JPH03294853A - Loop forming device for beltlike material - Google Patents

Abstract

PURPOSE:To specify a loop forming direction, to eliminate the waving of the beltlike material, and to suppress the occurrence of jamming in loop formation by energizing an arm by an energizing means toward the stand-by position of a movable guide when the movable guide is set at the stand-by position. CONSTITUTION:When the tip of the belltike material passes, the movable guide 65 reaches a guide position and the tip of the beltlike material is guided from a 1st processor to a 2nd processor. After the tip is guided, the movable guide 65 is switched to the stand-by position to form a space for looping. Then a loop begins to be formed by the difference in fed speed between the 1st and 2nd processors. At this time, the arm 70 is energized by the energizing means to enter the space for looping, so the loop forming direction is determined forcibly by this arm 70. Further, the arm 70 is present in the loop, so the inter nal surface of the loop is prevented from coming into mutual contact. Conse quently, the sticking of the beltlike material owing to the contacting is eliminat ed and the jamming at the loop formation part 29 is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a loop forming device for a strip of material, and more particularly to a loop forming device for a strip of material such as photographic paper for storing a strip of material in a loop shape.

(Prior Art) In a printer processor, a printer section performs printing exposure on photographic paper (hereinafter referred to as paper), and a processor section develops the paper that has been printed and exposed.The printing exposure in the printer section is As is well known, since the paper is fed frame by frame to the print position, the paper is fed intermittently.

Furthermore, in the processor section, the paper is continuously fed into each processing tank for development processing, so the paper is continuously fed.

Further, the processing speeds of the printer section and the processor section are also different. For this reason, due to differences in processing speed and paper feeding method, a loop forming device is installed between the two in order to absorb the difference in processing speed, etc. and enable smooth processing in the processor section. ing.

[Problem to be solved by the invention]

However, simply providing a loop forming device does not
When the paper transitions from a straight line to an arcuate loop,
Due to the rigidity and curl of the paper, the paper may bend in a direction different from the direction in which you want to create the loop, causing the paper to bend in a wavy manner, causing paper jams, and making it impossible to feed the paper smoothly. In particular, the paper's own weight is used when forming a horizontal loop while conveying a strip material vertically, or when attempting to form a loop vertically above a strip material while conveying it horizontally. When this is not possible, the above tendency becomes noticeable.

Furthermore, as the loop becomes larger, the inside of the looped paper tends to come into contact with each other. When these come into contact, if the inner side is a photosensitive emulsion layer, these photosensitive emulsion layers will stick to each other and will not form a normal loop shape, causing paper jams. In particular, when the paper is conveyed vertically and the loops are formed to protrude horizontally, the roots of the loops tend to come into contact with each other due to the paper's own weight, and the above-mentioned problem becomes more pronounced. Further, similar problems occur not only with photographic paper but also with thin strip materials such as webs and strip materials that are likely to be adversely affected by static electricity generation.

The present invention is intended to solve the above-mentioned problems, and provides a belt-like material that can specify the direction in which a loop is formed, and that prevents jamming of paper or other belt-like materials that easily come into contact when forming loops. An object of the present invention is to provide a loop forming device.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a guide position for guiding the strip material from a first processing device to a second processing device when the tip of the strip material passes, and a guide position for storing the strip material in a loop shape. A movable guide that can be selectively switched to a retracted position that is retracted from the movable guide to form a loop space, an arm that is swingably attached to the movable guide in the vicinity of the movable guide, and an arm that is attached to the retracted position of the movable guide. In order to form a gap for running the strip material between the arm urged by the urging means and the movable guide, a regulating part for restricting movement of the arm is provided.

[Operation] When the tip of the strip material passes, the movable guide is in the guide position and guides the tip of the strip material from the first processing device to the second processing device. After this guidance, the movable guide is switched to the retracted position and a loop space is formed. A loop then begins to form due to the difference in the feed speeds of the first and second processing devices. At this time, since the arm is urged to enter the loop space by the urging means, the loop formation direction is forcibly directed by this arm. Also, the presence of the arms within the loops prevents the inner surfaces of the loops from coming into contact with each other. This eliminates sticking of the strip material due to contact and suppresses jamming of the loop forming portion. In addition, the regulating part restricts the movement of the arm and forms a gap between the arm and the movable guide for the running of the strip material, so the arm does not become an obstacle to the running of the strip material and the strip material always runs smoothly. Sent.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 2 showing a schematic configuration of a printer processor embodying the present invention, a magazine storage section 11 includes a paper 10
A magazine 13 is set in which the material is wound and stored in a roll on a winding shaft 12. Paper 1 from this magazine 13
0 is pulled out by the nip roller pair 15 and passes through the first loop forming section 21 paper guide section 22 . The paper is then conveyed to the printing position 25 via the first paper feeding section 23, where it is printed and exposed by the printer section 26. This printed and exposed paper 10 is fed frame by frame by a first paper feeding section 23, and sent to a processor section 30 via a second loop forming section 28 and a third loop forming section 29 in which the present invention is implemented, where it is developed. It is processed. In addition, a well-known cut/sort marker 32 is installed on the paper exit side of the print position 25.
A cut mark consisting of a small hole and a sort mark indicating the division of each order are recorded between the printed and exposed frames. Further, a first cutter 34 is disposed on the paper outlet side of the first vapor feeding section 23, and is used when finishing the printing operation or when cutting the paper 10.
When replacing the frame with a different size or area (gloss, knot, etc.), the paper 10 is cut immediately after the printed frame.

