CN110597040B - Developing roller - Google Patents
Developing roller Download PDFInfo
- Publication number
- CN110597040B CN110597040B CN201910490939.3A CN201910490939A CN110597040B CN 110597040 B CN110597040 B CN 110597040B CN 201910490939 A CN201910490939 A CN 201910490939A CN 110597040 B CN110597040 B CN 110597040B
- Authority
- CN
- China
- Prior art keywords
- rubber
- inner layer
- mass
- parts
- resistance value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 141
- 239000005060 rubber Substances 0.000 claims abstract description 141
- 239000000203 mixture Substances 0.000 claims abstract description 88
- 239000006258 conductive agent Substances 0.000 claims abstract description 19
- 239000013013 elastic material Substances 0.000 claims abstract description 15
- 229920000459 Nitrile rubber Polymers 0.000 claims description 45
- 230000002093 peripheral effect Effects 0.000 claims description 34
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 27
- 229920002943 EPDM rubber Polymers 0.000 claims description 22
- 150000002500 ions Chemical class 0.000 claims description 22
- 229920003049 isoprene rubber Polymers 0.000 claims description 21
- 239000005062 Polybutadiene Substances 0.000 claims description 16
- 229920002857 polybutadiene Polymers 0.000 claims description 16
- 150000003839 salts Chemical group 0.000 claims description 10
- 150000001768 cations Chemical class 0.000 claims description 6
- 150000001450 anions Chemical class 0.000 claims description 4
- 125000001153 fluoro group Chemical group F* 0.000 claims description 4
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 13
- 239000010410 layer Substances 0.000 description 202
- 238000004132 cross linking Methods 0.000 description 53
- 239000007787 solid Substances 0.000 description 32
- 235000019198 oils Nutrition 0.000 description 30
- 229920003244 diene elastomer Polymers 0.000 description 26
- 239000003431 cross linking reagent Substances 0.000 description 25
- 239000002174 Styrene-butadiene Substances 0.000 description 24
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 24
- 229920005558 epichlorohydrin rubber Polymers 0.000 description 24
- 239000000126 substance Substances 0.000 description 24
- 239000011593 sulfur Substances 0.000 description 23
- 229910052717 sulfur Inorganic materials 0.000 description 23
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 19
- -1 ethylene, propylene Chemical group 0.000 description 18
- 238000005498 polishing Methods 0.000 description 16
- 239000004606 Fillers/Extenders Substances 0.000 description 15
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 239000002253 acid Substances 0.000 description 11
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 11
- 239000006057 Non-nutritive feed additive Substances 0.000 description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- 239000006229 carbon black Substances 0.000 description 10
- 230000001737 promoting effect Effects 0.000 description 10
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 9
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 9
- 239000000654 additive Substances 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 9
- 239000000945 filler Substances 0.000 description 9
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 description 8
- 239000006096 absorbing agent Substances 0.000 description 8
- 238000011109 contamination Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- 239000002356 single layer Substances 0.000 description 8
- 229960002447 thiram Drugs 0.000 description 8
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 7
- 238000004898 kneading Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 150000002825 nitriles Chemical class 0.000 description 7
- 108091008695 photoreceptors Proteins 0.000 description 7
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 6
- PDQAZBWRQCGBEV-UHFFFAOYSA-N Ethylenethiourea Chemical compound S=C1NCCN1 PDQAZBWRQCGBEV-UHFFFAOYSA-N 0.000 description 6
- 239000002671 adjuvant Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000001678 irradiating effect Effects 0.000 description 6
- BUZICZZQJDLXJN-UHFFFAOYSA-N 3-azaniumyl-4-hydroxybutanoate Chemical compound OCC(N)CC(O)=O BUZICZZQJDLXJN-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 5
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004014 plasticizer Substances 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- 235000014692 zinc oxide Nutrition 0.000 description 5
- OPNUROKCUBTKLF-UHFFFAOYSA-N 1,2-bis(2-methylphenyl)guanidine Chemical compound CC1=CC=CC=C1N\C(N)=N\C1=CC=CC=C1C OPNUROKCUBTKLF-UHFFFAOYSA-N 0.000 description 4
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001993 dienes Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 210000000689 upper leg Anatomy 0.000 description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 4
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 229960001545 hydrotalcite Drugs 0.000 description 3
- 229910001701 hydrotalcite Inorganic materials 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- 125000001741 organic sulfur group Chemical group 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 239000000370 acceptor Substances 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- AUZONCFQVSMFAP-UHFFFAOYSA-N disulfiram Chemical compound CCN(CC)C(=S)SSC(=S)N(CC)CC AUZONCFQVSMFAP-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000002667 nucleating agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- JAEZSIYNWDWMMN-UHFFFAOYSA-N 1,1,3-trimethylthiourea Chemical compound CNC(=S)N(C)C JAEZSIYNWDWMMN-UHFFFAOYSA-N 0.000 description 1
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 1
- VVFVRTNNLLZXAL-UHFFFAOYSA-N 2-(2-methylphenyl)guanidine Chemical compound CC1=CC=CC=C1N=C(N)N VVFVRTNNLLZXAL-UHFFFAOYSA-N 0.000 description 1
- OIXNFJTTYAIBNF-UHFFFAOYSA-N 2-(chloromethyl)oxirane;oxirane Chemical compound C1CO1.ClCC1CO1 OIXNFJTTYAIBNF-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- CPGFMWPQXUXQRX-UHFFFAOYSA-N 3-amino-3-(4-fluorophenyl)propanoic acid Chemical compound OC(=O)CC(N)C1=CC=C(F)C=C1 CPGFMWPQXUXQRX-UHFFFAOYSA-N 0.000 description 1
- HLBZWYXLQJQBKU-UHFFFAOYSA-N 4-(morpholin-4-yldisulfanyl)morpholine Chemical compound C1COCCN1SSN1CCOCC1 HLBZWYXLQJQBKU-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000006237 Intermediate SAF Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- MNOILHPDHOHILI-UHFFFAOYSA-N Tetramethylthiourea Chemical compound CN(C)C(=S)N(C)C MNOILHPDHOHILI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 150000003946 cyclohexylamines Chemical class 0.000 description 1
- PGAXJQVAHDTGBB-UHFFFAOYSA-N dibutylcarbamothioylsulfanyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SSC(=S)N(CCCC)CCCC PGAXJQVAHDTGBB-UHFFFAOYSA-N 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 229920005561 epichlorohydrin homopolymer Polymers 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- KVFIZLDWRFTUEM-UHFFFAOYSA-N potassium;bis(trifluoromethylsulfonyl)azanide Chemical compound [K+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F KVFIZLDWRFTUEM-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 229940052367 sulfur,colloidal Drugs 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920006029 tetra-polymer Polymers 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 150000003585 thioureas Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Dry Development In Electrophotography (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a developing roller, which can form good images with excellent contrast and fine line reproducibility, which can simultaneously improve both pure black concentration and 2-point concentration, and has no concentration unevenness depending on the concentration of images adjacent in the transverse direction, and even if the image formation is repeatedly performed, the image concentration of a pure black part is not particularly liable to be reduced slowly. The developing roller includes a roller body including: an inner layer which comprises a crosslinked product of a rubber composition containing NBR and an ion conductive agent, and which is tubular; and an outer layer comprising an elastic material, the roll body having an overall roll resistance value R 1 (Ω, 400V applied), and roller resistance value R in the inner layer-only state 2 (Ω, 400V applied) satisfies the formula (1): 0.1 +.logR 2 ‑logR 1 And (2) of the formula (2) and less than or equal to 1.0 (1): 6.5 +.logR 2 ≦8.5(2)。
Description
Technical Field
The present invention relates to a developing roller to be mounted in an image forming apparatus using an electrophotographic process.
Background
As a developing roller, for example, a roller body including a single layer formed by forming a rubber composition including a diene rubber and an ion conductive rubber into a tubular shape and then crosslinking the same is known.
Further, an oxide film may be formed by irradiating the outer peripheral surface of the single-layer roller body with ultraviolet rays or the like (see patent document 1 and the like).
Examples of the image forming apparatus to which the developing roller is attached include: laser printers, electrostatic copiers, plain paper facsimile machines, and combinations thereof.
As one of image evaluation criteria of an image forming apparatus such as a laser printer, a solid black (black solid) density and a 2 dot (dot) density are known.
The solid black density is the density of an image in which the entire surface of the paper is black, that is, solid black, and the higher the solid black density is, the higher the contrast is.
The 2-dot density is a density of images in which circles are juxtaposed on square lattices of about 80 m in lattice length, which is called as isolated 2-dots, and the higher the 2-dot density is, the higher the reproducibility of thin lines in the images is, and an image free from blurring (blur) or the like can be formed.
However, the two image densities are in an opposite relationship, and it is difficult to achieve both.
That is, there is a tendency that: the lower the roller resistance value of the developing roller, the higher the pure black concentration, but the higher the roller resistance value of the developing roller, the higher the 2-point concentration, and in the conventional developing roller having a single-layer structure, it is difficult to achieve both of the two opposite characteristics.
Research is underway: the roller body of the developing roller has a structure including two layers, i.e., a cylindrical inner layer containing an elastic material and an outer layer containing an elastic material laminated on the outer peripheral surface of the inner layer, and the resistance values of the two layers are adjusted so that the two opposite characteristics are compatible (see patent document 2, etc.).
That is, the solid black concentration is related to the resistance value near the surface of the roller body, and if the resistance value near the surface is reduced, the solid black concentration can be increased.
On the other hand, the 2-point concentration is related to the overall roll resistance value of the roll body, and the 2-point concentration can be increased as the overall roll resistance value is increased.
