JP3292597B2 - Sheet transport device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying apparatus capable of switching between an automatic conveying mode in which a plurality of stacked sheets are automatically conveyed one by one and a manual feeding mode in which sheets are manually fed. .

[0002]

2. Description of the Related Art For example, when a printing plate is prepared by a plate making machine, read originals (sheets) stacked on an original mounting portion
Are taken out one by one via a conveyance system and conveyed to an image reading unit, and are positioned by the image reading unit. After the image information carried on the read document is read by the image reading unit, the image information is discharged to a document discharge unit. Is used.

The document feeder usually includes a roller which is driven to rotate as a transfer system, and the roller is brought into sliding contact with the uppermost read document stacked thereon to rotate so that the read document is collected. It is configured to automatically convey each sheet.

[0004]

However, while the reading operation is being performed while the stacked reading originals are automatically conveyed, another reading original may need to be read urgently. At this time, it is conceivable to employ a manual feeding-only transport system in order to supply the read original to the image reading unit by manual feeding. However, a problem has been pointed out that since a transport system dedicated to manual feeding is incorporated in addition to the automatic transport system, the size and cost of the entire apparatus are increased.

An object of the present invention is to solve this kind of problem, and eliminates the need for a dedicated transport system for manually feeding a sheet body, thereby making it possible to easily perform a document transport which can simplify the apparatus configuration. It is intended to provide a device.

[0006]

In order to achieve the above object, the present invention provides a mounting mechanism for stacking a plurality of sheets, and a sheet slidingly contacting the stacked uppermost sheet. Take-out means for taking out the body by a predetermined distance from the stacking position, sending-out means for sending out the taken-out sheet body, and disposed opposite to the send-out means, and integrated with the sent-out uppermost sheet body. A return unit for returning another sheet body returned to the stacking position, a unit that is mounted with the takeout unit and the delivery unit, and that is swingable upward to directly feed the sheet body to the delivery side. , The unit swings upward
Is displaced according to the swinging motion of the unit,
Covering the drive system of the recording and unloading means and the sending means
The holding plate, and the unit together with the holding plate are in an open posture.
When the unit is displaced up to
Characterized in that it comprises a stop member, the (according to claim 1, wherein
Invention) . Further, the present invention laminates a plurality of sheet bodies.
The mounting mechanism is in sliding contact with the stacked uppermost sheet body.
The sheet body from the stacking position by a predetermined distance.
Feeding means for feeding out the taken-out sheet body.
Dispensing means, disposed opposite to the sending means,
The sheet is sent out integrally with the sent top sheet.
And return means returning the other sheet body in the stacking positions, wherein
When the take-out means and the sending-out means are mounted
In the meantime, the sheet body is manually supplied to the sending side directly.
Unit that can swing upwards and the unit
When the unit is swung to the side, it changes according to the swing operation of the unit.
Driving the take-out means and the sending-out means
A holding plate covering the system, and the unit together with the holding plate
When the unit is displaced to the open position, the unit is
A locking member for stopping and when the unit is swung downward
A driving force to said take-out means and the delivery hand stage
When the unit is swung upward while transmitting
The driving force to the take-out means and the sending-out means
A drive mechanism capable of interrupting the transmission of, and characterized in that it comprises
(The invention according to claim 2). Furthermore, the present invention
A mounting mechanism for stacking the sheets of the sheet, the outermost is the laminated
Sliding contact with the upper sheet, and moving the sheet from the stacking position
And retrieval means for retrieving a predetermined distance, said retrieved
Sending means for sending out the sheet body, and the sending hand
The uppermost sheet that is sent out and disposed opposite the step
The other sheet body sent out integrally with the body
Return means, the take-out means and the delivery
And a sheet is mounted on the sending side.
A unit that can swing upward to supply the body directly
And the return unit has the unit below.
When the sheet is returned to the stacking position when it is swung to
Drive the return means in the direction
The sheet is conveyed to the sending side when it is swung to
Switching drive for driving the return means in the direction
Moving means are connected (claim 3
invention).

