JP2006256779A - Rolled paper cutting device, rolled paper supplying device, and image forming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To collect efficiently the cutting dust of paper sheets generated when a rolled paper is cut by a cutter unit. <P>SOLUTION: The arrangement includes a paper dust collecting device 500 to collect the paper dust generated by the cutter unit cutting the rolled paper. The paper dust collecting device 500 is equipped with a dust collecting nozzle 501 arranged adjacent to a stationary cutting blade 103, a dust sucker 503 to suck the paper dust, and a dust transporting pipe 502 to couple the nozzle 501 with the dust sucker 503, wherein the cutter unit 101 is kept operating only during cutting the rolled paper. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a roll paper feeding device and a roll paper cutting device used in an image forming apparatus such as a copying machine, a printer, and a facsimile machine.

  As an image forming apparatus, an ink jet image forming apparatus that forms an image by ejecting ink onto a recording medium such as recording paper that is conveyed in a predetermined conveying direction, or an electrophotographic image forming that forms an image using toner The device is known. Among these image forming apparatuses, there is a type in which a long recording medium (roll paper) wound in a roll shape is transported in a predetermined transport direction to form an image on the roll paper.

  In general, this type of image forming apparatus incorporates a roll paper cutting device that cuts a recording medium while traveling in a direction perpendicular to the transport direction. The cutting device has a cutter that contacts the recording medium and cuts the recording medium, and the recording medium is cut to a predetermined size by the cutter.

As an image forming apparatus using such roll paper, there is one described in Patent Document 1. This is because a sheet material conveying device having a pair of registration rollers, a registration sensor, an intermediate sensor, a pair of immediately preceding conveying rollers, and the like is provided below the photosensitive member, and a pair of immediately preceding conveying rollers including a driving roller and a driven roller. The drive roller is supported via a torque limiter.

  Also, in such a roll paper cutting device, paper powder and scraps are often generated when the roll paper is cut with a cutter. Such paper dust or the like may adhere to the roll paper. In this case, the image is degraded.

  As a method for removing such paper dust or the like, Patent Document 2 describes a method of removing paper dust attached to a roller by pressing a brush against a conveyance roller or the like. That is, in the technique of Patent Document 2, rollers are fixed to both ends in the longitudinal direction of the shaft, and an adsorbing member that adsorbs paper dust or paper chips is configured as an elastic body that presses roll paper, and a cutting device When cutting roll paper with this cutter, the roller and the suction member are used to press the vicinity of the part to be cut.

JP 2003-312887 A JP 2002-72594 A

However, in the above conventional technique, the paper dust adhering to the roll paper is only adsorbed by the adsorbing member, so the paper dust may not be sufficiently removed. In this case, the paper dust is attached to the roll paper. Therefore, there is a problem that the image is conveyed to the image forming apparatus unit.

  SUMMARY An advantage of some aspects of the invention is that it provides a roll paper cutting device, a roll paper supply device, and an image forming apparatus that can satisfactorily collect paper dust generated by cutting roll paper with a cutter unit.

  The invention according to claim 1 is a roll paper cutting device comprising a cutter unit for cutting the roll paper fed from the roll paper feeding means, and collects paper dust generated when the cutter unit cuts the roll paper. It is a roll paper cutting device provided with paper dust collection means.

  According to a second aspect of the present invention, in the roll paper cutting device according to the first aspect, the cutter unit includes a fixed blade and a movable blade, and the paper dust collecting means is disposed adjacent to the fixed blade of the cutter unit. And having a dimension corresponding to the maximum sheet passing width of the roll paper.

  According to a third aspect of the present invention, in the roll paper cutting device according to the first or second aspect, the paper dust collecting means is configured integrally with the cutter unit.

  According to a fourth aspect of the present invention, in the roll paper cutting device according to the first to third aspects, the paper dust collecting means is detachable from the cutter unit.

  According to a fifth aspect of the present invention, in the roll paper cutting device according to any one of the first to fourth aspects, the paper dust collecting means has a paper dust suction means for sucking the collected paper powder. .

