JP4217117B2 - Transfer object transport apparatus, and image forming apparatus including the transfer object transport apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
More specifically, the present invention relates to an image forming apparatus including the transfer object transport apparatus and the transfer object transport apparatus. More specifically, the transfer unit stays in a transfer path to form a bundle of a plurality of sheets. Transfer apparatus for transferring the image to the image forming apparatus, and a copying machine including the transfer object transfer apparatus for performing post-processing of the transfer object after the image is formed and a copier for forming a toner image by an electrophotographic method The present invention relates to an image forming apparatus such as a facsimile machine, a printer, or a multifunction machine of these.
[0002]
[Prior art]
In a conventional transfer body transport apparatus and an image forming apparatus including the transfer body transport apparatus, the sheet on which the image is formed is discharged after a discharge stacking unit for discharging and stacking or an image is formed and discharged. The paper is conveyed to a post-processing apparatus that performs sorting, binding, stacking, and the like.
If the device stops due to, for example, a paper jam in the transport path of the paper transported to the discharge stacking unit or post-processing device due to a paper misfeed or jam, the next image Jam processing that requires removal of the remaining paper after stopping in the conveyance path where jamming has occurred in order to prepare for post-processing operations for sorting, binding, stacking, etc., after forming and image formation Work was occurring.
In the jam processing operation for removing the remaining paper, the jam processing due to the tear of the remaining paper cannot be performed, the transport roller, the transport guide, etc. are damaged or damaged, and the quality of the formed image is deteriorated. Various devices for preventing the above have been proposed and known (see Japanese Patent Laid-Open Nos. 2001-42750, 2002-6671, 8-333033, 11-65350, etc.).
Further, in the sheet post-processing apparatus that discharges the sheet conveyed from the image forming apparatus as a sheet bundle, the sheet conveying path is switched to a different conveying path from the main conveying path by the switching unit, and based on the information from the image forming apparatus. It has been proposed by the inventor of the same applicant to change the number of sheets that flow backward in the sheet conveying path to prevent malfunction of sheet retention regardless of the processing mode and the number of processed sheets.
[0003]
However, in order to perform jam processing when a jam occurs while the paper is staying in another conveyance path in which the sheet conveyance path is switched to a conveyance path different from the main conveyance path by the switching unit, It was necessary to pull out a sheet bundle in another conveyance path and perform jam processing. If an attempt is made to pull out a sheet bundle during the jam processing, the load on the pair of conveyance rollers is applied to the sheet in another conveyance path. At this time, if the paper is forcibly pulled out in order to pull out the paper, the paper is torn and causes a remaining piece of paper. In addition, due to these loads, the sheet is pulled out without the pair of transport rollers in another transport path rotating. Then, the sheet is pushed out against the conveyance roller by the pressure applied by the driven roller of the conveyance roller pair in another conveyance path and pulled out.
Further, if this is frequently performed, the surfaces of the conveying roller pair are scraped, and not only the durability is lowered, but the quality of the formed image may be deteriorated by post-processing.
It should be noted that in order to release the applied pressure of the driven roller of the pair of conveyance rollers in another conveyance path when a jam occurs while the paper is staying in another conveyance path, the configuration is not simple and much consumption is required. Electricity was also needed.
Therefore, the conventional transfer body transport apparatus and the image forming apparatus including the transfer body transport apparatus malfunction the stay of the transfer body paper depending on the processing mode and the number of processing sheets, and the transfer body paper If the paper on the transfer medium that has flowed back in another transport path switched from the main transport path to another transport path is switched by the switching means, another transport will occur Due to the pressure applied by the transport roller pair in the path, the load to be pulled out during jam processing is large, the paper of the transfer medium is torn, the remaining piece of paper of the transfer medium, and the transport roller pair deteriorates, and the surfaces of the transport roller pair As a result, the durability of the formed image is reduced, the quality of the formed image is deteriorated by post-processing, and the configuration is not simple and power consumption increases.
[0004]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to solve such problems. In other words, it is possible to prevent malfunction of staying of the transfer object regardless of the processing mode and the number of processing sheets, and the transfer path for transferring the transfer object is switched to a transfer path different from the transfer path by the switching unit. If a jam occurs while the transferred material that has flowed back in the transport path is stagnant, the load to be pulled out during jam processing is reduced, and the transferred object in another transport path is transported without tearing. Durability of rollers is increased, high-quality image formation and post-processing are performed, simple structure, small size, conveyance load is reduced, power consumption is low, resources are saved, and jam processing is performed safely and easily It is an object of the present invention to provide a conveying device and an image forming apparatus including the transferred object conveying device.
[0005]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention according to claim 1 is directed to a transfer object transporting apparatus in which a transfer object stays in a transport path to form a bundle of a plurality of sheets and transports it to a processing unit. A transfer means for transferring the transferred object transferred from the transfer means to the processing unit, a switching means for guiding the transferred object flowing back through the transfer path to another transfer path, and the switching. A conveying roller pair that conveys the object to be transferred guided and retained in the other conveying path so as to overlap a next transferred object conveyed to the conveying path, and a pressurizing unit that pressurizes the conveying roller pair And a pressure releasing means for releasing the pressure applied by the pressurizing means;The release state maintaining means, which is provided in the pressure release means and maintains the release state of the applied pressure when the drive power supply is turned on, is rotatable and has a convex locking portion on the outer periphery. A pushing member that pushes out the locking member with a member, a cam surface that fits with a cam surface formed on one end face of the locking member, and the locking member that is rotated while being pushed out by the pushing member A holding member having a holding part for holding the locking partIt is a transfer body conveying apparatus consisting ofSpecialIt is a sign.