Thus, if
The roller body is configured to have two layers, an inner layer and an outer layer each including an elastic material,
wherein the outer layer is in a state of low resistance in the vicinity of the surface of the roller body in order to adjust the outer layer to a range in which the solid black concentration can be increased, and
in order to adjust the inner layer below the roller body to a range capable of increasing the concentration at 2 points, the roller resistance value of the entire roller body combined with the outer layer is set to a high-resistance state,
the pure black concentration can be combined with the 2-point concentration.
However, in the invention described in patent document 2, etc., the setting of the range of the resistance values of the inner layer and the outer layer is not yet proper, and thus there is a case where density unevenness depending on the density of an image adjacent in the lateral direction orthogonal to the paper feeding direction is generated on the formed image.
According to the studies of the inventors, the problems can be reduced to some extent by changing the setting of the range of the resistance values of the inner layer and the outer layer and changing the electronic conductivity formulation described in the inner layer self-lubricating document 2 to an ionic conductivity formulation using epichlorohydrin rubber as a rubber.
However, it was found that the above-described configuration has a new problem that the image density of the solid black portion gradually decreases during the repeated image formation.
[ Prior Art literature ]
[ patent literature ]
[ patent document 1] Japanese patent laid-open publication No. 2014-80456
[ patent document 2] Japanese patent laid-open publication 2016-95455
Disclosure of Invention
[ problem to be solved by the invention ]
The purpose of the present invention is to provide a developing roller that can form a good image that is excellent in both of the improvement of the solid black density and the 2-point density, the contrast and the reproducibility of a thin line, and that is free from concentration unevenness depending on the density of images adjacent in the lateral direction, and that is free from the concern that the image density of a solid black portion, in particular, gradually decreases even if image formation is repeated.
[ means of solving the problems ]
The present invention is a developing roller comprising a roller body including: an inner layer containing an elastic material and having a cylindrical shape; and an outer layer laminated on the outer peripheral surface of the inner layer and including an elastic material,
The inner layer comprises a crosslinked product containing a rubber having acrylonitrile butadiene rubber (acrylonitrile butadiene rubber, NBR), a rubber composition with an ion conductive agent,
the integral roller resistance value R of the roller body 1 (, 400V applied), and a roller resistance value R in the state of only the inner layer 2 (, 400V applied) satisfies the formula (1):
0.1logR 2 -logR 1 1.0 (1)
formula (2):
6.5logR 2 8.5 (2)
[ Effect of the invention ]
According to the present invention, it is possible to provide a developing roller capable of forming a good image which is excellent in both of the improvement of the solid black density and the 2-dot density, the contrast and the reproducibility of the thin line, and which is free from concentration unevenness depending on the density of the image adjacent in the lateral direction, and in which there is no concern that the image density of the solid black portion is reduced gradually, in particular, even if the image formation is repeated.
Drawings
Fig. 1 (a) is a perspective view showing the overall appearance of an example of the developing roller of the present invention, and fig. 1 (b) is an end view of the developing roller of the example.
Fig. 2 is a diagram for explaining a method of measuring the roller resistance value of the entire or inner layer of the roller body.
[ description of symbols ]
1: developing roller
2: inner layer
3: an outer peripheral surface
4: an outer layer
5: roller body
6: through hole
7: shaft
8: an outer peripheral surface
9: oxide film
10: aluminum roller
11: an outer peripheral surface
12: DC power supply
13: resistor
14: measuring circuit
F: load of
V: detecting voltage
Detailed Description
As described, the developing roller of the present invention: comprising a roller body comprising: an inner layer containing an elastic material and having a cylindrical shape; and an outer layer laminated on the outer peripheral surface of the inner layer and containing an elastic material,
the inner layer comprises a crosslinked product comprising a rubber having NBR and a rubber composition having an ionic conductor,
roll resistance R of the roll body as a whole 1 (, 400V applied), and roller resistance value R in the inner layer-only state 2 (, 400V applied) satisfies the formula (1):
0.1logR 2 -logR 1 1.0 (1)
formula (2):
6.5logR 2 8.5 (2)
as described above, the developing roller according to the present invention has a two-layer structure of the roller body including the inner layer and the outer layer, and the inner layer is a layer containing no (excluding) epichlorohydrin rubber to which ionic conductivity is imparted by containing NBR as a polar rubber and an ionic conductive agent.
Therefore, the roller resistance value R 1 R 2 By setting the range interaction to satisfy the formulas (1) and (2), a good image can be formed which is excellent in improving both the solid black density and the 2-dot density, and in improving both the contrast and the reproducibility of the thin line.
In addition, it is possible to suppress occurrence of density unevenness on an image depending on the density of images adjacent in the lateral direction, and to suppress a gradual decrease in the image density particularly in a solid black portion even if image formation is repeated.
These cases are also apparent from the results of examples, comparative examples, and conventional examples described later.
Fig. 1 (a) is a perspective view showing the overall appearance of an example of the developing roller of the present invention, and fig. 1 (b) is an end view of the developing roller of the example.
Referring to fig. 1 (a) and 1 (b), the developing roller 1 of the example includes a roller body 5 having a two-layer structure in which an outer layer 4 including an elastic material is directly laminated on an outer peripheral surface 3 of a cylindrical inner layer 2 including an elastic material.
A shaft 7 is inserted and fixed into the through hole 6 in the center of the inner layer 2.
The shaft 7 is integrally formed of a material having good electrical conductivity, for example, a metal such as iron, aluminum alloy, or stainless steel.
The shaft 7 is electrically connected and mechanically fixed to the roller body 5, for example, via an adhesive having conductivity, or is electrically connected and mechanically fixed to the roller body 5 by pressing an outer diameter larger than an inner diameter of the through hole 6 into the through hole 6.
Alternatively, the shaft 7 and the roller body 5 may be electrically joined and mechanically fixed by both of the above methods.
An oxide film 9 is formed on the surface of the outer layer 4, that is, on the outer peripheral surface 8 of the roller body 5 as shown in an enlarged manner in both figures.
By forming the oxide film 9, the oxide film 9 functions as a dielectric layer, and thus the dielectric loss tangent tan of the developing roller 1 can be reduced, and the oxide film 9 can also function as a low friction layer, thereby favorably suppressing the adhesion of toner.
Further, the oxide film 9 can be formed simply by oxidizing the rubber in the vicinity of the outer peripheral surface 8 by, for example, irradiating the outer peripheral surface 8 with ultraviolet rays or the like in an oxidizing environment, and therefore, it is also possible to suppress a decrease in productivity of the developing roller 1 or an increase in manufacturing cost.
The oxide film 9 may be omitted.
The inner layer 2 and the outer layer 4 are preferably each formed as a non-porous single layer in order to simplify the respective structures and improve durability.
The "single layer" of the outer layer 4 means that the number of layers including the elastic material is a single layer.
The term "two layers" of the roller body 5 means that the number of layers each including the elastic material of the inner layer 2 and the outer layer 4 is two, and in any case, the oxide film 9 formed by irradiation of ultraviolet rays or the like is not included in the number of layers.
In the present invention, the roll resistance R of the entire roll body 5 is set to 1 (omega, 400V applied), and the state of the inner layer 2 aloneLower roller resistance value R 2 The reason why ( and 400V applied) are limited to the ranges satisfying the above-mentioned formulas (1) and (2) is as follows.
Namely, the roller resistance value R 1 R 2 Each of the usual log R represented by the formula (1) 1 logR 2 Is the difference log R of (2) 2 -logR 1 If the resistance value is less than 0.1, the resistance value in the vicinity of the surface of the roller body 5 cannot be sufficiently reduced to a range where the solid black concentration can be improved.
Therefore, the density of the solid black is insufficient, and the contrast of the image is lowered.
In addition, at the difference log R 2 -logR 1 If the resistance value exceeds 1.0, the resistance value in the vicinity of the surface of the roller body 5 becomes too low, and for example, image defects due to an overcurrent are likely to occur in an image.
In addition, the roller resistance value R in the state of the inner layer 2 alone 2 In the form of log R 2 When the value is less than 6.5, the roll resistance value R of the entire roll body 5 formed by combining the outer layer 4 cannot be obtained 1 Sufficiently raised to a range that can raise the concentration at 2 points.
Therefore, the density of 2 points is insufficient, and reproducibility of thin lines in an image is lowered, and blurring or the like is likely to occur in the image.
On the other hand, the roller resistance value R in the state of only the inner layer 2 2 In the form of log R 2 When the number exceeds 8.5, density unevenness is likely to occur in the image depending on the density of the image adjacent in the lateral direction orthogonal to the paper feeding direction.
In contrast, by setting the roller resistance value R 1 R 2 When the ranges of the formulas (1) and (2) are satisfied, both the solid black density and the 2-dot density can be simultaneously improved, and both the contrast and the reproducibility of the thin line can be improved.
Further, by making the inner layer 2 to interact with the layer to which ion conductivity is imparted by including NBR and an ion conductive agent, it is possible to suppress occurrence of density unevenness on the image depending on the density of images adjacent in the lateral direction.
Thus, a good image can be formed which is excellent in both contrast and reproducibility of a thin line, and which is free from density unevenness depending on the density of images adjacent in the lateral direction.
In addition, the roller resistance value R 1 R 2 When the ranges of the formulas (1) and (2) are satisfied, and the inner layer 2 is the layer, the decrease in image density of the solid black portion, that is, the decrease in durable image density when the image formation is repeated can be suppressed by interacting with the above-described case.
Roll resistance measurement
Fig. 2 is a diagram for explaining a method of measuring the roller resistance value of the entire or inner layer of the roller body.
In the present invention, the roll resistance value R of the entire roll body 5 is represented by values measured in the normal temperature and humidity environment at a temperature of 23 and a relative humidity of 55% by the following method 1 Roller resistance value R of inner layer 2 2
Referring to fig. 1 (a), 1 (b) and 2, an aluminum drum 10 rotatable at a fixed rotation speed is first prepared, and the outer peripheral surface 3 of the inner layer 2 before forming the outer layer 4 or the outer peripheral surface 8 of the roller body 5 is brought into contact with the prepared outer peripheral surface 11 of the aluminum drum 10 from above.
