JPS6155049A - Device for continuous feed of rolled printing paper - Google Patents

Abstract

PURPOSE:To enhance the rate of operation of a printer by enabling two rolls of printing paper to be automatically connected and be continuously forwarded to the printer in such a manner that a front and rear end stopping device allows the front and rear ends of two rolls of printing paper to be brought to a stop position with a short distance apart facing each other and to be automatically bonded. CONSTITUTION:The rear end of one rolled printing paper 24 is moved to and stopped at a connecting point only with a drive roller operated. Subsequently, the front end of another roller printing paper 26 is also moved to and stopped at an another connecting point which is spaced slightly apart from the above said connecting point for the rear end of the rolled printing paper 24. Under this condition, a tape bonding device 66 allows a parting tape 72 to be sharply bent by a parting bar 84 so as to separate the tip of an adhesive tape 74 from the parting tape 72 permitting the tip to go underneath a press roller 86. Both the rear and front ends of two rolls of printing paper 24 and 26 are bonded and connected each other (24 and 26) with the adhesive tape 74, then a rolled printing paper that is thus constructed is continuously fed to a printer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a continuous feeding device for photographic roll paper that connects the leading and trailing ends of a plurality of rolls of photographic paper and continuously feeds the paper to a printer.

[Background Art and Issues to be Solved] In a printer that sequentially pulls out a roll of photographic paper from its outer periphery and prints at high speed from a negative roll that has been similarly accumulated in a roll, it is necessary to print the roll image in the pre-printing process. When the trailing edge of the paper is detected, the printing operation is automatically stopped, and the printing operation is resumed after the operator manually loads the next roll of photographic paper.

This work of replacing the photographic roll paper requires about two minutes for a typical worker, and during this time, printing work is not performed and the printer operating rate decreases. Furthermore, during normal work, the worker is doing other work in a different location, so even if the printer stops and a second printer stop alarm is activated, the worker will be able to detect this and send the printer to the printer. It may take a long time for the printer to arrive, and the printer may remain stopped during this time. In high-speed printers that print more than 200 frames per minute, this stoppage has a significant impact on the printer operating rate.

Furthermore, in such conventional printers, the cut between both rolls of printing paper is usually in the middle of the negative roll, so that after printing, there are two rolls of printing paper for one negative roll. Therefore, the number of operations in each process after printing, such as removing it from the printer and feeding it into the developing machine, is doubled, and the number of operations required for each process after printing, such as removing it from the printer and feeding it to the developing machine, is doubled.
Print roll! The task of comparing the correspondence between the roll and the negative roll is complicated and takes a long time. In particular, when cutting a print roll for each image and placing it in a bag corresponding to the negative for each order (cut matching work), the part that straddles the rear end of the print roll and the front end of another print roll is Prints must be matched with the negatives to ensure there are no duplicates, leaks, scratches, or other defects, which greatly reduces work efficiency.

In consideration of the above facts, the present invention has developed a roll printing system that connects the trailing end of a roll of photographic paper to the leading edge of the next roll of photographic paper even when using roll photographic paper, and allows continuous supply of photographic paper to the printer. The purpose is to obtain a continuous paper feeding device.

[Summary and operation of the invention] The continuous feeding device for photographic roll paper according to the present invention includes a plurality of photographic paper roll installation sections, first guide paths for pulling out photographic paper from these installation sections, and these first guide paths. The guide paths merge into a second guide path that guides the photographic paper from the first guide path to the printer, and the trailing end of one roll of photographic paper 9 is stopped at a predetermined position of this second guide path. a trailing end stopping means; a leading end stopping means for stopping the leading end of the other roll of photographic paper in correspondence with the trailing end of the photographic roll; and adhering a joining tape to the trailing end and leading end of the corresponding roll of photographic paper. The rear end of one roll of photographic paper is connected to the front end of another roll of photographic paper using an adhesive tape, so that the roll of photographic paper can be continuously fed.

[Embodiment of the Invention] FIG. 1.2 shows a roll photographic paper continuous feeding device according to this embodiment, in which a machine frame 10 is arranged adjacent to a printer 12, which is a photographic printing device. This machine frame 1O is provided with roll photographic paper installation sections 14, 16 at the top and bottom, respectively, and accommodates roll photographic paper 18, 20, respectively. A dark bag for replacing the bright room is provided in front (on the near side) of the roll photographic paper installation section 14,16.

