JPH05318382A - Cutting and separating device for continuous recording paper - Google Patents

Abstract

PURPOSE:To provide a cutting and separating device for a continuous recording paper which can cut a rolled paper and separate a fan hold paper with the same structure. CONSTITUTION:This cutting and separating device is provided with a fixed blade 53 and a cutter shuttle 54 reciprocated along the fixed blade 53, and this cutter shuttle 54 has a rotating cutter 59 in the disk state positioned diagonal to the fixed blade 53. The rotating cutter 59 is capable of reciprocating with rotating with its blade tip in contact with the fixed blade, and the moving direction of the rotating cutter 59 is reversed depending on a continuous recording paper is a rolled paper or a fan hold paper.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous recording paper cutting / separating device for cutting roll paper from a desired position and separating fan hold paper from the position of the sewing machine.

[0002]

2. Description of the Related Art Continuous recording paper is widely used as recording paper for printing machines such as dot printers and electrophotographic printers, and continuous recording paper includes roll paper and fan hold paper. The roll paper may be cut from any position after printing.However, since the fan hold paper has creases, that is, perforations formed at predetermined intervals, it is not possible in the case of fan hold paper. Need to be separated from its perforation. Therefore, the roll paper is suitable for printing a drawing or the like, while the fan-hold paper is suitable for printing a calculation result or a program such that the print output becomes long.

The printing machine is designed to sequentially discharge the continuous recording paper after printing, so that when the continuous recording paper is roll paper, the operator can start from any position where the continuous recording paper is discharged from the printing machine. On the other hand, when the continuous recording paper is fan-hold paper, the continuous recording paper can be separated from the perforation at the ejected portion.

[0004]

By the way, the fact that the roll paper is cut or the fan-hold paper is separated by the manual operation of the operator is conventionally performed. Therefore, the roll paper is cut diagonally. In addition, in the case of fan-hold paper, there is a case where a portion other than perforations is broken.

For these reasons, it is desired to mechanically cut or separate the continuous recording paper. However, there is still no apparatus capable of cutting the roll paper and separating the fan-hold paper at the same time. Not developed. The present invention has been made based on the above-mentioned circumstances, and an object thereof is to provide a continuous recording paper cutting / separating device capable of cutting roll paper and separating fan-hold paper with the same structure. Especially.

[0006]

A cutting / separating device of the present invention is provided with a fixed blade extending in a width direction of a continuous recording paper, which is arranged in a conveyance path of the continuous recording paper, and a blade edge of which is in contact with the fixed blade. It has a disc-shaped rotary blade and a drive means for reciprocating along the fixed blade while rotating the rotary blade, and the rotary blade has a plate surface oblique to the fixed blade. It is arranged.

[0007]

When the roll paper as the continuous recording paper is supplied to the transport path, the rotary blade moves in one direction while rotating from the one end side to the other end side of the fixed blade, and accordingly, in the moving direction. The front circle of the rotary blade on the front side in cooperation with the fixed blade cuts the roll paper. When fan-hold paper as continuous recording paper is supplied to the transport path, the rotary blade moves in the other direction while rotating from the other end side of the fixed blade toward the one end side. ,
The blade edge, which is the front side in the moving direction, pushes through the perforations of the fan-hold paper and separates.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIG. 1, an overall electrophotographic printing machine is shown schematically. This electrophotographic printing machine is roughly divided into a paper feeding device 1 and a printer device 2 arranged on the paper feeding device 1, and on the front surface of the paper feeding device 1,
The paper feed trays 3 and 4 are attached so that they can be pulled out in two upper and lower stages. In each of these paper feed trays 3 and 4,
A predetermined number of cut sheets of different sizes can be accommodated, and the cut sheets are taken out one by one from the paper feed tray and supplied to the printer device 2.

The electrophotographic printing machine is not limited to cut sheets,
Continuous recording paper such as roll paper and fan hold paper can also be used, and the continuous recording paper is guided from the slit-shaped paper supply port 5 on the front surface of the printer device 2 to the inside thereof. .. A discharge tray 6 is formed on the upper surface of the printer device 2, and the cut sheet after printing is discharged onto the discharge tray 6 from a slit-shaped discharge port 7.