A direct current power supply 12 and a resistor 13 are connected in series between the shaft 7 and the aluminum drum 10 to constitute a measurement circuit 14.
The (-) side of the dc power supply 12 is connected to the shaft 7, the (+) side is connected to the resistor 13, and the resistance value r of the resistor 13 is set to be 100deg.OMEGA.
Then, a load F of 450g was applied to each of the opposite ends of the shaft 7, and the aluminum drum 10 was rotated at 40rpm in a state where the roller body 5 or the inner layer 2 was pressed against the aluminum drum 10.
Further, the rotation was continued, and when an applied voltage E of 400V was applied from the dc power supply 12 to the roller body 5 or between the inner layer 2 and the aluminum cylinder 10, a detection voltage V applied to the resistor 13 was measured.
Based on the detection voltage V and the application voltage E (=400V), the roller resistance R of the entire roller body 5 1 Or the roller resistance value R of the inner layer 2 2 (hereinafter, collectively referred to as "R") basically utilizes the formula (i'):
RrE/V-r (i')
and the result was obtained. Wherein one term of-r in formula (i') can be regarded as minute, and thus the present invention utilizes the formula (i):
RrE/V (i)
the obtained value is set as the roll resistance value R of the whole roll body 5 1 Or the roller resistance value R of the inner layer 2 2
Rubber composition for inner layer 2
As described above, the inner layer 2 is formed by using a crosslinked product of a rubber composition containing NBR and an ion conductive agent to which ion conductivity is imparted.
NBR
As the NBR, a low nitrile NBR having an acrylonitrile content of 24% or less, a medium nitrile NBR of 25% to 30%, a medium and high nitrile NBR of 31% to 35%, a high nitrile NBR of 36% to 42% and an extremely high nitrile NBR of 43% or more can be used.
Further, as the NBR, there are an oil-extended NBR in which an extender oil is added to adjust flexibility and a non-oil-extended NBR in which no extender oil is added, but in the present invention, in order to prevent contamination of a photoreceptor or the like, a non-oil-extended NBR containing no extender oil which can be an exuded substance is preferably used.
One or two or more of these NBRs may be used.
Other rubbers
Other rubbers such as diene rubber and ethylene propylene rubber may be used in combination with the NBR.
(diene rubber)
The diene rubber containing the NBR functions to impart good processability to the rubber composition, to improve mechanical strength, durability, and the like of the inner layer 2, or to impart good properties as rubber, that is, to the inner layer 2, that is, to be soft and to have a small compression set so as not to easily cause collapse.
Examples of the diene rubber include natural rubber, isoprene Rubber (IR), styrene butadiene rubber (styrene butadiene rubber, SBR), butadiene Rubber (BR), and chloroprene rubber (chloroprene rubber, CR).
Among them, the diene rubber is preferably a nonpolar diene rubber, specifically at least one of IR, BR, and SBR.
IR
As the IR, various IR that artificially reproduces the structure of natural rubber and has a polyisoprene structure can be used.
Further, as IR, there are oil-extended IR in which an extender oil is added to adjust flexibility and non-oil-extended IR in which no extender oil is added, but in the present invention, in order to prevent contamination of the photoreceptor, it is preferable to use non-oil-extended IR which does not contain an extender oil that can be a exuding substance.
One or two or more of these IRs may be used.
BR
As BR, various BR having a polybutadiene structure in the molecule and having crosslinkability can be used.
It is preferable that the cis-1, 4 bond content be 95% or more, which can exhibit good properties as rubber particularly at a wide temperature range from low temperature to high temperature.
Further, there are an oil-filled BR in which an extender oil is added to adjust flexibility and a non-oil-filled BR in which no extender oil is added, but in the present invention, it is preferable to use a non-oil-filled BR containing no extender oil which can be exuded in order to prevent contamination of the photoreceptor.
One or two or more of these BRs may be used.
SBR
As SBR, various SBR synthesized by copolymerizing styrene and 1, 3-butadiene by various polymerization methods such as emulsion polymerization and solution polymerization can be used.
As SBR, there are SBR of high styrene type, medium styrene type and low styrene type classified according to styrene content, and these can be used.
Particularly preferred is Mooney viscosity ML 1+4 SBR (100 ) was 60 or less.
Further, as SBR, there are oil-extended SBR in which extender oil is added to adjust flexibility and non-oil-extended SBR in which no extender oil is added, but in the present invention, it is preferable to use non-oil-extended SBR which does not contain extender oil that can be exuded in order to prevent contamination of a photoreceptor or the like.
One or two or more of these SBR may be used.
(ethylene propylene rubber)
The ethylene propylene rubber may be: ethylene propylene rubber (ethylene propylene monomer, EPM) as a copolymer of ethylene and propylene, and ethylene propylene diene rubber (ethylene propylene diene monomer, EPDM) as a copolymer of ethylene and propylene and diene are particularly preferable.
EPDM
As EPDM, various copolymers obtained by copolymerizing ethylene, propylene, and diene can be used.
Examples of the diene include ethylidene norbornene (ethylidene norbornene, ENB) and dicyclopentadiene (DCPD).
Further, there are an oil-filled EPDM in which an extender oil is added to adjust flexibility and a non-oil-filled EPDM in which no extender oil is added, but in the present invention, a non-oil-filled EPDM containing no extender oil which can be an exuded substance is preferably used in order to prevent contamination of a photoreceptor or the like.
One or two or more of these EPDM may be used.
(proportion of rubber)
The ratio of each rubber when NBR and other rubbers are used as the rubber can be determined according to various characteristics required for the inner layer 2, particularly the roll resistance value R 2 Or flexibility of the inner layer 2.
For example, the proportion of NBR, nonpolar diene rubber, and NBR in EPDM is preferably 30 parts by mass or more, and preferably 60 parts by mass or less, based on 100 parts by mass of the total amount of rubber.
When the proportion of NBR is less than the above range, the roller resistance R in the state of the inner layer 2 alone 2 Beyond the range of the above formula (2), density unevenness is liable to occur on the image depending on the density of the image adjacent in the lateral direction orthogonal to the paper feeding direction of the paper.
On the other hand, when the proportion of NBR exceeds the above range, the proportion of the nonpolar and high-resistance diene rubber is relatively small.
Therefore, there is a case where only the roller resistance value R in the state of the inner layer 2 2 When the value falls short of the above formula (2), the roll resistance R of the entire roll body 5 formed by combining the outer layer 4 cannot be obtained 1 Sufficiently raised to a range that can raise the concentration at 2 points.
Further, the 2-point density may be insufficient, and reproducibility of thin lines in an image may be reduced, and blurring or the like may be easily generated in the image.
Further, since the proportion of EPDM excellent in light resistance, ozone resistance, weather resistance and the like is relatively small, the light resistance, ozone resistance, weather resistance and the like of the inner layer 2 may be lowered.
On the other hand, by setting the proportion of NBR to the above range, the effect of the combination of diene rubber and EPDM can be maintained, and the resistance R of the inner layer 2 can be set to 2 Is adjusted to the range of formula (2).
The EPDM is preferably used in an amount of 20 parts by mass or more, and preferably 40 parts by mass or less, based on 100 parts by mass of the total amount of rubber.
If the EPDM ratio is less than the above range, the effect of the EPDM may be insufficient, and the light resistance, ozone resistance, weather resistance, and the like of the inner layer 2 may be reduced.
On the other hand, when the EPDM ratio exceeds the above range, the NBR ratio may be relatively small, and the roll resistance R may be relatively small 2 Exceeding the range of the formula (2).
Further, there is a tendency that density unevenness is liable to occur in the image depending on the density of the image adjacent in the lateral direction orthogonal to the paper feeding direction.
The proportion of the nonpolar diene rubber is the residual amount of NBR and EPDM.
That is, when the ratio of NBR to EPDM is set to a predetermined value within the above range, the ratio of the nonpolar diene rubber may be set so that the total amount of rubber becomes 100 parts by mass.
Ion conductive agent
The ion conductive agent is preferably a salt (ionic salt) of an anion or a cation having a fluoro group and a sulfonyl group in the molecule.
By blending the ionic conductive agent, the ionic conductivity of the rubber composition can be further improved, and the roll resistance value R of the inner layer 2 can be further reduced 2
Examples of anions having a fluoro group and a sulfonyl group in a molecule constituting the ionic salt include one or more of fluoroalkyl sulfonate ions, bis (fluoroalkyl sulfonyl) imide ions, and tris (fluoroalkyl sulfonyl) methide ions.
Among them, examples of fluoroalkyl sulfonate ions include CF 3 SO 3 - C 4 F 9 SO 3 - And one or two or more of the following.
Examples of the bis (fluoroalkylsulfonyl) imide ion include (CF 3 SO 2 ) 2 N - (C 2 F 5 SO 2 ) 2 N - (C 4 F 9 SO 2 )(CF 3 SO 2 )N - (FSO 2 C 6 F 4 )(CF 3 SO 2 )N - (C 8 F 17 SO 2 )(CF 3 SO 2 )N - (CF 3 CH 2 OSO 2 ) 2 N - (CF 3 CF 2 CH 2 OSO 2 ) 2 N - (HCF 2 CF 2 CH 2 OSO 2 ) 2 N - [(CF 3 ) 2 CHOSO 2 ] 2 N - And one or two or more of the following.
Further, examples of the tris (fluoroalkylsulfonyl) methide ion include (CF 3 SO 2 ) 3 C - (CF 3 CH 2 OSO 2 ) 3 C - And one or two or more of the following.
