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21.发明授权Toner particles having improved transfer efficiency and which comprise a pigment surface modifier 失效调色剂颗粒具有改善的转印效率并且包含颜料表面改性剂
公开(公告)号：US5118588A
公开(公告)日：1992-06-02
申请号：US501819
申请日：1990-03-30
申请人： Mridula Nair , Zona R. Pierce , Louis J. Sorriero , Dinesh Tyagi
发明人： Mridula Nair , Zona R. Pierce , Louis J. Sorriero , Dinesh Tyagi
IPC分类号： G03G9/09
CPC分类号： G03G9/09 , G03G9/0904
摘要： Pigmented toner particles are provided wherein, because of treatment with a surface modifier, an initially hydrophilic, sub-micron sized pigment is made hydrophobic. Toner particles are produced wherein the pigment is dispersed internally leaving surfaces substantially free from pigment.
摘要翻译： 提供着色调色剂颗粒，其中由于用表面改性剂处理，使初始亲水的亚微米级颜料被制成疏水性。 产生调色剂颗粒，其中颜料在内部分散留下基本上不含颜料的表面。
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公开(公告)号：US5108859A
公开(公告)日：1992-04-28
申请号：US509119
申请日：1990-04-16
CPC分类号： G03G5/0612 , G03G5/0542 , G03G5/0603 , G03G5/062 , G03G5/0629 , G03G5/0638 , G03G5/064 , G03G5/0698
摘要： A photoelectrographic element comprising a conductive layer in electrical contact with an acid photogenerating layer which is (a) free of photopolymerizable materials and (b) comprises an electrically insulating binder and an acid photogenerator is disclosed in which the binder comprises a polymer having as a repeating unit thereof a moiety selected from the group consisting of: ##STR1## wherein R represents an alkylene group having 2, 4 or 6 carbon atoms and X represents an aromatic radical. A method of forming images with the element also is disclosed.
摘要翻译： 一种光电元件，包括与酸性光生电子层电接触的导电层，其中（a）不含可光聚合材料，（b）包含电绝缘粘合剂和酸性光电发生器，其中粘合剂包含具有重复的聚合物 其单元为选自以下的部分：其中R表示具有2,4或6个碳原子的亚烷基，X表示芳族基团。 公开了一种用元件形成图像的方法。
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23.发明授权Thermally assisted process for transferring small electrostatographic toner particles to a thermoplastic bearing receiver 失效将小型静电调色剂颗粒转移到热塑性轴承接收器的热辅助工艺
公开(公告)号：US5045424A
公开(公告)日：1991-09-03
申请号：US476194
申请日：1990-02-07
申请人： Donald S. Rimai , Louis J. Sorriero , Dinesh Tyagi
发明人： Donald S. Rimai , Louis J. Sorriero , Dinesh Tyagi
CPC分类号： G03G5/14795 , G03G5/0596 , G03G5/14752 , G03G5/14756 , G03G7/008
摘要： A method transferring dry toner particles from the surface of an element which has a surface layer comprising polyester or polycarbonate thermoplastic polymeric binder resin matrix to a receiver which comprises a substrate having a polymeric coating on a surface in which the polymeric coating comprises a blend of:(i) from about 40 to about 90 percent by weight based on the total weight of the blend of a thermoplstic addition polymer and(i) from about 10 to about 60 percent by weight based on the total weight of the blend of a thermoplastic addition polymer having a ratio of weight average molecular weight to number average molecular weight in the range of from about 1:1 to 10:1.wherein the Tg of the thermoplastic addition polymers in the blend is less than approximately 10.degree. C. above the Tg of the toner binder and the surface energy of the thermoplastic polymer coating is approximately 38 to 43 dynes/cm by contacting the toner particles with the receiver which is heated to a temperature such that the temperature of the thermoplastic polymer coating on the receiver substrate during transfer is at least approximately 5.degree. C. above the Tg of the thermoplastic addition polymers in the blend. After transfer, the receiver is separated from the element while the temperature of the thermoplastic polymer coating is maintained above the Tg of the thermoplastic addition polymers.