The printer device 2 has a housing shell, so-called clam shell, whose internal structure is shown schematically in FIGS. 2 and 3. The housing shell is composed of a fixed shell 8 fixed on the sheet feeding device 1 and a movable shell 10 attached to a lower rear portion of the fixed shell 8 via a pivot 9. The side shell 10 is centered on the pivot 9 as shown in FIG.
It can be opened upward to a certain angle as shown in FIG. The paper discharge tray 6 and the paper discharge port 7 described above are formed in the movable shell 10.

A tractor feeder 11 is arranged in the front portion of the fixed shell 8 and the tractor feeder 1 is provided.
1, continuous recording paper such as roll paper and fan hold paper is fed into the printer device 2 in the direction of arrow A1 in FIG. A pair of feed rollers 12 is disposed immediately downstream of the tractor feeder 11 when viewed in the direction of feeding continuous recording paper, that is, in the direction of arrow A1. , 4 are fed into the printer device 2 from the direction of arrow A2 in FIG. In the figure, 13 indicates a guide for guiding the cut sheet from the sheet feeding device 1 toward the feed roller 12.

The continuous recording paper or cut recording paper fed by the tractor feeder 11 or the feed roller 12 is guided toward the printer kit 14. Although the tractor feeder 11 is used for feeding fan-hold paper, in this embodiment, the tractor feeder 11 also includes an endless suction belt, which is not shown in the figure. When the continuous recording paper is roll paper, the roll paper can be attracted to the suction belt and fed to the printer kit 14.

The printer kit 14 includes a kit casing 15 shown by a chain double-dashed line in FIG. 2, and the kit casing 15 has upper and lower surfaces opened. Each of the developing device 16 and the drum unit 17 is detachably housed in the kit casing 15. Also,
A guide plate 19 is attached to the lower surface of the kit casing 15 in cooperation with a guide plate 18 on the fixed shell 8 side to define a guide path for recording paper.
A pinch roller 21 that cooperates with the guide roller 20 on the fixed shell 8 side is attached to the developing device 16.

An exposure device 22 using an LED (light emitting diode) array as a light source is disposed immediately above the developing device 16 and the drum unit 17 so as to enter the kit casing 15. The container 22 is fixedly attached to the movable shell 10, not to the kit casing 15 side. Further, a transfer unit 24 that cooperates with the photosensitive drum 23 in the drum unit 17 is arranged on the lower surface side of the kit casing 15 so as to enter the kit casing 15, and the transfer unit 24 is fixed. It is fixedly attached to the side.

The kit casing 15 described above has a lower portion on the rear side thereof as viewed from the front and rear direction of the printer device 2 and has a rotating shaft 2.
It is supported by the movable side shell 10 via 5. Therefore, as shown in FIG. 3, when the movable shell 10 is in the state of being opened upward, the kit casing 15
Can be rotated downward about the rotation shaft 25 by a predetermined angle, whereby the upper surface opening of the kit casing 15 can be exposed to the outside. At this time, although not shown, the pressing between the movable shell 10 side and the developing device 16 and the drum unit 17 are also released at the same time. The space required for housing the kit casing 15 on the movable shell 10 side is indicated by a broken line in FIG.

When the kit casing 15 is in the posture shown in FIG. 3, not only the toner cartridge 26 of the developing device 16 but also the drum unit 17 and the developing device 16 itself can be replaced. Here, it should be noted that these replacement operations are all performed from the front side of the printing machine through the top opening of the kit casing 15. That is, in the case of the printing machine of this embodiment, the developing device 1
The 6 and the drum unit 17 are not detachably attached to the kit casing 15 from the side thereof, but can be inserted and removed through the upper opening of the kit casing 15. Further, in the case of this embodiment, the toner cartridge 26 is filled with two-component toner.

