JPH0812128A - Carrying mechanism for sheet body and manufacture of its carrier belt - Google Patents

Abstract

PURPOSE:To reliably check generation of static electricity between carrier belts and a sheet body, and simplify manufacturing work of these carrier belts. CONSTITUTION:A carrying unit 44 is provided with plural endless carrier belts 66 to carry a reading document 16 in the arrow X direction, and these carrier belts 66 have a gas permeable woven fabric structure into which polyester fiber 72 is longitudinally and laterally woven, and conductive fiber 74 mixedly exists in the polyester fiber 72. Therefore, generation of static electricity between the carrier belts 66 and the reading document 16 can be checked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet body conveying mechanism for adsorbing and holding a sheet body on a conveying belt and conveying the same, and a method for manufacturing the conveying belt.

[0002]

2. Description of the Related Art For example, in an image reading apparatus, read originals (sheets) stacked on an original placing section are taken out one by one through an original conveying mechanism and conveyed and positioned at the image reading section. After the image information carried on the read document is read by the image reading unit, it is discharged to the document discharging unit.

Similarly, in an image recording apparatus, an unexposed film (sheet body) which is usually laminated on a film mounting portion is used.
Are taken out one by one through the film transport mechanism and are transported and positioned to the image recording section, and after the desired image is recorded on the unexposed film in this image recording section, the film after the recording is transferred to the film discharging section. It is configured to be discharged to.

In this case, a suction box (suction means) connected to an endless conveyor belt and a vacuum generator in order to convey a read original sheet or a sheet member such as an unexposed film to the image reading section or the image recording section. ) Is widely used. In this transport mechanism, a suction box is arranged inside a transport belt having a plurality of ventilation holes, and a sheet body is adsorbed onto the transport belt via the suction box under the action of a vacuum generator. While being held, the conveyor belt is configured to travel around and convey the sheet body to a predetermined scanning position.

[0005]

By the way, in the above-mentioned conveying mechanism, the resist pin is provided for accurately positioning the sheet body in correspondence with the scanning position, and the sheet conveyed through the conveying belt. The body is brought into contact with the resist pin to be positioned and held. At that time, since the conveyor belt is traveling around, the conveyor belt and the sheet body rub against each other. Here, in particular, since the conveyor belt is made of a synthetic resin material, static electricity is easily generated between the conveyor belt and the sheet body, and wrinkles or deformations are caused in the sheet body due to the static electricity. The problem has been pointed out.

The present invention is intended to solve this kind of problem, and it is possible to reliably prevent the generation of static electricity between the conveyor belt and the sheet body, and to perform the manufacturing operation of the conveyor belt. An object of the present invention is to provide a sheet body transport mechanism and a method for manufacturing a transport belt thereof that can be simplified.

[0007]

In order to achieve the above-mentioned object, the present invention provides a transport belt which can travel for transporting a sheet body, and a suction for holding the sheet body by suction on the transport belt. A transport mechanism including means,
The transport belt has a breathable woven fabric structure in which fibers are woven, and conductive fibers are mixed in the fibers.

Further, the present invention is a method of manufacturing a conveyor belt for adsorbing and holding a sheet body for conveyance under the action of suction means, in which fibers mixed with conductive fibers are woven to form a tubular woven fabric. A step of covering the cut portion of the tubular woven cloth and impregnating the tubular woven cloth with an adhesive in the circumferential direction; cutting at the cut portion of the tubular woven cloth; Obtaining a covered conveyor belt.

[0009]

In the sheet body conveying mechanism according to the present invention, since the conveying belt has the breathable woven fabric structure, the sheet body can be surely adsorbed and held on the conveying belt via the suction means. Moreover, since conductive fibers are mixed in the conveyor belt, static electricity is not generated even when the conveyor belt and the sheet body rub against each other.

Further, in the method for manufacturing the conveyor belt of the sheet conveying mechanism according to the present invention, the cut portion of the tubular woven cloth is cut while the tubular woven cloth is impregnated with the adhesive in the circumferential direction. As a result, a conveyor belt whose ends are covered with the adhesive is obtained. Therefore, the fibers are not loosened from the cut end of the conveyor belt, and the treatment of the cut end of the conveyor belt is simplified at once.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The sheet carrying mechanism and the method for manufacturing the carrying belt according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1 and FIG.
Indicates a plate making machine. In the plate making machine 10, an image reading device and an image recording device are practically integrated, and an original conveying device 14 is detachably mounted on a base 12 constituting the plate making machine 10. It

The document feeder 14 has a document placing mechanism 18 for accommodating a plurality of read documents (sheets) 16 in a stacked manner.
And the read original 1 stacked on the original placing mechanism 18.
Separation / conveyance mechanism 20 for taking out the sheets 6 one by one, and the read originals 16 thus taken out are held at a photographing position and the read originals 1
An image pickup unit 22 for recording the image information carried on the plate 6 on a plate material to perform platemaking, and an original document discharge unit 24 for reversing and accumulating the read original document 16 after photographing. As shown in FIG. 2, the read original 16 is a backing sheet 16 such as paper or film.
It includes a pasted document having a cut-out portion such as characters and pictures, and a pasted portion 16b such as a photograph at a predetermined position on a.

