CN102033459A - Charged roller - Google Patents
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- CN102033459A CN102033459A CN2010105014996A CN201010501499A CN102033459A CN 102033459 A CN102033459 A CN 102033459A CN 2010105014996 A CN2010105014996 A CN 2010105014996A CN 201010501499 A CN201010501499 A CN 201010501499A CN 102033459 A CN102033459 A CN 102033459A
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Abstract
The invention relates to a charged roller. The invention provides the charged roller capable of maintaining the charge characteristic for a long time. The outer periphery of a spindle of the charged roller is provided with at least one conductive rubber elastic layer. The average roughness of ten points of the charged roller in the axial direction is Rz1, the average roughness of ten points of the charged roller in the circumferential direction is Rz2, the average distance between concave and convex parts of the charged roller in the axial direction is Sm1, and the average distance between concave and convex parts of the charged roller in the circumferential direction is Sm2. The surface state of the charged roller satisfies the following formula, and the microhardness of the charged roller is 48-60 DEG. In the formula [1], 1.00<Rz1/Rz2<=2.00, 0<Sm1/Sm2<=1.00, and 11Mum<Rz1.
Description
Technical field
The present invention relates to that photoreceptor etc. for the image processing system that makes electro photography duplicating machine and printer or ink jet type (ト Na one ジ ェ ッ ト formula) duplicating machine and printer etc. has uniform static and the charged roller used.
Background technology
The charged roller of using in the image processing system of electro photography duplicating machine and printer etc. etc. also requires the electric conductivity of regulation except the character that requires not pollute photoreceptor etc.
But, the problem that charged roller in the past has the easy residual toner of photoreceptor (toner) or adheres to external additive.If adhere to external additive etc. easily, then long-term the use causes external additive etc. to adhere in a large number, and resistance change or its deviation take place, and charged characteristic reduces.The charged characteristic reduction then causes the image of image processing system bad.
Therefore, people have proposed the charged roller (with reference to patent documentation 1) that can reduce surfaceness (Rz:10 point mean roughness), make surface smoothing.Also proposed to form on the surface of electric conductivity coating member the charged roller (with reference to patent documentation 2) of the following organic or inorganic particulate of 0.3 μ m sublayer in order to prevent toner and adhering to of external additive thereof.
Even but charged roller also further requires the long-term still retainer belt electrical characteristics of using.
Patent documentation in advance
Patent documentation
Patent documentation 1: TOHKEMY 2000-137369 communique
Patent documentation 2: TOHKEMY 2006-091495 communique
Summary of the invention
The present invention is directed to above-mentioned situation, its problem is to provide the charged roller of retainer belt electrical characteristics for a long time.
The charged roller that solves the solution of the present invention 1 of above-mentioned problem is characterised in that: have in the charged roller of one deck conducting rubber elastic layer at least in the periphery of mandrel (core gold), axial 10 mean roughness of this charged roller are Rz
1, this charged roller 10 mean roughness of circumferencial direction be Rz
2, this charged roller axial concavo-convex equispaced be Sm
1, this charged roller the concavo-convex equispaced of circumferencial direction be Sm
2The time, the surface state of above-mentioned charged roller satisfies following formula, and the microhardness of above-mentioned charged roller (マ ィ Network ロ hardness) is 48～60 °.
[several 1]
1.00＜Rz
1/Rz
2≤2.00
0＜Sm
1/Sm
2≤1.00
Rz
1＞11μm
The solution of the present invention 2 is scheme 1 described charged roller, it is characterized in that this charged roller satisfies following formula:
[several 2]
Rz
1＜34μm
50μm＜Sm
1＜130μm
The charged roller of the solution of the present invention 3 is charged roller of scheme 1 or 2, it is characterized in that, the skin section of above-mentioned conducting rubber elastic layer is provided with the surface treatment liquid that contains isocyanate compound has carried out the surface-treated surface-treated layer.
The solution of the present invention 4 is each charged roller among the scheme 1-3, it is characterized in that, the surface of above-mentioned conducting rubber elastic layer forms by the wet lapping that utilizes water-fast pouncing paper and carry out.