Although not shown, the drum unit 17 is configured to accommodate a main charger, a brush roll of residual toner, and a stirring roll, in addition to the photosensitive drum 23. There is also a collection chamber that stores the waste without discharging it. The printing system including the printer kit 14, the exposure device 22 and the transfer device 24 described above forms a toner image on a recording sheet as follows. With the rotation of the photosensitive drum 23, first, the photosensitive surface of the photosensitive drum 23 is uniformly charged by the main charger 28 in the drum unit 17, and then the light beam from the exposure unit 22 is applied to the photosensitive surface. Thus, an electrostatic latent image is formed on this photosensitive surface. After that, the electrostatic latent image on the photosensitive surface is subjected to toner development by the developing device 16, and a visualized toner image is obtained on the photosensitive surface. Then, the toner image on the photosensitive surface is transferred onto the recording paper when the recording paper passes between the photosensitive drum 23 and the transfer device 24.

After that, when the recording paper is conveyed toward the rear side of the printing device 2 by the conveyor 34, the recording paper passes immediately below the fixing device 35, and at this time, the toner image on the recording paper is passed. Will be fixed. The conveyer belt of the conveyer conveyor 34 is a suction belt formed with holes distributed over the entire surface thereof, so that the conveyer belt 34 can convey the recording paper while adsorbing the recording paper. ..

A fan unit 36 for generating an air flow is arranged immediately below the transfer conveyor 34.
The transport conveyor 34 and the fan unit 36 are respectively arranged on the fixed shell 8 side except for a part of the transport conveyor 34. That is, as is clear from FIG.
Pinch roller 34a located at the rear end of the conveyor 34
Are rotatably supported on the movable shell 10 side.

After the fixing process, if the recording paper is a cut paper, it is ejected from the above-mentioned paper ejection port 7 through the ejection guide mechanism 37 in the direction of arrow B2 in FIG. On the other hand, if the recording paper is continuous recording paper,
2 through the paper output port (not shown) on the rear surface of the printer device 2.
It will be discharged in the middle B1 direction. Discharge guide mechanism 3
Reference numeral 7 denotes a pair of lower paper discharge rollers 38 arranged near the rear end of the transport conveyor 34, a pair of upper paper discharge rollers 39 arranged near the paper discharge port 7, and these paper discharge rollers. Three
A guide plate 40 that curves and extends so as to connect between 8 and 39, and guide plates 41, 42 and 4 that cooperate with the guide plate 40 to define a guide passage for cut sheets.
It consists of three.

The discharge guide mechanism 37 is arranged in the movable shell 10 except for a part thereof.
The drive side roller of the lower paper discharge roller 38 and the guide plate 41 are arranged in the fixed side shell 8. When the recording paper is continuous recording paper, the guide plate 41
2 is rotated as shown by a broken line in FIG. 2, whereby the guide plate 41 also serves as a guide for continuous recording paper.

As shown in FIGS. 2 and 3, between the conveyer 34 and the pair of lower discharge rollers 38 of the discharge guide mechanism 37, the roll paper and the fan hold paper are used in common. A cutting / separating device 50 is arranged. The cutting / separating device 50 is schematically shown in its entirety in FIGS. 4 and 5, and the cutting / separating device 50 will be described below.

FIG. 4 is a schematic front view of the cutting / separating device 50 as seen from the side of the lower paper discharge rollers 38. The cutting / separating device 50 sandwiches the recording paper conveyance path. A pair of upper and lower support frames 51 and 52 are provided. These support frames 51 and 52 extend in parallel to the width direction of the recording paper, and are attached to the fixed-side shell 8 via attachment means (not shown). Support frame 51,
The length of 52 is sufficiently longer than the width dimension of the recording paper that can be printed by the printing machine, and the cross-sectional shape of the upper support frame 51 is substantially U-shaped as shown in FIG. The side support frame 52 is L-shaped.

A fixed blade 53 is attached to the upper surface of the lower support frame 52. The fixed blade 53 is made of a thin steel plate and extends in the width direction of the recording paper, that is, over the entire length of the support frame 52. As is apparent from FIG. 5, the fixed blade 53 is positioned at the same level as the conveyance path of the recording paper, and the fixed frame 53 extends from the support frame 52 to the lower paper ejection roller 3
It projects toward 8 by a predetermined length. Therefore,
The protruding portion of the fixed blade 53 is an actual fixed-side blade extending in the length direction of the support frame 52.

