CN101833266B - Developing device, processing cartridge and image forming device - Google Patents
Developing device, processing cartridge and image forming device Download PDFInfo
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- CN101833266B CN101833266B CN200910128827A CN200910128827A CN101833266B CN 101833266 B CN101833266 B CN 101833266B CN 200910128827 A CN200910128827 A CN 200910128827A CN 200910128827 A CN200910128827 A CN 200910128827A CN 101833266 B CN101833266 B CN 101833266B
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Abstract
The invention provides a developing device, a processing cartridge and an image forming device. Even if two contact parts are arranged over the center of a developer carrier, a developer is not reserved and extruded between the contact parts, the developer is not solidified on the contact parts or the developer carrier, the developer powder pressure is uniform in the length direction, and a uniform developer thin layer can be formed on the developer carrier. A first contact part (27) and a second contact part (28) are arranged sequentially opposite to a supply position of a developing roll (232) for supplying a color toner to a photoreceptor (21) and along the direction opposite to the moving direction of the color toner, so that the contact parts can contact the surface of the developing roll (232) over the radial center of the developing roll (232), and the contact pressure relative to the developing roll (232) caused by the second contact part (28) is smaller than that relative to the developing roll (232) caused by the first contact part (27).
Description
Technical field
The present invention relates to be used for the developing apparatus of the image processing system of electrofax mode.
Background technology
The developing apparatus that is used for the image processing system of electrofax mode comprises that developer carrier puts body and contact component.
It is the so-called developer roll or the cover etc. that develops that developer carrier is put body, and it makes the developer that is made up of toner adhere to, and makes this developer that adheres to be transported on the photoreceptor by magnetic force or static.This developer carrier is put body with photoreceptor contact condition configuration or near photoreceptor but discontiguous state configuration.
Contact component is tabular or roller shape parts, is configured to put body with developer carrier and contacts, and puts on the body developer thin layer that forms homogeneous at developer carrier, or makes the developer frictional electrification, or removes the contrary electric toner of band, has used for various applications.
As the developing apparatus that is provided with this contact component, for example can enumerate following developing apparatus:
Around the toner holding member of putting body as developer carrier; Below toner holding member center; Be provided with and be used to make the limiting part (contact component) of developer layer thin layerization, along the gyratory directions of toner holding member, at the upstream side of limiting part; And below toner holding member center, be provided with the turning circle tubular parts (contact component) (with reference to patent documentation 1) that are used to promote the developer layer frictional electrification.
The charged restriction of developer that the circular arc spring is constituted is coated with the top that parts (contact component) are arranged on the developer roll center; Along the developer roll gyratory directions; Become developer roll right-hand of the charged restriction of this developer coating parts upstream side, be provided with toner powder pressure-controlled parts (contact component) (with reference to patent documentation 2).
Above the developer roll center that is used for developer is transported to photoreceptor; Be provided with the toner charged roller (contact component) that makes that toner is charged; Along the developer roll gyratory directions; At the upstream side of this toner charged roller, and above the developer roll center, be provided with and be used to make the elastic scraper (contact component) (for example with reference to patent documentation 3-5) of developer layer thin layerization.
The toner limiting part (contact component) that will be used to limit the developer bed thickness is located at the top at development cover center; Along the cover gyratory directions that develops; Be positioned at the top at center of development cover or the developer roll in toner limiting part downstream; Be provided for reclaiming band and reclaim roller (contact component) (for example with reference to patent documentation 6,7) against the contrary electric toner of the band of the toner of electricity.
The toner of the contrary electricity of so-called band is meant the toner of band and the electric charge of regular charged polarity antipolarity.Be prone to take place in the charged monocomponent toner of toner homogeneous being difficult to make, become and cause non-image image blurring, or the reason of image deflects such as literal splash.In the device of patent documentation 6,7, be provided with the contact component that is used for putting the contrary electric toner of body recovery band from developer carrier.
In the developing apparatus of above-mentioned technology in the past, put body around developer carrier, generally be provided with the contact component of two used for various applications at least.
