CN1770029A - Toner supply device - Google Patents
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- CN1770029A CN1770029A CN 200510116660 CN200510116660A CN1770029A CN 1770029 A CN1770029 A CN 1770029A CN 200510116660 CN200510116660 CN 200510116660 CN 200510116660 A CN200510116660 A CN 200510116660A CN 1770029 A CN1770029 A CN 1770029A
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Abstract
Aimed is To restrain toner from remaining inside a toner replenishing member and to restrain contamination in a machine tcaused by toner scattering in a device constituted so that the toner may be supplied to a developing unit by the toner replenishing member from a toner storage part provided separately from the developing unit. In the developing device, the toner is restrained from remaining inside a toner supply pipe 25 because the toner supply pipe 25 is arranged so that an angle formed by the center axis of the toner supply pipe 25 with a horizontal line may be equal to or above the angle of repose of the toner. Furthermore, since shutters are respectively provided at the edge of the toner supply pipe 25 and the toner supply port 18a of the developing unit 16, the toner is prevented from being leaked into the device.
Description
Technical field
The present invention relates to a kind of toner supply device, especially relate to a kind of toner supply device that is used for providing to developer toner from the toner reservoir that is arranged with the developer branch.
Background technology
In the image processing system of electrofax mode, around as the photosensitive drums of image-carrier, be provided with charger, exposer, developing apparatus, transfer device, cleaning device etc.And, be provided with fixing device in the transfer materials downstream of photosensitive drums.In this image processing system, at first, make the surface of photosensitive drums charged equally by charger.Afterwards, according to image information, make the photosensitive drums exposure, and form electrostatic latent image on the surface of photosensitive drums by exposer.This electrostatic latent image develops by developing apparatus.Here, if full-color image is when forming device, be provided with four developing cells that store dark green developer, pinkish red developer, yellow developer and black reagent respectively, toner images dark green, pinkish red, yellow and black four looks are developed.Afterwards, the toner image of development is transferred on the transfer materials by transfer device, and, carry out photographic fixing by fixing device, discharge to discharge portion.The residual developer that remains on the photosensitive drums is removed by cleaning device.
In this image forming course, consume the toner that stores in the developing cell along with development, therefore need provide toner.The supply method of the toner that consumes as forming along with image has two kinds of modes substantially.
First mode as TOHKEMY 2004-45960 communique etc. disclosed, in developing cell, fill a certain amount of toner in advance, when toner is used up, change together with developing cell.In this case, because developing cell and toner container make incorporate box, so, do not need only toner to be offered developing cell, can simplify the maintenance of developing cell.
Second mode at the outer setting toner container of developing cell, is carried out the supply of toner from the outside as TOHKEMY 2001-134045 communique and Japanese kokai publication hei 10-198149 communique etc. are disclosed.In recent years, form the increase of device, require the image processing system miniaturization along with the individual uses full-color image.Therefore, for realizing the miniaturization of image processing system, just need make the developing cell miniaturization.So,, can realize the miniaturization of developing cell by toner container being arranged at the outside of developing cell.
As first mode, when developing cell and toner container are made integrated box, because of need not providing toner to developer from the outside, so, need in developing cell, to fill in advance printable about 4000 toner usually.Therefore, be not easy to realize the miniaturization of developing cell.For realizing the miniaturization of developing cell, can be with the printable capacity setting of toner smaller or equal to 4000, but every cost up.And, after toner is used up, must change together with developing cell, bring very big burden to environment.
On the other hand, in the outside that toner container is arranged on developing cell, from the mode of outside supply toner, need be used for providing to developing cell the parts of toner from toner container.For example in TOHKEMY 2001-134045 communique in the disclosed device, be provided with a plurality of toner supplies path that is used for providing toner to each developing cell, and, in the disclosed device of Japanese kokai publication hei 10-198149 communique, be provided with a plurality of toner supply pipes that are used for to each developing cell complementary colors adjustment.And, by these toner supply paths or toner supply pipe, will be provided to developing cell from the toner of toner container.
But, in one type of prior art syringe, exist the technological deficiency that toner remains in toner supply path or toner supply pipe inside.Particularly in Japanese kokai publication hei 10-198149 communique, there is such technological deficiency in the disclosed device: because the toner supply pipe is with respect to the developing cell forward and back, so, the toner supply pipe is when developing cell leaves, the toner that remains in toner supply pipe inside disperses in the auto levelizer, causes the device internal contamination.
And, in one type of prior art syringe,, toner in the toner reservoir offers developer by being fallen naturally, so, when the toner that provides to developer in the toner reservoir, be not easy the quantity delivered of toner is accurately controlled.
