CN1963685B - Developing roller and imaging apparatus comprising the same - Google Patents

Developing roller and imaging apparatus comprising the same Download PDF

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Publication number
CN1963685B
CN1963685B CN 200610138136 CN200610138136A CN1963685B CN 1963685 B CN1963685 B CN 1963685B CN 200610138136 CN200610138136 CN 200610138136 CN 200610138136 A CN200610138136 A CN 200610138136A CN 1963685 B CN1963685 B CN 1963685B
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China
Prior art keywords
developing roller
mass
roller according
parts
surface coating
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CN 200610138136
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Chinese (zh)
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CN1963685A (en
Inventor
杉本卓郎
杉村考之
河野耕太
田河宏高
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株式会社普利司通
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Priority to JP2005327439A priority Critical patent/JP5204952B2/en
Priority to JP2005327564A priority patent/JP5204953B2/en
Priority to JP2005327432A priority patent/JP5204951B2/en
Priority to JP2005-327439 priority
Priority to JP2005-327564 priority
Priority to JP2005-327512 priority
Priority to JP2005-327432 priority
Priority to JP2005327512A priority patent/JP2007131770A/en
Priority to JP2006112291A priority patent/JP5025983B2/en
Priority to JP2006-112291 priority
Application filed by 株式会社普利司通 filed Critical 株式会社普利司通
Publication of CN1963685A publication Critical patent/CN1963685A/en
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Publication of CN1963685B publication Critical patent/CN1963685B/en

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Abstract

There is a developing roller having a low compression permanent strain without contaminating a photosensitive drum and deteriorating toners. The developing roller (1) comprises a shaft (2), an elastic layer (3) formed on an outer periphery of the shaft (2) and a surface coating layer (4) formed on an outer peripheral face of the elastic layer (3), in which the surface coating layer (4) comprises a urethane resin formed by crosslinking a lactone-modified polyol with a polyisocyanate. The urethane resin is preferable to be formed by crosslinking the lactone-modified polyol with two or more kinds of polyisocyanates.

Description

显影辊和包括该显影辊的成像装置 And an image forming apparatus including the developing roller of the developing roller

技术领域 FIELD

[0001] 本发明涉及显影辊和包括该显影辊的成像装置,更特别地涉及在高温、高湿度环境下长时间使用中具有低的压缩永久变形和优良的耐调色剂熔化性的显影辊,和包括这样的显影辊并且能够形成优良图像的成像装置。 [0001] The present invention relates to a developing roller and an image forming apparatus including the developing roller, and more particularly relates to a developing roller having a low compression set and excellent resistance to toner fusion of prolonged use under high temperature, high humidity environment , and an imaging apparatus comprising such a developing roller and capable of forming an excellent image.

[0002] 发明背景 [0002] Background of the Invention

[0003] 在电子照相系统例如复印机、打印机等的成像装置中,加压的显影方法是公知的显影方法:其中将调色剂供给到保持潜像的感光鼓上以通过附着在感光鼓上的潜像上的调色剂显现出潜像。 [0003] In the electrophotographic system image forming apparatus such as a copier, a printer or the like, the pressure developing method is a developing method known: wherein supplying the toner to the latent image held on the photosensitive drum to the photosensitive drum by attaching the the toner on the latent image showing the latent image. 在这类加压显影方法中,例如将感光鼓充电至某一电压,然后通过照相平板印刷机在感光鼓上形成静电潜像,此后将载有调色剂的显影辊与保持有潜像的感光鼓接触以将调色剂附着在感光鼓上的潜像上。 In such a pressure developing method, for example, the photosensitive drum is charged to a certain voltage, and then an electrostatic latent image formed on the photosensitive drum by a photolithography printer, after which the developing roller carrying the toner to the latent image held contacting the photosensitive drum on the toner adhering to the latent image on the photosensitive drum.

[0004] 在上面的加压显影方法中,应该使显影辊旋转同时确保保持对感光鼓的闭合状态,以使得其具有这样的结构:由半导电的弹性体制成的半导电弹性层或者其发泡体形成于由优良导电材料例如金属等制成的轴的外围上,该半导电的弹性体通过将炭黑或金属粉末分散在弹性体例如聚氨酯、硅橡胶、丙烯腈-丁二烯橡胶(NBR)、乙烯-丙烯-二烯橡胶(EPDM)、表氯醇橡胶(ECO)等中而获得。 [0004] In the above pressure developing method, the developing roller should be maintained while ensuring the rotation of the photosensitive drum in the closed state, so that it has such a structure: into a semiconducting elastomer, or a semi-conductive elastic layer made bubbles formed on the periphery of a good conductive material such as metal or the like of the shaft, the semi-conductive elastomer by carbon black or metal powder dispersed in the elastomer such as polyurethane, silicone rubber, an acrylonitrile - butadiene rubber ( NBR), ethylene - propylene - diene rubber (EPDM), epichlorohydrin rubber (ECO) and the like is obtained. 出于控制充电特性或调色剂的粘附性、防止由于弹性层等的感光鼓的污染的目的,还可以在弹性层的表面上进一步形成表面涂层。 For controlling the charging characteristics or adhesion of the toner, since the purpose of preventing contamination of the elastic layer of the photosensitive drum or the like, may be further formed on the surface of the elastic surface coating layer.

