JPS6324260A - Picture recorder - Google Patents

Abstract

PURPOSE:To prevent solvent from being lifted from the end faces of an application roller by forming annular recessed parts between the periphery and axis of the roller on both the end faces of the roller. CONSTITUTION:The conically recessed parts 80 whose axial dimension is shortened in the direction of a rotary shaft 54 are formed on both the end faces of the application roller 52. Since the recessed parts 80 are formed on both the end faces of the roller 52, water 70 lifted to a bead part 70A arrived at the end faces at the time of rotation of the roller 52 is guided to the bottom parts 80A of the recessed parts 80 by its dead weight before contact with a photosensitive material 16 and dropped into a tank 72. Consequently, the water 70 is not lifted up to the back of the material 16, so that thick application of water to the material 16 near the corner part 80B of the roller 52 can be suppressed.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to an image recording method for obtaining an image on an image-receiving material by transferring an image recorded on a heat-developable photosensitive material to the image-receiving material in the presence of an image-forming solvent. It relates to a recording device.

[Prior Art and Problems to be Solved by the Invention] As an image recording device for obtaining a color image using a heat-developable photosensitive material, an image is exposed to the heat-developable photosensitive material as shown in JP-A-59-75247. After that, it is sent to the heat development department, and after heat development, the photosensitive material is covered with receiver paper? It is known that an image is transferred to image-receiving paper through a transfer process.

Before being sent to the transfer section, this image-receiving paper is applied with a transfer aid (image-forming solvent) such as water in order to improve transfer efficiency.

For this reason, in the apparatus shown in Japanese Patent Application Laid-open No. 59-75247, water is applied by drawing water from a liquid tank with a roller. When water is applied using a coating roller in this way, excess water is generated at the contact area between the receiving paper and the roller end due to water lifting up from the roller end.
This will result in uneven coating.

The present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to provide an image recording apparatus that can prevent the solvent from lifting up from the end face of the application roller.

[Means and effects for solving the problems] The image recording apparatus according to the present invention transfers an image recorded on a heat-developable photosensitive material to the image-receiving material in the presence of an image-forming solvent. The image recording apparatus includes a tank for accumulating the solvent, and a part of the tank is immersed in the solvent and rotates in accordance with the movement of the photothermographic material or the image-receiving material to heat the image forming solvent. It has a coating roller for coating the developing photosensitive material 1 or the image receiving material.

The coating roller is characterized in that a ring-shaped recess is formed on both end faces of the coating roller at an intermediate portion between the outer periphery and the axis.

Therefore, the concave portion formed on the end face of the coating roller 4j can prevent the solvent from lifting up from the end face of the roller in the tank, thereby enabling uniform application.

Note that the closer the recess is provided to the outer periphery of the end face of the application roller, the greater the effect of preventing the solvent from lifting up. Preferably, the tapered surface starts from the outer periphery of the application roller and extends to the shaft.

The image recording apparatus of the present invention includes a heat development section that heat-develops the exposed heat-developable photosensitive material, and a transfer section that heats the heat-developed photosensitive material and image-receiving material by overlapping them and transferring the image to the image-receiving material. The department may be provided separately,
In addition, there is a heat development/transfer section in which the heat development section and the transfer section are provided at the same location, that is, the heat development/transfer section that overlaps and heats the exposed photothermographic material and the image receiving material to perform heat development and thermal transfer at the same time. It may be provided.

Further, in the image recording apparatus of the present invention, for example, US Pat. No. 4,430,415, US Pat.
OO626, 4503137, JP-A-59-
154445, JP 59-165054, JP 59-180518, JP 59-218443,
Japanese Patent Publication No. 120356/1983, Patent Application No. 20956/1983
No. 3, 0 application Y (No. 60-79709, patent application 1986-16)
9585, Japanese Patent Application No. 60-244873, and the like can be used.

In the present invention, an image-forming solvent is a solvent required for image formation, such as water, a low-boiling organic solvent (
(alcohols, ketones, amides, etc.) or those obtained by adding various additives such as surfactants, development accelerators, and development stoppers to these solvents.

[Example] The image recording apparatus of the present invention will be described below, taking as an example a case where thermal development and thermal transfer are performed simultaneously.

FIG. 2 shows an image recording apparatus IO according to this embodiment.