[0007]

In the sheet conveying apparatus according to the present invention, the removing means slides on the uppermost sheet and removes the sheet from the stacking position. Then, the sheet is automatically moved under the action of the feeding means. Conveyed. And the unit
By simply swinging upward together with the take-out means and the sending-out means, the sheet body can be directly fed manually. As a result, the operation of switching between the automatic transport mode and the manual feed mode is quickly performed, and a transport system dedicated to the manual feed mode is not required.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sheet conveying apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1 and FIG.
Indicates a plate making machine. The plate making machine 10 is actually configured such that an image reading device and an image recording device are integrally formed, and a document conveying device 14 according to the present embodiment is provided on a base 12 that constitutes the plate making machine 10. It is detachably attached.

The document feeder 14 includes a plurality of documents 1 to be read.
6, a separation / conveyance unit 22 that takes out one sheet from the topmost read document 16 that has been stacked and conveys it to the photographing unit 20, and a read document that has been photographed by the photographing unit 20. And a document discharge unit 24 for stacking and storing the document stack 16. As shown in FIG. 2, the read original 16 is a mount 1 such as paper.
6A includes a pasted document having a cut-out portion for characters and pictures and a pasted portion 16b for photographs and the like at a predetermined position.

The original placing section 18 is provided with a plurality of read originals 16.
1 is slidable in the direction of the arrow Y corresponding to the size of the read document 16 (for example, A5-B3 size), as shown in FIG. A movable movable guide member 28 and a detachable rear end guide member 3 for guiding the rear end of the read document 16
0 is provided.

As shown in FIGS. 2 to 4, the separation / conveyance section 22, which is a main part of the present embodiment, has both ends which intersect in the conveyance direction (the direction of arrow X) of the uppermost read document 16 on the mounting table 26. A take-out roller (take-out means) 32 which comes into sliding contact with (a part avoiding the pasting portion 16b) and takes out the read document 16 by a predetermined distance from the stacking position, and slides in contact with the leading end of the taken-out read document 16 in the transport direction. A feed roller (feeding means) 34 for feeding the read document 16 further in the transport direction, and another read document which is disposed to face the feed roller 34 and is fed integrally with the sent uppermost read document 16. A return roller (return means) 36 for returning the original 16 to the stacking position, a transport roller 38 for transporting the sent original 16 to the photographing unit 20 side, and sliding contact with the transport roller 38 It comprises a nip roller 40, the take-out roller 32, feed with rollers 34 and the nip roller 40 is mounted, and a swingable unit 42 upward to the imaging unit 20 side directly supplied manual insertion document reading 16.

The unit 42 swings upward together with the pair of brackets 44 on which the take-out roller 32, the feed roller 34, and the nip roller 40 are mounted, and with the respective brackets 44 in response to manual feeding of the read document 16. And a holding mechanism 48 for holding the cover member 46 in an open position.

Each bracket 44 is, as shown in FIG.
The first and second rotating shafts 50 and 52 disposed parallel to each other in the direction of the arrow Y support the position of the first and second rotating shafts 50 and 52 so as to be adjustable. This first
And both ends of the second rotating shafts 50 and 52 are supported by a cover member 46, and the cover member 46
It can swing about the rotation shaft 50 as a fulcrum. Bracket 4
A first swinging member 56, which is swingably mounted on the second rotation shaft 52 as a fulcrum and has a delivery roller 34 rotatably mounted via a shaft 55 on the tip end side of the rotation, engages with the fourth rotation member 52. Shaft 55
The take-out roller 32 is rotatably mounted via a shaft 57 on a tip end side of the second swing member 58 that swingably engages with the second swing member 58. The feed roller 34 is rotatable with respect to a shaft 55 via a bearing (not shown), and the take-out roller 32 is integrally fixed to a shaft 57.