[0005] 近年来,使用低熔点调色剂的成像装置随着成像装置中的色化处理、高速性能、 高质量图像和节能的改进而逐渐增多。 [0005] In recent years, low-melting toner color image forming apparatus as the process in the image forming apparatus, high-speed performance, high image quality and improved energy efficiency gradually increased. 当使用低熔点调色剂时,这类调色剂由于重复地进行构成部件之间的压缩或摩擦造成调色剂的团聚、熔化等而受到破坏,因此容易造成不良成像例如起雾等。 When a low-melting toner, since the toner is repeatedly such compression or friction between the member constituting the toner causes agglomeration, melting or the like is damaged, it is easy to cause poor image forming e.g. fogging and the like. 即,在调色剂墨盒的使用寿命终了时,损坏调色剂而使得带电特性不均勻,以致于引起不良成像的产生或使用寿命变短的问题。 That is, at the end of the service life of the toner cartridge, such that damage to the toner charging properties non-uniform, so as to generate imaged or adverse life becomes short. 因此,需要几乎不会损坏调色剂的低硬度显影辊,并且公知有其中将基材(弹性层)软化的显影辊(JP-A-2003-15404) 和其中通过混合己二酸酯化合物作为增塑剂而将涂覆膜(表面涂层)软化的显影辊(JP-A-2005-128067)。 Therefore, almost no damage to the low hardness of the developing roller of the toner, and wherein the substrate is known (elastic layer) to soften the developing roller (JP-A-2003-15404), and wherein by mixing the compound as adipates the plasticizer coating film (coating) the development roller softened (JP-a-2005-128067).

[0006] 另一方面,当将低硬度显影辊用于成像装置时,有这样的问题:容易在显影辊的表面上由于感光鼓、刮板、进料辊等的挤压而造成痕迹。 [0006] On the other hand, when a low hardness of the developing roller for an image forming apparatus, has a problem: since the pressing readily photosensitive drum, a blade, a feed roller or the like on the surface marks caused by the developing roller. 为此,近年来需要提供不仅具有低的硬度而且具有低的压缩永久变形的显影辊。 For this reason, in recent years, not only a need to provide low hardness and low compression permanent deformation of the developing roller. 然而,具有低硬度的材料趋于增加压缩永久变形,以致于非常难以将硬度和压缩永久变形平衡在足够低的程度下(参见JP-A-H08-190263、JP-A-2001-75354 和JP-A-2004-67726)。 However, a material having low hardness tends to increase compression set, so that very difficult to balance the hardness and compression permanent deformation at a sufficient extent (see JP-A-H08-190263, JP-A-2001-75354 and JP -A-2004-67726). 同样,当使用混合有作为增塑剂的己二酸酯化合物的涂覆膜时,该涂覆膜变软,但造成了这样的问题:在高温、高湿度环境下长时间使用中造成了压缩永久变形变大而且引起调色剂熔化而在图像中产生了垂直的条纹。 Similarly, when mixed with a compound coating film adipate as a plasticizer, the coating film becomes soft, but this causes a problem: the use for a long time at a high temperature, high humidity environment caused by compression permanent deformation becomes large but also causes the toner melted to a vertical stripes in the image.

发明内容 SUMMARY

[0007] 因此,本发明的目的是解决常规技术的上述问题并且提供在高温、高湿度环境下长时间使用中具有特别低的压缩永久变形和优良的耐调色剂熔化性的显影辊。 [0007] Accordingly, an object of the present invention is to solve the aforementioned problems of the conventional techniques and to provide a developing roller having a particularly low compression set and excellent resistance of the toner melted prolonged use under high temperature, high humidity environment. 另外,本发明的另一目的是提供包括该显影辊并且能够稳定地形成优良图像而不会造成不良成像例如起雾等的成像装置。 Further, another object of the present invention is to provide a developing roller which comprises forming an excellent image and capable of stably without causing defective image forming apparatus forming like e.g. fogging.

[0008] 为了实现以上目的,本发明人做了各种研究并且发现:在带有表面涂层的显影辊中,在该表面涂层中使用通过将内酯改性的多元醇与多异氰酸酯交联获得的聚氨酯树脂, 从而使得显影辊的硬度和压缩永久变形足够地低而几乎不会损坏调色剂,还可以提高在高温、高湿度环境下长时间使用中耐调色剂熔化性,并且进一步地可以通过将该显影辊组装在成像装置中而稳定地形成优良的图像。 [0008] To achieve the above object, the present inventors have made various studies and found: the developing roller having a surface coating layer, by using a lactone-modified polyol and a polyisocyanate cross the surface coating linked polyurethane resin obtained, so that the hardness of the developing roller and a sufficiently low compression set while hardly damaging the toner, use may also improve the resistance of the toner is melted at a high temperature for a long time, high-humidity environment, and It can be further stably form an excellent image in the image forming apparatus by a developing roller assembly.

[0009] S卩,根据本发明的显影辊在于这样的显影辊:其包括轴、形成于该轴外围上的弹性层,和形成于该弹性层的外围面上的表面涂层,其中该表面涂层包含通过将内酯改性的多元醇与多异氰酸酯交联形成的聚氨酯树脂。 [0009] S Jie, the developing roller of the present invention is such a developing roller: comprising a shaft, an elastic layer formed on the periphery of the shaft, and a surface coating layer formed on the peripheral surface of the elastic layer, wherein the surface by coating a polyurethane resin containing a lactone-modified polyol and a polyisocyanate crosslinking formation.

[0010] 在本发明的显影辊的优选实施方案中,内酯改性的多元醇具有数均分子量(Mn) 为1000-5000,其为通过凝胶渗透色谱测量的换算成聚苯乙烯的数均分子量,和由通过凝胶渗透色谱测量的换算成聚苯乙烯的重均分子量(Mw)与数均分子量(Mn)的比值表示的分子量分布(Mw/Mn)不超过2. 5。 [0010] In a preferred embodiment of the developing roller of the present invention, a lactone-modified polyol has a number average molecular weight (Mn) 1000 to 5000, the number of which is measured by gel permeation chromatography in terms of polystyrene molecular weight average molecular weight, and the weight in terms of polystyrene as measured by gel permeation chromatography weight average molecular weight (Mw) to number average molecular weight (Mn) represents the ratio of distribution (Mw / Mn) is not more than 2.5.

