CN101445192B - Sheet transporting apparatus - Google Patents

Sheet transporting apparatus Download PDF

Info

Publication number
CN101445192B
CN101445192B CN2008101718184A CN200810171818A CN101445192B CN 101445192 B CN101445192 B CN 101445192B CN 2008101718184 A CN2008101718184 A CN 2008101718184A CN 200810171818 A CN200810171818 A CN 200810171818A CN 101445192 B CN101445192 B CN 101445192B
Authority
CN
China
Prior art keywords
downstream
unit
roller
transporting apparatus
upstream side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2008101718184A
Other languages
Chinese (zh)
Other versions
CN101445192A (en
Inventor
水谷尚树
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Document Solutions Inc
Original Assignee
Kyocera Mita Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008002622A external-priority patent/JP2009161339A/en
Application filed by Kyocera Mita Corp filed Critical Kyocera Mita Corp
Publication of CN101445192A publication Critical patent/CN101445192A/en
Application granted granted Critical
Publication of CN101445192B publication Critical patent/CN101445192B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

The present invention provides a sheet transporting apparatus that can realize a jam disposal mechanism with simple structure and that can achieve size reduction. The sheet transporting apparatus has a manual operation unit that is fitted coaxially with a roller shaft of an upstream-side transport roller or with a roller shaft of a downstream-side transport roller and that, when rotated in a state where drive motors are stationary, makes the upstream-side transport roller shaft and the downstream-side transport roller shaft rotate.

