CN100465809C - Developing device, treating cartridge with said treating cartridge and image forming device - Google Patents
Developing device, treating cartridge with said treating cartridge and image forming device Download PDFInfo
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- CN100465809C CN100465809C CNB2005101268808A CN200510126880A CN100465809C CN 100465809 C CN100465809 C CN 100465809C CN B2005101268808 A CNB2005101268808 A CN B2005101268808A CN 200510126880 A CN200510126880 A CN 200510126880A CN 100465809 C CN100465809 C CN 100465809C
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Abstract
The invention relates to a developing device used in image formation devices such as a duplicator, a facsimile, a printer, etc., a processing card box using the developing device as well as an image formation device. The developing device is characterized in that the volume of a first transporting transfer auger 55Y is larger than that of a second transporting transfer auger 56Y, and the height of developer in a first developer containing part 53Y which supplies the developer to a development roller 51Y is higher than that of the developer in a second developer containing part 54Y which receives the toner supply from the upper part. In the developing device which is provided with two developer stirring and transporting transfer augers and two developer containing parts, the dirty background caused by the developer which is deficiency in carried charge and the toner scattering can be avoided, and the phenomenon existing in the image that the screw pitch of the conveying parts is uneven can be prevented.
Description
Technical field
The present invention relates to be used for duplicating machine, printer, the developing apparatus of image processing systems such as facsimile recorder uses the cartridge processing (process cartridge) and the image processing system of this developing apparatus.
Background technology
In the past, the bi-component developing apparatus of following structure was known for people: be provided with two and transport spiral, stir as developer and transport parts, described two are transported among the spiral, a certain developer roll that transports the top configuration of spiral as developer mounting body.
As this developing apparatus, for example can enumerating, the spy opens 2004-077554 communique (following brief note is " patent documentation 1 ").With reference to Fig. 1-Fig. 3, this developing apparatus is described.
In developing apparatus 5, be provided with first and transport spiral 55 and second and transport spiral 56, at the first oblique upper configuration developer roll 51 that transports spiral 55.First transports spiral 55 and second transports spiral 56 and roughly is identical shaped, volume and travelling speed also about equally, the developer upwards of movement of unit interval is also about equally.In developing apparatus 5, transport spiral 55 and second first and transport between the spiral 56, be provided with partition wall 59, form the first developer receptacle portion 53 and the second developer receptacle portion 54.
In developing apparatus 5, draw first developer that transports in the first developer receptacle portion 53 of spiral 55 sides by developer roll 51.In order to ensure the stable amount of drawing, the developer height in the first developer receptacle portion 53 need reach to a certain degree, as shown in Figure 1, is preferably, and developer is stacked into the top of the first developer receptacle portion 53.
But the developer height in the developer height in the first developer receptacle portion 53 and the second developer receptacle portion 54 about equally.Therefore, when being in developer in the first developer receptacle portion 53 and being stacked into container top state, also be in developer in the second developer receptacle portion 54 and be stacked into container top state.Like this, if be in developer and be stacked into container top state in the second developer receptacle portion 54, then second transport spiral 56 and be in the state in the developer that is embedded in.Be in the state in the developer that is embedded in if second transports spiral 56, then second blade part that transports spiral 56 is difficult to carry out the stirring to developer top.If in this state from the top supply toner of the second developer receptacle portion 54, toner is slippage above developer, is not having under the abundant stirring, is transplanted on the first developer receptacle portion 53.Stir inadequate developer and be in the not enough state of carried charge, if use it for development, it is dirty that the background dirt can take place, or disperse at developing location generation toner etc.
As shown in Figure 3,, make that the developer level in the second developer receptacle portion 54 is less, be in lower position, can prevent the dirty dirty or toner of background that the developer because of the carried charge deficiency causes and disperse by reducing the developer level in the developing apparatus 5.But, if reduce developer level, make that the developer level in the second developer receptacle portion 54 is less, then the developer level in the first developer receptacle portion 53 also reduces, and the amount of drawing of drawing developer by developer roll 51 becomes instability.Specifically, because developer is in lower position, first top of transporting the blade of spiral 55 exceeds above the developer, if blade top is in and exceeds surface state on the developer, then be subjected to the developer position of blade part pushing part to uprise the developer position step-down of blade part dorsal part.Like this, before and after blade part, the developer amount of the drawing generation difference of developer roll 51, the developer mounting volume production on the developer roll 51 is given birth to irregular.The irregular abnormal image that is called as " it is irregular to transport pitch (screw pitch) " that causes of developer mounting amount on this developer roll 51.
Described " it is irregular to transport pitch " phenomenon is not limited to developer carrying member for transporting the spiral occasion, if transport the developer carrying member of developer by revolution, also existing should " it is irregular to transport pitch " problem.
Summary of the invention
The present invention puts forward for solving the existing problem of above-mentioned prior art, the objective of the invention is to, developing apparatus is provided, use the cartridge processing and the image processing system of this developing apparatus, stir and transport in the developing apparatus of parts and two developer receptacle portions being provided with two developers, can prevent that the dirty dirty and toner of the background that causes because of the developer that generates the carried charge deficiency from dispersing, and can prevent " it is irregular the to transport parts pitch " phenomenon on the image.
To achieve these goals, the present invention proposes following scheme:
(1) a kind of developing apparatus comprises:
Developer mounting body, the mounting developer;
Developer is taken in by developer receptacle portion, is provided with peristome;
First developer stirs and transports parts, by revolution, stirs the developer that transports in this developer receptacle portion, with the described developer mounting of developer replenishing body;
Second developer stirs and transports parts, by revolution, stirs the developer in this developer receptacle portion, transports developer towards stirring the developer carriage direction reverse direction that transports parts with described first developer;
Partition wall, stir at described first developer and to transport parts and second developer and stir and transport between the parts, transport the revolving shaft direction both ends that parts are transported in parts or the stirring of second developer along the stirring of first developer, become the peristome that developer can pass through;
Wherein, among the space that this partition wall is separated, be provided with first developer and stir developer aspect ratio in the space of transporting parts and be provided with the stirring of second developer and transport developer height height in the space of parts.
In the developing apparatus of (1), it is characterized in that (2) it is big that volume ratio second developer that makes described first developer stirring transport parts stirs the volume that transports parts.
(3) in the developing apparatus of (2), it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, and it is big that first developer stirs the axial region diameter of axle that the axial region diameter of axle that transports parts transports parts than the stirring of second developer.
(4) in the developing apparatus of (2), it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, and it is thick that first developer stirs the blade part that the blade part that transports parts transports parts than the stirring of second developer.
(5) in the developing apparatus of (2), it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, first developer stirs the blade part that transports parts and is provided with some blades, described some blades have same pitch, and it is many that the number of blade that parts are transported in the stirring of first developer is transported parts than the stirring of second developer.
(6) in the developing apparatus of (1), it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, and first developer stirs the developer travelling speed of transporting parts, and to stir the developer travelling speed of transporting parts than second developer slow.
In the developing apparatus of (6), it is characterized in that (7) pitch that described first developer stirs the blade part that transports parts is littler than the pitch that second developer stirs the blade part that transports parts.
(8) in the developing apparatus of (6), it is characterized in that, stir the blade part that transports parts at described first developer and have otch.
(9) in the developing apparatus of (6), it is characterized in that, stir to transport to be provided with on the parts at described first developer and stir the parallel plate-shaped member of axial region that transports parts with described first developer.
(10) a kind of cartridge processing comprises at least:
Picture mounting body;
The development means are to the image development on the described picture mounting body;
Described picture mounting body and the supporting of development means are one, and the image forming device body loading and unloading freely relatively; It is characterized in that:
The developing apparatus that uses in described (1)-(9) any is as described development means.
