CN101314446B - Post-treatment apparatus for paper, image forming apparatus and post-treatment method for paper - Google Patents

Abstract

The invention provides a paper post-treatment device, comprising a binding unit, a folding unit and a fold reinforcing unit, wherein, the folding unit is provided with a pair of fold rollers, and inserts a central part bound in the binding unit into a nip part of the fold rollers to form a crease; the fold reinforcing unit reinforces the crease formed in the folding unit, and comprises a roller unit, a drive part and a clamping part, wherein, the roller unit is provided with a first roller and a second roller, clamps and presses the crease of a paper stack sent from the folding unit by the first roller and the second roller while moving along the direction of the crease; the drive part allows the roller unit to move along the direction of the crease from a standby position which is positioned on the position out of the end part of the paper stack; the clamping part is provided with a first clamping pallet and a second clamping pallet, places the paper stack sent by the folding unit on the first clamping pallet, and clamps the paper stack in a position between the crease and the folding unit through the first clamping pallet and the second clamping pallet; and the position of the nip part of the fold rollers and the position of a nip part generated by the first roller and the second roller are assembled to be approximately in accordance with an imaginary plane expanded by a paper stack placed plane of the first clamping pallet.

Description

Sheet post-process apparatus, image processing system and sheet finishing method

Technical field

The present invention relates to a kind of sheet post-process apparatus, use the image processing system and the sheet finishing method of this sheet post-process apparatus, particularly the paper after printing fold sheet post-process apparatus, the image processing system that uses this sheet post-process apparatus and the sheet finishing method of processing.

Background technology

All the time, known have a kind of sheet post-process apparatus, be arranged on the downstream of duplicator, chopping machine and compounding machine image processing systems such as (MFP (Multi-Functional Peripheral) multifunction peripherals), post-processings such as processing or bookbinding processing that the paper after printing is punched.

Recently, the functional diversities of this sheet post-process apparatus gets up, and a kind of sheet post-process apparatus has been proposed, except having the function that punching is handled or bookbinding is handled, also have folding processing capacity that the part to paper folds or the central portion of paper is bound the back in the folding processing capacity of the bookbinding of central portion folded sheet with attachment means.(with reference to JP-A2004-59304, JP-A2003-182928 etc.)

In sheet post-process apparatus, the plurality of sheets of paper of printing opened make bind into book form (bookbinding) and also become possibility with the folding processing capacity of bookbinding.

Carry out following processing in handling in that the bookbinding that is proposed before is folding: with attachment means etc. with the central portion of paper stapled after, it is folded after bookbinding portion extrudes folding line with the pair of rolls that is called as folding roller (fold roller).At this moment, the plate shape parts that will be called as folding blade are attached in the bookbinding portion of quires (paper is piled up), and with its portion of nipping that fills in described a pair of folding roller, extrude folding line on quires.

Yet it is very short that the folding part of quires is folded the time that the portion of nipping of roller exerts pressure, and because whole folding part is folded the portion of nipping of roller simultaneously exerts pressure, so pressure is distributed to whole folding line.Therefore, the folding line that is formed by folding roller becomes the folding line of fully not exerted pressure.Particularly at the number of paper more for a long time, when perhaps including thicker paper in the quires, usually incomplete folding line can appear.

In order to tackle this problem, disclose among JP-A2004-59304 and the JP-A2003-182928 roller that is called as reinforcement roller (reinforce roller) has been set in addition, and strengthened the technology that roller is strengthened the folding line that is formed by folding roller with this.

In the disclosed technology of JP-A2004-59304, will temporarily stop on the guide plate from the quires that folding roller is released, Yi Bian the reinforcement roller is exerted pressure from the top of quires folding line, Yi Bian it is moved along folding line.By the pressure that produces between guide plate and the reinforcement roller, strengthened by the folding line of guide plate and reinforcement roller clamping.

In addition, following technology being disclosed also in JP-A2003-182928: will be clipped in from the folding line that folding roller is released in the portion of nipping of a pair of reinforcement roller, and strengthen folding line by a pair of reinforcement roller is moved along folding line.

As mentioned above, strengthen roller on one side along folding line online direction (i.e. the direction that intersects vertically with the throughput direction of quires) folding line is exerted pressure, on one side along folding line online direction move.This pressure is big more, and the effect of strengthening folding line is high more.

Yet the pressure of strengthening roller is big more, when the reinforcement roller touches the end of quires, coil paper takes place or make the possibility of quires lateral excursion high more.And, in move the reinforcement roller along folding line, make the possibility of quires generation lateral excursion also high more.

And, quires when folding roller is delivered to the position of strengthening roller, is needed that also quires is not bent, do not take place lateral excursion ground and is not delivered to folding intensive treatment position swimmingly.

Summary of the invention

In view of the above problems, the object of the present invention is to provide a kind of sheet post-process apparatus, use the image processing system and the sheet finishing method of this sheet post-process apparatus, in binding the folding sheet post-process apparatus of handling, can in the end of quires the coil paper phenomenon take place, and the lateral excursion of quires does not take place, and can strengthen folding line in position.

In order to reach above-mentioned purpose, the sheet post-process apparatus of a first aspect of the present invention comprises: stapling unit is used for the central portion of the quires that built up by the paper after printing is bound; Folding unit has a pair of folding roller, is used for filled in the portion of nipping of described folding roller by the described central portion of described stapling unit bookbinding, to form folding line; And fold-enhancing unit, be used to strengthen the described folding line that forms at described folding unit.Wherein, described fold-enhancing unit comprises: roller unit, have first roller and second roller, and on one side with described first roller and the described second roller clamping and push the folding line of the described quires that transports from described folding unit, move along the direction of described folding line on one side; Drive division is used for from position of readiness described roller unit being moved along the direction of described folding line, and described position of readiness is positioned at the position of leaving described quires end; And holding part, have first grip block and second grip block, the described quires mounting that is used for transporting from described folding unit is on described first grip block, and by described first grip block and described second grip block, the described quires of position clamping between described folding line and described folding unit; Wherein, the position that is adapted on the imaginary plane that the quires mounting surface with described first grip block extends of the portion of the nipping position of described folding roller and the portion of the nipping position that is generated by first roller and second roller is approximately consistent.

In addition, the image processing system of a second aspect of the present invention comprises: reading part is used to read original copy and generates view data; Image forming part is used for printing described view data on paper; And sheet post-process apparatus, for the paper of printing at described image forming part, bind at least and handle and folding the processing.Wherein, described sheet post-process apparatus comprises: stapling unit is used for the central portion of the quires that built up by the paper after printing is bound; Folding unit has a pair of folding roller, is used for filled in the portion of nipping of described folding roller by the described central portion of described stapling unit bookbinding, to form folding line; And fold-enhancing unit, be used to strengthen the described folding line that forms at described folding unit.Wherein, described fold-enhancing unit comprises: roller unit, have first roller and second roller, and on one side with described first roller and the described second roller clamping and push the folding line of the described quires that transports from described folding unit, move along the direction of described folding line on one side; Drive division is used for from position of readiness described roller unit being moved along the direction of described folding line, and described holding fix is positioned at the position of leaving described quires end; And holding part, have first grip block and second grip block, the described quires mounting that is used for transporting from described folding unit is on described first grip block, pass through described first grip block and described second grip block, the described quires of position clamping between described folding line and described folding unit simultaneously; Wherein, the position that is adapted on the imaginary plane that the quires mounting surface with described first grip block extends of the portion of the nipping position of described folding roller and the portion of the nipping position that is generated by first roller and second roller is approximately consistent.

In addition, the sheet finishing method of third aspect present invention comprises: the central portion to the quires that built up by the paper after printing is bound; Described central portion after the bookbinding is filled in the portion of nipping of a pair of folding roller in the folding unit, to form folding line; The described quires mounting that will transport from described folding unit on described first grip block, and by described first grip block and described second grip block described quires of position clamping between described folding line and described folding unit; Roller unit with first roller and second roller is moved from position of readiness, described position of readiness is positioned at the position of leaving described quires end, and with described first roller and the described second roller clamping and push the folding line of described quires, described first roller and described second roller are moved along the direction of described folding line, thereby strengthen described folding line; The position that the portion of the nipping position of described folding roller and the portion of the nipping position that is generated by described first roller and described second roller are adapted on the imaginary plane that the quires mounting surface with described first grip block extends is approximately consistent.