Description

Sheet transporting apparatus
Technical field
The present invention relates to sheet transporting apparatus, particularly relate to and to realize the jam processing mechanism and can save the sheet transporting apparatus in space thus with simple formation.
Background technology
In the past, the image processing system of chopping machine, duplicator, facsimile apparatus and their electronic photo modes such as digital complex machine has sheet transporting apparatus, and this sheet transporting apparatus is used for via the part from chart magazine or manual pallet to image forming part, reads original copy and the image read system that generates view data waits and transports original copy or log sheet.Particularly in large-scale image processing system, such sheet transporting apparatus has in upstream side and downstream that upstream side transports roller (for example shown in Figure 1 transports roller to 18) and roller (aligning roller for example shown in Figure 1 is to 19) is transported in the downstream, transports the CD-ROM drive motor that roller is provided with accordingly and drives the above-mentioned roller that transports by transporting roller and downstream with above-mentioned upstream side respectively.
For example, open in the flat 5-270694 communique the Japanese documentation spy and to have proposed this sheet transporting apparatus, this sheet transporting apparatus comprises and transports roller with upstream side respectively and the downstream is transported the corresponding CD-ROM drive motor of roller, is installed in to transport the upstream side rotation transmission system on the roll shaft that roll forming becomes one with this upstream side and be installed in this downstream and transports downstream rotation transmission system on the roll shaft that roll forming becomes one.Carry out image when form to handle waiting at the image processing system of having assembled this sheet transporting apparatus, this upstream side rotation transmission system of this sheet transporting apparatus and this downstream rotation transmission system are transported roll shaft and the rotation that roll shaft transmits this CD-ROM drive motor is transported in this downstream to this upstream side.
Thus, this upstream side transports roller and the roller rotation is transported in this downstream, transports this thin slice to this downstream.In addition, for when obstruction has taken place in the thin slice that is transported (when jam has taken place) under the state that this CD-ROM drive motor has stopped, removing the thin slice that jam has taken place, this sheet transporting apparatus has the jam that comprises the M/C unit to be handled with the rotation transmission system.Such jam is handled with the rotation transmission system and is connected between this upstream side rotation transmission system and this downstream rotation transmission system, transmit this rotation by making the rotation of this M/C unit to this upstream side rotation transmission system and this downstream rotation transmission system, thereby make this upstream side transport that roller and this downstream transport that roller rotates and the top ends in the carriage direction downstream of this thin slice is transported to the desired location.
But in this sheet transporting apparatus, this M/C unit is present in the space that is sandwiched between this upstream side rotation transmission system and this downstream rotation transmission system.Therefore, need rotate the mechanism that transmission system is transmitted the rotation of this M/C unit to this upstream side rotation transmission system and this downstream, it is complicated that thereby the formation that has caused this jam to handle the rotation transmission system of usefulness becomes, and then produced and the space is set becomes big defective.
Summary of the invention
The present invention In view of the foregoing finishes, and its purpose is to provide a kind of and can realizes the jam processing mechanism and can realize the sheet transporting apparatus of miniaturization of size thus with simple formation.
Can transport roller at this upstream side when in addition, other purposes of the present invention are to provide a kind of thin slice in transporting the way that jam has taken place transports with this downstream form the sheet transporting apparatus that grip also can easily be removed the thin slice that jam has taken place thus between the roller simply on this thin slice.
In order to achieve the above object, sheet transporting apparatus of the present invention makes the upstream side of the carriage direction upstream side that is arranged on thin slice transport roller by CD-ROM drive motor and the downstream that is arranged on the carriage direction downstream of described thin slice is transported roller and rotated and transport described thin slice, wherein, described sheet transporting apparatus comprises the M/C unit, described M/C unit is installed in described upstream side and transports on the identical axle of the roll shaft of roller or roll shaft that roller is transported in described downstream, transports at least one rotation in the roll shaft by making the rotation of described M/C unit make described upstream side transport roll shaft and described downstream under the state that has stopped in described CD-ROM drive motor.
In this sheet transporting apparatus, under the state that this CD-ROM drive motor has stopped, rotate by this M/C unit that this upstream side on the same axle of this M/C unit transports roll shaft or roll shaft is transported in this downstream, make this upstream side transport roller and this downstream and transport at least one rotation in the roller, therefore can constitute this jam processing mechanism with simple formation, thereby can realize the miniaturization of this sheet transporting apparatus.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, comprise slide mechanism, described slide mechanism make described M/C unit described upstream side transport roll shaft or described downstream transport roll shaft axially on slide.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, whether described slide mechanism is to transmitting switching to the rotation of a direction at least of described M/C unit to the roll shaft that described M/C unit is not installed.This be because: according to the jam state of thin slice, just can't eliminate jam if not only making this upstream side transport a rotation of roller and this downstream transporting in the roller sometimes.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: comprise the contact separation unit in above-mentioned sheet transporting apparatus, the transfer printing body that described contact separation unit makes the image carrier that forms output image or is transferred the described output image on the described image carrier with to the transfer printing unit contact of the described output image of described thin slice transfer printing or separate, when described contact separation unit makes described transfer printing unit separate with described image carrier or described transfer printing body, described slide mechanism make described M/C unit switch to along described endwisely slipping can to the roll shaft that described M/C unit is not installed transmit described M/C unit at least to the rotation of a direction.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: described M/C unit is to transport the slip that roller is transported in roller or described downstream away from described upstream side along described axial described slip.
According to this formation,, only when having been separated with this image carrier or this transfer printing body, this transfer printing unit can operate this M/C unit by this contact separation unit and the action of this slide mechanism interlock.Therefore, at this operation knob of operation when transporting the thin slice that jam has taken place, can prevent that the top ends of this thin slice from meeting the abutment portion of this transfer printing unit and this image carrier or this transfer printing body butt (transfer printing impression partial).Therefore, can prevent the damage of this image carrier and this transfer printing body.
In addition, when this transfer printing unit is separated with this image carrier or this transfer printing body, this M/C unit slides axially near this upstream side along this and transports the position that roller is transported in roller or this downstream, therefore can dwindle this axial width of edge that carries out this sheet transporting apparatus of common thin slice when transporting.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: comprise contrarotation mechanism in above-mentioned sheet transporting apparatus, described contrarotation mechanism only transports roll shaft to described downstream and transmits described rotation and make described thin slice side shifting upstream when having made the unit contrarotation of described M/C.This be because: according to the jam state of thin slice, sometimes with transport this thin slice to this carriage direction downstream and compare to this carriage direction upstream side and transport the easier thin slice of removing.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, only transmit make the side direction rotation of moving downstream of described thin slice free-wheel clutch between described M/C unit and described upstream side transports roll shaft or transport between the roll shaft in described downstream.The purpose of doing like this is: carrying out this common thin slice when transporting, even make this upstream side transport roller and roller is transported to this carriage direction downstream direction rotation in this downstream by this CD-ROM drive motor, also can not transmit this rotation to this M/C unit.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, the circumferential velocity that the described upstream side that rotates owing to described M/C unit transports the rotation of roller is set to that to transport the circumferential velocity of rotation of roller than the described downstream that rotates owing to described M/C unit big.
In the present invention, when this upstream side transport roller and this downstream transport roller to this thin slice transport the downstream direction rotation time, this upstream side transports the circumferential velocity big circumferential velocity rotation of roller with the rotation of transporting roller than this downstream.Therefore, for the thin slice that jam has taken place, transporting roller by this upstream side, to transport upwards of movement that downstream direction transports to this bigger than being transported roller by this downstream and transporting the upwards of movement that downstream direction transports to this, therefore transports roller at this upstream side and transport between the roller with this downstream can produce deflection on this thin slice.
Therefore, according to the present invention, upstream side transports roller and transport in the sheet transporting apparatus of roller in the downstream having, when obstruction (so-called jam) has taken place in the thin slice in transporting the way, can transport roller and this downstream at this upstream side and transport between the roller and on this thin slice, form grip, can easily remove the thin slice that jam has taken place thus.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, described M/C unit comprises upstream side turning unit and downstream turning unit, described upstream side turning unit and described downstream turning unit comprise belt wheel respectively, set the poor of described circumferential velocity by the impeller diameter ratio of described belt wheel.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, described M/C unit comprises upstream side turning unit and downstream turning unit, described upstream side turning unit and described downstream turning unit comprise gear respectively, recently set the poor of described circumferential velocity by the gear of described gear.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, the diameter that described upstream side transports roller is set to that to transport the diameter of roller than described downstream big.
In addition, sheet transporting apparatus of the present invention also can be in the following ways: in above-mentioned sheet transporting apparatus, described upstream side transports the path of transporting of roller and described downstream transporting between the roller and is provided with and is used to take out the spatial portion that has produced the thin slice of deflection owing to the difference of described circumferential velocity.
According to the present invention, under the state that this CD-ROM drive motor has stopped, rotate by this M/C unit that this upstream side on the same axle of this M/C unit transports roll shaft or roll shaft is transported in this downstream, make this upstream side transport roller or the roller rotation is transported in this downstream.Therefore, can constitute this jam processing mechanism with simple formation, thereby can realize the miniaturization of this sheet transporting apparatus.In addition, according to the present invention, when making this upstream side transport roller and this downstream when transporting roller to the transporting downstream direction and rotated of this thin slice by the M/C unit, this upstream side transports the circumferential velocity big circumferential velocity rotation of roller with the rotation of transporting roller than this downstream.Therefore, transporting roller by this upstream side, to transport upwards of movement that downstream direction transports to this bigger than being transported roller by this downstream and transporting the upwards of movement that downstream direction transports to this, therefore transports roller at this upstream side and transport between the roller with this downstream can produce deflection on this thin slice.
Therefore, according to the present invention, upstream side transports roller and transport in the sheet transporting apparatus of roller in the downstream having, when obstruction (so-called jam) has taken place in the thin slice in transporting the way, can transport roller and this downstream at this upstream side and transport between the roller on thin slice of jam has taken place for this and form grip, thereby can easily take out this thin slice from being arranged on the spatial portion that transports on the path.
Description of drawings