(11) a kind of image processing system comprises:
Charging facility makes that picture mounting surface is charged;
Sub-image forms means, is used for forming electrostatic latent image on described picture mounting body;
The development means to described latent electrostatic image developing, make it become the toner picture; It is characterized in that:
Use in described (1)-(9) developing apparatus of any or the cartridge processing of described (10), as described development means.
At developing apparatus of the present invention, use in the cartridge processing and image processing system of this developing apparatus the developer height height in the developer aspect ratio second developer receptacle portion in the first developer receptacle portion of developer mounting body supply developer.Like this, even stable in order to make that developer mounting body draws the amount of drawing of developer, make developer in the developer receptacle portion that wins fill up top to the incorporating section, the developer in the second developer receptacle portion can not fill up the top to the incorporating section yet.By making developer in the developer receptacle portion that wins fill up top, can prevent to produce on the image " it is irregular to transport pitch " phenomenon to the incorporating section.Have again, developer in the second developer receptacle portion can not fill up the top to the incorporating section, and therefore, expose from the developer surface on second top of transporting spiral, developer in the second developer receptacle portion can obtain stirring fully, prevents the developer of carried charge deficiency.
According to developing apparatus of the present invention, use the cartridge processing and the image processing system of this developing apparatus, can prevent that developer because of the carried charge deficiency from being that the dirty dirty or toner of the background of cause disperses, and prevents to take place on the image " it is irregular to transport pitch " phenomenon.
Description of drawings
Fig. 1 is the figure that is used to illustrate first problem points of developing apparatus in the past;
Fig. 2 is two stereographic maps that transport spiral of developing apparatus in the past;
Fig. 3 is the figure that is used to illustrate second problem points of developing apparatus in the past
Fig. 4 is the summary pie graph of the printer that relates to of the embodiment of the invention 1;
Fig. 5 represents the Y cartridge processing and the amplification pie graph on every side of this printer;
Fig. 6 represents from the toner bottle of this printer device for supplying stereographic map to developing apparatus supply toner;
The Y that Fig. 7 represents this printer with developing apparatus along the axial vertical plane sectional view of photoreceptor;
Fig. 8 represents the stereographic map that unload upper cap of the Y of this printer with developing apparatus;
Fig. 9 represents to unload from developing apparatus shown in Figure 8 the stereographic map of developer roll and frame parts;
Figure 10 represents the sectional view that be used to illustrate developer state of the Y of this printer with developing apparatus;
Figure 11 is two stereographic maps that transport spiral that the embodiment of the invention 1 relates to;
Figure 12 is two stereographic maps that transport spiral that the embodiment of the invention 2 relates to;
Figure 13 is two stereographic maps that transport spiral that the embodiment of the invention 3 relates to;
Figure 14 represents Y that modified example 1 of the present invention the relates to sectional view that is used to illustrate the developer state with developing apparatus;
Figure 15 is two stereographic maps that transport spiral that the embodiment of the invention 4 relates to;
Figure 16 is two stereographic maps that transport spiral that the embodiment of the invention 5 relates to;
Figure 17 is two stereographic maps that transport spiral that the embodiment of the invention 6 relates to;
Figure 18 is the vertical view of the developing apparatus that relates to of modified example 2 of the present invention;
Embodiment
Below, with reference to description of drawings preferable example of the present invention and embodiment.
In following examples, though to inscape, kind, combination, shape, configuration waits and has done various qualifications relatively,, these only exemplify, and the present invention is not limited thereto.
Example 1
Below, the printer (following brief note for " printer ") 100 of electrofax mode is described, example one example of the image processing system that is suitable for as the present invention.About imaging portion, describe with cartridge processing.
The basic comprising of printer 100 is described earlier, and Fig. 4 is the summary pie graph of printer 100, and in Fig. 4, printer 100 is provided with four cartridge processing 6Y, 6M, and 6C, 6K is respectively applied for and generates yellow, magenta, cyan, the toner picture of black.In the present invention, add symbol Y and represent yellow, C represents cyan, M represents magenta, K represents black.Described four cartridge processing 6Y, 6M, 6C, 6K are the look difference of image formation material only, and other formations are identical, change when reaching the life-span.
With the cartridge processing 6Y that is used to generate Y toner picture is example, and as shown in Figure 5, it is provided with the photoreceptor 1Y of the conduct of drum type as the mounting body, cleaning device 2Y, discharge system (not diagram), charging device 4Y, developing apparatus 5Y etc.The printer 100 bodies loading and unloading relatively of this cartridge processing can be changed the consumes zero parts.
By driving means (not diagram), drive photoreceptor 1Y and press revolution clockwise among the figure, described charging device 4Y makes that photoreceptor 1Y uniform surface is charged.To the scanning that exposes of the charged photoreceptor 1Y surface of described homogeneous, form the Y electrostatic latent image by laser L.Again by using the developing apparatus 5Y of Y toner, make described Y latent electrostatic image developing.Then, transfer printing is on intermediate transfer belt 8.After the intermediate transfer operation, remain in the lip-deep toner of photoreceptor 1Y and remove by cleaning device 2Y.Discharge system disappears to the residual charge of the photoreceptor 1Y after cleaning.Behind the electricity that disappears, the surface of photoreceptor 1Y is initialised, and after this forms image fully. Other cartridge processings 6M, 6C, 6K too, respectively at photoreceptor 1M, 1C, the last formation of 1K M, C, K toner picture, transfer printing is on intermediate transfer belt 8.
At cartridge processing 6Y, 6M, 6C, 6K below, configuration exposure device 7.The exposure device 7 that forms means as sub-image will be based on the laser radiation of image information at described cartridge processing 6Y, 6M, and 6C on each photoreceptor of 6K, exposes.By this exposure, at photoreceptor 1Y, 1M, 1C, the last formation of 1K Y, M, C, K electrostatic latent image.In exposure device 7, the revolution of motor driven polygonal mirror will shine on the photoreceptor by some optical lenses and reflective mirror on one side from the laser L of light source one scan edge.
On the downside and the right side of exposure device 7, configuration comprises paper receiver 26, the paper supply means of paper feed roller 27 and a pair of registration roller 28.Paper receiver 26 is being taken in many stacked transfer paper P as recording medium, and paper feed roller 27 joins with uppermost transfer paper P.By driving means (not diagram), drive paper feed roller 27 with the counterclockwise revolution, uppermost transfer paper P paper supply between the roller of a pair of registration roller 28, this transfer paper of registration roller 28 clampings P temporarily stops revolution.Then, transfer paper P is sent to the secondary transfer printing clamping part between when appropriate.In described paper supply means, the means of transporting are constituted by paper feed roller 27 and a pair of registration roller 28.This transports means transfer paper P is transported to the secondary transfer printing clamping part from paper receiver 26.
At cartridge processing 6Y, 6M, 6C, the top of 6K, configuration intermediate transfer assembly 15, this intermediate transfer assembly 15 comprises the intermediate transfer belt 8 as the intermediate transfer body, it is the endless belt.This intermediate transfer assembly 15 also is provided with four primary transfer bias voltage roller 9Y except that intermediate transfer belt 8,9M, 9C, 9K, cleaning device 10, secondary transfer printing back up roller 12, cleaning back up roller 13, jockey pulley 14 etc.Intermediate transfer belt 8 cleans back up roller 13 by described secondary transfer printing back up roller 12, and 14 framves of jockey pulley, and among these three rollers, having a roller at least is driven roller, drives revolution by it and makes intermediate transfer belt 8 move by counterclockwise among the figure.