Examples of the cations include one or more of ions of alkali metals such as sodium, lithium, and potassium, ions of group 2 elements such as beryllium, magnesium, calcium, strontium, and barium, ions of transition elements, cations of amphoteric elements, quaternary ammonium ions, and imidazolium cations.
The ionic salt is particularly preferably a lithium salt using lithium ions as cations or a potassium salt using potassium ions.
Wherein the ionic conductivity of the rubber composition is improved and the roller resistance R of the inner layer 2 is reduced 2 In terms of the effect of (c), it is preferably (CF) 3 SO 2 ) 2 NLi [ lithium bis (trifluoromethanesulfonyl) imide, li-TFSI ], and/or (CF) 3 SO 2 ) 2 NK [ Potassium bis (trifluoromethanesulfonyl) imide, K-TFSI ].
The proportion of the ionic salt plasma conductive agent is preferably 0.1 part by mass or more, and preferably 1 part by mass or less, relative to 100 parts by mass of the total amount of the rubber.
When the proportion of the ion conductive agent is less than the above range, the roll resistance value R in the state of the inner layer 2 alone 2 Beyond the range of the above formula (2), density unevenness is liable to occur on the image depending on the density of the image adjacent in the lateral direction orthogonal to the paper feeding direction of the paper.
On the other hand, in the case where the proportion of the ion conductive agent exceeds the range, the roller resistance value R 2 When the value falls short of the above formula (2), the roll resistance R of the entire roll body 5 formed by combining the outer layer 4 cannot be obtained 1 Sufficiently raised to a range that can raise the concentration at 2 points.
Therefore, the density of 2 points is insufficient, and reproducibility of thin lines in an image is lowered, and blurring or the like is likely to occur in the image.
In contrast, by setting the ratio of the ion conductive agent to the above range, the roll resistance value R of the inner layer 2 can be set 2 Is adjusted to the range of formula (2).
Crosslinking component
The rubber composition for the inner layer 2 contains a crosslinking component for crosslinking the rubber.
The crosslinking component is preferably a combination of a crosslinking agent for crosslinking the rubber and a crosslinking accelerator for accelerating the crosslinking of the rubber by the crosslinking agent.
Among these, examples of the crosslinking agent include sulfur-based crosslinking agents, thiourea-based crosslinking agents, triazine derivative-based crosslinking agents, peroxide-based crosslinking agents, and various monomers, and sulfur-based crosslinking agents are particularly preferred.
(Sulfur-based crosslinking agent)
Examples of the sulfur-based crosslinking agent include: sulfur such as powdered sulfur, oil-treated powdered sulfur, precipitated sulfur, colloidal sulfur, and dispersible sulfur, or organic sulfur-containing sulfonate compounds such as tetramethylthiuram disulfide and N, N-dithiodimorpholine, and the like, and sulfur is particularly preferable.
In view of imparting good properties as rubber to the roller body, the ratio of sulfur is preferably 0.5 parts by mass or more, and preferably 2 parts by mass or less, relative to 100 parts by mass of the total amount of rubber.
In the case of using, for example, powdered sulfur treated with oil, dispersible sulfur or the like as sulfur, the above ratio is set to the ratio of sulfur itself as an active ingredient contained in each of them.
In the case of using an organic sulfur-containing compound as the crosslinking agent, the ratio of the organic sulfur-containing compound to the total amount of the rubber is preferably adjusted so that the ratio of the sulfur contained in the molecule to 100 parts by mass of the total amount of the rubber falls within the above-mentioned range.
(crosslinking accelerator)
Examples of the crosslinking accelerator used for accelerating the crosslinking of the rubber include one or more of a thiuram accelerator, a thiazole accelerator, a thiourea accelerator, a guanidine accelerator, a sulfenamide accelerator, and a dithiocarbamate accelerator.
Among them, a thiuram accelerator and a thiazole accelerator are preferably used in combination.
Examples of the thiuram-based accelerator include one or more of tetramethylthiuram monosulfide, tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide, and dipentamethylenethiuram tetrasulfide, and particularly preferably tetramethylthiuram monosulfide.
Examples of the thiazole-based accelerator include one or more of 2-mercaptobenzothiazole, di-2-benzothiazolyl disulfide, zinc salt of 2-mercaptobenzothiazole, cyclohexylamine salt of 2-mercaptobenzothiazole, and 2- (4' -morpholinodithio) benzothiazole, and di-2-benzothiazolyl disulfide is particularly preferable.
In the two-component system, the thiuram accelerator is preferably used in an amount of 0.3 parts by mass or more, and preferably 1 part by mass or less based on 100 parts by mass of the total amount of the rubber, considering that the effect of promoting crosslinking of the rubber is sufficiently exhibited.
The proportion of the thiazole-based accelerator is preferably 0.3 parts by mass or more and preferably 2 parts by mass or less relative to 100 parts by mass of the total amount of the rubber.
Carbon black
Carbon black may be further blended as a filler in the rubber composition for the inner layer 2.
By blending carbon black, the mechanical strength of the developing roller and the like can be improved.
Examples of the carbon black include: SAF, ISAF, HAF, FEF, etc.
In addition, if conductive carbon black is used as carbon black, electron conductivity can be imparted to the inner layer 2.
Examples of the conductive carbon black include acetylene black.
The proportion of carbon black is preferably 3 parts by mass or more and preferably 25 parts by mass or less relative to 100 parts by mass of the total amount of rubber.
Other cases
Various additives may be further blended as necessary in the rubber composition for the inner layer 2.
Examples of the additive include a crosslinking accelerator, a plasticizer, and a processing aid.
Among them, examples of the crosslinking promoting agent include metal compounds such as zinc oxide (zinc white); one or more of fatty acids such as stearic acid, oleic acid and cottonseed fatty acid, and other conventionally known crosslinking promoting auxiliaries.
The proportion of the crosslinking promoting assistant is preferably 0.1 part by mass or more and preferably 7 parts by mass or less, respectively, relative to 100 parts by mass of the total amount of the rubber.
Examples of plasticizers include: examples of the processing aid include various plasticizers such as dibutyl phthalate, dioctyl phthalate, and tricresyl phosphate, and various waxes such as polar waxes, and fatty acid metal salts such as zinc stearate.
The proportion of the plasticizer and/or the processing aid is preferably 3 parts by mass or less relative to 100 parts by mass of the total amount of the rubber.
Further, as the additive, various additives such as a filler other than carbon black, a deterioration inhibitor, a scorch retarder, a lubricant, a pigment, an antistatic agent, a flame retardant, a neutralizing agent, a nucleating agent, and a co-crosslinking agent may be blended in an arbitrary ratio.
Preparation of rubber composition
The rubber composition for the inner layer 2 containing the above-described components can be prepared in the same manner as in the prior art.
First, rubber is masticated, and then each component other than the crosslinking component is added to be kneaded, and then the crosslinking component is finally added to be kneaded, thereby obtaining a rubber composition for the inner layer 2.
For kneading, a kneader, a Banbury mixer, an extruder, or the like can be used.
Rubber composition for outer layer 4
The outer layer 4 can use the roll resistance R of the whole roll body by combining with the inner layer 2 1 And is formed of various elastic materials adjusted to the range.
It is particularly preferable that the outer layer 4 is formed of a crosslinked product of a rubber composition containing an epichlorohydrin rubber and a diene rubber.
Epichlorohydrin rubber
Examples of the epichlorohydrin rubber include epichlorohydrin homopolymers, epichlorohydrin-ethylene oxide binary copolymers (ECO), epichlorohydrin-propylene oxide binary copolymers, epichlorohydrin-allyl glycidyl ether binary copolymers, epichlorohydrin-ethylene oxide-allyl glycidyl ether terpolymers (GECO), epichlorohydrin-propylene oxide-allyl glycidyl ether terpolymers, and epichlorohydrin-ethylene oxide-propylene oxide-allyl glycidyl ether tetrapolymers.
Among these, copolymers comprising ethylene oxide, in particular ECO and/or GECO, are preferred.
The ethylene oxide content in ECO and/or GECO is preferably 30 mol% or more, particularly 50 mol% or more, and preferably 80 mol% or less.
The ethylene oxide plays a role of reducing the resistance value of the outer layer 4.
However, when the ethylene oxide content is less than the above range, the above effect cannot be sufficiently obtained, and thus the resistance value of the outer layer 4 may not be sufficiently reduced.
On the other hand, when the ethylene oxide content exceeds the above range, crystallization of ethylene oxide occurs, and the chain segment movement of the molecular chain is hindered, so that the resistance value of the outer layer 4 tends to rise instead.
In addition, the outer layer 4 after crosslinking may become too hard, or the viscosity of the rubber composition before crosslinking may increase upon heating and melting, and the processability of the rubber composition may be lowered.
The epichlorohydrin content in ECO is the residual of the ethylene oxide content.
That is, the epichlorohydrin content is preferably 20 mol% or more, and preferably 70 mol% or less, particularly 50 mol% or less.
The allyl glycidyl ether content in GECO is preferably 0.5 mol% or more, particularly 2 mol% or more, and is preferably 10 mol% or less, particularly 5 mol% or less.
In order to secure the free volume, the allyl glycidyl ether itself functions as a side chain, and thus functions to suppress crystallization of ethylene oxide and reduce the resistance value of the outer layer 4.
However, when the allyl glycidyl ether content is less than the above range, the above effect cannot be sufficiently obtained, and thus the resistance value of the outer layer 4 may not be sufficiently reduced.
On the other hand, allyl glycidyl ether functions as a crosslinking point at the time of crosslinking of GECO.
Therefore, when the allyl glycidyl ether content exceeds the above range, the crosslinking density of GECO becomes too high, and the segment movement of the molecular chain is hindered, so that the resistance value of the outer layer 4 tends to rise instead.
The epichlorohydrin content in GECO is the residual amount of the ethylene oxide content and the allyl glycidyl ether content.
