JPH04182665A - Production of toner for electrophotography - Google Patents
Production of toner for electrophotographyInfo
- Publication number
- JPH04182665A JPH04182665A JP2311791A JP31179190A JPH04182665A JP H04182665 A JPH04182665 A JP H04182665A JP 2311791 A JP2311791 A JP 2311791A JP 31179190 A JP31179190 A JP 31179190A JP H04182665 A JPH04182665 A JP H04182665A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- solvent
- resin
- melting point
- resin particles
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 229920005989 resin Polymers 0.000 claims abstract description 60
- 239000011347 resin Substances 0.000 claims abstract description 60
- 239000002245 particle Substances 0.000 claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 238000002844 melting Methods 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims abstract description 22
- 230000008018 melting Effects 0.000 claims abstract description 20
- 239000011247 coating layer Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 18
- 239000003989 dielectric material Substances 0.000 claims description 3
- 238000011282 treatment Methods 0.000 abstract description 8
- 239000003086 colorant Substances 0.000 abstract description 7
- 239000000843 powder Substances 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 238000001694 spray drying Methods 0.000 abstract description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004090 dissolution Methods 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000003595 mist Substances 0.000 abstract description 3
- 239000000049 pigment Substances 0.000 abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011787 zinc oxide Substances 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000001993 wax Substances 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 239000006247 magnetic powder Substances 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 239000004645 polyester resin Substances 0.000 description 4
- 229920001225 polyester resin Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 3
- 238000011276 addition treatment Methods 0.000 description 3
- 239000006231 channel black Substances 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- 238000012695 Interfacial polymerization Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 239000012461 cellulose resin Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000006233 lamp black Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012170 montan wax Substances 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- OSNILPMOSNGHLC-UHFFFAOYSA-N 1-[4-methoxy-3-(piperidin-1-ylmethyl)phenyl]ethanone Chemical compound COC1=CC=C(C(C)=O)C=C1CN1CCCCC1 OSNILPMOSNGHLC-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- SOGAXMICEFXMKE-UHFFFAOYSA-N alpha-Methyl-n-butyl acrylate Natural products CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000012164 animal wax Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- POJOORKDYOPQLS-UHFFFAOYSA-L barium(2+) 5-chloro-2-[(2-hydroxynaphthalen-1-yl)diazenyl]-4-methylbenzenesulfonate Chemical compound [Ba+2].C1=C(Cl)C(C)=CC(N=NC=2C3=CC=CC=C3C=CC=2O)=C1S([O-])(=O)=O.C1=C(Cl)C(C)=CC(N=NC=2C3=CC=CC=C3C=CC=2O)=C1S([O-])(=O)=O POJOORKDYOPQLS-UHFFFAOYSA-L 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004204 candelilla wax Substances 0.000 description 1
- 235000013868 candelilla wax Nutrition 0.000 description 1
- 229940073532 candelilla wax Drugs 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012674 dispersion polymerization Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- IUJAMGNYPWYUPM-UHFFFAOYSA-N hentriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC IUJAMGNYPWYUPM-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 235000010187 litholrubine BK Nutrition 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000012184 mineral wax Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000012169 petroleum derived wax Substances 0.000 description 1
- 235000019381 petroleum wax Nutrition 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011802 pulverized particle Substances 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000012178 vegetable wax Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、電子写真法により静電荷像を現像するための
トナーの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing a toner for developing an electrostatic image by electrophotography.
［従来の技術］
従来の電子写真用トナーの製造方法は、特公昭４９−１
５８８による相分離法、界面重合法等のマイクロカプセ
ル法や特公昭５９−１１９０２によるポリエステル樹脂
を用いた低温定着用トナーの製造方法があった。[Prior Art] A conventional method for producing toner for electrophotography is
There are microcapsule methods such as a phase separation method and an interfacial polymerization method according to No. 588, and a method for manufacturing a toner for low temperature fixing using a polyester resin according to Japanese Patent Publication No. 59-11902.
