JPS61196243A - Scanning type exposing and developing device - Google Patents

Abstract

PURPOSE:To expose and develop a heat development photosensitive material almost at the same time by providing an exposure head and a heating head opposite to the periphery of a rotary drum which is wound with a heat develop ment photosensitive material, and moving the exposure head and heating head in axial direction of the rotary drum corresponding to the rotation of the rotary drum. CONSTITUTION:When a motor 28 is rotated clockwise, a belt large wheel 32 also rotates clockwise and a scanning head 22 is moved through a wire 50 as shown by an arrow B. The rotary drum 21 rotates a synchronism with the rotation of the motor 28. An original is read by an original scanner reader 58 and a red exposure part 54R, a green exposure part 54G, and a blue exposure part 54B emit light beams of red, green, and blue to the development photosensitive materials wound around the rotary drum 21 during the movement of the scanning head 22. Consequently, the photosensitive material is exposed to an image of the original over the scan. Further, a laser oscillator 62 heats and develops the heat development photosensitive material during the movement of the scanning head 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a scanning type exposure and development apparatus that performs exposure and development while scanning a photothermographic material wound around a rotating drum.

[Prior Art] Conventionally, in an image recording device using a heat-developable photosensitive material, 'NN
After exposure is performed in the county section, the exposed photosensitive material is transported to a thermal development section and developed, and the exposure and development are performed in separate devices. Therefore, there are disadvantages in that the total processing time for exposure and development becomes long and the apparatus becomes large.

[Problems to be Solved by the Invention] An object of the present invention is to shorten the total processing time for exposure and development, and to obtain a compact scanning exposure and development apparatus.

[Means for Solving the Problems] A scanning exposure and development apparatus according to the present invention includes a rotating drum around which a photothermographic material is wound and whose axis of rotation is a rotation axis, and a rotating drum disposed opposite to the circumferential surface of the rotating drum. An exposure head is provided and moves in the axial direction of the rotating drum in response to the rotation of the rotating drum, and an exposure head is provided facing the circumferential surface of the rotating drum and moves in the axial direction of the rotating drum in response to the rotation of the rotating drum. and a heating head.

[Operation] The photothermographic material is wound around the rotating drum, the drum is rotated once, and the exposure head and heating head are moved in the axial direction of the rotating drum. The photothermographic material is exposed by emitting light whose intensity varies from the exposure head to the photothermographic material, and heat from the heating head is applied to the photothermographic material to thermally develop the photothermographic material.

Therefore, development can be carried out while exposure is being carried out, and the total processing time for exposure and development can be shortened.

[Example] An example of a scanning type exposure and development apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 shows a plan view of the mechanical structure and a block diagram of the electrical structure of the photothermographic material IO. base 12
The leg plate 1 is attached via the bracket 14 and the bracket 16.
8 and 20. Both ends of a rotating drum 21 are pivotally supported by the zero leg plates 18 and 20, which are respectively erected in parallel. A scanning head 22 is disposed opposite the circumferential surface of the rotating drum 21. That is, one end of the scanning head 22 is pivotally supported by a guide bar 24 that is horizontally suspended between the leg plates 18 and 20. The other end of the scanning head 22 is connected to the leg plate 1.
It is placed on a guide bar 26 that is horizontally suspended between 8 and 20.

On the other hand, a motor 28 is disposed on the base 12 outside the leg plate 18. A small belt wheel 30 is attached to the rotating shaft of the motor 28.
is fixed. Further, a large belt arm 32 is pivotally supported on the base 12 via a bottle (not shown). A belt 34 is wound around the belt small wheel 30 and the belt large army 32. A pulley 36 is fixed to the large belt group 32 coaxially with the large belt group 32.

A tensioner 38 is provided on the outer surface of the leg plate 20. The tensioner 38 has an arm 40 whose intermediate portion is pivotally supported by a bracket 42 erected on the one leg plate 20. A tension coil spring 44 is secured to one end of the arm 40, and the other end of the tension coil spring 44 is connected to the leg plate 2.
It is locked at 0. A pulley 4 is attached to the other end of the arm 40.
6 is pivoted.

A fixture 48 is secured to one side end surface of the scanning head 22, and a fixture 52 is secured to the other side end surface of the scanning head 22. One end of a wire 50 is locked to the fixture 48 . The wire 50 is wrapped around the pulley 36 and folded back, then wrapped around the pulley 46 and folded back, and the other end of the wire 50 is locked to a fixture 52.

