exposed heat-developable photosensitive material, and a heat-developable photosensitive material and an image-receiving material that are overlapped and heated to form an image on the image-receiving material. The transfer section for transferring the image may be provided separately, or the heat development section and the transfer section may be provided at the same location, that is, the exposed heat-developable photosensitive material and the image-receiving material may be overlapped. A thermal development and transfer section may be provided that heats the image and performs thermal development and thermal transfer at the same time.

Further, in the image recording device applied to the present invention, for example,
U.S. Patent No. 4430415, U.S. Patent No. 4483914,
4500626, 4503137, JP 59-154445, JP 59-165054,
JP-A-59-180548, JP-A-59-21844
No. 3, JP-A-60-120356, JP-A-61-88
No. 256, Japanese Patent Application Publication No. 1983-238056, Patent Application No. 1983-
169585, Japanese Patent Application No. 60-244873, and the like can be used. .

[Example code] The present invention will be explained in detail below.

FIG. 1 shows an image recording apparatus 10 to which a thermal development transfer device according to a first embodiment of the present invention is applied.

The image recording device 10 has a magazine 14 housed in the machine base 12.
A heat-developable photosensitive material 16 in the form of a ferrode is housed therein.

The photothermographic material 16 is pulled out from its outer periphery, cut into a predetermined length by a cutter 18, and then wound around the outer periphery of a rotating drum 20 in the direction of arrow A.

An exposure head 22 is disposed corresponding to the outer periphery of the rotating drum 20, and rotates the rotating drum 20 at high speed to expose an image onto the wound photothermographic material 16.

After exposure, the photothermographic material 16 is transferred by rotating the rotating drum 20 in reverse (
In the direction of arrow B), the rotating drum 20 is removed by the scraper 24.
After being peeled off from the film and being coated with water as an image forming solvent in a water application section 26, it is sent to a heat development transfer section 28, which is a heat development transfer device.

A heating drum 34 and an endless pressure belt 36 as pressure contact means are arranged in the thermal development transfer section 28 . In this embodiment, the heating drum 34 is formed to have an outer diameter of 140 mm. Further, a halogen lamp 38 is disposed inside the heating drum 34, and the outer periphery of the heating drum 34 is heated to about 90° C. by the halogen lamp 38.

The endless pressure belt 36 is wound around a tension roller 37, 39, 41, 43 having an outer diameter of 2Q mm, and its endless outer side is pressed against the outer periphery of the heating drum 34.

As shown in detail in FIG. 2, the endless pressure belt 36 on the outer periphery of the heating drum 34 is wound around the tension roller 37 in the vicinity of a portion where the overlapping roller 60 is placed in contact with the outer periphery of the heating drum 34. ing. This overlapping roller 60 is a rubber roller with an outer diameter of 25 mm.

Furthermore, a plurality of guide rollers 50 as material guiding means are arranged upstream of the overlapping roller 60 in the direction of conveyance of the photothermographic material so as to be in contact with the outer periphery of the heating drum 34 . The guide roller 50 is a rubber roller having an outer diameter smaller than that of the overlapping roller 60.

The guide roller 50 moves the photothermographic material 16 fed from the water application section 26 in a curved state along the outer periphery of the heating drum 34 and guides it to the overlapping roller 60.

The heat-developable photosensitive material 16 coated with water and passed through the overlapping roller 60 is supplied between the heating drum 34 and the endless pressure belt 36, is nipped and conveyed over approximately 2/3 of the circumference of the heating drum 34, and is then thermally developed. It is now possible to do so.

On the other hand, a tray 30 disposed below the thermal development transfer section 28
Inside are a plurality of image receiving materials 3 cut to a predetermined length.
2 is accommodated. This image receiving material 32 is placed on a tray 30
The sheets are sequentially taken out one by one by a supply roller 44 arranged on the side of the sheet. Image receiving material 3 taken out
2 is supplied between the heating drum 34 and the overlapping roller 60 of the thermal development transfer section 28 .

The image receiving material 32 guided to the overlapping roller 60 is overlapped with the photothermographic material 16 and is supplied between the heating drum 34 and the endless pressure belt 36 in the overlapping state.

The heat-developable photosensitive material 16 is overlapped with the image-receiving material 32 in the heat-developable transfer section 28 and heated in the same state to be thermally developed, and the image is transferred to the image-receiving material 32 to obtain an image on the image-receiving material 32. It looks like this.

