公开(公告)号：JP2009162957A

公开(公告)日：2009-07-23

申请号：JP2007341458

申请日：2007-12-28

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KUBO MASAHIKO ,  ARIYOSHI SATOSHI

IPC: G03G9/087 ,  G03G9/08 ,  G03G9/09

CPC classification number: G03G9/08797 ,  G03G9/0819 ,  G03G9/08755 ,  G03G9/08775 ,  G03G9/08795 ,  G03G9/09708 ,  G03G9/09725

Abstract: PROBLEM TO BE SOLVED: To provide a toner which exhibits excellent fixing property, chargeability, color reproducibility and long-term stability, even in a toner containing crystalline polyester, and to provide a two-component developer, a developing device and an image forming apparatus. SOLUTION: The toner includes toner base particles that contain a colorant and a binder resin containing at least crystalline polyester and an amorphous resin, and a mixed oxide of aluminum oxide and silicon dioxide externally added to the toner base particles, wherein the content of the crystalline polyester in the binder resin falls within a range from 20 wt.% to 50 wt.% and a compositional proportion of aluminum oxide in the mixed oxide of aluminum oxide and silicon dioxide falls within a range from 35 wt.% to 50 wt.%. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：即使在含有结晶性聚酯的调色剂中，即使在含有结晶性聚酯的调色剂中也能提供显示优异的定影性，带电性，色彩再现性和长期稳定性的调色剂，并且提供双组分显影剂，显影装置和 图像形成装置。 调色剂包括调色剂基础颗粒，其含有着色剂和至少含有结晶聚酯和无定形树脂的粘合剂树脂，以及外部添加到调色剂基础颗粒中的氧化铝和二氧化硅的混合氧化物，其中含量 的粘结剂树脂中的结晶性聚酯的含量在20重量％〜50重量％的范围内，氧化铝和二氧化硅的混合氧化物中的氧化铝的组成比例在35重量％〜50重量％的范围内 重量％。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2005316308A

公开(公告)日：2005-11-10

申请号：JP2004136405

申请日：2004-04-30

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： TOIZUMI KIYOSHI ,  AKAZAWA YOSHIAKI ,  OGAWA SATORU ,  KUBO MASAHIKO ,  NAKATSU HIROMI ,  MATSUMOTO HIROO ,  SUZUKI MASARO

IPC: G03G9/09 ,  G03G15/01 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of stably forming high-quality color images over a prolonged period of time.
SOLUTION: In the image forming apparatus 1 capable of forming color images, a plurality of development devices 29 for developing an electrostatic latent images, by supplying toner which is a developer to a photoreceptor 27 are disposed for each color toner (cyan, magenta, yellow). The apparatus is set so that the glass transition temperatures of the color toners in the developers used in the respective development devices 29 are set higher, the shorter the distance between a fixing device 45 and each developing device 29 becomes.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供能够在长时间内稳定地形成高质量彩色图像的图像形成装置。 解决方案：在能够形成彩色图像的图像形成装置1中，通过向感光体27供应作为显影剂的调色剂，将用于显影静电潜像的多个显影装置29设置用于每个彩色调色剂（青色， 品红色，黄色）。 设置该装置使得各显影装置29中使用的显影剂中的彩色调色剂的玻璃化转变温度被设定得更高，定影装置45和每个显影装置29之间的距离越短。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005250149A

公开(公告)日：2005-09-15

申请号：JP2004060973

申请日：2004-03-04

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KUBO MASAHIKO ,  AKAZAWA YOSHIAKI ,  OGAWA SATORU ,  NAKATSU HIROMI ,  MATSUMOTO HIROO ,  SUZUKI MASARO