These rolls of photographic paper 18.20 are each attached to a support shaft 22, and the support shaft 22 is rotatably supported on the machine frame 10 and pulled out from the roll of photographic paper 18.20 by a frictional resistance imparting means (not shown). Photographic paper 24.26 Heavily tensioned. The photographic paper 24 is mounted on a fixed roller 28 that is pivotally supported on the machine frame 10. and is pulled out via a tension roller 30 that is pivotably supported on the machine frame 10, and is held between a drive roller 32 and a pinch roller 34, and then between a drive roller 36 and a pinch roller 38. It has become. On the other hand, the photographic paper 26 pulled out from the roll photographic paper setting section 16 is placed on a fixed roller 29. After being wrapped around the tension roller 31, the drive roller 33. pinch roller 3
5 and further between the driving rollers 36. It is designed to be pinched by pinch rollers 38.

Here from the tension roller 30.31 to the drive roller 32
, 33, the photographic paper 24.26 is guided via '40.
42, and the tips of these guide pipes 40, 42 reach just in front of the drive roller 36 and pinch roller 38. The extension axes of these guide pipes 4o, 42 are connected to the drive roller 36. It is directed toward the pinching portion of the pinch roller 38.

This guide pipe 40 is connected to the fixed roller 28. Tension roller 30. Drive roller 32. Together with the pinch roller 34, it constitutes a first guide path for the photographic paper 24, and the guide pipe 4
2 is a fixed roller 29. Tension roller 31. Drive roller 33. Together with the pinch rollers 35, they constitute another set of first guide paths. As a matter of course, a portion of the guide pipe 40, 42 is cut out at the drive roller 32, 33, pinch roller 34, 35 portion, and the photographic paper 24.
26 is held between these rollers.

Guide pipe 40. The guide pipe 42 has a print. □A sensor 510 and a sensor 510 are located just before the 24 and 26 are pinched between the drive roller 32 and the pinch roller 33, and between the drive roller 33 and the pinch roller 35, respectively. , so that it is possible to detect the state in which the leading edge of the photographic paper 24°26 has passed. Each of these sensors SIO and Sll has an infrared light emitting diode on one side of the trajectory of the photographic paper 24, 26, and a phototransistor on the other side, so that they can detect light reception (the following sensors also have a similar configuration). .

Further, guide pipes 40 are provided between the driving rollers 32 and 33 and the pinching portions of the driving roller 36 and the pinch roller 38, respectively.
．． 42 Hesensa S20. S21 is arranged.

The above sensor S10. The Sll detects that the leading edge of the photographic paper 24, 26 is manually fed through the guide pipe 40, 42, rotates the drive rollers 32, 33, and moves the leading edge of the photographic paper 24, 26 to the driving roller. Sent out in 36 directions, sensor S20. At step S21, the drive rollers 32 and 33 are stopped, and the leading edge of the photographic paper 24 and 26 is moved to the sensor S20. S21
It is designed to stop at the location.

Note that the drive rollers 32 and 33 are rotatable only in the directions of arrows A and B in FIG. Care is taken to prevent it from returning due to the tension exerted by the tension rollers 30, 31.

Furthermore, sensor S20. A sensor S30.31 is attached to the guide pipe 40.42 between S21 and the drive roller 36, and detects which of the pair of first guide paths the photographic paper is being printed on. It is supposed to be done.

A pulse motor 46 is attached to the drive roller 44 which is disposed on the downstream side of the drive roller 36 and is at the same height as the drive roller 36.
The output is transmitted through the clutch 45 and the chain 747, allowing accurate rotation by a desired rotation angle. The pulse motor 46 is connected to the drive roller 32 through the clutch 45 and checks 747A, 47B, and 47G.
33 and 36, a dedicated pulse motor may be provided for the drive roller 44.

A sensor 540 is disposed immediately after the drive roller 36, and after detecting the rear end of the photographic paper, the motor 46 is rotated by a certain pulse, and the drive roller 44 stops the rear end of the photographic paper at the connection position. There is. Also this sensor S40
motor 4 for a certain pulse after detecting the leading edge of the photographic paper.
6 is rotated, and drive rollers 32 and 36 or 33 and 36 are rotated to stop the leading edge of the photographic paper at the connection position.

