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11. 发明专利

CA2628003A1 TONER FOR DEVELOPING ELECTROSTATIC IMAGES, TONER KITS, AND IMAGE FORMATION EQUIPMENT 未知
公开(公告)号：CA2628003A1
公开(公告)日：2007-05-10
申请号：CA2628003
申请日：2006-11-01
申请人： RICOH KK
发明人： HONDA TAKAHIRO , UCHINOKURA OSAMU , TOMITA MASAMI , FUSHIMI HIROYUKI , SUGIURA HIDEKI , UMEHARA KEN , SHU HYO
IPC分类号： G03G9/087 , G03G9/09
摘要： A toner is provided that comprises a colorant and a binder resin, wherein the binder resin comprises a polyester resin that is prepared by a polycondensation reaction in the presence of at least a titanium-containing catalyst expressed by General Formula (I) or (II), the toner has a volume average particle diameter of 2.0 µm to 10.0 µm and a ratio Dv/Dn within a range of 1.00 to 1.40, in which Dv represents a volume average particle diameter and Dn represents a number average particle diameter, €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒTi(-X) m (-OH) n €ƒ€ƒ€ƒ€ƒ€ƒGeneral Formula (I) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒO=Ti(-X) p (-OR) q €ƒ€ƒ€ƒ€ƒ€ƒGeneral Formula (II) in General Formulas (I) and (II), X represents a residue of a mono-alkanolamine of 2 to 12 carbon atoms or a polyalkanolamine from which a hydrogen atom of one hydroxyl group is removed; other hydroxyl group(s) and still other hydroxyl group(s), within the polyalkanolamine molecule that has a directly bonding Ti atom, may polycondense to form a ring structure; other hydroxyl group(s) and still other hydroxyl group(s) may polycondense intermolecularly to form a repeating structure; and the polymerization degree is 2 to 5 in a case of forming the repeating structure; R represents one of a hydrogen atom and alkyl groups of 1 to 8 carbon atoms that may have 1 to 3 ether bonds; "m" is an integer of 1 to 4; "n" is an integer of 0 to 3; the sum of "m" and "n" is 4; "p" is an integer of 1 or 2; "q" is an integer of 0 or 1; the sum of "p" and "q" is 2; and in a case that "m" and "p" is 2 or more, the respective Xs may be identical or different each other.

12. 发明专利

DE69928876T2 未知
公开(公告)号：DE69928876T2
公开(公告)日：2006-08-24
申请号：DE69928876
申请日：1999-08-27
申请人： RICOH KK
发明人： MIYAMOTO SATORU , MOCHIZUKI SATOSHI , SUZUKI TOMOMI , TOMITA MASAMI
IPC分类号： G03G9/08 , G03G9/097 , G03G13/01 , G03G15/08 , G03G15/16
摘要： A toner is proposed which includes toner particles and a fluidity-imparting agent and have such characteristics that the toner particles has an average circularity of 0.93 to 0.97, and that a residue of the toner is in an amount of 10 mg or less when 100 g of the toner is sieved with a 500-mesh sieve, which toner is for use in an electrophotographic image formation method using an intermediate image transfer method. A full-color image formation method, using this toner, and an image formation apparatus in which this toner is used are also proposed.

13. 发明专利

ES2250802T3 TONER PARA ELECTROFOTOGRAFIA, REVELADOR, CARTUCHO DE TRATAMIENTO, APARATO DE FORMACION DE IMAGENES Y PROCEDIMIENTO DE FORMACION DE IMAGENES QUE LO UTILIZAN. 未知
公开(公告)号：ES2250802T3
公开(公告)日：2006-04-16
申请号：ES03019191
申请日：2003-08-25
申请人： RICOH KK
发明人： TOMITA MASAMI , NANYA TOSHIKI , SASAKI FUMIHIRO , EMOTO SHIGERU , YAGI SHINICHIRO , HIGUCHI HIROTO
IPC分类号： G03G5/08 , G03G9/08 , G03G9/087 , G03G15/08 , G03G15/20
摘要： Un tóner para electrofotografía que comprende: una resina; y cera dispersada dentro de la resina en forma de partículas finas para formar una partícula de tóner, en el que las partículas de cera dispersadas están situadas en el conjunto de la partícula de tóner y la cantidad de cera presente en la parte superficial de la partícula de tóner es mayor que la cantidad de cera presente en la parte central de la partícula de tóner.

14. 发明专利

FR2586696B1 未知
公开(公告)号：FR2586696B1
公开(公告)日：1988-04-15
申请号：FR8612186
申请日：1986-08-28
申请人： RICOH KK
发明人： TOMITA MASAMI , INOUE SATARU , MATSUI AKIO , NANYA TOSHIKI , SASAKI FUMIHIRO
IPC分类号： G03G9/08 , G03G9/09 , G03G9/097 , C09B67/22
摘要： A red toner for developing latent electrostatic images is disclosed which comprises a binder agent, C.I. Pigment Red 48 and C.I. Pigment Red 81.

15. 发明专利

GB2184858A COLOUR TONER FOR USE IN ELECTROPHOTOGRAPHY 未知
公开(公告)号：GB2184858A
公开(公告)日：1987-07-01
申请号：GB8630002
申请日：1986-12-16
申请人： RICOH KK
发明人： TOMITA MASAMI , NOMURA YOSHIHIRO , IDE NORIAKI , OHTAKI KAZUMI
IPC分类号： G03G9/09 , G03G9/08
摘要： This invention relates to a color toner for electrophotography containing a coloring agent and a binder resin as the main components, said coloring agent comprising at least one of the anthraquinone derivatives expressed by the following general formula (I), (I) wherein R1 represents hydrogen or an alkyl group having at least 6 carbon atoms and R2 represents hydrogen, an alkyl group having at least 6 carbon atoms or phenyl group. This invention further relates to a color toner for electrophotography containing a coloring agent and a binder resin as the main components, in addition to said anthraquinone derivatives of the general formula (I), said coloring agent further comprising at least one of the compounds expressed by the following chemical formulas (II) and (III): (II) (III)

16. 发明专利

DE3643604A1 未知
公开(公告)号：DE3643604A1
公开(公告)日：1987-06-25
申请号：DE3643604
申请日：1986-12-19
申请人： RICOH KK
发明人： TOMITA MASAMI , NOMURA YOSHIHIRO , IDE NORIAKI , OHTAKI KAZUMI
IPC分类号： G03G9/09 , G03G9/08 , G03G9/14 , C09B1/20
摘要： This invention relates to a color toner for electrophotography containing a coloring agent and a binder resin as the main components, said coloring agent comprising at least one of the anthraquinone derivatives expressed by the following general formula (I), (I) wherein R1 represents hydrogen or an alkyl group having at least 6 carbon atoms and R2 represents hydrogen, an alkyl group having at least 6 carbon atoms or phenyl group. This invention further relates to a color toner for electrophotography containing a coloring agent and a binder resin as the main components, in addition to said anthraquinone derivatives of the general formula (I), said coloring agent further comprising at least one of the compounds expressed by the following chemical formulas (II) and (III): (II) (III)

17. 发明专利

GB2151034B TONER FOR DEVELOPMENT LATENT ELECTROSTATIC IMAGES 未知
公开(公告)号：GB2151034B
公开(公告)日：1987-01-14
申请号：GB8430534
申请日：1984-12-04
申请人： RICOH KK
发明人： MURAYAMA HISAO , KAWABATA TOSHIYASU , NANYA TOSHIKI , TOMITA MASAMI
IPC分类号： G03G9/08 , G03G9/083 , G03G9/09 , G03G9/097

18. 发明专利

DE60328844D1 未知
公开(公告)号：DE60328844D1
公开(公告)日：2009-10-01
申请号：DE60328844
申请日：2003-03-21
申请人： RICOH KK
发明人： NANYA TOSHIKI , TOMITA MASAMI , EMOTO SHIGERU , YAMADA HIROSHI , YAGI SHINICHIRO , WATANABE NAOHIRO , TAKIGAWA TADAO
IPC分类号： G03G9/097 , G03G9/08 , G03G9/087
摘要： A toner for developing an electrostatic image, including a colorant, a binder resin comprising a modified polyester, and fine resin particles having a weight average particle diameter of 50 to 300 nm and being present on an outer surface of the toner, wherein the toner has a BET specific surface area of 1.5 to 4.0 m /g.

19. 发明专利

CA2539631C TONER, AND, DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 未知
公开(公告)号：CA2539631C
公开(公告)日：2009-07-21
申请号：CA2539631
申请日：2004-09-16
申请人： RICOH KK
发明人： SAKATA KOICHI , UCHINOKURA OSAMU , ASAHINA YASUO , NAKAYAMA SHINYA , UTSUMI TOMOKO , YAMADA HIROSHI , IWAMOTO YASUAKI , SHIMOTA NAOHITO , ICHIKAWA TOMOYUKI , MOCHIZUKI SATOSHI , NAKAJIMA HISASHI , YAGI SHINICHIRO , SUGIURA HIDEKI , HONDA TAKAHIRO , SUZUKI TOMOMI , TOMITA MASAMI , NANYA TOSHIKI , KOTSUGAI AKIHIRO , SASAKI FUMIHIRO , HIGUCHI HIROTO , ISHII MASAYUKI , AWAMURA JUNICHI , EMOTO SHIGERU
IPC分类号： G03G9/087 , G03G20060101 , G03G5/08 , G03G9/08
摘要： An object of the invention is to provide: a toner such that the toner corresponds to a low-temperature fixing system, is excellent in both of offs et resistance and anti-heat preservability and especially, even after a large number of copies are to be produced over a long period, the toner does not aggregat e to each other, deterioration of flowability, transferability, and fixing abilit y is extremely rare, the toner makes it possible to form stable images on any transferring medium without transfer errors and with good reproducibility, a nd further does not contaminate fixing unit and images; or the like. Therefore, provided is a toner which includes a toner material, wherein the toner satisfies the following formula: 0.degree.C .ltoreq. .DELTA.Tm .ltoreq. 20.degree.C where .DELTA.Tm represents Tma - Tmb, Tma (.degree.C) is 1/2 flown-out temperature of the toner by a capillary type flow tester, and Tmb (.degree.C ) is 1/2 flown-out temperature of a melt kneaded mixture of the toner by the capillar y type flow tester, and wherein Tma is from 130.degree.C to 200.degree.C.

20. 发明专利

DE60225763T2 未知
公开(公告)号：DE60225763T2
公开(公告)日：2009-04-09
申请号：DE60225763
申请日：2002-07-03
申请人： RICOH KK
发明人： YAMASITA HIROSHI , SUGIYAMA TSUNEMI , EMOTO SHIGERU , TOMITA MASAMI
IPC分类号： G03G9/087 , G03G9/08
摘要： A dry toner for developing an electrostatic image, including a toner binder containing a urea-modified polyester. The toner has an average sphericity of 0.96 or more and contains no more than 30 % by weight of particles having a sphericity of less than 0.95.

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