Fig. 1 is the section drawing of main portion of the image forming part X of the expression sheet transporting apparatus X1 that comprises embodiments of the present invention;
(a) of Fig. 2 is the concise and to the point planar view of sheet transporting apparatus X1-1 that has omitted first embodiment of driven voller 18b and 19b;
(b) of Fig. 2 is the concise and to the point lateral plan that has omitted the operation knob 28 (example of M/C unit) among (a) of Fig. 2;
(a) of Fig. 3 is the concise and to the point planar view of sheet transporting apparatus X1-2 that has omitted second embodiment of driven voller 18b and 19b;
(b) of Fig. 3 is the concise and to the point lateral plan that has omitted the operation knob 28 (example of M/C unit) among (a) of Fig. 3;
(a) of Fig. 4 is the concise and to the point planar view of sheet transporting apparatus X1-3 that has omitted this driven voller 18b and 19b and comprised the circumferential component of transfer belt rotation roller 17;
(b) of Fig. 4 is the concise and to the point lateral plan of Fig. 4 (a);
Fig. 5 is used to illustrate the effect of sheet transporting apparatus X1 of embodiments of the present invention and the concise and to the point lateral plan of effect;
(a) of Fig. 6 is the concise and to the point planar view that has omitted the sheet transporting apparatus X1-4 of driven voller 18b and 19b;
(b) of Fig. 6 is the concise and to the point lateral plan that has omitted the operation knob 28 (example of M/C unit) among (a) of Fig. 6;
(a) of Fig. 7 is the concise and to the point planar view that has omitted the sheet transporting apparatus X1-5 of driven voller 18b and 19b;
(b) of Fig. 7 is the concise and to the point lateral plan that has omitted the sheet transporting apparatus X1 of the operation knob 28 (example of M/C unit) among (a) of Fig. 7;
(a) of Fig. 8 is the concise and to the point planar view of sheet transporting apparatus X1-6 that has omitted this driven voller 18b and 19b and comprised the circumferential component of transfer belt rotation roller 17;
(b) of Fig. 8 is the concise and to the point lateral plan of the sheet transporting apparatus X1-6 among (a) of Fig. 8.
The specific embodiment
Embodiments of the present invention are described with reference to the accompanying drawings, for understanding the present invention.Following embodiment only is to have specialized an example of the present invention, does not limit technical scope of the present invention.
Fig. 1 is the section drawing of main portion of the image forming part X of the expression sheet transporting apparatus X1 that comprises embodiments of the present invention, Fig. 2 is the concise and to the point planar view of sheet transporting apparatus X1-1 of first embodiment and concise and to the point lateral plan, Fig. 3 is the concise and to the point planar view of sheet transporting apparatus X1-2 of second embodiment and concise and to the point lateral plan, and Fig. 4 comprises the concise and to the point planar view of sheet transporting apparatus X1-3 of the 3rd embodiment of circumferential component of transfer belt rotation roller 17 and concise and to the point lateral plan.
The formation of the image forming part X of the sheet transporting apparatus X1 that comprises embodiments of the present invention at first, is described with reference to Fig. 1.The image processing system of chopping machine, duplicator, facsimile apparatus and their electronic photo modes such as digital complex machine has image forming part X shown in Figure 1.
As shown in Figure 1, image forming part X comprises: photosensitive drums 10 (example of image carrier), carry the toner picture in its surface; Electro-mechanical part 11 makes the surperficial uniform charged of this photosensitive drums 10; Exposure portion 12 exposes to the surface irradiation laser of this photosensitive drums 10 and by this irradiates light, writes electrostatic latent image thus; Development section 13 is the toner picture by developing to this electrostatic latent image supplying toner (example of developer); Density Detection portion 14, detection is developed the density of the toner picture of portion's 13 developments; Cleaning section 15 is removed the toner picture that is developed on the surface of photosensitive drums 10; And transfer belt 16 (example of transfer printing body), be erected on the transfer belt rotation roller 17,17 (example of transfer printing unit), transported the log sheet (example of thin slice) that transports from sheet transporting apparatus X1, the toner picture that transfer printing forms by these transfer belt rotation roller 17,17 rotation drivings on the surface of photosensitive drums 10.
The sheet transporting apparatus X1 conduct of present embodiment is arranged on never graphic chart magazine or manual pallet to the log sheet in the part of this image forming part X transports system and brings into play function.But, this sheet transporting apparatus X1 not only can be used as this log sheet and transports system's performance function, but also can be applied to transport system with the inferior various thin slices that are used to transport this original copy or this log sheet: read original copy (example of thin slice) and generate the image read system of view data; For two faces reading original copy by this image read system and generate view data and reverse and read the original copy reverse system that transports to image read system once more behind the surperficial original copy by this image read system; And the log sheet reverse system that transports to this image forming part X once more behind the counter-rotating log sheet (example of thin slice) that carried out developing in the surface by this image forming part X.
In the sheet transporting apparatus X1 of present embodiment, never the log sheet that graphic chart magazine or manual pallet transport be transported to comprise the rotation transmission that receives CD-ROM drive motor M1 and the driven roller 18a that rotates and be in contact with it and the driven voller 18b that rotates transport roller to 18 (upstream side transports an example of roller) after, further transported by this that roller transports 18 and by up and down relatively the formation taper path of configuration transport guide 20.Then, this log sheet be admitted to comprise the rotation transmission that receives CD-ROM drive motor M2 and the driven roller 19a that rotates and be in contact with it and the aligning roller of the driven voller 19b that rotates to 19 (example of roller is transported in the downstream).
Here, this transport guide 20 on transport guide 20a and transport down guide 20b and be arranged to taper with respect to the carriage direction of this log sheet and constitute the taper path, by transporting guide 20a on this and should transporting guide 20b down and utilization is transported roller and guided this log sheets to aligning roller to 19 to 18.And this aligning roller will transport this log sheet that guide 20 sends into and toner picture by this to 19 and be developed synchronised ground transport to the surface of this photosensitive drums 10 and the abutment portion of this transfer belt 16 butts (transfer printing impression portion) on the surface of this photosensitive drums 10.
Below, the object lesson of the sheet transporting apparatus X1 of present embodiment is divided into the sheet transporting apparatus X1-1 of first embodiment, the sheet transporting apparatus X1-2 of second embodiment and the sheet transporting apparatus X1-3 of the 3rd embodiment is described in detail.Below, employed term " upstream side " means the upstream side on the carriage direction of this thin slice in the explanation of first embodiment to the, three embodiments, term " downstream " means the downstream on the carriage direction of this thin slice.In addition, in the following description, will " rotation so that thin slice upstream side direction move " abbreviate " side direction rotation upstream " as.
[first embodiment]
At first, according to Fig. 2 sheet transporting apparatus X1-1 is described.(a) of Fig. 2 omitted the driven voller 18b of sheet transporting apparatus X and the concise and to the point planar view of 19b, and (b) of Fig. 2 is the concise and to the point lateral plan that has omitted the sheet transporting apparatus X1-1 of the operation knob 28 (example of M/C unit) among (a) of Fig. 2.In this sheet transporting apparatus X1-1, the axle of this driven roller 18a (upstream side transports an example of roll shaft) 18a1 rotates via not shown bearing and is installed in freely on the shaft supporting part 27a1, and described shaft supporting part 27a1 is arranged on the side plate 27 that forms as one with not shown pedestal.In addition, on the axle identical, the operation knob 28 that forms as one with belt wheel 24 is installed via free-wheel clutch 22 with this upstream side drive roller shaft 18a1.This operation knob 28 also can be installed on the axle identical with downstream drive roller shaft 19a1 (example of roll shaft is transported in the downstream).
On the other hand, in this sheet transporting apparatus X1-1, this downstream drive roller shaft 19a1 rotates via not shown bearing and is installed in freely on the shaft supporting part 27a2, and described shaft supporting part 27a2 is arranged on this side plate 27.In addition, on the axle identical, belt wheel 25 is installed via free-wheel clutch 23 with this downstream drive roller shaft 19a1.And putting on the shelf at this belt wheel 24 and this belt wheel 25 is provided with wheel and is with 26.
In this sheet transporting apparatus X1-1, at this CD-ROM drive motor M1, when M2 stops, by cut-out CD-ROM drive motor M1, M2 such as different power-transfer clutch and this transport roller to 18 and this aligning roller to 19 binding, make this transport roller to 18 and this aligning roller can freely rotate 19.At this moment, the belt wheel 24 that forms as one with this operation knob 28 when rotation this operation knob 28 and making and all transport downstream direction (being anticlockwise direction) when having rotated in Fig. 2 with 26 belt wheels 25 that link with this belt wheel 24 to this thin slice by wheel, this free- wheel clutch 22,23 only to this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 transmit this belt wheel 24,25 to this rotation of transporting downstream direction, make this transport roller to 18 and this aligning roller transport the downstream direction rotation to 19 to this.But, for can not being passed on this operation knob 28 of this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 when forming image to this rotation of transporting downstream direction, this free- wheel clutch 22,23 is constituted as the rotation of only transmitting to a direction, and this rotation can not be passed to this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 and goes up and make this belt wheel 24,25 idle running when having made in the carriage direction updrift side that makes this belt wheel 24,25 to this thin slice (being clockwise direction in Fig. 2) contrarotation.
Promptly, in sheet transporting apparatus X1-1, when the driving by this CD-ROM drive motor M1 makes this upstream side drive roller shaft 18a1 rotation and the driving by this CD-ROM drive motor M2 that this downstream drive roller shaft 19a1 is rotated to transport thin slice, because this free- wheel clutch 22,23 is respectively between between this upstream side drive roller shaft 18a1 and this belt wheel 24 and between this downstream drive roller shaft 19a1 and this belt wheel 25, so this belt wheel 24,25 is that benchmark dallies with this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1.Thus, stoped this operation knob 28 rotations, and the load that can alleviate CD-ROM drive motor M1, M2.
On the other hand, when making this operation knob 28 of being installed on the axle identical under the state that has stopped at CD-ROM drive motor M1, M2 as mentioned above to the transporting downstream direction and rotated of this thin slice with this upstream side drive roller shaft 18a1 or this downstream drive roller shaft 19a1, this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 are owing to be erected on this belt wheel 24,25 this and take turns and be with 26 and therefore rotation simultaneously can remove the jam that takes place in this sheet transporting apparatus X1.
Thus, at least when this operation knob 28 that is installed on identical with this upstream side drive roller shaft 18a1 or this downstream drive roller shaft 19a1 axle has been rotated this upstream side drive roller shaft 18a1 or this downstream drive roller shaft 19a1 can rotate.Therefore, can realize the jam processing mechanism by having the simple formation that is installed in the operation knob 28 on the axle identical, thereby can realize the miniaturization of sheet transporting apparatus X1 with this upstream side drive roller shaft 18a1 or this downstream drive roller shaft 19a1.
[second embodiment]
Then, according to Fig. 3 this sheet transporting apparatus X1-2 is described.Here, (a) of Fig. 3 omitted the driven voller 18b of sheet transporting apparatus X1-2 and the concise and to the point planar view of 19b, and (b) of Fig. 3 is the concise and to the point lateral plan that has omitted the operation knob 28 (example of M/C unit) among (a) of Fig. 3.Mark identical label and omit its explanation for the parts identical with sheet transporting apparatus X1-1 shown in Figure 2.
In this sheet transporting apparatus X1-2, carrying out common thin slice when transporting (when non-jam is handled), be installed in sliding freely on the upstream side drive roller shaft 18a1 of driven roller 18a operation knob 28 all the time by spring 33 elastic bodys such as (examples of slide mechanism) to vertical with this side plate 27 and away from the direction application of force of side plate 27.Therefore, carrying out common thin slice when transporting, become the gear 29 that forms as one with operation knob 28 not with idle pulley 31 ingear states (representing) with the solid line among Fig. 3.
In such formation, carrying out common thin slice when transporting, the driving by this CD-ROM drive motor M1 makes this upstream side drive roller shaft 18a1 rotation, and makes this downstream drive roller shaft 19a1 rotation by the driving of this CD-ROM drive motor M2.Shown in the solid line among Fig. 3, under the state that this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 have been rotated, since carry out common thin slice when transporting and the gear 29 that forms as one of operation knob 28 be in not and idle pulley 31 ingear states, therefore even this operation knob 28 is owing to the rotation of this upstream side drive roller shaft 18a1 has been rotated, this rotation can not be passed on the downstream drive roller shaft 19a1 of fitting operation knob 28 not yet.Therefore, do not need as this sheet transporting apparatus X1-1, between this downstream drive roller shaft 19a1 and belt wheel 25, free-wheel clutch 23 to be set, thereby reduced cost, and can alleviate the load of CD-ROM drive motor M1.
