JPH02173638A - Heat developing and transferring device - Google Patents

Abstract

PURPOSE:To obviate the unequal transfer by defective superposing by providing a guide means for guiding a heat developable photosensitive material and image receiving material which are superposed on each other in the superposed state to the spacing between a drum and a belt. CONSTITUTION:A heat developable photosensitive material 16 which is exposed with images and is coated with water is superposed on the image receiving material 32 by a superposing roller 60. The superposed photosensitive material 16 and material 32 are then guided in the superposed state by a guide plate 50 as the guide means to the outer periphery of the heating drum 34 and is supplied to the spacing between the drum 34 and the endless press contact belt 36. The photosensitive material 16 and the material 32 which are held in tight contact with each other are crimped and transported in this state by the drum 34 heated by a halogen lamp and the belt 36 and the images recorded on the photosensitive material 16 are transferred onto the material 32.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a heat development transfer device, in particular, a heat development transfer device in which a heat development photosensitive material on which an image has been exposed is superimposed on an image receiving material and heated while being wrapped around the outer circumference 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.

Each 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 photothermographic material is thermally developed, and the photothermographic material is The image exposed on the material is adapted to be transferred to an image-receiving material.

[Problem to be solved by the invention] By the way, the outer periphery of the heating drum (between the endless pressure belt)
When winding the heat-developable photosensitive material and the image-receiving material, as mentioned above, the two materials are superimposed and supplied by the superimposing roller, so the two materials are once securely superimposed by the superimposing roller. Ru. However, after passing through the overlapping rollers and before being held by the endless pressure belt, each material does not curve around the outer periphery of the heating drum due to its own rigidity and is overlapped. Defects may occur.

This tendency was particularly noticeable at the leading edge or trailing edge of the photothermographic material and the image-receiving material.

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 consideration, and when the photothermographic material on which the image has been exposed is overlapped with the image-receiving material and wound around the outer periphery of the drum, it is possible to ensure that the photothermographic material is wrapped around the outer periphery of the drum while being overlapped. The purpose of this is to obtain a thermal development transfer device that can obtain good images without causing development transfer unevenness.

[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 superimposing roller that supplies the photothermographic material and the image receiving material to the outer circumference of the drum, and a pressure contact means that wraps and presses the supplied photothermographic material and image receiving material around the outer circumference of the drum, and heats the supplied photothermographic material and image receiving material in the wound state to thermally develop the material. A heat development transfer device that thermally develops a photosensitive material and transfers an image to an image-receiving material, the heat-developable photosensitive material and the image-receiving material being overlapped by the overlapping roller between the overlapping roller and the pressure contact means. A guide means is provided for guiding the parts in the combined state to the pressure contact means.

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 being overlaid on the image-receiving material. moreover,
The superimposed photothermographic material and image receiving material are guided along the outer periphery of the drum by the guide means, fed together between the drum and the pressure contact means, and 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.

In this case, both materials are reliably overlapped by the overlapping roller, and furthermore, even after passing through the overlapping roller, they are guided by the guide means in an overlapping state and supplied to the pressure contact means, so that the overlapping This prevents the materials from being overlaid incorrectly during the time they pass through the rollers and are held by the pressure contact means.

Therefore, when each material is superimposed and supplied to the outer periphery of the heating drum and then heated, a thermal phenomenon occurs and an image is transferred, a good image can be obtained without uneven development and transfer.

[Example] 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 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 indicated by the arrow.

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 (
direction of arrow B), the scraper 24 rotates the rotating drum 20.
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.

In the thermal development transfer section 28, a heating drum 34 and an endless pressure belt 36 serving as pressure contact means are arranged. 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 20 mm, and its endless outer side is pressed against the outer periphery of the heating drum 34.

The heat-developable photosensitive material 16 coated with water is transferred to a heating drum 34
The heating drum 34 is supplied between the
It is designed to be sandwiched and conveyed over approximately 2/3 of the circumference and thermally developed.

The 1i-pressure i-belt 36 is wrapped around the tension roller 37 near the part where the overlapping roller 60 is wrapped around the heating drum 34.
It is placed in contact with the outer periphery of the This overlapping roller 60 is a rubber roller with an outer diameter of 25 mm.

