JPH04253615A - Binding machine of image recorder - Google Patents

Abstract

PURPOSE:To draw out a belt material with an optimum length and prevent recording paper from choking due to drawn-out tape when recording is still left paper on a tray by detecting whether the recording paper is on a placing base or not and feeding the belt member only when the paper does not exist and turning around. CONSTITUTION:A tape-holding claw 29 is used as a turning means around periphery to circulate a belt member 23. After specified sheets of recording paper 32 are fed on a placing base 35, a tray for instance, a driving roller 25 is driven reversely counterclockwise to pull back the tape 23 to bundle the periphery of the recording paper 32. And a detecting hole 36 is provided on a mounting base 35 for the recording paper 32 to detect whether the taking out process of the recording paper 32 after bundling is completed or not. And the paper detector like an optical sensor 37 or like having alight projector and a light receiver is provided. When recording paper already recorded is detected, removal of paper is indicated and directed. When paper does not exsist, the tape is wound off (feeding out) and the recording paper wound off after recorded is bundled.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding device used as a recording paper post-processing device for image recording devices such as copying machines, facsimiles, and printers.

0002

2. Description of the Related Art Conventionally, it has been known that recording paper recorded by an image recording device such as a copying machine is subjected to post-processing such as punching, stapling, and bookbinding using a post-processing device.

[0003] Especially when processing a large number of recording sheets at high speed, a post-processing device has been introduced from the viewpoint of improving the productivity of the processing work. The main methods used include stapling with a stapler and gluing with a gluing machine.

[0004] In order to staple sheets with a stapler, the number of sheets to be processed, that is, the number of sheets to be stapled, is limited to about 100 sheets, depending on the size of the staple, and the recording paper stapled with a stapler is particularly thick at the staple. There was a problem that the needles got in the way because they were large and required width for binding.

[0005] If the paper is pasted using a gluing machine, it is not possible to separate the recording paper into pieces again, so it is not suitable for re-recording such as copying.

[0006]

[Problems to be Solved by the Invention] The present invention solves the above-mentioned conventional problems, the thickness of the recording paper does not change even after post-processing, and it is easy to record again if necessary. An object of the present invention is to provide a binding device as a post-processing device that does not come apart.

[0007]

[Means for Solving the Problems] The present invention solves the above-mentioned problems by providing a loading table for loading recorded recording paper, a sending means for sending out a binding band material, and a loop for looping the band material around the loading table. A bundling device for an image recording apparatus, characterized in that it includes a circulating means for circulating the recording paper in a shape, and a paper detecting means for detecting the presence or absence of recording paper on the mounting table, and sends out the band material to circulate it only when there is no paper. Settled.

[0008]

[Operation] According to the present invention, the binding band material is sent out by the feeding means, the band material is circulated in a loop shape by the circulating means, and the recording paper is sent out onto the mounting table, so that the recording paper is inserted into the loop of the band material. Then, the recording paper is bound or wrapped by tightening the band material. At this time, only when there is no paper recording paper on the mounting table, the band material is sent out, rotated, and placed in a bundling standby state. According to the present invention, it is possible to prevent the recording paper from remaining on the mounting table, making it impossible to use the strip material sent out by the delivery means, or from clogging the delivery means with the strip material, and bundling can be performed reliably. It became possible.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be explained based on the embodiments shown in the drawings.

FIG. 1 shows an example of a large-sized copying machine that processes a large amount of recording paper as an image recording device. The copying machine has a copy processing section A and a binding device B as a post-processing section.

The copy processing section A includes an automatic document feeder 1 that automatically feeds a plurality of set documents to a predetermined reading position.
an optical system including a lamp 2, mirrors 3 and 4, and a lens 5 for optically irradiating the originals sequentially placed at the reading position by the automatic document feeder 1; and an image carrier 6 for exposing image information by the optical system. , for example, a photoreceptor belt, a charger 7 that charges the photoreceptor belt 6 before exposure processing, and a developer 8 that develops an electrostatic latent image on the photoreceptor belt 6 formed by the charging and exposure processing. and the developing device 8
a transfer device 10 that transfers the developed image onto a recording paper fed from a paper feed section 9; a cleaning section 11 that cleans the photoreceptor belt 6 after the transfer process in preparation for the next copying process; , includes a fixing device 12 that fixes the transferred image on the recording paper, and a conveyance device 13 that conveys the recording paper after the fixing process to the post-processing section B.