On the other hand, when carrying out the jam processing, if under the state that CD-ROM drive motor M1, M2 have stopped to the direction push operation knob 28 of side plate 27, then the application of force that the gear 29 that forms as one with operation knob 28 can these springs 33 of opposing and to the direction of side plate 27 move and with idle pulley 31 engagements (representing) with the dotted line among Fig. 3.When side direction (in Fig. 3 for anticlockwise direction) is when having rotated operation knob 28 downstream under this state, this gear 29 can be thereupon to same direction rotation.So, (being clockwise direction in Fig. 3) rotation and the rotation of transmitting these gears 29 to this gear 30 round about of this idle pulley 31, so this gear 30 rotates to the downstream direction (be anticlockwise direction in Fig. 3) of this gear 29,30 with this gear 29.
Thus, when making this operation knob 28 when this downstream direction has been rotated, this transport roller to 18 and this aligning roller to 19 to this transport roller to 18 and this aligning roller to this downstream direction rotation of 19.On the contrary, when with this operation knob 28 under the state that the direction of side plate 27 has been pressed into when the direction opposite with this carriage direction rotated this operation knob 28, this operation knob 28 is owing to free-wheel clutch 22 dallies, but the rotation meeting of this operation knob 28 is passed on the drive roller shaft 19a1 of this downstream by this idle pulley 31 and this gear 30, therefore can only make this downstream drive roller shaft 19a1 to the direction rotation opposite with carriage direction.
Therefore, in the present embodiment, realized the contrarotation mechanism among the present invention by this free-wheel clutch 22, gear 30 and idle pulley 31.Therefore, can this transport roller to 18 and this aligning roller make between to 19 thin slice produce deflection and form grip, thereby can assign to easily remove this thin slice by gripping this grip part.
[the 3rd embodiment]
Then, according to Fig. 4 sheet transporting apparatus X1-3 is described.Here, (a) of Fig. 4 is the concise and to the point planar view of sheet transporting apparatus X1-3 that has omitted this driven voller 18b and 19b and comprised the circumferential component of transfer belt rotation roller 17, and (b) of Fig. 4 is the concise and to the point lateral plan of the sheet transporting apparatus X1-3 among (a) of Fig. 4.Mark identical label and omit its explanation for the parts identical with this sheet transporting apparatus X1-2 with this sheet transporting apparatus X1-1.
In sheet transporting apparatus X1-3, on the axle identical, operation knob 28 (example of M/C unit) is installed slidably with downstream drive roller shaft 19a1.When this photosensitive drums 10 was with these transfer belt rotation roller 17 butts in the downstream of downstream drive roller shaft 19a1, this operation knob 28 was accommodated in the protecting cover 38 to side plate 27 application of forces by spring 33 elastic bodys such as grade all the time.Under this state, this operation knob 28 is in and this driven roller 19a and the state that being connected of idle pulley 41 has been cut off.
In addition, on the axle identical, gear 39 is installed via this free-wheel clutch 22 with upstream side drive roller shaft 18a1.And, on this downstream direction of this downstream drive roller shaft 19a1, have operation knob push-off pin 35.In case make this operation knob push-off pin 35 after this downstream direction (in Fig. 4, being anticlockwise direction) rotation, cam 34 can be along with this rotation to same direction rotation, and the axle of the transfer belt rotation roller 17 that is supported by this cam 34 via not shown support unit thus descends.And after making this operation knob push-off pin 35 arrive the position of the imaginary drawing of representing with the single-point line, this photosensitive drums 10 is separated with this transfer belt rotation roller 17.In addition, in case make this operation knob push-off pin 35 after this downstream direction rotation, gear 36 rotates to same direction along with this rotation, so by slide mechanism described later, the application of force of operation knob 28 antagonistic springs 33 and this downstream drive roller shaft 19a1 axially on move and eject from this protecting cover 38.At this moment, this operation knob 28 and this downstream drive roller shaft 19a1 and this gear 39 combine (long and two-short dash line with Fig. 4 (a) is represented).
In this sheet transporting apparatus X1-3, carrying out common thin slice when transporting, this CD-ROM drive motor M1 drives and makes this upstream side drive roller shaft 18a1 rotation, and this CD-ROM drive motor M2 drives and make this downstream drive roller shaft 19a1 rotation.At this moment, this operation knob 28 dallies owing to being cut off with being connected of this downstream drive roller shaft 19a1, this gear 39 owing to and this upstream side drive roller shaft 18a1 between have this free-wheel clutch 22 and dally.Therefore, can alleviate the load of CD-ROM drive motor M1, M2.
On the other hand, when carrying out the jam processing, under the state that CD-ROM drive motor M1, M2 have stopped, make operation knob push-off pin 35 rotate to the position of representing with the imaginary line of single-point line as mentioned above, this photosensitive drums 10 is separated with this transfer belt rotation roller 17, and make this operation knob 28 and this downstream drive roller shaft 19a1 and 39 engagements of this gear.
On the contrary, when this operation knob push-off pin 35 has rotated to the original position of representing with solid line, cam 34 rotates to the upstream side direction (being clockwise direction in Fig. 4) of this cam 34 with its interlock, and transfer belt rotation roller 17 moves to the direction with photosensitive drums 10 butts owing to this rotation.
In addition, gear 36 is side direction rotation upstream owing to the rotation of cam 34, and operation knob is released gear 40 side direction rotation upstream thus, and this operation knob 28 turns back to the original position of representing with solid line.Therefore, in the sheet transporting apparatus X1 of present embodiment, by having this cam 34 and this operation knob push-off pin 35 specific implementation the contact separation unit among the present invention, in addition by formation described later specific implementation the slide mechanism among the present invention, cooperate with this slide mechanism and realized above-mentioned effect in this contact separation unit.
Here, this downstream drive roller shaft 19a1 and this operation knob 28 have following formation for combination.This operation knob 28 is penetrated by this downstream drive roller shaft 19a1 and comprises that mainly gear part 28a and grip part 28c, described gear part 28a have the active flank 28b that is formed with a plurality of pawls on the face of the direction (below being) opposite with the face of facing this side plate 27 in Fig. 4.In addition, be fixed with the engagement top ends 19a2 that is formed with a plurality of pawls in the marginal portion in the top ends of this downstream drive roller shaft 19a1,19a2 is relative with this active flank 28b for this engagement top ends.
In the sheet transporting apparatus X1 of present embodiment, formation by such this downstream drive roller shaft 19a1 He this operation knob 28, the engagement top ends 19a2 of this downstream drive roller shaft 19a1 and the active flank 28b of this operation knob 28 engagement, the rotation of this operation knob 28 is transmitted to this downstream drive roller shaft 19a1.Under the state that combines at this operation knob 28 and this downstream drive roller shaft 19a1 and this gear 39 to this downstream direction (being anticlockwise direction in (b) at Fig. 4) of this operation knob 28 when having rotated this operation knob 28, this rotation is passed on the drive roller shaft 19a1 of this downstream, and this downstream drive roller shaft 19a1 rotates to this downstream direction (being anticlockwise direction in Fig. 4).
Meanwhile, the rotation of this operation knob 28 also is passed on this idle pulley 41, and the rotation of this idle pulley 41 is passed on this gear 39, and this gear 39 is to this downstream direction (being anticlockwise direction in (b) at Fig. 4) rotation of this gear 39.Therefore, make this operation knob 28 to this downstream direction (in Fig. 4 for anticlockwise direction) when having rotated, this transport roller to 18 and this aligning roller to 19 to this downstream direction (in Fig. 4, being anticlockwise direction) rotation.
On the other hand, under the state that combines at this operation knob 28 and this downstream drive roller shaft 19a1 and this gear 39, make this operation knob 28 to reversing sense (i.e. this upstream side direction of this operation knob 28) when having rotated, though should rotation can be passed on this downstream drive roller shaft 19a1 and this gear 39, can not be passed on this upstream side drive roller shaft 18a1 owing to the function of this free-wheel clutch 22.Therefore, in the sheet transporting apparatus X1 of present embodiment, this contrarotation mechanism mainly comprises this free-wheel clutch 22, this engagement top ends 19a2 and this active flank 28b.Therefore, make these operation knob 28 contrarotations and only make this downstream drive roller shaft 19a1, make this thin slice generation deflection and remove this thin slice between to 19 with this aligning roller 18 thereby can transport roller at this to the rotation of this upstream side direction.
Here, this slide mechanism is arranged on this side plate 27, and comprises that the jut that has with corresponding size of jut 40d described later and shape penetrates hole 27a4, this spring 33, this gear 36, this idle pulley 37 and this operation knob release gear 40.Operation knob is released gear 40 and is comprised that mainly being formed on this operation knob releases the diameter of gear part 40a, diameter and downstream drive roller shaft 19a1 on the surrounding wall portion of gear 40 and correspondingly penetrate hole 40b, cover this periphery that penetrates hole 40b and erect wall 40c and this jut 40d with respect to side surface part 40e to what vertical direction erected.
In addition, not only graphic side surface part 40e is provided with this and erects wall 40c, but also being provided with this, the side surface part 40e at its back side erects wall 40c, the end face that erects wall 40c of a side surface part 40e side and side plate 27 butts, the end face that erects wall 40c of another side surface part 40e side and operation knob described later 28 butts.And, this jut 40d is arranged to parallel with the circumferencial direction of side surface part 40e, and is provided with the rake 40d1 that uprises in vertical direction with respect to side surface part 40e to the other end (end in the downstream of this jut 40d) from an end (end of the upstream side of this jut 40d).
And this jut 40d penetrates into this jut and penetrates among the 27a4 of hole, releases gear 40 when its downstream direction has been rotated when this operation knob, and this jut 40d rotates to the direction of arrow A thereupon.So, rake 40d1 also when penetrating the internal perisporium face butt of hole 27a4 with this jut the direction to arrow A move, the result penetrates that hole 27a4 deviates from and the side that jumps onto side plate 27 from this jut.Thus, resist the application of force of spring 33 described later and release operation knob 28.
On the contrary, when this operation knob is released gear 40 when its upstream side direction has been rotated, this jut 40d penetrates into this jut and penetrates among the 27a4 of hole owing to rake 40d1 moves to the direction opposite with arrow A.
Such slide mechanism is cooperated with this contact separation unit and is brought into play above-mentioned effect, therefore carrying out common thin slice when transporting, form this operation knob 28 and be contained in the in-to-in state of protecting cover 38, only operation knob 28 is released and can be used from the inside of protecting cover 38 when carrying out the jam processing, can form sheet transporting apparatus X1 by succinct design thus.
In addition, can use operation knob 28 to carry out jam when making this transfer belt rotation roller 17 leave this photosensitive drums 10 by this contact separation unit and handle, the downstream top ends that therefore can prevent the thin slice of jam be run into transfer printing impression portion and is damaged this photosensitive drums 10 and this transfer belt 16.
Then, explain sheet transporting apparatus X1 in the embodiment 4～6 with reference to Fig. 5～Fig. 8.Fig. 5 is used to illustrate the effect of sheet transporting apparatus X1 of embodiments of the present invention 4～6 and the concise and to the point lateral plan of effect, the (a) and (b) of Fig. 6 are the concise and to the point planar view of sheet transporting apparatus X1-1 of the 4th embodiment and concise and to the point lateral plan, the (a) and (b) of Fig. 7 are the concise and to the point planar view of sheet transporting apparatus X1-2 of the 5th embodiment and concise and to the point lateral plan, and the (a) and (b) of Fig. 8 are to comprise the concise and to the point planar view of sheet transporting apparatus X1-6 of the 6th embodiment of circumferential component of transfer belt rotation roller 17 and concise and to the point lateral plan.
In the sheet transporting apparatus X1 of embodiment 4～6, this transport roller to 18 and this aligning roller to 19 be configured to when by M/C to log sheet P transport downstream direction when rotation this to transport roller be the circumferential velocity bigger to 19 circumferential velocity V2 than this aligning roller to 18 circumferential velocity V1.Therefore, in this sheet transporting apparatus X1, M/C unit 28-1,2,3 be constituted as make this transport roller to 18 with than of the circumferential velocitys big circumferential velocity rotation of this aligning roller to 19 rotations.