As shown in FIG. 4, a first motor 60 is connected to a first rotating shaft 50 via a clutch mechanism (described later), and the first rotating shaft 50 is rotated via the first motor 60. Is fixed to the first gear 62. First gear 62
Is a second gear 6 rotatably disposed on the second rotating shaft 52.
The belt 70 is engaged with a first pulley 66 provided integrally with the second gear 64 and a second pulley 68 fixed to the shaft 55. A pin 72 is fixed to the second pulley 68 at an eccentric position, and the pin 72 fits into an arcuate hole 74 formed in the second swinging member 58. The second rocking member 58 has a second locking plate portion for abutting against a first locking plate portion 56 a provided on the first rocking member 56 to press the second rocking member 58 upward. 58a are formed.

The second rotating shaft 52 transmits a driving force to the take-out roller 32 and the sending-out roller 34 when the unit 42 is swung downward, and the unit 42
A drive mechanism 76 that can shut off transmission of a driving force to the take-out roller 32 and the feed-out roller 34 when is swung upward is connected.

As shown in FIG. 5, the driving mechanism 76
A return roller 36 is connected to a drive shaft 80 connected to the second motor 78 via a switching drive unit 82. The switching drive unit 82 includes a drive pulley 84 with a one-way clutch that transmits torque only in the direction of arrow A, and a drive gear 86 with one-way clutch that transmits torque only in the direction of arrow B (the direction opposite to the direction of arrow A). And a torque limiter 90 connected to the return roller 36 rotatably mounted on the drive shaft 80 via a bearing 88.

The belt 92 engaged with the driving pulley 84 is
The first and second driven pulleys 94a and 94b are engaged with the first and second driven pulleys 94a and 94b, and the first and second driven pulleys 94a and 94b are fixed to the first and second driven shafts 96a and 96b. A driven gear 98 meshing with the driving gear 86 is provided on the first driven shaft 96a.
A gear 102 that meshes with a gear 100 fixed to the transport roller 38 and transmits a rotational force to the transport roller 38 is fixed. A gear 104 is fixed to the second driven shaft 96b, and a gear 106 meshed with the gear 104 removably meshes with a gear 108 fixed to the second rotating shaft 52.

As shown in FIG. 4, the second rotating shaft 52 has
In order to transmit the torque of the second motor 78, the third pulley 1
10 is fixed, and a belt 114 is engaged with the fourth pulley 112 provided integrally with the delivery roller 34 and the third pulley 110. A fifth pulley 116 is provided on the shaft 57 to which the take-out roller 32 is fixed, and a belt 118 is engaged with the fifth pulley 116 and the fourth pulley 112.

The first and second rotating shafts 50, 52 are formed with key grooves 50a, 52a extending in the axial direction, and the first gear 62, the third pulley 110 and the like are connected to the key grooves 50a, 52a. By fixing the bracket to the key 52a, each bracket 44 can be fixed at a predetermined position on the first and second rotating shafts 50 and 52 in accordance with the size of the document 16 to be read.

As shown in FIG. 3, the bracket 44 includes
A solenoid 120 is mounted, and a leaf spring 121 fixed to the solenoid 120 engages with the nip roller 40 to move the nip roller 40 up and down.

As shown in FIGS. 6 and 7, the holding mechanism 4
8 is a bent-shaped holding plate 122 located on the first and second motors 60 and 78 side and supported by the cover member 46;
A guide plate 126 having a guide groove 124 for guiding the holding plate 122 is provided. When the cover member 46 is opened, the holding plate 122 opens the first and second motors 60 and 7.
A guide pin 128 that fits in the guide groove 124 is fixed to an end of the guide pin 128 corresponding to a position that covers the drive system on the eighth side. The guide groove 124 forms a predetermined trajectory, and a locking groove 124 a for locking the guide pin 128 and holding the cover member 46 in the open position communicates with the upper end side thereof. The holding plate 122 is provided with a grip portion 129 capable of pulling the holding plate 122 upward to separate the guide pin 128 from the locking groove 124a.

