CN1694009A - Elastic layer of charging roller and its manufacturing method and charging roller - Google Patents
Elastic layer of charging roller and its manufacturing method and charging roller Download PDFInfo
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- CN1694009A CN1694009A CN 200510034589 CN200510034589A CN1694009A CN 1694009 A CN1694009 A CN 1694009A CN 200510034589 CN200510034589 CN 200510034589 CN 200510034589 A CN200510034589 A CN 200510034589A CN 1694009 A CN1694009 A CN 1694009A
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Abstract
The invention relates to the flexible layer of electricizing roller. The said flexible layer is the electric flexible layer ringed or adhered on the metal core of the electricizing roller, and it is composed or comprised of the inner foam layer and the outer close-grained layer. The present invention also relates to the producing method of the flexible layer of the electricizing roller and the electricizing roller including the flexible layer. The surface layers of the foam-closed flexible layer of the electricizing roller are all closed, the resistance values of every layer are even, to ensure that the resistance values are 10 to the power 7 - 10 to the power 8 omega cm and the natural life is over 10 thousand pieces; when the electric preventing layer is smeared on the flexible layer surface of the electricizing roller, it solves the difficulty of the preventing layer smearing technics; the electric preventing layer can not only use water-soluble electric dope, but also can use solvent type of electric dope to smear; the electricizing roller with foam-closed structure can eliminate sound, reduce vibrancy, decrease the noises when the printer works, and can also improve the smearing technics.
Description
Technical field
The present invention relates to be used for the elastic layer and the manufacture method thereof of the charging roller of electrostatic latent image devices such as laser printer, Xerox, facsimile recorder, camera, the invention still further relates to a kind of charging roller that contains this elastic layer.
Background technology
According to the xerography technology, laser printer, facsimile recorder, duplicating machine, camera etc. the charging roller used in the electrostatic latent image device contact rotation with photosensitive drums, to give charging roller be uniform charging when executing electricity, so that also uniform charging of photosensitive drums, produce the electrostatic latent image of exposure (laser beam) image, toner is changeed on paper, finish electrostatic latent image, become visual image and be recorded on the paper, thereby finish laser printing (photograph) process.
Conventional charging roller is made up of metal-cored a, conductive elastic layer and the conductive protection layer of coating on elastic layer that is enclosed within on metal-cored.
In the past, charging roller is to be added in the rubber with conductive agent, makes conductive elastic layer, is coated with electrically-conducting paint again, makes the conductive protection layer.The elastic layer of this class charging roller is a solid rubber, and its hardness is at 40--75 ° of A, and it is extremely difficult to turn down hardness.This charging roller is printed, photocopying effect is good, but in printing, duplicating working, bad because of this elastic layer rubber damping performance muffler, can produce noise because of vibration.So for vibration damping, noise reduction, the elastic layer of foam sponge shape just arises at the historic moment.
Chinese patent CN1298124A " charging roller that is used for imaging equipment developing machine; the manufacturing method and apparatus of charging roller " discloses the technology of conductive foam elastic layer, its foaming, sulfidation are carried out in mould (metal die or superpolymer mould) and vulcanizing tank, these technology heat energy all are to transmit from outside to inside, and the foaming sulfidation also is to take place from outside to inside, thereby its sulfuration and foaming degree inhomogeneous, naturally the resistance range of its elastic layer is big, even inadequately.And the top layer of elastic layer also is foam, brought difficulty to applying protective layer on the elastic layer.
The Chinese patent CN1394906A that applies for artificial SUMITOMO CHEMICAL rubber Co., Ltd. discloses elastomeric compound and has been extruded into cylindric with φ 60, cut into given size again, realize preformed foaming sulfuration in 160 ℃ * 30 minutes in sulfuration (steam) then, again with metal-cored insertion, polish, cut, but its foam hole still is a perforating.
The Chinese patent CN1475870A of the applicant's application used microwave foaming sulfuration process to make charging roller (PCR) elastic layer, but the foam hole of the appearance of elastic layer remains perforating, gives spreading technology and has brought difficulty.
Summary of the invention
The objective of the invention is shortcoming, provide a kind of vibration damping, erasure effect very good, spreading protective seam elastic layer that is easy to charging roller and preparation method thereof that becomes when making the preparation charging roller at prior art;
Another object of the present invention provides a kind of have above-mentioned vibration damping, the extraordinary elastic layer of erasure effect, and changes the charging roller of spreading protective layer difficulty.