摘要翻译： 一种从具有包含聚酯或聚碳酸酯热塑性聚合物粘合剂树脂基质的表面层的元件表面转移干调色剂颗粒的方法，其包含在表面上具有聚合物涂层的基材，其中聚合物涂层包含以下物质的共混物： （i）约40至约90重量％，基于热塑性加成聚合物的共混物的总重量，和（i）约10至约60重量％，基于热塑性添加剂的共混物的总重量 聚合物的重均分子量与数均分子量的比例在约1:1至10:1的范围内。 其中共混物中热塑性加成聚合物的Tg低于调色剂粘合剂的Tg以上约10℃，热塑性聚合物涂层的表面能约为38至43达因/厘米，通过使调色剂颗粒与 接收器，其被加热到使得转移期间接收器基底上的热塑性聚合物涂层的温度高于共混物中的热塑性加成聚合物的Tg至少约5℃的温度。 转移后，将接收器与元件分离，同时热塑性聚合物涂层的温度保持在热塑性聚合物的Tg以上。
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24.发明授权Thermally assisted transfer of electrostatographic toner particles to a thermoplastic bearing receiver 失效将热静电调色剂颗粒热辅助转移到热塑轴承接收器
公开(公告)号：US5043242A
公开(公告)日：1991-08-27
申请号：US455673
申请日：1989-12-22
摘要： A method is provided for non-electrostatically transferring dry toner particles which comprise a toner binder and have a particle size of less than 8 micrometers from the surface of an element which has a surface layer comprising a film-forming, electrically insulating polyester or polycarbonate thermoplastic polymeric binder resin matrix and a surface energy of not greater than approximately 47 dynes/cm, preferably from about 40 to 45 dynes/cm, to a receiver which comprises a substrate having a coating of a thermoplastic addition polymer on a surface of the substrate in which the Tg of the polymer is less than approximately 10.degree. C. above the Tg of the toner binder and the surface energy of the thermoplastic polymer coating is approximately 38 to 43 dynes/cm by contacting the toner particles with the receiver which is heated to a temperature such that the temperature of the thermoplastic polymer coating on the receiver substrate during transfer is at least approximately 15.degree. C. above the Tg of the thermoplastic polymer whereby virtually all of the toner particles are transferred from the surface of the element to the thermoplastic polymer coating on the receiver substrate and the thermoplastic polymer coating is prevented from adhering to the element surface during transfer in the absence of a layer of a release agent on the thermoplastic polymer coating or the element. After transfer, the receiver is separated from the element while the temperature of the thermoplastic polymer coating is maintained above the Tg of the thermoplastic polymer.The method is particularly well suited for providing images having high resolution and low granularity from very small size toner particles.
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公开(公告)号：US4968578A
公开(公告)日：1990-11-06
申请号：US345160
申请日：1989-04-28
CPC分类号： G03G13/16 , G03G7/00 , G03G7/0006 , G03G7/0053
摘要： Disclosed is an improved method of non-electrostatically transferring dry toner particles which comprise a toner binder and which have a particle size of less than 8 micrometers from an element to a receiver. The receiver comprises a substrate having a coating of a thermoplastic polymer thereon and a layer of a releasing agent on the coating, where the polymer has a T.sub.g less than 10.degree. C. above the T.sub.g of the toner binder, and the release agent is present in an amount sufficient to prevent the polymer from adhering to the element. The receiver is heated to a temperature such that its temperature during transfer is above the T.sub.g of the polymer.
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公开(公告)号：US06294301B1
公开(公告)日：2001-09-25
申请号：US09574775
申请日：2000-05-19
IPC分类号： G03G510
CPC分类号： C08G73/16 , C08G73/1082 , C08G73/14 , G03G5/142
摘要： In a photoconductive element comprising a conductive support, e.g., an electrically conductive film, drum or belt on which a negatively chargeable photoconductive layer is formed, an electrical barrier layer is formed between the support and the photoconductive layer. The barrier layer provides a high energy barrier to the injection of positive charges but transports electrons under an applied electric field. The barrier layer of the invention transports charge by electronic rather than ionic mechanisms and, therefore, is not substantially affected by humidity changes. The barrier layer comprises a polyester-co-imide, polyesterionomer-co-imide or polyamide-co-imide having covalently bonded as repeating units in the polymer chain, aromatic tetracarboxylbisimide groups of the formula: wherein Ar1 and Ar2 represent, respectively, tetravalent and trivalent aromatic groups of 6 to 20 carbon atoms.