Charged roller of the present invention, make axial surfaceness bigger than the surfaceness of circumferencial direction, and the value than regulation is big, make below the axial concavo-convex concavo-convex equispaced that on average is spaced apart circumferencial direction, be the hardness of regulation simultaneously, thus, toner, external additive are difficult to be caught by recess, and performance is the effect of retainer belt electrical characteristics for a long time.
Description of drawings
Fig. 1 is the brief strabismus map of expression charged roller image of the present invention.
Fig. 2 is the wet lapping situation figure of the charged roller of an embodiment of expression.
Fig. 3 is the surperficial enlarged photograph of the charged roller of sample 1 in the test example 2.
Fig. 4 is the surperficial enlarged photograph of the charged roller of sample 7 in the test example 2.
Fig. 5 is the surperficial enlarged photograph of the charged roller of sample 10 in the test example 2.
Fig. 6 is the surperficial enlarged photograph of the charged roller of sample 13 in the test example 2.
Fig. 7 is the surperficial enlarged photograph of the charged roller of sample 18 in the test example 2.
Fig. 8 is the surperficial enlarged photograph of the charged roller of sample 27 in the test example 2.
Fig. 9 is the surperficial enlarged photograph of the charged roller of sample 28 in the test example 2.
Figure 10 is the surperficial enlarged photograph of the charged roller of sample 29 in the test example 2.
Figure 11 is the surperficial enlarged photograph of the charged roller of sample 40 in the test example 2.
Figure 12 is the surperficial enlarged photograph of the charged roller of sample 41 in the test example 2.
Figure 13 is the surperficial enlarged photograph of the charged roller of sample 42 in the test example 2.
Figure 14 is the surperficial enlarged photograph of the charged roller of sample 43 in the test example 2.
Symbol description
1 charged roller
11 water-fast pouncing papers
12 extract roller
13 backing rolls
14 take up rolls
15 lapping liquids
Embodiment
Charged roller of the present invention does not resemble and the whole roughness in surface is reduced in the past the charged roller, but make axial surfaceness bigger and bigger than the value of regulation than the surfaceness of circumferencial direction, making axial concavo-convex equispaced is below the concavo-convex equispaced of circumferencial direction, be the hardness of regulation simultaneously, thus, toner, external additive are difficult to be caught by recess, for a long time the retainer belt electrical characteristics.
As long as charged roller of the present invention comprises the rubber elastomer with regulation electric conductivity, be not particularly limited, can form by 1 layer also can be more than 2 layers.In addition, can also can surface-treated layer be set in the most surperficial coating that is provided with in the superiors.In a word, the surface of roller is the relation of concavo-convex equispaced of the relation that satisfies the roughness of axial surface roughness and circumferencial direction, axial concavo-convex equispaced and circumferencial direction and the state that axial roughness satisfies defined terms, and the microhardness of roller is 48-60 °.Specifically, axial 10 mean roughness when charged roller are Rz
1, charged roller 10 mean roughness of circumferencial direction be Rz
2, charged roller the axial concavo-convex Sm that on average is spaced apart
1, the concavo-convex equispaced of this charged roller circumferencial direction is Sm
2The time, following formula is satisfied on the surface of roller.
[several 3]
1.00＜Rz
1/Rz2≤2.00
0＜Sm
1/Sm
2≤1.00
Rz
1＞11μm
By forming such surface state, can keep good friction factor and suppress toner under the state of charged characteristic fully, external additive is captured to recess.That is, can under the situation that does not reduce charged characteristic, suppress adhering to of toner, external additive, for a long time the retainer belt electrical characteristics.
The microhardness of charged roller of the present invention is 48-60 °.If the microhardness of charged roller in this scope, then can obtain preferable image when image forms.The microhardness of charged roller is lower than 48 °, and then protuberance breaks, and is subjected to dirtyly easily, and it is bad that image takes place.If microhardness is bigger than 60 °, then Biao Mian protuberance is presented on the image.