Thus, transport roller by this and transport velocity ratio that downstream direction transports this log sheet P to 18 to this and transport downstream direction to 19 to this by this aligning roller to transport the speed of this log sheet P big, it is bigger to the upwards of movement of the 19 log sheet P that transport than transporting roller by this to the upwards of movement of the 18 log sheet P that transport therefore to transport roller by this.
Therefore, as shown in Figure 5, this transport roller to 18 and this aligning roller to 19 between this log sheet P deflection can take place, thereby can by make this transport roller to 18 and this aligning roller between to 19, transport the crooked upward spatial portion that forms of guide 20a on for example shown in Figure 1 and form as shown in Figure 5 grip, so can easily catch and remove this log sheet P.In the sheet transporting apparatus X1 of embodiment 4～6, when this M/C unit 28-1,2,3 M/C this transports roller in the setting to 19 circumferential velocity V2 of 18 circumferential velocity V1 and this aligning roller, if this aligning roller set for almost 19 transportation speed approach " 0 ", then this aligning roller approaches " 0 " to the upwards of movement of 19 couples of this log sheet P.Therefore, when transporting the thin slice that jam has taken place by M/C, the top ends of this log sheet P is difficult to enter into the gap S shown in Fig. 5, and is difficult to be stuck in this thin slice and transports in the path 21, removes log sheet P and becomes and be more prone to thereby make.
Therefore, even the top ends of the P of this log sheet midway that form to handle at image enters into this gap S and is stuck in this thin slice and transports in the path 21 and formed jam and caused transporting of this log sheet P to stop, also can by this M/C unit 28-1,2,3 under the situation that the jam that can not make this log sheet P worsens this transport roller to 18 and the spatial portion of this aligning roller between to 19 form the grip of this log sheet P, so the user can easily catch this grip and remove this log sheet P.
Below, the object lesson that can be applied to this sheet transporting apparatus X1 of present embodiment 4～6 is divided into the sheet transporting apparatus X1-5 of the sheet transporting apparatus X1-4 of the 4th embodiment, the 5th embodiment and the sheet transporting apparatus X1-6 of the 6th embodiment is described in detail.
[the 4th embodiment]
At first, according to Fig. 6 sheet transporting apparatus X1-4 is described.Here, (a) of Fig. 6 is the concise and to the point planar view that has omitted the sheet transporting apparatus X1-4 of driven voller 18b and 19b, and (b) of Fig. 6 is the concise and to the point lateral plan that has omitted the sheet transporting apparatus X1-4 of the operation knob 28 (example of M/C unit) among (a) of Fig. 6.In this sheet transporting apparatus X1-4, M/C unit 28-1 comprises that mainly belt wheel 24 (example of upstream side turning unit), belt wheel 25 (example of downstream turning unit), operation knob 28 (example of M/C unit), wheel are with 26 (rotation links an example of parts) and free-wheel clutchs 22,23.Below, explain the formation of the sheet transporting apparatus X1-4 with this M/C unit 28-1.
In this sheet transporting apparatus X1-4, the axle of this driven roller 18a (upstream side transports an example of roll shaft) 18a1 rotates via not shown bearing and is installed in freely on the shaft supporting part 27a1, and this shaft supporting part 27a1 is arranged on the side plate 27 that forms as one with not shown pedestal.In addition, on the axle identical, the operation knob 28 that forms as one with belt wheel 24 is installed via free-wheel clutch 22 with this upstream side drive roller shaft 18a1.This operation knob 28 also can be installed on the axle identical with this downstream drive roller shaft 19a1 (example of roll shaft is transported in the downstream).This be because: even this operation knob 28 is installed on identical with this downstream drive roller shaft 19a1 axle, in this sheet transporting apparatus X1-4, also can constitute this M/C unit 28-1.
On the other hand, in this sheet transporting apparatus X1-4, downstream drive roller shaft 19a1 rotates via not shown bearing and is installed in freely on the shaft supporting part 27a2, and this shaft supporting part 27a2 is arranged on this side plate 27.In addition, on the axle identical, belt wheel 25 is installed via free-wheel clutch 23 with this downstream drive roller shaft 19a1.And, putting on the shelf at this belt wheel 24 and this belt wheel 25 is provided with wheel and is with 26, and the impeller diameter ratio between this belt wheel 24 and this belt wheel 25 is set to following impeller diameter ratio: the big circumferential velocity ratio of circumferential velocity V2 when the circumferential velocity V1 in the time of can obtaining this and transport roller and rotate owing to this M/C unit 28-1 18 rotates owing to this M/C unit 28-1 19 than this aligning roller.Thus, when transporting log sheet by this M/C unit 28-1, this transport roller to 18 and this aligning roller can form the flexed portion of this log sheet P between to 19.
In the present embodiment, the setting of this impeller diameter ratio is that pulley diameters by making this belt wheel 24 is than little the carrying out of pulley diameters of this belt wheel 25.This is because this aligning roller circumferential velocity big to 19 circumferential velocity V2 that this sheet transporting apparatus X1-4 can access when rotating owing to this M/C unit 28-1 this when transporting roller 18 circumferential velocity V1 being rotated than owing to this M/C unit 28-1.
In this sheet transporting apparatus X1-4, at this CD-ROM drive motor M1, when M2 stops, when making by wheel and all transport downstream direction (being anticlockwise direction) when having rotated in Fig. 5 to this thin slice with 26 these belt wheels 24 that link (belt wheel that forms as one with this operation knob 28) and belt wheel 25 by rotating this operation knob 28, this free- wheel clutch 22,23 only transmit this belt wheel 24 to this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1,25 to this rotation of transporting downstream direction, make this transport roller to 18 and this aligning roller transport downstream direction rotation with this impeller diameter ratio to this to 19.
Here, " at this CD-ROM drive motor M1, when M2 stops " being meant in this sheet transporting apparatus X1-4 by different power-transfer clutch etc. cut off CD-ROM drive motor M1, M2 and this transport roller to 18 and this aligning roller to 19 binding make this transport roller to 18 and this aligning roller to 19 states that can freely rotate.But, for carry out image when form handling this transport roller to 18 and aligning roller be not passed on this operation knob 28 to this rotation of transporting downstream direction 19, this free- wheel clutch 22,23 is constituted as the rotation of only transmitting to a direction, and this rotation can not be passed to this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 and goes up and make this belt wheel 24,25 idle running when having made in the carriage direction updrift side that makes this belt wheel 24,25 to this thin slice (being clockwise direction in Fig. 5) contrarotation.
Promptly, in sheet transporting apparatus X1-4, when the driving by this CD-ROM drive motor M1 made this upstream side drive roller shaft 18a1 rotation and the driving by this CD-ROM drive motor M2 that this downstream drive roller shaft 19a1 is rotated to transport thin slice, this belt wheel 24,25 was that benchmark dallies owing to this free- wheel clutch 22,23 with this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1.Thus, stoped the rotation of this operation knob 28, and the load that can alleviate CD-ROM drive motor M1, M2.
On the other hand, when making this operation knob 28 of being installed on the axle identical under the state that has stopped at CD-ROM drive motor M1, M2 as mentioned above to the transporting downstream direction and rotated of this thin slice with this upstream side drive roller shaft 18a1 or this downstream drive roller shaft 19a1, this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 are owing to be erected on this belt wheel 24,25 this and take turns and be with 26 and therefore rotation simultaneously can remove the jam that takes place in this sheet transporting apparatus X1.At this moment, impeller diameter ratio between this belt wheel 24 and this belt wheel 25 is set to following impeller diameter ratio: the big circumferential velocity of circumferential velocity V2 when the circumferential velocity V1 in the time of can obtaining this and transport roller and rotate owing to this M/C unit 28-1 18 rotates owing to this M/C unit 28-1 19 than this aligning roller, therefore can obtain as in effect and the effect that forms deflection on this log sheet P illustrated in fig. 5.
In addition, in this sheet transporting apparatus X1-4, can be by making this transport that roller makes greatly 19 roller diameter than this aligning roller 18 roller diameter since this M/C unit 28-1 rotate this transport roller to 18 circumferential velocity than because this aligning roller that this M/C unit 28-1 rotates is big to 19 circumferential velocity.In this case, also can obtain as effect and effect in formation deflection on this log sheet P illustrated in fig. 5.
[the 5th embodiment]
Then, the (a) and (b) according to Fig. 7 illustrate sheet transporting apparatus X1-5.Here, (a) of Fig. 7 is the concise and to the point planar view that has omitted the sheet transporting apparatus X1-5 of driven voller 18b and 19b, and (b) of Fig. 7 is the concise and to the point lateral plan that has omitted the operation knob 28 among (a) of Fig. 7.For the parts mark identical identical label and omission explanation with this sheet transporting apparatus X1-4.
In this sheet transporting apparatus X1-5, M/C unit 28-2 mainly comprises gear 29 (example of upstream side turning unit), idle pulley 31, gear 30 (example of downstream turning unit), this operation knob 28 and transports the free-wheel clutch 22 of the rotation of downstream direction to what this upstream side drive roller shaft 18a1 only transmitted this gear 29 to this.And the gear between this gear 29 and this gear 30 is than the gear ratio that is set to the big circumferential velocity ratio of circumferential velocity can obtain this and transport roller the circumferential velocity in 18 whens rotation is rotated 19 than this aligning roller the time.Because such gear is than being ratio between the diameter of gear of the diameter of gear of this upstream side drive roller shaft 18a1 side and this downstream drive roller shaft 19a1 side, so the user can wait and changes the gear ratio by being replaced by suitable gear.
Below, explain the formation of the sheet transporting apparatus X1-5 of present embodiment with this M/C unit 28-2.
In this sheet transporting apparatus X1-5, carrying out common thin slice when transporting (when non-jam is handled), be installed in sliding freely on the upstream side drive roller shaft 18a1 that forms as one with driven roller 18a operation knob 28 all the time by this elastic body 33 to vertical with side plate 27 and away from the direction application of force of side plate 27, the gear 29 (example of this upstream side turning unit) that forms as one with operation knob 28 is in not and idle pulley 31 ingear states (representing with the solid line in Fig. 7 (a)).
In such formation, when carrying out common thin slice when transporting, the driving by this CD-ROM drive motor M1 makes this upstream side drive roller shaft 18a1 rotation, and makes this downstream drive roller shaft 19a1 rotation by the driving of this CD-ROM drive motor M2.But, even under the state that this upstream side drive roller shaft 18a1 and this downstream drive roller shaft 19a1 have been rotated, carrying out common thin slice when transporting, the gear 29 that forms as one with operation knob 28 also is in not and idle pulley 31 ingear states as mentioned above, therefore even the rotation owing to this upstream side drive roller shaft 18a1 has been rotated this operation knob 28, this rotation can not be passed on the downstream drive roller shaft 19a1 of fitting operation knob 28 not yet.
Therefore, do not need as the sheet transporting apparatus X1-4 in the 4th embodiment, between this downstream drive roller shaft 19a1 and belt wheel 25, free-wheel clutch 23 to be set, thereby reduced cost, and can alleviate the load of CD-ROM drive motor M1.
On the other hand, when carrying out the jam processing, if be pressed into operation knob 28 in this CD-ROM drive motor M1, direction to the side plate shown in the arrow 27 when M2 stops, then the application of force that the gear 29 that forms as one with operation knob 28 can these elastic bodys 33 of opposing and to the direction of side plate 27 move and with idle pulley 31 engagements (in Fig. 7, dotting).When having rotated this operation knob 28, this gear 29 rotates to same direction to this downstream direction (being anticlockwise direction in Fig. 7) under this state.So this idle pulley 31 is to this carriage direction updrift side (being clockwise direction in Fig. 7) rotation and the rotation of transmitting these gears 29 to this gear 30.
Thus, by being pressed into this operation knob 28 and under this state, transporting the downstream direction and rotate this operation knob 28 to the direction of side plate 27 under the state that has stopped at this CD-ROM drive motor M1, M2, can make this gear 29 and this gear 30 transport the downstream direction rotation to this to this.At this moment, because the gear between this gear 29 and this gear 30 is than the gear ratio that is set to circumferential velocity can obtain this and transport roller to 18 rotations time circumferential velocity ratio that the circumferential velocity during to 19 rotations is big than this aligning roller, so can obtain the effect and the effect of formation deflection on this log sheet P as shown in Figure 5.
On the contrary, when with this operation knob 28 under the state that the direction of side plate 27 has been pressed into when the direction opposite with this carriage direction rotated this operation knob 28, as mentioned above this free-wheel clutch 22 not to this upstream side drive roller shaft 18a1 transmit this gear 29 to this rightabout rotation, so this operation knob 28 can idle running.