The document placing mechanism 18 is provided with a plurality of read documents 1
A stacking table 26 that can be lifted up and down in a state where 6 are stacked, and a slide guide 28 that is slidable in the arrow Y direction corresponding to the size (for example, A5 to B3 size) of the read document 16.
And a guide member 30 for aligning the rear end side of the read document 16 in the take-out direction (see FIG. 1).

As shown in FIG. 2, the separating / conveying mechanism 20 includes:
A take-out roller 32 for taking out the uppermost read original 16 on the placing table 26 in the direction of arrow X by a predetermined distance from the stacking position;
A feed roller 34 that further feeds the read document 16 that has been taken out in the direction of arrow X, and the feed roller 34.
And the topmost read original 1 which is arranged facing the
6, the return roller 36 for returning the other read original 16 sent out integrally with the sheet 6 to the stacking position, and the read original 1 sent out.
6 is provided to the photographing unit 22 side.

As shown in FIG. 3 and FIG.
In the present embodiment, the image pickup table 42 is movable up and down via the elevating means 40, and the reading document 16 sent out from the separating and conveying mechanism 20 in the arrow X direction is conveyed to a predetermined image pickup position of the image pickup table 42. A conveying unit 44 as a sheet conveying mechanism, a registration unit 46 for positioning and holding the read document 16 at the predetermined photographing position, and the photographing table 42 are raised to press the read document 16. And a pressure bonding glass 47 for ensuring the flatness of the read document 16.

The elevating means 40 includes a motor 48, and a belt / pulley 50 is connected to a drive shaft of the motor 48 via a speed reducing means 49. Rotating shafts 50a and 50b are connected to the belt / pulley 50, and the first and second rotating shafts 52a and 52b are respectively separated by a predetermined distance from each other.
Pinion 56a, 56b and second pinion 58a, 58b
Is fixed. First pinion 56a, 56b and second
The pinions 58a and 58b are first rack members 60a and 60b fixed to the lower portion of the imaging table 42 in the vertical direction.
While being engaged with the second rack members 62a and 62b, the imaging table 42 is guided in the vertical direction via a plurality of guide rods 64 that are oriented in the vertical direction.

The transport unit 44 is provided between the rotary shafts 65a and 65b for transporting the read original 16 in the direction of the arrow X, and the plurality of endless transport belts 6 are freely circulated.
6 and first and second suction boxes 68 and 70 as suction means for sucking and holding the read original 16 on the conveyor belt 66. The first suction box 68 is a fixed-type suction means provided close to the separation and transport mechanism 20 side, and the second suction box 70 is provided.
Is a movable suction means corresponding to the size of the read document 16 and movable back and forth in the direction of arrow X via a driving means (not shown).

As shown in FIG. 5, the conveyor belt 66 has a breathable woven structure in which polyester fibers 72 are woven vertically and horizontally, and conductive fibers 74 are mixed in the polyester fibers 72. Both ends of the conveyor belt 66 are subjected to edge treatment (described later) with silicone rubber 76 as an adhesive. As shown in FIG. 4, the conveyor belt 66 includes a motor 77 connected to the rotating shaft 65a.
It is configured to travel around via. Vent holes may be formed in the conveyor belt 66, if necessary.

At the reading position of the read document 16, the non-woven fabric 78 is provided between the second suction box 70 and the upper side of the conveyor belt 66 and the cushion sponge rubber 80 is provided.
It is arranged by being adhered to the upper part of. This non-woven fabric 78
Is to prevent the second suction box 70 side from penetrating the read document 16 and being photographed, and the conveyor belt 66, the non-woven fabric 78, and the sponge rubber 80 are set to the same color (for example, white). There is.

The registration unit 46 includes a plurality of first registration pins 82 aligned in the arrow X direction and positionally adjustable in the arrow Y direction, and a plurality of first registration pins 82 aligned in the arrow Y direction and swingable in the arrow X direction. 2 resist pins 84. First
The second resist pins 82 and 84 are attached to the pressure-bonded glass 47.
It is configured to be able to descend via the pressing force of the pressure-bonded glass 47 when it comes into contact with.

