JP2879969B2 - Image formation post-processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is used in combination with an image forming apparatus such as an image forming post-processing apparatus or a copying machine to stap recording paper discharged from the image forming apparatus. It relates to a post-processing device.

[Prior art] As a conventional image forming post-processing apparatus, for example,
There is an image forming post-processing apparatus as described in JP-A-63-185774. This image forming post-processing apparatus is used in combination with a copying machine which is an image forming apparatus, and has an intermediate tray for holding recording paper discharged from the copying machine in a discharging order, and a set of recording paper held on the intermediate tray. And a processing unit for spell-stopping the paper. The processing unit has two staplers, and when binding a set of recording paper at two locations, 2
Two staplers are activated at the same time.

Since two staplers are simultaneously operated to simultaneously stap a set of recording paper at two locations, the stapling productivity is good.

[Problems to be solved by the invention]

However, there is a problem that two staplers must be provided in the processing unit, and the price increases.

[Object of the invention]

The present invention has been made in view of such a problem of the related art, and an arbitrary portion of a recording sheet can be bound by one stapler, and a plurality of portions of a plurality of sets of recording paper can be bound. In such a case, the stapling position when a plurality of locations of one set of recording paper are bound is the first binding position of the next set of recording paper, thereby eliminating the stapler movement time and eliminating the binding waiting time. It is another object of the present invention to provide an image forming post-processing apparatus capable of reducing costs without reducing productivity of a spell-stop operation.

[Configuration of the invention]

In order to achieve the above object, the present invention provides an image forming post-processing apparatus capable of binding a plurality of positions of a recording sheet discharged from an image forming apparatus, wherein the binding section binds a binding position of the recording sheet; Moving means capable of moving along the plurality of binding positions of the recording paper, and controlling the moving means such that the final binding position where the plurality of binding positions of the recording paper are bound is the start binding position of the next recording paper. And a binding position control unit.

 Hereinafter, a specific description will be given based on examples of the present invention.

1 to 4 are views showing an embodiment of an image forming post-processing apparatus according to the present invention.

First, the configuration will be described. In FIG. 1, reference numeral 11 denotes an image forming post-processing apparatus. The image forming post-processing apparatus 11 is combined with a side portion of a copying machine main body 12 which is an image forming apparatus. On the contact glass 12A on the top of the copying machine body 12,
Recirculating document automatic circulating device ｛Below, RDH (Recycle Docum
ent Handler) and the abbreviation # 13 are placed.

The copier body 12 has an optical scanning unit 1 around a photosensitive drum 15 around a cylindrical photosensitive drum 15 rotating clockwise.
6, charging charger 17, developing unit 18, transfer unit 1
9, units necessary for normal image formation, such as a cleaning unit 20, a static elimination unit 21, and the like are arranged. The recording paper 23 is fed one by one from one of the paper feed cassettes 24A to 24D, and the toner formed on the outer circumferential surface of the photoconductive drum 15 is synchronized with the rotation of the photoconductive drum 15. The image is conveyed to the transfer unit 19 in synchronization with the image. The recording paper 23 after the transfer is fixed to the fixing unit 26 via the transport belt 25.
Is fixed to the copying machine by the discharge roller 27.
It is discharged into the entrance 11a of the image forming post-processing apparatus 11 outside the apparatus. The transfer to the recording paper 23 by the copying machine body 12 is performed by a copy start button on an operation unit (not shown).

RDH13 is a document loading tray 31, paper feeder 32, transport belt 3
3, a reversing unit 34 and a discharging unit 35
The upper original paper 36 is fed one by one from the bottom through the paper feed section 32 to a predetermined position between the transport belt 33 and the contact glass 12A and exposed. The exposed manuscript paper 36 is exposed on the back surface if necessary, passes through the reversing unit 34, is discharged from the discharge unit 35 above the manuscript paper 36 on the manuscript loading tray 31, and is placed on the manuscript paper 36 in an overlapping manner. Is done. After all of the manuscript paper 36 is exposed, the manuscript paper 36 is placed on the manuscript loading tray 31 in the same manner as at the beginning, and the necessary number of copies are repeated according to an instruction from a control unit (not shown) which will be described later. You can copy as many copies as you need.

The image forming post-processing apparatus 11 includes a shift sorting section 40 on the upper side.
And a staple section 41 on the lower side.

