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1. 发明公开

EP0752625A3 Copolymers useful as charge injection barrier materials for photoreceptor 失效转让
标题翻译：适合作为针对电荷注入感光体用于阻挡材料的共聚物
公开(公告)号：EP0752625A3
公开(公告)日：1998-02-04
申请号：EP96304879.8
申请日：1996-07-02
申请人： Hewlett-Packard Company
发明人： Nguyen, Khe C. , Ganapathiappan, Sivapackia
IPC分类号： G03G5/147 , G03G5/14
CPC分类号： H01L51/0043 , G03G5/142 , G03G5/1473 , G03G5/14734 , G03G5/14739 , H01L51/004 , H01L51/0042 , H01L51/0052 , H01L51/0062 , H01L51/42
摘要： A thin ( 22 ) is provided on a top surface of a charge generation layer ( 18 ) of an inverse dual layer photoreceptor ( 10 ) comprising the charge generation layer ( 18 ) and a hole transport layer ( 16 ) or on at least one surface of a single photoconductor layer ( 24 ) of a single layer photoreceptor ( 10' ) or on an electrically conductive substrate ( 12 ) of a conventional dual layer photoreceptor ( 10" ) comprising the charge generation layer ( 18 ) and a charge transport layer ( 26 ) using either hole transport or electron transport. The charge injection barrier ( 22 ) comprises at least one copolymer given by the formula A x B y C z , where A is a charge injection prohibitor to prevent leakage of charge from the surface, B is a solubility control moiety to control solubility of the polymer and its glass transition temperature, and C is an electron charge moiety for neutralizing surface charge. Each of the moieties A, B, and C contain a vinyl group. The value of x is at least about 0.01, y is within the range of 0 to about 0.3, and z is within the range of about 0.01 to 0.4, with the sum of x+y+z=1. The charge injection barrier ( 22 ) employing these copolymers (1) stops the charge injection from the surface and stabilizes the dark decay and the charge acceptance of the device; (2) allows an electron transfer/transport from the charge generation layer ( 18, 24 ) to the surface in order to effectively neutralize the surface charge while avoiding the charge build-up with repeat cycle due to electron trapping; and (3) controls the polymer chain movement phenomena associated with the solubility and the glass transition temperature T g .

2. 发明公开

EP0805166A2 Low-temperature cure polyvinylbutyral 失效
标题翻译：聚合乙烯醇缩丁醛
公开(公告)号：EP0805166A2
公开(公告)日：1997-11-05
申请号：EP97302886.3
申请日：1997-04-28
申请人： Hewlett-Packard Company
发明人： Nguyen, Khe C. , Ganapathiappan, Sivapackia
IPC分类号： C08F8/12 , C08F8/04
CPC分类号： C08F8/04 , C08F8/12 , C08F16/06
摘要： Poly(vinyl butyral) compounds of Formula I
where

R 1 is alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, or alkyl aralkyl;
Z is -OH or -NHR 2 , where R 2 is independently alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, alkyl aralkyl, or R 2 is H.
x is 60 to 95 mol %, y is 3 to 40 mol %, z is 0 to 20 mol %; and
x + y + z is 100 mol %, a process for preparing compounds of Formula I, an intermediate in the synthesis of compounds of Formula I, and a photoconductor for electrophotography containing a compound of Formula I as a binder in the charge generation layer are described. These compounds can be crosslinked in the absence of strong acidic and basic catalysts at relatively low temperatures compared with conventional polyvinyl butyral, show good adhesion to a wide variety of surfaces, and exhibit high photoresponses when used in charge generation layers of photoconductors.
摘要翻译：式I的聚（乙烯醇缩丁醛）化合物其中R 1是烷基，二烷基醚，烷基羰基，环烷基，环烷基烷基，芳基，芳基羰基，烷芳基羰基，芳烷基或烷基芳烷基; Z是-OH或-NHR 2，其中R 2独立地是烷基，二烷基醚，烷基羰基，环烷基，环烷基烷基，芳基，芳基羰基，烷芳基羰基，芳烷基，烷基芳烷基或R 2是 H x为60〜95摩尔％，y为3〜40摩尔％，z为0〜20摩尔％。并且x + y + z为100摩尔％，制备式I化合物的方法，式I化合物的合成中的中间体和电荷产生层中含有式I化合物作为粘合剂的电子照相用光电导体被描述。与常规的聚乙烯醇缩丁醛相比，这些化合物在相对较低的温度下，在不存在强酸性和碱性催化剂的情况下可以交联，对各种表面表现出良好的粘附性，并且当用于光电导体的电荷产生层时表现出高的光响应。