A binding device serving as a post-processing section B binds or wraps a plurality of transfer-processed recording sheets into one bundle using a band material. In the bundling device B, the recording sheets fed from the copy processing section A are bound by a band extending in a direction perpendicular to the feeding direction, for example, in the lateral direction.

As shown in FIG. 2, the binding device serving as the post-processing section B rotatably supports a tape roll 21 wrapped with a strip material (hereinafter referred to as tape) 23 coated with glue on one side. It has a support shaft 22. The tape 23 rewound from the tape roll 21 passes through a tension roller 24 and is held between a drive roller 25 and a pinch roller 26, which serve as a feeding means for sending out the strip material, and is fed and returned by forward and reverse rotation of the drive roller 25. Exercise is given. The tape 23 given a feeding motion by the drive roller 25 passes through the guide path 28 of the guide member 27 and reaches the tape holding claw 29 . The guide path 28 is formed between the upper guide part 27a and the lower guide part 27b of the guide member 27.

The tape holding claw 29 is rotatably supported by a support shaft 30, has a claw portion 29a at one end for holding the tape 23, and is used as a circulating means for circulating the strip 23 in a loop.

The tape holding claw 29 is provided at a position outside the range of the recording paper to be fed, for example, at a position below the recording paper (for example, under the mounting table 35). It is convenient if the feeding direction in which the tape 23 is fed toward the tape holding claw 29 is set in a direction that intersects with the feeding direction of the recording paper to the post-processing section B. Generally, if the feeding direction of the recording paper is vertical, the feeding direction of the tape 23 is horizontal.

A tape guide 31 is provided so as to surround the entire recording paper stacked on the mounting table 35 in a direction perpendicular to the feeding direction of the recording paper, for example in the lateral direction. As shown in FIG. 2, the tape guide 31 mainly has both sides and the surface on the platform where the tape holding claws 29 are present, and as long as the tape is guided and moved smoothly, some tape guides such as the upper part are omitted. If necessary, a tape guide can also be placed at the top to surround the entire area. The tape holding claw 29 may be arranged above or on the side of the recording paper, rather than on the mounting table 35, if desired.

The binding operation is performed as follows.

When the guide member 27 moves out of the range of rotation of the tape holding claw 29, for example to the lower position shown by the solid line in FIG.
The tape holding claw 29 is rotated 360 degrees counterclockwise in the figure around the shaft 30.

When the tape holding claw 29 rotates around the shaft 30, since the leading end of the tape 23 has been inserted and gripped by the claw portion 29a in advance, the tape 23 is also rotated around the shaft 30 while being held by the tape holding claw 29. It is rotated once around. Note that when the tape holding claw 29 is rotated, the drive roller 2
5 is also rotated clockwise in the figure, the tape 23 is sent out, and the leading end of the tape 23 is prevented from coming off the claw portion 29a of the tape holding claw 29.

When the tape holding claw 29 rotates once, the tape 23 makes a small loop as shown by the solid line in FIG. 4, and the guide member 27 returns to its original position, causing the tape 23 to
3 is held between the tape holding claw 29 and the guide member 27. Even after the tape holding claw 29 rotates once and stops, the drive roller 25 continues to rotate and the tape 23 is fed out, so that the tape 23 moves from the loop shown by the solid line in FIG. 4 to the tape guide as shown by the dashed line. 31 to form a large loop. After the tape 23 is fed out to a state in which the entire tape 23 is in contact with the tape guide 31, the drive roller 25 is stopped and enters a bundling standby state in which it waits for recording paper to be fed.

After a predetermined number of recording sheets 32 are fed onto the mounting table 35, for example, a tray, the drive roller 25 is reversely driven counterclockwise in response to a recording processing end signal from the copy processing section A, and the tape is 23 is pulled back and tightened around the recording paper 32 to bind it, as shown in FIG.

With the tape 23 wrapped around the recording paper 32 and tightened, the heater 33 is rotated around the shaft 34, and at the position where the tapes are overlapped, the heater 3
The heating part 33a of No. 3 is pressed by the tape holding claw 29 to heat the tape 23, melt the glue on the tape 23, and remove the tape 2.
Glue the 3 comrades together.

The tip of the heater 33 and the tip of the guide member 27 form a cutter blade, and after adhesion of the tape, the guide member 27 is moved clockwise from the state shown by the solid line in FIG. 5 to the state shown by the chain line. The tape is cut by rotating.