The scanning head 22 includes an exposure head 54 and a laser heating head 5.
6 are connected by a cover 57.

As shown in FIG. 3, the exposure head 54 and the laser heating head 56 have the same shape. The surface of the exposure head 54 facing the rotating drum 21 has an arc shape, and when the tip of the exposure head 54 is placed on the guide bar 26,
The center of this arc coincides with the axis of the rotating drum 21. A red exposure section 54R1, a green exposure section 54G, and a blue exposure section 54B are embedded in the exposure head 54 toward the circumferential surface of the rotating drum 21. These exposure parts are LED
and a focusing lens. on the other hand.

The tip of an optical fiber 64 is embedded in the laser heating head 56, and a focusing lens (not shown) is connected to the rotating drum 21.
It is placed opposite the horse's face.

The rotation of the motor 28 and the motor (not shown) for the rotary drum 21 is controlled by a control circuit 60. Also, a signal from the document scanning/reading device 58 is input to the control circuit 60, and this signal is input to the control circuit 60. Based on red exposure part 5
Exposure signals are output to the 4R1 green exposure section 54G and the blue exposure section 54B. A heating signal is output from the control circuit 60 to the laser oscillator 62, and the laser oscillator 6
2 emits laser light toward the circumferential surface of the rotating drum 21 via an optical fiber 64 and a focusing lens (not shown). The laser oscillator 62 may be either a solid state laser oscillator or a gas laser oscillator.

Next, the operation of this embodiment configured as described above will be explained.

Rotating motor 28 in a clockwise direction causes belt armour 32 to also rotate in a clockwise direction, moving scanning head 22 via wire 50 in the direction of arrow B in FIG. wire 50
is tensioned by a tensioner 38. Rotating drum 2
1 rotates in synchronization with the rotation of the motor 28. A document (not shown) is scanned and read by the document scanning/reading device 58, and while the scanning head 22 is moving, the red exposure section 54R1
Red, green, and blue lights are emitted from the green exposure section 54G and the blue exposure section 54B, respectively, to the photothermographic material wound around the rotating drum 21. As a result, the image of the document is exposed to the photothermographic material while being scanned. Further, while the scanning head 22 is moving, a heating signal is output from the control circuit 60 to the laser oscillator 62, and the laser oscillator 62 is wound around the rotating drum 21 via an optical fiber 64 and a focusing lens (not shown) in the laser heating head 56. A laser beam is radiated onto the attached photothermographic material, and the photothermographic material is heated and developed while being scanned.

Therefore, exposure and development can be performed almost simultaneously using the same device, and the total processing time for exposure and development can be shortened.

Note that the exposure head 54 and the laser heating head 56 may be formed integrally. The heating head may be one that emits infrared rays or a thermal head. Furthermore, the exposure head 54 and the laser heating head 56 may be formed integrally. They may be moved separately in the direction B in FIG. 1, and their respective moving speeds may be different.

Furthermore, the signal input to the control circuit 60 is not limited to the signal from the document scanning/reading device 58, but may be a signal from any device as long as it is a three-color video signal.

[Effects of the Invention] In the scanning exposure and development apparatus according to the present invention, an exposure head and a heating head are provided opposite to the circumferential surface of the rotating drum around which the photothermographic material is wound, and the exposure head and the heating head are provided to face the circumferential surface of the rotating drum around which the photothermographic material is wound. Since the exposure head and the heating head are moved in the axial direction of the rotating drum, the exposure and development of the photothermographic material can be performed almost simultaneously, and the total processing time for exposure and development can be shortened. Furthermore, since the exposure device and the development device are integrated, the device can be made smaller. Furthermore, since the heat-developable photosensitive material is heated and developed without being scanned by the heating head, the front surface of the heat-developable photosensitive material can be heated uniformly, making it possible to perform development evenly. have an effect.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing an embodiment of a scanning exposure and development apparatus according to the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 shows the mounting state of the exposure head and heating head. FIG. 2111... Rotating drum, 22... Scanning head, 54... Fist/exposure head, 56... Laser heating head, 62... Laser oscillator, 64... Optical fiber.

Claims (1)

[Claims] A rotating drum around which a photothermographic material is wound and whose axis is the rotational axis; an exposure head that is disposed facing the circumferential surface of the rotating drum and moves in the axial direction of the rotating drum in response to the rotation of the rotating drum; 1. A scanning exposure and development device comprising: a heating head disposed facing the circumferential surface of the rotating drum and moving in the axial direction of the rotating drum in response to rotation of the rotating drum.