[0011] 在本发明的显影辊的另一优选实施方案中,通过将内酯改性的多元醇与至少两种多异氰酸酯交联而形成聚氨酯树脂。 [0011] In another preferred embodiment of the developing roller of the present invention, by the lactone-modified polyol of at least two polyisocyanate to form a polyurethane with a crosslinking resin. 在该情况下,多异氰酸酯优选含有异氰脲酸酯改性的1,6-己二异氰酸酯或异佛尔酮二异氰酸酯的至少一种。 In this case, the polyisocyanate preferably comprising hexamethylene diisocyanate, isocyanurate-modified or isophorone diisocyanate is at least one.

[0012] 在本发明的显影辊的另一优选实施方案中,内酯改性的多元醇具有多异氰酸酯的异氰酸酯基团(NCO)与羟基(OH)的摩尔比([NC0]/[0H])为1.0-2.5。 [0012] In another preferred embodiment of the developing roller of the present invention, a lactone-modified polyol having a polyisocyanate an isocyanate group (NCO) and the molar ratio of hydroxyl (OH) a ([NC0] / [0H] ) from 1.0 to 2.5.

[0013] 在本发明的显影辊的另一个优选实施方案中,表面涂层具有在25°C下的储能模量(E,)为3-50MPa。 Storage modulus (E,) [0013] In another preferred embodiment of the developing roller of the present invention, the surface coating having at 25 ° C and is 3-50MPa.

[0014] 在本发明的显影辊的进一步优选实施方案中,表面涂层的厚度不超过30 μ m。 [0014] In a further preferred embodiment of the present invention, the developing roller, the thickness of the surface coating layer is not more than 30 μ m.

[0015] 在本发明的显影辊的进一步优选实施方案中,表面涂层的聚氨酯树脂具有将具有硅氧烷键的硅酮引入树脂骨架中的结构。 [0015] In a further preferred embodiment of the developing roller of the present invention, the polyurethane resin having a surface coating of the silicone structure is introduced into a resin having a siloxane bond skeleton. 在该情况下,聚氨酯树脂具有这样的结构:将在其两端具有硅氧烷键和羟基或氨基的硅酮引入氨基甲酸酯部分。 In this case, the polyurethane resin has a structure: silicones having a siloxane bond and a hydroxyl group or an amino group introduced into the urethane portion at both ends thereof. 另外,优选的是被引入树脂骨架中的硅酮的数均分子量为500-10000。 Further, the number is preferably silicone resin skeleton introduced average molecular weight of 500-10000.

[0016] 在本发明的显影辊的进一步优选实施方案中,表面涂层的聚氨酯树脂是通过将内酯改性的多元醇与多异氰酸酯交联而形成的丙烯酸氨基甲酸酯树脂(acrylurethane resin)。 [0016] In a further preferred embodiment of the present invention, a developing roller, a urethane resin coating layer surface is formed by the lactone-modified polyol and a polyisocyanate cross-linked acrylic urethane resin (acrylurethane resin) . 在该情况下,该丙烯酸氨基甲酸酯树脂优选具有这样的结构:在其一端具有硅氧烷键和甲基丙烯酰氧基的硅酮被引入丙烯酸部分。 In this case, the acrylic urethane resin preferably has a structure: having a siloxane bond and a methacryloxy group is introduced into the silicone acrylate portion at one end thereof. 进一步地,该丙烯酸氨基甲酸酯树脂优选具有内酯改性的多元醇被引入氨基甲酸酯部分的结构。 Further, the acrylic urethane resin preferably has a lactone-modified polyol is introduced into carbamate part of the configuration.

[0017] 在本发明的显影辊的进一步优选实施方案中,表面涂层含有5-35质量份炭黑/100质量份内酯改性的多元醇。 [0017] In a further preferred embodiment of the developing roller of the present invention, the surface coating contains 5-35 parts by mass of carbon black / 100 parts by mass of a lactone-modified polyol.

[0018] 在本发明的显影辊的进一步优选实施方案中,表面涂层进一步含有导电剂。 [0018] In a further preferred embodiment of the developing roller of the present invention, the surface coating layer further contain a conductive agent.

[0019] 在本发明的显影辊的进一步优选实施方案中,弹性层由通过采用机械搅拌使氨基甲酸酯起始原料发泡而获得的聚氨酯泡沫制成。 [0019] In a further preferred embodiment of the present invention, the developing roller, the elastic layer made of polyurethane foam by allowing urethane foam starting materials obtained by mechanical stirring. 在该情况下,组成弹性层的聚氨酯泡沫具有闭孔。 In this case, the elastic layer composed of polyurethane foam having a closed cell.

[0020] 在本发明的显影辊的进一步优选实施方案中,在作为弹性层的聚氨酯泡沫与表面涂层之间形成由聚合物和含水溶剂的混合溶液制成的中间涂层。 [0020] In a further preferred embodiment of the developing roller of the present invention, an intermediate coating made of a mixed aqueous solution of the polymer and the solvent in the coating between the polyurethane foam and a surface of the elastic layer. [0021] 在本发明的显影辊的进一步优选实施方案中,该中间涂层由丙烯酸树脂、聚氨酯树脂或橡胶胶乳制成。 [0021] In a further preferred embodiment of the developing roller of the present invention, the intermediate coating layer of an acrylic resin, urethane resin, or made of rubber latex.

[0022] 在本发明的显影辊的进一步优选实施方案中,该中间涂层的玻璃转化温度不高于10°C。 [0022] In a further preferred embodiment of the developing roller of the present invention, the intermediate coating layer glass transition temperature no greater than 10 ° C.

[0023] 在本发明的显影辊的进一步优选实施方案中,该中间涂层由两层或多层组成。 [0023] In a further preferred embodiment of the developing roller of the present invention, the intermediate coating layer composed of two or more layers.

[0024] 在本发明的显影辊的进一步优选实施方案中,该中间涂层进一步含有导电剂。 [0024] In a further preferred embodiment of the developing roller of the present invention, the intermediate coating layer further contain a conductive agent.

