JPH07291297A - Continuous sheet and cutter for the same - Google Patents

Abstract

PURPOSE:To easily and reliably cut a continuous sheet along perforations by setting distances between respective cuts on the perforations of the continuous sheet to distances different widthwise with respect to a widthwise tension distri bution. CONSTITUTION:A continuous sheet 9 is cut into paper leaves along continuous perforations l widthwise by applying tension to its lengthwise direction. In this case, distances between cuts on the perforations 1 are set. to distances different widthwise with respect to a widthwise tension distribution. The distances between the respective cuts are set so that they are coarse at the center in a widthwise direction of the sheet and dense at both ends, whereby both ends can be more easily cut than the central part. A cutter is equipped with an entrance roller pair 3 and an exit roller pair 4 on a carrying path of the continuous sheet 9 while a relative velocity of the exit rollers 4 is set at a high speed, thereby generating tensile force for cutting the continuous sheet by difference in carrying speeds.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous sheet having perforations for separating in the width direction, such as fanfold paper for a computer, which can be easily separated by a separating device using tension, and also to such a continuous sheet. Regarding the disconnecting device.

[0002]

2. Description of the Related Art The force required to separate continuous paper at perforations decreases when the perforated portion (hereinafter referred to as "cut") is long, and increases when the connected portion (hereinafter referred to as "tie") is long. . Conventionally, perforations to be put on continuous paper are put so that ties and cuts are uniform.

[0003]

When such a sheet is to be separated by the continuous sheet separating device, the separating force of the device (hereinafter referred to as a cutting force) is not uniform in the width direction, so that the sheet is partially separated. Sometimes there is not. For example, the continuous paper separating device previously proposed by the applicant (Japanese Patent Application No.
No. 307817), the roller is configured to separate the sheet by applying maximum tension to the center of the sheet in the width direction, so that the cutting force on both sides is weaker than that in the center of the sheet in the width direction. Paper with a long length and short cuts may not cut to both ends. On the contrary, in many of the conventional continuous paper separating devices, the paper may not be separated because the cutting force at the central portion is weaker than that on both sides.

Further, since perforated paper having a short tie and a long cut in the entire width direction is easily cut, if some tension is applied to the paper in the printer or the continuous paper separating device, it is not desired to separate the paper. It will be separated.

The present invention has been made in view of the above points, and it is an object of the present invention to provide continuous paper which is easy to cut by a continuous paper separating device and which is not easily separated by other departments.
Furthermore, a separating device suitable for such continuous paper is provided.

[0006]

That is, the present invention relates to a continuous sheet which can be separated into sheets along a perforation continuous in the width direction of the sheet by applying a predetermined tension in the longitudinal direction of the sheet. The intervals between the cut portions of the perforations are different in the width direction corresponding to the tension distribution in the width direction.

Particularly, the intervals between the cut portions are set so that the central portion in the width direction of the sheet is rough and the both side portions are dense so that both side portions are more easily cut as compared with the central portion in the width direction of the sheet, or The spacing between the cut portions is set so that the widthwise central portion of the paper is
It is characterized in that both side portions are roughened so that the central portion in the width direction of the paper is easily cut with respect to the both side portions.

Furthermore, in the separating device suitable for the paper according to the present invention, the intervals between the cut parts are close in the widthwise central part,
The conveyance path for a continuous sheet having perforations whose both sides are rough has means for abutting the central portion in the width direction of the continuous sheet to apply tension in the longitudinal direction of the sheet, and particularly, the means for applying the tension. Is composed of a braking means for braking the rear side of the continuous sheet and a narrow roller for forcibly conveying the continuous sheet in the front side.

[0009]

As described above, according to the present invention, the intervals between the cut portions of the perforations are cut off so that the intervals are different in the width direction corresponding to the tension distribution in the width direction of the device, so that the cuts are reliably cut according to the tension. Therefore, unlike the above-mentioned conventional paper, there is no trouble such as inadvertent cutting in a department other than the cutting device or mistake in cutting, and the paper is cut off only at a predetermined position of the cutting device.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows an example of continuous paper according to the present invention, and FIG. 2 shows a conventional continuous paper. As shown in FIG. 2, in the conventional continuous paper, the widthwise perforations 1 are cut and tied at equal intervals in a uniform relationship, and such a paper may be cut by the cutting device as described above. However, there was a mistake in separation. On the other hand, as shown in FIG. 1, in the continuous paper according to the present invention, the intervals between the cut portions of the perforations in the width direction are set to different intervals in the width direction corresponding to the tension distribution in the width direction by the separating device. Become. In the example shown in the figure, the spacing between the cut portions for the separating device having a strong tension in the widthwise center is such that the widthwise central portion of the paper is rough and the both sides are dense so that the widthwise sides of the sheet are smaller than the widthwise central portion. However, for a separating device with high tension on both sides in the width direction, on the contrary, the spacing between the cut portions is set to be dense in the widthwise central portion of the paper.
Both side portions are roughened so that the central portion in the width direction of the paper is easily cut with respect to the both side portions.