摘要翻译： 在包含导电性支持体（例如形成有可带电电荷的光电导层的导电膜，鼓或带）的光电导元件中，在支撑体和光电导层之间形成电阻隔层。 阻挡层为注入正电荷提供了高能量势垒，但在施加的电场下传输电子。 本发明的阻挡层通过电子而不是离子机制传输电荷，因此基本上不受湿度变化的影响。 阻挡层包括在聚合物链中共价键合作为重复单元的聚酯 - 共 - 酰亚胺，聚酯共聚物 - 共 - 酰亚胺或聚酰胺 - 共 - 酰亚胺，下式的芳族四羧基双酰亚胺基团：其中Ar1和Ar2分别表示四价和 6-20个碳原子的三价芳族基团。
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公开(公告)号：US6068957A
公开(公告)日：2000-05-30
申请号：US107200
申请日：1998-06-29
CPC分类号： G03G5/14769 , G03C1/7614 , G03G5/14765 , G03C2001/7488 , G03C2001/7635 , G03C2003/006 , G03C3/00 , Y10S430/162
摘要： The present invention is an imaging element which includes a support, at least one imaging layer superposed on the support and a protective topcoat superposed farthest from the support. The topcoat includes a binder and lubricant droplets. The lubricant droplets are composed of a lubricant and a water soluble polymer containing heterocyclic aromatic nitrogen groups wherein the droplets are surrounded by a particulate stabilizer. The present invention is also directed to the lubricant droplets.
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28.发明授权
公开(公告)号：US5308733A
公开(公告)日：1994-05-03
申请号：US999021
申请日：1992-12-31
CPC分类号： G03G13/16 , G03G7/0046
摘要： A method is provided for non-electrostatically transferring dry toner particles which comprise a toner binder and have a particle size of 8 micrometers or less from the surface of an element to a receiver. The receiver comprises a substrate having a coating of a semi-crystalline polyester on a surface of the substrate. The semi-crystalline polyester has a glass transition temperature in a range of from approximately 5.degree. C. to 80.degree. C.; a melting temperature in a range of from approximately 40.degree. C. to 200.degree. C.; a weight average molecular weight in a range of from approximately 10,000 to 150,000; a number average molecular weight in a range of from approximately 5,000 to 75,000; a crystallinity of from approximately 5 to 25 percent by weight, based on the total weight of the polyester and a surface energy of from approximately 44 to 52 dynes/cm. The method involves preheating the receiver to a temperature ranging from approximately 70.degree. C. to 95.degree. C. and contacting the toner-bearing element with the receiver to effectuate the transfer of virtually 100% of the toner particles from the element to the receiver and thereafter separating the receiver from the element while the temperature of the semi-crystalline polyester coating on the receiver is maintained above the glass transition temperature of the semi-crystalline polyester.The method is particularly well suited for providing images having high resolution and low granularity from very small toner particles.
摘要翻译： 提供了一种用于非静电转印干调色剂颗粒的方法，所述干调色剂颗粒包含调色剂粘合剂并且具有从元件表面到接收体的8微米或更小的粒度。 接收器包括在衬底的表面上具有半结晶聚酯涂层的衬底。 半结晶聚酯的玻璃化转变温度在约5℃至80℃的范围内。 熔点范围为约40℃至200℃; 重均分子量在约10,000至150,000的范围内; 数均分子量在约5,000至75,000的范围内; 约5至25重量％的结晶度，基于聚酯的总重量和约44至52达因/厘米的表面能。 该方法包括将接收器预热至约70℃至95℃的温度，并使承载色粉的元件与接收器接触，以实现将实质上100％的调色剂颗粒从该元件转移到接收器， 然后将接收器与元件分开，同时接收器上的半结晶聚酯涂层的温度保持在半结晶聚酯的玻璃化转变温度以上。 该方法特别适用于从非常小的调色剂颗粒提供具有高分辨率和低粒度的图像。
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29.发明授权Toner composition with semi-crystalline polyester wax and method of preparation 失效具有半结晶聚酯蜡的调色剂组合物及其制备方法
公开(公告)号：US5298355A
公开(公告)日：1994-03-29
申请号：US975741
申请日：1992-11-13
CPC分类号： C09B67/0013 , G03G9/0804 , G03G9/0812 , G03G9/08755 , G03G9/09
摘要： A method is described for the preparation of electrostatographic toner particles which involves the surface treatment of a pigment by depositing thereon a coating of a low melting point hydrophobic semi-crystalline polyester wax. The method involves preparing a wax solution by dissolving at ambient temperature a low melting point hydrophobic semi-crystalline polyester wax in a first solvent capable of dissolving the wax at ambient temperature; forming a pigment dispersion by mixing at ambient temperature a pigment, a first polymer material and a second solvent in which the hydrophobic wax is insoluble at ambient temperature; admixing the wax solution with the pigment dispersion so resulting in precipitation of the wax upon the surface of the pigment; mixing the wax coated pigment dispersion thus formed with a solvent in which the hydrophobic wax is insoluble at ambient temperature and, optionally, a second polymer material and, optionally, a charge-control agent to form an organic phase; dispersing the organic phase in an aqueous phase comprising a particulate stabilizer and, optionally, a promoter; homogenizing the resultant mixture, and evaporating the solvent and washing and drying the resultant product.
