JP2000214569A - Photosensitive material cutting device - Google Patents

Abstract

(57) [Problem] In a photosensitive material cutting device for cutting a photosensitive material with a blade, even if chips are generated from the photosensitive material at the time of cutting, the chips are hard to adhere to the cut sheet-shaped photosensitive material, and The present invention provides a photosensitive material cutting device that can easily inspect a sheet-shaped photosensitive material. A chip removing mechanism (54) is provided for removing chips (3a) generated by cutting from the vicinity of blades (34, 36) by airflow and dropping them into a chip storage box (19) or the like. In addition, the chip removal effect may be enhanced by mixing an ion pair capable of neutralizing static electricity into the airflow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a photosensitive material cutting device, and more particularly, to a photosensitive material cutting device for cutting a photosensitive material with a blade.

[0002]

2. Description of the Related Art In the above-described photosensitive material cutting apparatus, fine chips (for example, fine spiral or powder cut pieces having a width of about 1 mm) may be generated from the photosensitive material during cutting. As a method of treating chips, the chips were left to move away from the vicinity of the blade by its own weight.

[0003]

Therefore, in the above-described photosensitive material cutting device, chips (cut pieces of the photosensitive material) generated from the photosensitive material at the time of cutting adhere to the cut sheet-shaped photosensitive material (the photosensitive material). Is considered to be the adhesion based on the action of static electricity generated by the friction between the blade and the blade. Chips may adhere to the photosensitive material immediately after generation, or may once adhere to the blade and transfer to the photosensitive material again.) However, there is a problem that careful inspection and chip removal work are required as the next process, and there is room for improvement.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned drawbacks of the conventional photosensitive material cutting apparatus exemplified above.
Even if chips are generated from the photosensitive material at the time of cutting, it is difficult for the chips to adhere to the sheet-like photosensitive material after cutting, and as a result, a problem has been solved in which a problem has arisen that it is necessary to remove the chips during inspection work. Is to provide.

[0005]

In order to achieve the above object, a photosensitive material cutting apparatus according to the present invention has a chip removing mechanism for removing chips generated by cutting from the vicinity of a blade by an air current. It is characterized by being provided.

[0006] In order to have such a characteristic configuration,
In the photosensitive material cutting device according to the first aspect of the present invention, even if chips are generated from the photosensitive material at the time of cutting, the chips are removed from the vicinity of the blade by an air current flowing out from a chip removing mechanism provided in the photosensitive material cutting device. Therefore, the chances of chips being attached to the cut sheet-shaped photosensitive material are reduced, and as a result, the burden of inspection and chip removal work in the next process is reduced.

[0007] Further, if the blade has a pair of fixed blades spaced apart from each other and a movable blade that enters into a gap between the pair of fixed blades, both front and rear of the sheet-shaped photosensitive material are provided. The product value is increased without curling at any of the ends, but on the other hand, strong shearing caused by a pair of fixed blades and movable blades, curling spirally with the same width as the gap between a pair of fixed blades Chips that are easily attached to a nearby object charged with high voltage static electricity based on stress are likely to be generated. However, if the chip removing mechanism is configured to include an airflow outlet arranged so that the airflow advances from the base end side to the distal end side of the movable blade, the chip easily sticks to these nearby objects. Debris is also reliably removed.

Further, a static eliminator for generating an ion pair capable of eliminating static electricity and mixing the ion pair into an air flow may be provided. According to this structure, the ion pair is supplied to the vicinity of the blade and the chip along with the air flow, neutralizing the electrostatic charge charged on the surface thereof, and as a result, the chip is removed from the vicinity of the blade. The ability is further improved.

[0009] Discharge means for releasing static electricity charged on the tip of the movable blade or the chips may be provided on a path along which the tip of the movable blade moves upon cutting. With this configuration, the tip of the movable blade, which is considered to be the place where the static electricity is most likely to be charged, comes into contact with the discharging means in accordance with the movement of the movable blade accompanying the cutting, and the movable blade is moved every time the movable means is moved. Is discharged to the outside via the discharging means, and as a result, chips are less likely to adhere to the movable blade.