  According to a second aspect of the present invention, in the transferred object conveying apparatus according to the first aspect,AboveThe other transport path is a transfer body transport device composed of a curved portion.SpecialIt is a sign.
  According to a third aspect of the present invention, there is provided the transferred object conveying apparatus according to the second aspect,AboveAnother transport pathAboveIt is a transfer medium transport device in which a pair of transport rollers is arranged on the curved portion.SpecialIt is a sign.
  The present invention of claim 4 providesAny one of 1 to 3In the transferred object transport apparatus according to claim 1,AboveThe pressurizing means is a transfer medium transport device comprising a spring for pressurizing the driven roller.SpecialIt is a sign.
  The present invention of claim 5 claimsAny one of 1 to 4Described inCoveredIn the transfer material transport device,The pressurizing means includes a movable member that generates a pressurizing force by a spring,The pressure release means isAboveWith a force larger than the pressing force of the movable member by the spring of the pressurizing meansAboveIt is a transferred object transport device comprising a solenoid for releasing the pressure applied to the movable member of the pressurizing means.SpecialIt is a sign.
  The present invention of claim 6 is the transfer object transport device according to claim 5,AboveSolenoidAboveThe transfer object transfer device is arranged at a position where the movable member moves in parallel.SpecialIt is a sign.
  The present invention of claim 7 claimsAny one of 1 to 6In the transferred object transport apparatus according to claim 1,AboveThe pressurizing force release means is a transfer medium conveying device that turns on the drive power supply by stopping the transfer medium when a jam occurs.SpecialIt is a sign.
[0006]
ContractClaim8The invention of claimAny one of 1 to 7In the transferred object transport apparatus according to claim 1,AboveThe pressure release means is to turn off the drive power by opening the cover.SpecialA transfer object transporting device.
  Claim9The invention of claimAny one of 1 to 8In the transferred object transport apparatus according to claim 1,AboveThe release state maintaining means is a transfer object transport device that releases the maintenance of the release state of the applied pressure by closing the cover.SpecialMake.
ContractClaim10The present invention relates to an image forming apparatus that performs post-processing of a transfer target after forming an image, and an image forming unit that forms an image on the transfer target, and a transfer target on which an image is formed by the image forming unit A processing section that performs post-processing, and a transfer body on which an image is formed by the image forming means is conveyed to the processing section.9The image forming apparatus includes the transfer medium conveying apparatus according to any one of the above.
  Claim11The invention of claim10In the image forming apparatus described in item 1, the image forming unit is an image forming apparatus that forms a toner image by an electrophotographic method.SpecialIt is a sign.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, a transfer target transport apparatus 0 that retains a transfer target in a transport path to form a bundle of a plurality of sheets and transports it to a processing unit is a transfer target on which a toner image is formed by an image forming apparatus 100. Sorting of a pair of carry-in rollers 1b arranged at the carry-in entrance 1a of the carry-in means 1 for carrying in and carrying the transfer paper (P) and a transfer target (P) after image formation carried from the carry-in roller pair 1b; A conveyance path 3 that conveys to a processing unit 2 that performs post-processing operations such as binding and stacking, and a switching claw of a switching unit 5 that guides a transfer target (P) that flows back through the conveyance path 3 to another conveyance path 4. A pair of transport rollers 6 that transports the transferred object (P) that is guided and stays in the other transport path 4 by the switching claw 5 so as to overlap the next transferred object (P) that is transported to the transport path 3. And the driven roller 6b that forms the nip portion with the conveying roller 6a It consists of a spring 7a of the pressurizing means 7 and a solenoid 8a of the pressurizing release means 8 that releases the pressurizing force of the pressurizing means 7, and malfunctions in staying of the transfer object (P) regardless of the processing mode and the number of processed sheets. In the other transport path 4 in which the transport path 3 in which the transfer target (P) is transported is switched to the transport path 3 and the separate transport path 4 by the switching claw 5. When a jam occurs while the transferred object (P) that has flowed backwards, the load to pull out the transferred object (P) during the jam processing is reduced, and the transferred object (P in the other transport path 4 is reduced). The durability of the transport roller 6a and the driven roller 6b is increased without tearing, high-quality image formation and post-processing are performed, the configuration is simple, and jam processing is performed.
Since the separate conveyance path 4 is composed of the curved portion 4a, it is possible to provide a small transfer medium conveyance device 0 that is space-saving and small.
Further, since the conveyance roller 6a and the driven roller 6b are arranged in the curved shape portion 4a of the other conveyance path 4, it is possible to provide the transferred object conveyance device 0 in which the conveyance load is reduced. .