Description of drawings

Fig. 1 is the block diagram of the outward appearance example of the expression image processing system relevant with one embodiment of the invention;

Fig. 2 is the section-drawing of the configuration example of the expression image processing system relevant with one embodiment of the invention;

Fig. 3 is the section-drawing of the configuration example of expression bookbinding handling part;

Fig. 4 is the integrally-built stereoscopic figure of expression fold-enhancing unit;

Fig. 5 A, Fig. 5 B are the mode sectional drawings that the support structure mainly is described;

Fig. 6 is the stereoscopic figure of the structure example of expression roller unit;

Fig. 7 be from the conveying of quires see the figure of fold-enhancing unit;

Fig. 8 is the instruction diagram of effective drive range of roller unit;

Fig. 9 is first instruction diagram of the physical construction that drives up and down of top roll;

Figure 10 is second instruction diagram of the physical construction that drives up and down of top roll;

Figure 11 is first scheme drawing of the drive configuration of driving up and down that is used to carry guide;

Figure 12 is second scheme drawing of the drive configuration of driving up and down that is used to carry guide;

Figure 13 A～13D is the mode declaration pattern specification figure of action that carries the drive configuration up and down of guide;

Figure 14 A～14G is an exemplary plot of strengthening the shape of roller;

Figure 15 is the scheme drawing of each position relation of the upper end of the portion of nipping (folder portion) of conveying reference plane, a pair of folding roller of expression quires and lower roll;

Figure 16 is the diagram of circuit of the example handled of the drive controlling on the doubling direction of drive controlling on the expression quires throughput direction and roller unit;

Figure 17 is the expression quires at the mobile halted state on the throughput direction, the on off state of discharging feeding sensor, the roller unit mobile halted state on doubling direction and the chronogram of the time relationship of the on off state of dead position sensor;

Figure 18 A, 18B are the movement concept scheme drawings of first variation of throughput direction drive controlling;

Figure 19 A～19D is the movement concept scheme drawing of second variation of throughput direction drive controlling;

Figure 20 is the movement concept scheme drawing of variation of the doubling direction drive controlling of roller unit;

Figure 21 A～21C is the structure of the expression fold-enhancing unit relevant with second embodiment and the mode chart of movement concept;

Figure 22 A～22F is the structure of the expression fold-enhancing unit 50 relevant with the 3rd embodiment and the mode chart of movement concept.

The specific embodiment

With reference to accompanying drawing, to sheet post-process apparatus related to the present invention and use the embodiment of the image processing system of this sheet post-process apparatus to describe.

(1) formation of image processing system

Fig. 1 is the stereoscopic figure of the basic comprising example of the expression image processing system 10 relevant with present embodiment.Image processing system 10 by the reading part 11 that reads original copy, with the electronic photo form with the original image data print-out that reads in the image forming part on the paper 12 and to the paper after printing put that processings, punching are handled in order, the folding sheet post-process apparatus 20 of handling, bind post-processings such as processing etc. constitutes.And image forming part 12 is provided with and is used to the operating portion 9 that allows the user carry out various operations.

Fig. 2 is the section-drawing that presentation video forms the detail section configuration example of device 10.

Have photosensitive drums 1 near the central portion of the image forming part 12 of image processing system 10, dispose charged elements 2, exposing unit 3, developing cell 4, transfer printing unit 5A around the photosensitive drums 1 respectively, remove electric unit 5B, disengaging pawl 5C and cleaning unit 6.And the downstream of removing electric unit 5B is provided with fixation unit 8.Roughly carry out image in the following order by these each unit and form processing.

At first, the surface that makes photosensitive drums 1 by charged elements 2 is identical with going up.On the other hand, the original copy that is read by reading part 11 is converted into view data, and is imported into exposing unit 3.In exposing unit 3, the laser beam irradiation that will adapt with the level of view data forms electrostatic latent image on photosensitive drums 1 on photosensitive drums 1.This electrostatic latent image develops by the toner that provides from developing cell 4, and forms toner image on photosensitive drums 1.

On the other hand, the paper that is accommodated in the paper incorporating section 7 passes through a plurality of conveying rollers, is transported to transfer position (gap of photosensitive drums 1 and transfer printing unit 5A).In transfer position, toner image is transferred on the paper from photosensitive drums 1 by transfer printing unit 5A.Transfer printing has the paper of toner image to remove its surperficial electric charge by removing electric unit 5B, separates with photosensitive drums 1 by disengaging pawl 5C.Afterwards, paper is carried by middle delivery section 7B, after fixation unit 8 heating, pressurization, toner image by photographic fixing on paper.The paper of finishing the photographic fixing processing is discharged from from discharge portion 7C, and is output to sheet post-process apparatus 20.

On the other hand, photosensitive drums 1 is removed by cleaning unit 6 in the downstream of disengaging pawl 5C and is remained in its lip-deep developer, prepares for next image forms.

In addition, when carrying out duplex printing, surperficial photographic fixing there is the paper of toner image tell, turns round, the pros and cons of paper is taken place oppositely at reverse delivery section 7E from common discharge path by transport path change-over panel 7D.After paper takes place oppositely, its reverse side is carried out printing identical print processing with single face, be output to sheet post-process apparatus 20 from discharge portion 7C then.

Sheet post-process apparatus 20 is used to put in order the arrangement portion (not shown) of paper except having, and also comprises bookbinding handling part 30 and quires mounting portion 40.

Bookbinding handling part 30 carries out following processing: the central portion that the plurality of sheets of paper that the printing of discharging from image forming part 12 is finished with attachment means is opened is bound, and afterwards, fold and binds into book form (bookbinding processing).

Book after 30 bookbindings of bookbinding handling part are handled is output to quires mounting portion 40, and bound book will be by final mounting in this.

Fig. 3 is the section-drawing of the detail section configuration example of expression bookbinding handling part 30.

In bookbinding handling part 30, accept from the paper of the discharge portion 7C discharge of image forming part by a pair of inlet roller 31, and a pair of intermediate calender rolls 32 is given in handing-over.A pair of intermediate calender rolls 32 joins this paper to a pair of outlet roller 33 again.A pair of outlet roller 33 with this paper sheet delivery to upright dish 34 with inclination mounting surface.The front end of paper is towards the inclination top of upright dish 34.

Sheet stacker 35 standby below upright dish 34 is caught from the inclination top of upright dish 34 and is turned round the lower end of the paper that falls.

The centre of upright dish 34 is provided with attachment means 36 (stapling unit).When quires is bound processing (bookbinding), adjust the position of sheet stacker 35, face attachment means 36 with the position (central portion of quires above-below direction) that quires should be bound.

When quires was bound by attachment means 36, sheet stacker 35 descended, and the position (central authorities of quires above-below direction, the position of binding device) that should be forced out folding line up to quires arrives the front that folds blade 37.

When the position that should be forced out folding line arrived the front of folding blade 37, the front end 37a of folding blade 37 pushes should be as a face of the inside after quires is folded.

The front-end configuration of the working direction of folding blade 37 has a pair of folding roller 38.Quires after folding blade 37 is pushed is involved in the portion of nipping of a pair of folding roller 38, at the central portion formation folding line of quires.In addition, folding blade 37 and a pair of folding roller 38 constitute folding unit.

Form the paper of folding line and then be transported to the fold-enhancing unit (fold reinforcing unit etc.) 50 that is arranged on its downstream by a pair of folding roller 38.The quires that is transported to fold-enhancing unit 50 temporarily stops to carry at this.

Fold-enhancing unit 50 is provided with a pair of reinforcement roller 51 (top roll (second roller) 51a and lower roll (first roller) 51b).A pair of reinforcement roller 51 on direction that the throughput direction with quires intersects vertically (along the direction of the line at folding line place), on one side folding line exerted pressure move on one side, strengthen folding line.

The quires of strengthening after folding line is strengthened in unit 50 through folding line begins to carry once more, drawn by a pair of distributing roller 39, and to 40 outputs of quires mounting portion, will be in quires mounting portion 40 through the quires (book) that bookbinding is handled by mounting.