3. 发明授权

EP0752625B1 Copolymers useful as charge injection barrier materials for photoreceptor 失效转让
标题翻译：适合作为针对电荷注入感光体用于阻挡材料的共聚物
公开(公告)号：EP0752625B1
公开(公告)日：2000-11-15
申请号：EP96304879.8
申请日：1996-07-02
申请人： Hewlett-Packard Company
发明人： Nguyen, Khe C. , Ganapathiappan, Sivapackia
IPC分类号： G03G5/14 , G03G5/147
CPC分类号： H01L51/0043 , G03G5/142 , G03G5/1473 , G03G5/14734 , G03G5/14739 , H01L51/004 , H01L51/0042 , H01L51/0052 , H01L51/0062 , H01L51/42

4. 发明公开

EP0674234A2 Polymeric binders having saturated ring of single layer positively charged organic photoconductor 失效
标题翻译：聚合物粘合剂用饱和环单元为带正电荷的，有机Einschichtphotorezeptoren。
公开(公告)号：EP0674234A2
公开(公告)日：1995-09-27
申请号：EP95301274.7
申请日：1995-02-28
申请人： Hewlett-Packard Company
发明人： Nguyen, Khe C. , Ganapathiappan, Sivapackia , Ha, Tan
IPC分类号： G03G5/05
CPC分类号： G03G5/0567 , G03G5/0532 , G03G5/0542 , G03G5/055 , G03G5/0557 , G03G5/0589
摘要： Composites comprising polymeric binders and phthalocyanine pigments to form a single layer positive organic photoconductor are provided for use in electrophotography. The polymeric binders comprise an aliphatic polymer or copolymer having a saturated ring for each repeat unit either included in the polymer chain or pendant therefrom and about 4 to 35% of functional groups such as -OH, -SH, >N-, >NH, and -NH 2 per repeat unit. The saturated ring portion, being essentially non-polar, or at least less polar than an unsaturated ring, maintains the specific morphology of the phthalocyanine pigments commonly employed in positive charge organic photoconductors (OPCs) and results in a stable dispersion required for the stable performance of the OPC. Keeping the functional groups listed above to less than about 35% ensures that the photoresponse is not reduced to an unacceptable level. Heating of the composite is used to control the concentration of the functional groups. One or more separate thermal carrier generation control agents comprising compounds containing the functional group(s) may be used to provide part or all of the functional groups in the composite.
摘要翻译：提供了用于电子摄影的复合材料，其包括聚合物粘合剂和酞菁颜料以形成单一的层阳性有机光电导体。聚合物粘合剂包括脂肪族聚合物或者具有用于每个重复单元无论是包括在从聚合物链或侧挂有和饱和环共聚物的约4％至35％的官能团：例如OH，SH，> N - ，> NH，和NH 2每重复单元。饱和环部分，基本上是非极性的，或至少比不饱和的环上的极性较小的，维持在正电荷有机光电导体（OPCs的）和结果通常使用在用于稳定的性能所需要的稳定的分散体中的酞菁颜料的具体形态的OPC。保持上面列出的官能团至小于约35％，确保没有光响应在不可接受的程度也不会降低到。该复合材料的加热是用来控制所述官能团的浓度。一个或多个单独的热载流子产生控制剂包括包含所述官能团（一个或多个）的化合物可用于提供部分或全部复合物中的官能团。

5. 发明授权

EP1035179B1 Ink-jet printing ink compositions having superior smear-fastness 有权
标题翻译：对于具有高耐污损性的喷墨打印机的油墨组合物
公开(公告)号：EP1035179B1
公开(公告)日：2006-02-22
申请号：EP00301396.8
申请日：2000-02-22
申请人： Hewlett-Packard Company
发明人： Ganapathiappan, Sivapackia , Nguyen, Khe C.
IPC分类号： C09D11/00
CPC分类号： C09D11/30

6. 发明授权

EP1020498B1 Preparation of permanent color inks from water-soluble colorants using specific phosphonium salts 有权
标题翻译：水溶性染料和特定鏻盐的彩色油墨的制备
公开(公告)号：EP1020498B1
公开(公告)日：2002-10-02
申请号：EP00300096.5
申请日：2000-01-10
申请人： Hewlett-Packard Company, A Delaware Corporation
发明人： Nguyen, Khe C. , Adamic, Raymond J. , Ganapathiappan, Sivapackia
IPC分类号： C09D11/00
CPC分类号： C09D11/328