[0025] 在本发明的显影辊的进一步优选实施方案中,中间涂层和表面涂层的总厚度不超过100 μ m0 [0025] In a further preferred embodiment of the developing roller of the present invention, the total thickness of the intermediate coat and the top coat layer is not more than 100 μ m0

[0026] 在本发明的显影辊的进一步优选实施方案中,该辊的10点平均表面粗糙度(Rz) 不超过10 μ m。 [0026] In a further preferred embodiment of the developing roller of the present invention, the roller surface 10-point average roughness (Rz) of not more than 10 μ m.

[0027] 另外,根据本发明的成像装置的特征在于包括上述的显影辊。 [0027] Further, according to the characteristics of the image forming apparatus according to the present invention includes the above developing roller.

[0028] 根据本发明,通过将借助于使内酯改性的多元醇与多异氰酸酯交联形成的聚氨酯树脂用作表面涂层,可以提供一种在高温、高湿环境下长时间使用中具有低的压缩永久变形以及优良的耐调色剂熔化性而不会污染感光鼓和损坏调色剂的显影辊。 [0028] According to the present invention, the polyurethane resin formed by means of a lactone-modified polyol is a polyisocyanate as crosslinking surface coating may provide a long period of use at high temperature, high-humidity environment having low compression set and excellent resistance to toner fusion without contamination of the photosensitive drum and the toner in the developing roller damage. 还可以提供包括这样的显影辊并且能够稳定地形成优良图像的成像装置。 It may also be provided and include a developing roller forming apparatus capable of forming excellent images stably.

附图说明 BRIEF DESCRIPTION

[0029] 将参照附图来描述本发明,其中: [0029] The present invention is described with reference to the accompanying drawings, wherein:

[0030] 图1是根据本发明的显影辊的一个实施方案的图示剖面图; [0030] FIG. 1 is a cross-sectional view illustrating a developing roller according to an embodiment of the present invention;

[0031] 图2是根据本发明的显影辊的另一实施方案的图示剖面图; [0031] FIG 2 is a diagrammatical cross-sectional view of another embodiment of the developing roller of the present invention;

[0032] 图3是在根据本发明的成像装置的一个实施方案的剖面中部分示出的示意图。 [0032] FIG. 3 is a cross-sectional schematic view illustrating an embodiment of an image forming apparatus according to the present invention in section.

具体实施方式 Detailed ways

[0033] <显影辊> [0033] <developing roller>

[0034] 下面参照附图详细阐述根据本发明的显影辊。 The developing roller of the present invention in detail in accordance with [0034] reference to the drawings. 图1是根据本发明的显影辊的一个实施方案的图示剖面图。 1 is a diagram of a cross-sectional view of an embodiment of a developing roller according to the present invention. 所示出的显影辊1包括:轴2、形成于轴2外围上的弹性层3,和形成于弹性层3的外围面上的表面涂层4。 The developing roller 1 shown comprises: a shaft 2, is formed on the periphery of the elastic layer 2 on the shaft 3, and a surface coating layer formed on the peripheral surface of the elastic layer 3 4. 在所示出的实施方案中,表面涂层4由一层组成, 但是在根据本发明的显影辊中的表面涂层4可以由两层或多层组成。 In the illustrated embodiment, the surface coating layer composed of 4, 4 but may be formed from two or more layers according to the present invention in the developing roller surface coatings. 在根据本发明的显影辊中,将表面涂层4布置于弹性层3的外围上,所以可以充分地防止由于从弹性层3中浸出的污染物质将感光鼓污染。 In the developing roller according to the present invention, the surface coating layer 4 is disposed on the periphery of the elastic layer 3 can be sufficiently prevented from leaching of contaminants in the elastic layer 3 of the photosensitive drum contamination.

[0035] 本发明的显影辊中的轴2没有特别限制,但可以包括例如,金属如铁、不锈钢、铝或其类似物的实心,金属的中空圆筒形轴,优良导电塑料的轴等等。 [0035] The developing roller according to the present invention the shaft 2 is not particularly limited, but may include, for example, metals such as iron, stainless steel, aluminum or the like solid, hollow cylindrical shaft of metal, like high conductive plastic shaft .

[0036] 本发明的显影辊中的弹性层3由弹性体制成,并且如果必要,则可以含有其他的组分例如导电剂等。 Other components such as a conductive agent [0036] The present invention is an elastic layer of the developing roller 3 is made of an elastomer, and, if necessary, may be contained. 作为用于弹性层3中的弹性体,提及聚氨酯、硅橡胶、乙烯-丙烯-二烯橡胶(EPDM)、丙烯腈-丁二烯橡胶(NBR)、天然橡胶、苯乙烯-丁二烯橡胶(SBR)、丁二烯橡胶、异戊二烯橡胶、聚降冰片烯橡胶、丁基橡胶、氯丁二烯橡胶、丙烯酸橡胶、表氯醇橡胶(ECO)、乙烯-乙酸乙烯酯共聚物(EVA)、其混合物等。 The elastomer used in the elastic layer 3 mentioned polyurethane, silicone rubber, ethylene - propylene - diene rubber (EPDM), acrylonitrile - butadiene rubber (NBR), natural rubber, styrene - butadiene rubber (SBR), butadiene rubber, isoprene rubber, polynorbornene rubber, butyl rubber, chloroprene rubber, acrylic rubber, epichlorohydrin rubber (the ECO), ethylene - vinyl acetate copolymer ( EVA), mixtures thereof and the like. 在它们当中,优选聚氨酯。 Among them, preferably polyurethane. 可以将弹性体的非发泡体用作弹性层3,但优选通过用发泡剂使弹性体化学发泡或者通过如同聚氨酯泡沫中那样将空气机械吹入等而使用弹性体的发泡体。 Non-foam elastomers may be used as the elastic layer 3, but preferably by using a foaming agent or a chemical foaming elastomer like a polyurethane foam as by air blown into the mechanical foam is used like elastic body. 当弹性层3由发泡体制成时,优选膨胀比在1. 1-30倍的范围,并且密度在0. 05-0. 9g/cm3的范围内。 3 when the elastic layer is made of foam, the expansion ratio is preferably in the range of 1 to 30 times, and in the range of 0. 05-0. 9g / cm3 of density.