On the other hand, be pressed in direction under the state of this operation knob 28 to side plate 27, this gear 29 and these idle pulley 30 engagements, therefore when making this operation knob 28 when this opposite sense has rotated, this rotation is passed on the drive roller shaft 19a1 of this downstream.Therefore, when with this operation knob 28 under the state that the direction of side plate 27 has been pressed into when this opposite sense has rotated this operation knob 28, can under the state of the rotation that has stopped this upstream side drive roller shaft 18a1, only make this downstream drive roller shaft 19a1 to this opposite sense rotation.Thus, can this transport roller to 18 and this aligning roller on this log sheet P, produce deflection as shown in Figure 5 between to 19 and form grip, the user can catch this grip and easily remove this thin slice.
In addition, in the sheet transporting apparatus X1-5 of the 5th embodiment, also can by make this transport roller to 18 roller diameter greater than this aligning roller to 19 roller diameter make this transport roller to 18 circumferential velocity greater than this aligning roller to 19 circumferential velocity.Thus, can obtain the effect and the effect of formation deflection on this log sheet P as shown in Figure 5.
[the 6th embodiment]
Then, according to Fig. 8 sheet transporting apparatus X1-6 is described.Here, (a) of Fig. 8 is the concise and to the point planar view of sheet transporting apparatus X1-6 that has omitted this driven voller 18b and 19b and comprised the circumferential component of transfer belt rotation roller 17, and (b) of Fig. 8 is the concise and to the point lateral plan of the sheet transporting apparatus X1-6 among (a) of Fig. 8.For the parts mark identical with sheet transporting apparatus X1-5 identical label and omission explanation with this sheet transporting apparatus X1-4.
In this sheet transporting apparatus X1-6, M/C unit 28-3 mainly comprise gear 39 (example of upstream side turning unit), idle pulley 41, gear part 28a (example of downstream turning unit), active flank 28b, engagement top ends 19a2, operation knob 28 and only upstream side drive roll shaft 18a1 transmit the free-wheel clutch 22 to the rotation of transporting downstream direction of this gear 39.And the gear ratio between this gear part 28a and this gear 39 is set to lower gear ratio: the big circumferential velocity ratio of circumferential velocity the when circumferential velocity in the time of can obtaining transporting roller and rotate owing to this M/C unit 28-3 18 is rotated owing to this M/C unit 28-3 19 than aligning roller.Because this gear is than being ratio between the diameter of gear 28a of the diameter of gear 39 of this upstream side drive roller shaft 18a1 side and downstream drive roller shaft 19a1 side, thus the user can by be replaced by suitable gear 39,28a waits and changes the gear ratio.
Below, explain the formation of the sheet transporting apparatus X1-6 of present embodiment with this M/C unit 28-3.
In this sheet transporting apparatus X1-6, on this upstream side drive roller shaft 18a1, this gear 39 that is in all the time with idle pulley 41 ingear states is installed via this free-wheel clutch 22.On the other hand, operation knob is installed on the drive roller shaft 19a1 of this downstream integratedly releases gear 40, and this operation knob 28 via protuberance 40c described later with this operation knob release gear 40 butts and be mounted.
Whole this operation knob 28 that is marked with oblique line mainly comprises in Fig. 8: have with this operation knob and release the grip part 28c that active flank 28b that gear part 28a, the back side that is arranged on this bearing surface 28a1 on this gear part 28a and a plurality of claw type of the bearing surface 28a1 of gear 40 butts become the garden ring-type and user can grasping.In this such operation knob 28, this gear part 28a and this active flank 28b are provided with the hole that penetrates of not shown spline-like, this operation knob 28 penetrates the hole by these and is installed on the drive roller shaft 19a1 of this downstream, and this operation knob 28 can be free to slide in the axial direction and can't rotate relatively.
And, on the side plate 27 that forms as one with not shown pedestal, the protecting cover 38 that can hold this operation knob 28 in inside is installed, between this protecting cover 38 and this gear part 28a, the elastic bodys such as spring 33 with elastic force are installed, described elastic force to the direction of this side plate 27 to this gear part 28a application of force.When carrying out image common thin slice transports when form handling etc., this gear part 28a is by the direction application of force of this elastic body 33 to this side plate 27.Therefore, release gear 40 also by this gear part 28a pushing and by the direction application of force with this operation knob of this gear part 28a butt to this side plate 27.
Therefore, carrying out this common thin slice when transporting, this operation knob 28 is because the application of force of this elastic body 33 and being accommodated in like that shown in solid line in this protecting cover 38.This operation knob 28 is constituted as when carrying out that jam described later is handled outstanding to device the place ahead direction (below among Fig. 8 being) from this protecting cover 38, and the back will illustrate this formation.
And, in this sheet transporting apparatus X1-6, be formed with this active flank 28b that is arranged on this operation knob 28 on the engagement top ends 19a2 of a plurality of pawls of pawl ingear garden ring-type be fixed on the top ends of this downstream drive roller shaft 19a1 and relative with this active flank 28b.Carrying out jam described later when handling, this operation knob 28 from this protecting cover 38 long and two-short dash line as shown like that when device the place ahead direction is outstanding, this active flank 28b engagement of this engagement top ends 19a2 and this operation knob 28, this operation knob 28 combines with this downstream drive roller shaft 19a1, and the rotation of this operation knob 28 is passed on the drive roller shaft 19a1 of this downstream thus.
On the other hand, be provided with the formation that is used to make this transfer belt rotation roller 17 and these photosensitive drums 10 contact separations in the downstream of this downstream drive roller shaft 19a1.As shown in Figure 8, such formation comprise the operation knob push-off pin 35 that forms as one with the cam 34 of transfer belt rotation roller 17a butt, with this cam 34, gear 36 and with these gear 36 ingear idle pulleys 37.
This operation knob release gear 40 mainly comprise gear part 40a, this downstream drive roller shaft 19a1 on the periphery can freely penetrate into the relative rotation wherein penetrate hole 40b, this penetrate hole 40b around the protuberance 40c that forms and penetrate into circular-arc jut and penetrate circular-arc jut 40d among the 27a4 of hole, it is the center that described jut penetrates that hole 27a4 is formed on this side plate 27 and penetrates hole 40b with this.This protuberance 40c is formed on this operation knob and releases on positive and negative two faces of gear 40, the end face of the protuberance 40c of a side surface part 40e side and this side plate 27 butts, the end face of another protuberance 40c all the time with the side butt of the gear part 28a of this operation knob 28.In addition, on the end face of this jut 40d, be formed with the rake 40d1 of taper.Therefore, this jut 40d and this operation knob release gear 40 forms as one and rotates.
In this sheet transporting apparatus X1-6, because releasing gear 40, operation knob as above constitutes, therefore carrying out jam when handling etc. under the situation, when the interlock of CD-ROM drive motor M1, M2 and this upstream side driven roller 18a and this downstream driven roller 19a has been cut off, along with making this transfer belt rotation roller 17 can obtain following effect with the action of these photosensitive drums 10 contact separations.Promptly, in this sheet transporting apparatus X1-6, when making this operation knob push-off pin 35 make this transfer belt rotation roller 17 to the rotation of the direction of the arrow X of Fig. 8 (b) with action that this photosensitive drums 10 is separated, this gear 36 that is installed on this operation knob push-off pin 35 rotates to same direction, so the rotation of this gear 36 is passed on this operation knob release gear 40 by this idle pulley 37.
Therefore, be fixed on the also rotation together of this jut 40d on this operation knob release gear 40, this rake 40d1 of this jut 40d rotates when this jut with this side plate 27 penetrates the edge part butt of hole 27a4, and this jut 40d and this operation knob of forming as one with it are released gear 40 because the wedge effect of this rake 40d1 and moving to the direction of leaving this side plate 27 (direction of the arrow Y of Fig. 8 (a)) thus.Thus, this operation knob is released gear 40 and is combined with this operation knob 28, and this operation knob 28 comprises this gear part 28a that releases gear 40 butts via this protuberance 40c and this operation knob.
At this moment, shown in Fig. 8 (a), this gear part 28a of this operation knob 28 that has moved as mentioned above and these idle pulley 41 engagements that are in released state before this.Thus, in case manually rotated this operation knob 28, then should the rotation meeting via this gear part 28a, this engagement top ends 19a2 and this downstream drive roller shaft 19a1 and be passed on the driven roller 19a of this downstream, be passed on this upstream side driven roller 18a via this gear part 28a, this idle pulley 41, this gear 39, this free-wheel clutch 22 and this upstream side drive roller shaft 18a1 in addition.Therefore, manually rotate this operation knob 28 by the direction to the arrow A of Fig. 8 (a), this upstream side driven roller 18a and this downstream driven roller 19a rotation are transported this thin slice thereby can transport downstream direction to this.
On the other hand, when make this operation knob push-off pin 35 to the opposite spin opposite with the direction of this arrow X the time, be installed in this gear 36 on this operation knob push-off pin 35 to the rotation of this opposite sense, so being delivered to this operation knob to this rightabout rotation by this idle pulley 37 and releasing gear 40 of this gear 36.Therefore, moved in the opposite direction to the side with this arrow Y owing to the wedge effect of this rake 40d1 by this gear part 28a of these elastic body 33 application of forces (with this operation knob 28), the engagement of the engagement of this gear part 28a and this idle pulley 41 and this active flank 28b and this engagement top ends 19a2 is cut off.Therefore, even rotate this operation knob 28, this upstream side driven roller 18a and this downstream driven roller 19a can not rotate yet, and therefore can't transport this thin slice that contacts with this downstream driven roller 19a with this upstream side driven roller 18a.
Here, gear ratio between this gear part 28a and this gear 39 is set to lower gear ratio: the big circumferential velocity ratio of circumferential velocity the when circumferential velocity in the time of can obtaining this and transport roller and rotate owing to this M/C unit 28-3 18 is rotated owing to this M/C unit 28-3 19 than this aligning roller, so can obtain as shown in Figure 5 can be in the effect and the effect of the flexed portion of the spatial portion formation log sheet P that transports the path.
On the other hand, in this sheet transporting apparatus X1-6, when carrying out image common thin slice transports when form handling etc., this CD-ROM drive motor M1 drives and makes this upstream side drive roller shaft 18a1 rotation, and this CD-ROM drive motor M2 drives and make this downstream drive roller shaft 19a1 rotation.At this moment, because this operation knob push-off pin 35 is positioned at the solid line position of Fig. 8 that this transfer belt rotation roller 17 contacts with this photosensitive drums 10 via this transfer belt 16 (b), therefore this jut 40d is positioned at the position shown in (a) of Fig. 8, this operation knob 28 of releasing gear 40 butts with this operation knob is positioned at the solid line position shown in (a) of Fig. 8 owing to the application of force of this elastic body 33, so this operation knob 28 has been cut off with being connected of this downstream drive roller shaft 19a1 and dallies.In addition, this gear part 28a does not mesh with this idle pulley 41, so these gear 39 idle running.Therefore, can alleviate the load of CD-ROM drive motor M1, M2.
Simultaneously, the rotation of this operation knob 28 also is passed on this idle pulley 41, and the rotation of this idle pulley 41 is passed on this gear 39, and this gear 39 transports downstream direction (being anticlockwise direction in Fig. 8) rotation to this of this gear 39.Therefore, in this downstream direction that makes this operation knob 28 to this operation knob 28 (in Fig. 8 for anticlockwise direction) when having rotated, this transport roller to 18 and this aligning roller transport downstream direction (in Fig. 8, being anticlockwise direction) rotation to its this to 19.
On the other hand, when under the state that this operation knob 28 and this downstream drive roller shaft 19a1 and this gear 39 combine, making this operation knob 28 (i.e. this carriage direction updrift side of this operation knob 28) when having rotated round about, though should rotation can be passed on this downstream drive roller shaft 19a1 and this gear 39, can not be passed on this upstream side drive roller shaft 18a1 owing to the function of this free-wheel clutch 22.Therefore, make these operation knob 28 contrarotations and only make this downstream drive roller shaft 19a1, also can transport roller thus and make this thin slice generation deflection and remove this thin slice between with this aligning roller 19 to 18 at this to the rotation of its upstream side direction.
In addition, in this sheet transporting apparatus X1-6, bigger to 19 roller diameter than this aligning roller to 18 roller diameter by making this transport roller, it is bigger to 19 circumferential velocity than this aligning roller that rotates owing to this M/C unit 28-3 to 18 circumferential velocity to make this that rotate owing to this M/C unit 28-3 transport roller.Thus, can obtain as shown in Figure 5 the effect and the effect that can form the flexed portion of this log sheet P at the spatial portion that transports the path.