In this image recording apparatus 10, a magazine 14 is mounted on a machine stand 12 and stores a photothermographic material 16. The photosensitive material 16 in the magazine 14 is pulled out from its outer periphery, cut into a predetermined length by the cutter 18, and then wound around the outer periphery of the exposure drum 20 (in the direction of arrow A in FIG. 2). The exposure drum 20 is rotated in reverse after exposure, and the photosensitive material 16 is peeled off by a scraper 24 and sent to a development transfer section 28 via a water application section 34.

On the other hand, the image receiving paper 32 accommodated in the tray 30 is transferred to the development transfer section 2.
After being sent to the photosensitive material 8 and superimposed on the photosensitive material 16, it is heated by a heater in the development and transfer section 28. As a result, the photosensitive material 16 is developed, and the developed image is transferred to the receiver paper 3.
Transferred to 2.

After the transfer is completed, the photosensitive material 16 is stored in a waste tray 38 via the 'Am section 36, and the image receiving paper 32 is sent out via the dry storage section 40 to a take-out tray 42.

As shown in FIG. 1, a pair of conveyance rollers 44, 46 that sandwich the photosensitive material 16 being conveyed are arranged in the water application section 34, and a pair of conveyance rollers 44, 46 are arranged downstream of these conveyance rollers 44, 46. 48 and 50 are arranged to sandwich and convey the photosensitive material 16.

These rollers are configured to send out the photosensitive material 16 in the direction of arrow B to the thermal development/transfer section 28 by receiving the driving force of a motor (not shown). Furthermore, guide plates 51A and 51B are provided between these conveyance rollers, corresponding to both ends of the photosensitive material 16 being conveyed, and guide the photosensitive material 16 from between the conveyance rollers 44 and 46 to between the conveyance rollers 48 and 50. It is designed to guide you.

A coating roller 52 as a coating member corresponds thereto. The application roller 52 has its rotating shaft 54 supported by the machine base 12 .

A portion of the coating roller 52 is immersed in a tank 72 filled with ice 70, which is an image forming solvent, and when the coating roller 52 rotates, 7° of water is brought out on the same surface and transferred to the back surface of the photosensitive material 16. It can be applied with. The application roller 52 is rotated in the direction of arrow C by an auxiliary means such as a motor while the photosensitive material 16 is being advanced, and the water 70 is brought out on its outer peripheral surface to form a heavy back portion 70A of the photosensitive material 16.

A supply vibrator 74 for supplying the water 70 and a discharge pipe 76 for discharging the water 70 from the tank 72 are attached to the tank 72 filled with water 70 and connected to a pump (not shown). Therefore, by driving this pump, the water in the tank 72 can be circulated or exchanged as needed.

A vibrator 78 is attached. The opening 78A of this overflow vibe 78 is arranged at a predetermined height from the bottom surface 72A of the tank 72, and when the water 70 supplied from the supply pipe 74 reaches above this opening 78A, the water 70 is discharged to the outside of the tank 72, and the tank 72
The amount of water inside (water surface height) can be kept constant. Note that this water surface is approximately 1/1/2 of the coating roller 52.
It is preferable that the height of the immersion is about 3.

As shown in FIG. 3, on both end faces of the application roller 52, a concave portion 80 is formed in the shape of a concave portion, the shaft dimension of which is shortened over the rotating shaft 54. As shown in FIG. The rotating shaft 54 of the application roller 52 is configured to protrude from the bottom 80A of the recessed portion 80.

This concave portion 80 allows the end face of the coating roller to
The included angle formed by 6 (angle C in Figure 3) is an obtuse angle,
The water 70 lifted from the surface of the recess 80 by the rotation of the application roller 52 is guided to the bottom 80A of the recess 80, and then to the corner 80B between the widthwise end of the application roller 52 and the back surface of the photosensitive material 16. This prevents excess water from lifting up.

The operation of this embodiment will be explained below.

The photosensitive material 16 housed in the cassette 14 is placed on the exposure drum 2.
After being exposed by the 'A optical head 22, it is sent to the water coating section 34.

The application roller 52 attaches the water 7o in the tank 72 to its surface and takes it out, forms a bead 70A between it and the back surface of the photosensitive material 16, and this is applied to the back surface of the photosensitive material 16.