The principal character of embodiment related to the present invention is structure, function and the action etc. of fold-enhancing unit 50, will structure, function and the action etc. of fold-enhancing unit 50 be elaborated below.

(2) structure of fold-enhancing unit, action

Fig. 4 is the integrally-built stereoscopic figure of expression fold-enhancing unit 50.Fold-enhancing unit comprises strengthens roller unit 60 (the following roller unit 60 that only is called), support 70 and drive division 80.

Roller unit 60 has a pair of reinforcement roller 51, and the folding line of the quires of releasing from a pair of folding roller 38 that is positioned at the upstream with these a pair of reinforcement roller 51 clampings is exerted pressure to this folding line, and moved along folding line, thereby strengthens folding line.

Support 70 anvil roll unit 60, so that described roller unit 60 can slide on doubling direction, described support 70 comprises the hold assembly of quires and fold-enhancing unit 50 single-piece structure members etc. simultaneously.

Drive division 80 has driving motor 81, by this driving motor 81 along folding line driven roller unit 60.

In above-mentioned roller unit 60, support 70 and drive division 80, at first utilize Fig. 4 and Fig. 5 A, 5B that the structure of support 70 is described.Fig. 5 A, 5B are the mode sectional drawings that the structure of support 70 mainly is described.Fig. 5 A is that roller unit 60 is arranged in dead position (position of readiness: the section-drawing in the time of the position of Fig. 4 left end), Fig. 5 B are the section-drawing of roller unit 60 when moving (reinforcement folding line).

Support 70 has support 71, and support 71 comprises top board 711, left side plate 712a, 712b, base plate 713, inner panel 714 and quires mounting table (first grip block) 715 (with reference to figure 5A, Fig. 5 B etc.) etc.

Top board 711 is provided with the support holes 711a that extends to its long side direction.

And biside plate 712a is provided with the bolster 75, the section that are used for anvil roll unit 60 and is the conveying guide 72 of L font and is used on above-below direction driving the axle drive shaft (with reference to figure 5A, Fig. 5 B etc.) of carrying guide 72 etc. between the 712b.

Extend the banded pliability parts (the second pliability parts) 73 that the poly terephthalic acid second two fat resin materials such as (PET) by film like forms from base plate (second grip block) 72a that carries guide 72.Also extend same pliability parts (the first pliability parts) 74 from quires mounting table (first grip block) 715.

In addition, constitute holding part by quires mounting table (first grip block) 715, pliability parts (the first pliability parts) 74, base plate (second grip block) 72a that carries guide 72 and pliability parts (the second pliability parts) 73.

Shown in Fig. 5 A, Fig. 5 B, the folding line 100a of quires 100 is clamped between the pliability parts 73,74, exerted pressure by a pair of reinforcement roller 51 (top roll 51a and lower roll 51b) by pliability parts 73,74, thereby folding line is reinforced.By pliability parts 73,74 can prevent folding line and near generation scar or fold.

The leading section of pliability parts 73,74 is provided with notch 73a, 74b.These notchs 73a, 74b is arranged on and corresponding position, the position of the attachment means of folding line, prevents that pliability parts 73,74 from sustaining damage because of attachment means.

As mentioned below, the bottom of roller unit 60 is provided with the through hole 61 that is used to connect bolster 75.And the top of roller unit 60 is provided with the anvil roll 62 that is used to keep posture, and anvil roll 62 moves along the support holes 711a that is arranged on the top board 711.

The position of roller unit 60 (except the change in location on the moving direction) and 3 posture is controlled by described bolster 75 and through hole 61 and support holes 711a and anvil roll 62, and is also kept regularly in the moving of roller unit 60.

Structure to roller unit 60 describes below.Fig. 6 is the stereoscopic figure of the structure example of expression roller unit, is the figure that the conveying source direction (direction opposite with Fig. 4) from quires is seen.

Roller unit 60 is the unit that are built-in with a pair of reinforcement roller 51, comprises the unit bearing portion 63 and the unit rack 67 that is fixed in unit bearing portion 63 tops that are positioned at the bottom and are provided with through hole 61.

Unit rack 67 is formed by supporting plate 67c secure bond by upper bracket 67a with hollow bulb and the lower bracket 67b that has hollow bulb equally.

In addition, roller unit 60 has last link (second link) 65 and following link (first link) 66, and both connect by spring 68 springs.One end of spring 68 is engaged in the dog hole 65b of link 65, and the other end of spring 68 is engaged in down the notch 66b of link 66.Fig. 6 represents the spring 68 of the free state that the other end of spring 68 and notch 66b break away from, but in fact under the other end of spring 68 and state that notch 66b engages, has been applied in the pulling force of spring 68 between last link 65 and the following link 66.

Accommodated the lower roll 51b of one of a pair of reinforcement roller 51 in the hollow bulb of lower bracket 67b.Lower roll 51b is supported by axle, so that described lower roll 51b can rotate freely around the lower roller shaft (not shown) that is fixed on the lower bracket 67b.

Following link 66 rotates the side that is incorporated into lower bracket 67b freely by the following adapter shaft 66a (with reference to figure 4) that is fixed on the lower bracket 67b.

Accommodated the top roll 51a of one of a pair of reinforcement roller 51 in the hollow bulb of upper bracket 67a.Top roll 51a is supported by axle, so that described top roll 51a can rotate freely around the last roll shaft (not shown) that is fixed on the link 65 (not being upper bracket 67a).

The S. A. of lower roll 51b (lower roller shaft) is fixed on lower bracket 67a and goes up (that is, being fixed on the unit rack 67), even roller unit 60 moves, the position of lower roll 51b does not change on above-below direction yet.It is identical with the position of pliability parts 74 that the upper end position of lower roll 51b is adjusted to, and when roller unit 60 moved, lower roll 51b contacted with the lower surface of pliability parts 74 on one side, on one side rotation.

On the other hand, the last roll shaft of top roll 51a is fixed on the link 65.Begin when mobile when roller unit 60 leaves dead position, last link 65 is drawn by spring 68, beginning below center on adapter shaft 65a rotation.By this rotation, the top roll 51a that rotation is installed on the link 65 freely begins to descend, and moves to the position contacting with lower roll 51b.The pressing force mutual action between top roll 51a and lower roll 51b that causes by the pulling force of spring 68.In fact, owing to by 73,74 clampings of pliability parts quires is arranged between top roll 51a and the lower roll 51b, so the folding line of quires is strengthened by the pressing force between top roll 51a and the lower roll 51b.

Structure to drive division 80 describes below.Fig. 7 is the scheme drawing of the formation and the structure example of drive division 80.Fig. 7 be from the conveying of quires see that the figure that carries source direction, Fig. 7 also show the roller unit 60 that is positioned at dead position and the driver train of a pair of folding roller 38 and a pair of folding roller 38 in the lump.And for convenience of explanation, the structure member of support 70 part is omitted in diagram.

Drive division 80 has the unique drive source drives electrical motor 81 as fold-enhancing unit 50.Driving motor 81 is DC motor, can be from external control hand of rotation and rotative speed.

The propulsive effort that driving motor 81 produces is sent to pulley 83 by electrical motor band 82, and the gear 83 from pulley 83 is sent to drive side pulley 86a by gear 84, gear 85 then.On the other hand, unit drives band 87 stretches between drive side pulley 86a and slave end pulley 86b.Unit drives band 87 is because the propulsive effort that driving motor 81 produces is mobile between drive side pulley 86a and slave end pulley 86b.

The surface of unit drives band 87 is formed with tooth bar, by making this tooth bar and the tooth tabling that is arranged at the fitting portion 63a (with reference to figure 6) of roller unit 60 bottoms, roller unit 60 is moved on doubling direction indeed, but not slide.By reversing the hand of rotation of driving motor 81, the moving direction of unit drives band 87 can change, and roller unit is moved back and forth.

By the Spin Control of driving motor 81, amount of movement and moving velocity that can control unit rotating band 87, be the amount of movement and the moving velocity of roller unit 60.The rotation amount of driving motor 81 and rotative speed be according to detecting from the impulse singla string that is provided near encoder detector 88 outputs the driving motor 81, and carry out the Spin Control of driving motor 81 based on detected rotation amount and rotative speed.