The present invention seeks to realize like this:
A kind of elastic layer of charging roller, described elastic layer be fingerstall or be bonded at the conductive elastic layer of charging roller on metal-cored, and it is compound or combine by the froth bed of internal layer and outer field dense layer.
Above-mentioned froth bed is to join the conductive rubber that refining, sulfuration, foaming form by the compound that comprises elastomeric material, conductive agent, gas-development agent, reinforcing agent, promoter and crosslinking chemical; Described dense layer is to join the conductive rubber that the refining sulfuration forms by the compound that comprises elastomeric material, conductive agent and reinforcing agent, crosslinking chemical.
Above-mentioned elastomeric material is selected ethylene-propylene-diene rubber (EPDM) or nitrile rubber (NBR) for use.
Above-mentioned conductive agent is a conductive carbon black, and conductive carbon black is the microwave good conductor.
Above-mentioned gas-development agent is 4, and the 4-OBSH is or/and azobisformamide.
Above-mentioned crosslinking chemical is for being sulphur.
The foaming density of above-mentioned froth bed is 0.60-0.7g/cm
3, the resistance value of described elastic layer is 10
7～10
8Ω cm.
The preparation method of the elastic layer of above-mentioned charging roller, it comprises the steps:
(1) two extruder cooperates a corresponding extruder head, and the compound that froth bed and dense layer are joined is that froth bed, skin are the preformed pipe of dense layer with the compound internal layer of extruding respectively;
(2) with above-mentioned preformed pipe process microwave vulcanization tinuous production, under 180 ℃ ± 10 ℃, through the microwave vulcanization groove, replenish sulfuration through hot-air trough at 180-200 ℃ more earlier, internal layer foams, and makes foam-closely knit pipe;
(3) above-mentioned pipe is cut by size, overlap or be bonded at metal-cored on, the size grinding forms the elastic layer of charging roller foam-closely knit charging roller in accordance with regulations.
The preparation method of the elastic layer of above-mentioned charging roller, it comprises the steps:
(1) above-mentioned respectively froth bed and the dense layer compound of joining is with unit head exruded foams layer preformed pipe and dense layer preformed pipe;
(2) with above-mentioned froth bed preformed pipe and dense layer preformed pipe respectively under 180 ℃ ± 10 ℃ through the microwave vulcanization groove, replenish sulfuration through hot-air trough at 180-200 ℃ again, make froth bed pipe and dense layer pipe;
(3) the froth bed pipe is cut, overlap or be bonded at metal-cored on, size grinding on request;
(4) the dense layer pipe that microwave vulcanization is become is cut into and requires length, overlaps or is bonded on the froth bed, and the size grinding forms the elastic layer of foam-closely knit charging roller on request again.
Another object of the present invention is achieved in that
A kind of charging roller, metal-cored by one, a cover or the conductive protection layer that is bonded at the conductive elastic layer on metal-cored and is sprayed on the elastic layer surface are formed, and described conductive elastic layer is the elastic layer of charging roller of the present invention, and described conductive protection layer is conductive polyurethane PU.
Advantage of the present invention:
1. what the present invention adopted the microwave vulcanization tinuous production is foam-closely knit compound, combined charging roller elastic layer, no matter be whole the manufacturing, still preparation combines respectively, and its top layer all is a compact-type, each layer resistance value is uniformly, guarantees that resistance value is 10
7～10
8Ω cm, the life-span is more than 10,000.
2. the surface of conductive elastic layer of the present invention is a compact-type, when the conductive protection layer is sprayed on charging roller elastic layer surface, has solved the difficulty of conductive protection layer spraying coating process.
3. because the surface of elastic layer of the present invention is a compact-type, and the conductive protection layer not only can be used water-soluble electrically-conducting paint, also useable solvents type electrically-conducting paint sprays.
4. compound, the combined elastic layer of the present invention's charging roller can increase to the frothing percentage of froth bed.Thereby improved vibration silencer, the noise when having reduced printer work, improved spraying coating process again.