As shown in FIG. 2, the document discharge section 24 is disposed near the end of the endless belt 66 and is provided with a fulcrum 90.
It includes a reversing tray 92 which is swingable via a fixed tray 94 which is inclined with respect to the vertical direction.

The plate making machine 10 has illuminations 96a to 96d for irradiating the read original 16 with illumination light at the photographing position of the photographing section 22.
A reflection mirror 98 which is arranged above the pressure-bonding glass 47 at a predetermined angle, and a camera 100 which directly records the image of the read document 16 reflected by the reflection mirror 98 onto a predetermined recording medium. .

Next, a method of manufacturing the conveyor belt 66 according to this embodiment will be described.

First, as shown in FIG.
The tubular woven fabric 110 having a breathable woven fabric structure is formed by weaving the polyester fibers 72 mixed with each other in the vertical and horizontal directions. The tubular woven fabric 110 is formed to be long in the axial direction so as to correspond to the plurality of conveyor belts 66.

Therefore, in the axial direction of the tubular woven fabric 110, a plurality of cut portions 112 are provided with a predetermined length, and the cut portions 112 are covered to the circumferential direction of the tubular woven fabric 110. The silicon rubber 76 is impregnated into a band shape (see FIG. 7).
Next, the cut portions 112 of the tubular woven fabric 110 are cut, whereby a plurality of conveyor belts 66 having both ends covered with the silicone rubber 76 (edge-treated) are obtained.

In this case, in this embodiment, the tubular woven fabric 1 is previously prepared.
After each cut portion 112 of 10 is impregnated with the silicone rubber 76, the cut portion 112 is covered with the silicone rubber 7
It is cut integrally with 6. Therefore, silicone rubber 76
The cut portion 112 of the tubular woven fabric 110 without impregnating the
Unlike conventional methods for cutting the
Therefore, it is possible to reliably prevent the polyester fiber 72 from being loosened, and it is possible to obtain the effect that the manufacturing operation of the conveyor belt 66 can be performed efficiently and easily at once.

Next, the conveyor belt 6 manufactured as described above.
The operation of the transport unit 44 according to the present exemplary embodiment including No. 6 will be described in relation to the document transport device 14 incorporating the transport unit 44.

First, a plurality of read originals 1 are placed on the mounting table 26.
After 6 are stacked and accommodated, the placing table 26 is moved up and down to adjust the uppermost read document 16 to a predetermined take-out height position. Then, as shown in FIG. 2, the uppermost read original 16 is taken out by a predetermined distance in the direction of arrow X under the rotating action of the take-out roller 32, and further, the sending-out roller 3
It is sent to the pair of transport rollers 38 under the rotating action of 4, and is transported to the side of the photographing unit 22 via the pair of transport rollers 38.

In the photographing section 22, the first suction box 68 is driven and the original document 16 is adsorbed and held by the conveyor belt 66, and the conveyor belt 66 is circulated under the action of the motor 77. Further, the second suction box 70 is driven, and the read document 16 is conveyed by the conveyor belt 66.
It is adsorbed and held in the direction of the arrow X, and is held at a predetermined photographing position by being regulated by the first resist pin 82 and the second resist pin 84 on the photographing table 42.

Therefore, the motor 4 constituting the elevating means 40
8 is driven to rotate the first and second rotary shafts 52a and 52b via the belt / pulley 50, the first pinions 56a and 56b and the second pinions 58a and 58b are rotated to mesh with the first and second pinions 56a and 56b. 1 rack member 60a, 6
0b and the 2nd rack member 62a, 62b raises the imaging stand 42. As a result, the read document 16 is pressed and held by the pressure-bonding glass 47, and in this state, illumination light is emitted from the illuminations 96a to 96d that configure the plate making machine 10, and the camera 100 is energized and stuck to the read document 16. The embedded portion 16b of the embedded image, characters and photograph is directly recorded on a plate material (not shown) to produce a printing plate.

When the above photographing work is completed, the elevating means 4
The photographing table 42 is lowered via 0, the read original 16 is conveyed in the direction of the arrow X via the conveying belt 66, and once dropped and supplied to the reversing tray 92, the reversing tray 92 is centered around the fulcrum 90. By being inverted in the direction of the arrow, the read originals 16 are stacked and stored in the fixed tray 94.