[0008]
The transferred object (P) output from the image forming apparatus 100 is carried and conveyed by the carry-in entrance 1a and the carry-in roller pair 1b, and is conveyed to the conveying roller pair 3a in the conveying path 3 to be transferred (P). The switching claw of the switching means 5 is rotated in the direction of the arrow (A) shown in the figure by the moving force, and passes through the transport path 3 secured thereby to form an image by the transport roller pair 3b and the transport roller pair 3c. In order to perform post-processing operations such as sorting, binding, stacking, and the like of the subsequent transfer target (P), they are conveyed into the processing tray 2d of the processing unit 2.
The transferred body (P) transported and carried into the processing section 2 falls in its own direction in the direction of the arrow (B), so that the transport direction is aligned at the rear end fence 2a.
After the time when the rear end of the transfer object (P) is detected by the sensor 3d in advance and the conveyance direction of the transfer object (P) can be aligned, the width direction is aligned by the alignment fluence 2b.
By repeating this operation, a large number of transferred objects (P) are aligned one by one.
When the final transfer object (P) is aligned, the transfer object (P) bundle aligned by the stapler 2c is bound, and the discharge belt 2e in the processing tray 2d rotates in the direction of the arrow (C) shown in the figure. Then, the transfer object (P) bundle is discharged from the processing tray 2d in the direction indicated by the arrow (D) by the discharge claw 2f attached thereto.
The discharged transfer target (P) bundle is discharged and stacked on the tray 13 by the discharge roller 11 and the driven roller 12.
The tray 13 has a mechanism (not shown) that can be moved up and down according to the number of stacks.
The follower roller 12 is attached to a conveyance guide plate 14 and is illustrated with a fulcrum 15 as a center so that the same conveyance force can be obtained even if the thickness of a bundle of transferred objects (P) to be conveyed changes. It is configured to be rotatable in the direction of arrow (E), and is configured to pressurize the discharge roller 11 with its own weight of the transport guide plate 14.
The above is the operation in the case where the transfer object (P) bundle is one part.
[0009]
In FIG. 2 to FIG. 5, when the number of transfer target (P) bundles is two or more, the image forming apparatus 100 uses the final transfer target (P) of the part and the first transfer target of the next part. The copy is continuously sent to the transfer object conveying apparatus 0 at the same interval as the other cases with the copy interval with the body (P).
At that time, a signal is sent from the image forming apparatus 100 to the control unit 16 of the transferred object transport apparatus 0. The contents of the signal sent to the control unit 16 of the transferred object transport apparatus 0 include the number of transferred objects (P), the transport speed, the processing mode, and the like. These signals are received by the control unit 16 of the transfer medium transport device 0, so that the number of sheets to be transferred (P), the acceleration point, the acceleration linear velocity, the counterflow point, the counterflow linear velocity, etc. It has come to be decided.
The carry-in roller pair 1b is in the direction indicated by the arrow (F), the carry roller pair 3a in the carry path 3 is in the direction shown by the arrow (G), and the carry roller pair 3b in the carry path 3 is in the direction shown by the arrow (H). ) Direction, the conveyance roller pair 3c of the conveyance path 3 rotates in the direction of the arrow (I) shown in the drawing, and the first sheet of the two parts of the transfer target (P) is conveyed.
The first sheet of the two parts of the transfer target (P) is transported at an increased transport speed based on the detection information of the sensor 1c.
Further, the sensor 1c takes a control timing by a pulse count, a timer or the like after detecting the rear end of the first sheet of the transfer object (P), and is transported to a backflow position (see FIG. 2).
[0010]
Next, when it is necessary to reversely transfer the transfer target (P) based on a signal from the image forming apparatus 100, the conveyance roller pair 3b of the conveyance path 3 is reversed to the direction indicated by the arrow (J). Further, the transport roller pair 3c of the transport path 3 is reversely rotated in the direction indicated by the arrow (K), and the transport roller 6a is also reversely rotated in the direction shown by the arrow (L).
Then, the transfer body (P) is guided and transported to the separate transport path 4 as shown in the figure by the switching claw of the switching means 5, and the paper end of the transfer body (P) is moved to the sensor 3d. If it is detected, the slow-down control is performed to stop it (see FIG. 3).
Next, as shown in FIG. 4, the second transfer object (P) is conveyed by the carry-in roller pair 1 b and the conveyance roller pair 3 a of the conveyance path 3, and the tip of the transfer object (P) is moved to the above-described position. It is detected by the sensor 3d.
When the sensor 3d detects the leading edge of the transfer object (P), as shown in FIG. 5, the pair of conveyance rollers 3b of the conveyance path 3 is in the direction of the arrow (H) shown in FIG. The conveyance roller pair 3c rotates in the direction of the arrow (I) shown in the figure, and the conveyance roller 6a rotates in the direction of the arrow (M) in the figure to convey the two transfer target bodies (P) in a stacked state.
At that time, if the staying number of the transfer target (P) is smaller than the staying number sent by the signal from the image forming apparatus 100, the same operation as that for the first transfer target (P) is performed. Will repeat.
Then, the process is repeated until the staying number of transferred objects (P) received from the image forming apparatus 100 is reached, and the transferred objects (P) are discharged to the processing tray 2d of the processing unit 2 in a state where two or more transferred objects (P) are stacked. To do.