Specific embodiments:
Embodiment 1:
A kind of elastic layer of charging roller, it is that conductive foam layer and outer field conduction dense layer are composited by internal layer.Its conductive foam layer and conduction dense layer prescription see Table 1:
The conductive foam layer of table 1EPDM rubber and conduction dense layer prescription
| Component | Weight fraction | |
| Froth bed | Dense layer | |
| EPDM (Ethylene Propylene Terpolymer) rubber | ??100 | ??100 |
| Conductive black | ??25 | ??20 |
| A 4.4 OBSH | ??3.5 | |
| Azobisformamide | ??0.8 | |
| Two sulfo-tetra methylthiurams | ??0.5 | ??0.5 |
| N-cyclohexyl-bisbenzothiazole base time four sulfonamide | ??1.5 | ??1.5 |
| The 2-benzothiazolyl mercaptan | ??0.5 | ??0.5 |
| Zinc paste | ??3 | ??3 |
| Sulphur | ??0.9 | ??0.9 |
| Lime carbonate | ??30 | ??40 |
| Stone flour | ??30 | ??40 |
| Paraffin oil | ??40 | ??25 |
| Foaming density (g/cm 3) | ??0.65-7 | |
The elastic layer preparation method of charging roller comprises the steps:
(1) table 1 " froth bed of EPDM rubber and dense layer prescription " is through joining refining;
(2) two extruders, be equipped with one have two charging apertures, one converge, make up the shape of the mouth as one speaks respectively with the froth bed in the table 1 and dense layer required separately through joining the sizing material that refining finishes, through extrude, preformed, become the compound preformed pipe of the outer dense layer of an interior foaming layer;
(3) this preformed pipe is through the microwave vulcanization groove of 180 ℃ of temperature, again through the microwave vulcanization tinuous production of 200 ℃ of hot-airs compensation sulfurations and make foam-closely knit compound-type conducting pipe;
(4) with this compound pipe of having made, cut cover (gluing) on metal-cored, be ground to given size then, form compound (combined) elastic layer of charging roller.
Detection method is routinely looked into survey, and the foaming density of described froth bed is 0.65g/cm
3, the resistance value of described elastic layer is 5 * 10
7Ω cm.
Embodiment 2
A kind of charging roller, its preparation method comprises the steps:
(1) table 1 " froth bed of EPDM rubber and dense layer prescription " is through joining refining;
(2) two extruders, be equipped with one have two charging apertures, one converge, make up the shape of the mouth as one speaks respectively with the froth bed in the table 1 and dense layer required separately through joining the sizing material that refining finishes, through extrude, preformed, become the compound preformed pipe of the outer dense layer of an interior foaming layer;
(3) this preformed pipe is through the microwave vulcanization groove of 175 ℃ of temperature, again through the microwave vulcanization tinuous production of 190 ℃ of hot-airs compensation sulfurations and make foam-closely knit compound-type conducting pipe;
(4) with this compound pipe of having made, cut cover (gluing) on metal-cored, be ground to given size then, form the compound elastic layer of charging roller;
(5) implementing the pu coating that is coated with conductive agent again forms for anti-(guarantor) sheath.
Embodiment 3:
A kind of elastic layer of charging roller, it is that conductive foam layer and outer field conduction dense layer combine by internal layer, its preparation method's bag following steps alive:
(1) table 1 " froth bed of EPDM rubber and dense layer prescription " is through joining refining;
(2) with an extruder, a head of being furnished with the shape of the mouth as one speaks, the froth bed batching of joining refining is on request extruded, make the preformed pipe,, compensate the microwave vulcanization tinuous production of sulfuration and make the conductive foam pipe through 180 ℃ of hot-airs again through the microwave vulcanization groove of 170 ℃ of temperature;
(3) with the required standby sizing material of refining of having joined of compact-type, make closely knit preformed pipe,, compensate the microwave vulcanization tinuous production of sulfuration and make conduction compact-type pipe through 180 ℃ of hot-airs again through the microwave vulcanization groove of 170 ℃ of temperature;
(4) the foam pipe is cut, cover (glue) is ground to given size on metal-cored, again the general severing to the compact-type pipe wringing fit of given size be enclosed within on the froth bed.
Detection method is routinely looked into survey, and the foaming density of described froth bed is 0.70g/cm
3, the resistance value of described elastic layer is 10
7Ω cm.