Driving motor 81 can be made of pulse motor.In this case, can detect rotative speed by calculating the pulse of directly exporting from driving motor 81.

Fig. 8 is the scheme drawing of the relation between effective drive range of expression roller unit 60 and the width that can handle maximum sheet size (for example A3 size).As shown in Figure 8, the dead position of roller unit 60 is set in handling on the position that maximum sized quires can not interfere.On the other hand, apart from the highest distance position of dead position set positions farthest in this scope of end that can handle maximum sized quires is not crossed by the portion of nipping of a pair of reinforcement roller 51 of roller unit 60.

Roller unit 60 leaves dead position to begin to move, and moves along folding line while strengthen folding line, temporarily stops at the end with the dead position opposition side of quires then.Afterwards, continue to strengthen folding line, and meanwhile on the loop, move, and get back to dead position.

Temporarily stop at end position with the dead position opposition side of quires according to antiquarian and different, the position that temporarily stops to be decided according to the information of antiquarian.

In fold-enhancing unit 50, except roller unit 60 moving on doubling direction, also carry out top roll 51a and drive and carry the driving up and down of guide 72 up and down at roller unit 60 in-to-ins, these drive sources that drive up and down all are driving motors 81.That is to say that the drive actions in the fold-enhancing unit 50 is all undertaken by mono-driving motor 81.Describe successively at the physical construction that drives up and down of top roll 51a and the physical construction that drives up and down of conveying guide 72 below.

Fig. 9 and Figure 10 are the instruction diagrams of the physical construction that drives up and down of top roll 51a.As mentioned before, the last link 65 of roller unit 60 is connected by spring 68 springs in distance S. A. (65a, 66a) position farthest separately with following link 66.And following link 66 is provided with the deflector roll 66c (with reference to figure 4 etc.) that can rotate freely.

On the other hand, as shown in Figure 9, support 70 has the guide rail 77 that section is the L font.Guide rail 77 has near bevelled rake 77a dead position, and the part beyond the rake 77a is parallel with the doubling direction of quires.

As shown in figure 10, be with 87 to drive when leaving dead position when roller unit 60 is driven, deflector roll 66c will contact with the bottom surface of the rake 77a of guide rail 77 in the near future.Then, deflector roll 66c will descend along the bottom surface of rake 77a.Be accompanied by the decline of deflector roll 66c, following link 66 following adapter shaft 66a are the center, rotate along the anticlockwise direction among Figure 10.And last link 65 is also drawn by spring 68, and above adapter shaft 65a is that the center rotates in the counterclockwise direction.Like this, during moving on the rake 77a, the top roll 51a between the dog hole 65b of last adapter shaft 65a and spring 68 descends slowly at roller unit 60, goes near gradually in the interval between top roll 51a and the lower roll 51b.Then, top roll 51a and lower roll 51b contact near the zone of rake 77a termination.At this moment, the pressure of pushing mutually (pushing) acts between top roll 51a and lower roll 51b.This pressing force is caused by the pulling force of spring 68.

On the horizontal zone (being effective drive area) of guide rail 77,,, strengthen folding line Yi Bian the folding line of quires is exerted pressure on one side top roll 51a and lower roll 51b keep above-mentioned pushing.

Below the physical construction that drives up and down of carrying guide 72 is described.Shown in Fig. 5 A, when roller unit 60 is positioned at dead position, carry guide 72 upwards to be lifted, carry quires 100 from base plate 72a and the peristome between the quires mounting table 715 of carrying guide 72.On the other hand, shown in Fig. 5 B,, when strengthening the folding line action, carry guide 72 to descend and the clamping quires when roller unit 60 is effectively moving in the moving range.

Figure 11 and Figure 12 are the scheme drawings of the drive configuration of driving up and down that is used to carry guide 72.

As Figure 11 and shown in Figure 12, carry and be equipped with the axle drive shaft 76 that drives up and down that is used to carry guide 72 between guide 72 and a pair of folding roller 38.Be fixed with cam part 761 on one end of dead position one side of axle drive shaft 76.

As shown in figure 12, cam part 761 comprises twist part 761a, horizontal part 761c that links to each other with twist part 761a that forms the twisted board component shape and the leading section 761b that is positioned at horizontal part 761c opposition side.

And, cam part 761 more near the front end of dead position one side, rod unit 762 is fixed on the axle drive shaft 76.The leading section of rod unit 762 is provided with slotted hole 762b, and the bar roller 762a that is fixed on the end of carrying guide 72 can be inserted in this slotted hole 762b slidably.

In addition, be fixed with bearing sub-assembly 722 in the end of carrying guide 72, this bearing sub-assembly 722 is inserted in the slotted hole 722a on the unit rack 67 that is formed at roller unit 60, and can slide on above-below direction.

On the other hand, carry between the base plate 713 of the end of dead position one side of base plate 72a of guide 72 and support 71 by carrying guide spring 721 springs to connect, by the pulling force of carrying guide spring 721 will carry guide 72 be drawn to below (direction of base plate 713).

Utilize Figure 13 A-Figure 13 D below, the action of these drive configurations is described.

Figure 13 A and Figure 13 B are that roller unit 60 leaves the view that dead position moved, promptly strengthened the folding line action.

Figure 13 A is that expression is fixed on the cam part 761 on the axle drive shaft 76 and carries the figure of the position relation of guide supporting station 67d.Roller unit 60 has the conveying guide supporting station 67d (with reference to Figure 11, Fig. 6) that comes out from unit rack 67 horizontal-extendings, and when roller unit 60 left dead position, cam part 761 and carry guide supporting station 67d to be positioned at position did not separately disturb mutually.

On the other hand, shown in Figure 13 B, when strengthening the folding line action, carry guide 72 owing to carry the pulling force of guide spring 721 to be drawn to the below, the state that the base plate 72a (and pliability parts 73) of conveying guide 72 is in clamping quires (omitting diagram) and is pushed by quires mounting table 715 (and pliability parts 74).

At this moment, be fixed on the bearing sub-assembly 722 and the bar roller 762a that carry on the guide 72 and also be drawn to the below, thus the front end of rod unit 762 state that is in a little down and stops.And shown in Fig. 1 3A, the leading section 761b of cam part 761 stops in the position of the conveying guide supporting station 67d that is parallel to roller unit 60.

When roller unit 60 arrives the opposition side of dead positions, and when getting back near dead position afterwards once more, the conveying guide supporting station 67d of roller unit 60 contacts with the lower surface of the leading section 761b of cam part 761 for the first time.

Then, when roller unit 60 moves to dead position one side once more, carry guide supporting station 67d one side on the lower surface of the twist part 761a of cam part 761, to slide and move on one side.At this moment, because the bending of twist part 761a has produced the power that makes progress to cam part 761, and make axle drive shaft 76 rotations (rotation in the counterclockwise direction in Figure 13 C) that are fixed on the cam part 761.

Be accompanied by the rotation of axle drive shaft 76, rod unit 762 is rotation in the same direction also, and the front end of rod unit 762 rises.Like this, the bar roller 762a in the slotted hole 762b of insertion rod parts 762 is upwards drawn, and is fixed on conveying guide 72 on the bar roller 762a on one side and also revolts the pulling force of conveying guide spring 721 and be moved upward.

When roller unit 60 was got back to dead position fully, the twist part 761a that the conveying guide supporting station 67d of roller unit 60 passes cam part 761 arrived horizontal part 761c, and stops at this.

Because carry the pulling force of guide spring 721, a masterpiece that moves down is used to carry guide 72.But, on dead position, because the horizontal part 761c of cam part 761 places the upper surface of carrying guide supporting station 67d, so can't move downwards.Therefore, axle drive shaft 76 and rod unit 762 are in the state that is under an embargo and is rotated in a clockwise direction, and bar roller 762a and the conveying guide 72 that is fixed thereon can't be moved downwards.

Thus, when roller unit 60 is positioned at dead position, carry guide 72 and pliability parts 73 to be maintained at the state that is upwards lifted.

In this state, the quires that has been reinforced folding line is owing to the rotation of a pair of folding roller 38 is pushed out, and is transported to quires mounting portion 40.In addition, the quires that after this will be reinforced folding line is transferred in this state, so that the position of folding line between pliability parts 73,74.