  According to a sixth aspect of the present invention, in the roll paper cutting device according to the fifth aspect, the paper powder suction means performs a suction operation only during a period in which the cutter unit is cutting the roll paper.

  A seventh aspect of the present invention is a roll paper supply device comprising the roll paper cutting device according to any one of the first to sixth aspects.

  According to an eighth aspect of the present invention, there is provided an image forming apparatus comprising the roll paper feeding device according to the seventh aspect.

  According to the present invention, paper dust generated by cutting roll paper with a cutter unit can be recovered satisfactorily, and thus good image formation can be performed.

  The best mode for carrying out the present invention will be described below with reference to the embodiments shown in the drawings.

  Hereinafter, embodiments of a roll paper cutting device, a roll paper supply device, and an image forming apparatus according to the present invention will be described with reference to the drawings. 1 is a side view showing an image forming apparatus according to the embodiment, FIG. 2 is a side view showing a roll paper cutting device used in the image forming apparatus shown in FIG. 1, and FIG. 3 is an image forming apparatus shown in FIG. It is a side view which shows the roll paper cutting device used for.

  In this example, the image forming apparatus 10 stores two roll papers 21 and 22, a roll paper supply device 20 including a roll paper cutting device 100, a document reading device 30, an image forming device unit 40, a fixing device. A unit 50 and a paper discharge unit 60 are provided.

In this example, the roll paper supply device 20 is provided with a pair of paper feed rollers 23, and the recording paper from the roll papers 21 and 22 is conveyed to the roll paper cutting device 100 and cut into a predetermined length of recording paper. Is done. In this example, the image forming apparatus 40 is of an electrophotographic type and forms a toner image on the recording paper. The fixing unit 50 heat-fixes the recording paper on which the toner image is formed, and 60 discharges the fixed recording paper to the paper discharge unit 70. The roll paper cutting device 100 includes a cutter unit 101 having a cutting blade and a length measurement sensor 102 for measuring the length of the roll paper to be cut.

  In this example, as shown in FIG. 3, the roll paper cutting apparatus 100 includes a cutter unit 101 that includes a fixed blade 103 and a movable blade 104, and a paper dust collection container 200 that is a paper dust collection unit. . Further, the roll paper cutting device 100 includes drive rollers 105 and 106 between the cutter unit 101 and the length measurement sensor 102.

  In this example, the paper dust collection container 200 is a member on a box that is attached to the main body of the cutter unit 101 with a bolt 201, and an opening end thereof is disposed adjacent to the fixed blade 103 of the cutter unit 101, A dimension corresponding to the maximum sheet passing width is provided.

  In this example, the roll paper supply device 20 receives the length of the original D read by the original reading device 30 or the set length, and the roll paper is fed by the paper feed roller pair 23 of the designated roll paper feed stage. For example, one of the roll papers 21 and 22 is conveyed toward the roll paper cutting device 100 at a speed of, for example, 60 mm / s. The lengths of the conveyed roll papers 21 and 22 are measured by the length measurement sensor 102 disposed in the cutter unit 101, sent to a specified length, and cut by the cutter unit 101. Immediately before cutting, the paper feed roller pair 23 increases its speed to 120 mm / s, and the roll paper 21 is cut by making a slack of 50 mm.

  Paper dust generated when the roll paper 21 is cut by the cutter unit 101 falls into the paper dust collection container 200 in the cutter unit 101 and is collected. Therefore, according to this example, the generated paper dust can be efficiently collected over the width of the roll paper.

  Then, the cut roll paper is image-formed by the image forming apparatus unit 40, fixed by the fixing unit 50, and discharged to the paper discharge unit 70 through the paper discharge unit 60.

  FIG. 3 is a side view showing a roll paper cutting device used in the image forming apparatus according to the second embodiment. In this example, a paper dust collecting container 300 formed integrally with the main body of the cutter unit 101 is provided as a paper dust collecting device. Since other configurations are the same as those of the first embodiment, the same portions are denoted by the same reference numerals, and detailed description thereof is omitted. According to this example, paper dust can be efficiently collected with a simple configuration.

