JPS62239156A - Cutter for printing sheet - Google Patents

Abstract

PURPOSE:To easily cut a printing sheet having round corners to prescribed dimensions with a simple constitution by cutting the long-sized printing sheet to a prescribed width by rotary edges and cutting it in the transverse direction by an edge which has both ends bent and moved reciprocally. CONSTITUTION:A sent long-sized printing sheet 14 is cut to transverse dimensions W by a pair of rotary edges 12 and is cut in the direction orthogonal to rotary edges by a reciprocally movable edge 70 which has both end parts 74A which are bent, thus obtaining the printing sheet 18 having round corners. The reciprocally movable edge 70 is replaced for the change of the size W. Thus, the printing sheet having round corners are easily cut to prescribed dimensions.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention involves printing and developing images in succession on photographic paper that is cut into a predetermined size from a long photographic paper, and then cutting each image separately. There are many products that have been commercialized.

After development, long photographic paper is generally cut by a combination of a fixed blade and a movable blade in order to cut each image.

With a cutter that has a cutting line only in the direction perpendicular to the longitudinal direction of long photographic paper, the cutting line is almost a straight line, but if the cutter has a predetermined vertical and horizontal dimension and round corners, In order to obtain cut photographic paper with an image portion smaller than the width dimension, a fixed blade for punching out the entire periphery of the photographic paper and an annular movable blade into which the fixed blade is inserted are required. This cutter has a large fixed blade and a movable blade that fit into each other, and the setup at the time of installation is complicated, resulting in an increase in costs.

The present invention takes the above-mentioned facts into consideration, and even when cutting an image from a long piece of photographic paper into a cut photographic paper having predetermined vertical and horizontal dimensions and round corners, the present invention cuts the photographic paper in a uniform structure. The purpose is to obtain a cutter for photographic paper that can

[Summary and operation of the invention]

The photographic paper cutter according to the present invention includes a rotary blade for cutting long photographic paper into a predetermined width, and a cutting line perpendicular to the cutting direction of the rotary blade. It is characterized by having a reciprocating blade that intersects with the cutting line.

The rotary blade and the reciprocating blade of the present invention are used sequentially to cut a long photographic paper, but either one may be used first, and after cutting the long photographic paper to a predetermined width with the rotary blade, they are orthogonally cut. Alternatively, a reciprocating blade may be used to cut the photographic paper in the perpendicular direction first, and then the photographic paper is cut to a predetermined width to cut the photographic paper. may be formed.

The rotating blade cuts the photographic paper into a predetermined width, and the reciprocating blade cuts the photographic paper in the orthogonal direction, and both ends of the orthogonal cut section bend to intersect with the cutting line made by the rotary blade, so that the The photographic paper has round corners, and a cut photographic paper having a width dimension cut by the rotary blade and a length cut by the reciprocating blade is produced.

Note that a cutting method using a reciprocating blade with arcuate sections at both cutting ends has been proposed (Japanese Patent Publication No. 17351/1983).
This is for cutting only in the direction orthogonal to the longitudinal direction of photographic paper, and is not a configuration for obtaining cut photographic paper of a predetermined width and length from a long photographic paper as in the present invention.

[Embodiments of the invention]

FIG. 1 shows a schematic diagram of cutting a photographic paper 10 according to an embodiment of the present invention.
4 to a predetermined width (dimension W) with a rotary blade 12, and then cut into a predetermined length (dimension L) with a reciprocating blade 16, thereby obtaining cut photographic paper 18.

FIGS. 2 and 3 show a schematic configuration of this embodiment.

In FIG. 2, the photographic paper after the image has been printed and has undergone a developing and drying process is lifted up through guide plates 20 and 22 as indicated by arrow A. The leading end of the long photographic paper 14 lifted up by these guide plates 20 and 22 is held between a roller 24 and a guide heald 26 shown in FIG. It is now possible to This roller 24 is fixed to the center of a shaft 34 which is supported at both ends by bearings 32, and the guide belt 26 is connected to the shafts 36, 38, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 34, 36, 36, 36, 36, 36, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, and 34, respectively, which are supported at both ends by bearings 32.
The photographic paper is wrapped around rollers 42, 44, and 46, which are fixed to rollers 40 and 40, respectively, and is pressed between the rollers 42 and 44 to the outer circumference of the roller 24. 14 between horizontal guide plates 28 and 30. Rollers 42 to 46 are belt 2
6 is connected to a motor (not shown).

As shown in FIG. 3, a pair of discs 48 are attached adjacent to the roller 24 on both sides of the roller 24. The discs 48 are fixed to the shaft 34 with screws 5o. By changing the tightening position of the screw 5o, the span can be changed to accommodate changes in the width W of the cut photographic paper 18.