As a specific example of the discharging means, an organic conductive fiber which is deformed by an air flow supplied from an air flow outlet and pressed against a movable blade may be used. With this configuration, the organic conductive fiber is pressed against the movable blade by the airflow, so that the electric charge on the movable blade is more reliable than the case where the movable blade and the organic conductive fiber are simply in contact with each other via the organic conductive fiber. Now escape to the outside.

Further, a guide member for guiding the air flow supplied from the air flow outlet to the vicinity of the tip of the movable blade may be provided, and the organic conductive fiber may extend from the guide member.

[0012] Other features and advantages of the invention include:
The description will become apparent from the description of the embodiment using the drawings.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an entire photographic processing apparatus for printing an image on photographic paper based on analog image information of a light transmission type original such as a negative film or digital image information of a floppy disk or other recording medium. The configuration of the photographic processing apparatus is roughly divided into a printer unit 1 for printing a photographic paper 3 which is an example of a photographic photosensitive material, and a processor unit 2 for performing processing such as development on the photographic paper 3 after the printing. Consists of

The printer unit 1 includes a supply unit 5 for supplying the photographic paper 3 drawn from the photographic paper magazine 4 along a transport path, a loading unit 6 for transporting the photographic paper 3 to the printing exposure unit 7, A transmitted light exposure unit 7 for printing and exposing an image on the photographic paper 3 based on the analog image information described above, an advance unit 8 for accurately transporting the photographic paper 3 by a predetermined length, and, if necessary, A digital exposure unit 9 for printing an image or characters based on the digital image information, and a photographic paper transport unit 10 capable of forming a loop R for adjusting the speed of the photographic paper 3 sent to the processor unit 2
A sending unit 12 for sending the photographic paper 3 to the processor unit 2;
In addition, an outlet 13 is provided.

The processor section 2 includes a developing section 14 for performing processing such as color development and fixing on the photographic paper 3, a drying section 15 for drying the photographic paper 3 after the development processing, and a photographic paper 3. And a loop forming unit 17 that can form a loop R to absorb a difference in processing speed between the drying unit 15 and the cutter unit 16. The cutter unit 16 includes a cutting device 30 that cuts the printing paper 3 into sheet-like prints 18, and a carry-in roller 24.
And a carry-out roller 25. Print 18
Is discharged from the discharge port 27 and mounted on the conveyor 26. Below the cutting device 30, a chip storage box 19 for collecting chips 3a generated when the photographic paper 3 is cut into sheet-shaped prints 18 is provided.

(Structure of Photosensitive Material Cutting Apparatus) As shown in FIG. 2, a cutting apparatus 30 includes a frame-shaped main body 32, a lower blade 34 fixed to the main body 32, and a vertical blade with respect to the lower blade 34. It has an upper blade 36 (an example of a movable blade) supported so as to be relatively movable. The lower blade 34 and the upper blade 36 extend in the width direction of the supplied photographic paper 3. In addition, in the main body 32,
An input shaft 42 is rotatably supported, and an input gear 44 is fixed to one end of the input shaft 42. Also, eccentric cams 46 having a circular outer shape are provided at predetermined positions on the left and right of the input shaft 42.
Are mounted so as to be integrally rotatable, and a drive arm 48 is externally fitted around the circular outer periphery of each eccentric cam 46 serving as a kind of crank so as to be relatively rotatable. A drive rod 40 extending left and right from a block-shaped holding member 38 holding the upper blade 36 is fixed near the upper ends of the pair of left and right drive arms 48. Further, the main body 32 is formed with a long hole 32a for restricting the moving range of the drive rod 40 to a vertical line segment. Therefore,
If a rotational driving force of a motor (not shown) rotates the eccentric cam 46 in one direction via the input gear 44, this rotational force is driven through a circular sliding motion between the eccentric cam 46 and the driving arm 48. This is converted into a vertical reciprocating motion of the rod 40, and as a result, the upper blade 36 moves up and down with respect to the lower blade 34.

