JPH0241017B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exposure table incorporated into a photographic processing machine. The exposure table installed in a conventional photo processing machine transports the print paper horizontally before and after exposure and holds the print paper horizontally during exposure, so the length of the exposure table in the horizontal direction is The drawback was that the installation area of the photoprocessing machine was increased due to the length of the photoprocessing machine. SUMMARY OF THE INVENTION An object of the present invention is to provide an exposure stand that can reduce the installation area of a photographic processing machine and reduce the size of the machine.

In order to achieve the above object, the exposure table of the present invention conveys the print paper vertically before and after exposure and holds the print paper vertically during exposure. A narrow guide path for guiding printed paper is formed between a vertical guide plate having a large number of ventilation holes, a suction fan placed behind the vertical guide plate, and the vertical guide plate. A double-opening opening/closing guide plate disposed in front of the vertical guide plate, and a double guide plate disposed in front of the vertical guide plate, and a double guide plate disposed in front of the vertical guide plate, and a double guide plate arranged so as to expose a part of the peripheral surface of the roller into the narrow guide passage, and to convey the print paper in cooperation with each other. The vertical guide plate and the opening/closing guide plate are provided with a driving roller and a driven roller provided respectively, and an opening/closing means for opening and closing the opening/closing guide plate in conjunction with the stopping and operation of the driving roller, and before and after exposure. When the opening/closing guide plate is closed, the print paper is conveyed by the driving roller and the driven roller while being suctioned by a suction fan as the case may be, and the opening/closing guide plate is opened for exposure. In this case, the drive roller is stopped and a suction fan is used to suction and hold the print paper against the vertical guide plate.

Embodiments of the exposure table of the present invention will be described in detail below with reference to the drawings. Reference numeral 1 denotes a vertical guide plate which is provided with a large number of ventilation holes 2 and which holds the print paper in a flat shape during exposure, and is supported by a container frame 3. 4 is a suction fan placed behind the vertical guide plate 1. Reference numerals 5 and 6 are double-sided opening/closing guide plates arranged in front of the vertical guide plate 1 in close proximity to the vertical guide plate 1, and the vertical shafts 7 and 8 attached to the respective bases are fixed to both sides of the vessel frame 3. It is rotatably supported by bearings 9 and 10. 11 is vertical guide plate 1
This is a narrow guide passage formed between the opening and closing guide plates 5 and 6, through which the print paper passes in the vertical direction. 12, . . . are rotating shafts arranged in several stages above and below along the back surface of the vertical guide plate 1. Each rotating shaft 12 is rotatably supported by the container frame 3, and protrudes outward from the container frame 3. A pulley 13 is provided at the end. Rotating shaft 12, ... is pulley 1
3, a timing belt 14, a drive pulley 15, a drive belt 16, and a drive motor (not shown). 17, 18 are drive rollers attached to the rotating shaft 12, . . .
Parts of the circumferential surfaces of the drive rollers 17 and 18 are exposed into the narrow guide passage 11 through openings 19 and 20 provided in the vertical guide plate 1.
It is designed to come into contact with both sides of the back side of the print paper passing through. 21 and 22 are drive rollers 1
These are driven rollers corresponding to numbers 7 and 18. 23,2
Bearings 4 support the driven rollers 21 and 22, and are attached to the surfaces of the opening/closing guide plates 5 and 6. Parts of the peripheral surfaces of the driven rollers 21 and 22 are exposed into the narrow guide passage 11 through openings 25 and 26 provided in the opening/closing guide plates 5 and 6. Narrow guide passage 11
Drive rollers 17, 18 and driven roller 2
1 and 22 cooperate to carry in the print paper. Rotating arms 27 and 28 attached to the lower ends of the vertical shafts 7 and 8 are the tumbuckles 2.
9 and 30 and connecting plates 31 and 32, the pins 33 and 34 are connected to eccentrically located pins 33 and 34 of the reciprocating rotary disk 35. The reciprocating rotating disk 35 is a gearbox 36
It is designed to be rotated back and forth by a reversible motor 37 via. The opening/closing guide plates 5, 6 are opened and closed by the aforementioned rotating arms 27, 28, tambuckles 29, 30, connecting plates 31, 32, pins 33, 34, reciprocating rotating disc 35, gearbox 36, and reversible motor 37. It constitutes an opening/closing means. The switch of the reversible motor 37 and the drive roller 1 are operated so that the opening/closing means opens and closes the opening/closing guide plates 5, 6 in conjunction with the stoppage and operation of the drive rollers 17, 18.
A switch for the drive motor (not shown) that operates the motors 7 and 18 is automatically switched.
Reference numerals 38 and 39 indicate locking pins protruding from the connecting plates 31 and 32, and a tension spring is installed between the locking pins 38 and 39 and the eccentrically positioned pins 33 and 34 protruding from the reciprocating rotating disk 35. 40 and 41 are stretched. The connecting plates 31 and 32 are provided with long holes 42 and 43 into which the pins 33 and 34 are loosely fitted.
This prevents shocks caused by misalignment of the stop position. When the opening/closing guide plates 5 and 6 are closed, the tension spring 4
0 and 41, the pressing force of the driven rollers 21 and 22 against the driving rollers 17 and 18 is kept constant.