[0037] 特别地,优选在弹性层3中使用通过采用机械搅拌使氨基甲酸酯原料发泡而获得的聚氨酯泡沫或者通过机械起泡方法获得的聚氨酯泡沫。 [0037] In particular, it is preferable to use a polyurethane foam by mechanical agitation foaming urethane raw material obtained in the elastic layer of polyurethane foam 3 or obtained by the mechanical frothing method. 通过其中在不使用发泡剂的条件下将氨基甲酸酯原料机械搅拌以将气泡掺入其中的方法来制造聚氨酯泡沫。 Wherein by using a foaming agent without mechanical stirring of the urethane material in which the method of producing gas bubbles incorporated into a polyurethane foam. 作为氨基甲酸酯原料,提及的是多元醇和多异氰酸酯或者由多元醇和多异氰酸酯合成的氨基甲酸酯预聚物,并且可以进一步将扩链剂和催化剂、发泡稳定剂、导电剂等加入到氨基甲酸酯原料中。 As a urethane material, it is mentioned polyol and a polyisocyanate or a polyol and a polyisocyanate urethane prepolymer synthesis, and may further be a chain extender and a catalyst, a foam stabilizer, a conductive agent added the urethane raw material. 而且,聚氨酯泡沫中的气泡主要是闭孔,并且可以通过吹入空气的方法而适宜地调节膨胀比和密度。 Further, the polyurethane foam bubbles mainly closed cells, and may be suitably adjusted by the expansion ratio and the method of blowing air density.

[0038] 作为可用作聚氨酯泡沫的原料的多元醇,提及聚酯型多元醇、聚醚型多元醇、聚丁二醇、聚丁二烯多元醇、环氧丙烷(PO)改性的聚丁二烯多元醇、聚异戊二烯多元醇等。 [0038] may be used as a starting material polyurethane foam polyols, polyester polyols mentioned, polyether polyol, polytetramethylene glycol, polybutadiene polyol, propylene oxide (PO) modified polybutadiene polyol, polyisoprene polyol and so on. 此夕卜,聚酯型多元醇由多元醇例如乙二醇、二甘醇、1,4- 丁二醇、1,6-己二醇、丙二醇、三羟甲基乙烷、三羟甲基丙烷等和多元羧酸例如己二酸、戊二酸、丁二酸、癸二酸、庚二酸、辛二酸等获得。 This evening Bu, polyester polyol from a polyol such as ethylene glycol, diethylene glycol, 1,4-butanediol, 1,6-hexanediol, propylene glycol, trimethylol ethane, trimethylol propane, and polycarboxylic acids such as adipic acid, glutaric acid, succinic acid, sebacic acid, pimelic acid, suberic acid, etc. is obtained. 另外,通过将环氧烷烃例如环氧乙烷、环氧丙烷等加入到多元醇例如乙二醇、丙二醇、甘油等中而得到聚醚多元醇。 Further, the alkylene oxide by ethylene oxide, propylene oxide is added to the polyhydric alcohol such as ethylene glycol, propylene glycol, glycerol, etc. obtained, for example polyether polyols.

[0039] 作为可用作聚氨酯泡沫的原料的多异氰酸酯,提及甲苯二异氰酸酯(TDI)、二苯基甲烷二异氰酸酯(MDI)、粗制的二苯基甲烷二异氰酸酯(粗制MDI)、异佛尔酮二异氰酸酯(IPDI)、氢化的二苯基甲烷二异氰酸酯、氢化的甲苯二异氰酸酯、1,6_己二异氰酸酯(HDI),和其异氰脲酸酯改性产品、碳二亚胺改性产品或二醇改性产品。 [0039] As the polyisocyanate starting material may be used as a polyurethane foam, mentioned tolylene diisocyanate (TDI), diphenylmethane diphenylmethane diisocyanate (MDI), crude diisocyanate (crude MDI), iso isophorone diisocyanate (IPDI), diphenylmethane diisocyanate hydrogenated tolylene diisocyanate hydrogenated 1,6_ hexamethylene diisocyanate (HDI), and their isocyanurate modified products, carbodiimide glycol modified products or modified products. 优选适宜地选择所使用的多异氰酸酯的量,以使得多异氰酸酯的异氰酸酯基团(NCO)与多元醇的羟基(OH)的比值(NC0/0H)范围为95/100-110/100。 Preferably appropriately selected polyisocyanate used esters in an amount such that the polyisocyanate is an isocyanate group (NCO) a ratio of hydroxyl (OH) polyol and (NC0 / 0H) in the range of 95 / 100-110 / 100.