A peeling means 48 is arranged on the side of the heat development transfer section 28, and separates the heat development photosensitive material 16 and the image receiving material 32 sent out from the heat development transfer section 28 and sends them out. The separated heat-developable photosensitive material 16 is sent to a waste photosensitive material storage box 59, while the image-receiving material 32 is dried in a drying device 52 and then placed on a take-out tray 54 formed at the top of the machine stand 12. It is designed to be sent to

Next, the operation of this embodiment will be explained.

When the photothermographic material 16 drawn out from the magazine 14 is cut by the forceps 18 and wound around the outer periphery of the rotating drum 20, the rotating drum 20 rotates at high speed and an image is exposed by the exposure head 22.

After exposure, the photothermographic material 16 is peeled off by a scraper 24, coated with water at a water coating section 26, and sent to a guide roller 50 disposed in a thermal development transfer section 28. The guide roller 50 moves the fed photothermographic material 16 in a curved state along the outer periphery of the heating drum 34 and guides it to the overlapping roller 60 .

On the other hand, the image receiving material 32 in the tray 30 is taken out one by one by the supply roller 44, and further, the image receiving material 32 is taken out one by one by the supply roller 44, and
It is sent to the overlapping roller 60 of.

The image receiving material 32 sent to the overlapping roller 60 is
The photothermographic material 16 is guided to the overlapping roller 60 in a curved state by the guide roller 50, and is overlaid and brought into close contact with the photothermographic material 16.

The heat-developable photosensitive material 16 and the image receiving material 32 which have been superimposed by the superimposing roller 60 are fed between the heating drum 34 and the endless pressure belt 36 (the tension roller 37 is partially wrapped) while the photothermographic material 16 and the image receiving material 32 are overlapped. and wrapped around the outer periphery of the heating drum 34.

The heat-developable photosensitive material 16 and image-receiving material 32 sent to the heat-develop transfer unit 28 remain in close contact with each other between a heating drum 34 heated to approximately 90° C. by a halogen lamp 38 and an endless pressure belt 36. approximately 2/3 of heating drum 34
The photothermographic material 16 is pinched and conveyed around the circumference and thermally developed, and the image recorded on the photothermographic material 16 is transferred to the image receiving material 32.

In this way, when the photothermographic material 16 and the image receiving material 32 are superimposed by the superimposing roller 60,
The heat-developable photosensitive material 16 located on the drum side is guided by the guide roller 50, and is moved in a curved state along the outer periphery of the heating drum 34 upstream of the overlapping roller 60 in the winding direction, so that the overlapping is possible. The relative angle between the heat-developable photosensitive material 16 and the image-receiving material 32 sandwiched by the rollers 60 becomes large, resulting in overlapping in which the two materials contact unevenly or overlap with air mixed in at the time of overlapping. Defects will no longer occur.

Therefore, when the materials are superimposed and supplied to the outer periphery of the heating drum 34 and then heated, thermally developed and an image is transferred, a good image can be obtained without uneven development and transfer.

After the transfer, the heat-developable photosensitive material 16 and the image-receiving material 32 are separated by the peeling means 48, the heat-developable photo-sensitive material 16 is sent to the waste photo-sensitive material storage box 59, and the image-receiving material 32 is transferred to the take-out tray 54 via the drying device 52. is taken out.

[Effects of the Invention] As explained above, the heat development transfer device according to the present invention ensures that when the image-exposed photothermographic material is superimposed on the image-receiving material and wound around the outer periphery of the drum, both materials are overlapped uniformly. It can also be wrapped around the outer periphery of the drum, which has the excellent effect of producing good images without uneven development and transfer.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an image recording apparatus to which a thermal development transfer device according to the present invention is applied, and FIG. 2 is a schematic sectional view showing a guide roller and overlapping rollers of the thermal development transfer device. DESCRIPTION OF SYMBOLS 10... Image recording device, 16... Photosensitive material, 28... Thermal development transfer part, 32... Image receiving material, 34... Heating drum, 36... Endless pressure contact belt, 50... Guide roller, 60...overlapping roller.

Claims (1)

[Claims] (1) A superimposing roller is provided for sandwiching a photothermographic material and an image receiving material arranged on the outer periphery of the drum and having an image exposed thereon between the drum, superimposing them and winding them around the outer periphery of the drum; A thermal development transfer device that thermally develops a photothermographic material by heating it while being wrapped around the outer circumference of the drum and transferring an image to an image-receiving material, wherein the material located on the drum side is wrapped around the overlapping roller. A thermal development transfer device characterized in that a material guide means is provided for moving the material along the outer periphery of the drum on the upstream side in the direction.