Embodiment 4
A kind of charging roller on its plinth of embodiment 3, becomes to be ground to given size with elasticity, adds through spreading that the PU of conductive agent coating is arranged is that protective layer is made the finished product charging roller again.
Embodiment 5
A kind of elastic layer of charging roller, it is that conductive foam layer and outer field conduction dense layer are composited by internal layer.Its conductive foam layer and conduction dense layer prescription see Table 2:
The conductive foam layer of table 2NBR rubber and conduction dense layer prescription
| Component | Weight fraction | |
| Froth bed | Dense layer | |
| NBR (fourth is fine) rubber | ??100 | ??100 |
| Conductive black | ??22 | ??17 |
| Polyvinyl alcohol (PVA) | ??3 | ??3 |
| Dibutyl phthalate | ??38 | ??30 |
| Lime carbonate | ??35 | ??30 |
| The potter's clay powder | ??40 | ??35 |
| Zinc paste | ??7 | ??5 |
| The 2-benzothiazolyl mercaptan | ??1 | ??1 |
| Two sulfo-tetra methylthiurams | ??0.7 | ??0.8 |
| N-cyclohexyl-bisbenzothiazole base time four sulfonamide | ??0.9 | ??1 |
| The dibutyl ring is for amino-formaldehyde zinc | ??0.5 | ??0.5 |
| Calcium oxide | ??4 | ??4 |
| Azobisformamide (gas-development agent) | ??6 | |
| Sulphur | ??0.9 | ??0.9 |
| Anti-old fourth | ??2.5 | ??2.5 |
| Foaming density | ??0.6-0.7g/cm 3 | |
The preparation method of the elastic layer of described charging roller comprises the steps:
(1) with table 2 " the conductive foam layer of NBR rubber and conduction dense layer prescription " through joining refining;
(2) two extruders, be equipped with one have two charging apertures, one converge, make up the shape of the mouth as one speaks respectively with the froth bed in the table 2 and dense layer required separately through joining the sizing material that refining finishes, through extrude, preformed, become a compound preformed pipe;
(3) this preformed pipe is through the microwave vulcanization groove of 190 ℃ of temperature, again through the microwave vulcanization tinuous production of 200 ℃ of hot-airs compensation sulfurations and make foam-closely knit compound-type conducting pipe;
(4) with this compound pipe of having made, cut cover (gluing) on metal-cored, be ground to given size then, form the compound elastic layer of charging roller.
Detection method is routinely looked into survey, and the foaming density of described froth bed is 0.7g/cm
3, the resistance value of described elastic layer is 10
8Ω cm.
Embodiment 6
A kind of elastic layer of charging roller, it is that conductive foam layer and outer field conduction dense layer combine by internal layer, its preparation method's bag following steps alive:
(1) table 2 " the conductive foam layer of NBR rubber and conduction dense layer prescription " is through joining refining;
(2) with an extruder, a head of being furnished with the shape of the mouth as one speaks, the froth bed batching of joining refining is on request extruded, make the preformed pipe,, compensate the microwave vulcanization tinuous production of sulfuration and make the conductive foam pipe through 195 ℃ of hot-airs again through the microwave vulcanization groove of 175 ℃ of temperature;
(3) with the required standby sizing material of refining of having joined of compact-type, make closely knit preformed pipe,, compensate the microwave vulcanization tinuous production of sulfuration and make conduction compact-type pipe through 195 ℃ of hot-airs again through the microwave vulcanization groove of 175 ℃ of temperature;
(4) the foam pipe is cut, cover (glue) is ground to given size on metal-cored, again the general severing to the compact-type pipe wringing fit of given size be enclosed within froth bed.
Detection method is routinely looked into survey, and the foaming density of described froth bed is 0.60g/cm
3, the resistance value of described elastic layer is 1.3 * 10
7Ω cm.