In addition, preferred axes to 10 mean roughness Rz
1, circumferencial direction 10 mean roughness Rz
2, axial concavo-convex equispaced Sm
1Satisfy following formula.
[several 4]
Rz
1＜34μm
50μm＜Sm
1＜130μm
Surface state by making charged roller is in above-mentioned scope, and the retainer belt electrical characteristics can suppress adhering to of toner, external additive simultaneously well.If Rz
1Be more than the 34 μ m, then possibly can't obtain enough charged characteristics.
Charged roller further preferably satisfies following formula.
[several 5]
13.7μm≤Rz
1≤27.6μm
53.0μm≤Sm
1≤123.5μm
Excellent charged characteristic be can keep thus, and adhering to of toner, external additive, retainer belt electrical characteristics for a long time suppressed.
Here, adopt accompanying drawing that charged roller of the present invention is described.Fig. 1 is the brief strabismus map of expression charged roller image of the present invention.As shown in Figure 1, charged roller 1 axle 2 is provided with conducting rubber elastic layer 3.The outer peripheral face of this conducting rubber elastic layer 3 forms the recess of the Rack that along the circumferential direction extends by being arranged on the protuberance 4 of the long Rack of circumferencial direction intermittently.That is, the recess that constitutes jog is made of long groove, the formation between protuberance 4 that arranged spaced, circumferencial direction are grown and the protuberance 4 of this long groove.Above-mentioned formula [several 3] expression is provided with the state of the groove of the Rack that along the circumferential direction extends as mentioned above.Here, above-mentioned Rz
1/ Rz
2＞1.00 expressions are provided with the groove of the Rack that along the circumferential direction extends, 0＜Sm
1/ Sm
2The groove of the Rack that≤1.00 expressions are extended vertically is littler than the groove of the Rack that along the circumferential direction extends.Charged roller of the present invention is provided with the recess of the Rack that along the circumferential direction extends, and there is a great difference the concavo-convex equispaced of circumferencial direction according to the difference of measuring part, and concavo-convex equispaced Sm vertically
1The different influence of not tested certain portions." along the circumferential direction " described here is meant with respect to the angle that axially for example is about 45 °-135 °.Described groove need not to form across circumferencial direction, can disconnect with length to a certain degree, preferably is arranged to groove and intersects with groove.By the groove that along the circumferential direction extends is set, toner etc. slip, and are difficult to the surface attached to charged roller.In addition, though toner attached to recess, with the contact portion of photoreceptor etc., the relative area of the attachment portion of toner etc. is little, therefore can make uniform chargeds such as photoreceptor.In addition, if Rz
1/ Rz
2Be lower than 1, the state of the groove of the Rack that extends vertically then form to be set, use then toner etc. in a large number attached to recess for a long time, charged characteristic reduces, and produces band on the image when image forms.And if Rz
1/ Rz
2Bigger than 2, concavo-convex excessive when then image forms, it is inhomogeneous that discharge takes place, and it is bad that image takes place.In addition, if Rz
1Be below the 11 μ m, then can't obtain effect of sufficient, adhere to toner etc. easily.
In above-mentioned [several 3]-[several 5], by to 10 axial mean roughness Rz
1With axial concavo-convex equispaced Sm
1Stipulate, stipulated the height of axial protuberance, width of axial protuberance etc.
In order to form above-mentioned surface state, for example preferably when mixing roll, implement the wet lapping that utilizes water-fast pouncing paper to carry out.At this moment, the surfaceness that can grind axially is bigger than the surfaceness of circumferencial direction.