As shown in FIG. 3, a manual resist plate 127 is swingably disposed inside the cover member 46. The resist plate 127 holds the read original 16 at the time of manual insertion.
Is swung downward so as to prevent the insertion of the airbag, and is configured to be able to ascend via the solenoid 120.

As shown in FIG. 8, a coupling 132 constituting a clutch mechanism 130 is mounted on an end of the first rotary shaft 50 via a key (not shown) so as to be movable only in the axial direction. A circumferential groove 134 is formed on the outer periphery of the large diameter of the coupling 132.
Are formed, and the guide pins 13 fitted in the circumferential grooves 134 are formed.
6a and 136b are fixed to the rocking tip side of the rocking member 138. The swinging member 138 has a locking portion 138a protruding upward on the swinging tip side provided with the guide pin 136a, and the first and second swinging members 138 for applying a pulling force in opposite directions. A second spring 140a,
One end of 140b is engaged. The other end of the first spring 140a is fixed in the separation / conveyance section 22, while the second spring 140a is fixed.
The other end of b is fixed to the solenoid 142. The first spring 140a has a larger spring constant than the second spring 140b.

A coupling pin 144 is provided on the end surface of the large diameter portion of the coupling 132. The coupling pin 144 is provided on a driven pulley 146 rotatably mounted on the first rotating shaft 50 via a bearing (not shown). It can be fitted into the side hole 148. The belt 152 is engaged with the driven pulley 146 and the driving pulley 150 fixed to the first motor 60.

The coupling 132 has a fixing / release mechanism 1
It is detachable from the driven pulley 146 via 54. The fixing / releasing mechanism 154 includes a fixing pin 158 that fits into a hole 156 formed in the cover member 46 and can fix the cover member 46 in a closed posture.
Are disposed in the holder 160 and urged toward the hole 156 via a spring 162.

A ring member 164 is attached to the end of the fixing pin 158.
Is pinned, and one end of the link 166 is engaged with the fixing pin 158. The other end of the link 166 is engaged with a swing lever 168, and the swing lever 168 is pressed downward by the push button 170. A fixing member 172 is provided near the holder 160, and the fixing member 17
The pawl portion 176 of the fixed member 172 at the tip end of the swing is provided via a spring 174 provided on the swing center side of the swing member 13.
8 engaging portion 138a. A substantially central portion of the fixing member 172 has a bent portion 17 that can freely contact the ring member 164.
8 are formed.

As shown in FIG. 2, the photographing section 20 transports the read document 16 sent out from the separation / transport section 22 in the arrow X direction to a predetermined photographing position on the photographing table 180. The first and second suction boxes 1 are connected to a plurality of endless belts 182 which run around for carrying out the scanning operation and vacuum generating means (not shown) for sucking and holding the read document 16 on the endless belt 182.
84 and 186, and a pressure glass 188 for pressing the reading document 16 by raising the imaging table 180 to secure the flatness of the reading document 16.

The original discharge section 24 is provided with the endless belt 18.
2 and a reversible tray 192 which is disposed close to the end of the second tray 2 and which can swing via a fulcrum 190, and an inclined tray 194 which is inclined with respect to the vertical direction.

The plate making machine 10 includes illuminations 196a to 196 for illuminating the reading original 16 with illumination light at the photographing position of the photographing section 20.
d, a reflection mirror 198 disposed at a predetermined angle above the pressure glass 188, and a camera 200 for directly recording an image of the read document 16 reflected by the reflection mirror 198 on a predetermined recording medium. Prepare.

Next, the operation of the thus configured document feeder 14 will be described in relation to the plate making machine 10.

First, after the original conveying device 14 is mounted on the base 12 of the plate making machine 10, a plurality of originals 16 to be read are stacked and accommodated on the mounting table 26 with their photographing surfaces facing upward. Then, when the mounting table 26 is raised and lowered and the uppermost read original 16 is adjusted to a predetermined take-out height position, the second motor 78 constituting the drive mechanism 76 is driven to rotate.