In order to strengthen folding line, when roller unit 60 leaves dead position, the action of above-mentioned action changeabout.When roller unit 60 began to leave dead position, the conveying guide supporting station 67d of roller unit 60 moved to the position of twist part 761a from the horizontal part 761c of cam part 761.The clockwise masterpiece that is caused by the pulling force of carrying guide spring 721 is used for axle drive shaft 76, is carrying guide supporting station 67d during moving on the curve of twist part 761a, and described axle drive shaft 76 is rotation slowly along clockwise direction.Follow in this, rod unit 762 is also along right-hand revolution, and bar roller 762a, bearing sub-assembly 722 and the conveying guide 72 of being fixed on these parts descend gradually.Finally, carry the base plate 72a of guide 72 and the position that pliability parts 73 arrive quires, the action that stops to descend in the stage of pushing quires with the pulling force of carrying guide spring 721.

So far, folding line mobile, the top roll 51a in the horizontal along quires is illustrated the mobile of above-below direction of the mobile of roller unit 60 in-to-in above-below directions and conveying guide 72 to roller unit 60, these moved put in order, is summarized as follows.

(a) when roller unit 60 is positioned at dead position, carry the pliability parts 73 of guide 72 and upside upwards to be lifted.And roller unit 60 in-to-in top roll 51a are also upwards lifted.

Position on the above-below direction of the pliability parts 74 of quires mounting table 715 and downside is roughly identical with the position of the portion of nipping of a pair of folding roller 38, and irrelevant with moving of roller unit 60, normally fixing.Same, the position on the above-below direction of roller unit 60 in-to-in lower roll 51b is also irrelevant with moving of roller unit 60, and is normally fixing, and the upper end position of lower roll 51b is set at roughly the position identical with the pliability parts 74 of downside.

(b) when roller unit 60 is positioned at dead position, by the portion's of nipping conveying quires of a pair of folding roller 38, when folding line arrived between the pliability parts 73,74, the conveying of quires was temporarily stopped.

(c) at this, driving motor 81 is driven, and roller unit 60 begins to leave dead position by horizontal the moving of unit drives band 87 beginnings.

(d) when roller unit 60 leaves dead position, carry the pliability parts 73 of guide 72 and upside to descend, the base plate 72a by carrying guide 72 is from pushing quires.(action of Figure 13 A-Figure 13 D).Pressing force is the power that is caused by the pulling force of carrying guide spring 721.Carry the down maneuver of guide 72 before roller unit 60 arrives effective drive range, to finish, and be in the state of folding line quilt pliability parts 73,74 clampings up and down of quires.

(e) on the other hand, when roller unit 60 left dead position, roller unit 60 in-to-in top roll 51a also began to descend.Then, push the upper surface (action of Figure 10) of the upside pliability parts 73 of finishing down maneuver.At this moment, on the lower surface of downside pliability parts 74 lower roll 51b is arranged, pliability parts 73,74 are up and down pushed by top roll 51a and lower roll 51b.This pressing force is that the pulling force by roller unit 60 in-to-in springs 68 causes.

(f) after this, roller unit 60 moves along with moving of unit drives band 87.When roller unit 60 arrived the position of quires, top roll 51a contacted with quires by upside pliability parts 73, Yi Bian push the folding line of quires, Yi Bian move along folding line.When roller unit 60 arrived the end of dead position opposition side, the mobile of unit drives band 87 took a turn for the worse, Yi Bian push the folding line of quires, Yi Bian on the loop, move along folding line.And finally get back to dead position.

As mentioned above, in the fold-enhancing unit relevant with present embodiment 50, owing to come the clamping quires by a pair of reinforcement roller 51 of pliability parts 73,74 usefulness up and down, the situation of coil paper can not take place in the end of quires.And, since a pair of reinforcement roller 51 not with the folding line direct contact, therefore can not make and produce fold or scar on the folding line.

In addition, owing to be provided with the conveying guide 72 that can drive on above-below direction, and push the structure of quires by carrying 72 pairs of quires of guide to exert pressure, even therefore a pair of reinforcement roller 51 moves along folding line, quires can lateral excursion yet.

In the past,, proposed to be provided with the structure of fixed parts (stop component) etc., but such fixed parts must be very much inconvenience according to its position of dimension modifying of paper in the end of quires in order to prevent the lateral excursion of quires.

Be directed to this, and in the present embodiment, owing to be provided with the structure of pushing quires by conveying guide 72, the width of described conveying guide 72 fully covers the width of upperlimit paper (for example A3 size), therefore, much no matter the size of paper has, can both prevent the lateral excursion of quires.

In addition, in the fold-enhancing unit relevant 50, be provided with structure with conveying deflector roll 64 of further pushing conveying guide 72 with present embodiment.Shown in Fig. 6 waits, carry deflector roll 64 to be installed on the last link 65 of roller unit 60.When roller unit 60 left dead position, this conveying deflector roll 64 is the same with top roll 51a to descend, from pushing the base plate 72a (with reference to figure 5A, 5B) that carries guide 72.Carry the decline of deflector roll 64 to realize by the physical construction identical with the decline of top roll 51a.Carry guide 72 except being subjected to carrying the pulling force of guide spring 721, also be transferred deflector roll 64 and push, the lateral excursion that prevents quires is strengthened.

What this should be noted that a bit be, in the present embodiment, the above-below direction of the side travel of roller unit 60, roller unit 60 in-to-in top roll 51a (and carrying deflector roll 64) moves and carries the above-below direction of guide 72 to move these three and independently move not by a plurality of drive sources independently and realize, but is that driving motor 81 is realized by the mono-drive source only.Like this, reduce the quantity of driving motor, helped cost degradation and low electrification.And, if realize that with a plurality of driving motors each independently moves, needing mutual mobile synchonize, control circuit has also just complicated like this.And in the present embodiment,, therefore just do not needed the synchronization control circuit between the driving motor owing to realize that with mono-driving motor 81 each moves yet.

(3) a pair of reinforcement roller and near shape, structure thereof

All the time, each roller of a pair of reinforcement roller is normally positive circular.But, when carrying out the folding line reinforcement, in case produce fold in the portion of nipping with a pair of orbicular roller, because the part of eliminating this fold is not in the portion of nipping, sometimes fold can become greatly gradually, and produces continuously, and intensive treatment can become very big fold even damage paper when finishing.In the present embodiment, by pliability parts 73,74 are prevented the generation of fold between quires and a pair of reinforcement roller 51, even but will consider still that like this meeting produces the situation of fold.

And the pressure that intensive treatment produces applies than applying more by face by point (narrow and small part) and produces effect.

Therefore, in a pair of reinforcement roller 51 relevant with present embodiment, its shape is not pure circle, but polygon.Figure 14 A-Figure 14 C is the exemplary plot shape of a pair of reinforcement roller 51 among the figure 6 (also with reference to) of the shape of a roller in the polygonal a pair of reinforcement roller 51.Be made as polygon by shape, reduced the generation of fold roller, and, suppress owing to applying to folding line with polygonal angle, so strengthening, the folding line of more excellent effect becomes possibility.In addition,, never damage the viewpoint of the rotation locomotive function of roller, preferably be no less than the six-sided polygon though polygonal limit number needn't limit especially.

In addition, shown in Figure 14 D, the surface that can be arranged on roller forms the structure of a plurality of grooves that are parallel to S. A..The fold that produces is eliminated at concave part, can prevent the generation of continuous folding.

In addition, shown in Figure 14 E, also can be arranged on the structure of the surface formation of roller with respect to a plurality of grooves of S. A. bevelled.In this case, shown in Figure 14 F, when forming groove, so that have the roller of the groove of same tilt degree, when its groove intersects mutually in the portion of nipping, shown in Figure 14 G, usually produce the effect that continues to exert pressure with point (narrow and small part), reinforcement folding line that can more powerful degree.

In constituting two rollers of pair of rolls, a roller is set at shape shown in Figure 14 A～Figure 14 E, be positive circle with the shape set of another roller, also can obtain roughly the same effect.