Summary of the invention
The objective of the invention is to, providing the device of toner to developer from the toner reservoir that is arranged with the developer branch by the toner refill component, suppress toner and remain in toner supply part inside, thereby suppress the device internal contamination of dispersing and causing of toner.
Another object of the present invention is, by simple structure, can control the tone dosage that provides to developer accurately.
According to the toner supply device of first aspect present invention, be a kind of device that is used for providing the toner that is stored in the toner reservoir to the developing apparatus of image processing system, comprising: delivery pipe is used for carrying toner from the toner reservoir; And at least one supply pipe, be used for providing toner from delivery pipe to the developing apparatus that is positioned at the below.Delivery pipe is connected with the toner reservoir.Supply pipe is connected with delivery pipe on top, and the lower end can enter the inside of developing apparatus.And, be provided with transfer unit rotatable, that toner is carried downwards in the inside of supply pipe.And, supply pipe is configured to be angle of repose more than or equal to toner with respect to its central shaft of horizontal line.
In this device, the toner reservoir is configured in the position of separating with developing apparatus.And toner is transported to supply pipe by delivery pipe, offers the developing apparatus of below from this supply pipe.
Here, downwards developing apparatus provides toner from the top through supply pipe inside, still,, supply pipe is more than or equal to the toner angle of repose because being configured to its central shaft of relative horizontal line, so, can suppress toner and remain in supply pipe inside.Therefore, with supply pipe when developing apparatus is extracted out, also can prevent the residual device internal contamination that toner caused.
According to the toner supply device of second aspect present invention, in the device of first aspect, image processing system is included in the image-carrier that the surface can form electrostatic latent image.And developing apparatus comprises a plurality of developers and rotating frame.A plurality of developers are provided with accordingly with different development look respectively.Rotating frame is arranged in a circumferential direction and is kept a plurality of developers, and each that makes a plurality of developers by rotation is respectively in the face of image-carrier.And, with each developer supply pipe is set accordingly.
This image processing system comprises so-called rotary developing device, and this rotary developing device is arranged in a circumferential direction and kept a plurality of developers, by rotation, makes a plurality of developers respectively in the face of image-carrier and develop.Therefore, be configured in the outside of developing apparatus, can reduce the diameter of rotating frame, thereby realize the miniaturization of image processing system integral body by making the toner reservoir.
According to the toner supply device of third aspect present invention, in the device of first aspect, supply pipe comprises the shutter mechanism that is used to forbid or allow to provide to developing apparatus toner.
In this device, when developing apparatus is supplied with toner, open the shutter mechanism that is arranged at supply pipe from supply pipe; Stopping when developing apparatus is supplied with toner, closing shutter mechanism.Therefore, if, also can prevent to leak toner from supply pipe at the inner residual toner that has of supply pipe.
According to the toner supply device of fourth aspect present invention, in the device according to third aspect present invention, supply pipe comprises inner core and urceolus, wherein, comprises interior side opening in the top ends of this inner core; This urceolus is arranged on the peripheral part of inner core, and relative rotation with inner core comprises outer openings in the top ends side freely.And shutter mechanism is made of inner core and urceolus.
According to the toner supply device of fifth aspect present invention, in device, also comprise drive unit and shutter driving mechanism according to fourth aspect present invention.Drive unit can make the top ends of supply pipe enter developing apparatus inside, and it is isolated from developing apparatus.Enter developing apparatus when inner in the top ends of supply pipe, the shutter drive unit overlaps at least a portion of the outer openings of the interior side opening of inner core and urceolus; When top ends was positioned at developing apparatus outside, side opening and outer openings were positioned at mistake and off normal and put in making.
In this developing cell, when toner is provided, the top ends of supply pipe is entered in the developing apparatus by drive unit, at least a portion of the interior side opening of inner core and the outer openings of urceolus overlaps.Thereby, the toner of supply pipe inside is provided to developing apparatus.And after the supply of end toner, the top ends and the developing apparatus that will enter the supply pipe in the developing apparatus by drive unit are isolated.Here, by the shutter driving mechanism, when the top ends of supply pipe is positioned at developing apparatus outside, in making side opening and outer openings be positioned at mistake from the position, therefore, the toner of supply pipe inside can not drain to the outside, thereby can prevent to leak toner from supply pipe.
According to the toner supply device of sixth aspect present invention, in the device according to fifth aspect present invention, the outer openings of urceolus is greater than the interior side opening of inner cylinder portion.
Here, when the relative inner core of urceolus rotates relatively,, also can provide toner to developing apparatus even when producing the error of some anglecs of rotation.In addition, if the gap between jam-packed inner core and urceolus for example can prevent that then toner from entering the gap of inner core and urceolus, thereby can suppress also when changing toner that toner disperses and in the polluting device.