摘要翻译： 描述了一种用于制备色谱调色剂颗粒的方法，其涉及通过在其上沉积低熔点疏水半结晶聚酯蜡的涂层来对颜料进行表面处理。 该方法包括通过在环境温度下将低熔点疏水半结晶聚酯蜡溶解在能够在室温下溶解蜡的第一溶剂中来制备蜡溶液; 通过在环境温度下混合颜料，第一聚合物材料和其中疏水蜡在环境温度下不溶的第二溶剂形成颜料分散体; 将蜡溶液与颜料分散体混合，使蜡沉淀在颜料的表面上; 将由此形成的蜡涂覆的颜料分散体与疏水蜡在环境温度下不溶的溶剂和任选的第二聚合物材料和任选的电荷控制剂混合以形成有机相; 将有机相分散在包含颗粒稳定剂和任选的助催化剂的水相中; 均化所得混合物，并蒸发溶剂并洗涤和干燥所得产物。
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公开(公告)号：US5266429A
公开(公告)日：1993-11-30
申请号：US992304
申请日：1992-12-21
CPC分类号： G03G5/0592 , C08G73/16 , G03G5/0571 , G03G5/0612 , G03G5/0637
摘要： An electrophotographic element comprises a polyester-imide that includes a dioxy component and a dicarbonyl component, one of which components contains an aromatic tetracarbonyldiimide group, and has the formula ##STR1## wherein Ar.sup.1 represents a tetravalent aromatic group having 6 to about 20 carbon atoms, R.sup.1 and R.sup.2 each independently represents an alkylene group having 2 to about 12 carbon atoms, L.sup.1 and L.sup.2 represent O or C.dbd.O; when L.sup.1 and L.sup.2 are O, Z.sup.1 and Z.sup.2 each independently represents an aromatic or aliphatic dicarbonyl group having about 4 to about 12 carbon atoms and Q represents an alkylenedioxy group having 2 to about 25 carbon atoms or ##STR2## wherein Ar.sup.2 represents a tetravalent aromatic group having 6 to about 20 carbon atoms that may be the same as or different from Ar.sup.1, R.sup.3 and R.sup.4 each independently represents an alkylene group having 2 to about 12 carbon atoms; and L.sup.3 and L.sup.4 are O; or when L.sup.1 and L.sup.2 are C.dbd.O, Z.sup.1 and Z.sup.2 each independently represent an alkylenedioxy group having 2 to about 25 carbon atoms and Q represents an aromatic or aliphatic dicarbonyl group having about 4 to about 12 carbon atoms or ##STR3## wherein Ar.sup.2, R.sup.3 and R.sup.4 are as defined above, and L.sup.3 and L.sup.4 are C.dbd.O; x represents the mole fraction of the dioxy or dicarbonyl component of the polyester-amide that contains the tetravalent aromatic group Ar.sup.1, and y represents the mole fraction of the dioxy or dicarbonyl component of the polyester-imide that contains Z.sup.1, wherein x is 0.05 to 1 and y is 0 to 0.95.
摘要翻译： 电子照相元件包括包含二氧基组分和二羰基组分的聚酯酰亚胺，其中一种组分含有芳族四羰基二酰亚胺基团，并具有式（I）其中Ar 1表示具有6至约20个的四价芳族基团 碳原子，R 1和R 2各自独立地表示具有2至约12个碳原子的亚烷基，L 1和L 2表示O或C = O; 当L1和L2为O时，Z1和Z2各自独立地表示具有约4至约12个碳原子的芳族或脂族二羰基，Q表示具有2至约25个碳原子的亚烷基二氧基，或者其中Ar 2表示四价芳族 具有6至约20个碳原子的可以与Ar 1相同或不同的基团，R 3和R 4各自独立地表示具有2至约12个碳原子的亚烷基; L3和L4为O; 或者当L1和L2为C = O时，Z1和Z2各自独立地表示具有2至约25个碳原子的亚烷基二氧基，Q表示具有约4至约12个碳原子的芳族或脂族二羰基或其中Ar 2， R3和R4如上所定义，L3和L4是C = O; x表示含有四价芳香族基团Ar 1的聚酯 - 酰胺的二氧基或二羰基成分的摩尔分数，y表示含有Z 1的聚酯 - 酰亚胺的二氧基或二羰基成分的摩尔分数，其中x为0.05〜 1，y为0〜0.95。
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