JP3185466B2 - Photo printing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic printing apparatus for exposing a photosensitive material on an exposure stage.

[0002]

2. Description of the Related Art In a conventional photographic printing apparatus, as shown in FIG. 4, a transfer roller 4B is disposed closer to a transfer direction of a photosensitive material S than an exposure stage 4A. Is pressed to perform frame advance, and the photosensitive material S is exposed by the exposure means 4C.

[0003]

However, when the photosensitive material S is exposed by such a conventional photographic printing apparatus, the photosensitive material S must pass through the exposure stage 4A and reach the transfer roller 4B. Exposure of the photosensitive material S cannot be started. Therefore, as shown in FIG. 4, the photosensitive material S1 in the range from the front end of the photosensitive material S to a position immediately before the first screen to be exposed is processed without being exposed. And the photosensitive material is wasted.

[0004] The present invention has been made in view of the above points, and an object of the present invention is to provide a photographic printing apparatus capable of starting exposure from the front end of a photosensitive material.

[0005]

According to the photographic printing apparatus of the present invention, a roll-shaped photosensitive material is drawn out of a magazine by a drawing-out means, transferred to an exposure stage without cutting, exposed, and exposed. In the photographic printing apparatus for transferring the photosensitive material to the development processing section, the drawing means is constituted by a drawing roller equipped with a one-way clutch for free rotation in the drawing direction of the photosensitive material, and is opposed to the stage surface of the exposure stage. A suction unit for sucking the photosensitive material transferred to the exposure stage by the suction unit and transporting the photosensitive material frame-by-frame. When transferring the photosensitive material, the transfer speed of the photosensitive material should be greater than the transfer speed of the suction transfer device than the pull-out speed of the pull-out roller. Is set so that, when the photosensitive material is conveyed by suction transfer means, is characterized in that it is set so as not to receive the crimp resistance of the drawer roller by the action of the one-way clutch.

[0006]

According to the photographic printing apparatus of the present invention, first, the roll-shaped photosensitive material is pulled out of the magazine by the drawing-out means and transferred to the exposure stage without cutting. When the front end of the photosensitive material reaches the exposure stage, the front end of the photosensitive material is previously attached to the suction section of the suction transfer means, and the frame transfer of the photosensitive material by the suction transfer means is started. At this time, the transfer speed of the photosensitive material in the transfer of the photosensitive material by the cooperation of the suction transfer means and the drawing roller is set so that the transfer speed of the suction transfer means is higher than the drawing speed of the drawing roller, and the photosensitive material is sucked. When transported by the transporting means, the pull-out roller is set so as not to receive the pressure resistance of the pull-out roller by the action of the one-way clutch mounted for freely rotating the pull-out roller in the pull-out direction of the photosensitive material. Transfers smoothly. On the other hand, the photosensitive material stopped at the exposure position of the exposure stage is sequentially exposed.

That is, the first exposure of the first screen is performed by positioning one screen from the leading end of the photosensitive material at an appropriate exposure position on the exposure stage by the suction transfer means.
Next, exposure of the second screen is performed by feeding the photosensitive material frame-by-frame by the suction transfer means and positioning the photosensitive material at an appropriate exposure position on the exposure stage. After that, the photosensitive material is similarly advanced by frame,
Perform exposure work.

On the other hand, the exposed photosensitive material leaves the exposure stage and is transported toward a developing section to be subjected to a developing process.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a photographic printing apparatus A includes a magazine 1, a draw-out roller (draw-out means) 2, a suction transfer means 3 having a suction section 3A, and an exposure means 4 having an exposure stage 4A. , A paper mask 5 and a transfer roller 6, and the exposed photosensitive material S is sent to a development processing section B and developed.

The magazine 1 contains a photosensitive material S wound in a roll shape. The photosensitive material S is drawn out by a draw-out roller 2 and sent to an exposure stage 4A.

The suction transfer means 3 includes a suction chamber 31 and a suction belt 32, and is configured to transfer the photosensitive material S by suction to the suction belt 32 as shown in FIG. A large number of small holes 32a are formed in the entire surface of the suction belt 32, and the suction belt 32 is wound around the driving and driven rollers 33, 34, and 35 in a triangular shape.