A first diagram showing the third loop forming part 29 in which the present invention is implemented.
In the figure, there are a pair of feed rollers 40 on the paper side.
is located. The feed roller pair 40 includes a drive roller 42 rotated by a pulse motor 41 and a guide roller 43 that rotates in contact with the drive roller 42 .

Further, the feed roller pair 40 is provided with paper guides 44 and 45 bent into an arc shape, and guides the paper 10 from the horizontal to the vertical direction. Further, a large number of guide rollers 47 and 48 are rotatably attached to the paper guide 45, which reduces resistance when the leading edge of the paper passes and smoothly guides the paper 10.

On the paper exit side of the feed roller pair 40, a first paper sensor 49 of a light emitting/receiving type for detecting the passage of the leading edge of the paper, and a second canter 50 are disposed following this, and a second canter 50 is arranged to drive the motor 51. The paper 10 is cut by. This cutter 50 is used when printing work is temporarily interrupted. A guide roller 52 is rotatably attached to the paper exit side of the cutter 50.

A pair of delivery rollers 55 for delivering paper to the processor section 30 is arranged above the cutter 50. This carry-out roller pair 55 includes a drive roller 57 rotated by a motor 56 and two guide rollers 58 that rotate in contact with the drive roller 57.
It is composed of. Two arcuate paper guides 60 and 61 are attached to this pair of carry-out rollers 55, and the paper guides 60 and 61 are attached to the paper guides 60 and 61, which change the direction of the paper 10, which is being conveyed almost perpendicularly from below, diagonally downward and guide it to the processor. Part 3
Guide to 0. Further, a fixed guide 53 is arranged close to the movable guide 65 set at the guide position,
A guide roller 54 is rotatably attached to this. A second paper sensor 63 is arranged on the paper exit side of the pair of delivery rollers 55 to detect the leading edge of the paper.

Further, a movable guide 65 is attached to the paper side of the pair of discharge rollers 55 so as to be rotatable within a range of 90' by a guide switching motor 66.

The guide switching motor 66 switches the leading edge of the paper to the cutter 50.
a guide position (indicated by a two-dot chain line in FIG. 1) that guides the paper from the paper exit side of the pair of carry-out rollers 55 to the paper input side; and a retreat position that rotates 90 degrees from this guide position to form a loop forming space. (solid line display), the movable guide 65 is selectively switched. A loop sensor 67 is arranged in the loop forming space to detect when the loop formed by the paper 10 reaches a predetermined length.

Further, an arm 70 is rotatably attached to the rotation shaft 68 of the movable guide 65 to prevent the inner surfaces of the loops from coming into contact with each other and sticking together. This arm 70
A guide roller 71 is rotatably attached to the tip of the guide roller 71 . The rotation axis 6 is connected between the arm 70 and the movable guide 65.
8 is provided with a torsion spring 72. One engagement end 72A of this torsion spring 72 is engaged with the back surface of the movable guide 65, and the other engagement end 72B is engaged with the back surface of the arm 70.
is urged toward the movable guide 65 side. Further, a pin 74 is formed on the arm 70 so as to protrude laterally, and this pin 74 abuts against a stop portion 75 of the movable guide 65. As a result, rotation of the arm 70 is restricted, and a paper conveyance gap is formed between the movable guide 65 and the guide roller 71.

Detection signals from the first and second paper sensors 49 and 63 and the loop sensor 67 are sent to the controller 80. The controller 80 is constituted by a well-known microcomputer, and is connected to a keyboard 81 for inputting various commands and a display 82 for displaying the contents of commands inputted through the keyboard 81. Then, the controller 80 controls each motor 41, 51, 56, 66 based on the signals from each sensor.
Sequence control via. In addition, as will be described later, it controls other paper transport systems as well as the printer section 26 and processor section 30.