Here, wet lapping is to use for example sand paper of water tolerance of water-fast pouncing paper, it supplied with lapping liquid on one side under the state of roller rotation roller be in contact with it grind on one side.Specifically as shown in Figure 2, water-fast pouncing paper 11 is rolled up to backing roll (being subjected to け ロ one Le) 13 by extracting roller (the volume I goes out ロ one Le) 12, be rolled onto on the take up roll 14, on water-fast pouncing paper 11, supply with lapping liquid 15 simultaneously, making under the state that rotates with the charged roller 1 of backing roll 13 relative configurations, it is contacted with water-fast pouncing paper 11.Under this state, grind, then obtain above-mentioned surface state while charged roller 1 is moved vertically.That is, the concavo-convex of the regulation of along the circumferential direction extending is set, makes axial surfaceness bigger, make below the axial concavo-convex concavo-convex equispaced that on average is spaced apart circumferencial direction than the surfaceness of circumferencial direction.
Also can implement to carry out dry grinding by grinding tool (grinding whetslate) before the wet lapping that utilizes wet-strong paper to carry out as required.Dry grinding for example carries out following the moving vertically with the grindstone contact edge of the state that makes the roller rotation specifically.
Here, conducting rubber elastic layer of the present invention is to add to give the material of electric conductivity in rubber substrate, and being shaped and vulcanizing obtains.Rubber substrate can be polyurethane, epichlorohydrin rubber, nitrile rubber (NBR), styrene rubber (SBR), chloroprene rubber etc.Polyurethane preferred especially ether system or ester are the polyurethane that polyvalent alcohol and isocyanate reaction obtain, and especially preferably using ether is polyurethane.Ether is that to be preferably based on ether be the polyvalent alcohol of polyvalent alcohol and obtain, the so-called casting type polyurethane of polyisocyanates reaction to polyurethane.Be because this can reduce the cause of compression set.
For example have with the isocyanates of polyol reaction: 2,4-toluene diisocyanate (TDI), 4,4 '-methyl diphenylene diisocyanate (MDI), PPDI (PPDI), 1,5-naphthalene diisocyanate (NDI), 3,3-dimethyl diphenyl-4,4 '-diisocyanate (TODI) and two ends have modification body, condensate of prepolymer of these isocyanates etc. etc.
The material of giving electric conductivity can be the material of giving electron conduction of carbon black, metal powder etc., give the material of ionic conductivity or both mix use with them.The material of giving ionic conductivity has: organic salt, inorganic salts, metal complex, ionic liquid etc.Organic salt, inorganic salts have: lithium perchlorate, quaternary ammonium salt, sodium trifluoroacetate etc.Metal complex has: iron halide-ethylene glycol etc.Specifically, can be No. 3655364 described material of communique of Japan's special permission.Ionic liquid can be to be under the room temperature to be also referred to as the normal temperature fuse salt by the fuse salt of liquid, refers in particular to fusing point and be below 70 ℃, preferred fuse salt below 30 ℃.Can be the described material of TOHKEMY 2003-202722 communique specifically.
Charged roller of the present invention can be provided with surface-treated layer, coating after grinding, preferably implement surface treatment, the friction factor and the charged characteristic that make it keep surface state and have regulation.By carrying out surface treatment, the axial concavo-convex number of roller has the tendency of increasing, but final surface state still will keep above-mentioned state.
Surface-treated layer is the conducting rubber elastic layer is immersed in the surface treatment liquid or by coating surface treating fluids such as sprayings, its dry solidification is formed.With the skin section of surface treatment liquid infiltration, form surface-treated layer at the conducting rubber elastic layer.
Here, surface treatment liquid is isocyanate prepolymer composition at least to be dissolved in the organic solvent obtain.
Isocyanate prepolymer composition contained in the surface treatment liquid has: 2,6-toluene diisocyanate (TDI), 4,4 '-methyl diphenylene diisocyanate (MDI), PPDI (PPDI), 1,5-naphthalene diisocyanate (NDI) and 3,3-dimethyl diphenyl-4, the isocyanate compound of 4 '-diisocyanate (TODI) etc., and above-mentioned condensate and modification body etc.It can also be the prepolymer that forms by polyvalent alcohol and isocyanates.
Can contain the polyethers based polymer in the surface treatment liquid.Here, the polyethers based polymer preferably is dissolvable in water organic solvent, also preferably has reactive hydrogen, can carry out chemical bonding with the isocyanate compound reaction.