On the other hand, a tray 30 disposed below the thermal development transfer section 28
Inside is a predetermined length (for example, for A4 size, the total length is 21 Q
A plurality of image-receiving materials 32 cut into pieces (420 mm in total length for A3 size) are accommodated. This image receiving material 32 is fed to a supply roller 3 disposed on the side of the tray 30.
8, the sheets are taken out one by one.

The image-receiving material 32 taken out is transferred to the heat-developable photosensitive material 16 by a superimposing roller 60 disposed in the heat-developable transfer section 28.
The heating drum 34 and the endless pressure belt 36 are overlapped with each other.
It is designed to be supplied between.

As shown in detail in FIG. 2, a guide plate 5 serving as a guide means is provided between the overlapping roller 60 and the endless pressure belt 36.
0 is placed. The guide plate 50 is connected to the heating drum 3 by a stay 51 between the overlapping roller 60 and the part where the endless pressure belt 36 is wound around the tension roller 37.
It is held opposite the outer periphery of 4. In this case, the guide plate 50 is formed to have a width dimension of 12 mm along the conveying direction of the superimposed photothermographic material and image receiving material, and is arranged so that the opposing gap with the heating drum 34 is 400 μ. has been done.

The heat-developable photosensitive material 16 and the image receiving material 32 overlapped by the overlapping roller 60 are guided by the guide plate 50 along the outer periphery of the heating drum 34 in the overlapping state, and are then connected to the heating drum 34 and the endless pressure belt 36. It is designed to be supplied between.

The heat-developable photosensitive material 16 is heated in a heat development transfer section 28 while superimposed on the image-receiving material 32 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 set to be sent out.

Next, the operation of this embodiment will be explained.

When the photothermographic material 16 drawn out from the magazine 14 is cut by the cutter 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 by a water coating section 26, and sent to a thermal development transfer section 28.

On the other hand, the image receiving material 32 in the tray 30 is taken out one by one by the supply roller 38, and further, the image receiving material 32 is taken out one by one by the supply roller 38, and
The photothermographic material 16 is overlapped and brought into close contact with the heat-developable photosensitive material 16 by an overlapping roller 60 disposed at .

The heat-developable photosensitive material 16 and the image-receiving material 32 overlapped by the overlapping roller 60 are guided by the guide plate 50 along the outer periphery of the heating drum 34 in the overlapping state, and the heating drum 34 is guided along the outer periphery of the heating drum 34 and the endless pressure bonding belt 36 ( The winding around the tension roller 37 is supplied between the parts).

The heat-developable photosensitive material 16 and the 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 case, both materials are reliably overlapped by the overlapping roller 60, and furthermore, even after passing through the overlapping roller 6G, they are guided by the guide plate 50 in an overlapping state, and are connected to the heating drum 34 and the endless pressure bonding belt. 36, the overlapping roller 60
There will be no occurrence of misalignment of the materials until they are passed through and held by the endless crimping belt 36.

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 the image-exposed photothermographic material remains overlapped when it is superimposed on the image receiving TTP and wound around the outer periphery of the drum. It can be wrapped around the outer periphery of the drum, and has the excellent effect of producing good images without uneven development and transfer.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing 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 plate and overlapping rollers of the thermal development transfer device. IO... Image recording device, 16... Photosensitive material, 28... Thermal development transfer section, 32... Image receiving material, 34... Heating drum, 36... Endless pressure belt, 50... Guide plate, 60...overlapping roller. Figure 1

Claims (1)

[Claims] (1) A superimposing roller that sandwiches a photothermographic material and an image-receiving material arranged on the outer periphery of the drum to which an image has been exposed and superimposes them on the drum and supplies them to the outer periphery of the drum, and the supplied heat Thermal development includes a pressure contact means for wrapping a photothermographic material and an image-receiving material around the outer periphery of a drum and pressing them against each other, and heats the photothermographic material in the wound state to thermally develop the photothermographic material and transfer an image to the image-receiving material. The transfer device is provided with a guide means between the overlapping roller and the pressing means for guiding the photothermographic material and the image receiving material, which are overlapped by the overlapping roller, to the pressing means in an overlapping state. A thermal development transfer device characterized by the following.