Next, referring mainly to the schematic diagram in FIG. 1 and the flowchart in FIG. 3, the third loop forming section 29 of the controller 80
The processing procedure will be explained below. When forming a loop, the controller 80 rotates the guide switching motor 66 to
As shown in FIG. 4, the movable guide 65 is brought into a closed state.

After this, the controller 80 controls the paper feeding motor 4.
1 is turned ON and the feed roller pair 40 is rotated. By this rotation, the leading edge of the paper is gripped by the pair of feed rollers 40, guided by paper guides 44 and 45, and conveyed to the cutter 50. When the leading edge of the paper passes the first paper sensor 49 during this conveyance, this sensor 49
is turned on, and the paper leading edge detection signal is sent to controller 8.
Send to 0. Based on this signal, the controller 80 turns on the paper delivery motor 56 and also rotates the delivery roller pair 55.

By the rotation of these roller pairs 40.55, the leading edge of the paper is sent out from the paper delivery roller pair 55 toward the processor section 30 via the movable guide 65 and paper guide 60.61. At this time, when the second paper sensor 63 detects that the leading edge of the paper has passed, the controller 80 turns on the guide switching motor 66 and opens the movable guide 65 as shown in FIG.

Since the paper feed speed of the paper feed roller pair 40 is set to be sufficiently faster than the paper feed speed of the paper feed roller pair 55, a loop is formed in the loop forming portion 29 due to this conveyance speed difference, as shown in FIG. begins to be At this time, since the arm 70 is biased toward the movable guide 65 by the torsion spring 72, the guide roller 71 of the arm 70 presses the paper 10 toward the movable guide and forcibly forms a loop in the loop forming portion 29. Form. Eventually,
When the loop reaches a predetermined length and this is detected by the loop sensor 67, the paper feed motor 41 stops after rotating for a predetermined number of pulses.

Since the paper delivery roller pair 55 is continuously rotating during this loop formation, the paper 10 is delivered to the processor section 30 at a predetermined speed, and the loop amount is reduced accordingly. When the loop sensor 67 turns OFF due to this decrease, the paper feed motor 41 is rotated by a fixed amount,
After forming a loop of a predetermined length, the rotation of the paper feed motor 41 is stopped. Thereafter, the paper 10 is continuously sent to the processor section 30 by repeating the same process. At this time, since a loop is always formed on the paper feed side of the pair of paper carry-out rollers 55, the load on the pair of carry-out rollers 55 becomes approximately constant, making it possible to feed the paper stably. Additionally, since a certain amount of loops are formed, the cutter 50 can be activated during temporary interruptions in printing operations.

In the loop there is an arm 70 and a guide roller 71.
Because of this, the surfaces of the photosensitive emulsion layers inside the loop do not come into contact with each other and stick together, thereby preventing jamming.

Next, the overall operation of the printer processor will be briefly explained with reference to FIG. The paper 10 is pulled out from the magazine 13 set in the magazine storage section 11 by the rotation of the nip roller pair 15, and the paper 10 is pulled out from the magazine 13 set in the magazine storage section 11.
．． The paper guide 22 and the first paper feed section 23 set the paper at the print position 25 . The tip of the paper is the first
When reaching the paper feeding section 23, the first loop forming section 2
One movable guide 88 opens to form a loop of a predetermined length. An image of a negative film 90 set on a film carrier 89 is formed on the paper 10 at the print position 25 by a printing lens 91 and a mirror 92 . As is well known, the image on the negative film 9o is processed by the light quality adjustment section 93.
It is illuminated by printing light from a light source 95 that has passed through a diffusion box 94. Further, the image on the negative film 90 is scanned by a scanner 96.
Each point is subjected to three-color separation photometry, and the exposure amount is calculated from various characteristic values obtained from the photometry values. Then, based on this exposure amount, each filter position and exposure time of the light quality adjustment section 93 are determined, and the light quality adjustment section 93 and the shutter drive section 97 are controlled based on this, and printing exposure is performed with an appropriate exposure amount.

On the exposed paper, a cut mark is recorded between each frame and a sort mark is recorded at each order break by a cut/sort marker 32. after that,
When the paper is fed frame by frame by the paper feeding section 23 and the loop amount of the first loop forming section 21 decreases due to this frame feeding,
The nip roller pair 15 rotates to replenish this.

Thereafter, printing exposure is performed one after another by the same procedure. After the exposed paper 10 is formed into a loop of a predetermined length in the second loop forming section 28, it is sent to the third loop forming section 29, where, as described above, after the loop is formed, the paper 10 is The image is sent to the processor section 30 and subjected to development processing.

If you want to temporarily stop printing, press the second cutter 5.
0 is activated to cut the paper 10 at the cut mark position. Therefore, even if printing is temporarily interrupted, the exposed paper 10 is continuously fed to the processor section 30, so the development process in the processor section 30 is not interrupted.