Preferred polyethers based polymer with reactive hydrogen for example has epichlorohydrin rubber.Epichlorohydrin rubber described here is meant the not epichlorohydrin rubber of sulfided state.Epichlorohydrin rubber can make surface-treated layer have elasticity when having electric conductivity, and is therefore preferred.The epichlorohydrin rubber end has reactive hydrogen (hydroxyl), also preferably has hydroxyl, allyl isoreactivity hydrogen in the unit.Epichlorohydrin rubber can be chloropropylene oxide homopolymer, chloropropylene oxide-ethylene oxide copolymer, chloropropylene oxide-allyl glycidyl ether multipolymer, chloropropylene oxide-oxirane-allyl glycidyl ether terpolymer or derivatives thereof etc.
Other preferred polyethers based polymer with reactive hydrogen has: have hydroxyl or allylic polymkeric substance, polyvalent alcohol, glycol etc. are for example arranged.As above-mentioned polyethers based polymer, the group that possesses the tool reactive hydrogen with two ends is compared, the preferred group that only possesses the tool reactive hydrogen at an end.In addition, preferred number average molecular weight is 300-1000.This can make surface-treated layer have elasticity.Above-mentioned polyethers based polymer for example has: polyalkylene glycol mono methyl ether, poly alkylene glycol dimethyl ether, allylation polyethers, polyalkylene glycol type dibasic alcohol (Port リ ァ Le キ レ Application グ リ コ one Le ジ ォ one Le), polyalkylene glycol type trihydroxy alcohol (Port リ ァ Le キ レ Application グ リ コ one Le ト リ ォ one Le) etc.
As mentioned above, by add the polyethers based polymer in surface treatment liquid, the flexibility of surface-treated layer, intensity are improved, the result can not make surface tears such as the surface abrasion of needed roller or contacted photoreceptor.
Can also contain the polymkeric substance that is selected from acrylic acid fluorine based polymer (ァ Network リ Le Off ッ prime system Port リ マ one) and acrylic acid silicon-type polymkeric substance (ァ Network リ Le シ リ コ one Application is Port リ マ one) in the surface treatment liquid.
In the surface treatment liquid of the present invention employed acrylic acid fluorine based polymer and acrylic acid silicon-type polymkeric substance be dissolvable in water in the specified solvent, can be with the isocyanate compound reaction material of chemical bonding.Acrylic acid fluorine based polymer for example is the fluorine based polymer with solvent soluble of hydroxyl, alkyl or carboxyl, for example has: the segmented copolymer or derivatives thereof of acrylate and fluoroalkyl acrylate etc.Acrylic acid silicon-type polymkeric substance is the silicon-type polymkeric substance of solvent soluble, for example has: the segmented copolymer or derivatives thereof of acrylate and silicon Acrylote oxyalkyl ester etc.
The carbon black that can further add acetylene black, Ketjen black, TOKABLACK (ト one カ Block ラ ッ Network) etc. in the surface treatment liquid is as giving the material of electric conductivity.
The carbon black that uses in the surface treatment liquid is 0～40 quality % with respect to isocyanate prepolymer composition preferably.Cross at most come off, problem such as rerum natura reduction, not preferred.
Acrylic acid fluorine based polymer in the surface treatment liquid and acrylic acid silicon-type polymer phase are for isocyanate prepolymer composition, and the total amount that preferably makes acrylic acid fluorine based polymer and acrylic acid silicon-type polymkeric substance is 10～70 quality %.If be less than 10 quality %, then the effect that carbon black etc. is remained in the surface-treated layer reduces.And if the amount of polymkeric substance is more than 70 quality %, then the resistance value of charged roller raises, and flash-over characteristic reduces, and perhaps isocyanate prepolymer composition reduces relatively, can't form effective surface-treated layer.
Further, the organic solvent that contains dissolving isocyanate prepolymer composition and these polyethers based polymers that contain as required, acrylic acid fluorine based polymer and acrylic acid silicon-type polymkeric substance in the surface treatment liquid.Organic solvent is not particularly limited, and can use organic solvents such as ethyl acetate, methyl ethyl ketone (MEK), toluene.