The shift sorter 40 includes a transport roller 42a that transports the recording paper 23 discharged from the discharge roller 27 of the copying machine body 12 through the entrance 11a into the image forming post-processing apparatus 11, and a recording paper 23 transmitted from the transport roller 42. And a transport section 45 having an upper transport path 44 directed upward so as to transport the sheet to the upper discharge tray 43. An entrance sensor SN1 is provided on the upstream side of the transport roller 42 on which the recording paper 23 is transported by the transport roller 42, so that the leading end and the rear end of the transported recording paper 23 are detected. On the downstream side of the transport roller 42, a switching claw 46 is provided.
The switching claw 46 is switchable by a solenoid and a spring (not shown) so that the recording paper 23 can be conveyed in either direction of the shift sorting section 40 side and the staple section 41 side described later. .

As shown in FIG.
And a lower transport path 51 that is switched by the switching claw 46 to transport the recording paper 23 transported into the staple unit 41 downward for binding processing, and a recording paper 23 transported through the lower transport path 51. And a staple tray 53 from which a bundle of recording papers 23 subjected to the stapling process is discharged.

 Hereinafter, the binding processing unit 52 will be described.

As shown in FIGS. 2 and 3, the binding processing unit 52 includes a pair of left and right jogger fences 56A and 56B provided between both side plates 55 of the binding processing unit 52 so as to be inclined in the vertical direction. )have. The left and right jogger fences 56A and 56B are respectively fixed to different sides of a belt 57 provided annularly between the side plates 55 so as to be orthogonal to the longitudinal direction of the left and right jogger fences 56, and are driven by a jogger fence motor M1 to be symmetrical in the left and right direction. It is made reciprocable. By this reciprocating movement, the left jogger fence 56A and the right jogger fence 56B have a function of performing the left and right alignment operation of the sheet bundle in the stapling operation, and the staple tray 53 from the vicinity of the discharge roller 59 of the terminal of the lower transport path 51. And has a function as a guide member when discharging the bundle of recording sheets 23 after the binding process.

A detection plate 56a is provided on the lower back surface of the jogger fence 56A, and a home position sensor provided on the main body side
The home positions (HP) of the jogger fences 56A and 56B are detected by shielding the 61 detection units.
The jogger fence 56 is located at the home position (HP) for the operation of aligning the paper bundle.

In the center between both side plates 55 shown in FIG.
65 is inclined in the vertical direction in the same plane as the jogger fence 56, the drive pulley 64 at the upper end, the idle pulley 65 in the middle,
It is extended between the driven pulleys 66 at the lower end and driven by a motor M2 shown in FIG.

A projection-like claw 68 is provided on the surface of the discharge belt 63 so as to be gripped from below the sheet bundle of the recording paper 23. nail
Reference numeral 68 designates the home position by the home position sensor SN2. 69 is a guide plate for the discharge belt 63.

The stapler S, which is a binding means, is fixed on a stapler base 71 provided below the jogger fence 56, although not shown. The stapler S is, for example, a so-called stapler, not shown, but transmits the rotation of the motor to an eccentric crank through a gear, and further changes the linear movement with a lever to push the binding metal to the binding position on the paper surface, thereby setting the binding position. Can be bound.

The stapler base 71 is movably engaged with the guide pin 72a of the stapler slider 72 below the stapler base 71 via the guide hole 71a in one direction, that is, in a direction approaching the jogger fence 56.

 Next, the moving means of the stapler S will be described.

The stapler slider 72 is mounted so as to be slidable in the direction perpendicular to the plane of FIG. 2 using the guide rod 73 whose upper part extends between the side plates 55 as a guide, and is mounted below the stapler slider 72. The guide roller 74 is configured to roll on the surface of the stay 75 on the main body side. A guide cam 76 is fixed to the stay 75, and the guide cam 76
A guide roller 77 pivotally supported by a stapler slider 72 is in contact with a cam surface formed on the upper end side of the stapler slider 72 so that the stapler slider 72 moves together with the stapler base 71 in FIG. Reciprocate in the k direction shown in FIG. The central portion of the guide cam 76 is formed so as to be depressed downward, along which the stapler slider 72 moves so as to be positioned at the upper side on both sides and positioned at the lower side at the center.

At the upper end of the stapler slider 72, a detection plate
A home position (HP) of the stapler S is detected by shielding the detection unit of the home position sensor 78 provided on the main body side with the detection plate 72b. Stapler S on side plate 55
The stepping motor M3 for moving the stapler slider in the left and right direction is attached.
The stapler slider 72 is reciprocated in the left-right direction in FIG. The stapler slider 72, the guide roller 74, the stay 75, the guide cam 76, the motor M3, and the belt 80 constitute a moving unit 81.