[0011]
6 to 9, the pressure means 7 pressurizes the driven roller 6b in the direction of the arrow (N) shown in the figure by the spring 7a, and reliably conveys the transfer target (P) with a simple configuration. Do.
The solenoid 8a fixed to the main body frame 0a of the pressurizing force release means 8 is more than the pressurizing force in the direction indicated by the arrow (N) of the spring 7a whose one end is held by a holding member 7b integral with the main body frame 0a. A large force in the direction of the arrow (O) shown in the figure pushes the movable member 7c back through the arm 8b in the direction opposite to the direction of the arrow (N) in the figure, thereby applying a pressure force in the direction of the arrow (N) shown in the figure. The load for pulling out the transfer object (P) at the time of jam processing can be surely reduced by reliably releasing it.
The solenoid 8a fixed to the main body frame 0a smoothly pushes the movable member 7c back in the direction opposite to the arrow (N) direction shown in the figure, and moves to the position of the main body frame 0a, for example, as shown in FIGS. As shown in the side view, it is arranged in the middle of the plurality of conveying roller pairs 6.
The applied pressure in the direction indicated by the arrow (N) of the spring 7a is applied to the arm 8b attached to the solenoid 8a in the direction indicated by the arrow (O), which is greater than the applied pressure in the direction indicated by the arrow (N) of the spring 7a. Is lifted in order to release the pressure that forms the nip of the driven roller 6b of the conveying roller pair 6 with respect to the conveying roller 6a (see FIGS. 6 and 8).
When the solenoid 8 a is operated by the control unit 16, when the transfer target (P) is thus transported to the transfer target transporting device 0, the inside of the image forming apparatus 100 or the transfer target is performed. This is a case where a jam occurs in the transport device 0.
When a jam occurs and the information is sent to the control unit 16, the control unit 16 detects the transferred object (P) by the sensor 4b mounted on the curved shape part 4a of another conveyance path 4. Check whether it is done.
When the object to be transferred (P) is detected by the sensor 4b, the control unit 16 turns on the solenoid 8a, and the spring 7a that forms the nip of the driven roller 6b with respect to the conveying roller 6a. The applied pressure is released (see FIGS. 7 and 9).
[0012]
When the front door of the cover 10 shown in FIG. 1 is opened at the time of jam processing, the power supply of the transferred object conveyance device 0 is automatically turned off for the safety by the control unit 16 at that time. Thus, the solenoid 8a is also turned off.
However, even when the solenoid 8a is turned on (ON), the driven roller 6b can be turned off even if the power saving resource-free state (OFF) is turned off by the locking mechanism of the solenoid 8a and the release state maintaining means 9. The pressure applied by the spring 7a that forms a nip with respect to the conveying roller 6a is released to the state shown in FIGS.
When the jam processing is completed and the front door of the cover 10 shown in FIG. 1 is closed again, the solenoid 8a is once turned on by the control unit 16.
At that time, when the transfer target (P) is not detected by the sensor 4b mounted on the curved shape portion 4a, the solenoid 8a also has the lock mechanism of the release state maintaining means 9 that is about to be turned off. The paper is automatically released and the jam processing is easily performed. Again, the pressing means 7 presses the driven roller 6b again in the direction of the arrow (N) by the spring 7a to transfer the image. The body (P) is transported reliably with a simple configuration.
[0013]
10 to 15, the locking mechanism of the released state maintaining means 9 is rotatable in the direction of the arrow (Q) shown in FIGS. 14 and 15 and has a convex locking portion 9 a on the outer periphery.₁A locking member 9a for lifting the arm 8b and a cam surface 9a formed on one end surface of the locking member 9a.₂Cam surface 9b mated with₁And a pushing member 9b connected to a plunger (not shown) of the solenoid 8a for pushing the locking member 9a by the solenoid 8a, and an arrow (Q shown in FIGS. 14 and 15 while being pushed by the pushing member 9b. ) The locking portion 9a of the locking member 9a rotated in the direction.₁9c for holding₁A spring that forms a nip of the driven roller 6b with respect to the conveying roller 6a even in a resource-saving off state that does not use electric power, with a simple and compact configuration. The pressure applied by 7a can be maintained in a released state (see FIGS. 7 and 9).
When the solenoid 8a shown in FIG. 10 is in an OFF state and the transfer target (P) is smoothly transported, it waits in this way (see FIGS. 6 and 8). .
The locking member 9a is attached so as to be rotatable in the direction of the arrow (Q) shown in FIGS. 14 and 15, and lifts the arm 8b.
The push-out member 9b is connected to a plunger (not shown) of the solenoid 8a and is rotated in the direction of the arrow (Q) shown in FIGS. 14 and 15 by pushing up the locking member 9a. Yes.
The holding member 9c is fixedly attached, and the locking portion 9a of the locking member 9a rotates by sliding the locking member 9a and the pushing member 9b on the inner periphery thereof.₁The holding portion 9c₁It comes to hold in.