[patent documentation 1] spy opens clear 63-243981 communique
[patent documentation 2] spy opens flat 10-133473 communique
[patent documentation 3] spy opens the 2002-023432 communique
[patent documentation 4] spy opens the 2003-195559 communique
[patent documentation 5] spy opens the 2004-138644 communique
[patent documentation 6] spy opens flat 08-254894 communique
[patent documentation 7] spy opens the 2001-281986 communique
There is following problem points in the developing apparatus of above-mentioned patent documentation 1-7.
In patent documentation 2,4,5,6,7; In view of two contact components are located at the top that developer carrier is put the body center, and do not put down in writing the contact pressure that two contact components are put body to developer carrier, developer can be detained between the contact component; Developer therebetween is squeezed; Developer is cemented in contact component or developer carrier is put on the body, and the powder of the developer that perhaps is detained is pressed in the length direction heterogeneity, probably puts the developer thin layer that can not form homogeneous on the body at developer carrier.
In patent documentation 1,3, contact component is located at the below that developer carrier is put the body center, constitute developer and move towards the top from the below, move on the photoreceptor.Therefore, needn't worry that developer is trapped between two contact components, it is little to produce above-mentioned defective mode possibility.
But, common visualization way, developer carrier is put the gyratory directions of body and photoreceptor for contrary revolution, relatively contact component is located at the top person that developer carrier is put the body center, and the gyratory directions of photoreceptor is opposite.Certainly, if the gyratory directions of photoreceptor is opposite, then for example the gyratory directions of other rotating constituting bodies such as intermediate transfer belt becomes on the contrary, automatically determines the carriage direction of paper.
Therefore, for example, hope that printing surface down; Be discharged to the front side occasion from the plant equipment inboard, in patent documentation 2,4,5,6,7, the configuration of each constituting body in the device is no problem; But in patent documentation 1,3, the paper-delivering path also pattern of wants becomes complicated for making the paper counter-rotating, constituting.Therefore, different according to image processing system, can not adopt sometimes contact component is located at the formation of putting the body central lower at developer carrier.
Summary of the invention
The present invention puts forward in order to address this is that; First purpose of the present invention is, developing apparatus is provided, cartridge processing and image processing system; Even said developing apparatus has two contact components are located at the necessity that developer carrier is put top, body center; Do not worry that also developer is trapped between the contact component, developer therebetween is squeezed, and developer is cemented in contact component or developer carrier is put on the body; The powder of the developer that perhaps is detained is pressed in the length direction heterogeneity, puts the developer thin layer that can not form homogeneous on the body at developer carrier.
Second purpose of the present invention is, developing apparatus, cartridge processing and the image processing system of eliminating image deflects such as image blurring or literal splash when developing are provided.
To achieve these goals, the present invention proposes following technical scheme:
(1) a kind of developing apparatus makes developer carrier put the outer peripheral face of putting body at the developer carrier of the circular shaft shape that is set up in parallel with photoreceptor, makes the contained developer of putting put side shifting on the body at said developer carrier, supplies with to said photoreceptor, it is characterized in that:
Put body is supplied with supply position from said developer to photoreceptor from said developer carrier relatively; Along with the moving direction reverse direction of developer; Order is provided with first contact component; Second contact component; The surface that the said developer carrier that makes said first contact component and second contact component to contact to be positioned at said developer carrier to put the radial center top of body is put body, simultaneously, it is little to set the contact pressure that said relatively developer carrier that contact pressure that the said relatively developer carrier that makes said second contact component cause puts body causes than said first contact component puts body.
(2) in above-mentioned (1) described developing apparatus, it is characterized in that:
Said first contact component and second contact component are put axon to extension along said developer carrier, form tabular.
(3) in above-mentioned (2) described developing apparatus, it is characterized in that:
Said second contact component is put the lower edge of the contact site of body from conduct and said developer carrier, separates needed interval, and being provided with can be through the through port of said developer.
(4) in above-mentioned (3) described developing apparatus, it is characterized in that:
Said through port is provided with a plurality of.
(5) in above-mentioned (1)-(4), in each described developing apparatus, it is characterized in that:
Said first contact component and second contact component leave distance 1mm at least.
(6) in above-mentioned (1)-(5), in each described developing apparatus, it is characterized in that:
Said second contact component is applied bias voltage, put between the body at said second contact component and said developer carrier, forming charged polarity is the electric field of the toner of antipolarity towards said second contact component attraction direction.