Claims (9)

1. sheet transporting apparatus, make the upstream side of the carriage direction upstream side that is arranged on thin slice transport roller and the downstream that is arranged on the carriage direction downstream of described thin slice is transported roller and rotated and transport described thin slice by CD-ROM drive motor, wherein, described sheet transporting apparatus comprises:
The M/C unit, described M/C unit is installed in described upstream side and transports on the identical axle of the roll shaft of roller or roll shaft that roller is transported in described downstream, transports at least one rotation in the roll shaft by making the rotation of described M/C unit make described upstream side transport roll shaft and described downstream under the state that has stopped in described CD-ROM drive motor;
Slide mechanism, described slide mechanism make described M/C unit described upstream side transport roll shaft or described downstream transport roll shaft axially on slide.
2. sheet transporting apparatus as claimed in claim 1, wherein,
Whether described slide mechanism is to transmitting switching to the rotation of a direction at least of described M/C unit to the roll shaft that described M/C unit is not installed.
3. sheet transporting apparatus as claimed in claim 1 or 2, wherein,
Comprise the contact separation unit, described contact separation unit make the image carrier that forms output image with to the transfer printing unit contact of the described output image of described thin slice transfer printing or separate,
When described contact separation unit makes described transfer printing unit separate with described image carrier, described slide mechanism make described M/C unit switch to along the endwisely slipping of axle that described M/C unit is installed can to the roll shaft that described M/C unit is not installed transmit described M/C unit at least to the rotation of a direction.
4. sheet transporting apparatus as claimed in claim 3, wherein, described M/C unit is to transport the slip that roller is transported in roller or described downstream away from described upstream side along the axial described slip that described M/C unit is installed.
5. sheet transporting apparatus as claimed in claim 1, wherein,
Also comprise contrarotation mechanism, described contrarotation mechanism when having made the unit contrarotation of described M/C of this contrarotation mechanism only transports roll shaft to described downstream and transmits described rotation and make described thin slice side shifting upstream,
Free-wheel clutch is between the M/C unit and transport between the roll shaft.
6. sheet transporting apparatus as claimed in claim 1, wherein,
The circumferential velocity that the described upstream side that rotates owing to described M/C unit transports the rotation of roller is set to that to transport the circumferential velocity of rotation of roller than the described downstream that rotates owing to described M/C unit big.
7. sheet transporting apparatus as claimed in claim 6, wherein,
Described M/C unit comprises upstream side turning unit and downstream turning unit, and described upstream side turning unit and described downstream turning unit comprise gear respectively, recently set the poor of described circumferential velocity by the gear of described gear.
8. sheet transporting apparatus as claimed in claim 6, wherein,
The diameter that described upstream side transports roller is set to that to transport the diameter of roller than described downstream big.
9. sheet transporting apparatus as claimed in claim 6, wherein,
Described upstream side transports the path of transporting of roller and described downstream transporting between the roller and is provided with and is used to take out the spatial portion that has produced the thin slice of deflection owing to the difference of described circumferential velocity.
CN2008101718184A 2007-11-30 2008-11-12 Sheet transporting apparatus Expired - Fee Related CN101445192B (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007-310214 2007-11-30
JP2007310214 2007-11-30
JP2007310214A JP4990111B2 (en) 2007-11-30 2007-11-30 Sheet transport device
JP2008002622A JP2009161339A (en) 2008-01-09 2008-01-09 Sheet transporting apparatus
JP2008002622 2008-01-09
JP2008-002622 2008-01-09