The drive shaft 80 is connected via the second motor 78.
Rotates in the direction of arrow A in FIG.
Are rotated in the direction of arrow A and integrated with the first and second driven pulleys 94a and 94b via the belt 92.
The driven shafts 96a and 96b rotate. The rotation of the first driven shaft 96a is transmitted to the conveyance roller 38 via the gears 102 and 100, while the rotation of the second driven shaft 96b is
The rotation is transmitted to the second rotation shaft 52 via the fourth, fourth, and 108.

As shown in FIG. 4, the rotation of the second rotary shaft 52 in the direction of the arrow is transmitted to the delivery roller 34 via the third pulley 110, the belt 114 and the fourth pulley 112, and further transmitted to the belt 118 and the fifth It is transmitted from the shaft 57 to the take-out roller 32 via the pulley 116. In addition,
As shown in FIG. 3, the feed roller 34 slides on the return roller 36 and rotates in the direction of the arrow, so that a torque equal to or greater than the set value of the torque limiter 90 acts on the return roller 36. As a result, the return roller 36 slides on the feed roller 34 and rotates in the direction of arrow B.

Here, the take-out roller 32 is disposed above the document 16 to be read (see position P _{2 in} FIG. 3), and the first rotary shaft 50 is moved by the first motor 60 in FIG. , The first gear 6
2, the second pulley 68 rotates in the direction of the arrow via the second gear 64, the first pulley 66, and the belt 70. For this reason, the pin 72 of the second pulley 68 swings in the hole 74 of the second swinging member 58 and lowers the second swinging member 58 by its own weight. As a result, the take-out roller 32 swings downward about the shaft 55 while rotating and comes into sliding contact with the uppermost read document 16 on the mounting table 26, and the read document 16 is taken out by a predetermined distance in the arrow X direction. (in FIG. 3, the reference position P _1).

The original 16 to be read is further fed by the feed roller 3
While being conveyed in the direction of the arrow X under the rotation of 4, the first motor 60 is driven to rotate in the direction opposite to the above, and the first rotating shaft 50 rotates in the direction opposite to the arrow. Therefore, the second swing member 58 swings upwardly to pivot the shaft 55, take-out roller 32 is separated from the read document 16 reached the position P ₁ to position P _2. Then, the read original 16 is transported by the transport rollers 38.
Is transported in the direction of the arrow X while being held by the nip roller 40, and the first motor 60 is further driven to rotate so that the second locking plate 58 a of the second rocking member 58
6 comes into contact with the first locking plate portion 56a. Therefore, the second swing member 58 swings upward by the second rotary shaft 52 as a fulcrum, feed roller 34 is separated from the read document 16 (see in FIG. 3, the position P _3).

As the delivery roller 34 swings upward, the load acting on the return roller 36 is released. Thereby, the return roller 36 is moved in the direction indicated by the arrow A in FIG.
Is rotated in the direction, and the other read originals 16 taken out in close contact with the uppermost read original 16 are returned to the stacking position side, and the double feed of the read originals 16 is prevented.

In the photographing section 20, the first suction box 184 is driven to transfer the read original 16 to the endless belt 1.
The endless belt 18 is held by suction at 82.
2 is driven around. On the other hand, the solenoid 120 is driven, and the nip roller 40 is separated from the transport roller 38 via the leaf spring 121.

Next, in the photographing section 20, the second suction box 186 is driven, and the read document 16 is suction-held by the endless belt 182 and placed at a predetermined photographing position on the photographing table 180. Then, with the imaging table 180 raised and the read original 16 pressed and held by the pressure glass 188, the illuminations 196a to 196 constituting the plate making machine 10 are set.
Illumination light is emitted from 6d, the camera 200 is energized, and the pasted portions 16b of images, characters, photographs, and the like pasted on the read original 16 are directly recorded on a plate material (not shown), Is created.