Primary transfer bias voltage roller 9Y, 9M, 9C, 9K, respectively with photoreceptor 1Y, 1M, 1C, 1K matches, and the described intermediate transfer belt 8 of clamping forms the primary transfer clamping part.In this example, the back side (inner peripheral surface of endless belt) of middle transfer belt 8 is applied the transfer bias for example positive with the toner opposite polarity.Remove primary transfer bias voltage roller 9Y, 9M, 9C, the whole ground connection of the roller of 9K.Intermediate transfer belt 8 passes through in the process of primary transfer clamping part in order, photoreceptor 1Y, 1M, 1C, the Y on the 1K, M, on intermediate transfer belt 8, this is called " primary transfer " as superimposed transfer printing for C, K toner, on intermediate transfer belt 8, form four looks superimposed toner picture (following brief note is " four colour toners pictures ").
Between secondary transfer printing back up roller 12 and the secondary transfer roller 19, clamping intermediate transfer belt 8 forms the secondary transfer printing clamping part.The four colour toners pictures that are formed on the intermediate transfer belt 8 are transferred on the transfer paper P at this secondary transfer printing clamping part.Be attached with the transfer printing remaining toner that is not transferred on the transfer paper P by the intermediate transfer belt behind the secondary transfer printing clamping part 8.By cleaning device 10 these transfer printing remaining toners of cleaning.
At the secondary transfer printing clamping part, transfer paper P is clamped between the intermediate transfer belt 8 and secondary transfer roller 19 that moves on the surface, and transfer paper P is transported to fixing device 20.The transfer paper P that sends from the secondary transfer printing clamping part passes through to be subjected to heat and pressure between the roller of fixing device 20, and four colour toners look like to obtain photographic fixing.After this, transfer paper P is through a pair of exit roller 29, and row is outside machine.On printer body, form the portion 30 of piling up, be stacked in this in proper order through the exit roller 29 transfer paper P of row outside machine and pile up in the portion 30.
In Fig. 1, intermediate transfer assembly 15 and described piling up between the portion 30, configuration bottle collector 31.This bottle collector 31 is taken in the toner bottle 32Y as toner container, 32M, and 32C, 32K is used for taking in respectively toner Y, M, C, K.Toner bottle 32Y, 32M, 32C, 32K presses arranged in order from top to bottom in described bottle collector 31.Toner bottle 32Y, 32M, the toner Y in the 32C, 32K, M, C, K is by toner supply device supply cartridge processing 6Y, 6M, 6C, the developing apparatus among the 6K.Toner bottle 32Y, 32M, 32C, 32K and cartridge processing 6Y, 6M, 6C, 6K are independent separately, printer 100 bodies loading and unloading relatively.
Fig. 6 represents the stereographic map to the toner supply device 40Y of developing apparatus 5Y supply toner from the toner bottle 32Y of this printer.In printer 100 bodies, toner bottle 32Y be provided with the position below, be provided with the toner supply device 40Y that the Yellow toner in the toner bottle 32Y is supplied with developing apparatus 5Y.The part of only representing the developing apparatus 5Y of cartridge processing 6Y among Fig. 6.Cartridge processing 6Y presses arrow α direction slip among the figure, is set in printer 100 bodies.Transport pipe 43Y toner is transported to developing apparatus 5Y, transport the front end of pipe 43Y and the 58Y of toner replenishing portion of developing apparatus 5Y and be connected.
Be filled in the toner hopper portion 48Y of the interior new toner replenishing of toner bottle 32Y to toner supply device 40Y.Toner detection means (not diagram) is located in the developing apparatus 5Y, and when hanging down by the toner concentration in this toner detection means judgement developing apparatus 5Y, the toner that is stored in the 48Y of toner hopper portion is to developing apparatus 5Y supply.Toner to developing apparatus 5Y supply is managed 43Y from the 48Y of toner hopper portion by transporting, and supplies with the toner replenishing mouth 61Y of developing apparatus side from the peristome 45Y that transports pipe 43Y.
Below, the formation of the developing apparatus 5Y in the cartridge processing 6Y is described.Fig. 7 represents axially to see from photoreceptor the amplification sectional view of developing apparatus 5Y, and Fig. 8 represents the stereographic map that unloads upper cap 70Y state of the developing apparatus 5Y of this printer, and Fig. 9 represents to unload from state shown in Figure 8 the stereographic map of developer roll 51Y and frame parts 71Y.
In developing apparatus 5Y, expose developer roll 51Y from its shell nozzle part as developer mounting body.This developer roll 51Y is made of magnetic roller that means take place as magnetic field and development cover, and described magnetic roller is provided with 5 magnet P1, P2, and P3, P4, P5, described development cover is around described magnet coaxial rotating.At magnet P1, P2, P3, P4, among the P5, magnet P3, P4 are set to produce the magnetic field of same polarity, and other adjacent magnets are set to produce the magnetic field of opposed polarity.Along the surperficial moving direction of cover that develops, the subtend position in the downstream of magnet P5 is provided with the developing blade 52Y as developer limiting part, is used to limit the bed thickness of developer.
Below developer roll 51Y, be provided with the developer receptacle portion that is used to take in developer, be divided into first 53Y of developer receptacle portion and second 54Y of developer receptacle portion that is positioned at developer roll 51Y side by partition wall 59Y.In first 53Y of developer receptacle portion, be provided with to stir and transport first of parts and transport spiral 55Y as first developer, in second 54Y of developer receptacle portion, be provided with to stir and transport second of parts and transport spiral 56Y as second developer.First transport spiral 55Y and second transport spiral 56Y be by axial region and blade part constitute spiral-shaped.
Transport between the spiral 55Y at developer roll 51Y and first, be provided with frame parts 71Y, which is provided with connected entrance 72Y, be used to pass through developer.The partition wall 59Y that separates developer receptacle portion forms the first peristome 59Ya and the second peristome 59Yb at the both ends of developer receptacle portion, and developer can pass through the described first peristome 59Ya and the second peristome 59Yb.
In the developing apparatus 5Y of this example 1, use the two-component developing agent of forming by toner and carrier, but the present invention is not limited thereto, also can use the monocomponent toner that does not comprise carrier.
In developing apparatus 5Y, in advance toner and carrier are accommodated in innerly as developer, consume toner because of developing, as shown in Figure 6, from as the toner bottle 32Y of toner container to developing apparatus 5Y supply toner.
The following describes the action of developing apparatus 5Y.
From toner bottle 32Y to the toner of developing apparatus 5Y supply from toner replenishing mouth 61Y (Fig. 8, among Fig. 9 shown in the dotted line) supply in developing apparatus 5Y.Supply is transported spiral 56Y to the toner of second 54Y of developer receptacle portion of developing apparatus 5Y by second and is stirred with carrier.The developer that is made of toner and carrier in second 54Y of developer receptacle portion is transported spiral 56Y stirring by second on one side, towards diagram arrow B direction be transported on one side.Be subjected to second to transport spiral 56Y and transport, the developer that arrives the second developer receptacle portion 54Y end is shifted to first 53Y of developer receptacle portion by the first peristome 59Ya.Developer in first 53Y of developer receptacle portion is transported spiral 55Y by first on one side and stirs, towards diagram arrow A direction be transported on one side, arrive the first developer receptacle portion 53Y end, by the second peristome 59Yb, shift to second 54Y of developer receptacle portion.Like this, developer transports spiral 55Y and second by first and transports spiral 56Y and circulate in developing apparatus 5Y.
In first 53Y of developer receptacle portion, be subjected to first to transport spiral 55Y and stir among the developer transport, near the developer mounting of developer roll 51Y on developer roll 51Y.The magnetic force that carrier in the developer is produced by magnet P4 in the magnetic roller or P5 adsorbs, and mounting is to developer roll 51Y.Toner in the developer is stirred, the band and the electricity of carrier antipolarity, between toner and the carrier effect have electrostatic force and carrier together mounting to developer roll 51Y.The developer of mounting to the developer roll 51Y is by the gap (squeegee gap) between described developing blade 52Y and the developer roll 51Y surface, and bed thickness is limited.The confined developer of bed thickness is transported to the developing regional facing to photoreceptor 1, owing to influenced by the magnetic force that magnet P1 produces in the magnetic roller, becomes the upright state of fringe on developer roll 51Y.