According to the toner supply device of seventh aspect present invention, in the device according to fifth aspect present invention, the shutter driving mechanism makes the urceolus rotation along with moving of the supply pipe that is driven by drive unit.
Toner supply device according to eighth aspect present invention, in device according to seventh aspect present invention, the shutter driving mechanism comprises guide portion and spiral helicine guiding groove, wherein, this guide portion is arranged at the outer peripheral face of urceolus, this spiral helicine guiding groove is disposed at the more peripheral part of urceolus, is used to insert guide portion.
Here, along the spiral fashion guiding groove that the more peripheral part that is disposed at urceolus, guide portion are inserted, move the guide portion of the outer peripheral face that is arranged at urceolus, urceolus is along with the mobile of guide portion rotates.
According to the toner supply device of ninth aspect present invention, in device, on developer, form the opening that toner is supplied with usefulness according to second aspect present invention, supply with at the toner of developer and shutter is set with opening part.
In this device, supply with at the toner of developer and shutter to be set with opening part, when carrying out the supply of toner, open this shutter, in developing apparatus, provide toner by supply pipe; When stopping the supply of toner, close this shutter.Therefore, can prevent that toner from leaking in the device with opening part from the toner supply of developer.
According to the image processing system of tenth aspect present invention, comprise image forming part, paper sheet delivery portion and toner supply unit.Image forming part is to form toner image and the toner image that forms is transferred to part on the paper.Paper sheet delivery portion is used for the part of paper sheet delivery to image forming part.The toner supply unit comprises: the toner supply part is used for toner is offered image forming part; The toner reservoir is at the internal reservoir toner; And the toner delivery section, inside comprises the toner transfer unit, and the toner of toner reservoir is transported to the toner supply part.The toner delivery pipe has the part lower than toner conveyance direction downstream side at toner throughput direction upstream side.
When in this image processing system, carrying out the toner supply, carry the toner of toner reservoir to the toner supply part by the toner delivery section.Here, the toner of toner reservoir is carried to the toner supply part through the part lower than toner conveyance direction downstream side of the toner throughput direction upstream side of toner delivery section.In this case, the toner conveyance direction downstream side is than toner throughput direction upstream side height, so toner is not easy freely to fall, the carrying capacity by the toner transfer unit is transferred.
Here, because controlled freely falling of toner, so, compared with prior art, can control the toner transfer unit is supplied with amount from toner to the toner supply part exactly.
The image processing system of the tenth one side according to the present invention, in image processing system, the connecting portion of toner delivery section and toner reservoir is configured in than on the low position of the connecting portion of toner delivery section and toner supply part according to tenth aspect present invention.
The image processing system of the 12 aspect according to the present invention, in the image processing system according to tenth aspect present invention, the toner quantity delivered that the toner operational throughput of toner delivery section is less than the toner supply part is few.
Here, the amount of the toner that the toner supply part provides to image forming part is more than the amount of the toner of carrying to the toner supply part by the toner delivery section, so the toner of carrying by the toner delivery section is not easy to accumulate in the toner supply part.Therefore, can control the toner quantity delivered more accurately.
The image processing system of the 13 aspect according to the present invention in the image processing system aspect the 12 according to the present invention, lacks than the toner operational throughput of toner delivery section to the toner quantity delivered of toner delivery section from the toner reservoir.
Here, the tone dosage that is transported to the toner supply part by the toner delivery section is than many to the tone dosage that the toner delivery section provides from the toner reservoir, so the toner that provides from the toner reservoir is not easy to accumulate in the toner delivery section.Therefore, can control the toner operational throughput more accurately.
The image processing system of the 14 aspect according to the present invention, in image processing system, the connecting portion of toner supply part and toner delivery section is configured in than near the high position of the upstream side the connecting portion of toner supply part and toner delivery section according to tenth aspect present invention.
So, can realize the present invention with simple formation.
In aforesaid the present invention, to be transported to the device that the toner developing apparatus downwards on supply pipe top provides from the outside, because being configured to the relative horizontal line of its central shaft, supply pipe is angle of repose more than or equal to toner, so, can suppress the residual of the inner toner of supply pipe, thereby can suppress to remain in the dispersing of toner of supply pipe inside and the device internal contamination that causes.
According to the present invention, can control exactly from the toner reservoir and be provided to tone dosage in the image forming part.
Description of drawings
Fig. 1 is the summary pie graph of color printer according to an embodiment of the invention;
Fig. 2 is the stereoscopic figure of developer;
Fig. 3 is the detail sections structural drawing of toner supply device;
Fig. 4 is the stereographic map of toner supply pipe;
Fig. 5 is the overall appearance figure midway that takes out the toner reservoir; And
Fig. 6 is the structural drawing on toner supply pipe top.