After cutting the tape 23, the tape holding claw 29 retreats from the position of the tape 23, for example to the rear of the page, and the heater 3
3 retreats to its original position, thereby completing a series of recording paper binding operations. When the bound recording paper is removed, the tape holding claw 29 returns to its original position and the above operation is repeated.

If the tape holding claw 29 can be easily removed from the tape 23 by removing the bound recording paper, the retracting movement of the tape holding claw 29 can be omitted.

In order to detect whether or not the recording paper 32 has been taken out after being bundled, a detection hole 36 is formed in the mounting table 35 on which the recording paper 32 is placed, as shown in FIG. A paper detection means such as an optical sensor 37 is provided.

The control devices of the copy processing unit A and the binding device B are configured as shown in FIG. 7, for example, and determine whether the binding is set, that is, whether the binding is to be performed or not, and perform binding according to the flow shown in the control flowchart of FIG. If so, the paper detection means 37
If it detects that there is recorded paper, it will issue an instruction and display to remove the paper, or if there is no paper, it will feed the tape (feed out), and after the recording operation the tape will be fed out. Make a binding motion. If the paper is not bundled even after the recording process, the recording paper is ejected to another tray.

The control devices for the copy processing section A and the bundling device B are configured as shown in FIG. 9, and the control device for the bundling device B is additionally provided with a timer and a calculation section. Based on the paper size, paper orientation, and number of sheets to be recorded, the calculation unit calculates the required tape feeding length and feeding time, sets the rotation time of the drive roller on a timer, and then calculates the required tape feeding length and feeding time based on the timer time. It is also possible to unwind the tape and perform the binding operation after the recording operation.

As shown in FIG. 11, a tape sensor 43 for detecting the presence or absence of a tape is provided on the side facing the tape holding claw 29, for example at an upper position, and the control device is configured as shown in FIG. 12, and as shown in FIG. Control can also be performed according to the flow of the control flowchart. That is, when binding is instructed and the recording device is turned on, the tape 23 is fed out and the tape 2
The tape is fed out until the tape sensor 43 detects that the tape 3 is fed out to a predetermined position.
When the tape is detected by turning on the tape sensor 43, the feeding of the tape, that is, the rotation of the drive roller 25 is stopped.
After the recording operation is performed, the binding operation is performed.

In contrast to the example in which the tape guide 31 on the side surface is provided and the tape guide on the top surface is omitted as shown in FIG. 2, an upper tape guide 38 is also provided on the top surface as shown in FIG. 43, a belt 39 is fixed to the upper tapered guide 38, the belt 39 is wound around a drive belt pulley 40 and a driven belt pulley 41, and the drive belt pulley 40 is driven by a motor 42, thereby acting as a sensor moving means. It is also possible to configure the upper tape guide 38 and the tape sensor 43 to move up and down. In this case, the control device is configured as shown in FIG. 15 and controlled according to the control flowchart shown in FIG. 16. When the binding is set and binding is instructed, the calculation section of binding machine B calculates the optimal tape length required for binding based on the specified paper size, paper orientation, and number of recording sheets, and then calculates the optimal tape length required for binding. Based on this, the position of the upper guide 38 is adjusted by the control of the motor 42, and the tape sensor 43 whose position is adjusted by moving together with the upper guide 38 moves the tape 23 until the drive roller 25 detects the tape 23 to be fed out. The feeding is done,
After that, it stops and recording operation and binding operation are performed.

As shown in FIG. 17, it is formed by arranging a plurality of tape sensors 43 at predetermined positions, and uses the control device shown in FIG. 18 and the control flowchart shown in FIG. An optimal tape sensor 43 is selected according to the optimal tape length calculated based on the paper direction and the number of recorded sheets.
The tape is fed out until it detects the tape. When the selected tape sensor 43 detects the tape, the feeding operation is stopped and recording and binding operations are performed.

The control device is configured as shown in FIG. 20, and an abnormality detection timer is additionally provided in the control device of the bundling device, and the abnormality detection timer is set when bundling is instructed as shown in the control flow of FIG. Then, the tape sensor 43 in FIG. 14 or the tape in FIG. 17 is set based on the optimum tape length and maximum feeding time calculated by inputting the paper size, paper direction, and number of recording sheets. The tape is fed out until it is detected by the sensor 43.

The tape sensor 43 may not turn on due to a malfunction of the tape sensor 43, clogging with paper dust, dirt, etc. In this case, the abnormality detection timer set to the calculated maximum feeding time does not detect the tape even after a predetermined period of time, and at that time, an abnormality is detected, an abnormality is displayed, and feeding by the drive roller 25 is stopped. .

