专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP4790934B2 Toner for developing an electrostatic latent image 有权
公开(公告)号：JP4790934B2
公开(公告)日：2011-10-12
申请号：JP2001202049
申请日：2001-07-03
申请人：株式会社リコー
发明人：光輝加藤 , 昌秀山下 , 和人渡辺 , 陽一郎渡辺 , 桂子白石 , 麻衣子近藤 , 政則鈴木
IPC分类号： G03G9/08 , G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide electrostatic image developing toner capable of accomplishing both of low-temperature fixation and offset resistance, also, capable of obtaining good image quality after printing many sheets, and capable of coping with the reduction of a particle size. SOLUTION: As for the electrostatic image developing toner, the toner contains at least two or more kinds of resin and wax, and the resin and the wax are mutually made in non-compatible state, and the resin and the wax have a mutual separation structure like sea and islands, another resin is dispersed like islands in the sea-like continuous resin, and the wax is substantially included in some of the island-like resin and the wax is not substantially included in some of the island-like resin.

2. 发明专利

JP4731538B2 Image forming method and image forming apparatus 有权
公开(公告)号：JP4731538B2
公开(公告)日：2011-07-27
申请号：JP2007280817
申请日：2007-10-29
申请人：株式会社リコー
发明人：光輝加藤 , 昌秀山下 , 和人渡辺 , 陽一郎渡辺 , 桂子白石 , 政則鈴木
IPC分类号： G03G9/087 , G03G9/08 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide an image forming method in which the gloss of an image can be changed by the kind of an image and a user's liking, the stable low-gloss image can be obtained while sufficient fixability is given, and the middle-gloss and high-gloss image can be obtained without performing significant fixing condition change, and an image forming apparatus. SOLUTION: The image forming method comprising holding a recording material between an endless belt and a roller and fixing a toner image formed on the recording material by heat and pressure is characterized by forming the toner image on the recording material by using the toner of 15,000 to 45,000 in weight average molecular weight by GPC, 5 to 15 in weight average molecular weight/number average molecular weight, in which the component of ≥1×10 5 in molecular weight exists at 3 to 15 wt.%, and changing over the gloss of the fixed image by a means of changing over the gloss of the fixed image. COPYRIGHT: (C)2008,JPO&INPIT

3. 发明专利

JP4334792B2 For two-component developer toner, a two-component developer, toner container, an image forming apparatus and image forming method 有权
标题翻译：空值
公开(公告)号：JP4334792B2
公开(公告)日：2009-09-30
申请号：JP2001290317
申请日：2001-09-25
申请人：株式会社リコー
发明人：光輝加藤 , 昭宏小番 , 昌秀山下 , 陽一郎渡辺 , 豊志澤田 , 桂子白石 , 政則鈴木
IPC分类号： G03G9/08 , G03G9/083 , G03G9/087 , G03G9/09 , G03G9/113 , G03G15/08 , G03G15/09 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To provide black toner for two-component developer which does not cause toner deposition of the background of an image and toner scattering or the like, especially, in the case of consecutively outputting many sheets of images having large image area, is excellent in fluidity, and hardly causes the occurrence of filming or the like, and further with which stable image quality is obtained over a long term even in the case of using small particle size toner, and to provide a two-component developer, a toner container, an image forming apparatus and an image forming method. SOLUTION: The black toner for two-component developer is used in the image forming apparatus (developing device) where the two-component developer consisting of toner and carrier is stirred by a stirring means, so that toner particles are triboelectrified, and the two-component developer including the electrified toner particles is held on a turnable nearly cylindrical developer carrier having a magnetic field generating means inside, whereby an electrostatic latent image formed on the image carrier is developed. The toner is constituted by incorporating a colorant made of at least metallic material in binding resin, and the saturation magnetization of the toner is 0.01 to 0 emu/g, and true specific gravity thereof is 1.35 to 1.60 g/cm3.
摘要翻译：要解决的问题：为了提供双组分显影剂的黑色调色剂，其不会导致图像的背景和调色剂散射等的调色剂沉积，特别是在连续输出具有大图像面积的许多图像的情况下，流动性优异，并且几乎不引起成膜等的发生，并且即使在使用小粒径调色剂的情况下，也能长期获得稳定的图像质量，并且提供双组分显影剂，调色剂容器，图像形成装置和图像形成方法。解决方案：用于双组分显影剂的黑色调色剂用于由调色剂和载体组成的双组分显影剂通过搅拌装置搅拌的图像形成装置（显影装置）中，使调色剂颗粒摩擦带电，包含带电调色剂颗粒的组分显影剂保持在具有磁场产生装置的可转动的几乎圆柱形的显影剂载体上，由此形成在图像载体上的静电潜像显影。调色剂是通过将至少金属材料制成的着色剂结合在粘合树脂中而调色剂的饱和磁化强度为0.01〜0emu / g，真比重为1.35〜1.60g / cm 3。

4. 发明专利

JP4255659B2 Developing an electrostatic latent image for magenta toner, developer, color image forming method, and a color image forming apparatus 有权
公开(公告)号：JP4255659B2
公开(公告)日：2009-04-15
申请号：JP2002235992
申请日：2002-08-13
申请人：株式会社リコー
发明人：孝幸小池 , 裕士山下 , 康敬岩本 , 拓也斉藤 , 賢望月 , 恒心杉山 , 陽一郎渡辺 , 政則鈴木 , 毅高田
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing magenta toner excellent in stability of a charged state over a prolonged period of time, free of surface fogging and toner scattering, giving high image density as a magenta toner for full colors, excellent in saturation, transparency, light resistance and fading resistance, and excellent also in cleanability, transferability and graininess, and to provide a developer comprising the toner, an image forming method using the toner and an image forming apparatus loaded with the toner. SOLUTION: The electrostatic charge image developing magenta toner is toner containing at least a colorant obtained by dissolving a toner composition containing a modified polyester resin capable of urea bonding in an organic solvent, causing a polyaddition reaction in an aqueous medium, removing the solvent of the resulting dispersion solution and carrying out washing, wherein the colorant is a compound represented by a general formula (I). COPYRIGHT: (C)2004,JPO

5. 发明专利

JP4191912B2 Two-component developer and a two-component developer filled with containers and an image forming apparatus 有权
公开(公告)号：JP4191912B2
公开(公告)日：2008-12-03
申请号：JP2001153884
申请日：2001-05-23
申请人：株式会社リコー
发明人：洋志中井 , 文浩佐々木 , 康敬岩本 , 恒心杉山 , 明美杉山 , 浩明松田 , 博人樋口 , 政則鈴木 , 久美長谷川
IPC分类号： G03G9/10 , G03G9/08 , G03G9/083
摘要： PROBLEM TO BE SOLVED: To provide a two-component developer using low-temperature fixing toner, with which toner spent onto a carrier surface is less, sufficient, unexcessive, and uniform frictional electrification is provided, and a toner image having excellent resolution, gradation, and thin-line reducibility is formed even in an image forming device using digital image signals. SOLUTION: The two-component developer includes toner and carrier. The toner contains at least a resin and a coloring agent, and an additive is added to the toner. The number-average molecular weight of the toner (Mn) is =40%. The carrier satisfies the following general formula: 3,000,000

6. 发明专利

JP4176352B2 Color toner for developing an electrostatic image 有权
公开(公告)号：JP4176352B2
公开(公告)日：2008-11-05
申请号：JP2002017664
申请日：2002-01-25
申请人：株式会社リコー
发明人：拓也斉藤 , 陽一郎渡辺 , 豊志澤田 , 桂子白石 , 政則鈴木 , 将志長山
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide color toner for electrostatic charge development which ensures appropriate image gloss and is excellent in color reproducibility, offset prevention, transferability, durability, electrification stability relative to humidity, crushability, film prevention, etc. SOLUTION: The structure of the color toner is constituted such that an island-like binding resin is dispersed in a sea-like binding resin and a releasing agent is substantially enclosed in the island-like binding resin. The sea-like binding resin does not contain a THF insoluble constituent. Also, in the sea-like binding resin, weight-average molecular weight by GPC is 10,000 to 90,000. In addition, one or more kinds of inorganic fine particles with at least a specific surface area of 60 to 400 m 2 /g are added to the sea-like binding resin. Further, the island-like binding resin is produced by performing, two or more times, a mechanochemical method, a method for exerting impact in high speed air flow, or a method for reforming in hot air. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP3973133B2 Image forming method 有权
公开(公告)号：JP3973133B2
公开(公告)日：2007-09-12
申请号：JP2000355707
申请日：2000-11-22
申请人：株式会社リコー
发明人：光輝加藤 , 昌秀山下 , 和人渡辺 , 陽一郎渡辺 , 桂子白石 , 政則鈴木
IPC分类号： G03G9/087 , G03G9/097 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a method for forming images, which starts operation quickly by using an image forming toner, having proper low-temperature fixing property and thermal storage property. SOLUTION: The method for forming images includes a fixing operation for heating and fixing a toner image, by making support body carrying the toner image to pass through between two rollers. The fixing roller used for the fixing operation and in contact with the toner image support face is a hallow roller having

8. 发明专利

JP3946596B2 Toner and an image forming method for developing an electrostatic latent image 有权
公开(公告)号：JP3946596B2
公开(公告)日：2007-07-18
申请号：JP2002236625
申请日：2002-08-14
申请人：株式会社リコー
发明人：信一倉本 , 裕士山下 , 拓也斉藤 , 恒心杉山 , 陽一郎渡辺 , 政則鈴木 , 毅高田
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide a color toner having high color fastness to light while keeping transparency, hue and saturation which a dye have, in consideration of the fact that a color toner excellent in transparency, hue and saturation and having high color fastness to light cannot be obtained by the prior arts and to provide an image forming method using the obtained toner. SOLUTION: The electrostatic charge image developing toner is obtained by dissolving a resin having a group which reacts with active hydrogen and a toner composition containing a colorant soluble in an organic solvent and having one or more active hydrogens in an organic solvent, dispersing the resulting solution in an aqueous medium containing fine particles and/or colloid and/or a surfactant, reacting the resin and the colorant in the resulting dispersion solution and removing the solvent in the dispersion solution. COPYRIGHT: (C)2004,JPO

9. 发明专利

JP3942143B2 Electrophotographic developer and an image forming method 有权
标题翻译：空值
公开(公告)号：JP3942143B2
公开(公告)日：2007-07-11
申请号：JP2001008007
申请日：2001-01-16
申请人：株式会社リコー
发明人：光輝加藤 , 昌秀山下 , 和人渡辺 , 陽一郎渡辺 , 桂子白石 , 麻衣子近藤 , 政則鈴木
IPC分类号： G03G9/08 , G03G9/113 , G03G15/08 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To obtain an image forming method with which a high-quality image is held extremely over a long term, waste toner is reduced to be as little as possible and a large contribution to natural preservation is realized, by restraining the variation over time of the characteristic of developer, to such an extent that it can be neglected substantially. SOLUTION: The developer for electrophotography, where a coating layer including a resin layer is provided on the surface of core material consisting of at least magnetic substance, and surface roughness Rz (nm) in a region of 500 nm×500 nm on the surface of a carrier particle, isolation rate K (number %) of an external additive particulate in toner and the primary average diameter D (nm) of the additive particulate have relation shown by the following expression (1), is used in this image forming method: (1)1.5×sin[(π/2)×(K/100)]
摘要翻译：要解决的问题：为了获得长期保持高质量图像的图像形成方法，将废调色剂减少到尽可能少，并且通过抑制变化来实现对自然保存的大的贡献随着时间的推移，开发商的特点，可以大大地忽略它。解决方案：在至少包含磁性物质的芯材表面上设置包含树脂层的涂层的电子照相显影剂，表面粗糙度为500nm×500nm的表面粗糙度Rz（nm）在该图像形成方法中使用载体颗粒，调色剂中外部添加剂颗粒的分离速率K（数量％）和添加剂颗粒的初级平均直径D（nm）具有以下表达式（1）所示的关系：（1）1.5×sin [（π/ 2）×（K / 100）]

10. 发明专利

JP3919142B2 Two-component developer 有权
公开(公告)号：JP3919142B2
公开(公告)日：2007-05-23
申请号：JP6732199
申请日：1999-03-12
申请人：株式会社リコー
发明人：明美杉山 , 浩明松田 , 博人樋口 , 政則鈴木
IPC分类号： G03G9/113 , G03G9/08 , G03G9/087
摘要： PROBLEM TO BE SOLVED: To obtain a carrier for an electrostatic latent image developer surface- coated with a coating layer excellent in wear resistance without impairing the high effect of a silicone resin to prevent the spending of a toner and giving high developing ability and stable image quality. SOLUTION: In a carrier for an electrostatic latent image developer surface- coated with an additive-containing silicone resin, carbon black surface-treated with dimethylsilicone oil having 300-30,000 cs is used as the additive and the amount of the additive is 2-15 wt.%. A core material having >=70 emu/g saturation magnetization is used.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式