7. 发明公开

EP0752625A2 Copolymers useful as charge injection barrier materials for photoreceptor 失效转让
标题翻译： Copolymere geeignet als Sperrmaterial gegen LadungsinjektionfürPhotorezeptoren
公开(公告)号：EP0752625A2
公开(公告)日：1997-01-08
申请号：EP96304879.8
申请日：1996-07-02
申请人： Hewlett-Packard Company
发明人： Nguyen, Khe C. , Ganapathiappan, Sivapackia
IPC分类号： G03G5/147 , G03G5/14
CPC分类号： H01L51/0043 , G03G5/142 , G03G5/1473 , G03G5/14734 , G03G5/14739 , H01L51/004 , H01L51/0042 , H01L51/0052 , H01L51/0062 , H01L51/42
摘要： A thin ( 22 ) is provided on a top surface of a charge generation layer ( 18 ) of an inverse dual layer photoreceptor ( 10 ) comprising the charge generation layer ( 18 ) and a hole transport layer ( 16 ) or on at least one surface of a single photoconductor layer ( 24 ) of a single layer photoreceptor ( 10' ) or on an electrically conductive substrate ( 12 ) of a conventional dual layer photoreceptor ( 10" ) comprising the charge generation layer ( 18 ) and a charge transport layer ( 26 ) using either hole transport or electron transport. The charge injection barrier ( 22 ) comprises at least one copolymer given by the formula A x B y C z , where A is a charge injection prohibitor to prevent leakage of charge from the surface, B is a solubility control moiety to control solubility of the polymer and its glass transition temperature, and C is an electron charge moiety for neutralizing surface charge. Each of the moieties A, B, and C contain a vinyl group. The value of x is at least about 0.01, y is within the range of 0 to about 0.3, and z is within the range of about 0.01 to 0.4, with the sum of x+y+z=1. The charge injection barrier ( 22 ) employing these copolymers (1) stops the charge injection from the surface and stabilizes the dark decay and the charge acceptance of the device; (2) allows an electron transfer/transport from the charge generation layer ( 18, 24 ) to the surface in order to effectively neutralize the surface charge while avoiding the charge build-up with repeat cycle due to electron trapping; and (3) controls the polymer chain movement phenomena associated with the solubility and the glass transition temperature T g .
摘要翻译：在包括电荷产生层（18）的反向双层感光体（10）的电荷产生层（18）的顶表面上提供薄（<5μm）电荷注入阻挡层（22）层（16）或在单层感光体（10'）的单个感光体层（24）的至少一个表面上或在包含电荷产生的常规双层感光体（10“）的导电基底（12）上电荷注入阻挡层（22）包含至少一种由式AxByCz给出的共聚物，其中A是电荷注入禁止剂以防止电荷泄漏从表面来看，B是溶解度控制部分，用于控制聚合物的溶解度及其玻璃化转变温度，C是用于中和表面电荷的电子电荷部分，部分A，B和C各自含有乙烯基。 x的值是a 至少约0.01，y在0至约0.3的范围内，z在约0.01至0.4的范围内，x + y + z = 1的和。使用这些共聚物（1）的电荷注入阻挡层（22）停止从表面注入电荷，稳定器件的暗衰减和电荷接受性; （2）允许从电荷产生层（18,24）到表面的电子转移/传输，以便有效地中和表面电荷，同时避免由于电子捕获而引起的电荷积累与重复循环; 和（3）控制与溶解度和玻璃化转变温度Tg相关的聚合物链移动现象。