After the photographing is completed, the read original 16 is
After 0 is lowered, it is conveyed in the direction of the arrow X through the endless belt 182, and once dropped and supplied to the reversing tray 192, the reversing tray 192 is reversed around the fulcrum 190 in the direction of the arrow, whereby The read document 16 is stacked and accommodated on the inclined tray 194 with its photographing surface facing downward.

As described above, when the operation of automatically transporting the read originals 16 stacked on the mounting table 26 to a predetermined position on the photographing table 180 (automatic transport mode) is performed, There is a case where the reading document 16 needs to be read urgently. At this time, in the document feeder 14 according to the present embodiment, the cover member 46 constituting the unit 42 is connected to the first rotating shaft 50 so that another read document 16 is manually supplied to the photographing unit 20 (manual feed mode). It is swung upward as a fulcrum (see the position of the two-dot chain line from the position of the solid line in FIG. 7).

That is, as shown in FIG. 8, when the push button 170 is pressed, the swing lever 168 swings downward to pull the link 166 in the direction of the arrow, so that the fixing pin 158 is Hole 156 against the resilience of
Break away from As a result, the cover member 46 is released from the fixing action by the fixing pin 158, and can swing upward.

On the other hand, when the fixing pin 158 is displaced, the ring member 164 fixed thereto moves in the direction away from the cover member 46 with respect to the holder 160. Therefore, the ring member 164 is bent at the bent portion 178 of the fixing member 172.
The fixing member 172 swings against the spring 174 to separate the claw portion 176 from the locking portion 138a of the swing member 138 (see FIG. 9). The swing member 138 swings in a direction away from the driven pulley 146 via the elastic force of the first spring 140a, and guide pins 136a, 136b
The coupling 132 in which is fitted moves in the direction of the arrow along the first rotation shaft 50. Therefore, the coupling 13
The second connecting pin 144 is connected to the side hole 14 of the driven pulley 146.
8 and the driven pulley 146 is
And the opening and closing operation of the cover member 46 described later is smoothly performed.

In this state, when the cover member 46 is swung upward, the holding plate 122 constituting the holding mechanism 48 moves under the guide action of the guide pins 128 and the guide grooves 124 to move the first and second motors. The drive systems 60 and 78 (including the clutch mechanism 130 and the fixing / release mechanism 154) are closed (see FIG. 6). Then, the guide pin 128 is fitted into the locking groove 124a, and the cover member 46 is fixed and held at the open position. The nip roller 4 is attached to the cover member 46.
The cover member 46 swings upward so that the nip roller 40
Separate from.

On the other hand, when the cover member 46 is swung upward, the second rotating shaft 52 having both ends supported by the cover member 46 is pivoted about the first rotating shaft 50 as the fulcrum.
Swings upwards integrally. Therefore, the gear 108 of the second rotating shaft 52 separates from the gear 106, and the second rotating shaft 5
2 is separated from the drive mechanism 76 to prevent transmission of rotational force from the drive mechanism 76 to the take-out roller 32 and the delivery roller 34. Thereby, when another reading document 16 is manually fed, the take-out roller 32 and the sending-out roller 34, which are easy for the operator's fingers to touch, do not rotate, so that there is an effect that the manual feeding operation is performed easily and smoothly. .

Further, when the cover member 46 is swung upward, as shown in FIG.
Is meshed with the second gear 64 of the second rotating shaft 52, so that the second gear 64 rotates in the direction opposite to the arrow when the second rotating shaft 52 swings. Therefore, the first pulley 66
Also, the second swinging member 58 swings upward via the second pulley 68, and the take-out roller 32 swings upward with respect to the bracket 44, so as not to interfere with the manual feeding operation of another read original 16.