Embodiment
Fig. 1 illustrates the color printer 1 that forms device according to an embodiment of the invention as coloured image.And this Fig. 1 is the synoptic diagram that is used to represent the configuration of each inscape, omits the detailed structure that each one is shown.
Whole formation
This color printer 1 be connected with not shown computing machine etc., and can be according to the image information of coming with the device of color print image on paper from transmission such as computing machines.And this color printer 1 right side in Fig. 1 is operator's a fore side, below, the right side of device that will be in Fig. 1 is as by operator's side, and the left side is as the inboard.
Photosensitive drums
Rotary developing device
Rotary developing device 3 be the electrostatic latent image that will be on photosensitive drums 2 forms by the device that toner of all kinds develops, be arranged to photosensitive drums 2 in abutting connection with, be centered close to the position with the roughly the same height in center of photosensitive drums 2.This rotary developing device 3 comprises rotating frame 15 and four developers 16, and the corresponding setting of toner of this developer 16 and four looks is kept by rotating frame 15.Rotating frame 15 be with rotation drum freely around the axle of the rotating shaft parallel of photosensitive drums 2, by comprising the driving mechanism rotation of not shown motor and gear.And rotating frame 15 comprises four intervals that are divided into four parts by the interval box from the radial extension in center of turning axle in a circumferential direction.Each interval disposes and developer 16 yellow, dark green, pinkish red and that four kinds of toner looks of black are corresponding.
Each developer 16 is respectively roughly the same structure, is provided with the agitating roller etc. that stirs usefulness with photosensitive drums 2 opposed developer rolls and toner.Fig. 2 illustrates in four developers 16.Here, in the present invention, toner reservoir (aftermentioned) was arranged with developer in 16 minutes, and therefore, the toner storage area of the developer of present embodiment self is little, comprises that with developer inside the device of toner reservoir is compared, and developer 16 is miniaturized self.And in order to provide toner from the toner reservoir to the inside of developer 16, the outer circumferential side at the box 17 of developer 16 is provided with toner supply unit 18 as shown in Figure 2.This toner supply unit 18 is a kind of at the part of box 17 formation opening and at the fixing parts that form the elastomeric element of supply port 18a of this opening part.
Laser cell
The toner reservoir
Toner supply device
Driving mechanism 27 be included in tooth bar 32 that the peripheral part of toner supply pipe 25 axially is provided with and with the pinion wheel 33 of these tooth bar 32 engagements.Pinion wheel 33 is maintained on the framework of device, can rotate freely.As shown in Figure 4, drive by motor 33a, worm screw, worm gear and reducing gear train.And, by 27, four toner supply pipes 25 of this driving mechanism can obtain the top dodge position (position shown in the solid line of Fig. 1) and below top ends enter the supply position (position shown in the double dot dash line of Fig. 1) of developer 16 inside.Here, as mentioned above, the laser beam of laser cell 4 leans on operator's side top by the device of rotary developing device 3.Promptly, the motion track of laser optical path and toner supply pipe 25 intersects, and when toner supply pipe 25 is positioned at when dodging the position, laser optical path can not blocked by toner supply pipe 25, but when toner supply pipe 25 was positioned at the supply position, laser optical path was blocked by this toner supply pipe 25.
In addition, toner supply pipe 25 comprises the shutter mechanism of only opening when this toner supply pipe 25 is positioned at the supply position.Specifically, as Fig. 3～shown in Figure 6, toner supply pipe 25 comprises inner cylinder portion 251 and urceolus portion 252 duplexs, and top ends of each one 251,252 at these forms opening 251a, opening 252a in the part of circumferencial direction.Here, the opening 252a of urceolus portion 252 is bigger than the opening angle of the opening 251a of inner cylinder portion 251.And as shown in Figure 4, urceolus portion 252 forms projection 252b at outer peripheral face, and this projection 252b engages with the rotating cam 28 of more periphery that is disposed at urceolus portion 252 and formation spiral fashion guide portion 28a.And, in Fig. 4,, be shown specifically rotating cam 28 for ease of understanding.And, when toner supply pipe 25 be in the top dodge the position time, the opening 251a of inner cylinder portion 251 and the opening 252a of urceolus portion 252 do not overlap (Fig. 6 (a): shutter cuts out), toner can not escape to the outside.On the other hand, when toner supply pipe 25 is mobile downwards, urceolus portion 252 is by rotating with the engaging of spiral fashion guide portion 28a of projection 252b and rotating cam 28, the top ends of toner supply pipe 25 enters the inside of developer 16 and is positioned at when supplying with the position, the opening 251a of inner cylinder portion 251 and the opening 252a of urceolus portion 252 overlap (Fig. 6 (b) and (c): shutter is opened), and the toner of inside is provided to the inside of developer 16 from opening 251a, opening 252a.