［発明が解決しようとする課題］
しかし、従来の電子写真用トナーの製造方法で特に低温
定着用トナーの製造方法は、低融点の内核を高融点の外
殻でカプセル化する方法に相分離法や界面重合法等を用
いているため、外殻を厚膜化することが困難であり、こ
の電子写真用トナーを使用して現像を行った場合、現像
器の攪拌によるトナー劣化が生じ、経時的に印刷性が但
下するという問題点があった。また、カプセル化電子写
真用トナーでは、荷電制御剤、流動性向上剤をトナーの
表面に外添して機能発現させているが、外殻を壊さない
ために強い外温処理ができず、荷電制御剤や流動性向上
剤が剥離して地汚れの原因になるという問題点があった
。[Problems to be Solved by the Invention] However, conventional methods for producing toner for electrophotography, especially for toner for low-temperature fixing, involve a method of encapsulating a low-melting-point inner core with a high-melting-point outer shell, a phase separation method, etc. It is difficult to make the outer shell thick because it uses interfacial polymerization, etc., and when this electrophotographic toner is used for development, the toner deteriorates due to agitation in the developing device and deteriorates over time. However, there was a problem in that printability deteriorated. In addition, in encapsulated electrophotographic toner, a charge control agent and a fluidity improver are externally added to the surface of the toner to express its functions, but in order not to destroy the outer shell, strong external temperature treatment is not possible, and the charge There was a problem in that the control agent and fluidity improver peeled off, causing scumming.
また、ポリエステル樹脂を用いた低温定着用トナーでは
、定着温度が樹脂の熱特性で訣まるためさらに低温で定
着を行うことが困難であると言う問題点を有していた。Furthermore, low-temperature fixing toners using polyester resins have a problem in that it is difficult to perform fixing at even lower temperatures because the fixing temperature is determined by the thermal properties of the resin.
そこで本発明はこのような問題点を解決するもので、そ
の目的とするところは、電子写真用トナーの外殻の樹脂
被覆層に荷電制御剤と流動性向上剤を含有して形成し、
地汚れ等のトナー劣化が生じない耐久性ある低温定着用
トナーを作成するための製造方法を提供するところにあ
る。The present invention is intended to solve these problems, and its purpose is to form a resin coating layer on the outer shell of an electrophotographic toner containing a charge control agent and a fluidity improver.
An object of the present invention is to provide a manufacturing method for producing a durable low-temperature fixing toner that does not cause toner deterioration such as scumming.
［課題を解決するための手段］
本発明の電子写真用トナーの製造方法は、誘電体上に形
成された静電荷像を顕像化するための電子写真用トナー
の製造方法において、少なくとも低融点性のトナー内核
表面に高融点性の樹脂粒子、荷電制御剤、流動性向上剤
を外添する工程と、溶剤で処理して低融点性のトナー内
核表面に荷電制御剤と流動性向上剤を含有する高融点性
の樹脂被覆層を形成する工程とを有することを特徴とす
る。[Means for Solving the Problems] A method for producing an electrophotographic toner of the present invention is a method for producing an electrophotographic toner for visualizing an electrostatic charge image formed on a dielectric material. A process of externally adding high-melting point resin particles, a charge control agent, and a fluidity improver to the surface of a low-melting toner inner core, and a process of adding a charge control agent and a fluidity improver to the surface of a low-melting toner core by treating with a solvent. and forming a high melting point resin coating layer containing the resin.
［作用コ
本発明の電子写真用トナーの製造方法は、低融点性の結
着成分を含むトナー内核の表面に高融点性の樹脂粒子と
荷電制御剤、流動性向上剤を付着してから樹脂粒子を溶
剤で溶解し、樹脂被覆層を形成しているため、荷電制御
剤、流動性向上剤を外添処理して付着する方法とは異な
りカプセルの外殻を破壊する事なく荷電制御剤、流動性
向上剤を樹脂被覆層中に添加・混合することが可能であ
り、また荷電制御剤、流動性向上剤が充分樹脂層中に埋
め込まれるためにｌ・ナーからの剥離がなく、トナー劣
化が生じない耐久性ある低温定着用トナーを作成するこ
とが可能になる。[Function] In the method for producing an electrophotographic toner of the present invention, high melting point resin particles, a charge control agent, and a fluidity improver are attached to the surface of the toner inner core containing a low melting point binding component, and then the resin is Because the particles are dissolved in a solvent to form a resin coating layer, the charge control agent and fluidity improver can be applied without destroying the outer shell of the capsule, unlike the method of attaching the charge control agent and fluidity improver by external addition. It is possible to add and mix the fluidity improver into the resin coating layer, and since the charge control agent and fluidity improver are sufficiently embedded in the resin layer, there is no peeling from the l-toner and toner deterioration. It becomes possible to create a durable toner for low-temperature fixing that does not cause.
以下実施例により本発明の詳細を示す。The details of the present invention will be shown below with reference to Examples.
［実施例コ
第１図は本発明の電子写真用トナーの製造方法のフロー
チャートである。[Example 1] FIG. 1 is a flowchart of the method for producing an electrophotographic toner of the present invention.
結着成分１と着色材２は混練７、微粉砕８してトナー内
核９が作成される。The binding component 1 and the coloring material 2 are kneaded 7 and pulverized 8 to form a toner inner core 9.