Presser rollers 48 and 50 are movable toward and away from the drive roller 44, and these presser rollers 48 and 50 are supported by a lever 54 which is supported by a shaft 52 to the machine frame 10. This lever 54 moves the presser roller 48,50 to the drive roller 44.
It can take two positions: a pressed state and a separated state, and the state in which it is separated from the drive roller 44 is detected by a limit switch 56.

A tension roller 62 and a fixed roller 60 are pivotally supported downstream of the drive roller 44, and the photographic paper 24 or 26 pulled out from the drive roller 44 is held by the tension roller 62.
The hooks are sequentially passed to the fixed roller 60 and then sent out to the printer 12. This tension roller 62 is movable up and down and uses its own weight to apply tension to the photographic paper between 44.60 and 551.5.
52, in S53, the vertical height is the photographic paper 24
or 26 loop lengths can be detected.

When the tension roller 62 detects the tension roller 62, the drive roller 44 is activated, and when the sensor 553 detects the tension roller 62, the drive roller 44 decelerates and stops. Therefore, the photographic paper 24 or 26 always has an appropriate loop length by adjusting the drive of the drive roller 44, and the load acting on the drive roller of the adjacent printer 12 has little variation, so that the amount of transport is always stable. Further, if the sensor S51 detects the tension roller 62, it is in an abnormal state and an emergency stop signal is sent to the printer 12.

Here, the photographic paper moving path from the drive roller 36 to the fixed roller 60 is the photographic paper 24 or 2 fed from the first guide path.
6 constitutes a second guide path for guiding the printer 128.

As shown in FIG. 2, a guide plate 64 is attached to the machine frame 10 between the drive roller 36 and the drive roller 44, and its surface serves as a guide surface for the photographic paper 24 or 26.

A tape sticking means 66 corresponds to the guide plate 64. This tape pasting means 66 has a feed reel 68 and a take-up reel 70 that are pivotally supported on the machine frame 10.
The female pattern paper 72 is fed from a feed reel 68 to a take-up reel 70. The feed reel 6'8 is always given back tension by a torque motor (not shown), and the take-up reel 70 is configured to be able to wind up the required amount of release paper 72 by a motor (not shown).

Adhesive tapes 74 are adhered to the release paper 72 at predetermined intervals as shown in FIGS. 3 and 4. This adhesive tape 7
4, the release paper 72 is made of a smooth material such as Teflon, so that it can be easily peeled off from the female pattern paper 72. Further, it is preferable that the adhesive tape 74 has a predetermined thickness and is made of a material having a certain rigidity, such as an aluminum base material.

The release paper 72 sent out from the delivery reel 68 is guided by rollers 76 and 78, and then sequentially wound around a pair of rollers 80 and 82 arranged at equal intervals just above the guide plate 64, and then wound up. The reel 70 is reached. Furthermore, these rollers 80, 82
In between, the stripping bar 84 is arranged closer to the guide plate 64 than the rollers 80, 82, and the stripping bar 84 is bent at an acute angle.

Between rollers 78 and 80 is a sensor S60. S61, S
62 are arranged so that the passage of the female pattern paper 72 can be detected respectively. Among these, the sensor S60 detects the rear end of the release paper 72 and issues an alarm to prompt replenishment of the female pattern paper 72, and the sensor 561. S62 detects oval holes 73 drilled at predetermined intervals in the female paper pattern 72, and when the sensor S61 detects the holes, presses the presser roller 86 against the guide plate 64 to press the tip of the adhesive tape 74 onto the photographic paper 24. When the sensor S62 detects the circular hole 73, the feeding of the female pattern paper is stopped, and then the drive rollers 44 and 36 are rotated to feed out the photographic paper.

As shown in FIG. 4, the presser roller 86 is pivotally supported by a pin 90 at the tip of a pivot arm 88, and the pivot arm 88 is pivotally supported by a hinge 92 to the guide plate 64. Also, this swing arm 88 is connected to a movable iron core 96 of a solenoid 94 attached to the machine frame 10.
It is excited in response to a command from the sensor 561, and the swing arm 8
8 is rotated to bring the presser roller 86 closer to the guide plate 64.