[0014]
When a jam occurs in the image forming apparatus 100 or in the transferred object transport apparatus 0 when the transferred object (P) is transported to the transferred object transport apparatus 0, it is detected. When the solenoid 16a is turned on by the control unit 16 (see FIGS. 7 and 9), as shown in FIG. 11, the push-out member 9b attaches the locking member 9a to the holding member 9c. Is slid and lifted and pushed in the direction of the arrow (R) shown in the figure.
At that time, as shown in the figure, the cam surface 9a formed on one end surface of the locking member 9a.₂And the surface 9b of the pushing member 9b.₁Are engaged, and the locking member 9a rotates in the direction of the arrow (Q) shown in FIG.
When the locking member 9a is rotated, the locking portion 9a of the locking member 9a is rotated.₁Is the holding portion 9c formed on the inner periphery of the holding member 9c.₁And is fixed and locked as shown in FIG.
At this time, the solenoid 8a is in a resource-saving off state that does not use power.
Thereafter, when the jamming process is completed and the solenoid 8a is turned on, the pushing member 9b slides the locking member 9a on the inner periphery of the holding member 9c again as shown in FIG. Then, the locking member 9a is lifted and pushed out in the direction of the arrow (R) shown in the figure, and the locking member 9a rotates in the direction of the arrow (Q) shown in FIG. If the transfer target (P) is not detected by the sensor 4b mounted on the curved portion 4a, the state returns to the state shown in FIG.
If the transfer object (P) is detected by the sensor 4b mounted on the curved portion 4a, the solenoid 8a is once turned off (OFF) and turned on again ( ON) and jam processing is performed.
[0015]
In the flowchart of FIG. 16, the transfer object transport device 0 automatically releases the pressure applied by the pressurizing unit 7 by the pressurizing force canceling unit 8, so that the transferred object ( The above-described transport path 3 on which the transfer object (P) is transported is switched to the transport path 3 and the separate transport path 4 by the switching claw 5 while preventing the malfunction of the retention of P). When a jam occurs while the transferred object (P) that has flowed back in the conveying path 4 stays, the load of pulling out the transferred object (P) during the jam processing is reduced, and the other conveying path 4 The durability of the transport roller pair 6 is increased without tearing the transfer material (P), and high-quality image formation and post-processing are performed. This is performed by the control unit 16 as follows.
That is, it is determined whether or not a jam is caused in the transferred object transport apparatus 0 or the image forming apparatus 100 when the transferred object (P) is transferred from the transfer means 1 (step 1). (Step 2) If the jam does not occur in the transferred object transport apparatus 0 or the image forming apparatus 100, the process ends at the end, but the transferred object transport apparatus 0 or the image forming process ends. If a jam has occurred in the apparatus 100, the sensor 4b determines whether or not there is a transfer target (P) in the other transport path 4 (step 3), and the inside of the other transport path 4 If there is no transfer object (P), the process ends at the end, but if there is a transfer object (P) in the other transport path 4, the solenoid 8a is turned on (step 4). finish.
[0016]
In the flowchart of FIG. 17, the transfer object transport device 0 automatically releases the pressure applied by the pressurizing unit 7 by the pressurizing release unit 8, so that the transfer target ( The above-described transport path 3 on which the transfer object (P) is transported is switched to the transport path 3 and the separate transport path 4 by the switching claw 5 while preventing the malfunction of the retention of P). When a jam occurs while the transferred object (P) that has flowed back in the conveying path 4 stays, the load of pulling out the transferred object (P) during the jam processing is reduced, and the other conveying path 4 The durability of the transport roller pair 6 is increased without tearing the transfer material (P), and high-quality image formation and post-processing are performed. The controller 16 can automatically and safely perform the following: That.
Jam processing of the transfer object (P) in the other conveyance path 4 is started (step 11), it is determined whether the front door of the cover 10 is opened (step 12), and the cover 10 If the front door is open, the solenoid 8a is turned off (step 13), and it is determined whether or not the jam processing of the transfer object (P) in the other transport path 4 is completed (step 13). 14) If the jam processing of the transfer object (P) in the other transport path 4 has been completed, it is determined whether the front door of the cover 10 is closed (step 15), and the cover 10 If the front door is closed, the solenoid 8a is turned on (step 16), and the sensor 1c of the carry-in means 1 determines whether or not the transfer object (P) is detected (step). 17), above If the sensor 1c of the carry-in means 1 detects the transfer object (P), the solenoid 8a is turned off (OFF) (step 18), and then the solenoid 8a is turned on again (step 19). ) To (Step 12), but if there is no detection of the transfer target (P) by the sensor 1c of the loading means 1 in (Step 17), the solenoid 8a is turned off (Step 20), and the end End with.
[0017]
  In FIG. 18, the image forming apparatus 100 that performs post-processing of the transfer target after the image is formed includes an image forming unit 101 that forms an image on the transfer target (P), and an image formed by the image forming unit 101. The processing unit 2 that performs post-processing of the formed transfer object (P), and the transfer object (P) on which an image is formed by the image forming unit 101 is conveyed to the processing unit 2.9The transfer object transport device 0 according to any one of the above items is provided, and the transfer object (P) is prevented from malfunctioning by staying in the transfer object (P) regardless of the processing mode or the number of processes. A jam occurs while the transfer target (P) that has flowed back in the other conveyance path 4 switched from the conveyance path 3 to the other conveyance path 4 by the switching claw 5 in the conveyance path 3 to be conveyed is retained. When this occurs, the load of pulling out the transfer target (P) during the jam processing is reduced, and the transfer target (P) in the separate transfer path 4 is not torn and the durability of the transport roller pair 6 is improved. In addition, high-quality image formation and post-processing are performed, and the jam processing can be performed safely with a simple configuration, low power consumption, and resource saving.