That is, the epichlorohydrin content is preferably 10 mol% or more, particularly 19.5 mol% or more, and preferably 69.5 mol% or less, particularly 60 mol% or less.
Further, as GECO, in addition to the copolymer in the narrow sense obtained by copolymerizing three monomers described above, a modified product obtained by modifying an epichlorohydrin-ethylene oxide copolymer (ECO) with allyl glycidyl ether is also known.
In the present invention, any of the GECO's may also be used.
As the epichlorohydrin rubber, GECO is particularly preferable.
GECO is derived from allyl glycidyl ether, and has a double bond in the main chain that functions as a crosslinking point, so that compression set after crosslinking can be reduced by crosslinking between the main chains.
Therefore, the outer layer 4 can be made to have a small compression permanent strain and to be less likely to collapse.
One or two or more of these epichlorohydrin rubbers may be used.
Diene rubber
The diene rubber functions to impart good processability to the rubber composition, to improve mechanical strength, durability, and the like of the outer layer 4, or to impart good properties as a rubber to the outer layer 4.
The diene rubber is oxidized by ultraviolet irradiation, and an oxide film 9 is formed on the surface of the outer layer 4, that is, on the outer peripheral surface 8 of the roller body 5.
Examples of the diene rubber include natural rubber and IR, NBR, SBR, BR, CR.
Among them, the diene rubber is preferably a nonpolar diene rubber, specifically, at least one of three types of IR, BR and SBR, and particularly SBR.
As SBR, one or two or more of the same SBR as that used in the inner layer 2 may be used.
Further, CR may be further blended as the diene rubber.
CR is a diene rubber having polarity as described above, and therefore the roll resistance R of the roll body 5 as a whole is set to the resistance value of the outer layer 4 itself 1 Fine adjustment is performed to function.
As CR, one or two or more of the same CRs as used in the inner layer 2 may be used.
(proportion of rubber)
The proportion of the rubber may be arbitrarily set according to various characteristics such as the resistance value and flexibility required for the outer layer 4.
Among them, the proportion of the epichlorohydrin rubber is preferably 15 parts by mass or more, and preferably 30 parts by mass or less, of 100 parts by mass of the total amount of the rubber.
When the ratio of the epichlorohydrin rubber is less than the above range, the resistance value of the outer layer 4 itself becomes too high, and the roll resistance value R of the entire roll body 5 becomes too high 1 And tends to become high.
Furthermore, there is a time difference logR 2 -logR 1 Below the range of the above formula (1), the resistance value in the vicinity of the surface of the roller body 5 cannot be sufficiently reduced to a range where the solid black density can be increased, and the contrast of the image is lowered due to insufficient solid black density.
On the other hand, when the ratio of the epichlorohydrin rubber exceeds the above range, the roll resistance value R of the whole roll body 5 is set 1 And tends to become lower.
Furthermore, there is a time difference logR 2 -logR 1 When the electric resistance value in the vicinity of the surface of the roller body is too low in the range exceeding the above formula (1), for example, image defects or the like due to an overcurrent are likely to occur in an image.
Further, since the proportion of the diene rubber is relatively small, there are cases where good processability cannot be imparted to the rubber composition or good properties as a rubber cannot be imparted to the outer layer 4.
In contrast, when the ratio of the epichlorohydrin rubber is set to the above range, the effect of the diene rubber used in combination can be maintained, the resistance value of the outer layer 4 can be reduced, and the difference log R can be reduced 2 -logR 1 Is adjusted to the range of formula (1).
The proportion of CR is preferably 5 parts by mass or more, and preferably 12 parts by mass or less, of 100 parts by mass of the total amount of rubber.
When the ratio of CR is less than the above range, the above effect by the blended CR, that is, the resistance value of the outer layer 4 itself, and further the roll resistance value R of the entire roll body 5, may not be sufficiently obtained 1 The effect of fine adjustment is performed.
On the other hand, when the ratio CR exceeds the above range, the epichlorohydrin rubber is relatively reduced, the resistance value of the outer layer 4 itself becomes excessively high, and the roll resistance value R of the entire roll body 5 becomes excessively high 1 And tends to become high.
Furthermore, there is a time difference logR 2 -logR 1 Below the range of the above formula (1), the resistance value in the vicinity of the surface of the roller body 5 cannot be sufficiently reduced to a range where the solid black density can be increased, and the contrast of the image is lowered due to insufficient solid black density.
The proportion of the nonpolar diene rubber other than CR is epichlorohydrin rubber or the residual amount of epichlorohydrin rubber and CR.
That is, when the ratio of the epichlorohydrin rubber or the ratio of the epichlorohydrin rubber to CR is set to a predetermined value within the above range, the ratio of the nonpolar diene rubber may be set so that the total amount of the rubber becomes 100 parts by mass.
Crosslinking component
The crosslinking component is preferably a combination of a crosslinking agent and a crosslinking accelerator, and the crosslinking agent is preferably a sulfur-based crosslinking agent, particularly sulfur, similarly to the case of the inner layer 2.
The ratio of the sulfur-based crosslinking agent is preferably set to the same extent as in the case of the inner layer 2.
The crosslinking accelerator used in combination with the sulfur-based crosslinking agent is preferably a combination of four types, namely, a thiuram-based accelerator, a thiazole-based accelerator, a thiourea-based accelerator, and a guanidine-based accelerator.
Among them, the same compounds as those used in the inner layer 2 can be used as the thiuram-based accelerator and the thiazole-based accelerator.
The proportion of the two crosslinking accelerators is also preferably set to the same extent as in the case of the inner layer 2.
As the thiourea-based accelerator, various thiourea compounds having a thiourea structure in the molecule can be used.
Examples of the thiourea-based accelerator include: ethylene thiourea, N' -diphenyl thiourea, trimethyl thiourea, formula (3):
(C n H 2n+1 NH) 2 CS(3)
in the formula, n represents an integer of 1 to 12, and one or more of thiourea, tetramethylthiourea and the like are particularly preferably ethylene thiourea.
The proportion of the thiourea-based accelerator is preferably 0.3 parts by mass or more and preferably 1 part by mass or less relative to 100 parts by mass of the total amount of the rubber.
Examples of the guanidine-based accelerator include one or more of 1, 3-diphenylguanidine, 1, 3-di-o-tolylguanidine, 1-o-tolylguanidine, and the like, and 1, 3-di-o-tolylguanidine is particularly preferable.
The proportion of the guanidine accelerator is preferably 0.2 parts by mass or more and preferably 1 part by mass or less relative to 100 parts by mass of the total amount of the rubber.
The thiourea accelerator also functions as a crosslinking agent for ECO that does not have sulfur crosslinkability, and the guanidine accelerator also functions as an accelerator for ECO crosslinking by the thiourea accelerator.
Ion conductive agent
The rubber composition for the outer layer 4 may further contain an ion conductive agent.
By modulating ionic conductionThe agent can further improve the ionic conductivity of the rubber composition, and further reduce the resistance value of the outer layer 4 itself, and further the roll resistance value R of the whole roll body 5 1
The ion conductive agent is preferably a salt (ionic salt) of an anion or a cation having a fluoro group or a sulfonyl group in the molecule, which is the same as that used in the inner layer 2.
The proportion of the ion conductive agent is preferably 0.5 parts by mass or more and preferably 2 parts by mass or less relative to 100 parts by mass of the total amount of the rubber.
Other cases
Various additives may be further blended as necessary in the rubber composition for the outer layer 4.
Examples of the additive include an acid absorber.
The acid absorber functions to prevent the residual of chlorine-based gas generated from epichlorohydrin rubber or CR in the inner layer 2 during crosslinking, and the inhibition of crosslinking and contamination of the photoreceptor due to this.
As the acid acceptor, various substances that function as acid acceptors can be used, but among them, hydrotalcite-like compounds or migrater (maggarat) excellent in dispersibility are preferable, and hydrotalcite-like compounds are particularly preferable.
In addition, when hydrotalcite or the like is used in combination with magnesium oxide or potassium oxide, a higher acid absorption effect can be obtained, and contamination of the photoreceptor can be prevented more surely.
The proportion of the acid absorber is preferably 0.1 part by mass or more and preferably 7 parts by mass or less relative to 100 parts by mass of the total amount of the rubber.
Further, as the additive, the same additives as those used in the inner layer 2, for example, a crosslinking accelerator, an acid absorber, a filler, a plasticizer, a processing aid, a deterioration inhibitor, a scorch retarder, a lubricant, a pigment, an antistatic agent, a flame retardant, a neutralizing agent, a nucleating agent, a co-crosslinking agent, and the like can be formulated.
The proportion of the additive is preferably set to the same extent as in the case of the inner layer 2.
Preparation of rubber composition
The rubber composition for the outer layer 4 containing the above-described respective components can be prepared in the same manner as in the prior art.
That is, the rubber composition for the outer layer 4 is obtained by first masticating the rubber, then kneading the components other than the crosslinking component, and finally kneading the components with the crosslinking component.
For kneading, a kneader, a Banbury mixer, an extruder, or the like can be used.
Manufacturing of developing roller 1
In order to manufacture the developing roller 1 shown in fig. 1 (a) and 1 (b) using the rubber composition for the inner layer 2 and the outer layer 4, for example, the two rubber compositions are fed into a double-layer extruder, co-extrusion-molded into a cylindrical shape having a laminated two-layer structure, and then the whole is crosslinked to form the inner layer 2 and the outer layer 4.
Alternatively, the rubber composition for the inner layer 2 is extruded into a tube shape, crosslinked to form the inner layer 2, and then a sheet of the rubber composition for the outer layer 4 is wound around the outer peripheral surface 3 thereof, formed into a tube shape by press molding or the like to crosslink, and integrated with the inner layer 2 to form the outer layer 4.