Intermediate transfer belt
Configuration is separately carried out further bright about these component parts.Driven roller 35 be positioned at photosensitive drums 2 and rotary developing device 3 contact site roughly under, it is centered close to the position of comparing more the below bottom with rotary developing device 3.And, drive by the drive division that comprises not shown motor and gear.Driven voller 36 is disposed at the bottom of leaning on operator's side near the device of toner reservoir 5, and its height and position is a same position with photosensitive drums 2 roughly.Separating these driven voller 36 application of forces of side direction by spring 38 with driven roller 35, thereby, the tension force of regulation applied to intermediate transfer belt 7.And, primary transfer roller 37a, 37b mutually near and be arranged at the below of photosensitive drums 2, thereby, the specialized range of middle rotating band 7 and photosensitive drums 2 butts.
And, below the device inboard of driven roller 35, rotary developing device 3, be provided for removing the band cleaning device 40 of intermediate transfer belt 7.This band cleaning device 40 is arranged at the position relative with driven roller 35, comprising: hairbrush 41, with the surperficial sliding contact of intermediate transfer belt 7; Clearer 42 is configured to contact with hairbrush 41 above hairbrush 41; Scraper plate 43 is configured to the top and contacts with the surface of clearer 42; And reclaiming spiral pipe 44, alignment arrangements is in the below of scraper plate 43.
In this cleaning device 40, wipe the attachment of intermediate transfer belt 7 off by hairbrush 41, reclaim the attachment that hairbrush 41 scrape by clearer 42.And, scrape the attachment that is recovered to clearer 42 sides by scraper plate 43 from the surface of clearer 42, be recovered to not shown recoverer by reclaiming spiral pipe 44.
Secondary transfer roller
Fixing device
Fixing device 9 is to be used for below rotary developing device 3, and being configured in the device inboard with being needed on the device of the hot photographic fixing of toner (fusion photographic fixing) on the paper.This fixing device 9 comprise internal heater warm-up mill 9a and with the warm-up mill 9b of warm-up mill 9a crimping, clamping and conveyance of sheets between two rollers.
Discharge portion
In this printer 1, the upper face of device promptly, above laser cell 4, toner supply device 6 and toner reservoir 5, is formed for placing the discharge portion 50 of the paper that has formed image.This discharge portion 50 comprises curved face part and planar portions, wherein, laser cell 4 one sides of this curved face part (device is inboard) are minimum, along with extending to toner reservoir 5 one sides (device is by operator's side) and uprising gradually, this planar portions is connected with this curved face part, and is positioned at the top of toner reservoir 5.
Sheet feed section
Bottom at device is provided with sheet feed section 51, is used to the paper that stores paper and send storage.This sheet feed section 51 comprises: paper feeding cassette 52, and it comprises the placing plate of placing paper; Before send roller 53, be used to take out the paper on the placing plate; And prevent from heavily to send mechanism 54, by being used for sending the roller of paper one by one to constituting to transport path.And paper feeding cassette 52 can going out by operator's layback to device.
Delivery section
The delivery section of conveyance of sheets is set between sheet feed section 51 and discharge portion 50.Delivery section comprises: first transport path 55, from sheet feed section 51 to secondary transfer roller 8; Second transport path 56 is from secondary transfer roller 8 to fixing device 9; And the 3rd transport path 57, from fixing device 9 to discharge portion 50.And, be provided with pawl 58 along separate routes in the outlet of fixing device 9, at this along separate routes between the stage casing of pawl 58 and first transport path 55, be provided for returning transport path 59 with what paper turned back to first transport path 55.
The 3rd transport path 57 comprises vertical transport path, and this vertical transport path is formed at the conveyance direction downstream side of pawl 58 along separate routes.That is, behind the paper process shunt pawl 58, carry, discharge to discharge portion 50 to the approximate vertical top.The 3rd transport path 57 is same as described above, by guiding and the guide plate of conveyance of sheets and roller to constituting.
Returning transport path 59 is such transport paths: in the position that shunt pawl 58 is set, divide commentaries on classics downwards from the 3rd transport path 57, through fixing device 9, second transport path 56, secondary transfer roller 8 and contraposition roller to 60 below, again towards the top, and the contraposition roller that meets at first transport path 55 is to 60 throughput direction upstream side.Promptly, this returns transport path 59 is such transport paths: be arranged between the above-below direction of the straight line path 55b of first transport path 55 and second transport path 56 and paper feeding cassette 52, be used for to turn back to through the paper after the fixing device 9 the contraposition roller to 60 more upstream side, wherein, this contraposition roller is configured in the upstream side of secondary transfer roller 8.It is same as described above that this returns transport path 59, also by guiding and the guide plate of conveyance of sheets and roller to constituting, in the position of regulation the sensor that note detection is used is set.