In this example, move towards equidirectional with the linear velocity faster than photoreceptor 1Y surface at developing regional on the surface of developer roll 51Y.Fringe stands in the carrier surface of swiping photoreceptor 1Y on one side on the developer roll 51Y, on one side will be attached to the surface of the toner supply photoreceptor 1Y of carrier surface.At this moment, apply the development bias voltage to developer roll 51Y, like this, form the development electric field at developing regional by power supply (not diagram).Between electrostatic latent image on the photoreceptor 1Y and developer roll 51Y, effect has the toner that makes on the developer roll 51Y to shift to the electrostatic force of electrostatic latent image side.Therefore, the toner on the developer roll 51Y is attached on the electrostatic latent image on the photoreceptor 1Y.Be attached on the electrostatic latent image on the photoreceptor 1Y by described toner, the electrostatic latent image on the photoreceptor 1Y is developed the toner picture into corresponding look.
In this example, developer roll 51Y is connected with drive unit by clutch coupling, by this clutch coupling, can temporarily stop developer roll 51Y revolution.
At reference Fig. 1, Fig. 2 in the developing apparatus in the past 5 of Fig. 3 explanation, is difficult to prevent to generate the developer of carried charge deficiency, is difficult to prevent " pitch is irregular " phenomenon.
Developing apparatus 5 comprises housing that forms developer receptacle portion and the housing that plays the effect of lid from the top, and the intersection of the two housings of the second developer receptacle portion, 54 sides is compared with the first developer receptacle portion 53 sides, is in low position.In this developing apparatus 5, in order to prevent " pitch is irregular " phenomenon, if developer becomes the state of filling up in the first developer receptacle portion 53 and the second developer receptacle portion 54, then can be from the gap of the intersection of the second developer receptacle portion, 54 sides of two housings, leak developer, developer takes place disperse.
Have again, fill up to the top state, need to comprise the developer filling of volume carrier in advance in developing apparatus in order to make win developer receptacle portion 53 and the second developer receptacle portion 54 all be in developer.And developer fills up under the second developer receptacle portion, 54 states, and it is big to act on second torque of transporting on the spiral 56Y, makes this second transport the rotating motor of spiral 56Y and gear must bear this big torque.
So, in this example,, preventing " it is irregular to transport pitch " phenomenon in order to prevent to generate the developer of carried charge deficiency, it is big that the volume ratio second that making wins transports spiral 55Y is transported spiral 56Y volume.
Like this, transport spiral 56Y volume and compare with second, first to transport the volume of spiral 55Y big, and Figure 10 represents to use such two sectional views that transport the developing apparatus 5Y of spiral from axially seeing.Because to transport spiral 56Y volume big for first volume ratio second of transporting spiral 55Y, the space of taking in developer interior than second 54Y of developer receptacle portion, the space of taking in developer in first 53Y of developer receptacle portion is narrow and small.If it is narrow and small to take in the space of developer, as shown in figure 10, the developer height in developer aspect ratio second 54Y of developer receptacle portion in first 53Y of developer receptacle portion.
Like this, even for the amount of drawing that makes developer roll 51Y draw developer is stablized, developer in first 53Y of developer receptacle portion is in and fills up up to top, incorporating section state, also can not become developer in second 54Y of developer receptacle portion and be in and fill up up to top, incorporating section state.
The interior developer of the 53Y of developer receptacle portion of winning is in fills up up to top, incorporating section state, the amount of drawing that developer roll 51Y draws developer is stable, can prevent to produce on the image " it is irregular to transport pitch " phenomenon.
Because can not become developer in second 54Y of developer receptacle portion is in and fills up up to top, incorporating section state, second top of transporting spiral 56Y becomes the state that exposes from the developer surface, in second 54Y of developer receptacle portion, developer is fully stirred, and can prevent the developer of carried charge deficiency.Like this, can prevent that be used to the develop image background dirt that causes of developer because of the carried charge deficiency is dirty, prevent dispersing at the toner of developing location.
In addition, can prevent to disperse from the body clearance leakage because of the developer that developer in second 54Y of developer receptacle portion fills up for cause.
Have again, compared with the past, can reduce the developer level in the developing apparatus 5Y, can suppress second rising of transporting the rotational torque of spiral 56Y.Owing to reduced the developer level in the developing apparatus 5Y, can reduce cost.
Developing apparatus 5Y is set to the initial of printer 100 bodies, and the height of developer in first 53Y of developer receptacle portion and the developer of second 54Y of developer receptacle portion is roughly the same.Because it is little that first 53Y of developer receptacle portion can take in the volume of developer, therefore, developer level is few.
Then, if highly identical, the developer level by the first peristome 59Ya is than many by the developer level of the second peristome 59Yb, the developer level increase that first 53Y of developer receptacle portion is interior.If the developer level in first 53Y of developer receptacle portion increases, the developer height and position in first 53Y of developer receptacle portion uprises, and the developer level by the second peristome 59Yb also increases.Developer level and the developer level by the second peristome 59Yb about equally under the state in the unit interval by the first peristome 59Ya, the developer level two developer receptacle portions in is stablized.Like this, if developer level is stable, become state shown in Figure 10.
To transport the developer upwards of movement difference of spiral 56Y very big if first transports spiral 55Y and second, then transport the initial point that spiral 55Y transports first, promptly occur developer near the first peristome 59Ya and be detained, developer level increases for the moment in the developing apparatus end, and the developer height and position uprises.If in the developing apparatus end, the developer height and position uprises, and then developer can enter the gap between the housing parts of the end of developer roll 51Y and developing apparatus 5Y, developer roll 51Y is produced braking, or developer is to external leaks.But, in developing apparatus 5Y, being provided with frame parts 71Y, it has connected entrance 72Y, becomes the state on the top that fills up the first peristome 59Ya.Like this, even increase at developing apparatus end developer level in a period of time, the developer height increases, and can prevent that also developer from arriving the end of developer roll 51Y.
Embodiment 1
The following describes first volume ratio second of transporting spiral 55Y and transport the embodiment 1 of the bulky concrete structure of spiral 56Y.
Figure 11 is that first of the developing apparatus 5Y that is used for that the embodiment of the invention 1 relates to transports the stereographic map that spiral 55Ya and second transports spiral 56Y.As shown in figure 11, being used for the diameter of axle that first of developing apparatus 5Y transports spiral 55Ya, to transport spiral 56Y than second big, and therefore, it is big that first volume ratio second of transporting spiral 55Ya is transported spiral 56Y volume.Specifically, use the diameter of axle to transport spiral 55Ya as first, use the diameter of axle to transport spiral 56Y as second as the helical element of 5.0mm as the helical element of 7.0mm.Except diameter of axle difference, other pitch as blade are wide, the speed of gyration of spiral etc., and both are identical.
The inventor is made as 5.0mm with first diameter of axle that transports spiral 55Ya, 6.0mm, and 7.0mm, four kinds of 8.0mm compare research.Relative diameter of axle 5.0mm in the past, when first diameter of axle that transports spiral 55Ya is made as 6.0mm, during 7.0mm, the situation that " pitch is irregular " takes place improves.But when first diameter of axle that transports spiral 55Y was made as 8.0mm, the developer level in first 53Y of developer receptacle portion was too much, and the spiral revolution is braked.Further relatively first diameter of axle that transports spiral 55Y is made as 6.0mm, the situation during 7.0mm, and better when finding to adopt 7.0mm, therefore, first diameter of axle that transports spiral 55Ya is made as 7.0mm.