By the way, in the photographing section 22, the read original 16 is read.
A resist unit 46 including a first resist pin 82 and a second resist pin 84 is provided in order to hold the image sensor at a predetermined photographing position on the photographing table 42. The second resist pin 84 comes into contact with the leading end of the read document 16 that is adsorbed and held by the conveyor belt 66 and conveyed in the arrow X direction, and the first resist pin 82 moves in the arrow Y direction to move the read document. Position 16 in the direction of arrow Y. that time,
The read document 16 and the transport belt 66 rub against each other, and static electricity is easily generated particularly between the transport belt 66 formed of the polyester fiber 72 and the read document 16 having the mount 16a such as paper or film. .

However, in this embodiment, since the conductive fibers 74 are mixed in the polyester fibers 72, it is possible to reliably prevent the above-mentioned generation of static electricity. As a result, it is possible to obtain the effect that the read document 16 can be arranged with high accuracy at a predetermined photographing position without causing wrinkles or the like.

Moreover, the conveyor belt 66 has a breathable woven structure in which the polyester fibers 72 are woven vertically and horizontally. Therefore, the first and second suction boxes 6
Under the action of 8, 70, the read original 16 is transferred to the conveyor belt 6
6 can be effectively adsorbed and held.

Further, the non-woven fabric 78 and the cushion sponge rubber 80, which are arranged between the second suction box 70 and the upper side of the conveyor belt 66, serve as the conveyor belt 66.
Is set to the same color as. Therefore, when the read document 16 having the mount 16a such as a film is placed at the photographing position, it is possible to reliably prevent the occurrence of the stripe-shaped show-through corresponding to the shape of the conveyor belt 66, for example. become. As a result, there is an effect that a high quality image reading operation is performed.

In the present embodiment, the document conveying device 14 which is mounted on the plate making machine 10 and conveys the read document 16 has been described, but the invention is not limited to this, and the document is photoelectrically converted by a CCD or the like. It is also possible to use an image reading device that reads the image information or an image recording device that reproduces desired image information on a film or the like.

[0038]

EFFECTS OF THE INVENTION According to the sheet conveying mechanism and the method of manufacturing the conveying belt of the present invention, the following effects can be obtained.

Since the conveyor belt has the breathable woven fabric structure, the sheet member can be surely adsorbed and held on the conveyor belt via the suction means. Moreover, since the conductive fibers are mixed in the transport belt, static electricity is not generated in the transport belt even when the transport belt and the sheet body rub against each other. Thereby, the sheet body can be conveyed with high accuracy.

Further, according to the present invention, in the state where the tubular woven cloth is impregnated with the adhesive in the circumferential direction, the cut portion of the tubular woven cloth is cut, and the conveyor belt whose end is covered with the adhesive is provided. can get. Therefore, the fibers are not loosened from the cut end of the transport belt, and the cut end treatment of the transport belt can be performed quickly and reliably at once.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a state in which a document conveying device incorporating a sheet body conveying mechanism according to an embodiment of the present invention is mounted on a plate making machine.

FIG. 2 is a front view of a schematic configuration of the document feeder.

FIG. 3 is a front explanatory view of the sheet body transport mechanism.

FIG. 4 is a plan view of the sheet body transport mechanism.

FIG. 5 is a partial perspective explanatory view of a conveyor belt constituting the sheet body conveying mechanism.

FIG. 6 is an explanatory diagram of a method for manufacturing the conveyor belt.

FIG. 7 is an explanatory diagram of a method of manufacturing the conveyor belt.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Plate-making machine 14 ... Original document conveying device 16 ... Read original document 18 ... Original document placing mechanism 20 ... Separation conveying mechanism 22 ... Photographing section 24 ... Original document ejecting section 26 ... Mounting table 40 ... Elevating means 42 ... Photographing table 44 ... Conveying unit 46 ... resist unit 47 ... pressure bonding glass 68, 70 ... suction box 72 ... polyester fiber 74 ... conductive fiber 76 ... silicone rubber 78 ... non-woven fabric 80 ... sponge rubber

Claims (2)

[Claims] 1. A transport mechanism comprising: a transport belt that can travel for transporting a sheet body; and a suction unit that sucks and holds the sheet body on the transport belt, wherein the transport belt is a fiber. A transport mechanism for a sheet body, which has a breathable woven fabric structure in which a conductive fiber is mixed with the fiber. 2. A method for manufacturing a conveyor belt for adsorbing and holding a sheet body to convey the sheet body under the action of a suction means, the step of weaving fibers mixed with conductive fibers to form a tubular woven fabric, A step of covering a cut portion of the tubular woven cloth and impregnating the tubular woven cloth with an adhesive in the circumferential direction; and a step of cutting at the cut portion of the tubular woven cloth and covering an end portion with the adhesive. A method of manufacturing a conveyor belt for a sheet body conveyor mechanism, comprising: a step of obtaining a belt.