As best shown in FIG. 3, the lower blade 34
A pair of blades 34 separated in the supply direction of the photographic paper 3 to be cut
a and 34b. As shown in FIGS. 4A and 4B, the cutting edge of the upper blade 36 enters the space between the pair of blades 34a and 34b with the vertical movement, thereby cutting the printing paper 3 by a shearing action. Thus, a sheet-like print 18 is obtained. At the time of this cutting, a pair of blades 34
From the photographic paper 3, chips 3 a having a separation width between a and b, in other words, a width corresponding to the thickness of the upper blade 36 and a length corresponding to the width of the photographic paper 3 are generated. As can be understood from FIG. 2, the lower end portion of the upper blade 36, that is, the cutting edge, has a shape that is inclined in a front view so that the cut proceeds from one end to the other end in the width direction of the printing paper 3. . The chips 3a generated at the time of the cutting are the obtained prints 18,
Uncut rolled photographic paper 3 or blade (upper blade 36,
The lower blades 34a and 34b are easily attached to the lower blades 34a and 34b (the above-mentioned adhesion is presumed to be due to the action of static electricity generated based on friction between the blade and the printing paper). Print 18 obtained
When the chips 3a adhere to the photographic paper 3 and are conveyed as they are by the conveyor 26 together with the prints 18 and are removed at the time of the final inspection, there is a cost for removing the chips 3a. Print 1 during cutting operation
8 and must be removed during inspection. Therefore, the cutting device 30 of the present invention includes an airflow outlet 50 formed in the upper end of the frame-shaped main body 32 and a compressed air generator (not shown) for supplying the compressed gas to the airflow outlet 50. ) Is provided. During the cutting operation, an airflow such as air continuously blows downward from the airflow outlet 50, and the upper blade 36 or the lower blade 3
The chips 3a can be blown off from the vicinity of 4a, 34b (an example of a blade). The airflow outlet 50 is connected to the upper blade 36.
A plurality of airflow outlets 50 are circular through-holes having a circular inner peripheral surface and extending vertically. The vertically extending central axis of the airflow outlet 50 is
The holding member 38 extends so as to substantially coincide with the vertical side surface of the holding member 38 that holds the upper blade 36. That is, since the chips 3 a are practically most easily attached to the tip of the upper blade 36, the airflow ejected from the airflow outlet 50 first descends linearly along the side surface of the holding member 38, and then moves upward. It is drawn to the side surface of the blade 36 and advances from the base end side to the distal end side of the upper blade 36, and efficiently removes the chips 3a attached to the distal end of the upper blade 36. The airflow that has passed the tip of the upper blade 36 while efficiently removing the chips 3a is transferred to the chip storage box 19 via the gap between the pair of blades 34a and 34b with the chips 3a. It is configured to head.

Since the chips 3a are considered to adhere to the blade (the upper blade 36 or the lower blades 34a, 34b) mainly due to static electricity, the charged state of the chips 3a or the blade is eliminated. The adhesion rate of the chips 3a can be reduced, or the removal efficiency of the chips 3a can be further increased. One of the methods for eliminating the charged state is a method in which an ion pair capable of removing static electricity is mixed into the airflow and then sprayed near the blade. For this purpose, for example, a static eliminator for generating ion pairs may be interposed between the compressed air generator and the airflow outlet 50. The ion pair supplied to the vicinity of the blade through an air flow neutralizes a positive charge or a negative charge unevenly distributed on the blade or the chip with a charge having an opposite characteristic. As the static eliminator, a voltage applying type, particularly an AC corona discharge type, may be used. This removing machine is composed of a needle electrode extending from a high voltage line and a ground electrode arranged so as to surround the tip of the needle electrode. The needle electrode and the ground electrode can ionize air molecules present in the vicinity and generate ion pairs required for static elimination.

