-
公开(公告)号：US10788767B2
公开(公告)日：2020-09-29
申请号：US16311787
申请日：2017-06-26
Applicant: ZEON CORPORATION
Inventor： Takeru Chiba , Sakyo Yagyu
Abstract: Provided is a toner for developing electrostatic images which is less likely to cause toner ejection and is excellent in printing durability. The toner comprises colored resin particles and external additives, wherein the external additives comprise an external additive A and an external additive B; wherein the external additive A is silica particles being surface-hydrophobized with a specific hydrophobizing agent and having a specific number average particle diameter; and wherein the external additive B is silicone resin particles having a ratio (BS/TS) of a BET specific surface area (BS) to a theoretical specific surface area (TS) in a range of from 3.0 to 30.0, and having a specific number average particle diameter.
-
公开(公告)号：US20190212667A1
公开(公告)日：2019-07-11
申请号：US16311787
申请日：2017-06-26
Applicant: ZEON CORPORATION
Inventor： Takeru Chiba , Sakyo Yagyu
Abstract: Provided is a toner for developing electrostatic images which is less likely to cause toner ejection and is excellent in printing durability. The toner comprises colored resin particles and external additives, wherein the external additives comprise an external additive A and an external additive B; wherein the external additive A is silica particles being surface-hydrophobized with a specific hydrophobizing agent and having a specific number average particle diameter; and wherein the external additive B is silicone resin particles having a ratio (BS/TS) of a BET specific surface area (BS) to a theoretical specific surface area (TS) in a range of from 3.0 to 30.0, and having a specific number average particle diameter.
-
Patent Agency Ranking
公开(公告)号：US20230383020A1
公开(公告)日：2023-11-30
申请号：US18031802
申请日：2021-10-29
Applicant: ZEON CORPORATION
Inventor： Sakyo Yagyu
Abstract: A method for producing hollow particles which comprise a shell and a hollow portion surrounded by the shell and which have a void ratio of 50% or more, the method comprising: preparing a mixture liquid containing a polymerizable monomer, a hydrophobic solvent, a polymerization initiator, a dispersion stabilizer and an aqueous medium, suspending the mixture liquid to prepare a suspension in which droplets or a monomer composition containing the polymerizable monomer, the hydrophobic solvent and the polymerization initiator are dispersed in the aqueous medium, and subjecting the suspension to a polymerization reaction to prepare a precursor composition containing precursor particles which have a hollow portion surrounded by a shell containing a resin and which include the hydrophobic solvent in the hollow portion, wherein the polymerizable monomer contains a crosslinkable monomer, and wherein an HOP distance between the crosslinkable monomer and the hydrophobic solvent is 5.80 to 6.50.
-
公开(公告)号：US11747745B2
公开(公告)日：2023-09-05
申请号：US17551292
申请日：2021-12-15
Applicant: ZEON CORPORATION
Inventor： Sakyo Yagyu
CPC classification number: G03G9/08737 , G03G9/09733
Abstract: The toner for developing electrostatic images, comprising: colored resin particles comprising a binder resin, a colorant and a release agent, and an external additive. The colored resin particles further comprise a styrene-based thermoplastic elastomer. The styrene-based thermoplastic elastomer comprises an isoprene unit. A content of a fatty acid ester compound having a number average molecular weight (Mn) of 500 or more and less than 2,000 as the release agent, is from 2 parts by mass to 20 parts by mass with respect to 100 parts by mass of the binder resin.
-
公开(公告)号：US20220107575A1
公开(公告)日：2022-04-07
申请号：US17551292
申请日：2021-12-15
Applicant: ZEON CORPORATION
Inventor： Sakyo Yagyu
Abstract: The toner for developing electrostatic images, comprising: colored resin particles comprising a binder resin, a colorant and a release agent, and an external additive. The colored resin particles further comprise a styrene-based thermoplastic elastomer. The styrene-based thermoplastic elastomer comprises an isoprene unit. A content of a fatty acid ester compound having a number average molecular weight (Mn) of 500 or more and less than 2,000 as the release agent, is from 2 parts by mass to 20 parts by mass with respect to 100 parts by mass of the binder resin.
-
16.发明申请公开(公告)号：US20200233329A1
公开(公告)日：2020-07-23
申请号：US16486895
申请日：2018-02-28
Applicant: ZEON CORPORATION
Inventor： Sakyo Yagyu , Takeru Chiba
Abstract: Provided is a positively-chargeable toner for developing electrostatic images excellent in printing durability, charge stability, and conveyance amount stability. The toner comprises colored resin particles comprising a binder resin and a colorant, and an external additive, wherein the external additive comprises spherical silica particles with a number average particle diameter of 70 to 200 nm. wherein the external additive has a particle size distribution in which a percentage of a number of particles having a particle diameter of 50 nm or more is 75% or more, which is calculated based on a SEM image.
-
公开(公告)号：US20200233326A1
公开(公告)日：2020-07-23
申请号：US16649359
申请日：2018-09-27
Applicant: ZEON CORPORATION
Inventor： Sakyo Yagyu
Abstract: Provided is a toner which provides excellent balance between high temperature storage stability and low temperature fixability and which is less likely to cause the bleeding out of a release agent even in a long-term, high-temperature condition. Disclosed is a toner for developing electrostatic images, comprising: colored resin particles comprising a binder resin, a colorant and a release agent, and an external additive, wherein the colored resin particles further comprise a styrene-based thermoplastic elastomer, and wherein a content of a fatty acid ester compound having a number average molecular weight (Mn) of 500 or more and less than 2,000 as the release agent, is from 2 parts by mass to 20 parts by mass with respect to 100 parts by mass of the binder resin.
-
-
-
-
-
-
Search Results
17
records
(took 0.029 seconds)