(7) a kind of cartridge processing is characterized in that, comprising:
Each described developing apparatus in above-mentioned (1)-(6);
Said photoreceptor or make a certain side among the charged charging part of this photoreceptor or said photoreceptor and said charging part both sides.
(8) a kind of image processing system of electrofax mode is characterized in that:
Be provided with above-mentioned (7) described cartridge processing.
(9) a kind of image processing system of electrofax mode is characterized in that:
Be provided with each described developing apparatus in above-mentioned (1)-(6).
Effect of the present invention is described below.
According to the present invention; Developing apparatus can be provided; Cartridge processing and image processing system; Even have two contact components are located at the necessity that developer carrier is put body center top, can eliminate also that developer is trapped between the contact component, extruding is in that therebetween developer, developer is cemented in contact component or developer carrier is put on the body or the powder of the developer that is detained is pressed in the length direction heterogeneity, can not puts the developer thin layer that forms homogeneous on the body at developer carrier.Developing apparatus, cartridge processing and the image processing system of image deflects such as image blurring or literal splash when eliminate developing can be provided in addition.
Description of drawings
Fig. 1 is that the indulging of image processing system summary that expression example of the present invention relates to cut outboard profile;
Fig. 2 is the vertical outboard profile that cuts of cartridge processing;
Fig. 3 is the stereographic map of second contact component that relates to of embodiment 1;
Fig. 4 is the stereographic map of second contact component that relates to of embodiment 2;
Fig. 5 is the stereographic map of second contact component that relates to of embodiment 3;
Fig. 6 is the stereographic map of second contact component that relates to of embodiment 4;
Fig. 7 is the table of expression experimental result.
Symbol description is following:
The 1-image processing system
The 11-paper feeding cassette
The 12-sheet feed section
The 121-paper feed roller
The 122-separating component
The 13-registration roller
The 14-exposure device
The 15-transfer roll
The 16-fixing device
The 17-exit roller
18-row paper platform
The 2-cartridge processing
2a-cartridge housing
The 2b-partition wall
The 21-photoreceptor
The 22-charging roller
The 23-developing apparatus
The 231-receiving room
The 232-developer roll
The 233-donor rollers
The 234-developing room
The 235-separating part
236-stirs/transports parts
The 236a-revolving shaft
The 236b-blade
The 236c-blade
The 237-synchronization section
237a-first bar
237b-second bar
The 24-cleaning device
241-toner recoverer
The 242-rubber flap
243-toner adverse current prevents material
The 25-cam
The 26-detection part
The 261-auxiliary section
The 262-check-out console
27-first contact component
The 27a-lower edge
28-second contact component
The 28a-leading section
The 28b-lower edge
The 281-through port
The 282-intermediate plate
The 283-upper plate
Embodiment
Other purpose and characteristic of the present invention, the explanation according to reference to the example of the hereinafter of accompanying drawing will become clear and definite.
Specify with reference to the accompanying drawings and relate to example of the present invention.In following example, though to inscape, kind, combination, shape is installed relatively to wait and has been done various qualifications,, these are only given an example, and the present invention is not limited thereto.
The image processing system that example illustration of the present invention is made up of so-called laser printer, it is provided with processing unit, forms image according to the view data that sends from computing machine etc. at paper.Before the developing apparatus 23 that specifies as characteristic of the present invention, basic comprising portion that the formation of key diagram picture relates to and basic image form action.
The image processing system 1 that example of the present invention relates to is as shown in Figure 1, comprises paper feeding cassette 11, sheet feed section 12, and registration roller 13, cartridge processing 2, exposure device 14, transfer roll 15, fixing device 16, exit roller 17, row's paper platform 18 constitutes.
Paper feeding cassette 11 is accumulated paper in advance, releasably is arranged on the interior bottom of framework of image processing system 1.
Registration roller 13 makes the paper standby that sheet feed section 12 is seen off, sees off in the time that sets.
Charging roller 22 makes photoreceptor 21 surface chargings, be set to photoreceptor 21 surfaces among the highest part join, with photoreceptor 21 revolutions.