Then, when the formed laminate of the inner layer 2 and the outer layer 4 is heated and secondarily crosslinked by using an oven or the like, and then ground so as to have a predetermined outer diameter after cooling, a roll body 5 including the laminate is formed.
The thickness of the inner layer 2 may be arbitrarily set according to the structure, size, etc. of the mounted image forming apparatus.
The thickness of the outer layer 4 may be arbitrarily set, but is preferably 0.1mm or more, and preferably 2mm or less.
By setting the thickness of the outer layer 4 having a predetermined resistance value to the above range, the roller resistance value R is set to be equal to the predetermined roller resistance value 2 When the inner layers 2 of the roller body 5 are combined, the roller resistance R of the whole roller body 5 can be set 1 Is adjusted to the range.
Therefore, the following effects can be further improved: a good image can be formed which is excellent in both of the solid black density and the 2-dot density, in contrast and in reproducibility of a thin line, and which is free from density unevenness depending on the density of images adjacent in the lateral direction, and in which even if image formation is repeated, a gradual decrease in the image density of particularly solid black portions is suppressed.
As the polishing method, for example, various polishing methods such as dry vertical polishing may be used, or mirror polishing may be performed at the end of the polishing step to finish the polishing.
In this case, the releasability of the outer peripheral surface 8 is improved, and even when the oxide film 9 is not formed or by a synergistic effect with the formation of the oxide film 9, the adhesion of toner can be further suppressed more favorably, and contamination of the photoconductor or the like can be effectively prevented.
The shaft 7 may be inserted and fixed to the through hole 6 at any time point from the cutting of the cylindrical body as the raw material of the roller body 5 to the polishing.
Among them, it is preferable that after cutting, the shaft 7 is first subjected to secondary crosslinking and polishing in a state of being inserted into the through hole 6. This suppresses warping or deformation of the roller body 5 caused by expansion and contraction at the time of secondary crosslinking.
Further, by polishing while rotating about the shaft 7, the workability of the polishing can be improved, and runout of the outer peripheral surface 8 can be suppressed.
As described above, the shaft 7 may be inserted into the through hole 6 of the tubular body before the secondary crosslinking through the conductive adhesive, in particular, the conductive thermosetting adhesive, and then subjected to the secondary crosslinking, or may be press-fitted into the through hole 6 so that the outer diameter is larger than the inner diameter of the through hole 6.
In the former case, the cylindrical body is secondarily crosslinked by heating in the oven, and the thermosetting adhesive is cured at the same time, and the shaft 7 is mechanically fixed while being electrically bonded to the roller body 5.
In the latter case, the electrical connection and the mechanical fixing are performed simultaneously with the press-in.
Alternatively, the shaft 7 and the roller body 5 may be electrically joined and mechanically fixed by both methods as described above.
As described above, the oxide film 9 is preferably formed by irradiating the outer peripheral surface 8 of the roller body 5, which is the surface of the outer layer 4, with ultraviolet light.
That is, by irradiating the outer peripheral surface 8 of the roller body 5 with ultraviolet light of a predetermined wavelength for a predetermined time, only the rubber in the vicinity of the outer peripheral surface 8 is oxidized to form the oxide film 9, which is simple and efficient.
The oxide film 9 formed by irradiation of ultraviolet rays does not cause problems such as a coating film formed by a conventional coating agent, and is excellent in thickness uniformity, adhesion to the roller body 5, and the like.
Regarding the wavelength of the ultraviolet light to be irradiated, when the diene rubber in the rubber composition for the outer layer 4 is efficiently oxidized to form the oxide film 9 excellent in the above-mentioned function, it is preferably 100nm or more, and preferably 400nm or less, particularly 300nm or less.
The irradiation time is preferably 30 seconds or more, particularly 1 minute or more, and preferably 30 minutes or less, particularly 20 minutes or less.
The oxide film 9 may be formed by other methods, or may be formed without being formed.
Any intermediate layer may be interposed between the inner layer 2 and the outer layer 4, and one or more than two layers may be interposed therebetween.
However, in consideration of simplification of the structure of the roll body 5, the roll body 5 is preferably a two-layer structure in which the inner layer 2 and the outer layer 4 are directly laminated as shown in fig. 1 (a) and 1 (b).
The developing roller 1 of the present invention can be used in various image forming apparatuses using electrophotography, such as a laser printer, an electrostatic copier, a plain paper facsimile machine, and a combination machine of these.
Examples (example)
The present invention will be further described below based on examples, comparative examples, and conventional examples, but the constitution of the present invention is not necessarily limited to these examples.
Rubber composition (A) for inner layer 2
As the rubber, nper (Nipol) (registered trademark) DN3335 manufactured by NBR (japan rayleigh (ZEON) (strands)) was used, and the acrylonitrile content was as follows: 33.0%, medium-high nitrile NBR 55 parts by mass, nipPo (Nipol) IR2200 made by Japanese (ZEON) (Strand), non-oil-filled) 23 parts by mass, EPDM (Ai Sile En (esprene) (registered trademark) EPDM 505A made by Sumitomo chemical (Strand), ethylene content: 50%, diene content: 9.5% of non-oil-filled 22 parts by mass.
100 parts by mass of the total amount of the rubber was masticated using a Banbury mixer, and the following components were blended and kneaded.
TABLE 1
TABLE 1
| Composition of the components | Parts by mass |
| Ion salt | 0.1 |
| Cross-linking promoting adjuvants | 2.5 |
| Filler (B) | 10.0 |
| Processing aid | 0.5 |
The components in table 1 are as follows. In the table, the mass parts are 100 mass parts with respect to the total amount of rubber.
Ion salt: EF-N112, K-TFSI manufactured by electronic chemical synthesis (strand) of Mitsubishi material
Crosslinking promoting adjuvants: zinc oxide two, sakai chemical industry (Strand) manufacture
Filler: carbon black FEF, sist (set) (registered trademark) SO manufactured by eastern sea carbon (Strand)
Processing aid: SZ-2000 manufactured by Sakai chemical industry (Strand) zinc stearate
Then, the kneading was continued, and the following crosslinking components were blended and further kneaded to prepare a rubber composition (a) for the inner layer 2.
TABLE 2
TABLE 2
| Composition of the components | Parts by mass |
| Crosslinking agent | 1.05 |
| Accelerator DM | 1.5 |
| Accelerator TS | 0.5 |
The components in table 2 are as follows. In the table, the mass parts are 100 mass parts with respect to the total amount of rubber.
Crosslinking agent: golden flower stamp 5% oil immersed micro powder sulfur manufactured by Crane see chemical industry (stock)
Accelerator DM: di-2-benzothiazolyl disulfide, nakesala (noceler) (registered trademark) DM manufactured by the great interior emerging chemical industry (stock), thiazole-based accelerator
Accelerator TS: tetramethylthiuram monosulfide, su Xile (SANCELER) (registered trademark) TS, thiuram series accelerator manufactured by Sanxinchen chemical industry (Co., ltd.)
Rubber composition (B) for inner layer 2
A rubber composition (B) for the inner layer 2 was prepared in the same manner as the rubber composition (a), except that the amount of NBR was 35 parts by mass and the amount of IR was 43 parts by mass.
Rubber composition (C) for inner layer 2
NipPo (Nipol) DN401LL manufactured by Japanese rayleigh (ZEON) (stock) was used as the NBR with 35 parts by mass of low nitrile NBR (acrylonitrile content: a rubber composition (C) for the inner layer 2 was prepared in the same manner as the rubber composition (a) except that the amount of IR was 43 parts by mass at the same time of 18.0%.
Rubber composition (D) for inner layer 2
A rubber composition (D) for the inner layer 2 was produced in the same manner as the rubber composition (C), except that the amount of NBR was 55 parts by mass and the amount of IR was 23 parts by mass.
Rubber composition (E) for inner layer 2
A rubber composition (E) for the inner layer 2 was prepared in the same manner as the rubber composition (a), except that the amount of the ionic salt was 0.8 parts by mass based on 100 parts by mass of the total amount of the rubber.
Rubber composition (F) for inner layer 2
A rubber composition (F) for inner layer 2 was prepared in the same manner as the rubber composition (E), except that the same amount of SBR (JSR 1502, non-oil-extended) was used instead of IR.
Rubber composition (G) for inner layer 2
A rubber composition (G) for the inner layer 2 was prepared in the same manner as the rubber composition (a), except that the amount of IR was 10 parts by mass and the amount of EPDM was 35 parts by mass.
Rubber composition (H) for inner layer 2
As the rubber, ai Bien (epon) (registered trademark) 301l manufactured by GECO (osaka-soda) (strand), eo/EP/age=73/23/4 (molar ratio)), 12.5 parts by mass, nipper (Nipol) IR2200 manufactured by IR (japan rayleigh (ZEON) (strand), 41.25 parts by mass, ube pol (registered trademark) BR130B manufactured by BR (space, part, and 41.25 parts by mass, and xiaoprene (registered trademark) WRT manufactured by CR(s) and electrician (strand), and 5 parts by mass were used.
100 parts by mass of the total amount of the rubber was masticated using a Banbury mixer, and the following components were blended and kneaded.
TABLE 3
TABLE 3 Table 3
| Composition of the components | Parts by mass |
| Ion salt | 1.0 |
| Cross-linking promoting adjuvants | 2.5 |
| Filler (B) | 5.0 |
| Acid absorbing agent | 3.0 |
| Processing aid | 0.5 |
The components in table 3 are as follows. In the table, the mass parts are 100 mass parts with respect to the total amount of rubber.
Ion salt: EF-N112, K-TFSI manufactured by electronic chemical synthesis (strand) of Mitsubishi material
Crosslinking promoting adjuvants: zinc oxide two, sakai chemical industry (Strand) manufacture
Filler: carbon black FEF, sist (set) SO manufactured by eastern sea carbon (Strand)
Acid absorber: hydrotalcite like, DHT-4A (registered trademark) -2 manufactured by the cooperative chemical industry (strand)
Processing aid: SZ-2000 manufactured by Sakai chemical industry (Strand) zinc stearate
Then, the kneading was continued, and the following crosslinking components were blended and further kneaded to prepare a rubber composition (a) for the inner layer 2.