結着成分１は、低融点性の樹脂、ワックス類が用いられ
、キャンデリラワックス、カルナバワックス等の植物系
ワックス、みつろう、ラノリン等の動物系ワックス、モ
ンタンワックス等の鉱物系ワックス、パラフィンワック
ス、マイクロクリスタリンワックス等の石油系ワックス
、ポリエチレンワックス、フィッシャートロブスワック
ス等の合成炭化水素系ワックス、モンタンワックス誘導
体、パラフィンワックス誘導体等の変性ワックス、硬化
ひまし油、硬化ひまし油誘導体等の水素化ワックス、脂
肪酸、酸アミド、エステル、ケトン等の合成ワックス類
、およびポリアクリレート誘導体、ポリメタクリレート
誘導体、ポリスチレン誘導体、ブチラール樹脂、ポリエ
ステル樹脂、セルロース樹脂、ポリエチレン樹脂、ポリ
プロピレン樹脂、酢酸ビニル樹脂、さらにこれらの共重
合体の熱可塑性樹脂が使用され、これらが単独または複
数混合されて使用される。As the binding component 1, low-melting resins and waxes are used, such as vegetable waxes such as candelilla wax and carnauba wax, animal waxes such as beeswax and lanolin, mineral waxes such as montan wax, paraffin wax, Petroleum waxes such as microcrystalline wax, synthetic hydrocarbon waxes such as polyethylene wax and Fischer Trobus wax, modified waxes such as montan wax derivatives and paraffin wax derivatives, hydrogenated waxes such as hydrogenated castor oil and hydrogenated castor oil derivatives, fatty acids, Synthetic waxes such as acid amides, esters, and ketones, as well as polyacrylate derivatives, polymethacrylate derivatives, polystyrene derivatives, butyral resins, polyester resins, cellulose resins, polyethylene resins, polypropylene resins, vinyl acetate resins, and copolymers of these. Thermoplastic resins are used, and these may be used alone or in combination.
着色材２は、黄色用としてベンジジンイエロー、ジスア
ゾイエロー、赤色用として、カーミン６Ｂ、レーキレッ
ドＣ、ビグメントスカーレット、キナクリドン、青色用
としてフタロシアニンブルー、インダスレンブルー、黒
色用としてファーネスブラック、ランプブラック、アセ
チレンブラック、チャンネルブラック等のカーボンブラ
ック類等の顔染料が使用される。Colorant 2 includes benzidine yellow and disazo yellow for yellow, carmine 6B, lake red C, pigment scarlet, and quinacridone for red, phthalocyanine blue and industhrene blue for blue, and furnace black, lamp black, and lamp black for black. Facial dyes such as carbon blacks such as acetylene black and channel black are used.
混練７は、連続式ではスクリュー押し出し機、バッチ式
ではバンバリーミキサ−等、湿式混練ではホモジナイザ
ー、コロイドミル、ボールミル等が使用される。微粉砕
８は、ジェットミル、カッターミル、オングミル、ボー
ルミル等により粒径５〜２０μｍの微粉体に粉砕され、
トナー内核９が得られる。For kneading 7, a screw extruder is used in a continuous type, a Banbury mixer or the like is used in a batch type, and a homogenizer, a colloid mill, a ball mill, etc. is used in a wet kneading. The pulverization 8 is pulverized into a fine powder with a particle size of 5 to 20 μm using a jet mill, a cutter mill, an angular mill, a ball mill, etc.
A toner inner core 9 is obtained.
現像方法に磁気ブラシ現像法を用いる場合は、トナー内
核９にフェライト、マグネタイト、鉄、クロム、ニッケ
ル等の磁性材料からなる磁性粉が添加される。また、着
色材２、磁性粉を結着成分に分散するためにアニオン性
界面活性剤類、カチオン性界面活性剤類、ノニオン性界
面活性剤類、ポリアクリル酸塩誘導体、ポリメタクリル
酸塩誘導体、無水マレイン酸共重合体等のポリカルボン
酸塩類、ツルスパース系超分散剤等の分散剤を添加する
ことも可能である。When a magnetic brush development method is used as the development method, magnetic powder made of a magnetic material such as ferrite, magnetite, iron, chromium, or nickel is added to the toner inner core 9. In addition, colorant 2, anionic surfactants, cationic surfactants, nonionic surfactants, polyacrylate derivatives, polymethacrylate derivatives, for dispersing the magnetic powder in the binding component, It is also possible to add a dispersant such as a polycarboxylic acid salt such as a maleic anhydride copolymer or a trussperse super dispersant.