Publications (2)

Publication Number Publication Date
CN101445192A CN101445192A (en) 2009-06-03
CN101445192B true CN101445192B (en) 2011-12-14

Family

ID=40741127

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008101718184A Expired - Fee Related CN101445192B (en) 2007-11-30 2008-11-12 Sheet transporting apparatus

Country Status (2)

Country Link
JP (1) JP4990111B2 (en)
CN (1) CN101445192B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5458875B2 (en) 2009-12-25 2014-04-02 沖電気工業株式会社 Automatic transaction equipment
JP7016228B2 (en) * 2017-07-03 2022-02-04 株式会社東芝 Sheet drilling device
JP6590895B2 (en) * 2017-11-20 2019-10-16 キヤノン株式会社 Image forming apparatus and image forming method
JP7353792B2 (en) * 2018-06-27 2023-10-02 キヤノン株式会社 Sheet conveyance device and image reading device
JP7160653B2 (en) * 2018-11-29 2022-10-25 長野日本無線株式会社 printer paper transport mechanism
JP7225751B2 (en) * 2018-12-12 2023-02-21 富士フイルムビジネスイノベーション株式会社 Paper transport device and image forming device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140364A (en) * 1990-01-23 1992-08-18 Sharp Kabushiki Kaisha Sheet transporting apparatus
US5806650A (en) * 1994-11-14 1998-09-15 Cummins-Allison Corp. Currency discriminator having a jam detection and clearing mechanism and method of clearing a jam
US6062557A (en) * 1997-03-04 2000-05-16 Ricoh Company, Ltd. Image forming apparatus having a non-exciting actuate type electromagnetic clutch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57139948U (en) * 1981-02-27 1982-09-01
JPH01103640U (en) * 1987-12-28 1989-07-13
JPH1179467A (en) * 1997-09-17 1999-03-23 Ricoh Co Ltd Clogged paper removal mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140364A (en) * 1990-01-23 1992-08-18 Sharp Kabushiki Kaisha Sheet transporting apparatus
US5806650A (en) * 1994-11-14 1998-09-15 Cummins-Allison Corp. Currency discriminator having a jam detection and clearing mechanism and method of clearing a jam
US6062557A (en) * 1997-03-04 2000-05-16 Ricoh Company, Ltd. Image forming apparatus having a non-exciting actuate type electromagnetic clutch

Also Published As

Publication number Publication date
JP2009132503A (en) 2009-06-18
CN101445192A (en) 2009-06-03
JP4990111B2 (en) 2012-08-01

Similar Documents

Publication Publication Date Title
CN101445192B (en) Sheet transporting apparatus
CN101139052B (en) Sheet conveying apparatus and image forming apparatus
CN101493140B (en) Drive transmission mechanism of sheet transportation apparatus and document transportation apparatus
CN102470999A (en) Sheet feed device and image forming device
US20140078528A1 (en) Sheet conveying device, image reading apparatus and image forming apparatus provided with same
JP5880146B2 (en) Transfer device, image forming device
US8254824B2 (en) Recording medium conveying device and image forming apparatus
US20050179192A1 (en) Recording medium feed device
CN102114994A (en) Feed assembly and image forming apparatus incorporating feed assembly
US20060192331A1 (en) Sheet feeding device and image forming apparatus
JPS62153064A (en) Printer
JP6528688B2 (en) Sheet feeding apparatus and image forming apparatus
US6208831B1 (en) Mounting device for image forming apparatus
JP5661017B2 (en) Sheet moving device, post-processing device, image forming device
US7789386B2 (en) Sheet transporting apparatus
CN105293124B (en) Original document feeder and image processing system
US20100054833A1 (en) Document feeder and image forming apparatus including the same
JPH09258595A (en) Image forming device
JP7552210B2 (en) Image forming device
JP2001253569A (en) Image forming device
JP6184279B2 (en) Driving force switching mechanism and image forming apparatus
JP4114819B2 (en) Transfer material accumulating device and image forming apparatus provided with transfer material accumulating device
US8498556B2 (en) Developing device and image forming apparatus
US5273273A (en) Sheet inverting mechanism having dual drive assemblies
JPS5926328Y2 (en) Automatic separation devices such as copying machines

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111214

Termination date: 20211112