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公开(公告)号：DE69329811D1
公开(公告)日：2001-02-08
申请号：DE69329811
申请日：1993-09-01
Applicant: KAO CORP
Inventor： SASAKI MITSUHIRO , ASANO TETSUYA , KAWABE KUNIYASU , KAWAJI HIROYUKI , FUJIKI KAZUHIRO
Abstract: The present invention is directed to an encapsulated toner for heat-and-pressure fixing having 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. An amorphous polyester is used as the main component of the shell, and the amount of the amorphous polyester is preferably 3 to 50 parts by weight, based on 100 parts by weight of the core material. The encapsulated toner of the present invention is excellent in offset resistance, fixable even at a low temperature and excellent in blocking resistance when it is used for heat-and-pressure fixing using a heated roller.
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公开(公告)号：DE10117856A1
公开(公告)日：2001-10-18
申请号：DE10117856
申请日：2001-04-10
Applicant: KAO CORP
Inventor： ASANO TETSUYA
Abstract: A hair cosmetic applicator includes a container for accommodating a hair cosmetic, and a comb section for discharging the hair cosmetic that is inside the container. The comb section is configured by aligning a plurality of plate-form comb teeth having liquid passageways for the hair cosmetic formed in the interiors thereof in the thickness direction of those plate-form comb teeth, discharge holes for the hair cosmetic are provided in at least one side of opposing surfaces of the adjacent plate-form comb teeth, and an inclined surface is formed in the base part of the plate-form comb teeth between adjacent plate-form comb teeth so as to face toward the hair cosmetic application surface when the hair cosmetic is being applied.
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公开(公告)号：DE69329811T2
公开(公告)日：2001-08-16
申请号：DE69329811
申请日：1993-09-01
Applicant: KAO CORP
Inventor： SASAKI MITSUHIRO , ASANO TETSUYA , KAWABE KUNIYASU , KAWAJI HIROYUKI , FUJIKI KAZUHIRO
Abstract: The present invention is directed to an encapsulated toner for heat-and-pressure fixing having 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. An amorphous polyester is used as the main component of the shell, and the amount of the amorphous polyester is preferably 3 to 50 parts by weight, based on 100 parts by weight of the core material. The encapsulated toner of the present invention is excellent in offset resistance, fixable even at a low temperature and excellent in blocking resistance when it is used for heat-and-pressure fixing using a heated roller.
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公开(公告)号：DE69400658T2
公开(公告)日：1997-03-06
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：DE19616577A1
公开(公告)日：1996-11-14
申请号：DE19616577
申请日：1996-04-25
Applicant: KAO CORP
Inventor： YAMAGUCHI TAKASHI , ASANO TETSUYA , FUKUSHIMA YOSHIHIRO , AKIYAMA KOJI , KAWABE KUNIYASU
Abstract: Encapsulated toner for fixing by heat and pressure has a heat-fusible core material contg. thermoplastic resin and colourant and a shell of hydrophilic resin covering the core. The core material contains a silicone oil (I) with a kinematic viscosity of 10-500 cSt at 25 deg C and the toner is obtd. by in-situ polymerisation. Also claimed is a method of producing the toner.
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Patent Agency Ranking
公开(公告)号：DE69426512T2
公开(公告)日：2001-06-13
申请号：DE69426512
申请日：1994-08-31
Applicant: KAO CORP
Inventor： ASANO TETSUYA , SASAKI MITSUHIRO , YAMAGUCHI TAKASHI , KAWABE KUNIYASU
IPC: G03G9/093
Abstract: The encapsulated toner for heat-and-pressure fixing which includes 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 is produced by a process having the step of carrying out in situ polymerization using a thermoplastic resin as a main component of the shell to form a shell having a structure in which a part of the heat-fusible core material is incorporated therein, the thermoplastic resin having a mechanical loss tangent (tan delta ) in the range of from 1.0 to 20.0 based on a dynamic viscoelasticity, when measured with a sine stress having an angular frequency of 25 rad/s at a temperature of from 80 to 120 DEG C. By using the encapsulated toner, good offset resistance can be obtained in the resulting toner even when its fixing speed is slow. Also, the core material is likely to be released from the encapsulated toner upon fixing while retaining good blocking resistance and good shocking resistance.
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公开(公告)号：DE69426512D1
公开(公告)日：2001-02-08
申请号：DE69426512
申请日：1994-08-31
Applicant: KAO CORP
Inventor： ASANO TETSUYA , SASAKI MITSUHIRO , YAMAGUCHI TAKASHI , KAWABE KUNIYASU
IPC: G03G9/093
Abstract: The encapsulated toner for heat-and-pressure fixing which includes 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 is produced by a process having the step of carrying out in situ polymerization using a thermoplastic resin as a main component of the shell to form a shell having a structure in which a part of the heat-fusible core material is incorporated therein, the thermoplastic resin having a mechanical loss tangent (tan delta ) in the range of from 1.0 to 20.0 based on a dynamic viscoelasticity, when measured with a sine stress having an angular frequency of 25 rad/s at a temperature of from 80 to 120 DEG C. By using the encapsulated toner, good offset resistance can be obtained in the resulting toner even when its fixing speed is slow. Also, the core material is likely to be released from the encapsulated toner upon fixing while retaining good blocking resistance and good shocking resistance.
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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：DE19546757A1
公开(公告)日：1996-06-20
申请号：DE19546757
申请日：1995-12-14
Applicant: KAO CORP
Inventor： ASANO TETSUYA , SEMURA TETSUHIRO , AOKI KATSUTOSHI
Abstract: Encapsulated toner for fixing with heat and pressure has(a) a core of thermoplastic resin(s) (I) and colourant, which melts on heating, covered by (b) a shell based on a hybrid resin (II) contg. a mol. chain (IIA) obtd. by condensation polymerisation and a mol. chain (IIB) obtd. by addn. polymerisation, in which chains (IIA) and (IIB) are chemically bonded. Also claimed is a method for producing the toner.
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公开(公告)号：JPH09179409A
公开(公告)日：1997-07-11
申请号：JP35017895
申请日：1995-12-21
Applicant: KAO CORP
Inventor： KAMEYAMA YUKITSUGU , ASANO TETSUYA , AKIYAMA KOJI
Abstract: PROBLEM TO BE SOLVED: To properly convey a developer even when the spherical toner having the sphericity of 1.1 or below is used and prevent a leak of the developer at a developer recovery port. SOLUTION: This developing device is provided with at least a developing sleeve holding a developer on the outer surface and conveying it by rotation, a magnetic roll fixed in it, and a developer feeding means feeding the developer to the developing sleeve. When the two-component developer composed of a magnetic carrier and toner is developed, the magnetic force distribution of the magnetic roll is set so that the magnetic force on the developing sleeve is made 50 gauss or above in the whole range of 90-180 deg. in the rotating direction, with the lowermost section of the developing sleeve set to 0 deg..
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