In addition, shown in Fig. 6 waited, in the present embodiment, the front and back of the throughput direction of lower roll 51b were provided with guide parts 69.Guide parts 69 form by the snyed plate parts, have horizontal part and rake.Horizontal part be provided in lower roll 51b near, the upper end of lower roll 51b is adjusted to identical height with horizontal part.Rake is from the downward-sloping extension of horizontal part.

As mentioned above, even roller unit 60 moves, the position of the above-below direction of lower roll 51b is also usually fixed.Then, the position of described lower roll 51b is adjusted, and moves with the lower surface along downside pliability parts 74.But, when hang down owing to the deadweight of the deadweight of pliability parts 73,74 or quires in the end of pliability parts 73,74 or quires, the lower portion of the upper end that is lower than lower roll 51b can be run in these ends, can produce the move problem rolled of the end of pliability parts 73,74 or quires because of lower roll 51b.The position of such problem about the position adjustment about the roller unit 60 and pliability parts 73,74 or quires mounting table 715 adjusted under the inadequate situation and also can be produced.

The guide parts 69 relevant with present embodiment are provided with in order to solve such problem, even in the end of pliability parts 73,74 or quires during because of the highly deviated of the upper end from lower roll 51b such as sagging, rake that also can be by guide parts 69 is with lead the indeed upper end of lower roll 51b, the end of pliability parts 73,74 or quires, the portion of nipping of promptly a pair of reinforcement roller 51.

Figure 15 is the figure that each position of the upper end of the 38a of the portion of nipping of expression conveying reference plane S (upper surface of quires mounting table 715) of quires and a pair of folding roller 38 and lower roll 51b concerns.The conveying reference plane S of quires is illustrated by the broken lines.

By the conveying reference plane S of quires is consistent with the 38a of the portion of nipping of a pair of folding roller 38, and consistent with the upper end of lower roll 51b, and the smooth and easy conveying of quires becomes possibility.In addition, because self gravitation, quires can let droop, and therefore carries reference plane can correspondingly be lower than the 38a of the portion of nipping of a pair of folding roller 38.In like manner, how many upper ends of lower roll 51b can be lower than conveying reference plane S.

(4) drive controlling

Below, the drive controlling of (direction that intersects vertically with the throughput direction of quires) describes on the doubling direction to drive controlling on the throughput direction of quires and roller unit 60.

Driving on the throughput direction of quires is undertaken by the folding roller electrical motor (not shown) that makes a pair of folding roller 38 rotations.Rotation by control folding roller electrical motor begins, stops and rotation amount, carries out the control to the mobile beginning on the throughput direction of quires, the mobile opportunity that stops and amount of movement etc.

Drive controlling on the throughput direction of quires has been utilized the switching information of discharging feeding sensor S1.For example, as shown in figure 15, discharge feeding sensor S1 and constitute by being arranged on bar S1a, the anti-dazzle device S1b and the optical sensor S1c that carry on the reference plane S.

Do not having on the quires mounting table 715 under the state of quires, bar S1a is upright, is connected in the light path in the anti-dazzle device S1b blocking optical sensor S1c of bar S1a.This state is for discharging the closed condition of feeding sensor S1.When the leading section of quires passed through bar S1a, bar S1a swung to throughput direction, thus, breaks away from the light path of anti-dazzle device S1b in optical sensor S1c.This state is for discharging the opening of feeding sensor S1.When the folding line intensive treatment of quires finished, quires further moved to throughput direction, and when the rearward end of quires was passed through the position of bar S1a, bar S1a got back to upright state, discharged feeding sensor S1 and got back to closed condition once more.

On the other hand, about the driving on the doubling direction of roller unit 60, the rotation by controlling and driving electrical motor 81 begins, stops and rotation amount, carry out to roller unit 60 mobile beginning, move the opportunity that stops and the control of amount of movement and moving velocity etc.

The drive controlling of roller unit 60 has been utilized the switching information of dead position sensor S2.For example, as shown in figure 15, dead position sensor S2 is made of locational optical sensor S2a that is set in dead position and the anti-dazzle device S2b that is arranged on the bottom of roller unit 60.

When roller unit 60 is positioned at the position of dead position, the light path of anti-dazzle device S2b blocking optical sensor S2a.This state is the opening of dead position sensor S2.When roller unit 60 left dead position, because anti-dazzle device S2b is also mobile together with roller unit 60, so the light path of optical sensor S2a was opened.This state is the closed condition of dead position sensor S2.

Figure 16 is the diagram of circuit of the example handled of drive controlling on the throughput direction of expression quires and the drive controlling on the doubling direction of roller unit 60.

Fig. 17 is expression quires at the mobile halted state on the throughput direction, the on off state of discharging feeding sensor S1, the roller unit 60 mobile halted state on doubling direction and the chronogram of the time relationship of the on off state of dead position sensor S2.

At first, in the step ST1 of Figure 16, quires moves to throughput direction, is transported to fold-enhancing unit 50.Then, judge whether the leading section of quires has arrived the position (step ST2) of discharge feeding sensor S1.This judgement is judged from closing to become to open by discharging feeding sensor S1.And then whether the leading section of judging quires has moved specified amount L1 (step ST3) from the position of discharging feeding sensor S1.This judgement waits according to the pulse count of the coder (not shown) of folding roller electrical motor to be judged.

When the leading section of quires, be folding line when the position of discharging feeding sensor S1 has been transferred specified amount L1, mobile stop (step ST4) of quires on throughput direction.Meanwhile, roller unit 60 is from mobile (outlet) (step ST5) of dead position.

Roller unit 60 one moves slightly from dead position, and the behavior is just detected by dead position sensor S2, and dead position sensor S2 is become by unlatching and closes (step ST6).

Roller unit 60 continues to move, and when specified amount L2 has been moved in the position of closing from dead position sensor S2 (opposition side of dead position), stops to move (step ST7, step ST8).This amount of movement L2 obtains according to pulse count of the coder of driving motor 81 etc.

When roller unit 60 stops at the opposition side of dead position, calculate standing time with suitable calculator, when standing time process fixed time T1 (step ST9), (step ST10) moved in roller unit 60 beginnings (loop) round about.

When roller unit 60 during near dead position, by the position of dead position sensor S2, dead position sensor S2 becomes unlatching (YES of step ST11) by closing.Then, when having moved specified amount L3 (YES of step ST12), mobile the stopping (step ST13) of roller unit 60.In this stage, the folding line intensive treatment finishes, and quires is discharged from (step ST14) from fold-enhancing unit 50.

It more than is the base conditioning flow process of the drive controlling on the doubling direction of drive controlling on the throughput direction of quires and roller unit 60.Variation to above-mentioned basic controlling describes below.

(5) first variation of throughput direction drive controlling

Figure 18 A, Figure 18 B are the scheme drawings of notion of first variation of throughput direction drive controlling.As mentioned above, the set positions that stops to carry quires the front end of quires by the position that has been transferred distance to a declared goal L1 after discharging feeding sensor S1 on (the step ST2 of Figure 16, ST3, ST4).Discharge passing through to be pushed over from erectility and detecting of feeding sensor S1 by bar S1a.More particularly, when bar S1a when erectility has rotated tiltangle, detect and discharge feeding sensor S1 and become unlatching by closing.

But, when the thickness A of quires, B not simultaneously, as Figure 18 A, B for example shown in, the front position that forms the quires of same tilt angle θ differs Δ L.Therefore, the stop position of quires also differs Δ L.Fed distance L1 is preestablished, so that the front end of quires (being folding line) is positioned at the desired locations (for example wide center of roller) of strengthening the roller width.But because the difference of quires thickness, folding line may not necessarily stop on the desired locations.

Therefore, in first variation,, change fed distance L1, so that folding line usually stops on the desired locations of strengthening in the roller width according to the thickness information of quires.

Specifically, when the quires thickening, compare, passing through of the position probing leading section of the more close reinforcement roller of leading section with thin paper is folded.Therefore, be set at by the fed distance that ground paper is folded and be shorter than the folded fed distance of thin paper, the fixedly stop position of leading section.

