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    • 1. 发明专利
    • Toner, developer and image forming apparatus
    • 调色剂,开发商和图像形成装置
    • JP2013140333A
    • 2013-07-18
    • JP2012246266
    • 2012-11-08
    • Ricoh Co Ltd株式会社リコー
    • SABE AKIYOSHIMORIYA YOSHIHIRONEMOTO TAICHIYAMAUCHI SHOKEINAKAJIMA YUKIKOMAKABE KEIJIAMEMORI SUZUKAYAMASHITA DAIKIYAMADA MASAHIDE
    • G03G9/087G03G15/08G03G15/20
    • G03G9/08755B82Y30/00G03G9/0806G03G9/0821G03G9/08788G03G9/08795G03G9/08797Y10S977/773
    • PROBLEM TO BE SOLVED: To provide a polylactic acid-based toner excellent in low-temperature fixability and heat-resistant storage properties, the toner capable of suppressing reduction in image density and occurrence of transfer unevenness at continuous printing, and also excellent in fine line reproducibility.SOLUTION: A toner includes a first binder resin and a second binder resin. The first binder resin is obtained by block copolymerization of at least a polyester skeleton A including a constitutional unit having a hydroxy carboxylic acid dehydrated and condensed in a repeating structure, and a skeleton B including no constitutional unit having a hydroxy carboxylic acid dehydrated and condensed in a repeating structure. The first binder resin has glass transition temperatures Tg1 and Tg2 measured by differential scan calorimetry at a temperature-rising rate of 5°C/min. The Tg1 is from -20°C to 20°C, and the Tg2 is from 35°C to 65°C. The second binder resin is a crystalline resin.
    • 要解决的问题:为了提供低温定影性和耐热储存性优异的聚乳酸类调色剂,能够抑制连续印刷时的图像浓度降低和转印不均匀性的调色剂,并且还具有优异的细线 再现性。解决方案:调色剂包括第一粘合剂树脂和第二粘合剂树脂。 第一粘结剂树脂通过至少包含具有重复脱水和缩合的羟基羧酸的结构单元的聚酯骨架A和不含具有脱水和缩合羟基羧酸的结构单元的骨架B进行嵌段共聚而获得 重复结构。 第一粘合剂树脂具有通过差示扫描量热法以5℃/ min的升温速度测量的玻璃化转变温度Tg1和Tg2。 Tg1为-20℃〜20℃,Tg2为35℃〜65℃。 第二粘合剂树脂是结晶树脂。
    • 2. 发明专利
    • Toner and developer
    • 调色板和开发者
    • JP2013120270A
    • 2013-06-17
    • JP2011267863
    • 2011-12-07
    • Ricoh Co Ltd株式会社リコー
    • SABE AKIYOSHIMORIYA YOSHIHIRONEMOTO TAICHIYAMAUCHI SHOKEINAKAJIMA YUKIKOAMEMORI SUZUKAMAKABE KEIJIYAMASHITA DAIKIYAMADA MASAHIDE
    • G03G9/087
    • PROBLEM TO BE SOLVED: To provide a polylactic acid-based toner which is excellent in low-temperature fixability and heat-resistant preservability and in which occurrences of toner scattering and surface staining are suppressed during continuous printing.SOLUTION: There is provided toner containing a first binder resin and a second binder resin, where the first binder resin is obtained by block copolymerization of at least a polyester skeleton A having a constitutional unit formed by dehydration condensation of hydroxycarboxylic acid in a repeating structure and a skeleton B not having a constitutional unit formed by dehydration condensation of hydroxycarboxylic acid in a repeating structure and has glass transition temperature Tg1 and Tg 2 as measured by differential scanning calorimetry at a heating rate of 5°C/min in which the Tg1 is -20°C to 20°C, the Tg2 is 35°C to 65°C, and the second binder resin has glass transition temperature Tg3 of 35°C to 65°C.