[0018]
A copying machine for forming a toner image by the electrophotographic method of the image forming apparatus 100 is provided with a document image reading device 102 for reading an image of a document (O) at the top.
On the other hand, a transferred body supply device 103 for placing the image forming means 101 and supplying the transferred body (P) is disposed in the lower part.
The original image reading device 102 uniformly charges the charger 101b by causing the laser diode of the image writing means 101c to emit light by an electrophotographic method in which a toner image is formed with the image data of the original image to be read (0). An electrostatic latent image is formed on the drum-shaped photosensitive drum of the image carrier 101a.
The electrostatic latent image formed by causing the laser diode of the image writing means 101c to emit light is visualized by a developing device 101d to form a toner image.
The toner image visualized by the developing device 101d is transferred to the transferred material (P) conveyed from the transferred material supply device 103 by the transfer device 101e.
The toner image transferred to the transfer medium (P) by the transfer device 101e is heated and pressed by the fixing device 101f, and then is carried by the carry-in means 1 of the transfer-material transfer device 0 by the paper discharge roller 101g. It is sent out to the port 1a, and the transfer target (P) is retained to form a bundle of a plurality of sheets, which are conveyed to the processing unit 2 for post-processing and stored.
On the other hand, the drum-shaped photosensitive drum of the image carrier 101a transfers residual toner adhered on the drum-shaped photosensitive drum of the image carrier 101a after transferring the toner image to the upper transfer body (P). Then, it is scraped off and cleaned by the cleaning member 101h to prepare for image formation in the next process.
Accordingly, malfunction of staying of the transfer target (P) is prevented in advance regardless of the processing mode and the number of processed sheets, and the transfer path 3 on which the transfer target (P) is transferred is changed by the switching claw 5 to the transfer path. 3 and the other transfer path 4 switched to the other transfer path 4, when a jam occurs while the transfer target (P) that has flowed back in the other transfer path 4 stays, the transfer target (P) at the time of jam processing The pulling load is reduced, and the durability of the transport roller pair 6 is increased without breaking the transfer target (P) in the separate transport path 4, and high-quality image formation and post-processing are performed. Thus, it is possible to provide the image forming apparatus 100 including the transferred object transport apparatus 0 that has a simple configuration, consumes less power, saves resources, and safely performs jam processing.
[0019]
【The invention's effect】
  Since the present invention is configured as described above, according to the first aspect of the present invention, it is possible to prevent a malfunction of staying of the transferred body in advance regardless of the processing mode and the number of processed sheets. When a jam occurs while a transferred object that has flowed back in another transport path switched to a transport path different from the transport path is switched by the switching means, the transferred object at the time of jam processing The durability of the transport roller and the driven roller of the transport roller pair is increased without breaking the transfer target in another transport path, and high-quality image formation and post-processing are performed. Easy to configureSmallsoLow power consumption and resource savingIt is now possible to provide a transfer object transport apparatus that performs jam processing.
  According to the second aspect of the present invention, it is possible to prevent malfunction of staying of the transfer object regardless of the processing mode and the number of processed sheets, and the transfer path for transferring the transfer object is separated from the transfer path by the switching unit. When a jam occurs while the transferred material that has flowed back in another transport path switched to the transport path is staying, the load for pulling out the transferred material during jam processing is reduced, and the target in the other transport path is reduced. The transfer material conveying apparatus that has improved durability of the conveying roller and the driven roller of the conveying roller pair without tearing the transfer member, performs high-quality image formation and post-processing, has a simple configuration, and performs jam processing. Can now be provided.
  According to the third aspect of the present invention, it is possible to prevent malfunction of staying of the transfer object regardless of the processing mode and the number of processed sheets, and the transfer path for transferring the transfer object is separated from the transfer path by the switching unit. When a jam occurs while the transferred material that has flowed back in another transport path switched to the transport path is staying, the load for pulling out the transferred material during jam processing is reduced, and the target in the other transport path is reduced. The durability of the transport roller and driven roller of the transport roller pair is increased without tearing the transfer body, high-quality image formation and post-processing are performed, and the configuration is simple and compact, reducing the transport load and performing jam processing. It is now possible to provide an apparatus for transferring a transferred material.
  According to the fourth aspect of the present invention, it is possible to prevent a malfunction of staying of the transfer object regardless of the processing mode and the number of processes, and to reliably carry the transfer object with a simple configuration. When a jam occurs while a transferred material that has flowed back in another transport path switched to a transport path different from the transport path is switched by the switching means, the transfer target at the time of jam processing Reduces the load of pulling out the body, increases the durability of the transport roller and the driven roller of the pair of transport rollers without breaking the transfer target in another transport path, and performs high-quality image formation and post-processing Thus, it is possible to provide a transfer medium conveying apparatus that has a simple configuration and that performs jam processing.