As mentioned above, be used for the diameter of axle that first of developing apparatus 5Y transports spiral 55Ya to transport spiral 56Y than second big by making, therefore, it is big that first volume ratio second of transporting spiral 55Ya is transported spiral 56Y volume.As shown in figure 10, compare the developer height height in first 53Y of developer receptacle portion with the developer height in second 54Y of developer receptacle portion.Like this, can prevent to generate the developer of carried charge deficiency, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
Embodiment 2
The following describes first volume ratio second of transporting spiral 55Y and transport the embodiment 2 of the bulky concrete structure of spiral 56Y.
Figure 12 is that first of the developing apparatus 5Y that is used for that the embodiment of the invention 2 relates to transports the stereographic map that spiral 55Yb and second transports spiral 56Y.As shown in figure 12, being used for blade that first of developing apparatus 5Y transports spiral 55Yb, to transport spiral 56Y than second thick, and therefore, it is big that first volume ratio second of transporting spiral 55Yb is transported spiral 56Y volume.Except the vane thickness difference, other are as the diameter of axle, and the pitch of blade is wide etc., and both are identical.
Be used for vane thickness that first of developing apparatus 5Y transports spiral 55Yb to transport spiral 56Y than second thick by making, therefore, it is big that first volume ratio second of transporting spiral 55Yb is transported spiral 56Y volume.As shown in figure 10, compare the developer height height in first 53Y of developer receptacle portion with the developer height in second 54Y of developer receptacle portion.Like this, can prevent to generate the developer of carried charge deficiency, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
Embodiment 3
The following describes first volume ratio second of transporting spiral 55Y and transport the embodiment 3 of the bulky concrete structure of spiral 56Y.
Figure 13 is that first of the developing apparatus 5Y that is used for that the embodiment of the invention 3 relates to transports the stereographic map that spiral 55Yc and second transports spiral 56Y.As shown in figure 13, it is many that first number of blade of transporting spiral 55Yc that is used for developing apparatus 5Y is transported spiral 56Y than second, and therefore, it is big that first volume ratio second of transporting spiral 55Yc is transported spiral 56Y volume.Specifically, second to transport spiral 56Y be the shape that a blade is wound on axial region, and first to transport spiral 55Yc be the shape that two blades are wound on axial region.Except number of blade difference, other are as diameter of axle size, and the pitch of blade is wide, vane thickness etc., and both are identical.
Many by making first number of blade of transporting spiral 55Yc that is used for developing apparatus 5Y transport spiral 56Y than second, therefore, it is big that first volume ratio second of transporting spiral 55Yc is transported spiral 56Y volume.As shown in figure 10, compare the developer height height in first 53Y of developer receptacle portion with the developer height in second 54Y of developer receptacle portion.Like this, can prevent to generate the developer of carried charge deficiency, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
In the foregoing description 1-3, be illustrated using yellow developing apparatus 5Y, use the developing apparatus 5M of its allochromatic colour, 5C, 5K, except toner look difference, other are identical with developing apparatus 5Y.What therefore, illustrate in the foregoing description 1-3 transports spiral and also can be applicable to developing apparatus 5M, 5C, 5K.
As mentioned above, developing apparatus 5Y according to example 1, big by making the volume ratio second of transporting spiral 55Y of winning transport spiral 56Y volume, the developer aspect ratio in developer roll 51Y supplies with first 53Y of developer receptacle portion of developer is accepted the developer height height in second 54Y of developer receptacle portion of toner replenishing from top.Like this, even stable in order to make that developer roll 51Y draws the amount of drawing of developer, make developer in the 53Y of developer receptacle portion that wins fill up top to the incorporating section, the developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section yet.By making developer in the 53Y of developer receptacle portion that wins fill up top, can prevent to produce on the image " it is irregular to transport pitch " phenomenon to the incorporating section.Have again, developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section, and therefore, expose from the developer surface on second top of transporting spiral 56Y, developer among second 54Y of developer receptacle portion can obtain stirring fully, prevents the developer of carried charge deficiency.Like this, by using developing apparatus 5Y, can prevent that developer because of the carried charge deficiency from being that the dirty dirty or toner of the background of cause disperses, and prevents to take place on the image " it is irregular to transport pitch " phenomenon.
Can prevent to disperse from the gap, can prevent abnormal image, prevent in the machine dirty dirty because of the developer that developer fills up for cause.Since can prevent in the machine dirty dirty, can dirty dirty operator's hand when changing consumables, give and operator's unplessantness displeasure when preventing to change consumables.
Compared with the past, can reduce the developer level in the developing apparatus 5Y, can alleviate second rotational torque of transporting spiral 56Y, reduce the abrasion of drive division.Like this, plant failure is few, and prolong device lifetime.
Be used for the diameter of axle that first of developing apparatus 5Y transports spiral 55Ya to transport spiral 56Y than second big by making, therefore, it is big that first volume ratio second of transporting spiral 55Y is transported spiral 56Y volume.
Be used for blade that first of developing apparatus 5Y transports spiral 55Yb to transport spiral 56Y than second thick by making, therefore, it is big that first volume ratio second of transporting spiral 55Y is transported spiral 56Y volume.
Many by making first number of blade of transporting spiral 55Yc that is used for developing apparatus 5Y transport spiral 56Y than second, therefore, it is big that first volume ratio second of transporting spiral 55Y is transported spiral 56Y volume.
Big by making the volume ratio second of transporting spiral 55Y of winning transport spiral 56Y volume, improve first intensity of transporting spiral 55Y.And in the various embodiments described above, making wins, and to transport the sectional area ratio of spiral 55Y big in the past, and the vibration that causes because of revolution is few, can improve wobble accuracy.
Developing apparatus 5Y constitutes cartridge processing 6Y at least with photoreceptor 1Y, and printer 100 bodies loading and unloading relatively can realize disposable replacing consumable product.Like this, can provide cartridge processing, it can prevent that the developer because of the carried charge deficiency from being that the dirty dirty or toner of the background of cause disperses, and prevents to take place on the image " it is irregular to transport pitch " phenomenon.
Modified example 1
In example 1, big by making the volume ratio second of transporting spiral 55Y of winning transport spiral 56Y volume, the space of taking in developer interior than second 54Y of developer receptacle portion, the space of taking in developer in first 53Y of developer receptacle portion is narrow and small.Because it is narrow and small to take in the space of developer, the developer height and position uprises, as shown in figure 10, and the height and position developer height interior of the developer in first 53Y of developer receptacle portion than second 54Y of developer receptacle portion.As making the space of taking in developer in the 53Y of developer receptacle portion that wins, be not limited to above-mentioned cited structure than the narrow and small structure in the space of taking in developer in second 54Y of developer receptacle portion.
Below, the structure of modified example 1 is described, its volume by volumetric ratio second 54Y of developer receptacle portion of first 53Y of developer receptacle portion is little, makes the space of taking in developer interior than second 54Y of developer receptacle portion, the interior space of taking in developer of the 53Y of developer receptacle portion of winning narrow and small.
Figure 14 represent that modified example 1 of the present invention relates to from axially seeing the sectional view that transports spiral of developing apparatus 5Y.As shown in figure 14, make the volume of volumetric ratio second 54Y of developer receptacle portion of the 53Y of developer receptacle portion that wins little.The volume of volumetric ratio second 54Y of developer receptacle portion by making the 53Ya of developer receptacle portion that wins is little, even for the amount of drawing that makes developer roll 51Y draw developer is stablized, developer in first 53Ya of developer receptacle portion is in and fills up up to top, incorporating section state, also can not become developer in second 54Y of developer receptacle portion and be in and fill up up to top, incorporating section state.