An air suction port 31a is provided below the suction chamber 31 and an air discharge port 31b is provided above the suction chamber 31. The suction chamber 31 is rotated by a motor (not shown). Suction fan 3
1A is built in. The air suction port 31a of the suction chamber 31 is in contact with the inside of the horizontal side portion 32c of the suction belt 32. By rotating the suction fan 31A, air is suctioned from the small holes 32a of the horizontal side portion 32c of the suction belt 32. Is what is done. That is, the suction belt 3
The outer side surface portion of the second horizontal side portion 32c is configured as a suction portion 3A.

The driving roller 33 rotates in conjunction with a motor 36, and the rotation of the driving roller 33 also rotates the suction belt 32 to transfer the photosensitive material S.
Then, the suction belt 32 is moved from the horizontal side portion 32c to the oblique side portion 3c.
2b, the small hole 32a of the suction belt 32 is separated from the air suction port 31a of the suction chamber 31,
The photosensitive material S is released from a.

A motor 36 for rotating the driving roller 33 rotates the suction belt 32 so that the photosensitive material S is fed by the frame under the control of the controller 37.

The adsorption transfer means 3 constructed as described above
Is disposed on the transfer path of the photosensitive material S such that the suction section 3A faces the stage surface of the exposure stage 4A.

The exposure means 4 comprises a light source 41, a lens 42, and an exposure stage 4A. Exposure light from the light source 41 passes through the negative film F, and is transferred onto a photosensitive material A stationary on the exposure stage 4A. It is configured to print an image.

The exposure means 4 is provided with an exposure stage 4A each time the frame transfer of the photosensitive material S by the suction transfer means 3 is stopped.
The control section 37 controls the exposure of the upper photosensitive material S.

The transfer roller 6 is disposed between the exposure stage 4A and the developing section B,
The photosensitive material S sent from the printer is pressed and transported to the development processing section B. The control section 37 controls the photosensitive material S to feed the frame.

When the leading end of the exposed photosensitive material S transferred by the suction transfer means 3 reaches the transfer roller 6,
The suction fan 31A of the suction transfer means 3 is controlled by the control unit 37.
Stops, the photosensitive material S is released from the suction section 3A, and the transfer of the photosensitive material S by the transfer roller 6 is started.

In FIG. 1, reference numeral 7 denotes a loop forming stage for bending the exposed photosensitive material S to form a loop, and includes a transfer roller 6 and a developing section B.
It is arranged between and.

The suction transfer means 3 and the draw-out roller 2
Is set so that the transfer speed of the photosensitive material S in the transfer of the photosensitive material S in association with the transfer speed by the suction transfer means 3 is higher than the drawing speed by the drawing roller 2.

The draw roller 2 includes a draw roller 2
A one-way clutch (not shown) for freely rotating the photosensitive material S in the direction in which the photosensitive material S is pulled out is mounted. Therefore, when the photosensitive material S is transferred by the suction transfer means 3, the pressure resistance of the drawing roller 2 is received. Without
The drawing out of the photosensitive material S from the magazine 1 is also performed by the suction transfer means 3.

The photographic printing apparatus A constructed as described above can operate as follows to expose the photosensitive material S without waste. (1) First, the roll-shaped photosensitive material S is pulled out of the magazine 1 by the pull-out roller 2, and is transported to the exposure stage 4A without being cut in the middle.

(2) Next, when the front end of the photosensitive material S reaches the exposure stage 4A, the front end of the photosensitive material S is sucked by the suction section 3A of the suction transfer means 3.

(3) Next, the leading end of the photosensitive material S is stopped at the proper exposure position of the exposure stage 4A by the suction belt 32 of the suction transfer means 3.

(4) Next, the photosensitive material S is masked by a paper mask 5 except for the exposure screen, and is exposed by the exposure means 4.

(5) Next, the photosensitive material S exposed by one screen from the leading end is transferred by one screen by the suction transfer means 3, and the second screen of the photosensitive material S is moved to the proper exposure position of the exposure stage 4A. To stop.

(6) Next, the photosensitive material S is masked by a paper mask 5 except for the exposure screen, and is exposed by the exposure means 4.

(7) By repeating the above operation,
The photosensitive material S is fed by a frame, and the photosensitive material S is sequentially exposed. At this time, as described above, the photosensitive material S is pulled out of the magazine 1 by the suction transfer unit 3.

(8) On the other hand, the exposed photosensitive material S is released from the suction by the suction transfer means 3 and leaves the exposure stage 4A from the leading end of the photosensitive material S. Then, when the photosensitive material S is transported for several screens by the suction transport means 3, the leading end of the photosensitive material S reaches the transport roller 6.