Next, as shown in FIG.
When the drive shaft 80 rotates in the direction of arrow B via 8, the return roller 36 rotates in the direction of arrow B, and the drive gear 86 rotates in the direction of arrow B. Further, the driving gear 8
The first and second driven shafts 96a, 96b rotate in the direction of the arrow integrally with the first and second driven pulleys 94a, 94b via the driven gear 98 meshing with the gear 6. First driven shaft 96
The rotation of the transfer roller 3 is performed via the gears 102 and 100.
8, the rotation of the second driven shaft 96b is not transmitted to the second rotation shaft 52 because the gear 106 and the gear 108 are separated. Thus, the return roller 36 and the transport roller 38 are driven to rotate in a direction in which the read document 16 is sent to the photographing unit 20 side.

Then, the manual reading document 16 is moved by the photographing unit 20 under the guiding action of the return roller 36 and the transport roller 38.
Is directly supplied to the end of the endless belt 182, the other read document 16 comes into contact with the registration plate 127 and is positioned. Next, when the solenoid 120 is driven and the registration plate 127 is retracted upward, the manual feed document 16 is sucked and held by an endless belt 182 constituting the photographing unit 20, and is moved to a predetermined photographing position of the photographing unit 20. It is transported and subjected to a photographing process.

As described above, in the present embodiment, when the reading original 16 is supplied in the manual feed mode, the unit 42 is swung upward integrally with the take-out roller 32, the feed roller 34, and the nip roller 40. Then, the return roller 36 to which the rotational force has been applied in the direction of arrow A in the automatic conveyance mode rotates in the direction of arrow B via the switching drive means 82, and guides the manual feed document 16 together with the conveyance roller 38 to the photographing unit 20 side. are doing. As a result, the operation of switching between the automatic transport mode and the manual feed mode can be performed quickly and easily, and the same drive mechanism 76 can cope with the automatic transport mode and the manual feed mode. Accordingly, a transport system dedicated to the manual feed mode is not required, and an effect that the configuration of the entire document transport device 14 is simplified can be obtained.

By the way, when shifting from the manual feed mode to the automatic transport mode again, the holding plate 122 is
After the guide pin 128 is detached from the locking groove 124a so as to lift the end of the cover member 46, the cover member 46 is swung downward. When the cover member 46 is disposed in the closed position, as shown in FIG. 8, the solenoid 142 is driven, and the swing member 138 is driven by the driven pulley 1 via the second spring 140b.
It swings to the 46 side. Therefore, the coupling pin 144 of the coupling 132 fits into the side hole 148 of the driven pulley 146, and the claw 176 of the fixing member 172 engages with the locking portion 138a to hold the rocking member 138. . Further, the fixing pin 158 is fitted into the hole 156 of the cover member 46 via the spring 162, and the cover member 46 is fixed in the closed position.

In this embodiment, the description has been made with reference to the document feeder 14 which is mounted on the plate making machine 10 and transports the read document 16. However, the present invention is not limited to this. It is also possible to use an image reading device that reads the desired image information or an image recording device that reproduces the desired image information on a film or the like.

[0052]

According to the sheet conveying apparatus of the present invention, the following effects can be obtained.

By simply swinging the unit upward integrally with the take-out means and the sending-out means, the sheet can be directly fed manually. As a result, the operation of switching between the automatic transport mode and the manual feed mode is quickly and easily performed, and a transport system dedicated to the manual feed mode is not required, thereby simplifying the configuration of the entire transport apparatus.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a state in which a document feeder according to an embodiment of the present invention is mounted on a plate making machine.

FIG. 2 is a schematic configuration diagram of the document feeder.

FIG. 3 is a schematic diagram illustrating the configuration of a separation / conveyance unit included in the document conveyance device.

FIG. 4 is an explanatory perspective view of a main part of the separation and transport unit.

FIG. 5 is a perspective explanatory view of a drive system of the separation and transport unit.

FIG. 6 is an explanatory perspective view of a main part of a unit constituting the separation / conveyance unit.

