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1. 发明专利

JP5658063B2 トナー用結着樹脂有权
公开(公告)号：JP5658063B2
公开(公告)日：2015-01-21
申请号：JP2011056713
申请日：2011-03-15
申请人：花王株式会社
发明人：宏樹垣内 , 宏樹垣内 , 白井　英治 , 英治白井 , 紀和神 , 紀和神
IPC分类号： G03G9/087

2. 发明专利

JP5427559B2 Positively charged pulverized toner 有权
公开(公告)号：JP5427559B2
公开(公告)日：2014-02-26
申请号：JP2009254039
申请日：2009-11-05
申请人：花王株式会社
发明人：田嶋　　久和 , 浩平片山 , 英治白井 , 栄田　　朗宏
IPC分类号： G03G9/087 , G03G9/097
CPC分类号： G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/09741 , G03G9/09775
摘要： A toner containing a resin binder containing two kinds of polyesters having softening points that differ by 10° C. or more, a colorant and a charge control agent, wherein the two kinds of polyesters contain a polyester A having a softening point of from 105° to 140° C. and a glass transition temperature of from 30° to 55° C., and a polyester B having a softening point of from 140° to 170° C. and a glass transition temperature of exceeding 55° C. and 80° C. or lower. The toner of the present invention is usable in, for example, development of latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

3. 发明专利

JP5419217B2 toner 有权
公开(公告)号：JP5419217B2
公开(公告)日：2014-02-19
申请号：JP2009248037
申请日：2009-10-28
申请人：花王株式会社
发明人：幸嗣亀山 , 栄田　　朗宏 , 英治白井
IPC分类号： G03G9/087 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide a toner having excellent low temperature fixability, reducing fogging or scumming, and having excellent solid-image following capability and halftone image density. SOLUTION: The toner comprises toner base particles containing a binder resin, and an external additive. The binder resin comprises a crystalline resin and an amorphous resin. The crystalline resin comprises a composite resin containing a styrene resin component and a condensation polymerization resin component which is obtained by polycondensing an alcohol component containing an aliphatic diol having 2 to 10 carbon atoms and a carboxylic acid component containing an aromatic dicarboxylic acid compound. The weight ratio of the condensation polymerization resin component to the styrene resin component (condensation polymerization resin component/styrene resin component) in the composite resin ranges from 50/50 to 95/5, the external additive comprises melamine resin fine particles and resin fine particles obtained by polymerizing a radical polymerizable monomer, and the total content of the melamine resin fine particles and the resin fine particles obtained by polymerizing the radical polymerizable monomer ranges from 0.03 to 1.0 parts by weight with respect to 100 parts by weight of the toner base particles. COPYRIGHT: (C)2011,JPO&INPIT

4. 发明专利

JP5419216B2 toner 有权
公开(公告)号：JP5419216B2
公开(公告)日：2014-02-19
申请号：JP2009248036
申请日：2009-10-28
申请人：花王株式会社
发明人：幸嗣亀山 , 栄田　　朗宏 , 英治白井
IPC分类号： G03G9/087 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide a toner having excellent low temperature fixability, reducing fogging or scumming, and having excellent solid-image following capability and halftone image density. SOLUTION: The toner comprises toner base particles containing a binder resin, and an external additive. The binder resin comprises a crystalline resin and an amorphous resin. The crystalline resin comprises a composite resin containing a styrene resin component and a condensation polymerization resin component which is obtained by polycondensing an alcohol component containing an aliphatic diol having 2 to 10 carbon atoms and a carboxylic acid component containing an aromatic dicarboxylic acid compound. The weight ratio of the condensation polymerization resin component to the styrene resin component (condensation polymerization resin component/styrene resin component) in the composite resin ranges from 50/50 to 95/5. The external additive comprises resin fine particles obtained by polymerizing a radical polymerizable monomer, the glass transition point of the resin fine particles is 80 to 150°C and the average particle diameter of the resin fine particle is 0.1 to 0.8 μm, and the content of the resin fine particles ranges from 0.03 to 1.0 part by weight with respect to 100 parts by weight of the toner base particles. COPYRIGHT: (C)2011,JPO&INPIT

5. 发明专利

JP5415324B2 Method of manufacturing a toner 有权
公开(公告)号：JP5415324B2
公开(公告)日：2014-02-12
申请号：JP2010040742
申请日：2010-02-25
申请人：花王株式会社
发明人：栄田　　朗宏 , 幸嗣亀山 , 英治白井
IPC分类号： G03G9/087
CPC分类号： G03G9/081 , G03G9/08708 , G03G9/08711 , G03G9/08797
摘要： A method for producing a toner including the steps of melt-kneading at least a resin binder and a colorant to give a kneaded product (step 1); and heat-treating the kneaded product obtained in the step 1 (step 2), wherein the resin binder contains a crystalline resin and an amorphous resin, wherein the crystalline resin contains a specified composite resin containing (a) a specified polycondensation resin component and (b) a styrenic resin component, in a specified weight ratio, wherein the composite resin is contained in the resin binder in a specified amount. The toner obtained by the above method is used in, for example, the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

6. 发明专利

JP5379443B2 Polyester for thermal transfer sheet 有权
标题翻译：空值
公开(公告)号：JP5379443B2
公开(公告)日：2013-12-25
申请号：JP2008267797
申请日：2008-10-16
申请人：花王株式会社
发明人：伸通神吉 , 英治白井 , 雄大松本
IPC分类号： C08G63/19 , B41M5/382 , B41M5/392 , C08G63/85

7. 发明专利

JP5273719B2 Toner for electrophotography 有权
公开(公告)号：JP5273719B2
公开(公告)日：2013-08-28
申请号：JP2008328549
申请日：2008-12-24
申请人：花王株式会社
发明人：英治白井 , 憲廣福利
IPC分类号： G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide toner for electrophotography having an excellent pressurization storage property while satisfying excellent low-temperature fixability, crystalline polyester composition used in the toner, binder resin containing the crystalline polyester composition, and a manufacturing method for the binder resin. SOLUTION: This crystalline polyester composition for toner is formed by mixing at least two kinds of crystalline polyester: crystalline polyester A whose storage modulus of elasticity is 120-100,000 Pa at 160 °C; and crystalline polyester B whose storage modulus of elasticity is 0.01-500 Pa at 160 °C. The storage modulus of elasticity of the crystalline polyester A is larger than that of the crystalline polyester B, and a difference in storage modulus of elasticity between the crystalline polyester A and the crystalline polyester B is 100 Pa or more. This binder resin contains the above crystalline polyester composition. The invention provides a manufacturing method for the same, and provides toner for electrophotography containing the above binder resin. COPYRIGHT: (C)2010,JPO&INPIT

8. 发明专利

JP5084483B2 Method of manufacturing a toner for electrophotography 有权
公开(公告)号：JP5084483B2
公开(公告)日：2012-11-28
申请号：JP2007322097
申请日：2007-12-13
申请人：花王株式会社
发明人：憲廣福利 , 英治白井
IPC分类号： G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing an electrophotographic toner achieving both of low temperature fixability and heat-resistant storage property, giving an image with good image characteristics and exhibiting superior productivity, and to provide the electrophotographic toner obtained by the method. SOLUTION: The method of manufacturing the electrophotographic toner includes a step [step (1)] of holding a toner composition containing a binder resin containing a crystalline polyester and an amorphous polyester, wherein the step (1) includes a step of keeping the toner composition at a temperature T (°C) expressed by formula (i): Tc-12≤T≤Tc+8 for one hour or longer. In the formula, Tc represents an exothermic maximum peak temperature (°C) in the differential scanning calorimetry of the toner composition. COPYRIGHT: (C)2009,JPO&INPIT

9. 发明专利

JP5057552B2 Electrophotographic toner binder resin for 有权
公开(公告)号：JP5057552B2
公开(公告)日：2012-10-24
申请号：JP2006180165
申请日：2006-06-29
申请人：花王株式会社
发明人：哲也上野 , 英治白井
IPC分类号： G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a binder resin for electrophotographic toner having proper grindability and offset resistance, and to provide a toner containing such a binder resin. SOLUTION: The binder resin for electrophotographic toner is obtained by polymerizing at least starting monomers of a condensation polymer resin and starting monomers of an addition polymer resin, wherein the starting monomers of the addition polymer resin contain styrene in amount of 90 wt.% or higher. The electrophotographic toner that contains the binder resin for electrophotographic toner is also provided. COPYRIGHT: (C)2008,JPO&INPIT

10. 发明专利

JP5037957B2 Polyester toner 有权
公开(公告)号：JP5037957B2
公开(公告)日：2012-10-03
申请号：JP2007021684
申请日：2007-01-31
申请人：花王株式会社
发明人：芳友木村 , 英治白井 , 泰規稲垣
IPC分类号： G03G9/087 , C08G63/195
摘要： PROBLEM TO BE SOLVED: To provide a polyester for toner superior in offset and filming resistances. SOLUTION: The polyester for the toner is obtained by condensation polymerization of an alcohol component containing 80 mol% or higher, in total, of a propylene oxide adduct of bisphenol A and an ethylene oxide adduct of bisphenol A and a carboxylic acid component, wherein the average number (a) of moles of the added propylene oxide adduct and the average number (b) of moles of the added ethylene oxide adduct satisfy b/a=1.15-2.10, and the polyester has a glass transition temperature of 50-65°C. COPYRIGHT: (C)2008,JPO&INPIT

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