    • 要解决的问题:提供低温定影性和耐热保存性优异的聚乳酸类调色剂,并且在连续印刷期间抑制了调色剂飞散和表面染色的发生。 解决方案:提供含有第一粘合剂树脂和第二粘合剂树脂的调色剂,其中第一粘合剂树脂通过至少一种具有通过羟基羧酸的脱水缩合形成的结构单元的聚酯骨架A的嵌段共聚获得 重复结构和不具有通过羟基羧酸在重复结构中脱水缩合形成的结构单元的骨架B,并且通过差示扫描量热法以5℃/ min的加热速率测量的玻璃化转变温度Tg1和Tg2,其中 Tg1为-20℃至20℃,Tg2为35℃至65℃,第二粘合剂树脂的玻璃化转变温度Tg3为35℃至65℃。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Toner, developer and method for producing toner
    • 调色剂,开发商和生产调色剂的方法
    • JP2012185219A
    • 2012-09-27
    • JP2011046610
    • 2011-03-03
    • Ricoh Co Ltd株式会社リコー
    • WATANABE YOICHIRONORIKANE YOSHIHIROSHIDARA YASUSADAMASUDA MINORUMAKABE KEIJI
    • G03G9/087G03G9/08G03G9/10
    • PROBLEM TO BE SOLVED: To provide a toner, a developer and a method for producing a toner, by which a toner having a small particle diameter and mono-dispersibility can be efficiently produced without clogging in a discharge hole caused by a releasing agent, and the toner shows excellent hot offset resistance and can form high-definition and high-quality images free of contamination of a base for a long period of time.SOLUTION: A method for producing a toner includes: a toner composition liquid preparation step of preparing a toner composition liquid by dissolving or dispersing a binder resin, a colorant and a releasing agent in an organic solvent and dissolving the binder resin and the releasing agent; a droplet formation step of forming standing waves in the toner composition liquid in a liquid column resonance chamber having a plurality of discharge holes by liquid column resonance using vibrating means, and discharging the toner composition liquid from the discharge holes that are formed in a region corresponding to an antinode of the standing wave to form droplets; and a toner particle formation step of removing the organic solvent from the droplets to form toner particles in which the binder resin and the releasing agent cause a phase separation.
    • 要解决的问题:提供调色剂,显影剂和调色剂的制备方法,通过该调色剂可以有效地生产具有小粒径和单分散性的调色剂,而不会在由释放引起的排出孔中堵塞 并且调色剂具有优异的耐热粘合性,并且可以形成高清晰度和高质量的图像,其长期不受碱的污染。 调色剂组合物液体制备步骤,通过将粘合剂树脂,着色剂和脱模剂溶解或分散在有机溶剂中并溶解粘合剂树脂和 脱模剂; 液滴形成步骤,通过使用振动装置通过液柱共振在具有多个排出孔的液柱共振室中的调色剂组合物液体中形成驻波,并将调色剂组合物从形成在相应区域中的排出孔排出 到驻波的波腹来形成液滴; 以及调色剂颗粒形成步骤,从液滴中除去有机溶剂,形成粘合剂树脂和脱模剂引起相分离的调色剂颗粒。 版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • 静電荷像現像用トナー、並びに該トナーを用いた現像剤、及び画像形成装置
    • 用于静电电荷图像开发的调色剂,使用调色剂的开发者和图像形成装置
    • JP2015059952A
    • 2015-03-30
    • JP2013191461
    • 2013-09-17
    • 株式会社リコーRicoh Co Ltd
    • SAITO AKINORISUGIMOTO TSUYOSHIAMEMORI SUZUKAMAKABE KEIJISAWADA TOYOSHI
    • G03G9/08G03G9/087
    • 【課題】本発明は、(1)トナーの低温定着性と耐熱保存性を高いレベルで両立できるシャープメルト性を有し、機械的耐久性不足による現像機内でのトナー同士の凝集発生や、キャリア汚染や機内汚染、外添剤の埋没による帯電性や流動性の悪化を抑え、且つ、定着後にトナーの弾性率が速やかに回復することで画像の硬度が向上し、耐擦性に優れた高品位な画像が提供でき、(2)転写効率にすぐれ、且つ転写残トナーが少なく高品位な画像が得られ、(3)クリーニングにおいて高い信頼性が得られ、(4)帯電安定性と低温定着性を両立させたトナーを提供することを目的とする。【解決手段】少なくとも非晶性セグメント(A)と結晶性セグメント(B)からなるブロック共重合樹脂を含有するトナーであって、該トナーは親油性を有するチキソ性付与剤とアミノ基含有高分子化合物とを含むことを特徴とする静電荷像現像用トナー。【選択図】なし