続いて、トナー内核９に樹脂粒子３、荷電制御剤４、流
動性向上剤５を外添処理１０して樹脂粒子外添トナー内
核１１が得られる。Subsequently, resin particles 3, a charge control agent 4, and a fluidity improver 5 are externally added to the toner inner core 9 in a process 10 to obtain a toner inner core 11 with resin particles externally added thereto.
樹脂粒子３は、トナー内核９の結着成分１よりも高融点
性の樹脂類が用いられ、ポリアクリレート誘導体、ポリ
メタクリレート誘導体、ポリスチレン誘導体、ポリエチ
レン樹脂、ポリプロピレン樹脂、酢酸ビニル樹脂、およ
びこれらの共重合体で乳化重合、懸濁重合、分散重合等
の重合法で作成される。また、ポリエステル樹脂、セル
ロース樹脂、ブチラール樹脂等の微粉砕粒子、噴霧乾燥
粒子を使用することも可能である。樹脂粒子３の粒子径
は０．１μｍから３μｍの任意の粒径に調整でき、トナ
ー外殻に形成される樹脂層の膜厚に応じて調整される。The resin particles 3 are made of a resin having a higher melting point than the binding component 1 of the toner inner core 9, and include polyacrylate derivatives, polymethacrylate derivatives, polystyrene derivatives, polyethylene resins, polypropylene resins, vinyl acetate resins, and co-resins thereof. It is a polymer made by polymerization methods such as emulsion polymerization, suspension polymerization, and dispersion polymerization. It is also possible to use finely pulverized particles or spray-dried particles of polyester resin, cellulose resin, butyral resin, etc. The particle size of the resin particles 3 can be adjusted to any particle size from 0.1 μm to 3 μm, and is adjusted depending on the thickness of the resin layer formed on the toner outer shell.
荷電制御剤４は、ニグロシン、金属レーキ顔料、有機酸
金属塩類、高分子カルボン酸類等が使用される。As the charge control agent 4, nigrosine, metal lake pigments, organic acid metal salts, polymeric carboxylic acids, etc. are used.
流動性向上剤５は、酸化チタン、酸化亜鉛、シリカ、フ
ッ素樹脂等の微粉末が使用される。As the fluidity improver 5, fine powder of titanium oxide, zinc oxide, silica, fluororesin, etc. is used.
外添処理１０は、ボールミル、シェーカー、オングミル
等を使用したメカノケミカル法等が使用される。For the external addition treatment 10, a mechanochemical method using a ball mill, shaker, ong mill, etc. is used.
樹脂粒子外添トナー内核１１は、溶剤６により被膜処理
１２して電子写真用トナー１３が作成される。The toner inner core 11 with resin particles externally added is subjected to coating treatment 12 with a solvent 6 to produce an electrophotographic toner 13.
溶剤６は、樹脂粒子３を溶解し、荷電制御剤４、流動性
向上剤５を樹脂被覆層中に分散・固定するために使用さ
れ、ジクロロメタン、クロロホルム、四塩化炭素、ジク
ロロエタン、クロロベンゼン等のハロゲン化炭化水素類
、メタノール、メチルセルソルブ、ベンジルアルコール
等のアルコール類、ジオキサン、テトラヒドロフラン、
ペンシルエーテル等のエーテル類等、酢酸エチル、酢酸
ブチル等のエステル類、フルフラール、アセトン、メチ
ルエチルケトン、シクロヘキサノン等のケトン類、ベン
ゼン、トルエン、キシレン等の芳香族類、ニトロベンゼ
ン、アセトニトリル、ジエチルアミン、アニリン、ジメ
チルホルムアミド、ピロリドン等の窒素化合物が用いら
れる。The solvent 6 is used to dissolve the resin particles 3 and disperse and fix the charge control agent 4 and fluidity improver 5 in the resin coating layer, and is used to dissolve halogens such as dichloromethane, chloroform, carbon tetrachloride, dichloroethane, and chlorobenzene. Hydrocarbons, methanol, methylcellosolve, alcohols such as benzyl alcohol, dioxane, tetrahydrofuran,
Ethers such as pencil ether, esters such as ethyl acetate and butyl acetate, ketones such as furfural, acetone, methyl ethyl ketone, and cyclohexanone, aromatics such as benzene, toluene, and xylene, nitrobenzene, acetonitrile, diethylamine, aniline, and dimethyl. Nitrogen compounds such as formamide and pyrrolidone are used.
被膜処理１２は、溶解速度が遅い樹脂粒子／溶剤系では
樹脂粒子外添トナー内核を溶剤に分散し、濾過乾燥もし
くはスプレードライ法により作成する。溶解速度が早い
系では樹脂粒子外添トナー内核の溶剤蒸気処理、溶剤ミ
スト処理、樹脂粒子３を溶解する溶剤６と樹脂粒子３、
トナー内核９を溶解しない溶剤の樹脂粒子外添トナー内
核分散液をノズル直前で混合し、スプレードライにて乾
燥被膜化する方法等が使用される。In the case of a resin particle/solvent system in which the dissolution rate is slow, the film treatment 12 is performed by dispersing the toner inner core added externally to the resin particles in a solvent, and performing filtration drying or spray drying. In a system where the dissolution rate is fast, the inner core of the toner added outside the resin particles is treated with solvent vapor, solvent mist treatment, and the solvent 6 and the resin particles 3 that dissolve the resin particles 3 are used.
A method is used in which a toner core dispersion liquid containing resin particles externally added with a solvent that does not dissolve the toner core 9 is mixed immediately before a nozzle, and a dry film is formed by spray drying.
［実施例１］
低融点性結着成分
パラフィンワックス
０ ｇ
エチレン−酢酸ビニル共重合体
７ ｇ
着色材
チャンネルブラック ３ｇ
磁性粉
マグネタイト ４０ ｇ上記をバッチ
式混練機により混合混線を行い、ジェットミルにより１
０〜１５μｍの微粒子に微粉砕してトナー内核を得た。[Example 1] Low melting point binding component paraffin wax 0 g Ethylene-vinyl acetate copolymer 7 g Colorant channel black 3 g Magnetic powder magnetite 40 g The above was mixed by a batch kneader, and mixed by a jet mill.
The toner core was obtained by pulverizing it into fine particles of 0 to 15 μm.
トナー内核全量に対して
高融点性樹脂粒子
メチルメタクリレート−ブチルメタ
クリレート共重合体
（粒径０． ３μｍ）
（トナー内核表面被覆率２００％）
３ ｇ
荷電制御剤
ニグロシン ３ｇ
流動性向上剤
疎水性シリカ １ｇ
を混合、オングミルにより外添処理を行い、樹脂粒子外
添トナー内核を得た。High melting point resin particles methyl methacrylate-butyl methacrylate copolymer (particle size 0.3 μm) (toner inner core surface coverage 200%) 3 g Charge control agent nigrosine 3 g Fluidity improver hydrophobic silica 1 g were mixed and externally added using an ong mill to obtain a toner inner core with resin particles externally added.
樹脂粒子外添トナー内核を粉体供給ノズルから吐出しな
がら、同時に樹脂粒子を溶解する溶剤としてトルエンを
２流体ノズルからミスト状で吹き付けて被膜処理を行い
樹脂粒子の溶解と荷電制御剤、流動性向上剤を含有する
樹脂被覆層の形成を行い、電子写真用トナーを作成した
。これを「トナー１」とする。While discharging the toner core added outside the resin particles from the powder supply nozzle, at the same time spraying toluene in a mist form from a two-fluid nozzle as a solvent to dissolve the resin particles, coating treatment is performed to dissolve the resin particles, charge control agent, and fluidity. A resin coating layer containing an improving agent was formed to produce an electrophotographic toner. This is referred to as "toner 1".
［比較例１］
低融点性結着成分
パラフィンワックス
０ ｇ
エチレン−酢酸ビニル共重合体
７ ｇ
着色材
チャンネルブラック ３ｇ
磁性粉
マグネタイト ４０ ｇ上記をバッチ
式混線機により混合混練を行い、ジェットミルにより１
０〜１５μｍの微粒子に微粉砕してトナー内核を得た。[Comparative Example 1] Low melting point binding component paraffin wax 0 g Ethylene-vinyl acetate copolymer 7 g Colorant channel black 3 g Magnetic powder magnetite 40 g The above was mixed and kneaded using a batch mixer, and then mixed and kneaded using a jet mill.
The toner core was obtained by pulverizing it into fine particles of 0 to 15 μm.
トナー内核を高融点性樹脂であるメチルメタクリレート
−ブチルメタクリレート共重合体のアセトン溶液に分散
し、メタノールを添加して界面沈澱反応を行い、続いて
噴霧乾燥を行ってトナー内核表面上にメチルメタクリレ
ート−ブチルメタクリレート共重合体の被覆層を形成し
た。さらに、荷電制御剤としてニグロシン、流動性向上
剤として疎水性シリカを外添して電子写真用トナーを作
成した。これを「トナー２」とする。The toner inner core is dispersed in an acetone solution of methyl methacrylate-butyl methacrylate copolymer, which is a high melting point resin, and methanol is added to perform an interfacial precipitation reaction, followed by spray drying to form methyl methacrylate on the surface of the toner inner core. A coating layer of butyl methacrylate copolymer was formed. Furthermore, an electrophotographic toner was prepared by externally adding nigrosine as a charge control agent and hydrophobic silica as a fluidity improver. This will be referred to as "toner 2".
［実施例２］
低融点性結着成分
ポリエチレンワックス
０ ｇ
エチレン−無水マレイン酸共重合体
７ ｇ
着色材
アセチレンブラック ３ｇ
上記をバッチ式混練機により混合混練を行い、ジェット
ミルにより１０〜１５μｍの微粒子に微粉砕してトナー
内核を得た。[Example 2] Low melting point binding component polyethylene wax 0 g Ethylene-maleic anhydride copolymer 7 g Colorant acetylene black 3 g The above was mixed and kneaded using a batch kneader, and fine particles of 10 to 15 μm were prepared using a jet mill. The powder was pulverized to obtain a toner inner core.
トナー内核全量に対して
高融点性樹脂粒子
スチレン−ブチルメタクリレート
共重合体（粒径０．５μｍ）
６ ｇ
荷電制御剤
ステアリン酸亜鉛 ４ｇ
流動性向上剤
フッ素樹脂 ２ｇ
を混合、ボールミルにより外添処理を行い、樹脂粒子外
添トナー内核を得た。6 g of high melting point resin particles styrene-butyl methacrylate copolymer (particle size 0.5 μm), 4 g of charge control agent zinc stearate, and 2 g of fluidity improver fluororesin were mixed with the total amount of toner inner core, and external addition treatment was performed using a ball mill. The inner core of the toner with resin particles added thereto was obtained.
樹脂粒子外添トナー内核を粉体−液体混合ノズルに供給
しながら樹脂粒子を溶解する溶剤としてアセトンを供給
して被膜処理を行い、電子写真用トナーを作成した。こ
れを「トナー３」とする。While supplying the inner core of the toner with external addition of resin particles to a powder-liquid mixing nozzle, acetone was supplied as a solvent for dissolving the resin particles to perform a coating treatment, thereby producing a toner for electrophotography. This will be referred to as "toner 3."
［比較例２］
低融点性結着成分
ポリエチレンワックス
０ ｇ
エチレン−無水マレイン酸共重合体
７ ｇ
着色材
アセチレンブラック ３ｇ
上記をバッチ式混練機により混合混線を行い、ジェット
ミルにより１０〜１５μｍの微粒子に微粉砕してトナー
内核を得た。[Comparative Example 2] Low melting point binding component polyethylene wax 0 g Ethylene-maleic anhydride copolymer 7 g Colorant acetylene black 3 g The above was mixed and cross-mixed using a batch kneader, and fine particles of 10 to 15 μm were prepared using a jet mill. The powder was pulverized to obtain a toner inner core.
トナー内核全量を高融点性樹脂であるスチレン−ブチル
メタクリレート共重合体のトルエン溶液に分散し、ヘキ
サンを添加して界面沈澱反応を行い、続いて噴霧乾燥を
行ってトナー内核表面上にスチレン−ブチルメタクリレ
ート共重合体の被覆層を形成した。さらに荷電制御剤と
してステアリン酸亜鉛、流動性向上剤としてフッ素樹脂
を外添して電子写真用トナーを作成した。 これを「ト
ナー４」とする。The entire amount of the toner core is dispersed in a toluene solution of styrene-butyl methacrylate copolymer, which is a high melting point resin, and hexane is added to perform an interfacial precipitation reaction, followed by spray drying to form styrene-butyl on the surface of the toner core. A coating layer of methacrylate copolymer was formed. Further, zinc stearate was added as a charge control agent and fluororesin was added as a fluidity improver to prepare an electrophotographic toner. This will be referred to as "toner 4".
実施例１．２および比較例１．２の電子写真用トナーに
ついての定着下限温度は、「トナー１」、「トナー２」
は１１０℃、「トナー３」、「トナー４」は１１５℃で
あり、いずれも低温定着が可能であった。The lower limit fixing temperatures for the electrophotographic toners of Example 1.2 and Comparative Example 1.2 are "Toner 1" and "Toner 2".
was 110° C., and 115° C. for “Toner 3” and “Toner 4”, both of which were capable of low-temperature fixing.
また、実施例１．２の「トナー１」、「トナー３」につ
いて断面の透過電子顕微鏡観察を行い樹脂被覆層の平均
厚みを求めた結果、それぞれ０゜１７．０．２５μｍで
あり、外添に使用した樹脂粒径に依存した樹脂被覆層厚
みであった。また、流動性向上剤の微粉末が樹脂被覆層
中に分散されていることが確認された。これに対して比
較例１、２の「トナー２」、「トナー４」ではいずれも
０゜１μｍ以下であり、荷電制御剤や流動性向上剤は、
トナーの表面に付着していることが確認された。In addition, the cross sections of "Toner 1" and "Toner 3" in Example 1.2 were observed with a transmission electron microscope to determine the average thickness of the resin coating layer, which was 0°17 and 0.25 μm, respectively. The thickness of the resin coating layer depended on the resin particle size used. It was also confirmed that fine powder of the fluidity improver was dispersed in the resin coating layer. On the other hand, in "Toner 2" and "Toner 4" of Comparative Examples 1 and 2, the particle size was 0°1 μm or less, and the charge control agent and fluidity improver were
It was confirmed that the toner was attached to the surface of the toner.
さらに、「トナー１」から「トナー４」を現像装置に使
用して、印刷せずに８時間現像器を駆動、攪拌した前後
のトナー粒子径の変化と被画像形成体に印刷を行った場
合の非画像形成部の光学反射濃度の変化の測定結果を第
１表に示す。Furthermore, when "Toner 1" to "Toner 4" are used in the developing device and the developing device is driven and stirred for 8 hours without printing, the change in toner particle diameter before and after and when printing on an image forming object is shown. Table 1 shows the measurement results of the change in optical reflection density of the non-image forming area.
以下余白
第１表
第１表に示されるように本発明の実施例における電子写
真用トナー「トナー１」、 「トナー３」は、８時間現
像器を駆動・攪拌した後の粒子径は変化せず耐久性が高
い。これに対して比較例における「トナー２」、「トナ
ー４」では、微粒子成分が増加してトナーの平均粒子径
が小さくなり、トナー表面から荷電制御剤や流動性向上
剤の微小粒子が剥離しているものと考えられる。このた
め、非画像形成部の光学温度の変化についても「トナー
１」、「トナー３」では変化が少ないのに対し、「トナ
ー２」、「トナー４」では、光学温度の増加がみられ、
いわゆる地汚れが発生している。As shown in Table 1 in Table 1 below, the electrophotographic toners "Toner 1" and "Toner 3" in Examples of the present invention have no change in particle size after driving and stirring the developing device for 8 hours. Highly durable. On the other hand, in "Toner 2" and "Toner 4" in the comparative examples, the fine particle component increases and the average particle diameter of the toner decreases, and the fine particles of the charge control agent and fluidity improver peel off from the toner surface. It is thought that the Therefore, while there is little change in the optical temperature of the non-image forming area for "Toner 1" and "Toner 3", there is an increase in the optical temperature for "Toner 2" and "Toner 4".
So-called scumming occurs.
［発明の効果］
以上述べたように本発明によれば、誘電体上に形成され
た静電荷像を顕像化するための電子写真用トナーの製造
方法において、少なくとも低融点性のトナー内核表面に
高融点性の樹脂粒子、荷電制御剤、流動性向上剤を外添
する工程と、溶剤で処理して低融点性のトナー内核表面
に荷電制御剤と流動性向上剤を含有する高融点性の樹脂
被覆層を形成する工程とを有することにより、トナーの
表面からの荷電制御剤や流動性向上剤の剥離を防止して
耐久性ある低温定着用トナーを作成するための製造方法
を提供する事が可能になった。[Effects of the Invention] As described above, according to the present invention, in the method for producing an electrophotographic toner for visualizing an electrostatic charge image formed on a dielectric material, at least the surface of the inner core of the toner having a low melting point is A process of externally adding high melting point resin particles, a charge control agent, and a fluidity improver to the toner, and a process of adding a charge control agent and a fluidity improver to the inner core surface of the low melting point toner by treating it with a solvent. To provide a manufacturing method for producing a durable low-temperature fixing toner by preventing peeling of a charge control agent and a fluidity improver from the surface of the toner by forming a resin coating layer. things became possible.
第１図は本発明の電子写真用トナーの製造方法のフロー
チャート。
１・・・結着成分
２・・・着色材
３・・・＃ｆ脂粒子
４・・・荷電制御剤
５・・・流動性向上剤
６・・・溶剤
７・・・混練
８・・・微粉砕
９・・・トナー内核
１０・・・外添処理
１１・・・樹脂粒子外添トナー内核
１２・・・被膜処理
１３・・・電子写真用トナー
以上
出願人 セイコーエプソン株式会社FIG. 1 is a flowchart of the method for producing electrophotographic toner of the present invention. 1... Binder component 2... Coloring material 3... #f fat particles 4... Charge control agent 5... Fluidity improver 6... Solvent 7... Kneading 8... Fine grinding 9...Toner inner core 10...External addition treatment 11...Resin particle external addition toner inner core 12...Coating treatment 13...Toner for electrophotography and above Applicant: Seiko Epson Corporation
Claims (1)
写真用トナーの製造方法において、少なくとも低融点性
のトナー内核表面に高融点性の樹脂粒子、荷電制御剤、
流動性向上剤を外添する工程と、溶剤で処理して低融点
性のトナー内核表面に荷電制御剤と流動性向上剤を含有
する高融点性の樹脂被覆層を形成する工程とを有するこ
とを特徴とする電子写真用トナーの製造方法。In a method for producing an electrophotographic toner for visualizing an electrostatic charge image formed on a dielectric material, at least the surface of a low-melting toner inner core contains high-melting point resin particles, a charge control agent,
The method includes a step of externally adding a fluidity improver, and a step of treating with a solvent to form a high melting point resin coating layer containing a charge control agent and a fluidity improver on the surface of the low melting point toner inner core. A method for producing an electrophotographic toner characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2311791A JPH04182665A (en) | 1990-11-17 | 1990-11-17 | Production of toner for electrophotography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2311791A JPH04182665A (en) | 1990-11-17 | 1990-11-17 | Production of toner for electrophotography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04182665A true JPH04182665A (en) | 1992-06-30 |
Family
ID=18021499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2311791A Pending JPH04182665A (en) | 1990-11-17 | 1990-11-17 | Production of toner for electrophotography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04182665A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011013388A (en) * | 2009-06-30 | 2011-01-20 | Sharp Corp | Method for producing capsule toner |
| WO2013027397A1 (en) * | 2011-08-25 | 2013-02-28 | 森村ケミカル株式会社 | Charge control agent composition for external addition and electrostatic image developing toner |
| US8389193B2 (en) | 2009-03-26 | 2013-03-05 | Sharp Kabushiki Kaisha | Method of manufacturing toner, toner obtained by method thereof, one-component developer, two-component developer, developing device, and image forming apparatus |
| US8389194B2 (en) | 2009-03-26 | 2013-03-05 | Sharp Kabushiki Kaisha | Method of manufacturing toner, toner obtained by method thereof, one-component developer, two-component developer, developing device and image forming apparatus |
| US8399171B2 (en) | 2009-06-02 | 2013-03-19 | Sharp Kabushiki Kaisha | Method of manufacturing resin-layer coated carrier, resin-layer coated carrier, developer, developing device, and image forming apparatus |
| JP2017116568A (en) * | 2015-12-21 | 2017-06-29 | 京セラドキュメントソリューションズ株式会社 | Toner for electrostatic latent image development |
| EP3385060A4 (en) * | 2015-11-30 | 2018-12-26 | Konica Minolta, Inc. | Powder material, method for manufacturing three-dimensional modeled object, and three-dimensional-modeling device |
-
1990
- 1990-11-17 JP JP2311791A patent/JPH04182665A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8389193B2 (en) | 2009-03-26 | 2013-03-05 | Sharp Kabushiki Kaisha | Method of manufacturing toner, toner obtained by method thereof, one-component developer, two-component developer, developing device, and image forming apparatus |
| US8389194B2 (en) | 2009-03-26 | 2013-03-05 | Sharp Kabushiki Kaisha | Method of manufacturing toner, toner obtained by method thereof, one-component developer, two-component developer, developing device and image forming apparatus |
| US8399171B2 (en) | 2009-06-02 | 2013-03-19 | Sharp Kabushiki Kaisha | Method of manufacturing resin-layer coated carrier, resin-layer coated carrier, developer, developing device, and image forming apparatus |
| JP2011013388A (en) * | 2009-06-30 | 2011-01-20 | Sharp Corp | Method for producing capsule toner |
| WO2013027397A1 (en) * | 2011-08-25 | 2013-02-28 | 森村ケミカル株式会社 | Charge control agent composition for external addition and electrostatic image developing toner |
| US9280077B2 (en) | 2011-08-25 | 2016-03-08 | Morimura Chemicals Limited | Charge control agent composition for external addition and electrostatic image developing toner |
| EP3385060A4 (en) * | 2015-11-30 | 2018-12-26 | Konica Minolta, Inc. | Powder material, method for manufacturing three-dimensional modeled object, and three-dimensional-modeling device |
| US11433603B2 (en) | 2015-11-30 | 2022-09-06 | Konica Minolta, Inc. | Powder material, method for manufacturing three-dimensional modeled object, and three-dimensional-modeling device |
| JP2017116568A (en) * | 2015-12-21 | 2017-06-29 | 京セラドキュメントソリューションズ株式会社 | Toner for electrostatic latent image development |
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