8. 发明公开

EP0697633A3 Reusable inverse composite dual-layer organic photoconductor using specific polymers available for diffusion coating process with non-chlorinated solvents 失效
标题翻译：可重复使用的，逆，两层复合材料，有机Photokonduktor，使用适合于与非氯化溶剂扩散涂层工艺的特定聚合物，
公开(公告)号：EP0697633A3
公开(公告)日：1997-01-02
申请号：EP95305110.9
申请日：1995-07-21
申请人： Hewlett-Packard Company
发明人： Nguyen, Khe C. , Ganapathiappan, Sivapackia , Ha, Tan
IPC分类号： G03G5/047 , G03G5/05
CPC分类号： G03G5/0546 , G03G5/047 , G03G5/0542 , G03G5/0557 , G03G5/0564 , G03G5/0571 , G03G5/0575 , G03G5/0578 , G03G5/073 , G03G5/076 , G03G5/078
摘要： An inverse dual-layer organic photoconductor ( 10 ) comprising a charge generation layer (CGL) ( 12 ) formed on top of a charge transport layer (CTL) ( 14 ), in turn formed on a substrate ( 16 ) such as a web (drum) or subbing layer, is disclosed, in which the CGL ( 12 ) includes a flexible polymer having a glass transition temperature (T g ) of less than about 120°C as the binder for a charge generation species and in which the CTL ( 14 ) includes a rigid polymer having a T g of greater than about 120°C as the binder for a charge transport species. The CTL ( 14 ) is coated onto the substrate ( 16 ), using a non-chlorinated solvent. The CGL ( 12 ) is coated onto the CTL ( 14 ), also using a non-chlorinated solvent, under conditions so as to form a diffused region ( 24 ) at the boundary ( 22 ) of the CGL ( 12 ) and CTL ( 14 ). This type of photoconductor ( 10 ) yields extremely low noise, exceptionally high-speed and excellent stable charging/discharging performance in the xerography process at room temperature and elevated temperature.
摘要翻译：逆双层有机光电导体（10）包括形成在电荷传输层（CTL）的顶部上的电荷产生层（CGL）（12）（14）反过来基板形成的（16）上：诸如web（鼓）或胶层，被光盘游离缺失，柔性其中CGL（12）包括具有小于约120℃的玻璃化转变温度（Tg）作为粘合剂用于电荷产生物质，并且其中聚合物的CTL（14 ）包括具有更大的Tg高于约120℃作为粘合剂用于电荷输送物质的刚性聚合物。的CTL（14）涂覆到基片（16），使用非氯化溶剂。该CGL（12）涂覆在CTL（14），所以使用非氯化溶剂的条件下，以形成在所述CGL的边界（22）（12）和CTL一个扩散区域（24）（14 ）。这种类型的感光体（10）的产生极低的噪声，异常高的速度和优异的稳定的充电/放电性能在静电复印过程在室温和升高的温度。

9. 发明授权

EP1239013B1 Novel lightfast additive molecule in ink jet ink formulations 有权
标题翻译：新耐光添加剂在喷墨彩色
公开(公告)号：EP1239013B1
公开(公告)日：2004-12-29
申请号：EP02250851.9
申请日：2002-02-07
申请人： Hewlett-Packard Company
发明人： Nguyen, Khe C. , Ganapathiappan, Sivapackia
IPC分类号： C09D11/00
CPC分类号： C09D11/38

10. 发明公开

EP1300422A1 Amphipathic polymer particles and methods of manufacturing the same 有权
标题翻译： Amphipatische Polymerpartikel und Verfahren zu deren Herstellung
公开(公告)号：EP1300422A1
公开(公告)日：2003-04-09
申请号：EP02256513.9
申请日：2002-09-19
申请人： Hewlett-Packard Company
发明人： Ganapathiappan, Sivapackia
IPC分类号： C08F2/22 , C08F4/00 , C09D11/00
CPC分类号： C08F2/22 , Y10S526/909
摘要： The invention is directed to amphipathic polymeric particles that serve as both the dispersant and the binder in water based inks, ink compositions containing these particles, and methods for making the particles. The polymeric particles contain both hydrophilic and hydrophobic moieties with a pre-determined structure, and have an average diameter of 50 to 500 nm. The amphipathic polymeric particles may be prepared by a side-chain conversion method or a polymerization process involving an ATRP step, with or without a cross-linking agent. This invention improves the stability of polymer and inks by both ionic and steric stabilization of the suspended polymer particles.
摘要翻译：本发明涉及用作水基油墨中的分散剂和粘合剂两者的两亲性聚合物颗粒，以及含有这些颗粒的油墨组合物和制备该颗粒的方法。聚合物颗粒含有具有预定结构的亲水部分和疏水部分，平均直径为50〜500nm。两亲性聚合物颗粒可以通过侧链转化方法或涉及ATRP步骤的聚合方法制备，所述方法包括或不使用交联剂。本发明通过悬浮聚合物颗粒的离子和空间稳定化来提高聚合物和油墨的稳定性。

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