As mentioned above, by making surface treatment liquid infiltration in the skin section of conducting rubber elastic layer and make its curing that surface-treated layer is set, the surface-treated layer infiltration is provided with integratedly in the skin section of conducting rubber elastic layer.Above-mentioned surface-treated layer mainly is that isocyanate prepolymer composition solidify to form, and is that the density of isocyanate prepolymer composition is sparsely integrally formed successively to inside from the surface.
Here, as mentioned above, be provided with when using the surface treatment liquid that contains isocyanates to carry out the surface-treated surface-treated layer on the surface of rubber elastic layer, the surface state and the friction factor that can obtain to stipulate by this surface treatment, simultaneously the resistance value deviation is little, and performance can obtain to have the effect of charged roller of the resistance value of regulation.
When the surface of conducting rubber elastic layer is provided with coating, for example can on the conducting rubber elastic layer, be coated with paint, make its dry solidification, be configured as coating thus.Paint can use material known such as polyurethane, acroleic acid polyurethane, nylon, NBR.The method of coating paint preferably adopts dip coating, rolling method, spraying process etc.
Followingly the present invention is described, but the present invention is not limited by it according to embodiment.
(sample 1)
The preparation method of＜roller 〉
At 100 mass parts epichlorohydrin rubbers (ェ ピ Network ロ マ one CG-102, ダ ィ ソ one society's system) adds 0.5 mass parts sodium trifluoroacetate in respectively as electric conductivity imparting agent, 3 mass parts zinc white, 2 mass parts stearic acid, 1.5 mass parts vulcanizing agents, mixing with the roll-type stirring machine, at the surperficial press molding of the mandrel of diameter 6mm, obtain having formed the roller of elastic layer on the mandrel surface.
The grinding on＜roller surface 〉
Roller is ground with grinding tool, carry out wet lapping with device shown in Figure 2 after the size having met, form along the circumferential direction extend concavo-convex, make axial surfaceness bigger than the surfaceness of circumferencial direction.
The preparation of＜surface treatment liquid 〉
100 mass parts ethyl acetate, 20 mass parts isocyanate compounds (MDI) are used bowl mill dispersing and mixing 3 hours.
The surface treatment of＜roller 〉
Surface treatment liquid is being kept under 20 ℃ the state above-mentioned roller dipping 30 seconds, with the baking oven for heating 10 hours that remains 100 ℃, obtaining charged roller then.
(sample 2-39)
Change the roughness of water-fast pouncing paper, the concentration of surface treatment liquid, the microhardness of rubber substrate etc., obtain the charged roller shown in table 1 and 2.
(sample 40-43)
Do not carry out wet lapping, change the concentration of surface treatment liquid, the microhardness of rubber substrate etc., obtain the charged roller shown in the table 2.
(test example 1)
For each charged roller, (little slope institute system SE-3300), is measured axial surface roughness Rz according to JISB0601-1994 with the surfaceness meter
1(μ m), axial concavo-convex equispaced Sm
1The surfaceness Rz of (μ m), circumferencial direction
2(μ m).The surfaceness of each charged roller and concavo-convex equispaced are two ends and central portion is measured at three places totally, obtain mean value.The result is shown in table 1 and 2.
(test example 2)
The surface of the charged roller by laser microscope (VK-9500, Keyence society system) observation sample 1, sample 7, sample 10, sample 13, sample 18, sample 27, sample 28, sample 29, sample 40-43.The result is shown in Fig. 3-14.
(test example 3) resistance to soiling
Each charged roller is assembled in the commercially available laser printer (LP-8900, EPSON society system) the surperficial dirty state of each charged roller of visualization after printing 20000.Resistance to soiling is with zero: do not have dirty, △: have slightly dirty, *: dirty judgement is arranged.The result is shown in table 1 and 2.