TABLE 4
TABLE 4 Table 4
| Composition of the components | Parts by mass |
| Crosslinking agent | 1.05 |
| Accelerator DM | 1.5 |
| Accelerator TS | 0.5 |
| Accelerator 22 | 0.3 |
| Promoter DT | 0.2 |
The components in table 4 are as follows. In the table, the mass parts are 100 mass parts with respect to the total amount of rubber.
Crosslinking agent: golden flower stamp 5% oil immersed micro powder sulfur manufactured by Crane see chemical industry (stock)
Accelerator DM: di-2-benzothiazolyl disulfide, nakesala (noceler) DM manufactured by the great emerging chemical industry (thigh), thiazole-based accelerator
Accelerator TS: tetramethylthiuram monosulfide, su Xile (SANCELER) TS, thiuram series accelerator manufactured by Sanxinchen chemical industry (Co., ltd.)
Accelerator 22: ethylene thiourea (Ai Sier (ACCEL) (registered trademark) 22-S, 2-mercaptoimidazoline manufactured by Chuangkou chemical industry (Co.) Ltd.)
Promoter DT: su Xile (SANCELER) DT, guanidine accelerators, manufactured by the Sanxinchem industry (Stratas) 1, 3-di-o-tolylguanidine
Rubber composition (J) for inner layer 2
A rubber composition (J) for the inner layer 2 was prepared in the same manner as the rubber composition (H), except that the amount of GECO was 15 parts by mass, the amount of IR was 40 parts by mass, and the amount of BR was 40 parts by mass.
Rubber composition (K) for inner layer 2
A rubber composition (K) for the inner layer 2 was prepared in the same manner as the rubber composition (H), except that the amount of GECO was 20 parts by mass, the amount of IR was 37.5 parts by mass, and the amount of BR was 37.5 parts by mass.
Roller resistance value R of inner layer 2 2 Measurement of (3)
The rubber compositions (A) to (F) for the inner layer 2 were extruded into a tube shape having an outer diameter of 16mm and an inner diameter of 6.5mm, mounted on a temporary shaft for crosslinking, and crosslinked in a vulcanizing tank at 160for 1 hour.
Subsequently, the crosslinked cylindrical body was reattached to a shaft 7 made of metal having an outer diameter 7.5mm, which was substantially the same as that of the user in the production of the developing roller 1, coated with a conductive thermosetting adhesive on the outer peripheral surface, and heated to 160 in an oven, and then attached to the shaft 7.
Then, both ends of the cylindrical body were shaped, and the outer peripheral surface 3 was subjected to vertical polishing using a cylinder grinder, and then subjected to mirror polishing as finish machining to finish it to an outer diameter 16mm, and further subjected to water washing, to prepare a sample in which only the inner layer 2 was integrated with the shaft 7.
Further, the roller resistance value R of the sample produced in the state of only the inner layer 2 was measured by the above-mentioned measuring method 2 (, 400V applied).
Rubber composition (I) for outer layer 4
As the rubber, ai Bien (portion) 301l manufactured by GECO (osaka-soda) (strand), eo/EP/age=73/23/4 (molar ratio), 12 parts by mass, JSR 1502 manufactured by SBR (strand), non-oil-filled 78 parts by mass, and CR (viewing WRT, non-oil-filled) 10 parts by mass were used.
100 parts by mass of the total amount of the rubber was masticated using a Banbury mixer, and the following components were blended and kneaded.
TABLE 5
TABLE 5
| Composition of the components | Parts by mass |
| Ion salt | 1.0 |
| Cross-linking promoting adjuvants | 2.5 |
| Filler (B) | 5.0 |
| Acid absorbing agent | 3.0 |
| Processing aid | 0.5 |
The components in table 5 are as follows. In the table, the mass parts are 100 mass parts with respect to the total amount of rubber.
Ion salt: EF-N112, K-TFSI manufactured by electronic chemical synthesis (strand) of Mitsubishi material
Crosslinking promoting adjuvants: zinc oxide two, sakai chemical industry (Strand) manufacture
Filler: carbon black (thermal black), xu #15 manufactured by Xu carbon (stock)
Acid absorber: hydrotalcite like, DHT-4A-2 manufactured by the synergetic chemical industry (strand)
Processing aid: SZ-2000 manufactured by Sakai chemical industry (Strand) zinc stearate
Then, the kneading was continued, and the following crosslinking components were blended and further kneaded to prepare a rubber composition (I) for the outer layer 4.
TABLE 6
TABLE 6
| Composition of the components | Parts by mass |
| Crosslinking agent | 1.05 |
| Accelerator DM | 1.5 |
| Accelerator TS | 0.5 |
| Accelerator 22 | 0.3 |
| Promoter DT | 0.2 |
The components in Table 6 are as follows. In the table, the mass parts are 100 mass parts with respect to the total amount of rubber.
Crosslinking agent: golden flower stamp 5% oil immersed micro powder sulfur manufactured by Crane see chemical industry (stock)
Accelerator DM: di-2-benzothiazolyl disulfide, nakesala (noceler) DM manufactured by the great emerging chemical industry (thigh), thiazole-based accelerator
Accelerator TS: tetramethylthiuram monosulfide, su Xile (SANCELER) TS, thiuram series accelerator manufactured by Sanxinchen chemical industry (Co., ltd.)
Accelerator 22: ethylene thiourea (Ai Sier (ACCEL) 22-S, 2-mercaptoimidazoline from Chuangkou chemical industry (Co.))
Promoter DT: su Xile (SANCELER) DT, guanidine accelerators, manufactured by the Sanxinchem industry (Stratas) 1, 3-di-o-tolylguanidine
Rubber composition (II) for outer layer 4
A rubber composition (II) for the outer layer 4 was prepared in the same manner as the rubber composition (I), except that the amount of GECO was 30 parts by mass and the amount of SBR was 60 parts by mass.
Rubber composition (III) for outer layer 4
A rubber composition (III) for the outer layer 4 was prepared in the same manner as the rubber composition (I), except that the amount of GECO was 20 parts by mass and the amount of SBR was 70 parts by mass.
Rubber composition (IV) for outer layer 4
A rubber composition (IV) for the outer layer 4 was prepared in the same manner as the rubber composition (I), except that the amount of GECO was 15 parts by mass and the amount of SBR was 75 parts by mass.
Rubber composition (V) for outer layer 4
A rubber composition (V) for the outer layer 4 was prepared in the same manner as the rubber composition (I), except that the amount of GECO was 12 parts by mass and the amount of SBR was 78 parts by mass.
Examples 1 to 6 and comparative examples 1 to 8
The rubber compositions (A) to (K) for the inner layer 2 and the rubber compositions (I) to (V) for the outer layer 4 were fed into a twin-layer extruder in the combinations shown in tables 7 to 9, and extruded into a tube having a two-layer structure of an outer diameter of 16mm, an inner diameter of 6.5mm and a thickness of 3.5mm as a tube body of the raw material of the inner layer 2, mounted on a temporary shaft for crosslinking, and crosslinked in a vulcanizing tank at 160for 1 hour.
Then, the crosslinked cylindrical body was reattached to a metal shaft 7 having an outer diameter of 7.5mm, which was coated with a conductive thermosetting adhesive on the outer peripheral surface, and heated to 160 in an oven, and then attached to the shaft 7.
Then, both ends of the cylindrical body were shaped, and the outer peripheral surface 8 was subjected to vertical polishing using a cylinder grinder, and then subjected to mirror polishing as finish machining to finish it to an outer diameter 16mm, thereby forming a roller body 5 having a two-layer structure of the inner layer 2 and the outer layer 4 and integrated with the shaft 7.
The thickness of the outer layer 4 is about 0.1mm to 2mm.
Then, after wiping the outer peripheral surface 8 of the formed roller body 5 with ethanol, the distance from the outer peripheral surface 8 to an Ultraviolet (UV) lamp was set to 50mm and set on PL21-200 manufactured by an Ultraviolet irradiation device [ Sen (Sen) specific light source (strand) ].
Then, the developing roller 1 was manufactured by rotating about an axis by 90 and irradiating ultraviolet rays having wavelengths of 184.9nm and 253.7nm every 15 minutes, thereby forming an oxide film 9 on the outer peripheral surface 8.
Existing examples 1 to 4
The rubber compositions (II) to (V) for the outer layer 4 were used alone, extruded into a tube shape having an outer diameter of 16mm and an inner diameter of 6mm, mounted on a temporary shaft for crosslinking, and crosslinked in a vulcanizing tank at 160for 1 hour.
Then, the crosslinked cylindrical body was reattached to a metal shaft 7 having an outer diameter of 7.5mm, which was coated with a conductive thermosetting adhesive on the outer peripheral surface, and heated to 160 in an oven, and then attached to the shaft 7.
Then, both ends of the cylindrical body were shaped, and the outer peripheral surface 8 was subjected to longitudinal polishing using a cylinder grinder, and then subjected to mirror polishing as finish machining to finish it to an outer diameter 16mm, thereby forming a roller body having a single-layer structure including the rubber composition for the outer layer 4 and integrated with the shaft 7.
Then, after wiping the outer peripheral surface of the formed roller body with ethanol, the distance from the outer peripheral surface to the UV lamp was set to 50mm and set on PL21-200 manufactured by ultraviolet irradiation device [ Sen (Sen) special light source (strand) ].
Further, the developing roller was manufactured by rotating about an axis by 90 and irradiating ultraviolet rays having wavelengths of 184.9nm and 253.7nm every 15 minutes, thereby forming an oxide film on the outer peripheral surface.