Sheet feed stacker
Below toner reservoir 5, and above paper feeding cassette 52, sheet feed stacker 65 is configured to the sidewall by operator's side of constituent apparatus.The lower end of this sheet feed stacker 65 is retained and can rotates (switch freely) freely near the crooked route 55a of first transport path 55, is the center with this pivot point 65a, can the upper end is oblique by operator's inclination to device.Like this, be under the open mode, paper is placed on the sheet feed stacker 65 in sheet feed stacker 65, then can be with the crooked route 55a of this paper sheet delivery to first transport path 55.
Image forms action
Below, form action about image and carry out simple declaration.At first, power supply received color printer after, various parameters are carried out initialization, carry out the initial setting of the temperature setting etc. of photographic fixing portion.And, from being connected in the input image datas such as computing machine of this printer, after beginning is printed in indication, carry out following image and form action.And, form in the action at this image, make toner supply pipe 25 move to the position of dodging of top.Therefore, laser optical path can not blocked by toner supply pipe 25.
At first, make photosensitive drums 2 chargings by charging roller 10.Afterwards, the scan exposure by laser cell 4 carries out corresponding to view data for this photosensitive drums 2 forms electrostatic latent image on photosensitive drums 2.Then, rotation rotary developing device 3, the developer 16 that makes corresponding color is in the face of photosensitive drums 2.Under this state,, the electrostatic latent image of photosensitive drums 2 is developed by the toner of corresponding color.Image after the development is transferred to intermediate transfer belt 7.By repeating above action successively, on intermediate transfer belt 7, form full-color image for every kind of color.Then, remove toner residual on photosensitive drums 2 etc., discard in not shown calcellation toner container by drum cleaning device 11.
On the other hand, in sheet feed section 51, open, be transported to the contraposition roller to 60 by first transport path 55 by preceding sending roller 53 and preventing from heavily to send mechanism 54 to take out a piece of paper from paper feeding cassette 52.Afterwards, make sequential consistent with the formation image on the intermediate transfer belt 7 and from the contraposition roller to 60 conveyance of sheets, and be directed to secondary transfer roller 8.Secondary transfer roller 8 and intermediate transfer belt 7 butts by putting on the transfer bias on the secondary transfer roller 8, are transferred to the full-color image that is formed on the intermediate transfer belt 7 on the paper.By second transport path 56 this paper is directed to fixing device 9, by heating, pressurization by this fixing device 9, with image fixing on paper.And, when single face is printed, be directed to the 3rd transport path 57 by shunt pawl 58, discharge to discharge portion 50.
And, when duplex printing, through the paper after the fixing device 9, in a single day after being transported to the 3rd transport path 57 by shunt pawl 58, behind the paper rear end process shunt pawl 58, to carrying in the other direction, and be directed into and return transport path 59 sides, turn back to first transport path 55 once more by returning transport path 59.The paper that turns back to first transport path 55 stops on to 60 at the contraposition roller for the time being.Then, form the image of rear side on changeing surely with 7 with the action identical in the centre with above-mentioned action after, at the contraposition roller 60 paper of awaiting orders are transported to secondary transfer roller 8 sides according to sequential.Carry out action same as described above then,, paper is directed to the 3rd transport path 57 sides, discharge to discharge portion 50 by shunt pawl 58.
When providing toner to developer 16, make rotary developing device 3 rotation, make to it provides the developer 16 of toner to be positioned at as shown in Figure 1 supply position.At this state, the rotation of rotary developing device 3 is locked.Then, toner supply pipe 25 is moved downwards and be positioned at and supply with the position.That is, when driving motor 33a, by gear train, then pinion wheel 33 rotations, thus the toner supply pipe 25 of stationary rack 32 moves to the below.On the other hand, by the rotation of the disc spring 31 in the delivery pipe 26, toner is transported to the second connecting portion 26b by toner delivery section 26c from the first connecting portion 26a.Here, toner delivery section 26c tilts to the second connecting portion 26b upward from the first connecting portion 26a, so toner is not easy freely to trickle down, and carries by the carrying capacity of disc spring 31.Therefore, the quantity delivered of the toner that provides to developer 16 can accurately be provided.And, by delivery pipe 26 toner being transported to toner supply pipe 25 rear flank, the inside that enters developer 16 as the supply port 18a of toner supply port is passed through on the top of toner supply pipe 25.When this toner supply pipe 25 is mobile downwards, the urceolus portion 252 that constitutes toner supply pipe 25 is with respect to inner cylinder portion 251 rotations, enter the moment of developer 16 inside on the top of toner supply pipe 25, the opening 252a of urceolus portion 252 and the opening 251a of inner cylinder portion 251 overlap.That is, open shutter mechanism.And, the toner of toner supply pipe 25 inside is provided to the inside of developer 16.At this moment, the central shaft of toner supply pipe 25 becomes the angle of repose more than or equal to toner with horizontal angle configurations, and therefore, toner can not remain in the inside of pipe 25.