[0040] 可以通过一步法将多异氰酸酯与多元醇反应,或者可以将其预先与多元醇反应以形成氨基甲酸酯预聚物,然后可以在催化剂的存在下将其与扩链剂等反应。 [0040] The one-step process by the reaction of polyisocyanate with a polyol, or may be pre-reacted with the polyol to form a urethane prepolymer, which may then be reacted with a chain extender or the like in the presence of a catalyst. 此外,合成的氨基甲酸酯预聚物中的NCO基团的含量优选在3-30质量%的范围,更优选在5-15质量% 的范围,并且优选适宜地选择在氨基甲酸酯预聚物的合成中使用的多异氰酸酯和多元醇的量,以使得氨基甲酸酯预聚物中的NCO基团的含量处于以上范围内。 Further, the content of the synthesis of the urethane prepolymer NCO groups is preferably in the range of 3-30% by mass, and more preferably in the range of 5-15% by mass, and preferably suitably selected urethane pre the amount of polyisocyanate and polyol used in the synthesis of oligomers, such that the content of the urethane prepolymer NCO groups is in the above range. 另外,扩链剂是将氨基甲酸酯预聚物彼此相连的化合物,包括乙二醇、丙二醇、丁二醇、戊二醇、己二醇、辛二醇、三羟甲基丙烷、聚醚型多元醇、聚丁二醇、聚丁二烯多元醇、聚异戊二烯多元醇等。 Further, the chain extender compound is a urethane prepolymer connected to one another, include ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, octanediol, trimethylolpropane, polyether polyols, polytetramethylene glycol, polybutadiene polyol, polyisoprene polyol and so on. 优选适宜地选择所使用的扩链剂的量,以使得氨基甲酸酯预聚物中的异氰酸酯基团(NCO)与扩链剂中的羟基(OH)的比值(NC0/0H)范围为95/100-110/100。 The amount of chain extender used is preferably appropriately selected, so that the urethane prepolymer is an isocyanate group (NCO) ratio (NC0 / 0H) hydroxyl (OH) a chain extender in the range of 95 / 100-110 / 100.

[0041] 可用作聚氨酯泡沫的原料的催化剂是用于氨基甲酸酯形成反应的催化剂,包括: 有机锡化合物例如月桂酸二丁基锡、二乙酸二丁基锡、硫代羧酸二丁基锡、二马来酸二丁基锡、硫代羧酸二辛基锡、辛烯酸(octentate)锡等;有机铅化合物例如辛烯酸铅等;单胺例如三乙胺、二甲基环己胺等;二胺例如四甲基乙二胺、四甲基丙二胺、四甲基己二胺等•'三胺例如五甲基二亚乙基三胺、五甲基二亚丙基三胺、四甲基胍等;环胺例如三亚乙基二胺、 二甲基哌嗪、甲基乙基哌嗪、甲基吗啉、二甲基氨乙基吗啉、二甲基咪唑等;醇胺例如二甲基氨基乙醇、二甲基氨基乙氧基乙醇、三甲基氨基乙基乙醇胺、甲基羟乙基哌嗪、羟乙基吗啉等;醚胺例如双(二甲基氨乙基)醚、乙二醇双(二甲基)氨丙基醚等,等等。 [0041] The catalyst may be used as a raw material for polyurethane foam is a urethane-forming reaction catalyst, comprising: organotin compounds such as dibutyltin laurate, dibutyltin diacetate, dibutyltin thiocarboxylate, dibutyltin dimaleate dibutyltin, dioctyltin thiocarboxylate, suberic acid (octentate) tin and the like; organic lead compounds such as lead suberic acid; monoamines such as triethylamine, dimethyl cyclohexylamine; diamines such as tetramethyl ethylenediamine, tetramethyl propanediamine, tetramethyl hexanediamine and the like • 'e.g. triamine pentamethyl diethylene triamine, pentamethyl dipropylenetriamine, triethylenetetramine, tetramethylguanidine and the like; cyclic amines such as triethylenediamine, dimethyl piperazine, methyl ethyl piperazine, methyl morpholine, dimethyl aminoethyl morpholine, dimethyl imidazole and the like; alcohol amines such as dimethylaminoethanol , dimethylaminoethoxy ethanol, trimethylaminoethyl ethanolamine, methyl hydroxyethyl piperazine, hydroxyethyl morpholine and the like; ether amines such as bis (dimethylaminoethyl) ether, ethylene glycol bis (dimethyl) aminopropyl ether and the like, and the like. 在它们当中, 优选有机锡化合物。 Among them, preferred are organic tin compounds. 这些催化剂可以单独或者以两种或多种的组合使用。 These catalysts may be used alone or in combination of two or more thereof. 所使用的催化剂的量优选基于每100质量份多元醇或氨基甲酸酯预聚物在0. 001-2. 0质量份范围内。 The amount of catalyst to be used is preferably 100 parts per mass of the polyol in the urethane prepolymer or 0. 001-2. 0 parts by mass. [0042] 除了硅酮基的发泡稳定剂例如聚醚改性的硅油等之外,可用作聚氨酯泡沫的原料的发泡稳定剂还可以包括阴离子表面活性剂、非离子表面活性剂等。 [0042] In addition to silicone-based foam stabilizer other than the polyether-modified silicone oil, for example, can be used as a raw material of polyurethane foam comprising a foam stabilizing agent may further anionic surfactants, nonionic surfactants and the like. 所使用的发泡稳定剂的量优选为基于100质量份多元醇或者氨基甲酸酯预聚物在0. 5-5质量份的范围内。 The amount of the foam stabilizer used is preferably based on 100 parts by mass of the polyol in the urethane prepolymer or 0. 5-5 parts by mass.

[0043] 可用于弹性层3中的导电剂包括电子导电剂、离子导电剂等。 [0043] The conductive agent may be used in the elastic layer 3 comprises an electronic conductive agent, ion conductive agent. 作为电子导电剂, 提及导电炭黑,例如Ket jenblack、乙炔黑等;SAF、ISAF, HAF, FEF、GPF、SRF、FT、MT等橡胶炭黑;进行氧化处理的用于着色的炭黑、热分解的炭黑、天然石墨、人造石墨、锑掺杂的氧化锡、ITO ;金属氧化物例如氧化锡、氧化钛、氧化锌等;金属例如镍、铜、银、锗等;导电聚合物例如聚苯胺、聚吡咯、聚乙炔等;导电晶须例如碳晶须、石墨晶须、碳化钛晶须、导电钛酸钾晶须、导电钛酸钡晶须、导电氧化钛晶须、导电氧化锌晶须等;等等。 As the electron conductive agent are mentioned conductive carbon black, e.g. Ket jenblack, acetylene black; SAF, ISAF, HAF, FEF, GPF, SRF, FT, MT carbon black and other rubber; oxidation treatment of carbon black for coloring, thermal decomposition of carbon black, natural graphite, artificial graphite, antimony-doped tin oxide, the ITO; metal oxides such as tin oxide, titanium oxide, zinc oxide and the like; metals such as nickel, copper, silver, germanium and the like; a conductive polymer e.g. polyaniline, polypyrrole, polyacetylene and the like; conductive fibers such as carbon whisker, graphite whisker, titanium carbide whisker, conductive potassium titanate whisker, conductive barium titanate whisker, conductive titanium oxide whisker, conductive zinc oxide whiskers; and so on. 混合的电子导电剂的量优选基于每100质量份弹性体为1-50质量份,更优选为5-40质量份。 The mixing amount of the electronically conductive agent is preferably per 100 parts by mass of the elastomer 1 to 50 parts by mass, more preferably 5-40 parts by mass.