[0020]
According to the fifth aspect of the present invention, it is possible to prevent a malfunction of staying of the transfer object regardless of the processing mode and the number of processes, and to reliably carry the transfer object with a simple configuration. When a jam occurs while a transferred material that has flowed back in another transport path switched to a transport path different from the transport path is switched by the switching means, the transfer target at the time of jam processing The load for pulling out the body is reliably reduced, and the durability of the transport roller and driven roller of the transport roller pair is increased without breaking the transferred material in another transport path, and high-quality image formation and post-processing are performed. As a result, it is possible to provide a transfer medium conveying apparatus that has a simple configuration and that performs jam processing.
According to the sixth aspect of the present invention, it is possible to prevent malfunction of staying of the transferred object in advance regardless of the processing mode and the number of processed sheets, and to reliably transfer the transferred object with a simple configuration. When a jam occurs while a transferred material that has flowed back in another transport path switched to a transport path different from the transport path is switched by the switching means, the transfer target at the time of jam processing The load to pull out the body is surely reduced smoothly, the durability of the transport roller and the driven roller of the pair of transport rollers is increased without breaking the transfer target in another transport path, and high-quality image formation is achieved. Post-processing has been performed, and it is possible to provide a transfer medium transport apparatus that has a simple configuration and that performs jam processing.
According to the seventh aspect of the present invention, it is possible to prevent malfunction of staying of the transfer object regardless of the processing mode and the number of processes, and the transfer path for transferring the transfer object is different from the transfer path by the switching unit. If a jam occurs while the transferred material backflowed in another transport path that has been switched to the transport path, the load for pulling out the transferred material during jam processing is automatically reduced, so that another transport path The to-be-transferred material is improved in durability, such as a transport roller and a driven roller of a pair of transport rollers without breaking the inner surface, and high-quality image formation and post-processing are performed, and the configuration is simple and jam processing is performed. A transport device can be provided.
[0021]
ContractClaim8According to the invention, it is possible to prevent malfunction of staying of the transfer object regardless of the processing mode and the number of processes, and the transfer path for transferring the transfer object is changed to a transfer path different from the transfer path by the switching unit. If a jam occurs while the transferred object that has flowed back in another switched transport path stays, the load to pull out the transferred object during jam processing is reduced, and the transferred object in another transport path is reduced. Provided a transfer medium transport device that has improved durability, such as a transport roller and a driven roller of a pair of transport rollers without tearing, has high-quality image formation and post-processing, has a simple configuration, and safely performs jam processing I can do it now.
  Claim9According to the invention, it is possible to prevent malfunction of staying of the transfer object regardless of the processing mode and the number of processes, and the transfer path for transferring the transfer object is changed to a transfer path different from the transfer path by the switching unit. If a jam occurs while the transferred object that has flowed back in another switched transport path stays, the load to pull out the transferred object during jam processing is reduced, and the transferred object in another transport path is reduced. The durability of the transport roller and the driven roller of the transport roller pair is increased without tearing, high-quality image formation and post-processing are performed, simple configuration, low power consumption, resource saving, and easy jam processing It became possible to provide a transfer medium transport device.
[0022]
  Claim10According to the invention, it is possible to prevent a malfunction of staying of the transferred object in advance regardless of the processing mode and the number of processed sheets, and the transfer path for transferring the transferred object is switched to the transfer path different from the transfer path by the switching unit. If a jam occurs while the transferred object that has flowed back in the different transport path stays, the load to pull out the transferred object during jam processing is reduced, and the transferred object in the separate transport path is broken. Without increasing the durability of the transport roller, high-quality image formation and post-processing are performed, the structure is simple and compact, the transport load is reduced, power consumption is low, and resource-saving jam processing is performed safely and easily. It has become possible to provide a transferred object transport apparatus and an image forming apparatus including the transferred object transport apparatus.
  Claim11According to the invention, it is possible to prevent a malfunction of staying of the transferred object in advance regardless of the processing mode and the number of processed sheets, and the transfer path for transferring the transferred object is switched to the transfer path different from the transfer path by the switching unit. If a jam occurs while the transferred object that has flowed back in the different transport path stays, the load to pull out the transferred object during jam processing is reduced, and the transferred object in the separate transport path is broken. In addition, the durability of the transport roller is increased, high-quality image formation and post-processing are performed, and the configuration is simple and compact, reducing the load on the transport, reducing power consumption, saving resources, and making jam processing safe and easy. It is now possible to provide an object-to-be-transferred sheet conveying apparatus and an image forming apparatus including the object-to-be-transferred sheet conveying apparatus.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining a transfer medium conveying apparatus showing an embodiment of the present invention.
FIG. 2 is an explanatory diagram for explaining a state of a main part of a transferred object conveying apparatus showing an embodiment of the present invention.
FIG. 3 is an explanatory view for explaining another state of the main part of the transferred object conveying apparatus showing an embodiment of the present invention.
FIG. 4 is an explanatory diagram for explaining another state of the main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 5 is an explanatory diagram for explaining another state of the main part of the transferred object transport apparatus according to the embodiment of the present invention.