The latent electrostatic image developing that developing apparatus 23 will be formed on the photoreceptor 21 is the toner picture, along the gyratory directions of photoreceptor 21, is configured in the downstream of charging roller 22, the left of photoreceptor 21.The detailed structure of this developing apparatus 23 is the literary composition explanation in the back.
The toner adverse current prevents that material 243 from being film-like members; The feasible toner that is scraped by rubber flap 242 is not around the downside of going into photoreceptor 21; This toner adverse current prevent material 243 from the diapire that forms toner recoverer 241 towards horizontal expansion, make that the side face with the photoreceptor 21 of rubber flap 242 front ends below joins.
Exposure device 14 is located at top in the framework of image processing system 1, photoreceptor 21 side faces that charges by charging roller 22 is shone scan light, the formation electrostatic latent image according to the view data that sends from computing machine etc.
Transfer roll 15 is located at photoreceptor 21 belows, and with photoreceptor 21 subtends, paper is through between this transfer roll 15 and the photoreceptor 21, make be formed on toner on the photoreceptor 21 as static printing on paper.
16 pairs of transfer printings of fixing device have the paper of toner picture to apply heat and pressure, make the toner of the not photographic fixing on the paper as melting and solidification, and photographic fixing is on paper.
Row's paper platform 18 is located at the top surface portion of image processing system 1, accumulates the paper that exit roller 17 is seen off.
In addition, though diagram not, to row's paper platform 18, the passage that transports through paper forms with a plurality of guiding parts from sheet feed section 12.
The elemental motion of the image processing system 1 that such this example that constitutes relates to is described.
Exposure device 14 forms electrostatic latent image towards the scan light of charged photoreceptor 21 surface irradiations according to view data on photoreceptor 21 surfaces.Developing apparatus 23 make this electrostatic latent image as toner as visual.
Before and after above-mentioned action, sheet feed section 12 many paper that separate paper feeding cassette 11 begin to transport paper.
Registration roller 13 be formed on photoreceptor 21 on toner picture mobile consistent, see paper off towards transfer position.Transfer roll 15 looks like the toner on the photoreceptor 21 to be transferred on the paper that is positioned at transfer position.
16 pairs of transfer printings of fixing device have the paper of toner picture to apply heat and pressure, make toner as the fusion photographic fixing on paper.Exit roller 17 makes and the paper of toner as the fusion photographic fixing is discharged on the paper platform 18.
Below, specify developing apparatus 23 as characteristic of the present invention.
The developing apparatus 23 of this example is provided with receiving room 231, developer roll 232, donor rollers 233, developing room 234.Said receiving room 231 is taken in the monocomponent toner that is made up of toner; Said developer roll 232 is put body as developer carrier and is carried and put the toner that the electrostatic latent image on the photoreceptor 21 is developed; Transport; Said donor rollers 233 is supplied with toner as supply part to developer roll 232, between receiving room 231 and developing room 234, forms separating part 235.
Separating part 235 is the such shape in mountain, thus, developing apparatus 23 is divided into receiving room 231 and 234 two chambers of developing room.
Developing apparatus 23 contacts single component development, on developer roll 232, forms toner layer, contacts with photoreceptor 21 through transporting the toner layer that makes on the developer roll 232, makes latent electrostatic image developing on the photoreceptor 21.
In receiving room 231, be provided with and stir/transport parts 236, stir the toner in the developing apparatus 23, cross separating part 235, mechanically be transported to developing room 234, supply with donor rollers 233 as supply part through the revolution of stirring/transporting parts 236.
This donor rollers 233 is formed by foamed polyurethane etc., has pliability, becomes the structure that is prone to keep toner with 50-500 μ m diameter unit.In addition, the JIS-A hardness of donor rollers 233 is made as lower 10-30 °, can join by homogeneous with developer roll 232.
As stated, the developing apparatus 23 of this example clips separating part 235 and forms receiving room 231 and 234 two chambers of developing room.
In receiving room 231, be provided with the stirring of stirring/transporting toner/transport parts 236, and synchronization section 237, in developing room 234, be provided with detection part.