A cutter shuttle 54 is attached to the upper support frame 51 at one end thereof. The cutter shuttle 54 has a shuttle plate 55 extending along the support frame 51, and an extension portion 56 is integrally formed on the upper edge of the shuttle plate 55. The extension 56 is provided on the support frame 51.
A pair of slider parts 57 are attached to the surface of the extension part 56 on the side of the support frame 51. As shown in FIG. 5, these slider portions 57 are formed by projecting upper end edges 51 of the support frame 51.
It is slidably fitted to a, whereby the shuttle plate 55, that is, the cutter shuttle 54, is supported by the upper edge 51a of the support frame 51, and
The support frame 5 uses the upper edge 51a as a guide rail.
Reciprocating along 1

The shuttle plate 55 is provided with a bearing plate 58 located on the lower paper discharge roller 38 side and facing the shuttle plate 55 at a distance. A bent portion 59, which is bent toward the shuttle plate 55, is integrally formed from one end of the bearing plate 58.
The bent portion 59 is connected to one end of the shuttle plate 55. The bearing plate 58 is slightly inclined with respect to the reciprocating direction of the cutter shuttle 54 described above. That is, as is apparent from FIG. 6, the bearing plate 58 is inclined such that the other end side thereof is close to the shuttle plate 55.

The cutter shuttle 54 is provided with a disc-shaped rotary blade, that is, a rotary cutter 59, which is located between the shuttle plate 55 and the bearing plate 58. The rotary cutter 59 has a cutter shaft 60. Both ends thereof are rotatably supported by both the shuttle plate 55 and the bearing plate 58. Here, the bearing plate 5
Since 8 is inclined as described above, the cutter shaft 6
Zero is not orthogonal to the blade surface of the fixed blade 53, and one end of the cutter shaft 60 on the bearing plate 58 side is inclined so as to be positioned closer to the support frame 51 side than the other end.

Therefore, in the rotary cutter 59, only the blade edge on the left side in FIG. 6 is in contact with the fixed blade 53,
The blade edge on the right side is separated from the fixed blade 53 with a predetermined distance. That is, the disk surface of the rotary cutter 59 is inclined with respect to the fixed blade 53. The rotary cutter 59 has a diameter such that its blade edge reaches slightly below the fixed blade 53, and the extension portion 56 of the shuttle plate 55 has a diameter for avoiding interference with the rotary cutter 59. The notch 56a is formed.

When the cutter shuttle 54 having the above-mentioned rotary cutter 59 reciprocates along the support frame 51, the rotary cutter 59 also rotates at the same time.
The rotation of 9 is performed by the same driving means, and the driving means will be described below. Referring again to FIGS. 4 and 5, pulley attachment plates 61 and 62 are attached to both ends of the lower support frame 52, respectively. The mounting plate 61 projects laterally from one end of the support frame 52, and the mounting plate 61 rotatably supports a pair of upper and lower pulleys 63 and 64.

On the other hand, the mounting plate 62 projects laterally and downward from the other end of the support frame 52, and its upper end extends beyond the lower end of the upper support frame 51. The mounting plate 62 includes three pulleys 65, 6
6, 67 are rotatably attached. Pulley 65
Is positioned at the same level as the pulley 63 at the upper corner of the mounting plate 62, and the pulley 66 is positioned below the pulley 65 and on the right side in FIG. Further, the pulley 67 is positioned below the pulley 65. The pulley 67 has a larger diameter than the pulleys 65 and 66, and a gear 68 having a larger diameter than the pulley 67 is attached to the pulley shaft.

In the mounting plate 62, the pulley 65,
An electric motor 69 capable of rotating in the forward and reverse directions is attached to a surface located on the opposite side to the surface on the 66, 67 side, and an output shaft 70 of the electric motor 69 rotatably penetrates the attachment plate 62. And is projected toward the pulleys 65, 66, 67. A pinion 71 is attached to the protruding end of the output shaft 70, and the pinion 71 is meshed with a gear 68. Therefore, when the electric motor 69 is driven, the pulley 68 is also rotated by rotating the gear 68 via the pinion 71 of the output shaft 70.

Then, the above-mentioned pulleys 63, 64, 6
An endless string 72 is wound around 5, 66 and 67. That is, as shown in FIG. 4, the cord 72 extends from the pulley 67 to the lower support frame 5 via the pulley 66.
2 to reach the pulley 61, and from this pulley 61 via the pulley 63, the upper support frame 5
1 extends to the pulley 65, and then returns from the pulley 65 to the pulley 67.