(test example 4) picture appraisal
Each charged roller is assembled in the commercially available laser printer (LP-8900, EPSON society system), carries out solid printing test, the image of visual valuation printing.The unit of surfaceness is μ m.Picture appraisal is with zero: do not have inequality, draw a portrait uniformly, △: image has inequality slightly, *: observing shows money or valuables one carries unintentionally judges.The result as shown in Table 1 and Table 2.
(test example 5) microhardness
Measure the microhardness of each charged roller with microhardness testers (MD-1, macromolecule gauge society system).The result as shown in Table 1 and Table 2.
[table 1]
[table 2]
(result gathers)
1.00＜Rz
1/ Rz
2≤ 2.00,0＜Sm
1/ Sm
2≤ 1.00,11 μ m＜Rz
1, microhardness is that the charged roller of 48-60 ° sample 1-26 does not all have dirty in resistance to soiling test, or have dirty slightly, it is no problem in actual applications degree, and not having inequality, formation uniform image or image inequality very little in the picture appraisal test, is no problem in actual use degree.Specifically, 11 μ m＜Rz
1The sample 1-4 of＜13.7 μ m and 24 charged roller are a little as seen dirty on the roller surface, but are almost no problem degree, do not observe the image inequality in picture appraisal.And Rz
1The sample 18-23 of＞27.6 μ m and the roller of 25-26 can be observed the image inequality a little, but are degree out of question, and the roller surface is not seen dirty.13.7 μ m≤Rz
1≤ 27.6 μ m and 53.0 μ m≤Sm
1The charged roller of the sample 5-17 of≤123.5 μ m is not all observed dirty on the roller surface, do not observe the image inequality yet.
Relative therewith, Rz
1/ Rz
2Being lower than 1 sample 27 and the charged roller of 40-43 as seen shows money or valuables one carries unintentionally in picture appraisal.And Rz
1/ Rz
2As seen the charged roller of big sample 37-39 shows money or valuables one carries unintentionally in picture appraisal too than 2.
Rz
1As seen the charged roller that is the following sample 27-32 of 11 μ m shows money or valuables one carries unintentionally in picture appraisal too, and it is dirty also to observe roller.Even being 45.4-47.3 ° charged roller, microhardness satisfies 1.00＜Rz
1/ Rz
2≤ 2.00,0＜Sm
1/ Sm
2≤ 1.00, Rz
1As seen＞11 μ m still show money or valuables one carries unintentionally in picture appraisal, observe roller dirty (sample 33-36).
As known from the above, satisfy 1.00＜Rz
1/ Rz
2≤ 2.00,0＜Sm
1/ Sm
2≤ 1.00, Rz
1＞11 μ m and microhardness are that 48-60 ° charged roller of the present invention can not make charged characteristic reduce, and can suppress toner, external additive adheres to, for a long time the retainer belt electrical characteristics.13.7 μ m≤Rz particularly
1≤ 27.6 μ m and 53.0 μ m≤Sm
1The charged roller of≤123.5 μ m keeps excellent charged characteristic, and the while can be suppressed toner, external additive adheres to, for a long time the retainer belt electrical characteristics.
Shown in Fig. 3-7, the charged roller surface of visible sample 1, sample 7, sample 10, sample 13 and sample 18 is provided with the long recess of circumferencial direction.And long recess is not observed on the surface of the charged roller of sample 40-43 in any direction.
Claims (4)
1. charged roller, this charged roller are that the periphery at mandrel has the charged roller of one deck conducting rubber elastic layer at least, it is characterized in that 10 mean roughness axial in this charged roller are Rz
1, this charged roller circumferencial direction 10 mean roughness be Rz
2, this charged roller axial concavo-convex equispaced be Sm
1, this charged roller circumferencial direction concavo-convex equispaced be Sm
2The time, the surface state of charged roller satisfies following formula, and the microhardness of above-mentioned charged roller is 48-60 °,
[several 1]
1.00＜Rz
1/Rz
2≤2.00
0＜Sm
1/Sm
2≤1.00
11μm＜Rz
1。
2. the described charged roller of claim 1 is characterized in that, this charged roller satisfies following formula:
[several 2]
Rz
1＜34μm
50μm＜Sm
1＜130μm。
3. the charged roller of claim 1 is characterized in that, the skin section of above-mentioned conducting rubber elastic layer is provided with the surface treatment liquid that contains isocyanate compound has carried out the surface-treated surface-treated layer.