Stir/transport parts 236 and comprise revolving shaft 236a, and be located at blade 236b and the 236c on this revolving shaft 236a.Mounting cam 25 on the end on the revolving shaft 236a.Revolving shaft 236a is activated the driving force of motor (not having diagram) and turns round towards inverse clock.Stir/transport parts 236 revolutions through making, to stir the monocomponent toner that constitutes by toner in the receiving room 231, to make it charged, toner is transported to developing room 234.
In addition,, be preferably, coat coating or coating on the surface of developer roll 232 for steady qualityization between making for a long time.As coating or coating material, can enumerate the silicon based material, teflon (login trade mark) based material etc.Silicon based material toner charging property is good, and teflon based material release property is good.In order to obtain electric conductivity, also can make it contain conductive materials such as carbon black.The preferred 5-50 μ of coating thickness m.If surpass this scope, undesirable condition such as be prone to split sometimes.
But the toner layer heterogeneity on the developer roll 232 is adhered to (1-3mg/cm quite superfluously at this moment
2).
And, use the developing apparatus 23 of the monocomponent toner that constitutes by toner, owing to there is not carrier, be difficult to make that the toner homogeneous is charged, be prone to take place to be with and the contrary electric toner of the what is called band of regular charged polarity opposite polarity.Therefore, superfluous ground is attached to the toner on the developer roll 232, and negative polarity toner and positive polarity toner are mixed in.
When to the image development on the photoreceptor 21, the contrary electric toner of this band can cause at non-image parts of images fuzzy, or image deflects such as literal splash, need remove.
So, in this example, two contact components are set toner bed thickness homogeneous in order to remove the contrary electric toner of said band and to make.
These two contact components are by being used to make first contact component 27 of toner bed thickness homogeneous, and second contact component 28 that is used to remove the contrary electric toner of band constitutes.Supply with the supply position of toner relatively to photoreceptor 21 from developer roll 232; Promptly; The contact position of toner layer on the developer roll 232 and photoreceptor 21; Along with developer roll 232 on the moving direction reverse direction of toner be counterclockwise, order is provided with first contact component 27 and second contact component 28 (with reference to Fig. 2).
The rear portion of second contact component 28 is sandwiched between partition wall 2b and the intermediate plate 282 and is being supported; Said partition wall 2b is positioned at the top of the developer roll 232 of the cartridge housing 2a that forms developing room 234, makes the lower edge 28b of this second contact component 28 contact with the surface of the developer roll 232 of the radial center top of developer roll 232.In addition, the lower edge 28b of this second contact component 28 is towards the upstream side along gyratory directions of developer roll 232.
The rear portion of first contact component 27 is sandwiched between intermediate plate 282 and the upper plate 283 and is being supported, and the lower edge 27a of the contact component 27 of winning is contacted with the surface of the developer roll 232 of the radial center top of developer roll 232.In addition, the lower edge 27a of this first contact component 27 is towards the upstream side along gyratory directions of developer roll 232.
Separate first contact component 27 and second contact component 28 through intermediate plate 282, its distance of minimum separation is 1mm.This be because, if not enough 1mm, toner powder between first contact component 27 and second contact component 28 is pressed and is become big, because of this pressure, along the length direction of developer roll 232, the part transports that quantitative change is big, it is irregular that color-tone concentration partly takes place, or take place image blurring.
As stated, second contact component 28 separates needed interval from the lower edge 28b of conduct with the contact site of developer roll 232, and being provided with at least one can be through the through port 281 of toner.Were it not for through port 281, then the toner between first contact component 27 and second contact component 28 can not be discharged, and therefore, needs at least one through port 281.A plurality of through port 281 occasions are set, and as the width between the through port 281, preferred 0.3-2mm is more preferably 0.5-1mm.
Relation between the contact pressure of the relative developer roll 232 that the contact pressure of the relative developer roll 232 that second contact component 28 causes and first contact component 27 cause is set at: make that the contact pressure of the relative developer roll 232 that the contact pressure of the relative developer roll 232 that second contact component 28 causes causes than first contact component 27 is little.
If the contact pressure of the relative developer roll 232 that second contact component 28 causes is bigger than the contact pressure of the relative developer roll 232 that first contact component 27 causes; Then because of the contact component in downstream promptly first contact component 27 make the toner layer that forms homogenization at upstream side become heterogeneityization; The result; Alongst, problems such as coming off of image blurring, literal splash, shadow tone take place in local upwards of movement or electriferous state variation; Through making the contact pressure of the relative developer roll 232 that the contact pressure of the relative developer roll 232 that second contact component 28 causes causes than first contact component 27 little, can avoid above-mentioned undesirable condition.