IPC: G03G9/08 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a one component development method to form a high-quality image free from fogging or deterioration in the picture quality for a long period of time. SOLUTION: The one component development method is implemented by supplying the following toner onto a developing roller by a supply roller, carrying the supplied toner on the developing roller, making the carried toner form a toner thin layer of uniform thickness by a layer thickness regulating member disposed in contact with the developing roller, and bringing the developing roller carrying the toner thin layer of uniform thickness into contact with a photoreceptor carrying an electrostatic latent image to develop the electrostatic latent image. The toner is prepared by externally adding each predetermined amount of silica having a predetermined average particle diameter and of aluminum oxide-silicon dioxide mixture oxide having a predetermined average particle diameter to toner mother particles containing at least a colorant and a binder resin. The circumferential velocity ratio of the developing roller to the circumferential velocity of the photoreceptor is controlled to 1.10 to 1.25, thereby maintaining excellent stable supplying property of the toner for a long time. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种单组分显影方法以形成长时间不产生灰雾或劣化图像质量的高质量图像。 解决方案：单组分显影方法通过将供墨辊供给到显影辊上而将下列调色剂供给到显影辊上，从而将所携带的调色剂形成均匀厚度的调色剂薄层，由层 厚度调节构件与显影辊接触地设置，并使承载均匀厚度的调色剂薄层的显影辊与携带静电潜像的感光体接触，以形成静电潜像。 调色剂是通过向每个预定量的预定量的具有预定平均粒径的二氧化硅和具有预定平均粒径的氧化铝 - 二氧化硅混合氧化物外部添加至少含有着色剂和粘合剂树脂的调色剂母粒来制备的。 显影辊与感光体圆周速度的圆周速度比被控制在1.10到1.25，从而保持了调色剂长期稳定的供给特性。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005215501A

公开(公告)日：2005-08-11

申请号：JP2004024159

申请日：2004-01-30

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： AKAZAWA YOSHIAKI ,  KUBO MASAHIKO ,  OGAWA SATORU ,  NAKATSU HIROMI ,  MATSUMOTO HIROO ,  SUZUKI MASARO

IPC: G03G9/08 ,  G03G9/087

Abstract: PROBLEM TO BE SOLVED: To provide toner which is excellent in electrostatic charge stability when it is used as a nonmagnetic one component developer, welding resistance to a developing blade and filming resistance to a developing roller and a photo conductor and forms a high concentration, uniform, and clear image with a small amount of toner. SOLUTION: In the case of producing the toner used as the developer of an image forming device 100, volume mean particle diameter is set to ≥6μm≤9μm, content of toner particles having ≥15.0μm particle diameter is set to ≤ 2.0 volume %, content of toner particles having ≤ 5.00μm particle diameter is set to ≥ 30 number % and content of toner particles having ≤ 3.00μm particle diameter is set to ≤ 10 number %. In the toner having such particle diameter distribution, electrostatic charging property is maintained through life even when it is used as the nonmagnetic one component developer, welding to the developing blade and filming to the developing roller and the recording medium such as the photoconductor are not generated and the high concentration, uniform and clear image is formed with a small amount of toner. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：为了提供当用作非磁性单组分显影剂时静电电荷稳定性优异的调色剂，对显影刮刀的耐焊接性和对显影辊和光导体的耐光性并形成高 浓缩，均匀，清晰的图像与少量的墨粉。 解决方案：在制造用作图像形成装置100的显影剂的调色剂的情况下，体积平均粒径设定为≥6μm≤9μm，粒径≥15.0μm的调色剂颗粒的含量设定为≤2.0 体积％，具有≤5.00μm粒径的调色剂颗粒的含量设定为≥30数量％，并且具有≤3.00μm粒径的调色剂颗粒的含量设定为≤10数量％。 在具有这种粒径分布的调色剂中，即使将其用作非磁性单组分显影剂，仍然保持静电充电性能，不会产生对显影辊的焊接和对显影辊的成膜以及诸如感光体的记录介质 并且用少量调色剂形成高浓度，均匀和清晰的图像。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005148441A

公开(公告)日：2005-06-09

申请号：JP2003386274

申请日：2003-11-17

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： OGAWA SATORU ,  AKAZAWA YOSHIAKI ,  KUBO MASAHIKO ,  NAKATSU HIROMI ,  MATSUMOTO HIROO ,  SUZUKI MASARO