Here, a part of the string 72 extending along the upper support frame 51 is engaged with the cutter shuttle 54. Specifically, as shown in FIG. 6, the other end of the cutter shaft 60 of the cutter shuttle 54 projects from the shuttle plate 55, and the pulley 73 is also attached to this projecting end. Therefore, by looping a part of the string 72 around the pulley 73, the string 72 and the cutter shuttle 54 are engaged, and therefore the electric motor 69
When the cord 72 is driven by driving the cord 72, the cutter shuttle 54 also moves along with the movement of the cord 72.
Along with the movement of both ends of the support frame 51, and at the same time as this movement, the rotary cutter 5 via the cutter shaft 60.
9 will be rotated. It should be noted that how to hang the cord 72 around the pulley 73 is clear from FIG. 6, but when viewed in the moving direction of the cutter shuttle 54, the blade edge of the rotary cutter 59, which is the front side thereof, is fixed to the fixed blade 53 from above. It is designed to be rotated once. Further, although the inclination of the cutter shaft 69 is exaggerated in FIG. 6, the actual inclination angle of the cutter shaft 69 is slight. Therefore, the inclination of the pulley 73 of the rotary cutter 59 and the cutter shaft 60 is also slight, and therefore, by running the cord 72 around the pulley 73, when the cord 72 runs, the cutter shaft 60
That is, the rotary cutter 59 rotates smoothly.

The cutter shuttle 54 normally stands by at one of the rest positions of both ends of the support frame 51, and the right end of the support frame 51 in FIG. 4 is the rest position of the cutter shuttle 54 for roll paper. The left end of the support frame 51 is the rest position of the cutter shuttle 54 in the case of fan hold paper. When the cutter shuttle 54 is in each rest position, the cutter shuttle 54 is in contact with the stopper 81 attached to the support frame 51.

At both ends of the support frame 51, mounting plates 7 are provided.
The position detection sensors 75 are arranged via the respective positions 4.
These position detection sensors 75 are, for example, limit switches, and these limit switches are turned on by the extension portion 56 of the shuttle plate 55 when the cutter shuttle 54 is at the rest position. Therefore, based on the detection signal from the position detection sensor 75, it can be detected which rest position the cutter shuttle 54 is in.

Further, a paper discharge detection sensor 76 is attached to the lower support frame 52, and this paper discharge detection sensor 76 detects passage of cut paper or continuous recording paper. As shown in FIG. 5, the upper and lower support frames 51, 52 are provided with a transport conveyor 34.
A pair of guide plates 77 and 78 which project toward the side and guide the recording paper are attached to the opening between the support frames 51 and 52. Further, the support frame 52 faces the pair of lower paper discharge rollers 38. Extending guide plate 7
9 is attached. This guide plate 79
It cooperates with the guide plate 80 located above it to define the guide path for the recording paper.

Next, the cutting of the roll paper and the separation of the fan hold paper by the cutting / separating device 50 will be described. First, when roll paper is used as the recording paper, the cutter shuttle 54 of the cutting / separating device 50
As seen in FIG. 4, the support frame 51 is in a standby state at the right end rest position. In this state, when a roll paper cutting command signal is supplied to the electric motor 69, the electric motor 69
As seen in FIG. 4, the pinion 71 is driven to rotate clockwise. Therefore, the string 72 travels in the direction of the solid line arrow in FIG. 4, whereby the cutter shuttle 54 moves from the right end rest position to the left end rest position while the rotary cutter 59 thereof rotates. At this time, the rotary cutter 59 is rotated while advancing while being in contact with the fixed blade 53, as shown in FIG. 7 in which the blade edge on the front side as viewed in the moving direction thereof is rotated, whereby the roll paper SR is fixed. It is cut by the cutting action of 53 and the rotary cutter 59. When the cutter shuttle 54 reaches the rest position at the right end, the rotation of the electric motor 69 is stopped. After the cut roll paper SR is discharged from the printing machine, the electric motor 69 is driven in the reverse direction, whereby the cutter shuttle 54 returns to the rest position at the right end, and at this rest position, the next cut command signal is sent. Wait until it is emitted.