    • 要解决的问题:为了提供(1)具有尖锐熔融性能的调色剂,其中可以高水平地实现调色剂的低温定影性和耐热储存性能,抑制调色剂聚集的发生 显影单元由于机械耐久性不足,载体污染和器件内污染以及由于外部添加剂的嵌入而导致的带电性和流动性的劣化,并且由于弹性模量的快速恢复而提高了图像的硬度 固色后的调色剂,从而提供优质的耐磨性图像,(2)具有优异的转印效率,减少转印残留调色剂,并提供高质量的图像,(3)提供高清洗可靠性,(4)达到 电荷稳定性和低温定影性。解决方案:提供一种调色剂,其至少包含由无定形片段(A)和哭泣构成的嵌段共聚物树脂 (B),并且调色剂包括具有亲油性的触变性赋予剂和含氨基的聚合物化合物。
    • 6. 发明专利
    • Toner and developer
    • 调色板和开发者
    • JP2013195486A
    • 2013-09-30
    • JP2012059842
    • 2012-03-16
    • Ricoh Co Ltd株式会社リコー
    • YAMASHITA DAIKIMORIYA YOSHIHIRONAKAJIMA YUKIKONEMOTO TAICHIYAMAUCHI SHOKEIMAKABE KEIJIYAMADA MASAHIDEAMEMORI SUZUKA
    • G03G9/08G03G9/087G03G9/10
    • G03G9/08755G03G9/0821G03G9/0825G03G9/08795G03G9/08797
    • PROBLEM TO BE SOLVED: To provide electrophotographic toner improved further in the fixing lower limit without being stuck when stored at a high temperature for a long time and without causing stain, filming or toner scattering even in the case of using a polylactic acid skeleton as a binder resin.SOLUTION: There is provided toner including a binder resin having a glass transition temperature Tg observed at one point between 25°C and 65°C. A structure appearing as a high phase difference image forms a structure which is dispersed in a structure appearing as a low phase difference image in a two-dimensional phase difference image observed by tapping mode AFM, a peak derived from a crystalline resin is observed in a range where a diffraction angle 2θ in a diffraction chart obtained by X-ray diffraction measurement of the toner is 20≤2θ(°)≤25 and a peak intensity (I1) derived from a crystalline resin observed is in the following range relative to an intensity (I2) of a halo derived from an amorphous composition: 0.2≤I1/I2≤1.
    • 要解决的问题:即使在使用聚乳酸骨架作为一种或多种的情况下,也可以在长时间保存在高温下而不会引起污点,成膜或调色剂散射,从而在固定下限中进一步提高电子照相调色剂 粘合剂树脂。溶液:提供包含在25℃至65℃之间的点处观察到玻璃化转变温度Tg的粘合剂树脂的调色剂。 出现高相差图像的结构形成分散在通过敲击模式AFM观察到的二维相位差图像中作为低相位差图像的结构的结构,在结晶树脂中观察到来自结晶树脂的峰 衍射角2度; 在通过调色剂的X射线衍射测量获得的衍射图中,20≤2<(°)≤25,从观察到的结晶性树脂得到的峰强度(I1)相对于 衍生自无定形组合物的卤素:0.2≤I1/I2≤1。
    • 7. 发明专利
    • Toner, and block copolymer
    • 调色剂和嵌段共聚物
    • JP2013080052A
    • 2013-05-02
    • JP2011219244
    • 2011-10-03
    • Ricoh Co Ltd株式会社リコー
    • MAKABE KEIJIYAMADA MASAHIDEMORIYA YOSHIHIRONEMOTO TAICHIYAMAUCHI SHOKEINAKAJIMA YUKIKOYAMASHITA DAIKIAMEMORI SUZUKASABE AKIYOSHI
    • G03G9/087C08G63/682C08G63/91
    • PROBLEM TO BE SOLVED: To provide a toner that has excellent low-temperature fixability and heat-resistant storage property, and suppresses the occurrence of filming and scumming, and to provide a block copolymer.SOLUTION: A toner includes base particles each containing a block copolymer that includes: a polyester block A; and a polyester block B including a fluoro group. When a phase image of a cross section of the block copolymer is observed using a tapping mode atomic force microscope, domains derived from the polyester block B with a large phase delay are dispersed in a domain derived from the polyester block A with a small phase delay. The average domain size of the domain derived from the polyester block B is 10 nm or more and 45 nm or less.