4. each charged roller among the claim 1-3 is characterized in that, the wet lapping formation that the surface of above-mentioned rubber elastic layer is undertaken by utilizing water-fast pouncing paper.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009228694 | 2009-09-30 | ||
| JP2009-228694 | 2009-09-30 | ||
| JP2010200349A JP5477745B2 (en) | 2009-09-30 | 2010-09-07 | Charging roll |
| JP2010-200349 | 2010-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102033459A true CN102033459A (en) | 2011-04-27 |
| CN102033459B CN102033459B (en) | 2014-08-06 |
Family
ID=43886501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010501499.6A Active CN102033459B (en) | 2009-09-30 | 2010-09-30 | Charged roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102033459B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163758A (en) * | 2011-12-08 | 2013-06-19 | 三星电子株式会社 | Electrophotographic image forming apparatus |
| CN108604074A (en) * | 2016-08-04 | 2018-09-28 | Nok株式会社 | Conductive roll |
| CN112513745A (en) * | 2018-09-05 | 2021-03-16 | Nok株式会社 | Conductive roller |
| CN114270274A (en) * | 2019-08-26 | 2022-04-01 | Nok株式会社 | Charged roller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004309910A (en) * | 2003-04-09 | 2004-11-04 | Canon Inc | Electrifying member |
| CN1609726A (en) * | 2003-04-07 | 2005-04-27 | 佳能化成株式会社 | Charging roller, process cartridge and electrophotographic apparatus |
| CN101063852A (en) * | 2006-04-28 | 2007-10-31 | 夏普株式会社 | Image forming apparatus, process cartridge used therein, and production method of charging roller |
-
2010
- 2010-09-30 CN CN201010501499.6A patent/CN102033459B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609726A (en) * | 2003-04-07 | 2005-04-27 | 佳能化成株式会社 | Charging roller, process cartridge and electrophotographic apparatus |
| JP2004309910A (en) * | 2003-04-09 | 2004-11-04 | Canon Inc | Electrifying member |
| CN101063852A (en) * | 2006-04-28 | 2007-10-31 | 夏普株式会社 | Image forming apparatus, process cartridge used therein, and production method of charging roller |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163758A (en) * | 2011-12-08 | 2013-06-19 | 三星电子株式会社 | Electrophotographic image forming apparatus |
| CN103163758B (en) * | 2011-12-08 | 2016-09-14 | 三星电子株式会社 | Electrophotographic image forming |
| CN108604074A (en) * | 2016-08-04 | 2018-09-28 | Nok株式会社 | Conductive roll |
| US10268133B2 (en) | 2016-08-04 | 2019-04-23 | Nok Corporation | Conductive roll |
| CN108604074B (en) * | 2016-08-04 | 2020-07-24 | Nok株式会社 | Conductive roller |
| CN112513745A (en) * | 2018-09-05 | 2021-03-16 | Nok株式会社 | Conductive roller |
| CN112513745B (en) * | 2018-09-05 | 2024-02-20 | Nok株式会社 | Charging roller |
| CN114270274A (en) * | 2019-08-26 | 2022-04-01 | Nok株式会社 | Charged roller |
| CN114270274B (en) * | 2019-08-26 | 2024-05-24 | Nok株式会社 | Charging roller |
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| Publication number | Publication date |
|---|---|
| CN102033459B (en) | 2014-08-06 |
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Effective date of registration: 20160705 Address after: Tokyo, Japan, the port district, Zhi Zhi, Ding Ding, No. 12, No. 15 Patentee after: Nitto Kogyo KK Address before: Tokyo, Japan Patentee before: Nitto Kogyo KK |