(9) The photosensitive material S that has reached the transfer roller 6
Is pressed against the transfer roller 6, the suction fan 31A of the suction transfer means 3 is stopped, and the exposure stage 4 is stopped.
The photosensitive material S on A is released from the suction transfer means 3.

(10) Thereafter, the photosensitive material S is fed by the transport roller 6 so that the photosensitive material S is exposed one frame at a time. At the same time, the photosensitive material S is pulled out from the magazine 1.

The speed at which the photosensitive material S is transported by the transport roller 6 is set to be higher than the speed at which the photosensitive material S is withdrawn by the pull-out roller 2. The photosensitive material S is pressed against the transport roller 6 and transported. When done
Pull-out roller 2 due to the presence of the one-way clutch
The photosensitive material S can be transferred without receiving the pressure resistance.

(11) The exposed photosensitive material S is
After passing through the loop forming stage 7, it is sent to the development processing section B and is subjected to development processing.

(12) The photosensitive material S developed in the developing section B is cut by a cutter (not shown) frame by frame and collected on a tray B1.

Adsorption transfer means 3 for transferring photosensitive material S
In addition to the above, the following operation can be considered for the linking operation between the pull-out roller 2 and the pull-out roller 2.

That is, a sensor (not shown) is provided in the suction and transfer means 3, and when the photosensitive material S is sucked by the suction and transfer means 3, the sensor detects this and presses the drawer roller 2 against the photosensitive material S. After the release, the photosensitive material S may be drawn out of the magazine 1 by the suction transfer means 3.

The drawing roller 2 and the suction transfer means 3
And a loop portion (not shown) of the photosensitive material S is provided between the magazine 1 and the photosensitive material S from the magazine 1.
On the other hand, the suction and transfer means 3 may pull out the photosensitive material S from the loop portion.

Transfer roller 6 for transferring photosensitive material S
The following operation is also conceivable for the link operation between the pull-out roller 2 and the pull-out roller 2.

That is, a loop portion (not shown) of the photosensitive material S is provided between the pull-out roller 2 and the transfer roller 6, and the pull-out of the photosensitive material S from the magazine 1 is performed by the pull-out roller 2, while the photosensitive material S is exposed from the loop portion. The extraction of the material S may be performed by the transfer roller 6.

As described above, the linkage between the pull-out roller 2, the suction transfer means 3, and the transfer roller 6 in the transfer of the photosensitive material S can be appropriately changed in design.

The exposed photosensitive material S may be transferred to the developing section B only by the suction transfer means 3 without providing the transfer roller 6.

[0043]

As is clear from the above description,
According to the photographic printing apparatus of the present invention, when the leading end of the photosensitive material transferred by the drawer reaches the exposure stage, exposure can be started from the leading end of the photosensitive material, thereby eliminating loss of the photosensitive material. it can. The transfer speed of the photosensitive material in the transfer of the photosensitive material by the cooperation of the suction transfer means and the pull-out roller is set so that the transfer speed of the suction transfer means is higher than the pull-out speed of the pull-out roller. When transported by the means, the photosensitive material can be transported smoothly because it is set so as not to receive the pressure resistance of the pull-out roller by the action of the one-way clutch.

[0044]

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a photographic printing apparatus according to the present invention.

FIG. 2 is a perspective view of an adsorption transfer unit of the photographic printing apparatus of the present invention.

FIG. 3 is a block diagram for controlling a suction transfer unit, a transfer roller, and an exposure unit of the photographic printing apparatus of the present invention.

FIG. 4 is a configuration diagram showing a conventional photoprinting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magazine 2 Pull-out roller 3 Suction transfer means 3A Suction part 4 Exposure means 4A Exposure stage 6 Transfer roller

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03B 27/46 G03C 5/08

Claims (1)

(57) [Claims] 1. A photographic printing apparatus for extracting a roll-shaped photosensitive material from a magazine by a drawer, transferring the photosensitive material to an exposure stage without cutting, and transferring the exposed photosensitive material to a development processing unit. The drawer includes a drawer roller equipped with a one-way clutch for free rotation in the direction in which the photosensitive material is drawn, and has a suction portion opposed to a stage surface of the exposure stage; and The photosensitive material transported to the photosensitive material transported by the suction unit is transported by sucking the photosensitive material to the top of the photosensitive material. The transfer speed by the transfer means is set to be higher than the pull-out speed by the pull-out roller, and the photosensitive material is sucked and transferred. When being transported by means, photographic printing apparatus characterized by being set so as not to receive the crimp resistance of the drawer roller by the action of the one-way clutch.