And, the quantity delivered of the toner that setting provides to delivery pipe 26 from toner reservoir 5 is less than the amount that can be transported to the toner of toner supply pipe 25 by delivery pipe 26, sets by delivery pipe 26 and can be transported to the amount of toner of toner supply pipe 25 less than the amount that can be provided to the toner of developer 16 by toner supply pipe 25.Therefore, in delivery pipe 26, toner supply pipe 25, be not easy to accumulate toner, thus can be owing to accumulating of toner causes the control accuracy of toner quantity delivered to descend.
And when toner supply pipe 25 is positioned at when supplying with the position, toner supply pipe 25 blocks from laser cell 4 to photosensitive drums 2 laser optical path.But, because be not that supply action and the image of carrying out the toner of toner supply pipe 25 simultaneously forms action, so there is not the technological deficiency problem.
After toner was supplied with and finished, the disc spring 31 in the delivery pipe 26 stopped the rotation.On the other hand, the spiral pipe parts 30 that are disposed at toner supply pipe 25 inside continue rotation, in toner supply pipe 25, do not have toner till.Afterwards, if make motor 33a and the despining mutually of above-mentioned direction, then pinion wheel 33 counter-rotatings, therefore, the toner supply pipe 25 of fixing this tooth bar 32 is moved upward.At this moment, urceolus portion 252 and the despining mutually of above-mentioned direction, the position mistake of the opening 251a of inner cylinder portion 251 and the opening 252a of urceolus portion 252 from, opening is closed.Be that shutter is for cutting out.And in the toner supply unit 18 that is arranged at developer 16 sides, after toner supply pipe 25 was extracted out from supply port 18a, supply port 18a also was closed owing to elastic force.Therefore, can prevent toner from toner supply pipe 25, also have developer 16 in device, to disperse.
Claims (14)
1. toner supply device, the toner that is used for being stored in the toner reservoir offers the developing apparatus of image processing system, and it comprises:
Delivery pipe is connected in described toner reservoir, is used to carry the toner that comes from described toner reservoir;
At least one supply pipe, its top is connected with described delivery pipe, and the lower end can enter the inside of described developing apparatus simultaneously, is used for the toner from described delivery pipe is offered the described developing apparatus that is positioned at the below; And
Transfer unit rotatably is arranged in the described supply pipe, carries toner downwards,
Described supply pipe is configured to the relative horizontal line of its central shaft and is the angle of stopping more than or equal to toner.
2. toner supply device according to claim 1, described image processing system are included in the image-carrier that the surface forms electrostatic latent image,
Described developing apparatus comprises:
A plurality of developers are respectively with different development look corresponding settings; And
Rotating frame arrange to keep described a plurality of developers at circumferencial direction, and each that makes described a plurality of developers by rotation is respectively in the face of described image-carrier,
Wherein, corresponding with described each developer and described supply pipe is set.
3. toner supply device according to claim 1, described supply pipe comprises the shutter mechanism that is used to forbid or allow to provide to described developing apparatus toner.
4. toner supply device according to claim 3, described supply pipe comprises inner core and urceolus, wherein, described inner core comprises interior side opening in top ends; Described urceolus is arranged at the peripheral part of described inner core, and relative rotation with described inner core comprises outer openings in the top ends side freely,
Described shutter mechanism is made of described inner core and described urceolus.
5. toner supply device according to claim 4 also comprises:
Drive unit can make the top ends of described supply pipe enter the inside of described developing apparatus, also it is isolated from described developing apparatus; And
The shutter driving mechanism enters described developing apparatus when inner in the top ends of described supply pipe, and at least a portion of the outer openings of the interior side opening of described inner core and described urceolus is overlapped; When described top ends is positioned at described developing apparatus outside, make described in side opening and outer openings be positioned at wrong from the position.
6. toner supply device according to claim 5, the outer openings of described urceolus is greater than the interior side opening of described inner core.
7. toner supply device according to claim 5, described shutter driving mechanism make described urceolus rotation along with moving of the described supply pipe that is driven by described drive unit.
8. toner supply device according to claim 7, described shutter driving mechanism comprises: the guide portion that is arranged at the outer peripheral face of described urceolus; And be disposed at the more peripheral part of described urceolus, the described spiral helicine guiding groove that is used to insert guide portion.