The interior developer of the 53Ya of developer receptacle portion of winning is in fills up up to top, incorporating section state, the amount of drawing that developer roll 51Y draws developer is stable, can prevent to produce on the image " it is irregular to transport pitch " phenomenon.
Because can not become developer in second 54Y of developer receptacle portion is in and fills up up to top, incorporating section state, second top of transporting spiral 56Y becomes the state that exposes from the developer surface, in second 54Y of developer receptacle portion, developer is fully stirred, and can prevent the developer of carried charge deficiency.
Like this, in the developing apparatus 5Y of above-mentioned modified example 1, same with above-mentioned example 1, can prevent that be used to the develop image background dirt that causes of developer because of the carried charge deficiency is dirty, prevent the dispersing of the toner of developing location, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
Example 2
In above-mentioned example 1, big by making the volume ratio second of transporting spiral 55Y of winning transport spiral 56Y volume, the space of taking in developer interior than second 54Y of developer receptacle portion, the space of taking in developer in first 53Y of developer receptacle portion is narrow and small.Because it is narrow and small to take in the space of developer, the developer height and position uprises, as shown in figure 10, and the height and position developer height interior of the developer in first 53Y of developer receptacle portion than second 54Y of developer receptacle portion.
For the height and position that makes the developer in the 53Y of developer receptacle portion that wins than the developer height in second 54Y of developer receptacle portion, also can adopt the slow-footed method of developer movement in developer movement velocity ratio second 54Y of developer receptacle portion that makes in the 53Y of developer receptacle portion that wins.
Below, the slow-footed structure of developer movement in developer movement velocity ratio second 54Y of developer receptacle portion that makes in the 53Y of developer receptacle portion that wins is described, as example 2.The basic structure of the printer that example 2 relates to is identical with example 1, transports spiral-shaped difference in the developing apparatus, omits with the identical point explanation of example 1, and difference only is described.
To make the slow developing apparatus 5Y of travelling speed that transports spiral 55Y that wins be set to the initial of printer 100 bodies, the height of developer in first 53Y of developer receptacle portion and the developer of second 54Y of developer receptacle portion is roughly the same, and developer level is also roughly the same.
In this state, if drive developing apparatus 5Y, because it is slow that first travelling speed of transporting spiral 55Y is transported the travelling speed of spiral 56Y than second, developer level by the first peristome 59Ya is than many by the developer level of the second peristome 59Yb, and the developer level in first 53Y of developer receptacle portion increases.If the developer level in first 53Y of developer receptacle portion increases, the developer height and position in first 53Y of developer receptacle portion uprises, and the developer level of unit interval by the second peristome 59Yb increases.
The developer level by the first peristome 59Ya than the state of Duo by the developer level of the second peristome 59Yb under, the developer minimizing of second 54Y of developer receptacle portion, the unit interval is passed through the developer level minimizing of the first peristome 59Ya.Developer level and the developer level of unit interval by the first peristome 59Ya about equally under the state in the unit interval by the second peristome 59Yb, the developer level two developer receptacle portions in is stablized.Like this, if developer level is stable, become state shown in Figure 10.
As mentioned above, slow by making the travelling speed of transporting spiral 55Y of winning transport the travelling speed of spiral 56Y than second, the height and position developer height and position height interior of the developer in first 53Y of developer receptacle portion than second 54Y of developer receptacle portion, identical with example 1, become state shown in Figure 10.Like this, even for the amount of drawing that makes developer roll 51Y draw developer is stablized, developer in first 53Y of developer receptacle portion is in and fills up up to top, incorporating section state, also can not become developer in second 54Y of developer receptacle portion and be in and fill up up to top, incorporating section state.
The interior developer of the 53Y of developer receptacle portion of winning is in fills up up to top, incorporating section state, the amount of drawing that developer roll 51Y draws developer is stable, can prevent to produce on the image " it is irregular to transport pitch " phenomenon.
Because can not become developer in second 54Y of developer receptacle portion is in and fills up up to top, incorporating section state, second top of transporting spiral 56Y becomes the state that exposes from the developer surface, in second 54Y of developer receptacle portion, developer is fully stirred, and can prevent the developer of carried charge deficiency.
Embodiment 4
The following describes travelling speed that making wins transports spiral 55Y than the second first kind of slow concrete structure of travelling speed that transports spiral 56Y, as embodiment 4.
Figure 15 is that first of the developing apparatus 5Y that is used for that the embodiment of the invention 4 relates to transports the stereographic map that spiral 55Yd and second transports spiral 56Y.As shown in figure 15, being used for the pitch width that is wound on the blade on the axial region that first of developing apparatus 5Y transports spiral 55Yd, to transport spiral 56Y than second narrow.If make that the pitch width transport spiral is narrow, then transport the distance of transporting developer between spiral revolution one-period and shorten.Therefore, first transports spiral 55Yd and second transports spiral 56Y with identical speed of gyration revolution occasion, and it is slow that first travelling speed of transporting spiral 55Yd is transported the travelling speed of spiral 56Y than second.
As mentioned above, it is narrow to transport spiral 56Y by the first pitch width that transports the blade of spiral 55Y than second, and it is slow that the travelling speed that can make wins transports spiral 55Y is transported the travelling speed of spiral 56Y than second.As shown in figure 10, compare the developer height height in first 53Y of developer receptacle portion with the developer height in second 54Y of developer receptacle portion.Like this, can prevent to generate the developer of carried charge deficiency, prevent that toner from dispersing, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
Embodiment 5
The following describes travelling speed that making wins transports spiral 55Y than the second second kind of slow concrete structure of travelling speed that transports spiral 56Y, as embodiment 5.
Figure 16 is that first of the developing apparatus 5Y that is used for that the embodiment of the invention 5 relates to transports the stereographic map that spiral 55Ye and second transports spiral 56Y.As shown in figure 16, first blade part that transports spiral 55Ye that is used for developing apparatus 5Y is provided with otch 91.Owing to otch is set transporting on the spiral, transported the pushing of helical blade portion, lose in incision along a part of transporting the axially movable developer of spiral, transport efficient and reduce.Therefore, first transports spiral 55Ye and second transports spiral 56Y with identical speed of gyration revolution occasion, and it is slow that first travelling speed of transporting spiral 55Ye is transported the travelling speed of spiral 56Y than second.
As mentioned above, by at first blade part that transports spiral 55Ye otch 91 being set, it is slow that the travelling speed that can make wins transports spiral 55Y is transported the travelling speed of spiral 56Y than second.As shown in figure 10, compare the developer height height in first 53Y of developer receptacle portion with the developer height in second 54Y of developer receptacle portion.Like this, can prevent to generate the developer of carried charge deficiency, prevent that toner from dispersing, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
The following describes travelling speed that making wins transports spiral 55Y than second the third slow concrete structure of travelling speed that transports spiral 56Y, as embodiment 6.
Figure 17 is that first of the developing apparatus 5Y that is used for that the embodiment of the invention 6 relates to transports the stereographic map that spiral 55Yf and second transports spiral 56Y.As shown in figure 17, first axial region that transports spiral 55Yf that is used for developing apparatus 5Y is provided with floor 92, and it is the plate-shaped member with axially parallel.Owing to this floor 92 is set transporting on the spiral,, transports efficient and reduce to being transported the pushing of helical blade portion, producing resistance along transporting the axially movable developer of spiral.Therefore, first transports spiral 55Yf and second transports spiral 56Y with identical speed of gyration revolution occasion, and it is slow that first travelling speed of transporting spiral 55Yf is transported the travelling speed of spiral 56Y than second.