Be preferably, the contact pressure of the relative developer roll 232 that second contact component 28 causes be the relative developer roll 232 that causes of first contact component 27 contact pressure 1/21～1/6.In addition, be preferably, the contact pressure of the relative developer roll 232 that first contact component 27 causes is 20～100N/m, is more preferably 30～60N/m.
In addition, second contact component 28 is applied bias voltage, between second contact component 28 and developer roll 232, forming charged polarity is the toner of antipolarity promptly attracts directions towards second contact component 28 with the toner of contrary electric charge electric field.
Because of potential difference (PD) attracts the toner of band against electric charge, flow into the toner of being with contrary electric charge at first contact component 27 in the time of preventing to form toner layer.Therefore, can form the toner layer of band identical polar.As potential difference (PD), be preferably, absolute value 30V～400V is more preferably, 50V～200V.In addition, the function of second contact component 28 also have the subband electric work can, first contact component 27 after this forms toner layers, separates through function, can realize that toner is charged and form the layer of homogeneous.
Metals such as this first contact component 27 and second contact component, 28 preferred SUS304, thickness is 0.1-0.15mm.Except metal, also can used thickness be the higher resin material of hardness ratio such as elastomeric material or silicones of the urethane rubber etc. of 1-2mm.Especially, owing to apply bias voltage, second contact component, 28 preferable alloy, even but in above-mentioned resin material occasion, can low resistanceization through sneaking into carbon black etc., therefore, connect grid bias power supply, and between the developer roll 232, can form electric field.
In the developing apparatus 23 of above-mentioned formation, at first,,, simultaneously, toner is carried out auxiliary charged Yi Bian remove the toner of the contrary electric charge of band Yi Bian second contact component 28 roughly makes the toner layer homogeneous.Then, the toner through second contact component 28 is the thickness that sets by first contact component, 27 homogeneous, is transported to above-mentioned supply position.At this moment, be trapped in toner between first contact component 27 and second contact component 28 is discharged to second contact component 28 through the through port 281 that is located at second contact component 28 the place ahead gradually.
Below, using above-mentioned first contact component 27, second contact component 28 of Fig. 3 is as embodiment 1; Second contact component 28 that uses Fig. 4 is as embodiment 2; Second contact component 28 that uses Fig. 5 is as embodiment 3, and second contact component 28 that uses Fig. 4 is as embodiment 4, with condition (HH shown in following; LL) make an experiment, the result is illustrated in Fig. 7.
The image recording of print area rate 5% is 3P/J
The HH environment: 27 ℃, 80%RH
The LL environment: 10 ℃, 15%RH
The evaluation of the image blurring degree in the table (the dirty dirty degree of so-called background) is the image recording through printing 5%, and according to the grade sample, the naked eyes judgement has or not non-image background dirt dirty, estimates.
Can know that from Fig. 7 comparative example 1,2 does not all have second contact component 28 (restriction in advance), and image blurring or longitudinal stripe takes place.In contrast, embodiment 1-4 is not with the image blurring or longitudinal stripe that causes against the toner of electric charge because of increasing.
This be because; Be provided with developer carrier and put two contact components that body contacts; Simultaneously, make that their relation of contact pressure is suitable, and on second contact component 28, through port 281 is set; Through making the position relation of this through port 281 and first contact component 27 make clear, on developer roll 232, stably form the toner layer of homogeneous.
Have again; Through second contact component 28 is applied electrical bias; The toner of the contrary electric charge of electricity select tape; Reclaim the toner of the contrary electric charge of band in advance at second contact component 28, the toner of the contrary electric charge of band can not be transported to the developing regional with photoreceptor 21 subtends, image deflects such as image blurring or longitudinal stripe in the time of preventing to develop.
Like this; Even the image processing system 1 that this example relates to has two contact components are located at the necessity that developer carrier is put body center top, can eliminate also that developer is trapped between the contact component, extruding is in that therebetween developer, developer is cemented in contact component or developer carrier is put on the body or the powder of the developer that is detained is pressed in the length direction heterogeneity, can not puts the developer thin layer that forms homogeneous on the body at developer carrier.