[0034]

[Effects of the Invention] According to the present invention, the recorded recording paper can be bound or wrapped with a band, and there is no possibility of jams caused by unwinding the tape while the recording paper remains on the tray. was prevented.

By calculating the optimal length of the tape to be fed out, it is possible to prevent problems such as recording paper ejection errors and irregularities due to insufficient tape feeding, and to prevent loss of feeding time due to feeding out more tape than necessary. This made it possible to prevent the occurrence of waiting time.

[0036] According to the present invention, the length of the belt material fed out by the binding machine can always be maintained at a predetermined length, thereby improving reliability.

According to the present invention, the size of the recording paper to be bundled,
It is now possible to feed out the optimal length of strip material depending on the direction and number of sheets, which prevents problems such as recording paper ejection errors and irregularities due to insufficient tape feeding, and enables rational bundling. became.

According to the present invention, even if an abnormality occurs in the tape sensor due to a failure or the like, it is possible to prevent the tape material from being fed out more than a predetermined amount by detecting the abnormality, thereby improving work efficiency.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic diagram of a recording apparatus according to the present invention.

FIG. 2 is a schematic illustration of a binding device.

FIG. 3 is an explanatory diagram of the movement of tape holding claws.

FIG. 4 is an explanatory diagram of the state of the tape until it is ready for binding.

FIG. 5 is an explanatory diagram of a bundled state.

FIG. 6 is an explanatory diagram of a binding device provided with paper detection means.

FIG. 7 is a schematic diagram of an example of a control device.

FIG. 8 is a diagram showing an example of a control flowchart.

FIG. 9 is a schematic diagram of another example of a control device.

FIG. 10 is a diagram showing an example of a control flowchart according to FIG. 9;

FIG. 11 is a diagram showing a tape sensor of the binding device.

FIG. 12 is a schematic diagram of another example of a control device.

FIG. 13 is a control flowchart by the control device of FIG. 12;

FIG. 14 is an explanatory diagram of a tape sensor whose position is adjustable in the binding device.

FIG. 15 is a schematic diagram of another embodiment of a control device.

FIG. 16 is a diagram showing an example of a control flowchart according to FIG. 15;

FIG. 17 is an explanatory diagram showing another embodiment of the tape sensor of the binding device.

18 is a schematic diagram of a control device corresponding to the embodiment of FIG. 17; FIG.

FIG. 19 is a diagram showing an example of a control flowchart according to FIG. 18;

FIG. 20 is a schematic diagram showing a modification of the control device.

FIG. 21 is a diagram showing an example of a control flowchart according to FIG. 20;

[Explanation of symbols]

21 Tape roller 23 Tape (band material) 25 Drive roller (feeding means) 27 Guide member 29 Tape holding claw (circulating means) 30 Shaft 31 Tape guide 32 Recording paper 35 Mounting table 37 Paper detecting means 38 Upper tape guide (sensor moving means) )43
tape sensor

Claims (6)

[Claims] [Claim 1] A platform for loading recorded recording paper;
A feeding means for sending out a binding band material, a circulating means for circulating the band material in a loop around the mounting table, and a paper detecting means for detecting the presence or absence of recording paper on the mounting table,
A binding device for an image recording device, characterized in that a band material is sent out and circulated only when there is no paper. 2. A claim characterized in that an input means for inputting the size, direction, and number of recording sheets of the recording paper, and a calculation means for calculating the length of the strip material to be fed out based on the information from the input means are provided. A binding device for an image recording device according to item 1. 3. A tape sensor is provided at a position opposite to the feeding means with the recording paper in between, and when the tape sensor detects a strip, the feeding of the strip by the feeding means is stopped. A binding device for an image recording device according to claim 1 or 2. 4. A sensor moving means for moving the tape sensor is provided, and the position of the tape sensor is moved in accordance with the optimum strip length calculated by the calculation means. Binding device for an image recording device according to any one of 3. 5. A plurality of tape sensors are provided, one at a predetermined position according to the length of the strip, and one tape sensor corresponding to the calculated optimum strip length is selected. 5. The bundling device for an image recording apparatus according to claim 1, wherein feeding of the strip by the feeding means is stopped upon detection of the strip by a selected tape sensor. 6. An abnormality detection means is provided, and an abnormality is detected when a predetermined tape sensor does not detect the strip within a calculated time.
A binding device for an image recording device according to .