Here, since concave portions 80 are formed on both end surfaces of the application roller 52, the water 70 lifted up to the bead portion 70A reaching this end surface when the application roller 52 rotates comes into contact with the photosensitive material 16. Since it is guided to the bottom 80A by its own weight and falls into the tank 72, it does not lift up to the back surface of the photosensitive material 16, and thick coating on the photosensitive material 16 near the corner 80B of the coating roller 52 can be prevented.

Further, when the coating roller 52 and the photosensitive material 16 are in close contact with each other, the water that protrudes to both ends of the coating roller 52 is also absorbed by the photosensitive material 16.
Since the included angle (angle C in FIG. 3) between the coating roller 16 and the end of the coating roller 4j is an obtuse angle, the effect of surface tension is small and the water 7o is guided to the bottom surface 80A of the recessed portion 8o.

As a result, coating water with a uniform thickness is formed on the back surface of the photosensitive material 16 without liquid stagnation.

The photosensitive material 16 subjected to water cooling rH3 in the water coating section 34 is sent to the thermal transfer/developing section 28. The thermal development image-receiving paper 32 taken out from the tray 30 is sent to the thermal transfer/developing section 28 and overlapped with the photosensitive material 16. Here, when heat development is performed in the presence of water, the dye image formed at [1v] is thermally transferred to the emulsion surface of the image receiving paper 32. In this transfer state, the necessary amount of water has already been appropriately applied to the photosensitive material 16, so that an extremely good transfer operation can be performed.

Photosensitive material 16 and image receiving paper 3 remain in close contact after transfer
2 is sent from the thermal development/transfer section 28 to the peeling section 36, the photosensitive material 16 is stored in the stacking device 38, and the image receiving paper 32 is sent to the take-out section 4o and taken out.

Since no excess water is applied to the image-receiving paper 32, the guide rollers that feed the image-receiving paper 32 and the photothermographic material 16 to the take-out section 40 or the accumulation section 38 are not stained by excess moisture.

In addition, - in the above embodiment, the concave portions 80 in the form of pins were formed at both ends of the applicator roller 52, but as shown in FIG. A recessed portion may be formed by leaving the remaining portion.

Further, in the above embodiments, the present invention has been described with reference to the case where the photosensitive material 16 is coated with water, but the present invention is similarly applicable to the case where the image receiving paper 32 is coated with water.

[Effects of the Invention] As explained above, the image recording apparatus according to the present invention is capable of producing an image on an image-receiving material by transferring an image recorded on a photothermographic material to the image-receiving material in the presence of an image-forming solvent. In the recording device, there is provided a tank for accumulating the solvent, and a portion of the tank is immersed in the solvent and rotates in accordance with the movement of the photothermographic material or the image receiving material to transfer the image forming solvent to the photothermographic material. Or coating 7 applied to the image receiving material.
The applicator roller has an annular recess formed between the outer periphery and the shaft center on both end faces of the applicator roller. It has an excellent effect of preventing.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a water application section according to an embodiment of the present invention at the time of coating start, FIG. 2 is a cross-sectional view showing an image recording apparatus to which this water cooling cloth section is applied, and FIG. 3 is a cross-sectional view of an application roller. 4 is a cross-sectional view showing another embodiment of the recessed portion formed in the application roller. 1O: Image recording device, 16: Photosensitive material, 32: Receiving paper, 34: Water application section. 52-φ fist application roller, 7001 water, 72#...tank, 80/fist/recessed part.

Claims (3)

[Claims] (1) In an image recording apparatus that obtains an image on an image-receiving material by transferring an image recorded on a heat-developable photosensitive material to the image-receiving material in the presence of an image-forming solvent, there is provided a tank for accumulating the solvent; a coating roller, a part of which is immersed in a solvent and rotates in accordance with the movement of the photothermographic material or the image-receiving material to apply the image-forming solvent to the photothermographic material or the image-receiving material; An image recording device characterized in that the roller has a ring-shaped concave portion formed at an intermediate portion between the outer periphery and the axis on both end surfaces of the roller. (2) The image according to claim 1, wherein the recessed portion has a tapered surface that starts from the outer circumference of the application roller and forms an acute angle with respect to the outer circumference of the application roller. Recording device. (3) The image recording apparatus according to claim (2), wherein the tapered surface of the concave portion extends up to the axis of the application roller.