The outer peripheral end surface of the disc 48 serves as a guide surface 52, which serves as a contact surface for the rotary blade main body 54. This rotary blade body 5
Reference numeral 4 has a disk shape, and is rotatably supported on a shaft 56 so as to be movable in the axial direction. As shown, a slit-shaped cut surface with a dimension W is formed in the middle part of the long photographic paper 14.

The shaft 56 is supported by a bearing 58, and a compression coil spring 60 interposed between the shaft 56 and a support plate 60 fixed to the middle portion of the shaft 56 presses the outer periphery of the rotary blade body 54 against the guide surface 52. It is designed to generate power.

A gear 64 fixed to the disk 48 meshes with a gear 66 fixed to the rotary blade body 54, so that the disk 48 and the rotary blade body 54 rotate at the same rotation speed and in opposite directions.

A sprocket wheel 68 is fixed to the shaft 34, so that the rotational force of a motor (not shown) is transmitted via a chain.

The reciprocating blade 16 disposed downstream of the rotary blade 12 is a movable blade 70
and a fixed blade 72.

As shown in FIG. 4, the movable blade 70 is configured so that the cutting surface 74 gives the long photographic paper 14 a cutting line perpendicular to the longitudinal direction of the long photographic paper 14, that is, perpendicular to the cutting line by the rotary blade 12. It has become. Both ends 74A of this cut surface 74 are bent in an approximately 1/4 arc, and these bent ends are connected to the rotary blade 12.
It is now aligned with the cutting line. For this reason, the cut photographic paper 18 after being cut has a shape with 1/4-arc bends at the four corners.

A mounting arm 76 protruding from the movable blade 70 is fixed to an actuator 82 of a solenoid 80 with a screw 78.

Therefore, the solenoid 80 can drive the movable blade 70 in the direction of arrow B in FIG.

On the other hand, the fixed blade 72 has a block shape with a cutting surface 84 that engages with the cutting surface 74 of the movable blade 70, as shown in FIG.

Accordingly, the movable blade 70 of the reciprocating blade 16 engages with the fixed blade 72 by the operation of the solenoid 80, and cuts off the diagonally shaded portion shown in the middle of the long photographic paper 14 as shown in FIG.

Rollers 86, 88 and a guide plate 90 for guiding the cut photographic paper 18 after cutting are arranged downstream of the reciprocating blade 16, so that the cut photographic paper 18 is sent out in the direction of arrow C.

Next, the operation of this embodiment will be explained.

As shown by arrow A in FIG. 2, when the long photographic paper 14 after baking and drying is lifted up through the guide plates 20 and 22, its leading end is held between the roller 24 and the guide belt 26. Redirected horizontally. Here, the long photographic paper 14
In the rotary blade 12, the disc 48 and the rotary blade main body 54 engage with each other to form a slit-shaped cut surface having a widthwise dimension W. Since the cut ends should be discarded, they are appropriately discharged, but they may be wound up separately and then discarded.

When the long photographic paper 14 with both ends cut off reaches the reciprocating blade 16, a detector (not shown) detects a cut mark made on the photographic paper at a position corresponding to the image position, and an image is formed. The movable blade 70 of the reciprocating blade 16 moves back and forth according to the position and meshes with the fixed blade 72. As a result, the shaded portion shown in FIG. 1 is cut off, and a cut photographic paper 18 having round corners is completed. This cut photographic paper 18 is then guided by rollers 86, 88 and guided by a guide plate 90.
It is taken out after passing through.

Further, in order to change the shape equivalent to punching, it is sufficient to replace the rotary blade with a reciprocating blade of a different size in accordance with the change in cutting width of the rotary blade.

Although the above embodiment shows a structure in which the rotary blade main body 54 corresponds to the guide plate 52 of the disc 48 in order to provide a slit-shaped cut surface to the long photographic paper 14, the present invention provides a cutting method using a rotary blade. Any configuration other than this may be used as long as it provides the following.

〔Effect of the invention〕

As explained above, in the present invention, long photographic paper is cut by a combination of a rotary blade and a reciprocating blade, so it is advantageous in that it is possible to obtain cut photographic paper with round corners and a predetermined size with a simple structure. It has a positive effect.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view showing a cut state according to an embodiment to which the present invention is applied, Fig. 2 is a side view of the embodiment, Fig. 3 is a sectional view taken along the line m-m in Fig. 2, and Fig. 4 is a It is a top view showing a moving blade. 12... Rotating blade, 14... Long photographic paper, 16... Reciprocating blade, 18... Cutting photographic paper, 48... Disc, 54... Rotating blade body, 70...・Moving blade, 72...Fixed blade,

Claims (2)

[Claims] (1) A rotary blade that cuts long photographic paper into a predetermined width, and a reciprocating blade that has a cutting line perpendicular to the cutting direction of the rotary blade, with both ends of this cutting line bent to intersect with the cutting line of the rotary blade. A photographic paper cutter characterized by having the following. (2) The photographic paper cutter according to claim 1, wherein the rotary blade can be set to different predetermined widths, and the reciprocating blade can be replaced with a different size.