Further, when finishing the printing work or when replacing the paper 10, the paper 10 is wound up and stored in the magazine 13. In this case, first, the paper is sequentially fed by a certain amount via the first feeding section 23, and the paper 10 is cut at the cut mark position. The printed paper 10 after cutting is subsequently sent to the processor section 30 and subjected to development processing.

Next, the drive of the motor 98 that rotates the nip roller pair 15 is transmitted to the take-up shaft 12 of the magazine 13 via a clutch 99 with a planetary gear, and this is rotated in the winding direction to transfer the fed paper 10 to the magazine 13. Store inside.

In addition, although the above embodiment was carried out in the case where the paper 10 is conveyed in a substantially vertical direction and a loop is formed in the horizontal direction during this conveyance, the conveyance direction of the paper 10 is not limited to this. , or horizontally. However, as in this embodiment, when the paper is conveyed in the vertical direction and a loop is formed in the horizontal direction, it is possible to effectively suppress the paper from sticking together due to their own weight.

Furthermore, in the above embodiment, the arm 70 is biased toward the movable guide 65 by the torsion spring 72, but other spring materials may be used for this purpose. You can force it.

Furthermore, the guide roller 71 is provided at the tip of the arm 70 so as to roll into contact with the paper 10, but instead of this, the tip of the arm may be formed into an arc shape to guide the paper. . Further, in the above embodiment, the arm 70 is rotatably attached to the shaft of the movable guide 65, but it can also be attached separately.

Further, the mounting position of the arm 70 is not limited to the above-mentioned embodiment; for example, the rotating wheel of the arm 70 may be located on the guide tip side when the movable guide 65 is closed.

Further, in the above embodiment, the conveyance speed of the feed roller pair 40 side is set higher than the speed of the discharge roller pair 55, and a loop is formed by this speed difference, but the present invention is limited to this. Alternatively, the pair of feed rollers 40 may be conveyed at high speed when forming a loop. Furthermore, if the processing device for the next step does not need to be continuously fed, the pair of carry-out rollers 55 may be stopped when the loop is formed.

Further, in the above embodiment, the present invention is implemented when the paper 10 that has been printed and exposed in the printer section 26 is sent to the processor section 30, but the present invention is not limited to this, and the present invention is not limited to this. The present invention may be implemented in a loop forming unit disposed in a computer or a loop forming unit of printing-related equipment.

〔Effect of the invention〕

As explained above, according to the present invention, when the movable guide is set to the retracted position, the arm is biased toward the retracted position of the movable guide by the biasing means, so that the arm is activated in the loop forming direction. can be identified. Further, the belt-shaped material does not wave when forming the loop, and jamming can be suppressed from occurring when forming the loop. Furthermore, since the arm enters into the loop, the inner 4 degrees of the loops are prevented from coming into contact with each other, and it is possible to eliminate the sticking of the strip material due to contact and to suppress the occurrence of jamming after the loop is formed. In addition, since the regulating part that regulates the movement of the arm is provided, even if the arm is biased toward the retracted position of the movable guide by the biasing means, a gap for running the strip material is not formed between the arm and the movable guide. Therefore, the arm does not become an obstacle to the running of the strip material, and the strip material can be fed smoothly at all times.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the main parts of a belt-shaped material loop forming apparatus according to the present invention. FIG. 2 is a schematic diagram showing the overall configuration of a printer processor embodying the present invention. FIG. 3 is a flowchart when forming a loop. FIG. 4 is a sectional view of a main part showing the movable guide in a closed state. FIG. 5 is a sectional view of a main part showing a state in the middle of loop formation after the movable guide is opened. 10 ・ 29 ・ 40 ・ 50 ・ 55 ・ 65 ・ 70 ・ 71 ・ 72 ・Paper loop forming section feeding roller vs. cutter unloading roller vs. movable guide arm guide roller torsion spring.

Claims (1)

[Claims] (1) In a belt-shaped material loop forming device that is provided between a first and a second processing device that processes a belt-shaped material and stores the belt-shaped material in a loop shape, when the leading end of the belt-shaped material passes, the belt-shaped material is A movable guide that can be selectively switched to a retracted position that retracts from the guide position to form a loop space when storing the strip material in a loop shape at a guide position that guides the material from the processing device to the second processing device; An arm that is swingably attached close to the movable guide, a means for biasing the arm toward the retracted position of the movable guide, and a band-like material between the arm biased by the biasing means and the movable guide. What is claimed is: 1. A loop forming device for a belt-shaped material, characterized in that a regulating portion for regulating movement of an arm is provided in order to form a running gap.