Embodiment 7
A kind of elastic layer of charging roller, it is that conductive foam layer and outer field conduction dense layer combine by internal layer, its preparation method's bag following steps alive:
(1) table 1 " the froth bed prescription of EPDM rubber ", table 2 " the dense layer prescription of NBR rubber " are through joining refining;
(2) with an extruder, a head of being furnished with the shape of the mouth as one speaks, the froth bed batching of joining refining is on request extruded, make the preformed pipe,, compensate the microwave vulcanization tinuous production of sulfuration and make the conductive foam pipe through 200 ℃ of hot-airs again through the microwave vulcanization groove of 180 ℃ of temperature;
(3) with the required standby sizing material of refining of having joined of compact-type, make closely knit preformed pipe,, compensate the microwave vulcanization tinuous production of sulfuration and make conduction compact-type pipe through 200 ℃ of hot-airs again through the microwave vulcanization groove of 180 ℃ of temperature;
(4) the foam pipe is cut, cover (glue) is ground to given size on metal-cored, again the general severing to the compact-type pipe wringing fit of given size be enclosed within on the froth bed.
Detection method is routinely looked into survey, and the foaming density of described froth bed is 0.63g/cm
3, the resistance value of described elastic layer is 8 * 10
7Ω cm.
Embodiment 8
A kind of elastic layer of charging roller, it is that conductive foam layer and outer field conduction dense layer combine by internal layer, its preparation method's bag following steps alive:
(1) table 2 " the froth bed prescription of NBR rubber ", table 1 " the dense layer prescription of EPDM rubber " are through joining refining;
(2) two extruders, be equipped with one have two charging apertures, one converge, make up the shape of the mouth as one speaks respectively with the froth bed in the table 2 and the dense layer in the table 1 required separately through joining the sizing material that refining finishes, through extrude, preformed, become a compound preformed pipe;
(3) this preformed pipe is through the microwave vulcanization groove of 175 ℃ of temperature, again through the microwave vulcanization tinuous production of 190 ℃ of hot-airs compensation sulfurations and make foam-closely knit compound-type conducting pipe;
(4) with this compound pipe of having made, cut cover (gluing) on metal-cored, be ground to given size then, form the compound elastic layer of charging roller.
Detection method is routinely looked into survey, and the foaming density of described froth bed is 0.67g/cm
3, the resistance value of described elastic layer is 10
7Ω cm.
Claims (10)
1. the elastic layer of a charging roller, described elastic layer are fingerstall or are bonded at the conductive elastic layer of charging roller on metal-cored, it is characterized in that: it is compound or combine by the froth bed of internal layer and outer field dense layer.
2. the elastic layer of charging roller according to claim 1 is characterized in that: described froth bed is to join the conductive rubber that refining, sulfuration, foaming form by the compound that comprises elastomeric material, conductive agent, gas-development agent, reinforcing agent, promoter and crosslinking chemical; Described dense layer is to join the conductive rubber that the refining sulfuration forms by the compound that comprises elastomeric material, conductive agent, crosslinking chemical.
3. the elastic layer of charging roller according to claim 2, it is characterized in that: described elastomeric material is selected ethylene-propylene-diene rubber (EPDM) or nitrile rubber (NBR) for use.
4. compound, the combined elastic layer of charging roller according to claim 2 is characterized in that: described conductive agent is a conductive carbon black.
5. the elastic layer of charging roller according to claim 2, it is characterized in that: described gas-development agent is 4, and the 4-OBSH is or/and azobisformamide.
6. the elastic layer of charging roller according to claim 2, it is characterized in that: described crosslinking chemical is for being sulphur.
7. according to the elastic layer of any one described charging roller of claim 1-6, it is characterized in that: the foaming density of described froth bed is 0.60-0.7g/cm
3, the resistance value of described elastic layer is 10
7～10
8Ω cm.
8. the preparation method of the elastic layer of any one described charging roller among the claim 1-7 is characterized in that it comprises the steps:
(1) two extruder cooperates a corresponding extruder head, and the compound that any one described froth bed and dense layer among the claim 1-7 are joined is that froth bed, skin are the preformed pipe of dense layer with the compound internal layer of extruding respectively;
(2) with above-mentioned preformed pipe process microwave vulcanization tinuous production, under 180 ℃ ± 10 ℃, through the microwave vulcanization groove, replenish sulfuration through hot-air trough at 180-200 ℃ more earlier, internal layer foams, and makes foam-closely knit pipe;
(3) above-mentioned pipe is cut by size, overlap or be bonded at metal-cored on, the size grinding forms the elastic layer of foam-closely knit charging roller in accordance with regulations.