IPC: G03G9/08 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a nonmagnetic monocomponent developer which is excellent in supply/charge stability, ensures little change of the surface state in long-term running in a nonmagnetic monocomponent developing system, does not cause image degradation or faulty charge due to sticking or fusion on a layer regulating member, and gives a high quality image. SOLUTION: In the nonmagnetic monocomponent toner comprising at least a binder resin and a coloring pigment, hydrophobic silica (A pts. wt.) having an average primary particle diameter of 7-15 nm, hydrophobic silica (B pts. wt.) having an average primary particle diameter of 30-50 nm and titanium oxide or strontium titanate (C pts. wt.) having an average primary particle diameter of 150-500 nm are used as external additives in amounts satisfying 0.5≤A≤3.0, 0.5≤(B+C)/A≤1 and 1≤B/C≤10. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题为了提供一种非磁性单组分显影剂，其供电/电荷稳定性优异，确保在非磁性单组分显影系统中长时间运行时表面状态的变化很小，不会导致图像劣化或故障电荷 由于在层调节构件上的粘附或融合，并且给出高质量的图像。 解决方案：在至少包含粘合剂树脂和着色颜料的非磁性单组分调色剂中，平均初级粒径为7-15nm的疏水性二氧化硅（A重量份），疏水性二氧化硅（B重量％ ），平均一次粒径为150〜500nm的二氧化钛或钛酸锶（C重量）作为外加剂，以0.5≤A≤3.0的量使用， A≤1≤1≤B/C≤0.5≤（B + C）/A≤1。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005148106A

公开(公告)日：2005-06-09

申请号：JP2003380920

申请日：2003-11-11

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MATSUMOTO HIROO ,  AKAZAWA YOSHIAKI ,  KUBO MASAHIKO ,  OGAWA SATORU ,  NAKATSU HIROMI ,  SUZUKI MASARO

IPC: G03G9/087

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing toner for electrophotographic recording by which a source material mixture is kneaded as wound around a heating roll while releasing property of a release agent does not affect or the melting state of a binder resin on the heating roll does not have low viscosity, and the mixture hardly falls to below the roll.
SOLUTION: The manufacturing method carried out by melting and kneading a source material mixture containing a binder resin, a colorant and a release agent and then pulverizing and classifying the kneaded material is characterized in that: the melting temperature Tm [°C] of the binder resin is in the range of 100≤Tm≤140; an open roll type continuous kneading machine is used; the gap DI [mm] in the source mixture supply side satisfies DI≤1.00; and the cross-sectional area A [mm
2 ] of the gap between the heating roll and cooling roll, the area enclosed by the straight line connecting each center of the heating roll and the cooling roll and by a straight line connecting two points shifted upward from each center of the heating roll and the cooling roll in the vertical direction by a half of each radius, the temperature Ts [°C] in the source material side of the heating roll, and the supply amount S [kg/h] of the source material mixture are controlled to satisfy (1): 15≤A×(Ts-25)/(Tm×S)≤32.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种用于制造电子照相记录用调色剂的方法，通过该方法将源材料混合物缠绕在加热辊上缠绕，同时剥离剂的脱模性不影响粘合剂树脂的熔融状态 在加热辊上不具有低粘度，并且混合物几乎不下降到辊的下方。 解决方案：通过熔融和捏合含有粘合剂树脂，着色剂和脱模剂的原料混合物，然后粉碎和分级捏合材料进行的制造方法的特征在于：熔融温度Tm [℃] 的粘合剂树脂在100≤Tm≤140的范围内; 使用开式连续捏合机; 源混合物供给侧的间隙DI [mm]满足DI≤1.00; 以及加热辊和冷却辊之间的间隙的横截面积A [mm 2 ]，连接加热辊的每个中心和冷却辊的直线所包围的面积和 连接从加热辊的每个中心和冷却辊在垂直方向上向上偏移半个半径的两点的直线，加热辊的源材料侧的温度Ts [℃]和供给量 控制源材料混合物的S [kg / h]以满足（1）：15≤A×（Ts-25）/（Tm×S）≤32。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004287231A

公开(公告)日：2004-10-14

申请号：JP2003080973

申请日：2003-03-24

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KUBO MASAHIKO

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/09

CPC classification number: G03G9/08797 ,  G03G9/08704 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/08795

Abstract: PROBLEM TO BE SOLVED: To provide a color toner having good fixability, glossiness, transparency and releasability without coating a fixing device with a fixing oil. SOLUTION: The toner consists essentially of a colorant, a release agent and a binder resin, wherein the release agent is a mixture of carnauba wax and a nonpolar paraffin wax. This electrophotographic negative charge type full color toner includes a polyester resin having an acid number of 7-20 mgKOH/g as the binder resin. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供具有良好定影性，光泽度，透明性和脱模性的彩色调色剂，而不用固定油涂覆定影装置。 调色剂基本上由着色剂，脱模剂和粘合剂树脂组成，其中脱模剂是巴西棕榈蜡和非极性石蜡的混合物。 该电子照相负电荷型全色调色剂包括酸值为7-20mgKOH / g的聚酯树脂作为粘合剂树脂。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004287218A