Print paper is supplied to the exposure table made up of the above components from a print paper supply magazine that is detachably attached to the upper part of the exposure table.

Next, the operation of the exposure table of the present invention will be explained.

When a print paper supply magazine (not shown) is mounted on the exposure table and the suction fan 4 is started, the air in front of the vertical guide plate 1 for holding the print paper is drawn vertically through the many small holes 2 by the suction fan 4. It is attracted to the rear of the guide plate 1. At this time, before the print paper is exposed to light, the opening/closing guide plates 5 and 6 are closed as shown in FIG. 3, and the driven rollers 21 and 22 are pressed against the drive rollers 17 and 18.

Therefore, first, the print paper is pulled out from the print paper supply magazine, and the leading end is attached to the uppermost driving rollers 17, 18 and the driven rollers 21, 21.
Set it by sandwiching it between the drive rollers 1 and 1.
7 and 18 are driven, the print paper is carried into the narrow guide passage 11 by the cooperation of the drive rollers 17 and 18 and the driven rollers 21 and 22, and the print paper is printed by a predetermined length during exposure. When the paper is carried onto the vertical guide plate 1 holding the paper, the drive rollers 17 and 18 are stopped.

When the drive rollers 17 and 18 are stopped,
The reversible motor 37 rotates, and the reciprocating rotary disk 35 rotates clockwise in FIG.
Tambuckles 29, 30, rotating arms 27, 28
Then, the vertical shafts 7 and 8 are rotated clockwise and counterclockwise, respectively, and the opening/closing guide plates 5 and 6 are fully opened as shown in FIG. 2 after passing through the state shown in FIG. At this time, the print paper cut into a predetermined length is suctioned and held on the vertical guide plate 1 by the suction force of the suction fan 4. Exposure is performed in this state, and after exposure, the reversible motor 37 is reversed, and the reciprocating rotary disk 35 is rotated counterclockwise in FIG.
6 closes and returns to the state shown in FIG. Next, the reversible motor 37 stops, and a drive roller drive motor (not shown) rotates to drive the drive roller 17, via the drive pulley 15, timing belt 14, and pulley 13.
18 is driven, and by the cooperation of drive rollers 17, 18 and driven rollers 21, 22, the exposed print paper is carried out of the exposure table and carried into a processor (not shown). At the same time as the exposed print paper is carried out of the exposure table, it is carried into the narrow guide passage 11 of the subsequent print paper exposure table. Thereafter, the above action is repeated.

As can be easily understood from the above explanation,
In the present invention, the printing paper is held on the exposure table by the suction force of the suction fan without using a paper mask, so that it is possible to print a large number of print sizes without using a paper mask. It is also possible to carry the print paper into the narrow guide passage by the cooperation of the drive roller and the driven roller while being sucked onto the vertical guide plate by a suction fan, so that the print paper becomes flatter and easier to expose. Even when the opening/closing guide plate is opened, the print paper remains flat and is suctioned and held by the vertical guide plate, resulting in beautiful prints. Since the print paper is conveyed vertically, the horizontal length of the exposure table can be reduced, making it possible to reduce the installation area of photo processing machines and downsize the machines. .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway perspective view, Fig. 2 is a cross-sectional plan view showing the opening/closing guide plate in an open state, and Fig. 3 is a cross-sectional view showing the opening/closing guide plate. FIG. 3 is a cross-sectional plan view showing the closed state. 1: Vertical guide plate, 2: Ventilation hole, 4: Suction fan, 5, 6: Opening/closing guide plate, 11: Narrow guide passage, 17, 18: Drive roller, 21, 22: Followed roller, 27, 28: Rotating arm, 29,3
0: Tambuckle, 31, 32: Connecting plate, 33,
34: Pin, 35: Reciprocating rotating disc, 36: Gearbox, 37: Reversible motor.

Claims (1)

[Claims] 1. A narrow guide path for guiding printed paper is formed between a vertical guide plate having a large number of ventilation holes, a suction fan disposed behind the vertical guide plate, and the vertical guide plate. a double-sided opening/closing guide plate disposed in front of the vertical guide plate; and a vertical guide plate configured to expose a part of the circumferential surface of the roller into the narrow guide path and to convey the print paper in cooperation with the guide plate. a driving roller and a driven roller provided for each of the opening/closing guide plate and the stopping of the driving roller;
The apparatus is provided with an opening/closing means for opening and closing the opening/closing guide plate in conjunction with the operation, and when the opening/closing guide plate is closed before or after exposure, the print paper is conveyed by a driving roller and a driven roller. An exposure table characterized in that when the opening/closing guide plate is open for exposure, the drive roller is stopped and the print paper is suctioned and held on the vertical guide plate by a suction fan.