Between the stapler S and the jogger fence 56, there are provided a pair of left and right reference fences 83A and 83B (referred to as 83) which can be moved in the left and right direction independently of the jogger fence 56. At the lower end of the fence 83, there is provided a pair of terminal holding portions 83a which are formed in a hook shape and hold and align terminals in the conveying direction of the bundle of recording paper 23. A concave engaging portion 83b that engages the stapler S is provided between the pair of terminal holding portions 83a of the reference fence 83. The reference fence 83 is configured to be movable left and right by a guide member (not shown). With the left and right movement possible, the left and right reference fences 83 are spring 84,
Due to 85, the urging force always acts in the direction of returning to the transport center.

In FIG. 3, the stapler S and the left reference fence 83 are shown.
Since A is engaged at the engagement portion 83b, the left reference fence 83
A moves to the home position (HP) against the urging force of the spring 84, but since the right reference fence 83B is not engaged with the star plastic S having the moving force,
It is in a state of being returned toward the transport center by the urging force of the spring 85.

In this manner, the reference fence 83 for executing the terminal alignment of the recording paper in the transport direction is separated from the jogger fence 56, and the two reference fences 83 are urged by the springs 84 and 85 in the direction to return to the transport central portion. In addition, since the two reference fences 83 are configured to move in accordance with the movement of the stapler S, the stapler S can be bound at any position on the recording paper. Further, for example, even if the reference fence 83 is shifted during the jam processing, it always returns to the vicinity of the transport center, so that the state in which the stapler S and the reference fence 83 cannot be engaged is eliminated.

When the stapler S is moving at the upper position, which is the region on both ends of the apparatus, the engaging portion 83b of the reference fence 83 is in a fitted state with the stapler S, and the stapler S is at the lower position, which is the central region of the device. When the position is being moved, the stapler S is configured to be in a detached state. Further, when the stapler S and the reference fence 83 are connected via the respective engaging portions 83b, the moving force of the stapler S is transmitted to the reference fence 83. At this time, the reference fence 83 is moved with the movement of the stapler S. Will move.

Next, a control unit, which is a binding position control unit,
I will explain about 91. The control unit 91 is, for example,
It is provided near the operation unit of the copying machine main body 12 shown in FIG. The control unit 91 includes a CPU that outputs various operation signals according to a predetermined program, and the sensors SN described above.
1, an input circuit for converting input signals from the home sensor and the operation unit of the copier body 12 into a form that can be processed by the CPU, a RAM that stores signals processed by the CPU, motors M, And a drive circuit for driving a solenoid or the like. The CPU can drive the solenoids and the motors M _{1 to} M ₃ through the drive circuit while transmitting and receiving signals to and from the RAM and the operation unit according to a predetermined program.

 Next, the operation will be described.

The operation of the RDH, the copying operation in the copying machine main unit 12, and the operation of the shift sorting unit 40 in the image forming post-processing apparatus 11 are the same as those in the normal operation, and will not be described.

The binding operation of the recording paper 23 in the stapling section 41 of the post-image forming apparatus 11 will be described with reference to the flowchart of FIG. The operation other than the binding process is the same as the normal operation, and the description is omitted.

Copying only K copies of M originals, each copied recording paper 23
The case where the binding is performed at two binding positions A and B of the paper bundle will be described.

First, M originals are set on an RDH original feed table. In Step P _1, the stable key on the operation unit of the copying machine main body 12, stable mode selection is made, in step P _2, select Forward 2-position stapling mode as binding mode of the recording paper 23 which has been copied to this document was determined to be (omitted for other modes), the number of copies K unit required is selected by the operation of the ten keys at step P _3, step
Copies N of the recording paper 23 which has been copied by P ₄ is zero, then the copy start button is pressed by the operating portion of the copying machine main body 12 at step P ₅ (omitted when no start), in step P _6, The motor M3 is driven by a signal from the control unit 91, the belt 80 moves, and the stapler S moves from the home position (HP) to the position A corresponding to the binding position A of the recording paper 23 shown in FIG. and, it is determined whether a copy of a portion of the document is finished in step P _7, if the copying is not completed, repeats the determination until the copy is complete. When the first copy copy of the recording paper 23 is completed, at step P _8, binding signal is transmitted from the control unit 91 to the motor of the stapler S, the motor is activated, the stapler S is actuated, a predetermined recording paper 23 position a is stapling, in step P _9, the number of copies N becomes 1, N is determined whether odd in step P _10, since N is an odd number 1,
In step P _11, the control unit 91 transmits a movement signal of the stapler S (A → B) to the motor M3, the motor M3
There is driven stapler S is moved to a position B corresponding to the stapling position B from the binding position A by the belt 80 moves, in step P _13, binding signal is transmitted from the control unit 91 to the motor of the stapler S, stapler The motor of S is operated to stop the binding position B of the recording paper 23, and the first set of recording paper 23 paper bundle is formed. Released in step P ₁₄ the belt 63
Is driven by the motor M2, and a bundle of 23 recording paper
Engages the pawl 68 of 63, is pushed upward along the jogger fences 56, is discharged from the discharge opening into the staple tray 53, N is determined whether K in step P _15, N is K
Not equal, ie, N is going to sign when the 1 (N-1), and repeats from step P ₇ again.