The thickness information of quires can be pre-estimated from the paper number that bookbinding is handled.And, under the situation of the paper that includes different-thickness, also can estimate paper thickness by the kind of information and the number thereof of paper.Can be in advance the corresponding relation of these thickness information and fed distance L1 be kept in the suitable memory device,, selects best fed distance L1 according to number information and paper type information by input such as operating portion 9 grades.

According to first variation, even under the different situation of quires thickness, the folding line of quires is stopped on the optimum position, therefore can realize the folding line reinforcement action of more optimizing.

(6) second variation of throughput direction drive controlling

Second variation is special effective processing when the very thin thickness of quires.When the thin paper that with binding device paper number is two or three was folded, on the folding line part, the thickness of attachment means was thicker than the thickness of quires self.

When folding intensive treatment, strengthen the surface of roller and bear load because of attachment means to this thin paper is folded.When under the position relation usually identical of the position of attachment means (being the folding line position of quires front end), folding intensive treatment for a long time with the position of strengthening roller, because load concentrates on a place of strengthening roller, the surface of therefore strengthening roller sometimes can sustain damage because of attachment means.

In order to tackle this problem, in second variation, carry out stop position with folding line and be dispersed in processing in the stated limit of strengthening the roller width consciously.

Shown in Figure 19 A, for example,, set fed distance L1 (L1 for first part of quires ₁), so that arriving, folding line strengthens the distolateral of roller, when then second part of quires being folded intensive treatment, with the longer slightly (L1 of fed distance L1 setting ₂).Thus, the stop position of folding line is changed successively in the specified width, which width of strengthening roller, the load that disperses attachment means to bring, but not concentrate on a place.

The process for dispersing of fed distance L1 need not limit especially, for example, shown in Figure 19 B, fed distance L1 indention in the specified width, which width of strengthening roller is changed, and shown in Figure 19 C, also can make it be triangular waveform and change.In addition, shown in Figure 19 D, can also make it be triangular waveform from first part to 2n part and change, later indention changes.

In addition, the nearest value of fed distance L1 that can be when carrying out the folding line intensive treatment is kept in the suitable nonvolatile memory, when next carrying out the folding line intensive treatment, the fed distance L1 that preserves as initial value, is increased or reduces fed distance L1 thus.By this processing, need not to consider interrupting factor such as power-off, the stop position of folding line can be dispersed in the specified width, which width of strengthening roller.

In addition, second variation needn't be carried out when quires is very thick, can judge whether carry out the processing of second variation according to the paper number or the paper type of bookbinding.

(7) variation of doubling direction driving

This variation is the variation about the drive controlling on the doubling direction of roller unit 60.The purpose of this variation also is the influence that is brought by attachment means in order to reduce, and also is the effective processing when quires is very thin.

As mentioned above, for number of paper quires seldom, with respect to the thickness of quires self, can not ignore the thickness of attachment means, and the driving on the doubling direction also begins to be subjected to the influence of attachment means.For example, when a pair of reinforcement roller 51 touches attachment means, can bring impact, can make quires produce lateral excursion, perhaps produce fold to quires.And a pair of reinforcement roller 51 self also can be impaired because of the attachment means surface.

Therefore, in the present embodiment, as shown in figure 20, carry out following speed control, when roller unit 60 during near near (stated limit that comprises the attachment means end) of attachment means, reduce moving velocity from standard speed (first speed), move on attachment means with the speed (second speed) that is slower than standard speed, when by attachment means, quicken and get back to standard speed.A pair of reinforcement roller 51 touch and by during the attachment means owing to be that low speed moves, the impact that therefore brings quires obtains relaxing.And, compare with the situation that on attachment means, moves at a high speed, reduced the damage that a pair of reinforcement roller 51 suffers because of attachment means.

In addition, near roller unit 60 close attachment means, and after moving velocity reduced to second speed from standard speed (first speed), can after a pair of reinforcement roller 51 touches the end of attachment means, get back to standard speed at once, rather than on whole attachment means, move with slower speed (second speed).Because influence maximum when a pair of reinforcement roller 51 touches the end of attachment means that attachment means brings therefore by this speed control, also can relax the impact that brings quires, and can reduce the damage that a pair of reinforcement roller 51 suffers because of attachment means.And, to compare with the situation that on whole attachment means, moves with slower speed (second speed), this method for control speed can shorten the overall movement time of strengthening roller.

In the image processing system relevant 10 with present embodiment, usually fix because the position of attachment means and antiquarian are irrelevant, therefore can decide the opportunity of slowing down and quickening according to the location information of roller unit 60.

In addition, even under the different situation,, can specify the position of attachment means owing to antiquarian, therefore, can determine the opportunity of the deceleration and the acceleration of roller unit 60 equally by obtaining the information of antiquarian in the position of attachment means.

In addition, in this variation, when quires was very thick, because the influence of attachment means diminishes, so present embodiment also needn't carry out when quires is very thick, can judge whether carry out the processing of present embodiment according to the paper number or the paper type of bookbinding.

And, can be according to the thickness setting of the quires speed (second speed) by on the attachment means time.For example, when quires is very thick, the speed setting by on the attachment means time is the speed of being near the mark, and quires is when very thin, sets speed and the difference between the standard speed by on the attachment means time more greatly.

When quires is very thick, therefore mobile also harmless on attachment means owing to the damage that suffers because of attachment means is less with the speed identical or close with standard speed, can shorten the processing time.

In addition, also can quicken and get back to standard speed then roller unit 60 being stopped near the attachment means place.

(8) fold-enhancing unit relevant with other embodiment

Figure 21 A～Figure 21 C is the structural pattern scheme drawing of the fold-enhancing unit 50a relevant with second embodiment.The structure of the fold-enhancing unit 50 relevant with first embodiment is to use a pair of reinforcement roller 51 that is made of top roll 51a and lower roll 51b to strengthen folding line from last clamping quires.And the structure of the fold-enhancing unit 50a relevant with second embodiment is strengthened for strengthening 113 pairs of folding lines of roller by one.

Folding line is strengthened unit 50a and is comprised: roller unit 110; Bolster 120 is used for anvil roll unit 110, so that described roller unit 110 can slide on doubling direction; Mounting table 122 is used for mounting quires 100; Top guide 121 is used for pushing from the top quires 100 that is delivered on the mounting table 122; And paper guide 123, be used to guide the conveying of quires.

Shown in Figure 21 A, the shape of mounting table 122 roughly is trapezoidal from the conveying of quires 100 ground, quires 100 move into mounting table support 122a, the 122b that the zone is lower than its two ends slightly, be the sinking shape.Mounting table 122 is made of hard materials such as metal or hard resins.

Top guide 121 is the banded elastomeric elements that formed by rubber etc., and its two ends are fixed with the tension force of appointment by mounting table supporting station (back plate) 122a, 122b, when roller unit 110 is arranged in dead position (leftward position of Figure 21 A etc.), keeps horizontality.

Paper guide 123 is the film shape parts that form by such as ethylene two fat resin materials such as (PET).For moving into swimmingly of quires 100 carried out, described paper guide 123 has the guide valve 123a that is layed in the top.Paper guide 123 is attached to a plurality of places of the lower surface of top guide 121.

Roller unit 110 comprises support 111, compression spring 112 and strengthens roller 113.

The top of support 111 is provided with the through hole that is used to connect bolster 120, and the driver train by not showing among the figure can slide on the direction of principal axis of bolster 120.

Strengthening roller 113 can rotate freely around the roll shaft (not shown), and described roll shaft can move up at upper and lower with respect to support 111.

One end of compression spring 112 is fixed on the top of support 111, and the other end is fixed in roll shaft.Because the elasticity of compression spring 112, strengthening to act on the roller 113 has downward pressing force.

The same with first embodiment, quires is folded the portion of nipping that blade 37 is filled in a pair of folding roller 38, forms folding line.Thereafter, by the rotation of a pair of folding roller 38, the folding line of quires is transported to the substantial middle portion that strengthens roller 113, and stops.

Then, roller unit 110 is moved on doubling direction.Strengthening roller 113 rotates on the guide 121 on one side in the above, on one side begin to move, when by mounting table support 122a, owing to the elasticity of compression spring 112 descends, and make top guide 121 crooked downwards, push quires (with reference to figure 21C) with the elastic force of compression spring 112.In addition, can produce the elastic force that makes progress that will get back to level attitude from top guide 121, then selected compression spring 112, described compression spring 112 have can resist the elastic force that this elastic force can be pushed with enough big strength downwards.