9. the preparation method of the elastic layer of any one described charging roller among the claim 1-7 is characterized in that it comprises the steps:
(1) compound of respectively any one froth bed and dense layer among the claim 1-7 being joined is with unit head exruded foams layer preformed pipe and dense layer preformed pipe;
(2) froth bed preformed pipe and dense layer preformed pipe respectively under 180 ℃ ± 10 ℃ through the microwave vulcanization groove, replenish sulfuration through hot-air trough at 180-200 ℃ again, make froth bed pipe and dense layer pipe;
(3) the froth bed pipe is cut, overlap or be bonded at metal-cored on, size grinding on request;
(4) the dense layer pipe that microwave vulcanization is become is cut into and requires length, overlaps or is bonded on the froth bed, and the size grinding forms the elastic layer of foam-closely knit charging roller on request again.
10. charging roller, metal-cored by one, a cover or the conductive protection layer that is bonded at the conductive elastic layer on metal-cored and is coated at the elastic layer surface are formed, it is characterized in that: described conductive elastic layer is meant any one described charging roller elastic layer among the claim 1-7, and described conductive protection layer is conductive polyurethane PU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034589 CN1694009A (en) | 2005-05-17 | 2005-05-17 | Elastic layer of charging roller and its manufacturing method and charging roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034589 CN1694009A (en) | 2005-05-17 | 2005-05-17 | Elastic layer of charging roller and its manufacturing method and charging roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1694009A true CN1694009A (en) | 2005-11-09 |
Family
ID=35353013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510034589 Pending CN1694009A (en) | 2005-05-17 | 2005-05-17 | Elastic layer of charging roller and its manufacturing method and charging roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1694009A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968614A (en) * | 2010-08-23 | 2011-02-09 | 吴声立 | Conductive foam rubber charging roller and preparation method thereof |
| CN103869654A (en) * | 2014-03-11 | 2014-06-18 | 北京绿色快车国际橡塑制品有限公司 | Charging roller and preparation method thereof |
| CN103923400A (en) * | 2014-03-11 | 2014-07-16 | 北京绿色快车国际橡塑制品有限公司 | Conductive foaming tube and preparation method |
| CN105885247A (en) * | 2016-05-18 | 2016-08-24 | 东莞市沃顿橡塑新材料有限公司 | Primary charging roller with high and low-temperature resistance and processing process thereof |
| CN108003603A (en) * | 2017-10-24 | 2018-05-08 | 东莞市沃顿橡塑新材料有限公司 | A kind of conductive polyurethane charging roller and preparation method thereof |
| CN110607003A (en) * | 2019-08-21 | 2019-12-24 | 亿和精密工业（苏州）有限公司 | Semi-conductive foaming transfer roller and manufacturing method thereof |
-
2005
- 2005-05-17 CN CN 200510034589 patent/CN1694009A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968614A (en) * | 2010-08-23 | 2011-02-09 | 吴声立 | Conductive foam rubber charging roller and preparation method thereof |
| CN101968614B (en) * | 2010-08-23 | 2012-10-03 | 吴声立 | Conductive foam rubber charging roller and preparation method thereof |
| CN103869654A (en) * | 2014-03-11 | 2014-06-18 | 北京绿色快车国际橡塑制品有限公司 | Charging roller and preparation method thereof |
| CN103923400A (en) * | 2014-03-11 | 2014-07-16 | 北京绿色快车国际橡塑制品有限公司 | Conductive foaming tube and preparation method |
| CN105885247A (en) * | 2016-05-18 | 2016-08-24 | 东莞市沃顿橡塑新材料有限公司 | Primary charging roller with high and low-temperature resistance and processing process thereof |
| CN105885247B (en) * | 2016-05-18 | 2018-12-25 | 东莞市沃顿橡塑新材料有限公司 | A kind of high-low temperature resistant charging roller and its processing technology |
| CN108003603A (en) * | 2017-10-24 | 2018-05-08 | 东莞市沃顿橡塑新材料有限公司 | A kind of conductive polyurethane charging roller and preparation method thereof |
| CN110607003A (en) * | 2019-08-21 | 2019-12-24 | 亿和精密工业（苏州）有限公司 | Semi-conductive foaming transfer roller and manufacturing method thereof |
| CN110607003B (en) * | 2019-08-21 | 2022-02-18 | 亿和精密工业（苏州）有限公司 | Semi-conductive foaming transfer roller and manufacturing method thereof |
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