The developing roller 1 manufactured in each of the above examples, comparative examples, and conventional examples was subjected to the following tests, and the characteristics thereof were evaluated.
Roller resistance R of the entirety of the roller body 5 1 Measurement of (3)
The roller resistance value R of the whole roller body 5 of the manufactured developing roller 1 was measured by the above-described measuring method 1 (, 400V applied).
Determination of pure Black concentration
The developing roller thus produced was mounted on a laser printer (HL-2240D produced by brother industries (Brother Industries) (strand)), and 1 sheet of 3cm square solid black image was immediately subjected to image formation in an environment of a temperature of 23.5 and a relative humidity of 55% after continuously image formation of 1% density image on 30 sheets of plain paper.
Then, the image density was measured at 5 arbitrary points on the formed solid black image using a reflection densitometer manufactured by vidojet X-Rite (thigh), and the average value was obtained and set as the solid black density. The pure black concentration of 1.30 or more is qualified.
Determination of 2-Point concentration
Immediately after continuously forming 1% density images on 4000 plain papers, 1 isolated 2-dot image was formed with circles juxtaposed on square lattices of about 80 m in lattice length, similarly to the true black density.
Then, the image density was measured by the same reflectometer used for 5 arbitrary points on the formed isolated 2-point image, and the average value was obtained and set as 2-point density. The 2-point concentration exceeding 0.02 was qualified.
Evaluation of concentration unevenness
Immediately after continuously forming 1% density images on 4000 plain papers in the same manner as the solid black density, 1 half-tone portion having a width of 3cm was immediately formed on an image of a solid black portion adjacent to the half-tone portion by a distance of 5mm in a lateral direction perpendicular to the paper feeding direction.
Then, the halftone portion of the formed image was observed, and the non-uniformity was evaluated as good (o), and the non-uniformity was evaluated as bad (x).
Measurement of durable image Density
The developing roller was mounted on a laser printer (HL-2240D manufactured by brother industries (Brother Industries) (strand)), and 1 sheet of 3cm square plain black image was immediately subjected to image formation immediately after continuously image formation of 1% density image on 3000 sheets of plain paper in an environment of a temperature of 23.5 and a relative humidity of 55%.
Then, the image density was measured at 5 arbitrary points on the formed solid black image using a reflection densitometer manufactured by vidojet X-Rite (thigh), and the average value was obtained and set as the durable image density. The durable image density of 1.30 or more was determined to be acceptable.
The results are shown in tables 7 to 9.
TABLE 7
TABLE 7
TABLE 8
TABLE 8
TABLE 9
TABLE 9
From the results of conventional examples 1 to 4 in table 9, it was determined that the pure black concentration could not be achieved at the same time as the 2-point concentration in the single-layer roll body.
On the other hand, from the results of examples 1 to 6 and comparative examples 1 to 8 in tables 7 to 9, it was determined that the roller resistance value R was calculated by 1 R 2 The combination of the inner layer 2 and the outer layer 4 satisfying the formulas (1) and (2) can form an image which is excellent in both contrast and fine line reproducibility while improving both the solid black density and the 2-dot density.
In addition, it is also determined that occurrence of density unevenness on the image depending on the density of the images adjacent in the lateral direction can be suppressed.
Further, from the results of examples 1 to 6 and comparative examples 3 to 8, it was also determined that the decrease in image density, particularly in the pure black portion, can be suppressed even if image formation is repeated by providing the inner layer 2 with a layer containing NBR and an ion conductive agent to impart ion conductivity.
Claims (2)
1. A developing roller, characterized in that:
comprising a roller body comprising: an inner layer containing an elastic material and having a cylindrical shape; and an outer layer laminated on the outer peripheral surface of the inner layer and including an elastic material,
the inner layer comprises a crosslinked product comprising a rubber having an acrylonitrile butadiene rubber, and a rubber composition of an ion conductive agent,
the rubber further comprises at least one selected from the group consisting of isoprene rubber, butadiene rubber and styrene butadiene rubber, and an ethylene propylene diene rubber,
roll resistance R at 400V applied to the entirety of the roll body 1 (), and a roller resistance value R at 400V applied in a state of only the inner layer 2 () satisfies the formula (1) and the formula (2):
0.1logR 2 -logR 1 1.0 1
6.5logR 2 8.5 2
2. the developing roller according to claim 1, wherein:
The ion conductive agent is a salt of anions and cations with fluorine groups and sulfonyl groups.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-112145 | 2018-06-12 | ||
| JP2018112145A JP7075591B2 (en) | 2018-06-12 | 2018-06-12 | Develop roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110597040A CN110597040A (en) | 2019-12-20 |
| CN110597040B true CN110597040B (en) | 2024-04-16 |
Family
ID=68852588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910490939.3A Active CN110597040B (en) | 2018-06-12 | 2019-06-06 | Developing roller |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7075591B2 (en) |
| CN (1) | CN110597040B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006084726A (en) * | 2004-09-15 | 2006-03-30 | Fuji Xerox Co Ltd | Conductive roll and image forming apparatus equipped with same |
| JP2007276152A (en) * | 2006-04-03 | 2007-10-25 | Canon Chemicals Inc | Conductive rubber roller, its manufacturing method and electrophotographic apparatus |
| CN102243459A (en) * | 2010-05-12 | 2011-11-16 | 住友橡胶工业株式会社 | Semiconductive roller and charging roller using the same |
| CN102566371A (en) * | 2011-12-31 | 2012-07-11 | 深圳市乐普泰科技股份有限公司 | Conductive rubber roller and imaging device |
| JP2013097118A (en) * | 2011-10-31 | 2013-05-20 | Sumitomo Rubber Ind Ltd | Semiconductive roller |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3424485B2 (en) * | 1997-03-07 | 2003-07-07 | 富士ゼロックス株式会社 | Semiconductive roll |
| JP2005134503A (en) * | 2003-10-29 | 2005-05-26 | Sumitomo Rubber Ind Ltd | Conductive rubber roller having two layer structure |
| KR100739695B1 (en) * | 2005-02-16 | 2007-07-13 | 삼성전자주식회사 | Tubular developing roller, method of preparing the same, and electrophotographic imaging apparatus comprising the same |
| JP2008152202A (en) * | 2006-12-20 | 2008-07-03 | Yamauchi Corp | Conductive rubber roller and method of manufacturing the same |
| JP2011164177A (en) * | 2010-02-05 | 2011-08-25 | Canon Chemicals Inc | Transfer roller |
| JP2014162103A (en) * | 2013-02-25 | 2014-09-08 | Sumitomo Rubber Ind Ltd | Method for manufacturing electroconductive roller, electroconductive roller, and image forming device |
| JP6576709B2 (en) * | 2015-06-29 | 2019-09-18 | 住友理工株式会社 | Conductive member for electrophotographic equipment |
-
2018
- 2018-06-12 JP JP2018112145A patent/JP7075591B2/en active Active
-
2019
- 2019-06-06 CN CN201910490939.3A patent/CN110597040B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006084726A (en) * | 2004-09-15 | 2006-03-30 | Fuji Xerox Co Ltd | Conductive roll and image forming apparatus equipped with same |
| JP2007276152A (en) * | 2006-04-03 | 2007-10-25 | Canon Chemicals Inc | Conductive rubber roller, its manufacturing method and electrophotographic apparatus |
| CN102243459A (en) * | 2010-05-12 | 2011-11-16 | 住友橡胶工业株式会社 | Semiconductive roller and charging roller using the same |
| JP2013097118A (en) * | 2011-10-31 | 2013-05-20 | Sumitomo Rubber Ind Ltd | Semiconductive roller |
| CN102566371A (en) * | 2011-12-31 | 2012-07-11 | 深圳市乐普泰科技股份有限公司 | Conductive rubber roller and imaging device |
Non-Patent Citations (2)
| Title |
|---|
| 激光印字机鼓组件的再生利用和维护(一);郭志明;广东印刷(第01期);全文 * |
| 磁性聚合物研究与应用现状;杨鹏飞, 孟凡君, 鲁成学, 吴秀荣, 刘文涛;磁性材料及器件(第04期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110597040A (en) | 2019-12-20 |
| JP2019215422A (en) | 2019-12-19 |
| JP7075591B2 (en) | 2022-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108073057B (en) | Semiconductive roller | |
| CN105295133B (en) | Semi-conductive roller | |
| US20140342892A1 (en) | Semiconductive roller | |
| CN107663315B (en) | Conductive rubber composition, transfer roller, method for producing the same, and image forming apparatus | |
| JP2018194790A (en) | Conductive rubber composition, transfer roller and image forming apparatus | |
| JP5777489B2 (en) | Semi-conductive roller | |
| JP2006145636A (en) | Conductive roll | |
| CN105419016A (en) | Electrically Conductive Rubber Composition, And Developing Roller | |
| CN110597040B (en) | Developing roller | |
| CN110597039B (en) | Developing roller | |
| CN110568737B (en) | Developing roller | |
| JP7474409B2 (en) | Developing roller | |
| CN110591181B (en) | Rubber composition and conductive roller using same | |
| US10503094B2 (en) | Development roller | |
| CN112882362A (en) | Developing roller | |
| CN111138729B (en) | Developing roller | |
| CN113703298A (en) | Developing roller and method for manufacturing the same | |
| JP7404863B2 (en) | Conductive rubber composition, conductive rubber roller, image forming device | |
| CN112782949A (en) | Conductive roller and method for manufacturing same | |
| CN108070238B (en) | Semiconductive roller | |
| US20190004447A1 (en) | Charging roller, and method of producing the same | |
| US20180081297A1 (en) | Developing roller | |
| CN112904686A (en) | Developing roller and method for manufacturing the same | |
| CN113201174A (en) | Rubber composition, conductive roller, and image forming apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |