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公开(公告)号：DE69219203T2
公开(公告)日：1997-08-07
申请号：DE69219203
申请日：1992-05-26
Applicant: KAO CORP
Inventor： YASUDA SHIN-ICHIRO , KAWABE KUNIYASU , SASAKI MITSUHIRO
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公开(公告)号：DE69400658D1
公开(公告)日：1996-11-14
申请号：DE69400658
申请日：1994-03-09
Applicant: KAO CORP
Inventor： YAMAGUCHI TAKASHI , SASAKI MITSUHIRO , ASANO TETSUYA , KAWABE KUNIYASU
IPC: G03G9/093
Abstract: A method for producing an encapsulated toner for heat-and-pressure fixing, which has a heat-fusible core material containing at least a thermoplastic resin and a coloring agent and a shell formed thereon so as to cover the surface of the core material, having the steps of coating the surface of the core material with a hydrophilic shell-forming material to form precursor particles; adding at least a vinyl polymerizable monomer and an initiator for vinyl polymerization to an aqueous suspension of the precursor particles to absorb them into the precursor particles; and then polymerizing the monomer components in the precursor particles. The method of the present invention offers toners which not only have improved storage stability but also are excellent in offset resistance, fixable at a low temperature and are further capable of forming clear images free from background.
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公开(公告)号：JPH09278627A
公开(公告)日：1997-10-28
申请号：JP8371896
申请日：1996-04-05
Applicant: KAO CORP
Inventor： SASAKI MITSUHIRO , TSUCHIYA RYUTA , SHIMA HIROSHI
IPC: A61K8/02 , A61K8/00 , A61K8/18 , A61K8/27 , A61K8/92 , A61Q1/00 , A61Q1/02 , A61Q1/12 , A61Q19/00 , A61K7/00 , A61K7/02 , A61K7/48
Abstract: PROBLEM TO BE SOLVED: To obtain a solid cosmetic comprising a specific powdery component containing a porous power material and an oily component in a specific ratio, having a property not exhibiting flowability even at a high temperature, capable of being well extended on the skin and capable of masking poil foramen, fine skin wrinkles, etc. SOLUTION: This solid cosmetic comprises (60-60wt.% of) a powdery component containing a porous powder material and containing (A) a fine powder material having a volume-average particle diameter of 0.1-2μm and a refractive index of
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公开(公告)号：JPH07209904A
公开(公告)日：1995-08-11
申请号：JP32367794
申请日：1994-11-30
Applicant: KAO CORP
Inventor： SASAKI MITSUHIRO , AKIYAMA KOJI
Abstract: PURPOSE:To obtain an electrostatic charge image developing toner for a heat and pressure fixation system using a heat roller or the like, fixable at low temperature, high in blocking resistance, and capable of forming fogless sharp images stably in many times. CONSTITUTION:This electrccphotographic toner comprises at least a fine magnetic particles and a binder resin, and these particles do not exist on the surfaces of the toner particles and satisfy bmin/A>0.2, where A is an average toner particle diameter and bmin is the distance between the fine magnetic particles situated nearest to the surfaces of the toner and these surfaces.
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公开(公告)号：JPH06222693A
公开(公告)日：1994-08-12
申请号：JP2738293
申请日：1993-01-21
Applicant: KAO CORP
Inventor： YASUDA SHINICHIRO , KAWABE KUNIYASU , SASAKI MITSUHIRO , YAMAZAKI HARUMASA
Abstract: PURPOSE:To drastically simplify transferring and fixing stages, to drastically improve the life and the reliability of a photo-sensitive body and to miniaturize the photosensitive body by giving heat resistance to the photosensitive body. CONSTITUTION:In the image forming method consisting of an electrostatic charging stage for electrostatically charging the photosensitive body 1, an exposing stage for exposing the photo-sensitive body 1, a developing stage for forming a toner image by sticking toner 10 to an electrostatic latent image formed on transfer film 17 moving in a state where its one part is brought into contact with the photosensitive body 1, the transferring stage for transferring the formed toner image to a recording medium such as recording paper 6, etc., and the fixing stage for fixing the transferred toner image to the recording medium; the toner 10 is a capsule toner whose outer shell is mainly composed of amorphous polyester, the photosensitive body 1 is a heat resistant photosensitive body, and the transferring stage and the fixing stage are simultaneously performed on the surface of the heat resistant photosensitive body through the transfer film 17 by using the preheated recording medium.