As mentioned above, by this floor 92 being set transporting on the spiral, it is slow that the travelling speed that can make wins transports spiral 55Y is transported the travelling speed of spiral 56Y than second.As shown in figure 10, compare the developer height height in first 53Y of developer receptacle portion with the developer height in second 54Y of developer receptacle portion.Like this, can prevent to generate the developer of carried charge deficiency, prevent that toner from dispersing, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
In the foregoing description 4-6, be illustrated using yellow developing apparatus 5Y, use the developing apparatus 5M of its allochromatic colour, 5C, 5K, except toner look difference, other are identical with developing apparatus 5Y.What therefore, illustrate in the foregoing description 4-6 transports spiral and also can be applicable to developing apparatus 5M, 5C, 5K.
The structure of the foregoing description 4,6 not only makes the travelling speed of transporting spiral 55Y of winning slow, and it is big to make the volume ratio second of transporting spiral 55Y of winning transport spiral 56Y volume, like this, also can obtain the effect identical with example 1.
As mentioned above, developing apparatus 5Y according to example 2, slow by making the travelling speed of transporting spiral 55Y of winning transport spiral 56Y than second, the developer aspect ratio in developer roll 51Y supplies with first 53Y of developer receptacle portion of developer is accepted the developer height height in second 54Y of developer receptacle portion of toner replenishing from top.Like this, even stable in order to make that developer roll 51Y draws the amount of drawing of developer, make developer in the 53Y of developer receptacle portion that wins fill up top to the incorporating section, the developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section yet.By making developer in the 53Y of developer receptacle portion that wins fill up top, can prevent to produce on the image " it is irregular to transport pitch " phenomenon to the incorporating section.Have again, developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section, and therefore, expose from the developer surface on second top of transporting spiral 56Y, developer among second 54Y of developer receptacle portion can obtain stirring fully, prevents the developer of carried charge deficiency.Like this, by using developing apparatus 5Y, can prevent that developer because of the carried charge deficiency from being that the dirty dirty or toner of the background of cause disperses, and prevents to take place on the image " it is irregular to transport pitch " phenomenon.
Be used for pitch width that first of developing apparatus 5Y transports the blade of spiral 55Yd to transport spiral 56Y than second narrow by making, it is slow that the travelling speed that can make wins transports spiral 55Y is transported the travelling speed of spiral 56Y than second.
By making first blade part that transports spiral 55Ye be used for developing apparatus 5Y that otch 91 is set, it is slow that the travelling speed that can make wins transports spiral 55Y is transported the travelling speed of spiral 56Y than second.
Be used on the axial region that first of developing apparatus 5Y transports spiral 55Yf floor 92 being set by making, it is slow that the travelling speed that can make wins transports spiral 55Y is transported the travelling speed of spiral 56Y than second.
Even the developer in first 53Y of developer receptacle portion fills up the top to the incorporating section,, therefore, can reduce being applied to first load that transports on the spiral 55Y because first to transport the travelling speed of spiral 55Y slow.
Modified example 2
In example 2, slow by making the travelling speed of transporting spiral 55Y of winning transport spiral 56Y travelling speed than second, the developer movement speed in developer movement velocity ratio second 54Y of developer receptacle portion in first 53Y of developer receptacle portion is slow.Because developer movement speed is slow, the developer height and position uprises, as shown in figure 10, and the height and position developer height interior of the developer in first 53Y of developer receptacle portion than second 54Y of developer receptacle portion.The slow-footed structure of developer movement as in developer movement velocity ratio second 54Y of developer receptacle portion that makes in the 53Y of developer receptacle portion that wins is not limited to above-mentioned cited structure.
Below, the structure of modified example 2 is described, it transports by the developer that is provided for suppressing transporting developer in first 53Y of developer receptacle portion and suppresses parts 53Yb, makes the developer movement speed in developer movement velocity ratio second 54Y of developer receptacle portion in the 53Y of developer receptacle portion that wins slow.
Figure 18 represents the sectional view of seeing developing apparatus 5Y from the top that modified example 2 of the present invention relates to.As shown in figure 18, the developer that is provided for suppressing transporting developer in first 53Y of developer receptacle portion transports and suppresses parts 53Yb.Developer transports that to suppress parts 53Yb be the flexible film shape parts that resin such as tygon constitutes.To suppress parts 53Yb soft, yielding because developer transports, and transports spiral 55Y and contact with first, and easy deformation can not harm first revolution of transporting spiral 55Y.And the developer particle is moved to a certain degree impairment, reduce the efficient of transporting of developer.Therefore, first transports spiral 55Y and second transports spiral 56Y with identical speed revolution occasion, and it is slow that first travelling speed of transporting spiral 55Y is transported the travelling speed of spiral 56Y than second.
As mentioned above, transport by the developer that is provided for suppressing transporting developer in first 53Y of developer receptacle portion and to suppress parts 53Yb, it is slow that the travelling speed that making wins transports spiral 55Y is transported spiral 56Y than second.As shown in figure 10, can make the interior interior developer height height of developer aspect ratio second 54Y of developer receptacle portion of the 53Y of developer receptacle portion that wins.
Developer in the developing apparatus 5Y becomes state shown in Figure 10, even for the amount of drawing that makes developer roll 51Y draw developer is stablized, make the developer of winning in the 53Y of developer receptacle portion fill up top to the incorporating section, the developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section yet.
By making developer in the 53Y of developer receptacle portion that wins fill up top to the incorporating section, the amount of drawing that developer roll 51Y draws developer is stable, can prevent to produce on the image " it is irregular to transport pitch " phenomenon.
Have again, developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section, and therefore, expose from the developer surface on second top of transporting spiral 56Y, developer among second 54Y of developer receptacle portion can obtain stirring fully, prevents the developer of carried charge deficiency.
Like this, in the developing apparatus 5Y of above-mentioned modified example 2, same with above-mentioned example 2, can prevent that be used to the develop image background dirt that causes of developer because of the carried charge deficiency is dirty, prevent the dispersing of the toner of developing location, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
Modified example 3
As making the travelling speed of transporting spiral 55Y of winning transport the slow formation of spiral 56Y travelling speed, can realize by first travelling speed of transporting spiral 55Y that slows down than second.To transport the drive source that spiral 55Y and second transports spiral 56Y be a motor occasion when first, can for example change two transmission gear ratios that transport spiral and realize.Transport spiral 55Y and second and transport spiral 56Y and be respectively equipped with the CD-ROM drive motor occasion when first, the CD-ROM drive motor winding number that can for example make wins transports spiral 55Y realizes slowly.
In this formation, owing to only make two to transport the speed of gyration difference of spiral, two shapes of transporting spiral are roughly the same.
As mentioned above, slow by making the speed of gyration of transporting spiral 55Y of winning transport spiral 56Y than second, it is slow that the travelling speed that can make wins transports spiral 55Y is transported spiral 56Y than second.As shown in figure 10, can make the interior interior developer height height of developer aspect ratio second 54Y of developer receptacle portion of the 53Y of developer receptacle portion that wins.
Developer in the developing apparatus 5Y becomes state shown in Figure 10, even for the amount of drawing that makes developer roll 51Y draw developer is stablized, make the developer of winning in the 53Y of developer receptacle portion fill up top to the incorporating section, the developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section yet.
By making developer in the 53Y of developer receptacle portion that wins fill up top to the incorporating section, the amount of drawing that developer roll 51Y draws developer is stable, can prevent to produce on the image " it is irregular to transport pitch " phenomenon.
Have again, developer in second 54Y of developer receptacle portion can not fill up the top to the incorporating section, and therefore, expose from the developer surface on second top of transporting spiral 56Y, developer among second 54Y of developer receptacle portion can obtain stirring fully, prevents the developer of carried charge deficiency.