Because top guide 121 forms by the rubber elastomeric material, therefore strengthen roller 113 and move on the upper surface of guide 121 in the above, rather than slip, and can carry out stable folding line intensive treatment by the elastic force of compression spring 112.And for the overall movement scope of strengthening roller 113, strengthening has top guide 121 to get involved between roller 113 and the quires 100, therefore can the coil paper phenomenon not take place in the end of quires.In addition and since strengthen roller 113 not with quires 100 direct contacts, therefore can near folding line, not produce fold or scar yet.

Shown in the expanded view of Figure 21 A, the upper surface of guide 121 forms tooth bar in the above, forms miniature gears in the outer ring of strengthening roller 113.By the rack-and-pinion structure, above guide 121 and the slip strengthened between the roller 113 be minimized, stable the moving of strengthening roller becomes possibility.In addition, push top guide 121 with pin mark (narrow and small part) owing to strengthen roller 113, therefore can be with bigger pressure consolidated folding line.

In first embodiment, the path of passing through in order to ensure quires, need to be provided with make carry guide 72 and pliability parts 73 about mechanism and make top roll 51a mechanism up and down, and do not need these mechanisms in a second embodiment, can carry out the folding line processing with simple structure.And, can not produce by the noise that moves up and down initiation of carrying guide 72 or top roll 51a.

Figure 22 A～Figure 22 F is the structural pattern figure of the expression fold-enhancing unit 50b relevant with the 3rd embodiment, and special emphasis shows the structure of mounting table 130.The fold-enhancing unit 50b that is correlated with the 3rd embodiment is the same with second embodiment, strengthens roller 113 with one and strengthens folding line.Basic structure difference roughly identical with second embodiment and second embodiment is the upper surface shape of mounting table 130.Therefore, stress at the upper surface shape of mounting table 130 below.

In the 3rd embodiment, do not use the top guide 121 that forms by the rubber elastomeric material.Therefore, cross quires 100A, during the end of B, may have quires is rolled, cause the danger of damage to quires when strengthening roller 113.

Therefore, in the fold-enhancing unit 50b relevant with the 3rd embodiment, be provided with following structure: be equivalent to quires 100A on mounting table 130, the position of the end of B is provided with the 130a of edge removing portion, the 130b of flute profile.

The 130a of edge removing portion is corresponding to large-sized quires 100A (with reference to figure 22A, B), and the removing 130b of portion in edge is corresponding to undersized quires 100B (with reference to figure 22C, D).

Begin to move from dead position when strengthening roller 113, and arrive quires 100A, during the end of B, since the spill effect of the 130a of edge removing portion, 130b, quires 100A, and the end of B lets droop (with reference to figure 22B, 22D) because of strengthening roller 113, can't roll.

And, because corresponding to quires 100A, the position at the both ends of B all is provided with the 130a of edge removing portion, 130b, therefore from the opposition side of dead position on the loop when mobile, because same effect, the end can not rolled yet.

About the flute profile of the edge removing 130a of portion, 130b, as Figure 22 E for example shown in, the side of groove can be the shape of vertical square sectional, as Figure 22 F for example shown in, the side of groove also can be the shape of bevelled trapezoid cross section.

In addition, folding line is in case be reinforced in the outlet, because quires 100A, it is quite thin that B is compressed ground, so just be difficult to take place the coil paper phenomenon on the loop.Therefore, this structure also feasible (two 130a of edge removing portion, the 130b in the left side among Figure 22 A～22D) corresponding to two 130a of edge removing portion, the 130b in outlet only is set.

The present invention is not limited to the various embodiments described above, the implementation phase, can be in the scope that does not break away from its purport with the inscape distortion and specialize.And, according to the appropriate combination of the disclosed a plurality of inscapes of the various embodiments described above, can form the invention of various embodiments.For example, among all inscapes that can from embodiment, be embodied, delete several inscapes.Can also carry out appropriate combination to the inscape that different embodiment relate to.

Claims (7)

1. a sheet post-process apparatus is characterized in that, comprising:

Stapling unit is used for the central portion of the quires that built up by the paper after printing is bound;

Folding unit has a pair of folding roller, is used for filled in the portion of nipping of described folding roller by the described central portion of described stapling unit bookbinding, to form folding line; And

Fold-enhancing unit is used to strengthen the described folding line that forms at described folding unit;

Wherein, described fold-enhancing unit comprises:

Roller unit has first roller and second roller, and on one side with described first roller and the described second roller clamping and push the folding line of the described quires that transports from described folding unit, move along the direction of described folding line on one side;

Drive division is used to make the direction of described roller unit from position of readiness along described folding line to move, and described position of readiness is positioned at the position of leaving described quires end; And

Holding part, have first grip block and second grip block and the first pliability parts and the second pliability parts, the described quires mounting that is used for transporting from described folding unit is on described first grip block and the described first pliability parts, and by described first grip block and described second grip block, the described quires of position clamping between described folding line and described folding unit is by described first pliability parts and the described folding line of the described second pliability parts clamping;

Wherein, it is approximately consistent that the position on the above-below direction of the position on the above-below direction of the portion of nipping of described folding roller and the portion of nipping that is generated by first roller and second roller is adapted to the position of the imaginary plane that the quires mounting surface with described first grip block extends.

2. sheet post-process apparatus according to claim 1 is characterized in that, the position on the above-below direction of described first roller and the location independent of described roller unit are fixed with respect to described imaginary plane; When described roller unit was positioned at described position of readiness, described second roller left described first roller, when described roller unit is positioned at the folding line position of described quires, formed the described portion of nipping by described second roller and described first roller, and with this described folding line of portion's clamping of nipping.

3. sheet post-process apparatus according to claim 1 is characterized in that, the position on the above-below direction of described first grip block and the location independent of described roller unit; When described roller unit was positioned at described position of readiness, described second grip block left described first grip block; After described quires is transported between described first grip block and described second grip block, when described roller unit is positioned at the folding line position of described quires, by described first grip block and described second grip block on one side to the described quires described quires of clamping on one side of exerting pressure.

4. an image processing system is characterized in that, comprising:

Reading part is used to read original copy and generates view data;

Image forming part is used for printing described view data on paper; And

According to each described sheet post-process apparatus in the claim 1 to 3,, bind at least and handle and folding the processing for the paper of printing at described image forming part.

5. a sheet finishing method is characterized in that, comprising:

Central portion to the quires that built up by the paper after printing is bound;

Described central portion after the bookbinding is filled in the portion of nipping of a pair of folding roller in the folding unit, to form folding line;

The described quires mounting that will transport from described folding unit is on described first grip block and the first pliability parts, and by described first grip block and second grip block, the described quires of position clamping between described folding line and described folding unit is by described first pliability parts and the described folding line of the second pliability parts clamping;

Roller unit with first roller and second roller is moved from position of readiness, described position of readiness is positioned at the position of leaving described quires end, and with described first roller and the described second roller clamping and push the folding line of described quires, described first roller and described second roller are moved along the direction of described folding line, thereby strengthen described folding line;

It is approximately consistent that position on the above-below direction of the position on the above-below direction of the portion of nipping of described folding roller and the portion of nipping that is generated by described first roller and described second roller is adapted to the position of the imaginary plane that the quires mounting surface with described first grip block extends.

6. sheet finishing method according to claim 5 is characterized in that, the position on the above-below direction of described first roller and the location independent of described roller unit are fixed with respect to described imaginary plane; When described roller unit was positioned at described position of readiness, described second roller left described first roller, when described roller unit is positioned at the folding line position of described quires, formed the described portion of nipping by described second roller and described first roller, and with this described folding line of portion's clamping of nipping.

7. sheet finishing method according to claim 5 is characterized in that, the position on the above-below direction of described first grip block and the location independent of described roller unit; When described roller unit was positioned at described position of readiness, described second grip block left described first grip block; After described paper bundle is transported between described first grip block and described second grip block, when described roller unit is positioned at the folding line position of described quires, by described first grip block and described second grip block on one side to the described quires described quires of clamping on one side of exerting pressure.

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