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Patent Agency Ranking
公开(公告)号：JPH06124000A
公开(公告)日：1994-05-06
申请号：JP27276292
申请日：1992-10-12
Applicant: KAO CORP
Inventor： NOJIRI NAOKI , YANAGIDA KOICHI , SHIMOKAWA YOSHIFUMI , INATOME HIROSHI , SASAKI MITSUHIRO
IPC: G03G9/087
Abstract: PURPOSE:To prevent aggregation of toner particles in a dispersion medium during polymn., to stabilize the dispersion, and to obtain toner particles having a sharp distribution of particle size. CONSTITUTION:An electrostatic charge image developing toner is obtd. by dispersing a polymerizable monomer compsn. containing a charge controlling agent and a coloring agent in a water-base medium by using a dispersion stabilizer and then effecting suspension polymn. As for the dispersion stabilizer, an inorg. compd. powder which is hardly soluble in water is used. As for a dispersion assistant, a surfactant is used. A part of the inorg. compd. powder which is hardly soluble in water and a part or whole of the surfactant are added when the dispersion is initiated, and the rest of the inorg. compd. powder and surfactant, or the rest of the inorg. compd. powder is added during the dispersion or after the dispersion.
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公开(公告)号：JPH05307277A
公开(公告)日：1993-11-19
申请号：JP35454392
申请日：1992-12-16
Applicant: KAO CORP
Inventor： SAKUMA TADASHI , YAMAZAKI HARUMASA , SASAKI MITSUHIRO , KAWABE KUNIYASU
Abstract: PURPOSE:To provide the electrophotographic development method which decreases the surface friction resistance of an org. photosensitive body and improves the sliding characteristic thereof and improves the running characteristic thereof without cleaning defects and the inversion of a cleaning blade by incorporating a fluorine compd. and/or fluorine-contained resin into the surface of the org. photosensitive body, unlike the development method using the conventional org. photosensitive body, as the electrophotographic development method using a synthetic toner. CONSTITUTION:This electrophotographic development method consists in visualizing the electrostatic latent image formed on the surface of the photosensitive body by the static electric force of the synthetic toner electrostatically charged within the electric field between the photosensitive body and the developing electrode disposed to face this photosensitive body. The org. photosensitive body contg. the fluorine compd. and/or fluorine-contained resin in the surface layer is used in the above-mentioned electrophotographic development method.
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公开(公告)号：JPH05204266A
公开(公告)日：1993-08-13
申请号：JP29790292
申请日：1992-10-09
Applicant: KAO CORP
Inventor： YASUDA SHINICHIRO , KAWABE KUNIYASU , SASAKI MITSUHIRO
Abstract: PURPOSE:To accomplish fixing at low temperature and with low line pressure and to simplify a fixing device by attaching toner to an electrostatic latent image obtained on an endless film belt, preheating a toner image and transferring and fixing it on a recording medium. CONSTITUTION:The toner image is formed by attaching a toner 9 in a developing device 3 to the electrostatic latent image obtained on an insulating endless film belt 7 consisting of fluororesin heat resistant film. The belt 7 rotates and moves to carry the toner image to a transfer and fixing part. Meanwhile, a recording medium 6a or 6b such as a recording paper is carried to fixing rollers 5a and 5b so as to synchronize with the leading edge of the toner image. When the toner on the belt 7 is heated by a preheating means disposed on the inner surface side of the belt 7 while it is carried and pressured in the transfer and fixing part, a core material is discharged and transfer and fixing are performed. The toner used in this method and device is thermal dissociation capsule toner, and the transfer and fixing are performed at 40-120 deg.C.
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公开(公告)号：JPH05197188A
公开(公告)日：1993-08-06
申请号：JP2726092
申请日：1992-01-17
Applicant: KAO CORP
Inventor： SASAKI MITSUHIRO , KAWABE KUNIYASU
Abstract: PURPOSE:To stably form a sharp image capable of controlling electrostatic charge property from the inside of a toner and having excellent offset resistance, a low fixing temperature, excellent blocking resistance, and no photographic fog and to easily clean the untransferred toner on a photosensitive body in the blade cleaning. CONSTITUTION:In a thermo-pressure fixing capsule toner constituted of a heat- melting core containing at least coloring agent and an outer shell provided to cover the surface of the core, the main constituent of the core is made of the thermoplastic resin obtained by polimerizing 0.05-20 pts.wt. of a alpha,beta-ethylenic copolymerizable monomer (A) containing acid anhydride group and 99.90-80 pts.wt. of another alpha,beta-ethylenic copolymerizable monomer (B), and projections are partially provided on the surface of the toner containing inorganic fine grains in the core.
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公开(公告)号：JPH05197186A
公开(公告)日：1993-08-06
申请号：JP2725892
申请日：1992-01-17
Applicant: KAO CORP
Inventor： SASAKI MITSUHIRO , KAWABE KUNIYASU
Abstract: PURPOSE:To provide excellent blocking resistance and good friction electrification property, allow low-energy fixing, and easy cleaning of the untransferred toner on a photosensitive body in the blade cleaning even at a high copying speed and printing speed by using the resin having thermal dissociation binding for the main constituent of an outer shell. CONSTITUTION:In a thermo-pressure fixing capsule toner constituted of a heat- melting core containing at least a coloring agent and an outer shell provided to cover the surface of the core, projections are partially provided on the surface of the toner containing inorganic fine grains in the core.
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