公开(公告)日：2004-10-14

申请号：JP2003080855

申请日：2003-03-24

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KUBO MASAHIKO

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097

CPC classification number: G03G9/08782 ,  G03G9/08704 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797

Abstract: PROBLEM TO BE SOLVED: To provide a color toner having good fixability, glossiness, transparency and releasability without coating a fixing device with a fixing oil. SOLUTION: The toner consists essentially of a colorant, a release agent and a binder resin, wherein the release agent is a mixture of carnauba wax and a nonpolar paraffin wax. In this electrophotographic negative charge type full color toner, the binder resin comprises a polyester resin including cyclohexanedimethanol as an essential one of polyhydric alcohol components and having an acid number of 5-20 mgKOH/g. COPYRIGHT: (C)2005,JPO&NCIPI

公开(公告)号：JP2003029446A

公开(公告)日：2003-01-29

申请号：JP2001211097

申请日：2001-07-11

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KUBO MASAHIKO ,  SAWAI MASAYUKI ,  OGAWA SATORU ,  YAMAGAMI SEIJI

IPC: G03G9/08 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a method for the development using a nonmagnetic single component by which a sufficient amount of toner can be always and stably transferred from a sponge-type supply roller to a developing roller and superior images can be obtained. SOLUTION: The method for the development using a nonmagnetic single component is carried out by supplying the following nonmagnetic single- component toner from a sponge-type supply roller to a developing roller, forming a thin layer of the toner on the developing roller with a layer regulating member, charging the toner and then using the toner for the development. The toner used comprises mother particles containing at least a binder resin and a coloring agent, and silica and particles of metal stearates are used as external additives to the mother particles. The particles of metal stearates are added by 0.05 to 1.0 part by mass to 100 parts by mass of the toner.

Abstract translation: 要解决的问题：提供一种使用非磁性单一成分进行显影的方法，通过该方法可以将足够量的调色剂从海绵型供给辊总是稳定地转印到显影辊上，并且可以获得优异的图像。 解决方案：使用非磁性单一成分进行显影的方法是通过将以下非磁性单组分调色剂从海绵型供给辊供给到显影辊来进行的，在显影辊上形成薄层的调色剂层 调节构件，对调色剂充电，然后使用调色剂进行显影。 使用的调色剂包括至少含有粘合剂树脂和着色剂的母粒子，二氧化硅和金属硬脂酸盐颗粒用作母体颗粒的外部添加剂。 相对于100质量份的调色剂，将金属硬脂酸盐颗粒添加0.05〜1.0质量份。

公开(公告)号：JP2013235085A

公开(公告)日：2013-11-21

申请号：JP2012106496

申请日：2012-05-08

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KUBO MASAHIKO

IPC: G03G9/08 ,  G03G9/09 ,  G03G15/20

Abstract: PROBLEM TO BE SOLVED: To provide a light fixable toner which can secure fixability even only with a fixing device of a laser fixing system, and has excellent color reproducibility, developer including the light fixable toner and a fixing method therefor.SOLUTION: A light fixable toner 1 is fixed onto a recording medium with a fixing device for radiating light having a wavelength in an absorption wavelength range of colorant. The light fixable toner 1 does not contain an infrared absorber, and comprises a toner mother particle 2 including a binder resin 5, colorant 6 and a silica particle 7, and a resin-coated layer 3 formed on the surface of the toner mother particle 2 and not containing the colorant. A shape coefficient SF-2 of the light fixable toner 1 is 105 or more and 125 or less.

Abstract translation: 要解决的问题：提供即使仅使用激光定影系统的定影装置，并且具有优异的颜色再现性，可以确保定影性的可定影调色剂，包括可定影调色剂的显影剂及其定影方法。解决方案：可光固定 调色剂1固定在具有用于照射着色剂吸收波长范围波长的光的定影装置的记录介质上。 光固定性调色剂1不含有红外线吸收剂，并且包括包含粘合剂树脂5，着色剂6和二氧化硅颗粒7的调色剂母粒2和形成在调色剂母粒2的表面上的树脂涂层3 并且不含着色剂。 可光固化调色剂1的形状系数SF-2为105以上且125以下。