    • 要解决的问题:提供具有优异的低温定影性和耐热储存性的调色剂,并且抑制成膜和浮渣的发生,并提供嵌段共聚物。 解决方案:调色剂包括各自含有嵌段共聚物的基础颗粒,其包括:聚酯嵌段A; 和含有氟基的聚酯嵌段B. 当使用攻丝模式原子力显微镜观察嵌段共聚物截面的相图时,衍生自相位延迟大的聚酯嵌段B的畴分散在衍生自聚酯嵌段A的畴中,具有小的相位延迟 。 衍生自聚酯嵌段B的畴的平均结晶域大小为10nm以上且45nm以下。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Apparatus and method for manufacturing toner
    • 制造墨粉的装置和方法
    • JP2012141441A
    • 2012-07-26
    • JP2010293896
    • 2010-12-28
    • Ricoh Co Ltd株式会社リコー
    • MAKABE KEIJIWATANABE YOICHIROMASUDA MINORUSHIDARA YASUSADANORIKANE YOSHIHIRO
    • G03G9/087
    • PROBLEM TO BE SOLVED: To provide an apparatus and a method for efficiently manufacturing a very versatile toner whose droplets may be simultaneously discharged from a plurality of discharge holes, may be discharged with high single dispersibility over a large area and may be discharged in a large number per unit time.SOLUTION: An apparatus for manufacturing a toner comprises: droplet forming means for forming droplets by discharging a toner composition liquid including at least a resin and a coloring agent from a plurality of discharge holes; and particle forming means for forming particles by solidifying the droplets of the toner composition liquid. The droplet forming means includes a discharging structure fixed in a center portion and an outermost peripheral portion thereof and having the plurality of discharge holes in a portion not fixed; and a vibration generating body in a disk or ring shape. The plurality of discharge holes of the discharging structure are provided around the vibration generating body.
    • 要解决的问题:提供一种用于有效地制造其液滴可以从多个排放孔同时排出的多功能调色剂的装置和方法,可以在大面积上以高的单一分散性排出并且可以排出 每单位时间大量。 解决方案:一种用于制造调色剂的设备包括:液滴形成装置,用于通过从多个排放孔排放至少包含树脂和着色剂的调色剂组合物液体来形成液滴; 以及用于通过固化调色剂组合物液滴的液滴形成颗粒的颗粒形成装置。 液滴形成装置包括固定在中心部分和最外周部分的排出结构,并且在不固定的部分中具有多个排出孔; 以及盘或环形振动发生体。 排出结构的多个排出孔设置在振动发生体周围。 版权所有(C)2012,JPO&INPIT
    • 9. 发明专利
    • Manufacturing method of toner, manufacturing apparatus of toner, and toner
    • 调色剂的制造方法,调色剂和调色剂的制造设备
    • JP2012058419A
    • 2012-03-22
    • JP2010200301
    • 2010-09-07
    • Ricoh Co Ltd株式会社リコー
    • WATANABE YOICHIRONORIKANE YOSHIHIROSHIDARA YASUSADAMASUDA MINORUMAKABE KEIJI
    • G03G9/087
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of toner for highly effectively producing toner having a small particle diameter and a very narrow particle size distribution, suppressing clogging of a discharge port and a filming phenomenon on a photoreceptor due to mold release agent particles included in a toner composition liquid, and obtaining excellent offset resistance.SOLUTION: A manufacturing method of a toner of the present invention includes a process for forming a pressure standing wave through liquid column resonance by imparting vibration to a toner composition liquid in a liquid column resonance liquid chamber on which a discharge port is formed, and discharging the toner composition liquid dropwise from the discharge port formed on an area to be an antinode of the pressure standing wave. A toner composition liquid is obtained by dissolving or dispersing toner composition including at least resin, colorant, and a mold release agent into an organic solvent; the volume-based median diameter of the mold release agent is 0.1 μm to 0.7 μm; the content of the mold release agent in the toner composition liquid is one times (wt.%) to five times (wt.%) the reciprocal of the volume-based median diameter of the mold release agent; and the maximum particle size of the mold release agent is less than a quarter of the aperture diameter of the discharge port.