FIG. 3 shows an example of a separating device suitable for separating continuous paper according to the present invention. The illustrated apparatus is configured to have a strong cutting force in the widthwise central portion of the paper, and is suitable for use with continuous paper having perforations in which the widthwise central portion is dense and the both sides are rough. To be done. The continuous sheet 9 conveyed from the left side to the right side in the drawing is conveyed by a pair of inlet rollers 3 and a pair of outlet rollers 4 arranged at appropriate intervals in the conveying path. These roller pairs 3 and 4 are composed of relatively narrow rollers located in the center of the paper in the width direction, and are set so that the transport speed of the exit roller pair 4 is faster than the transport speed of the paper by the entrance roller pair 3. Has been done. As a result, when the leading end side of the continuous paper is eaten by the exit roller pair 4, a tension that tends to separate the paper is generated at the widthwise central portion of the paper due to the difference in transport speed with the entrance roller pair 3.

FIG. 4 shows such a tension distribution. Reference numerals 6, 7, and 8 denote sheet guides, and 5 denotes a brake that suppresses the sheet by an appropriate pressure. A dotted portion 10 and a horizontal line portion 1
1 and the shaded portion 12 show the distribution of tension by the brake 5, the paper guides 6, 7, and 8, the inlet roller pair 3, and the outlet roller pair 4, respectively. The tension in these shaded portions 12 is much higher than that in the other portions 10 and 11, and therefore the perforations of the paper used in this device will not be cut off by making the perforations on both sides large. The edge of the paper is cut off.

If the perforation is cut to a large extent in the widthwise direction of the paper, the break 3 and the entrance roller pair 1
The paper is cut off between them and the paper is not conveyed. On the other hand, if the paper shown in FIG. 1 is used, the paper will not be cut between the brake 3 and the entrance roller 1, but at a predetermined position, that is, between the entrance roller 1 and the exit roller 2. I was able to achieve the separation by cutting with.

In FIG. 5, (A) is a vertical perforation line for sawing for manually cutting off the "(receipt)" part from "(retail shop copy)" after cutting work, and (B) cutting off the major part. The major vertical perforations, (C), (D) and (E), are horizontal perforations. The anti-high-strength transverse perforations (C) are provided with a different perforation than the anti-low-tensile transverse perforations (D) and (E). (D) and (E) are the same perforations. The position of (C) is the center of the paper, but when the major portion is cut off before the cutting operation, the center of the paper is the width of the paper minus the width of the major portion and is halved. .

Initially, the transverse sewing machines (C), (D), and (E) were all cut with 4.0: 0.5 mm, but between the brake 3 and the entrance roller pair 1. The paper has been cut off. Therefore, when (C) was set to 1.75: 0.5 mm as in this example, good results could be obtained. Further, as a result, good results could be obtained during the paper manufacturing process and during the printer operation.

[0016]

As described above, by providing perforations as in the present invention, even if there is a defect in the separating ability due to the structure or principle of the continuous sheet separating device, the sheet can be reliably separated.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of perforations of continuous paper according to the present invention.

FIG. 2 is a view showing how to perforate a conventional continuous paper.

FIG. 3 is a diagram showing an example of a continuous paper separating device.

FIG. 4 is a diagram showing a tension distribution on a sheet by the separating device of FIG.

FIG. 5 is a diagram showing an example of a sheet to which the present invention has been applied.

[Explanation of symbols]

 1 Perforation according to the present invention 2 Conventional perforation 3 Inlet roller pair 4 Outlet roller pair 5 Brake 6, 7, 8 Paper guide 9 Continuous paper (A) Horizontal perforated sewing machine (B) Marginal Longitudinal sewing machine (C) Anti-high tension horizontal sewing machine (D) Anti-low tension horizontal sewing machine (E) Anti-low tension horizontal sewing machine

Claims (5)

[Claims] 1. A continuous sheet which can be separated into sheets along a perforation continuous in the width direction of the sheet by applying a predetermined tension in the longitudinal direction of the sheet, and between the cut portions of the perforations. A continuous paper, wherein the intervals are different in the width direction corresponding to the tension distribution in the width direction. 2. The spacing between the cut portions is such that the central portion in the width direction of the paper is coarse and both side portions are dense so that both side portions are more easily cut as compared with the central portion in the width direction of the paper. The continuous paper according to claim 1, which is characterized in that. 3. The spacing between the cut portions is characterized in that the widthwise central portion of the paper is dense and both side portions are rough so that the widthwise central portion of the paper is easily cut to both sides. The continuous paper according to claim 1. 4. The space between the cut portions is dense in the widthwise central portion,
A continuous sheet separating device, comprising means for applying tension to a longitudinal direction of a sheet by abutting a central portion in the width direction of the continuous sheet on a conveyance path of the continuous sheet having perforations whose both sides are rough. 5. The continuous sheet separating device according to claim 4, wherein the means for applying tension comprises a braking means for braking the rear side of the continuous sheet and a narrow roller for forcibly conveying the continuous sheet at the front side. .