A punching means 98 is provided on the guide plate 64 adjacent to the tape applying means 66. This punching means 9
8, an elongated hole 104 is bored in a punch 102 that is guided by a guide 100 to the upper and lower parts, and the eccentric rotation that is implanted eccentrically to the output shaft 108 of a motor 106 attached to the machine frame 10 is performed. When the punch 102 rotates, the punch 102 moves to the lowest position as shown by the imaginary line in FIG. Stop at the solid line position in Figure 2. The hole 112 drilled in this way is used by the subsequent printer 1.
2, and control is performed so that the joint portion of the photographic paper is not exposed to light.

This motor 106 is driven by the photographic paper 24 or 26 when connected.
This is done immediately if the rear end of the is stopped.

The sensor S70 on the downstream side of the joining portion detects the presence or absence of photographic paper, thereby making it possible to detect a connection error in the photographic paper.

Note that a microcomputer is used to control the drive means based on detection signals from such various sensors.

Next, the operation of this embodiment will be explained.

When loading the photographic paper 24, 26 into the roll photographic paper installation section 14, 16, use a dark bag for bright room replacement (not shown),
A worker presses the support shaft 22 of the roll photographic paper installation section 18 or 20.
The leading end of the photographic paper 24 or 26 pulled out from the guide pipe 40 or the guide pipe 4 is
2 to the drive roller 32 or drive roller 33 direction.

When the sensor S10 or the sensor Sll detects the leading edge of the photographic paper 24 or 26 sent in, the driving roller 32
．． 33 is rotationally driven and sends out the leading edge of the photographic paper 24 or 26 toward the driving roller 36. When the leading edge is detected by the sensor S20 or the sensor S21, the clutch 45 is actuated to send out the leading edge of the photographic paper 24 or the driving roller 33.
stops and waits.

FIG. 1.2 shows a state in which the photographic paper 24 has already been pulled out from the roll of photographic paper 2o and is being fed to the printer 12. As shown in FIG. The photographic paper 24 pulled out from the roll of photographic paper 20 passes through the drive rollers 32, 36, 44 and reaches the printer 12, where it is subjected to frictional resistance between them. The added resistance may become large. For this reason, a problem may occur when printing is performed at high speed. However, in this embodiment, the drive roller 44 always controls the amount of movement of the tension roller 62, and the loop of the photographic paper 24 within a certain range is moved by the drive roller 44.
Since it is provided between the fixed roller 6o and the fixed roller 6o, the load acting on the drive roller in the printer 12 is small and constant.
Reliable high-speed transfer is possible.

Note that during the printing operation, the clutch 45 is activated, the drive rollers 32 and 33 idle, and the photographic paper is fed only by the driving force of the drive roller 44.

The rear end of the photographic paper 24 is the sensor 510. As the paper passes through S20 and sensor S30 sequentially, the rotation of the drive roller 44 becomes smaller, and when the rear end of the photographic paper 24 passes through the sensor 540, the pulse motor 46 that drives the drive roller 44 rotates by a certain number of pulses and then stops. , the drive roller 44 can accurately stop the rear end of the photographic paper 24 in the state (connection position) shown in FIGS. 2 and 3. Here printer 1
The second printing operation is temporarily stopped.

When the rear end of the photographic paper 24 stops at the connection position shown in FIG.
2 makes an oblong hole near the rear end of the photographic paper 24.

Next, the control device operates the drive roller 3 by actuating the clutch 45.
3. Drive 36 to pull out the leading end of the photographic paper 26. When the leading edge of the photographic paper 26 passes the sensor S40, the pulse motor 46 rotates by a slightly smaller number of pulses than when the rear end of the photographic paper 24 is detected, and then the clutch 4
5 and stop the drive rollers 33 and 36. Therefore, the leading edge of the photographic paper 26 is attached to the photographic paper 26 as shown in FIG.
It stops at a connection position slightly away from the rear end of the

As shown in FIG. 3, when the # pattern paper 72 to which the adhesive tape 74 is attached is bent at an acute angle by the separation bar 84 as the release paper 72 moves, the adhesive tape 72 has a predetermined rigidity.
4 has its leading end separated from the female pattern paper 72, enters below the presser roller 86, and comes into contact with the vicinity of the rear end of the photographic paper 24.

When the sensor S61 detects the circular hole 73 in the A-type paper 72, the control device activates the solenoid 94 to press down the presser roller 86 as shown in FIG. 3(B). and the guide plate 64, and its adhesive surface is adhered to the rear end surface of the photographic paper 24.