[Other Embodiments] <1> Next, another method for eliminating the charged state will be described. The film cutting device shown in FIG. 5 includes a guide member 52 for reliably guiding the airflow supplied from the airflow outlet 50 to the vicinity of the tip of the upper blade 36. The guide member 52 has a plate shape extending generally in the lateral direction from the main body 32, and a part thereof forms a slope extending downward to form a guide surface 52 a for concentrating the airflow near the tip of the upper blade 36. Make up. Further, the end 52b of the guide member 52 that finally extends horizontally faces the movement path of the end of the upper blade 36 that reciprocates up and down. In other words, the tip 52b of the guide member 52 is located within the range of the movement process of the tip of the upper blade 36. And this tip 5
2b is provided with a discharging means 54 capable of discharging an electrostatic charge into the air. As the discharging means 54, a means formed by shaping a small amount of organic conductive fibers between ordinary cellulose fibers to form a discharge paper can be used. The discharge paper may be stuck to the tip 52b with an adhesive tape or the like having an adhesive layer on both sides (the electrostatic charge is very small, and air is directly discharged from the surface of the organic conductive fiber which is likely to cause corona discharge. It is not necessary for the adhesive tape to have electrical conductivity, since it is discharged during). This organic conductive fiber is a method of coating the surface of the organic fiber with a highly conductive metal such as copper by plating or vacuum evaporation, or by infiltrating the acrylic fiber with copper sulfide by using a dyeing technique, and then using the copper sulfide. Is a flexible fibrous material made by a method of metallizing. Each time the upper blade 36 reciprocates up and down for cutting, the tip of the upper blade 36 comes into frictional contact with the organic conductive fiber provided on the tip 52b of the guide member 52. The discharge occurs at the moment when the posture of the organic conductive fiber present in a small amount changes during the period and the degree of close contact with the upper blade 36 increases), and the electric charge charged on the upper blade 36 is efficiently discharged into the air. . Alternatively, a change in the attitude of the organic conductive fiber as described above may be caused by the airflow supplied from the airflow outlet 50. That is, here, the organic conductive fibers present in a small amount between the cellulose fibers are pressed by the airflow into the upper blade 36, and the required discharge occurs at the moment when the close contact between the two is increased by the pressing.

<2> As shown in FIG. 6, a discharge means 54 (organic conductive fiber or discharge paper containing organic conductive fiber) similar to that shown in FIG. 5 is provided in the cavity inside the lower blade 34. It is also possible to provide such that each time the upper blade 36 enters the inside of the lower blade 34, it comes into contact with these discharging means 54.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the overall configuration of a photographic processing apparatus.

FIG. 2 is a perspective view showing a main part of the cutting device.

FIG. 3 is a partially cutaway side view of the cutting device of FIG. 2;

FIG. 4 is a partially broken side view similar to FIG. 3 for showing a cutting action by the cutting device of FIG. 2;

FIG. 5 is a cutaway side view showing another embodiment of the cutting device.

FIG. 6 is a cutaway side view showing still another embodiment of the cutting device.

[Explanation of symbols]

 Reference Signs List 3 photographic paper 3a chip 18 print 19 chip storage box 30 cutting device 34 lower blade 36 upper blade 50 air flow outlet 54 discharge means

Claims (6)

[Claims] 1. A photosensitive material cutting device for cutting a photosensitive material with a blade, comprising a chip removing mechanism for removing chips generated by the cutting from the vicinity of the blade by an air current. 2. The cutting tool has a pair of fixed blades that are spaced apart from each other and a movable blade that enters a gap between the pair of fixed blades. 2. The photosensitive material cutting device according to claim 1, further comprising an air flow outlet disposed so as to advance from a base end side to a distal end side of the movable blade. 3. The photosensitive material cutting device according to claim 1, further comprising a static eliminator for generating an ion pair capable of eliminating static electricity and mixing the ion pair into the airflow. 4. The movable blade according to claim 2, wherein a discharge means for discharging static electricity charged on the tip of the movable blade or a chip is provided on a path along which the distal end of the movable blade moves during the cutting. Photosensitive material cutting equipment. 5. The photosensitive material cutting apparatus according to claim 4, wherein the discharging means is made of an organic conductive fiber which is deformed by an air flow supplied from the air flow outlet and pressed against the movable blade. 6. A guide member is provided for guiding the airflow supplied from the airflow outlet to the vicinity of a tip of the movable blade, and the organic conductive fiber extends from the guide member. The photosensitive material cutting device according to claim 1.