9. toner supply device according to claim 2 forms the opening that toner is supplied with usefulness on described developer,
Toner supply at described developer is provided with shutter with opening part.
10. image processing system comprises:
Image forming part is transferred to the toner image that forms on the paper when forming toner image;
Paper sheet delivery portion arrives described image forming part with paper sheet delivery; And
The toner supply unit provides toner to described image forming part,
Described toner supply unit comprises: the toner supply part is used for providing toner to described image forming part; The toner reservoir is at the internal reservoir toner; And the toner delivery section, comprise the toner transfer unit in inside, the toner of described toner reservoir is transported to described toner supply part,
Described toner delivery section has the part lower than toner conveyance direction downstream side at toner throughput direction upstream side.
11. image processing system according to claim 10, the connecting portion of described toner delivery section and described toner reservoir are disposed at than on the low position of the connecting portion of described toner delivery section and described toner supply part.
12. image processing system according to claim 10, the toner operational throughput of described toner delivery section is lacked than the toner quantity delivered of described toner supply part.
13. image processing system according to claim 12, the toner quantity delivered from described toner reservoir to described toner delivery section is lacked than the toner operational throughput of described toner delivery section.
14. image processing system according to claim 10, the connecting portion of described toner supply part and described toner delivery section are disposed at than near the high position of the upstream side the connecting portion of described toner supply part and described toner delivery section.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004315773A JP2006126570A (en) | 2004-10-29 | 2004-10-29 | Toner supply device |
| JP2004315773 | 2004-10-29 | ||
| JP2005023821 | 2005-01-31 | ||
| JP2005186911 | 2005-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1770029A true CN1770029A (en) | 2006-05-10 |
| CN100456154C CN100456154C (en) | 2009-01-28 |
Family
ID=36721378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101166607A Expired - Fee Related CN100456154C (en) | 2004-10-29 | 2005-10-26 | Toner supply device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006126570A (en) |
| CN (1) | CN100456154C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645619A (en) * | 2012-03-27 | 2014-03-19 | 富士施乐株式会社 | Powder accommodation container and image forming apparatus |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4786517B2 (en) | 2006-12-15 | 2011-10-05 | 株式会社リコー | Toner bottle unit and image forming apparatus |
| JP5742315B2 (en) * | 2011-03-10 | 2015-07-01 | 株式会社リコー | Developing device and image forming apparatus |
| JP5740324B2 (en) * | 2011-04-15 | 2015-06-24 | 京セラドキュメントソリューションズ株式会社 | Developer container and image forming apparatus to which the container is applied |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0478872A (en) * | 1990-07-23 | 1992-03-12 | Fuji Xerox Co Ltd | Image forming device |
| JPH04159569A (en) * | 1990-10-24 | 1992-06-02 | Fuji Xerox Co Ltd | Image forming device |
| US5187524A (en) * | 1991-08-09 | 1993-02-16 | Xerox Corporation | Developer dispensing apparatus with composite toner dispenser spring |
| JP3524312B2 (en) * | 1997-01-14 | 2004-05-10 | 株式会社リコー | Rotary developing device |
| JP3456122B2 (en) * | 1997-09-10 | 2003-10-14 | 株式会社日立製作所 | Recording device |
| JP2001134045A (en) * | 1999-11-01 | 2001-05-18 | Seiko Epson Corp | Rotary multicolor developing unit and multicolor image forming device |
| JP4220798B2 (en) * | 2002-09-20 | 2009-02-04 | 株式会社リコー | Powder container |
-
2004
- 2004-10-29 JP JP2004315773A patent/JP2006126570A/en active Pending
-
2005
- 2005-10-26 CN CNB2005101166607A patent/CN100456154C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645619A (en) * | 2012-03-27 | 2014-03-19 | 富士施乐株式会社 | Powder accommodation container and image forming apparatus |
| US8918033B2 (en) | 2012-03-27 | 2014-12-23 | Fuji Xerox Co., Ltd. | Powder accommodation container, image forming apparatus and manufacturing method of the image forming apparatus |
| US8918034B2 (en) | 2012-03-27 | 2014-12-23 | Fuji Xerox Co., Ltd. | Powder accommodation container, image forming apparatus and manufacturing method of the image forming apparatus |
| US9042791B2 (en) | 2012-03-27 | 2015-05-26 | Fuji Xerox Co., Ltd. | Powder accommodation container, image forming apparatus and manufacturing method of the image forming apparatus |
| CN103645619B (en) * | 2012-03-27 | 2016-02-24 | 富士施乐株式会社 | Powder storage container and image processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100456154C (en) | 2009-01-28 |
| JP2006126570A (en) | 2006-05-18 |
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