FIG. 6 is an enlarged view for explaining a state of another main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 7 is an enlarged view for explaining another state of the other main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 8 is a plan view of FIG. 6;
9 is a plan view of FIG. 7. FIG.
FIG. 10 is an enlarged view for explaining a state of another main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 11 is an enlarged view for explaining another state of the other main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 12 is an enlarged view for explaining another state of the other main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 13 is an enlarged view for explaining another state of the other main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 14 is an enlarged view for explaining a state of another main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 15 is an enlarged view for explaining another state of the other main part of the transferred object conveying apparatus showing the embodiment of the present invention.
FIG. 16 is a flowchart for explaining the operation of another main part of the transferred object conveying apparatus according to the embodiment of the present invention.
FIG. 17 is a flowchart for explaining another operation of another main part of the transferred object transport apparatus according to the embodiment of the present invention.
FIG. 18 is an explanatory diagram illustrating an image forming apparatus including a transfer medium conveying apparatus according to an exemplary embodiment of the present invention.
[Explanation of symbols]
0 Transfer object transport device,
0a Body frame
1 means of carrying in,
1a loading port,
1b Carry-in roller pair,
1c sensor
2 processing section,
2a rear end fuence,
2b matching fluence,
2c Stapler,
2d processing tray,
2e discharge belt,
2f Release claw
3 Transport path,
3a Pair of transport rollers,
3b A pair of transport rollers,
3c pair of transport rollers,
3d sensor
4 Another transport path,
4a curved portion,
4b sensor
5 switching means
6 Conveying roller pair,
6a Conveying roller,
6b Follower roller
7 Pressurizing means,
7a spring,
7b holding member,
7c Movable member
8 Pressure release means,
8a solenoid,
8b arm
9 Release state maintenance means,
9a locking member,
9a₁  Locking part,
9a₂  Cam surface,
9b Extruding member,
9b₁  Cam surface,
9c holding member,
9c₁  Holding part
10 Cover
11 Discharge roller
12 Followed roller
13 trays
14 Transport guide plate
15 fulcrum
16 Control unit
100 Image forming apparatus
101 image forming means,
101a image carrier,
101b charger,
101c image writing means,
101d Developer,
101e transfer device,
101f fixing device,
101g paper discharge roller,
101h Cleaning member
102 Document image reading apparatus
103 Transfer object supply device

Claims (11)

In a transfer target transport apparatus that forms a bundle of a plurality of sheets by allowing the transfer target to stay in the transport path and transports it to a processing unit, a transport unit that transports the transfer target, and a transport target that is transported from the transport unit. A transfer path for transferring the transfer body to the processing unit, a switching means for guiding the transfer target that flows backward in the transfer path to another transfer path, and a transfer target that is guided to the other transfer path by the switching means and stays there. A transport roller pair for transporting the body so as to overlap the next transfer target transported to the transport path, a pressurizing means for pressurizing the transport roller pair, and a pressure release for releasing the pressurizing force of the pressurizing means and means, the,
The release state maintaining means, which is provided in the pressure release means and maintains the release state of the pressurization when the drive power supply is turned on (ON), is a locking member that is rotatable and has a convex locking portion on the outer periphery, and A pushing member that has a cam surface that fits with a cam surface formed on one end face of the locking member and pushes out the locking member, and the locking of the locking member rotated while being pushed out by the pushing member And a holding member having a holding part for holding the part . 2. The transferred object transport apparatus according to claim 1, wherein the another transport path includes a curved portion. In the transferred body conveying apparatus according to claim 2, wherein another of the said curved portion of the transport path, the transfer member conveying apparatus characterized by disposing the pair of conveying rollers. 4. The transferred object conveying apparatus according to claim 1 , wherein the pressurizing unit includes a spring that pressurizes a driven roller. 5. In the transferred body conveying apparatus according to any one of claims 1 to 4, wherein the pressurizing means includes a movable member for generating a pressure by a spring, wherein the pressure releasing means, said pressing means the transferred body conveying apparatus characterized by comprising a solenoid for releasing the pressure of the movable member of the pressing means with greater force than the pressure of the movable member by the spring. In the transferred body conveying apparatus according to claim 5, the solenoid, the transferred object conveying device, characterized in that said movable member is disposed at a position parallel movement. 7. The transferred object conveying apparatus according to claim 1 , wherein the pressure release unit turns on a driving power source by stopping the transferred object due to occurrence of a jam. Transfer object transport device. 8. The transferred object transport apparatus according to claim 1 , wherein the pressure release unit turns off a driving power source by opening a cover. . 9. The transferred object conveyance apparatus according to claim 1 , wherein the release state maintaining unit releases the maintenance of the released state of the applied pressure by closing the cover. apparatus. In an image forming apparatus that performs post-processing of a transfer target after forming an image, an image forming unit that forms an image on the transfer target, and post-processing of the transfer target on which an image has been formed by the image forming unit wherein a processing unit, and the transferred object conveying device according to any one of the claims 1 to 9 for conveying a transfer medium on which an image has been formed by the image forming means on the processing unit, in that it consists of An image forming apparatus. 11. The image forming apparatus according to claim 10 , wherein the image forming unit forms a toner image by an electrophotographic method.

Images