FIG. 7 is an operation explanatory view when the unit is swung.

FIG. 8 is an explanatory perspective view of a clutch mechanism and a fixing / releasing mechanism constituting the separation / conveyance unit.

FIG. 9 is an operation explanatory view of the clutch mechanism and the fixing / releasing mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Plate making machine 12 ... Base 14 ... Document conveyance device 16 ... Original document 18 ... Document placement part 20 ... Photographing part 22 ... Separation conveyance part 24 ... Document discharge part 26 ... Placement table 32 ... Take-out roller 34 ... Delivery roller 36 ... Return roller 38 ... Convey roller 40 ... Nip roller 42 ... Unit 44 ... Bracket 46 ... Cover member 48 ... Holding means 50,52 ... Rotating shaft 56,58 ... Swing member 60 ... Motor 76 ... Driving mechanism 78 ... Motor 82 ... Switching Drive means 130 ... Clutch mechanism 132 ... Coupling 138 ... Swing member 146 ... Driving pulley 154 ... Fixing / releasing mechanism 158 ... Fixing pin 164 ... Ring member 182 ... Endless belt

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI G03G 15/00 516 G03G 15/00 516 (72) Inventor Tsuyoshi Fukawata 1005 Koizono, Ayase-shi, Kanagawa Fuji Micro-Graphics Co., Ltd. (56) References JP-A-56-23137 (JP, A) JP-A-61-171746 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65H 3/00-3 / 68 B65H 11/00

Claims (3)

(57) [Claims] A stacking mechanism for stacking a plurality of sheet bodies; a take-out means for slidingly contacting the stacked top-most sheet body to take out the sheet bodies a predetermined distance from a stacking position; Sending means for sending out a sheet body; returning means disposed opposite to the sending means and returning another sheet body sent out integrally with the sent uppermost sheet body to the stacking position; A unit that is mounted with a take-out unit and the sending-out unit, and that is swingable upward to directly feed the sheet body to the sending-out side, and that the unit swings upward when the unit swings upward.
Displaced in accordance with the moving operation, and
A holding plate that covers the drive system of the ejecting means, and the unit is displaced to an open position together with the holding plate.
And a locking member for locking the unit in an open position when the sheet is conveyed. 2. A stacking mechanism for stacking a plurality of sheets, and said sheet slidingly contacting said stacked uppermost sheet.
Take-out means for taking out the body only a predetermined distance from the stacking position
When the delivery means feeding said picked sheet member, disposed opposite to said delivery means, fed the
Other sheet bodies sent out integrally with the top sheet body
Returning means to the stacking position, and the take-out means and the sending-out means are mounted.
At the same time, feed the sheet directly to the sending side
A unit that is swingable upward to swing the unit up and down when the unit swings upward.
Displaced in accordance with the moving operation, and
A holding plate that covers the drive system of the ejecting means, and the unit is displaced to an open position together with the holding plate.
A locking member for locking the unit in the open position, and transmitting a driving force to the take-out means and the sending-out means when the unit is pivoted downward,
Sheet conveying apparatus characterized by comprising a driving mechanism capable of interrupting the transmission of driving force to said take-out means and said feeding means when said unit is swung upwardly. 3. A mounting mechanism for stacking a plurality of sheet bodies, and said sheet slidingly contacting said stacked uppermost sheet body.
Take-out means for taking out the body only a predetermined distance from the stacking position
When the delivery means feeding said picked sheet member, disposed opposite to said delivery means, fed the
Other sheet bodies sent out integrally with the top sheet body
Returning means to the stacking position, and the take-out means and the sending-out means are mounted.
At the same time, feed the sheet directly to the sending side
And pivotable unit upward to include a, the said return means, before the direction sheet over preparative body when the unit is swung downward is returned to the stacking position
While driving the serial return means, characterized in said switching driving means for the sheet material to drive the return means in a direction that is conveyed to the delivery side it is connected when the unit is swung upwardly Sheet conveying device.