When the release paper 72 is further fed, FIGS. 3(B) and (C)
As shown in FIG.
It is separated from the surface of the photographic paper 26 and comes into contact with the surface of the leading end of the photographic paper 26.

Here, when the sensor S62 detects the circular hole 73 in the A-type paper 72, the take-up reel 70 stops and the control device rotates the drive rollers 44, 36, and 33 at the same rotation speed, so the connection part is connected to the presser roller 86. The adhesive is reliably bonded, and furthermore, the adhesive is moved while being pressed by the press rollers 48 and 50 on the outer periphery of the drive roller 44, thereby ensuring the adhesion.

The photographic paper 26 that has been connected in this way is the photographic paper 24.
The image is then sent to the printer 12 and the printing operation is restarted. Note that if photographic paper corresponding to the length to be processed by the printer 12 is stored between the drive roller 44 and the fixed roller 60 while the photographic paper is connected, the printer can operate continuously without stopping temporarily when the photographic paper is connected. Good too.

While the photographic paper 26 is being fed, the worker again places a separate photographic paper 24 on the roll photographic paper setting section 14 and stops the leading end of the photographic paper 24 with the sensor S20. It becomes possible to automatically connect the leading edge of the photographic paper 24 to the edge.

In the above embodiment, a structure is shown in which the rear end of one photographic paper is connected by butting the leading edge of the other photographic paper, but the present invention is not limited to this, and the rear end of one photographic paper is connected to the rear end of the other photographic paper. It is also possible to have a structure in which the leading ends of the photographic papers are overlapped and an adhesive tape is attached to this overlapped portion. Further, in the above embodiment, a configuration using a pair of rolls of photographic paper was shown, but the present invention has three
It is also possible to prepare a plurality of rolls of photographic paper, and to connect a guide path for the photographic paper drawn out from these rolls to a second guide path. It is also possible to provide a display section for displaying the operating status of each part.

It goes without saying that the number of sensors can be changed as desired.

In the above embodiment, the connecting device is disposed adjacent to the printer, but it is also possible to integrate the connecting device into the printer.

[Effects of the Invention] As explained above, the continuous feeding device for photographic roll paper according to the present invention has a plurality of photographic paper roll installation sections, first guide paths for pulling out photographic paper from these installation sections, and a plurality of guide paths for pulling out photographic paper from these installation sections. The first guide path merges into a second guide path that guides the photographic paper from the first guide path to the printer, and the trailing end of one roll of photographic paper is placed in a predetermined position of this second guide path. a trailing end stopping means for stopping the other roll of photographic paper, a leading end stopping means for stopping the leading end of the other roll of photographic paper in correspondence with the trailing end of said roll of photographic paper, and a splicing tape applied to the trailing end and leading end of the corresponding roll of photographic paper. Since it has a pasting means for pasting, it is possible to automatically connect the leading and trailing ends of multiple rolls of photographic paper and supply them continuously to the printer, greatly improving the printer operating rate. At the same time, it has the excellent effect of reducing the number of man-hours for subsequent work and greatly improving efficiency.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the continuous feeding device for rolled photographic paper according to the present invention, Fig. 2 is an enlarged view of a part of Fig. 1, and Fig. 3 is an enlarged view showing the tape pasting means. , FIG. 4 is an exploded perspective view showing the tape application means and sensing means. 12...Printer, 14...Fist roll photographic paper installation section, 16...-Roll photographic paper installation section, 18...Roll photographic paper, 20Φ/e roll photographic paper, 24...Photographic paper, 26. ... Photographic paper, 36. Drive roller, 4411. φ drive roller, 46.. Pulse motor, 66. O. Tape pasting means, 72. Release paper, 74. Fist. Adhesive tape.

Claims (1)

[Claims] (1) A plurality of roll photographic paper installation sections, a first guide path for pulling out photographic paper from each of these installation sections, and a confluence of these first guide paths so that photographic paper can be pulled out from the first guide path. a second guide path for guiding the photographic paper to the printer; trailing end stopping means for stopping the rear end of one roll of photographic paper at a predetermined position on the second guide path; a leading end stopping means for stopping the photographic paper in correspondence with the trailing end thereof;
A continuous feeding device for photographic roll paper, comprising: a pasting means for pasting a joining tape to the rear end and front end of the corresponding roll of photographic paper.