    • 要解决的问题:为了提供一种用于高效地生产具有小粒径和非常窄的粒度分布的调色剂的调色剂的制造方法,抑制由于脱模而导致的感光体上的排出口的堵塞和成膜现象 包含在调色剂组合物液中的试剂颗粒,并且获得优异的耐偏移性。 解决方案:本发明的调色剂的制造方法包括通过液柱共振形成压力驻波的方法,该方法通过在其上形成有排出口的液柱共振液室中的调色剂组合物液体施加振动 并且从形成在压力驻波的波腹区域上的排出口滴下调色剂组合物液体。 通过将包含至少树脂,着色剂和脱模剂的调色剂组合物溶解或分散到有机溶剂中而获得调色剂组合物液体; 脱模剂的基于体积的中值粒径为0.1μm〜0.7μm; 脱模剂在调色剂组合物液体中的含量是脱模剂的基于体积的中值直径的倒数的1倍(重量%)至5倍(重量%); 并且脱模剂的最大粒径小于排出口的孔径的四分之一。 版权所有(C)2012,JPO&INPIT
    • 10. 发明专利
    • トナー、現像剤、及び画像形成装置
    • 调色剂,开发商和图像形成装置
    • JP2014240944A
    • 2014-12-25
    • JP2013185204
    • 2013-09-06
    • 株式会社リコーRicoh Co Ltd
    • MAKABE KEIJISUGIMOTO TSUYOSHISAITO AKINORIAMEMORI SUZUKASAWADA TOYOSHIYAMASHITA YUJINAKAYAMA SHINYAYAMAMOTO JUNJIASAHINA DAISUKESEKIGUCHI AKIYUKI
    • G03G9/087
    • G03G9/08788G03G9/08755G03G9/08791G03G9/08793G03G9/08795G03G9/08797G03G15/0126
    • 【課題】低温定着性と耐熱保存性とを両立でき、現像機内でのトナー同士の凝集発生に伴う転写抜けを防止し、優れた耐擦性を有するトナーの提供。【解決手段】結着樹脂が結晶性ポリエステル樹脂と非晶性ポリエステル樹脂のブロック共重合樹脂を含有し、トナーのパルスNMRにより測定される、50℃におけるスピン−スピン緩和時間(t50)が0.05msec.以下であり、50℃から130℃まで昇温したときの130℃におけるスピン−スピン緩和時間(t130)が15msec.以上であり、130℃から70℃まで降温したときの70℃におけるスピン−スピン緩和時間(t’70)が1.00msec.以下であり、前記トナーの、タッピングモードAFMの位相像の最大値と最小値との中間値で二値化処理して得られる像が、位相差の大きい位相差像と位相差の小さい位相差像とを有し、大きい位相差像の分散径が150nm以下であるトナーである。【選択図】図1
    • 要解决的问题:为了提供能够实现低温定影性和耐热储存性的调色剂,防止与显影单元中的调色剂颗粒的聚集发生相关的转印省略,并且具有优异的耐磨性。解决方案:有 提供了一种调色剂,其包括含有结晶聚酯树脂和无定形聚酯树脂的嵌段共聚物树脂的粘合剂树脂,其中通过调色剂的脉冲NMR测量的在50℃下的自旋 - 自旋弛豫时间(t50)为0.05毫秒。 或更少; 当调色剂从50℃加热到130℃时,在130℃下的自旋 - 自旋弛豫时间(t130)为15毫秒。 或者更多; 当调色剂从130℃冷却至70℃时,70℃时的自旋 - 自旋弛豫时间(t'70)为1.00毫秒。 或更少; 并且通过二次化处理在点样模式AFM中观察到的调色剂的相位图像的最大值和最小值的中间值获得的图像具有相位差大的相位差图像和相位差小的相位差图像, 具有大相位差的相位差图像的分散直径为150nm以下。