On the other hand, when fan hold paper is used as the recording paper, the cutter shuttle 54 stands by at the rest position at the left end of the support frame 51, and in this state, the fan hold paper separation command signal is electrically driven. Motor 69
Is supplied to the electric motor 69, the electric motor 69 is driven to rotate the pinion 71 in the counterclockwise direction as viewed in FIG.
Therefore, in this case, the cord 72 travels in the direction of the broken line arrow in FIG.
While the 9 rotates, it moves from the rest position at the left end to the rest position at the right end. At this time, the rotary cutter 59 advances while rotating in a state in which the blade edge on the front side in the moving direction thereof is separated from the fixed blade 53 as schematically shown in FIG. Does not work as
The fan hold paper SF is separated by pushing through the perforations of the fan hold paper SF. even here,
After the separated fan hold paper SF is ejected from the printing machine, the cutter shuttle 54 returns to the rest position at the left end in FIG. 4 and waits until the next separation command signal is issued.

At the time of cutting or separating, the cutting position of the roll paper and the perforation of the fan hold paper are positioned by the transport system for continuous recording paper.
Further, since the leading end of the continuous recording paper remaining in the printing machine after cutting or separating surely passes between the pair of guide plates 79 and 80 when the continuous recording paper is fed thereafter, the pair of lower ejections is ejected. It is stably guided between the paper rollers 38.

The present invention is not limited to the above-described embodiment, but various modifications can be made. For example,
The string 72 in one embodiment is used to cause the cutter shuttle 54 to reciprocate and the rotary cutter 59 to rotate at the same time. However, the string 72 is used only for the cutter shuttle 54 to reciprocate, and the rotary cutter 59 is used. It may be rotated by a separately provided electric motor.

Further, in one embodiment, as viewed in the transport direction of the continuous recording paper, it is located between the transport conveyor 34 and its pinch roller 34a before and after the cutting / separating device 50, and the pair of lower discharge rollers 38. A continuous recording paper is sandwiched between them so that a predetermined tension is applied to the continuous recording paper at the time of cutting or separating. However, continuous recording is performed separately from the conveyer conveyor 34 and the lower discharge roller 38. It is also possible to incorporate a pair of front and rear rollers that sandwich the paper in the cutting / separating device 50 itself.

Further, the cutting / separating device of the present invention can be applied to a dot printer as well as an electrophotographic printer.

[0043]

As described above, the cutting / cutting of the present invention
The separating device arranges the disc-shaped rotary blade diagonally with respect to the fixed blade arranged in the conveying direction of the continuous recording paper, and reciprocates along the fixed blade with the blade edge in contact with the fixed blade. With a simple structure that allows it to move, when the rotary blade moves in one direction along the fixed blade while rotating, the fixed blade and the rotary blade cooperate to cut roll paper as continuous recording paper. On the other hand, when the rotary blade rotates and moves in the other direction along the fixed blade, the rotary blade pushes through the perforations of the fan-hold paper as continuous recording paper to separate the fan-hold paper. It can be performed.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a printing machine.

FIG. 2 is a schematic diagram showing an internal structure of a printer device of a printing machine.

FIG. 3 is a schematic view showing a state where a movable side shell of the printer device is opened.

FIG. 4 is a front view of the cutting / separating device.

FIG. 5 is a left side view of the cutting / separating device.

FIG. 6 is a horizontal sectional view showing a cutter shuttle of the cutting / separating device.

FIG. 7 is a schematic view of a cutting / separating device showing cutting of roll paper.

FIG. 8 is a schematic view of a cutting / separating device showing separation of fan hold paper.

[Explanation of symbols]

 51, 52 Support frame 53 Fixed blade 54 Cutter shuttle 59 Rotating cutter 60 Cutter shaft 69 Electric motor 72 String 73 Pulley

Claims (1)

[Claims] 1. A fixed blade extending in the width direction of the recording paper, which is arranged on a conveyance path of continuous recording paper, a disk-shaped rotary blade which is arranged so that a blade edge is in contact with the fixed blade, and the rotary blade. A driving means for reciprocating along the fixed blade while rotating, and the rotary blade is arranged such that its plate surface is oblique to the fixed blade. , Continuous recording paper cutting / separating device.