In step P _7, when the second copy copy of the recording paper 23 is completed, in the same manner as described above the control unit in Step P ₈
91 signal to the motor of the stapler S in the stapling position B is transmitted from, binding position B of the second part of the recording paper 23 is stapling, in step P _9, N is 2 (N = 2), and the step N determines whether odd number P _10, since N is an even number (N = 2), in step P _12, the control unit 91 transmits a movement signal of the stapler S (B → a) to the motor M3,
As described above, the stapler S moves from the binding position B to the binding position A.
Go to, binding position A of the second part of the recording paper 23 in the same manner as described above is stopped binding in step P _13, a second copy of the recording sheet 23 can paper bundle, in the same manner as described above in step P ₁₄ The sheet bundle of recording paper 23 of the second copy is discharged into the staple tray 53, and the
N is determined whether K at P _15, and the same as N is K
Repeating steps P ₇ to P ₁₄ until (N = K). If N is determined to be K (N = K) in step P _15, Step P
_{At 16} , the stapler S returns to the home position (HP),
The copying ends.

As described above, the image forming post-processing device 11 is a control unit that arbitrarily controls the binding position of one stapler S.
In the case where two binding positions A and B of the recording paper 23 in the K section can be bound at any position on the recording paper 23 by the 91, the final binding position of one binding position of the recording paper 23 is Is controlled to be the first binding position of the sheet bundle of the next set of recording papers 23, so that there is no waiting time for the movement of the stapler S after the final binding of one set of binding positions, and Recording paper
23, the stapling operation can be started quickly, the efficiency of the stapling operation can be improved even when the stapling operation is performed by one stapler S, the productivity of the stapling operation can be prevented, and two staplers S can be used. Since the same binding efficiency can be achieved as in the case of the stapler S, the cost can be reduced.

〔effect〕

As described above, according to the present invention, an arbitrary portion of a recording sheet can be bound by one stapler, and a plurality of portions of the recording sheet can be bound at a plurality of locations.
By making the final binding position where a plurality of locations of one set of recording paper is bound to the first binding position of the next set of recording paper, the stapler movement time is eliminated, the binding waiting time is eliminated, and the binding operation is performed. Cost can be reduced without lowering the productivity.

[Brief description of the drawings]

1 to 4 are views showing an embodiment of an image forming post-processing apparatus according to the present invention. FIG. 1 is an overall explanatory diagram of a copier, FIG. FIG. 3 is a diagram of FIG.
FIG. 4 is a flow chart showing the operation of the main part, as viewed from the direction of arrows III-III. 11 ... image forming post-processing device, 12 ... copier body, 23 ... recording paper, 81 ... moving means, 91 ... control unit (binding position control means), S ... stapler (binding means), A , B ... Binding position.

Continued on the front page (72) Inventor Kenji Yamada 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Inventor Yasuo Osuga 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Inside Ricoh Company (72) Inventor Yuichi Fujii 2-28-24 Izumi, Higashi-ku, Nagoya-shi, Aichi Yokotabil Inside Ricoh Elemex Co., Ltd. (56) References JP-A-2-276691 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) B65H 37/04 G03G 15/00

Claims (1)

(57) [Claims] An image forming post-processing apparatus capable of binding a plurality of positions of recording paper discharged from an image forming apparatus, a binding means for binding a binding position of the recording paper, and the binding means comprising a plurality of binding sheets for the recording paper. Moving means capable of moving along the binding position, and a binding position control means for controlling the moving means so that the final binding position where a plurality of binding positions of the recording paper are bound is the start binding position of the next recording paper; An image forming post-processing apparatus comprising: