公开(公告)号：JP2010243612A

公开(公告)日：2010-10-28

申请号：JP2009089623

申请日：2009-04-01

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： ONDA YUTAKA ,  TOIZUMI KIYOSHI ,  MATSUMOTO KATSURU ,  SHIBAI YASUHIRO

IPC: G03G9/08 ,  G03G9/087 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide toner which is hardly flocculated and allows fixing at a low temperature, and also to provide a two-component developer containing the toner, and a developing device using the two-component developer. SOLUTION: The toner contains a first toner particle group and a second toner particle group. A volume average particle size of the first toner particle group is smaller than that of the second toner particle group. Only toner particles constituting the second toner particle group, out of toner particles constituting the first toner particle group and toner particles constituting the second toner particles group, contain a crystalline polyester resin. The two-component developer containing this toner is charged in the developing device to perform development. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供几乎不絮凝并允许在低温下定影的调色剂，以及提供含有调色剂的双组分显影剂和使用该双组分显影剂的显影装置。 调色剂含有第一调色剂颗粒组和第二调色剂颗粒组。 第一调色剂颗粒组的体积平均粒度小于第二调色剂颗粒组的体积平均粒度。 仅构成第二调色剂颗粒组的调色剂颗粒，构成第一调色剂颗粒组的调色剂颗粒和构成第二调色剂颗粒组的调色剂颗粒含有结晶聚酯树脂。 将含有该调色剂的双组分显影剂装入显影装置中进行显影。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010241878A

公开(公告)日：2010-10-28

申请号：JP2009089622

申请日：2009-04-01

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MATSUMOTO KATSURU ,  ONDA YUTAKA ,  TOIZUMI KIYOSHI ,  SHIBAI YASUHIRO

IPC: C08J3/05 ,  G03G9/087

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a crystalline polyester resin fine particle dispersion at high production efficiency, while stably maintaining the dispersion state of the crystalline polyester resin fine particle in an aqueous medium and accelerating uniform crystallization of the crystalline polyester resin fine particle to prevent decrease in a crystallization degree. SOLUTION: The method includes a step of preparing a fine particle dispersion liquid for obtaining a fine particle dispersion liquid having crystalline polyester resin fine particle dispersed in an aqueous medium; wherein the preparation step includes a shearing step and a cooling and pressure-reducing step. In the shearing step, the aqueous medium is added to coarsely pulverized particles of the crystalline polyester resin agitated and conveyed under heating and pressurizing conditions, so as to carry out phase inversion emulsification while adding shearing force. In the cooling and pressure-reducing step, the dispersion liquid conveyed while agitated is cooled and pressure-reduced so as to gradually decrease the temperature and pressure. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 待解决的问题：为了提供一种以高生产率生产结晶聚酯树脂细颗粒分散体的方法，同时稳定地将结晶聚酯树脂细颗粒的分散状态保持在水性介质中并促进结晶的均匀结晶 聚酯树脂细颗粒以防止结晶度降低。 解决方案：该方法包括制备细颗粒分散液以获得分散在水性介质中的结晶聚酯树脂细颗粒的细颗粒分散液的步骤; 其中所述制备步骤包括剪切步骤和冷却和减压步骤。 在剪切步骤中，将水性介质加入到在加热和加压条件下搅拌和输送的结晶聚酯树脂的粗粉碎颗粒中，以在加入剪切力的同时进行相转化乳化。 在冷却和减压步骤中，搅拌下输送的分散液被冷却和减压，以便逐渐降低温度和压力。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010204581A

公开(公告)日：2010-09-16

申请号：JP2009052589

申请日：2009-03-05

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： TOIZUMI KIYOSHI ,  ONDA YUTAKA ,  MATSUMOTO KATSURU ,  SHIBAI YASUHIRO

IPC: G03G9/08 ,  G03G9/10 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a toner, a two-component developer, a developing device and an image forming apparatus, for increasing image density and improving dot reproducibility. SOLUTION: The toner contains a first toner particle group and a second toner particle group, in which the volume average particle diameter of the first toner group is smaller than the volume average particle diameter of the second toner group, and the glass transition temperature of a binder resin included in the toner particles constituting the first toner particle groups is higher than the glass transition temperature of a binder resin included in the toner particles constituting the second toner particle group. Image density can be increased and dot reproducibility can be improved without degrading low temperature fixability by increasing the glass transition temperature of a binder resin included in the toner particles of the first toner particle group, which is easily aggregated because the volume average particle diameter is smaller as well as by decreasing the glass transition temperature of a binder resin included in the toner particles of the second particle group, which is inferior in transferring heat during fixing because the volume average particle diameter is larger. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供调色剂，双组分显影剂，显影装置和图像形成装置，用于增加图像浓度和提高点再现性。

解决方案：调色剂含有第一调色剂颗粒组和第二调色剂颗粒组，其中第一调色剂组的体积平均粒径小于第二调色剂组的体积平均粒径，玻璃化转变 包含在构成第一调色剂颗粒组的调色剂颗粒中的粘合剂树脂的温度高于构成第二调色剂颗粒组的调色剂颗粒中包含的粘合剂树脂的玻璃化转变温度。 通过增加包含在第一调色剂颗粒组的调色剂颗粒中的粘合剂树脂的玻璃化转变温度，由于体积平均粒径较小，容易聚集，可以提高图像密度并且可以提高点再现性，而不降低低温定影性 并且通过降低由于体积平均粒径较大而在固定期间传递热量的第二颗粒组的调色剂颗粒中包含的粘合剂树脂的玻璃化转变温度。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010122469A

公开(公告)日：2010-06-03

申请号：JP2008296089

申请日：2008-11-19

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： ARIYOSHI SATOSHI ,  MATSUMOTO KATSURU

IPC: G03G9/087 ,  G03G9/08

CPC classification number: G03G9/081 ,  G03G9/087 ,  G03G9/08775 ,  G03G9/08777 ,  G03G9/08795 ,  G03G9/08797 ,  G03G2215/0604

Abstract: PROBLEM TO BE SOLVED: To provide a toner containing a lignin resin, which is a carbon neutral biomass polymer having a low environmental load and taking global environmental protection into account, as a constitutional component of a binder resin, and having a wide fixing non-offset range and an excellent fixing property. SOLUTION: The toner contains at least a binder resin, a colorant, and a release agent. Furthermore, in the toner, the binder resin comprises a resin A that is a lignin resin and a resin B that is another resin component; and the resin B has a peak top molecular weight of 10 3 to 10 4 and an acid number of not more than 20. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供含有木质素树脂的调色剂，其是具有低环境负荷并考虑到全球环境的碳中性生物质聚合物，作为粘合剂树脂的构成成分，并且具有宽 固定非偏移范围和良好的定影性能。 调色剂至少含有粘合剂树脂，着色剂和脱模剂。 此外，在调色剂中，粘合剂树脂包括作为木质素树脂的树脂A和作为其他树脂成分的树脂B; 树脂B的峰顶分子量为10×SP 3〜10 SP SP 4，酸值为20以下。（C）2010， JPO＆INPIT

公开(公告)号：JP2007219452A

公开(公告)日：2007-08-30

申请号：JP2006043073

申请日：2006-02-20

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： SHIBAI YASUHIRO ,  ARIYOSHI SATOSHI ,  MATSUMOTO KATSURU

IPC: G03G9/087 ,  G03G9/08

CPC classification number: G03G9/0804 ,  G03G9/08782

Abstract: PROBLEM TO BE SOLVED: To manufacture a toner excellent in image reproducibility, which forms a high-quality image of high definition and high resolution, and is free from filming on a photoreceptor due to bleed-out of wax, an offset phenomenon in a high temperature range and the like. SOLUTION: Resin particles containing at least a binder resin and wax particles having a particle diameter of 30-600 nm are aggregated and the resultant aggregates are heated. The wax particles having a particle diameter of 30-600 nm are manufactured, e.g., by a granulation method including a coarse powder preparing step S1, a slurry preparing step S2, a pulverization step S3, a cooling step S4, and a pressure reduction step S5, wherein a slurry of wax coarse powder obtained at the step S1 and the step S2 is passed through a pressure-resistant nozzle under application of heat and pressure at the step S3, whereby the wax coarse powder is pulverized to obtain wax particles, and the step S4 and the step S5 are carried out immediately after the step S3 to prevent coarsening of the wax particles. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了制造图像再现性优异的调色剂，其形成高清晰度和高分辨率的高质量图像，并且由于蜡渗出而在感光体上没有成膜，偏移现象 在高温范围等。 解决方案：将至少含有粘合剂树脂的树脂颗粒和粒径为30-600nm的蜡颗粒聚集，并将所得聚集体加热。 制造粒径为30-600nm的蜡颗粒，例如通过包括粗粉末制备步骤S1，浆料制备步骤S2，粉碎步骤S3，冷却步骤S4和减压步骤的造粒方法 S5，其中在步骤S3中在步骤S1和步骤S2获得的蜡粗粉末的浆料在加热和加压下通过耐压喷嘴，由此将蜡粗粉末粉碎以获得蜡颗粒，并且 在步骤S3之后立即执行步骤S4和步骤S5，以防止蜡颗粒的粗大化。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007187917A

公开(公告)日：2007-07-26

申请号：JP2006006544

申请日：2006-01-13

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MATSUMOTO KATSURU ,  SHIBAI YASUHIRO

IPC: G03G9/087

CPC classification number: G03G9/0817 ,  G03G9/0804 ,  G03G9/081 ,  G03G9/0815

Abstract: PROBLEM TO BE SOLVED: To manufacture toner superior in image reproduction and forming high quality image of high fineness and high resolution and in which filming to a photoreceptor caused by bleed-out of wax, an offset phenomenon in a high temperature region and the like do not occur.
SOLUTION: In a method for manufacturing the toner including a coarse powder preparation process S1, a slurry preparation process S2, a crushing process S3, a cooling process S4, and a depressurization process S5, small diameter toner particles are obtained by passing slurry of toner coarse powder obtained in the processes S1, S2 through a pressure resistant nozzle under heating and pressurization in the process S3 to crush toner coarse powder, and dispersion of a wax component into the toner particles is promoted by providing the process S4 just after the process S3. Furthermore, occurrence of bubbling and coarseness of the toner particles accompanying it are prevented by providing a process S5, thus the wax is uniformly dispersed, and the small diameter toner particles are obtained without generating bleed-out.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了制造图像再现性优异并形成高精细度和高分辨率的高质量图像，并且由于渗出蜡而导致的感光体成膜，高温区域的偏移现象和 不会发生。 解决方案：在用于制造包括粗粉末制备工艺S1，浆料制备工艺S2，破碎工艺S3，冷却工艺S4和减压工艺S5的调色剂的方法中，通过通过获得小直径调色剂颗粒 在工艺S3中通过加压加压在工艺S1，S2中获得的调色剂粗粉末的浆料粉碎调色剂粗粉末，并通过在后面提供工艺S4来促进蜡组分分散在调色剂颗粒中 过程S3。 此外，通过提供工艺S5来防止伴随其的调色剂颗粒的起泡和粗糙度的发生，从而蜡均匀分散，并且获得小直径调色剂颗粒而不产生渗出。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007156008A

公开(公告)日：2007-06-21

申请号：JP2005349496

申请日：2005-12-02

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： ARIYOSHI SATOSHI ,  KAWASE NORITAKA ,  KIKAWA KEIICHI ,  MATSUMOTO KATSURU

IPC: G03G9/087

CPC classification number: G03G9/0808 ,  G03G9/0804 ,  G03G9/0815

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a toner capable of stably manufacturing the toner having desired characteristics in a melt emulsification method of obtaining the toner by dispersing a resin kneaded material in an aqueous medium and granulating the mixture. SOLUTION: The mixture obtained by mixing the resin kneaded material obtained by kneading at least a binder resin and a colorant, a dispersant and an aqueous medium containing water, then agitating the resultant mixture by using an agitation apparatus 1 equipped with a screen 4 formed with a mixture ejection hole 9 on the inner side of a container 2 and a rotor 5 in an agitation space 3a formed by the screen 4. As a result, shearing force and collision force can be generated at the time the mixture is ejected from the mixture ejection hole 9 and therefore, the heating temperature of the aqueous medium by a heater 13 can be lowered without degrading the granulatability of the resin kneaded material. Thereby, the dispersion state and composition of the colorant etc., included in the resin kneaded material during the granulation can be prevented from changing and the toner having the desired characteristics can be stably manufactured. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决问题的方法：提供一种制造调色剂的方法，所述调色剂能够通过将树脂捏合材料分散在水性介质中并使混合物成粒来获得调色剂的熔融乳化方法中具有所需特性的调色剂。 解决方案：将通过捏合至少粘合剂树脂和着色剂获得的树脂捏合材料，分散剂和含水的水性介质混合获得的混合物，然后使用装有筛网的搅拌装置1搅拌所得混合物 4由容器2的内侧上的混合物喷射孔9和由筛网4形成的搅拌空间3a中的转子5形成。结果，在喷射混合物时可产生剪切力和碰撞力 从而能够降低由加热器13引起的水性介质的加热温度，而不降低树脂捏和材料的成粒性。 由此，可以防止在造粒期间包含在树脂捏和材料中的着色剂等的分散状态和组成变化，并且可以稳定地制造具有所需特性的调色剂。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007052274A

公开(公告)日：2007-03-01

申请号：JP2005237663

申请日：2005-08-18

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KAWASE NORITAKA ,  ARIYOSHI SATOSHI ,  MATSUMOTO KATSURU ,  YAMAMOTO YOSHINORI

IPC: G03G9/087 ,  G03G9/08

CPC classification number: G03G9/08755 ,  G03G9/0804 ,  G03G9/0808 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797

Abstract: PROBLEM TO BE SOLVED: To provide a toner which is excellent in hot-offsetting resistance, free from variance in charging performance, and suitable as a toner for an electrostatic charge image development, and a manufacturing method thereof. SOLUTION: In a step s1, a crosslinked resin including at least tetrahydrofuran-insoluble component and a coloring agent are dry-kneaded. In a step s3, the kneaded resin obtained is mixed with a dispersing agent aqueous solution prepared in a step s2 and heated. Resin particles containing the coloring agent are formed in the liquid mixture of the kneaded resin and the dispersing agent aqueous solution. The liquid mixture is cooled in the step s4, and the resin particles containing the coloring agent are separated from the liquid mixture in the step s6. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种耐热抵抗性优异的调色剂，其充电性能不受影响，适合作为静电荷图像显影用调色剂及其制造方法。 解决方案：在步骤s1中，将至少包含四氢呋喃不溶性成分和着色剂的交联树脂进行干式混炼。 在步骤s3中，将得到的捏合树脂与步骤s2中制备的分散剂水溶液混合并加热。 在捏合树脂和分散剂水溶液的液体混合物中形成含有着色剂的树脂颗粒。 在步骤s4中冷却液体混合物，并且在步骤s6中将含有着色剂的树脂颗粒与液体混合物分离。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2005221768A

公开(公告)日：2005-08-18

申请号：JP2004029526

申请日：2004-02-05

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MATSUMOTO KATSURU ,  NISHIKAWA TEIICHI ,  AIMOTO TOYOYOSHI

IPC: G03G9/08 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a developing apparatus for visualizing an electrostatic latent image on an image carrier with a developer, in which the consumed amount of the developer is decreased by reducing reversal fog, the life of the developer is prolonged, the running cost is reduced, the charge accumulation of the developer is maintained in an appropriate range, fixing or melt sticking of the developer on a developer carrier is prevented, and a sharp favorable image can be formed without scattering or blurring of dots, and to provide a process cartridge including the developing apparatus. SOLUTION: The developing apparatus 5 includes a developer carrier 12, a developer supply body 12, a layer thickness regulating member 13 having ≤150 GPa longitudinal elastic modulus, a developer container 14, and a developer charging assist member 15. The layer thickness regulating member 13 is specified to have ≤100 nΩ×m specific resistance and ≥1.50×10 2 W/(m×K) thermal conductivity (at 20°C). COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：为了提供一种用显影剂使图像载体上的静电潜像可视化的显影装置，其中显影剂的消耗量通过减少反转雾度而降低，显影剂的寿命延长， 运行成本降低，显影剂的电荷积累保持在适当的范围内，防止了显影剂在显影剂载体上的固定或熔融粘附，并且可以形成清晰的良好图像而不会发生点或模糊，并且 提供包括显影装置的处理盒。 解决方案：显影装置5包括显影剂载体12，显影剂供应体12，具有≤150GPa纵向弹性模量的层厚调节构件13，显影剂容器14和显影剂充电辅助构件15.层 厚度调节构件13被规定为具有≤100nΩ×m电阻率和≥1.50×10 2 W /（m×K）导热率（在20℃）。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005173489A

公开(公告)日：2005-06-30

申请号：JP2003416800

申请日：2003-12-15

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： SHIBAI YASUHIRO ,  MATSUMOTO KATSURU ,  ARIYOSHI SATOSHI

IPC: G03G9/09

Abstract: PROBLEM TO BE SOLVED: To provide a color toner for electrostatic latent image development which satisfies both of contradicting characteristics of transparency and electrostatic charge stability at a high level and further excels in color reproducibility, colorability, etc. SOLUTION: The color toner which is packed into a developing unit 19 of an image forming apparatus 100 and is used for development of the electrostatic latent image formed on the surface of a photoreceptor 16 is prepared by sticking a pyrolyzable polar group to a pigment surface to uniformly disperse the pigment into a binder resin, decomposing the pyrolyzable polar group by heating at the time of dispersion, and regulating the content thereof to ≤1.0 KOHmg per 1 g of the toner. Since the toner is excellent in both of the transparency and the electrostatic charge stability, the toner is capable of forming an image of high sharpness and high grade having the excellent color reproducibility, colorability, etc., for a long period of time. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种静电潜像显影用彩色调色剂，其高透明度和静电电荷稳定性的矛盾特性都很好，再现色彩再现性，着色性等。解决方案： 通过将可热分解的极性基团粘附到颜料表面上来制备装填到图像形成装置100的显影单元19中并用于形成在感光体16的表面上的静电潜像的显影的彩色调色剂，以均匀分散 将颜料转化为粘合剂树脂，在分散时通过加热分解可热解极性基团，并将其含量调节至每1g调色剂≤1.0KOHmg。 由于调色剂在透明性和静电电荷稳定性方面均优异，所以调色剂能够长时间形成具有优异的着色再现性，着色性等的高锐度和高等级的图像。 版权所有（C）2005，JPO＆NCIPI