Meanwhile, can prevent image blurring or image deflects such as literal splash.
Above-mentioned each example only is the example of specializing that is suitable for embodiment of the present invention, but not comes in view of the above technical scope of the present invention is carried out determinate explanation.That is, under the situation that does not break away from spirit of the present invention or purport, the present invention can implement with various other forms.
Claims (9)
1. developing apparatus makes developer carrier put the outer peripheral face of putting body at the developer carrier of the circular shaft shape that is set up in parallel with photoreceptor, makes the contained developer of putting put side shifting on the body at said developer carrier, supplies with to said photoreceptor, it is characterized in that:
Put body is supplied with supply position from said developer to photoreceptor from said developer carrier relatively; Along with the moving direction reverse direction of developer; Order is provided with first contact component; Second contact component; The surface that the said developer carrier that makes said first contact component and second contact component to contact to be positioned at said developer carrier to put the radial center top of body is put body, simultaneously, it is little to set the contact pressure that said relatively developer carrier that contact pressure that the said relatively developer carrier that makes said second contact component cause puts body causes than said first contact component puts body.
2. according to the described developing apparatus of claim 1, it is characterized in that:
Said first contact component and second contact component are put axon to extension along said developer carrier, form tabular.
3. according to the described developing apparatus of claim 2, it is characterized in that:
Said second contact component is put the lower edge of the contact site of body from conduct and said developer carrier, separates needed interval, and being provided with can be through the through port of said developer.
4. according to the described developing apparatus of claim 3, it is characterized in that:
Said through port is provided with a plurality of.
5. according to each described developing apparatus among the claim 1-4, it is characterized in that:
Said first contact component and second contact component leave distance 1mm at least.
6. according to each described developing apparatus among the claim 1-4, it is characterized in that:
Said second contact component is applied bias voltage, put between the body at said second contact component and said developer carrier, forming charged polarity is the electric field of the toner of antipolarity towards said second contact component attraction direction.
7. a cartridge processing is characterized in that, comprising:
Each described developing apparatus among the claim 1-6;
Said photoreceptor or make a certain side among the charged charging part of this photoreceptor or said photoreceptor and said charging part both sides.
8. the image processing system of an electrofax mode is characterized in that:
Be provided with the cartridge processing described in the claim 7.
9. the image processing system of an electrofax mode is characterized in that:
Be provided with each described developing apparatus among the claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128827A CN101833266B (en) | 2009-03-12 | 2009-03-12 | Developing device, processing cartridge and image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128827A CN101833266B (en) | 2009-03-12 | 2009-03-12 | Developing device, processing cartridge and image forming device |
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| Publication Number | Publication Date |
|---|---|
| CN101833266A CN101833266A (en) | 2010-09-15 |
| CN101833266B true CN101833266B (en) | 2012-10-10 |
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| JP5405554B2 (en) * | 2011-12-13 | 2014-02-05 | シャープ株式会社 | Image forming apparatus |
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| EP0682296A2 (en) * | 1994-05-12 | 1995-11-15 | Ricoh Company, Ltd | Developing device for an image forming apparatus |
| CN1154496A (en) * | 1995-11-14 | 1997-07-16 | 株式会社理光 | Developing device for image forming apparatus |
| JP2001281986A (en) * | 2000-03-31 | 2001-10-10 | Konica Corp | Developing device and image forming device |
| JP2002023489A (en) * | 2000-07-03 | 2002-01-23 | Seiko Epson Corp | Image forming device |
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2009
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0682296A2 (en) * | 1994-05-12 | 1995-11-15 | Ricoh Company, Ltd | Developing device for an image forming apparatus |
| CN1154496A (en) * | 1995-11-14 | 1997-07-16 | 株式会社理光 | Developing device for image forming apparatus |
| JP2001281986A (en) * | 2000-03-31 | 2001-10-10 | Konica Corp | Developing device and image forming device |
| JP2002023489A (en) * | 2000-07-03 | 2002-01-23 | Seiko Epson Corp | Image forming device |
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| CN101833266A (en) | 2010-09-15 |
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