Like this, in the developing apparatus 5Y of above-mentioned modified example 3, same with above-mentioned example 2, can prevent that be used to the develop image background dirt that causes of developer because of the carried charge deficiency is dirty, prevent the dispersing of the toner of developing location, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
Shown in the developing apparatus of above-mentioned example 1 and example 2, making the developer height height in developer aspect ratio second 54Y of developer receptacle portion in the 53Y of developer receptacle portion that wins, is to produce by two volume differences or the travelling speed differences of transporting spiral.Parts are transported in stirring as the developer beyond the spiral, can use for example resin system or the metal coil that transports.The coil occasion is transported in use, and being equivalent to first coil that transports that transports spiral can be by making its line footpath thick, and speed of gyration is slow, and it is slow to reach travelling speed.Can also make that its coil pitch is little.For the coil that transports that has the axle center with soldering etc., can adopt the methods such as the axle center is thick of making.If use this developing apparatus that transports coil, also same with above-mentioned example 1,2, can prevent that be used to the develop image background dirt that causes of developer because of the carried charge deficiency is dirty, prevent the dispersing of the toner of developing location, prevent to take place on the image " it is irregular to transport pitch " phenomenon.
Above with reference to description of drawings embodiments of the invention, but the present invention is not limited to the foregoing description.Can do all changes in the technology of the present invention thought range, they all belong to protection scope of the present invention.
For example, in the image processing system of above-mentioned explanation, be will be formed on each as the toner on the mounting body as transfer printing on the transfer printing material that constitutes by intermediate transfer belt, but, the present invention also be applicable to directly will be formed on each as the toner on the mounting body as the image processing system of superimposed transfer printing on recording medium.This occasion, recording medium constitutes the transfer printing material, and transfer printing is respectively formed at each toner picture as the look inequality on the mounting body on this transfer printing material.
Have again, in above-mentioned example, enumerated the image processing system that is provided with four cartridge processings, but the present invention also can be applicable to the image processing system that only is provided with a cartridge processing.
In the above-described embodiments, in cartridge processing, comprise picture mounting body, but the present invention is not limited thereto, also can not comprise picture mounting body, and only comprise developing apparatus.This occasion can be accommodated in other unit as the mounting body, device body loading and unloading relatively.
Claims (11)
1. developing apparatus comprises:
Developer mounting body, the mounting developer;
Developer is taken in by developer receptacle portion, is provided with peristome;
First developer stirs and transports parts, by revolution, stirs the developer that transports in this developer receptacle portion, with the described developer mounting of developer replenishing body;
Second developer stirs and transports parts, by revolution, stirs the developer in this developer receptacle portion, transports developer towards stirring the developer carriage direction reverse direction that transports parts with described first developer;
Partition wall, stir at described first developer and to transport parts and second developer and stir and transport between the parts, transport the revolving shaft direction both ends that parts are transported in parts or the stirring of second developer along the stirring of first developer, become the peristome that developer can pass through;
Wherein, among the space that this partition wall is separated, be provided with first developer and stir developer aspect ratio in the space of transporting parts and be provided with the stirring of second developer and transport developer height height in the space of parts.
2. according to the developing apparatus of record in the claim 1, it is characterized in that it is big that volume ratio second developer that makes described first developer stirring transport parts stirs the volume that transports parts.
3. according to the developing apparatus of putting down in writing in the claim 2, it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, and it is big that first developer stirs the axial region diameter of axle that the axial region diameter of axle that transports parts transports parts than the stirring of second developer.
4. according to the developing apparatus of putting down in writing in the claim 2, it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, and it is thick that first developer stirs the blade part that the blade part that transports parts transports parts than the stirring of second developer.
5. according to the developing apparatus of putting down in writing in the claim 2, it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, first developer stirs the blade part that transports parts and is provided with some blades, described some blades have same pitch, and it is many that the number of blade that parts are transported in the stirring of first developer is transported parts than the stirring of second developer.
6. according to the developing apparatus of putting down in writing in the claim 1, it is characterized in that, described first developer stirs and transports parts and second developer and stir and transport parts and be made of axial region and blade part, and first developer stirs the developer travelling speed of transporting parts, and to stir the developer travelling speed of transporting parts than second developer slow.
7. according to the developing apparatus of record in the claim 6, it is characterized in that the pitch that described first developer stirs the blade part that transports parts is littler than the pitch that second developer stirs the blade part that transports parts.
8. according to the developing apparatus of record in the claim 6, it is characterized in that, stir the blade part that transports parts at described first developer and have otch.
9. according to the developing apparatus of record in the claim 6, it is characterized in that, stir to transport to be provided with on the parts at described first developer and stir the parallel plate-shaped member of axial region that transports parts with described first developer.
10. cartridge processing comprises at least:
Picture mounting body;
The development means are to the image development on the described picture mounting body;
Described picture mounting body and the supporting of development means are one, and the image forming device body loading and unloading freely relatively; It is characterized in that:
Use among the described claim 1-9 any described developing apparatus as described development means.
11. an image processing system comprises:
Charging facility makes that picture mounting surface is charged;
Sub-image forms means, is used for forming electrostatic latent image on described picture mounting body;
The development means to described latent electrostatic image developing, make it become the toner picture; It is characterized in that:
Use the cartridge processing described in any described developing apparatus among the described claim 1-9 or the described claim 10, as described development means.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP341895/04 | 2004-11-26 | ||
| JP2004341895 | 2004-11-26 | ||
| JP250836/05 | 2005-08-31 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100020413A Division CN101470389B (en) | 2004-11-26 | 2005-11-25 | Developing device, treating cartridge with said treating cartridge and image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1782914A CN1782914A (en) | 2006-06-07 |
| CN100465809C true CN100465809C (en) | 2009-03-04 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101268808A Active CN100465809C (en) | 2004-11-26 | 2005-11-25 | Developing device, treating cartridge with said treating cartridge and image forming device |
| CN2009100020413A Active CN101470389B (en) | 2004-11-26 | 2005-11-25 | Developing device, treating cartridge with said treating cartridge and image forming device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100020413A Active CN101470389B (en) | 2004-11-26 | 2005-11-25 | Developing device, treating cartridge with said treating cartridge and image forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN100465809C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5915573B2 (en) * | 2013-03-22 | 2016-05-11 | 富士ゼロックス株式会社 | Developing device and image forming apparatus |
| JP7131151B2 (en) * | 2018-07-12 | 2022-09-06 | 富士フイルムビジネスイノベーション株式会社 | Developing device, image forming device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5617191A (en) * | 1994-12-16 | 1997-04-01 | Ricoh Company, Ltd. | Toner conveyor roller and image forming apparatus having the same |
| US5625440A (en) * | 1994-09-09 | 1997-04-29 | Ricoh Company, Ltd. | Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering |
| JPH10207201A (en) * | 1997-01-23 | 1998-08-07 | Ricoh Co Ltd | Two-component developing device |
| US5819145A (en) * | 1995-07-31 | 1998-10-06 | Ricoh Company, Ltd. | Image forming device for forming a uniform toner layer on a developing roller |
-
2005
- 2005-11-25 CN CNB2005101268808A patent/CN100465809C/en active Active
- 2005-11-25 CN CN2009100020413A patent/CN101470389B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5625440A (en) * | 1994-09-09 | 1997-04-29 | Ricoh Company, Ltd. | Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering |
| US5617191A (en) * | 1994-12-16 | 1997-04-01 | Ricoh Company, Ltd. | Toner conveyor roller and image forming apparatus having the same |
| US5819145A (en) * | 1995-07-31 | 1998-10-06 | Ricoh Company, Ltd. | Image forming device for forming a uniform toner layer on a developing roller |
| JPH10207201A (en) * | 1997-01-23 | 1998-08-07 | Ricoh Co Ltd | Two-component developing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101470389B (en) | 2011-07-27 |
| CN101470389A (en) | 2009-07-01 |
| CN1782914A (en) | 2006-06-07 |
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