  FIG. 4 is a side view showing a roll paper cutting device according to the third embodiment. In this example, a paper dust collecting container 400 fixed to the cutter unit 101 main body with a magnet 401 is provided as a paper dust collecting device. Since other configurations are the same as those of the first embodiment, the same portions are denoted by the same reference numerals, and detailed description thereof is omitted. According to this example, paper dust can be efficiently collected and the paper dust collecting container 400 can be easily attached and detached.

  FIG. 5 is a cross-sectional view showing a roll paper cutting device according to a fourth embodiment, and FIG. 6 is a plan view showing a paper dust collector of the roll cutting device shown in FIG. In this example, as the paper dust collecting device 500, a paper dust collecting nozzle 501 arranged adjacent to the fixed blade 103, a paper dust sucking device 503 for sucking paper dust, a paper dust collecting nozzle 501, and a paper dust sucking device 503 are used. And a paper powder transfer pipe 502 for connecting the two.

  Further, as shown in FIGS. 5 and 6, the paper dust collecting apparatus 500 has a paper dust collecting nozzle 501 that is wider than the paper width, is provided adjacent to the fixed blade 103, and has a hollow structure. The paper dust suction device 503 includes an electric fan 503 and a filter unit 504.

In this example, reference numeral 503 is connected to the control device, and is operated only while the cutter unit 101 is cutting the roll paper. For this reason, the paper dust collecting apparatus 500 can efficiently collect the generated paper dust without disturbing the conveyance of the roll paper. Further, the paper dust collecting apparatus 500 can be prevented from being scattered because it is not operated at the time of roll paper exchange or jam processing.

1 is a side view illustrating an image forming apparatus according to an embodiment. FIG. 2 is a side view showing a roll paper cutting device used in the image forming apparatus shown in FIG. It is a side view which shows the roll paper cutting device used for the image forming apparatus concerning a 2nd Example. It is a side view which shows the roll paper cutting device which concerns on a 3rd Example. It is sectional drawing which shows the roll paper cutting device concerning a 4th Example. It is a top view which shows the paper dust collection | recovery device of the roll cutting device shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Image forming apparatus 20 ... Roll paper supply apparatus 21, 22 ... Roll paper 23 ... Paper feed roller pair 30 ... Original reading apparatus 40 ... Image forming apparatus part 50 ... Fixing unit 60 ... paper discharge unit 70 ... paper discharge unit 100 ... roll paper cutting device 101 ... cutter unit 102 ... length measuring sensor 103 ... fixed blade 104 ... moving blade 105 106, driving roller 200, paper dust collecting container 201, bolt 300, paper dust collecting container 400, paper dust collecting container 401, magnet 500, paper dust collecting device 501. ... Paper dust collection nozzle 502 ... Paper dust transfer pipe 503 ... Paper dust suction device 504 ... Electric fan 505 ... Filter unit

Claims (8)

In the roll paper cutting device comprising a cutter unit for cutting the roll paper fed from the roll paper feeding means,
A roll paper cutting device comprising paper dust collecting means for collecting paper dust generated when the cutter unit cuts the roll paper. The cutter unit includes a fixed blade and a movable blade, and the paper dust collecting means is disposed adjacent to the fixed blade of the cutter unit and has a size corresponding to the maximum sheet passing width of the roll paper. The roll paper cutting device according to claim 1.   The roll paper feeding device according to claim 1, wherein the paper dust collecting unit is configured integrally with the cutter unit.   The roll paper cutting device according to any one of claims 1 to 3, wherein the paper dust collecting means is detachable from the cutter unit.   The roll paper cutting device according to any one of claims 1 to 4, wherein the paper dust collecting means includes paper dust suction means for sucking the collected paper powder.   The roll paper feeding device according to claim 5, wherein the paper powder suction unit performs a suction operation only during a period in which the cutter unit cuts the roll paper. A roll paper feeding device comprising the roll paper cutting device according to claim 1. An image forming apparatus comprising the roll sheet feeding device according to claim 7.