[0044] 作为离子导电剂,提及的是:四乙铵、四丁铵、十二烷基三甲铵、十六烷基三甲铵、 苄基三甲铵、改性的脂肪酸二甲基乙铵等的高氯酸盐、氯酸盐、盐酸盐、溴酸盐、碘酸盐、氟硼酸盐、硫酸盐、乙基硫酸盐、羧酸盐、磺酸盐等;碱金属或碱土金属例如锂、钠、钾、钙、镁等的高氯酸盐、氯酸盐、盐酸盐、溴酸盐、碘酸盐、氟硼酸盐、硫酸盐、三氟甲基硫酸盐、磺酸盐等。 [0044] As the ion conductive agent are mentioned are: tetraethylammonium, tetrabutyl ammonium, dodecyl trimethyl ammonium, cetyltrimethyl ammonium, benzyl trimethyl ammonium, modified fatty acid dimethyl ethyl ammonium perchlorates, chlorates, hydrochlorides, bromates, iodates, fluoroboric acid salts, sulfate, ethylsulfate, carboxylate, sulfonate and the like; alkali metals or alkaline earth metals e.g. lithium, sodium, potassium, calcium, magnesium and the like perchlorates, chlorates, hydrochlorides, bromates, iodates, fluoroboric acid salts, sulfate, trifluoromethyl sulfate, sulfonate Wait. 配混的离子导电剂的量优选基于每100质量份弹性体为0. 01-10质量份,更优选为0. 05-5质量份。 Compounded amount of the ion conductive agent is preferably per 100 parts by mass of the elastomer 0. 01-10 parts by mass, more preferably 0. 05-5 parts by mass. 这些导电剂可以单独或以两种或多种的组合,或者以电子导电剂和离子导电剂的组合使用。 These conductive agents may be used alone or in combination of two or more thereof, or in a combination of an electronic conductive agent and ionic conductive agent.

[0045] 通过配混导电剂,弹性层3优选具有IO3-IOki Ω cm,优选IO4-IO8 Ω cm的电阻值。 [0045] By compounding a conductive agent, the elastic layer 3 preferably has a IO3-IOki Ω cm, the resistance value is preferably the IO4-IO8 Ω cm. 当弹性层3的电阻值小于IO3Qcm时,电荷可能泄漏到感光鼓等上或者显影辊本身可能被电压损坏,而当其超过101° Ω cm时,容易造成起雾。 When the resistance value of the elastic layer 3 is less than IO3Qcm, charge may leak to the developing roller or the voltage itself may be damaged photosensitive drum or the like, while when it exceeds 101 ° Ω cm, likely to cause fogging.

[0046] 出于将弹性体变成橡胶状物质的目的,如果必要,弹性层3可以含有交联剂例如有机过氧化物等和硫化剂例如硫等,并且可以进一步含有硫化助剂、硫化促进剂、促进剂活化剂、防焦剂等。 [0046] For the purposes of the elastomer into a rubber-like material, if necessary, the elastic layer 3 may contain a crosslinking agent such as organic peroxide vulcanizing agents such as sulfur and the like, and may further contain a vulcanization aid, a vulcanization accelerator agent, accelerator activators, retarders and the like. 同样,弹性层3可以包含用于橡胶的配混组分,例如填料、塑解剂、起泡剂、 增塑剂、软化剂、增粘剂、防粘剂、脱模剂、膨胀剂、着色剂等。 Also, the elastic layer 3 may comprise a ligand for rubber compounding ingredients such as fillers, peptizing agents, foaming agents, plasticizers, softeners, tackifiers, antiblocking agents, release agents, extenders, coloring agent.

[0047] 在根据本发明的显影辊中,表面涂层4的特征在于包含通过将内酯改性的多元醇与多异氰酸酯交联而形成的聚氨酯树脂。 [0047] In the resin comprising a polyurethane formed by the lactone-modified polyol and a polyisocyanate crosslinking developing roller according to the present invention, characterized in that the surface coating 4. 由于表面涂层4包含上述的聚氨酯树脂,因此降低了显影辊的硬度以使得不会损坏调色剂,并且可以进一步降低压缩永久变形以形成优良图像。 Since the surface of the coating 4 containing the urethane resin, thus reducing the hardness of the developing roller so as not to damage the toner, and may further reduce the compression set to form an excellent image.

[0048] 本发明的显影辊的表面涂层4主要包含通过将内酯改性的多元醇与多异氰酸酯交联而形成的聚氨酯树脂,并且如果必要,则可以包含其他的组分例如导电剂等。 [0048] The surface coating of the developing roller 4 of the present invention mainly comprises a polyurethane resin formed by the lactone-modified polyol and a polyisocyanate cross-linking, and, if necessary, may contain other components such as a conductive agent . 内酯改性的多元醇可以通过用内酯例如ε -己内酯等将多元醇的末端改性而制得,并且也可以使用可商购的一类。 Lactone-modified polyol can be obtained by a lactone for example ε - caprolactone terminal-modified polyhydric alcohol is prepared, and may also be used a commercially available type. 在本发明中,内酯改性的多元醇优选具有数均分子量(Mn) 1000-5000,其为通过凝胶渗透色谱测量的换算成聚苯乙烯的数均分子量,和由通过凝胶渗透色谱测量的换算成聚苯乙烯的重均分子量(Mw)与数均分子量(Mn)的比值表示的分子量分布(Mw/Mn) 不超过2. 5。 In the present invention, a lactone-modified polyols preferably have a number-average molecular weight (Mn) 1000-5000, which is the number of gel permeation chromatography in terms of polystyrene measured by average molecular weight, determined by gel permeation chromatography, and a molecular weight distribution measured in terms of polystyrene-average molecular weight (Mw) to number average molecular weight (Mn) represented by a ratio (Mw / Mn) is not more than 2.5. 当内酯改性的多元醇的数均分子量(Mn)小于1000时,在高温、高湿度环境下长时间使用中,显影辊的硬度增加并且可能造成耐调色剂熔化性劣化的担心,而当其超过5000时,交联度降低并且可能造成增加压缩永久变形的担心。 When the lactone-modified polyol has a number average molecular weight (Mn) less than 1,000, used for a long time at a high temperature, high humidity environment, the hardness of the developing roller and may cause a fear of melting increases resistance of the toner deteriorates, and when it exceeds 5000, the degree of crosslinking decreases and may cause an increase in compression set fear of deformation. 另外,当分子量分布(Mw/Mn) 超过2. 5时,压缩永久变形增加、耐调色剂熔化性劣化并且容易造成起雾。 Further, when the molecular weight distribution (Mw / Mn) more than 2.5, the increase in compression set, resistance to deterioration and toner fusion likely to cause fogging. 从同时建立低的压缩永久变形和优良的耐调色剂熔化性的观点出发,内酯改性的多元醇的数均分子量(Mn)优选为1000-3000,并且分子量分布(Mw/Mn)优选不超过2. 0。 Establish a low compression set and excellent in view of resistance of the toner melt from the same time, lactone-modified polyol has a number average molecular weight (Mn) is preferably from 1000 to 3000, and a molecular weight distribution (Mw / Mn) is preferably not more than 2.0. 此外,内酯改性的多元醇优选具有不小于500,优选不小于1000的重均分子量(Mw)。 Further, a lactone-modified polyol is preferably not less than 500, preferably not less than 1000 weight average molecular weight (Mw).

[0049] 作为将要用内酯改性的多元醇,提及:通过烯化氧例如环氧乙烷、环氧丙烷等与甘油等的加成聚合获得的聚醚型多元醇、聚丁二醇、甘油、乙二醇、丙二醇、丁二醇、戊二醇、己二醇、辛二醇、聚丁二烯多元醇、聚异戊二烯多元醇、聚酯型多元醇等。 [0049] As use lactone-modified polyhydric alcohols are mentioned: an alkylene oxide polyether polyol, for example, ethylene oxide, propylene oxide addition polymerization of glycerin and the like obtained, polytetramethylene glycol , glycerol, propylene glycol, butanediol, pentanediol, hexanediol, octanediol, polybutadiene polyol, polyisoprene polyol, polyester polyol and the like.

[0050] 作为将内酯改性的多元醇交联的多异氰酸酯,提及:甲苯二异氰酸酯(TDI)、二苯基甲烷二异氰酸酯(MDI)、粗制的二苯基甲烷二异氰酸酯(粗制MDI)、异佛尔酮二异氰酸酯(IPDI)、氢化的二苯基甲烷二异氰酸酯、氢化的甲苯二异氰酸酯、1,6_己二异氰酸酯(HDI)、异氰脲酸酯改性的1,6_己二异氰酸酯等。 [0050] As a lactone-modified polyisocyanate polyol crosslinking are mentioned: toluene diisocyanate (TDI), diphenylmethane diphenylmethane diisocyanate (MDI), crude diisocyanate (crude MDI), isophorone diisocyanate (IPDI), diphenylmethane diisocyanate, hydrogenated toluene diisocyanate, 1,6_ hexamethylene diisocyanate (HDI), isocyanurate-modified 1,6 _ hexamethylene diisocyanate. 这些多异氰酸酯可以单独使用,但优选使用两种或多种多异氰酸酯的组合。 These polyisocyanates may be used alone, it is preferable to use a combination of two or more of the polyisocyanates. 此外,从在表面涂层中同时建立低的硬度和低的压缩永久变形的观点出发,优选的是用于本发明的多异氰酸酯包含异氰脲酸酯改性的1,6_己二异氰酸酯和异佛尔酮二异氰酸酯的至少一种。 Further, from the establishment of low hardness and low permanent compression deformation of view while the surface coating, it is preferable that the polyisocyanates for the present invention comprises a heterologous 1,6_ hexamethylene diisocyanate and isocyanurate-modified at least one of isophorone diisocyanate.

[0051] 表面涂层4可以进一步包含用于促进内酯改性的多元醇与多异氰酸酯之间的交联反应的催化剂。 [0051] The surface coating layer 4 may further comprise a catalyst of the crosslinking reaction between the polyol and the polyisocyanate used to promote lactone-modified. 作为催化剂,可以提及:有机锡化合物例如二月桂酸二丁基锡、二乙酸二丁基锡、硫代羧酸二丁基锡、二马来酸二丁基锡、羧酸二辛基锡、辛酸锡等;有机铅化合物例如辛酸铅等;单胺例如三乙胺、二甲基环己胺等;二胺例如四甲基乙二胺、四甲基丙二胺、 四甲基己二胺等;三胺例如五甲基二亚乙基三胺、五甲基二亚丙基三胺、四甲基胍等;环胺例如三亚乙基二胺、二甲基哌嗪、甲基吗啉、二甲基氨乙基吗啉、二甲基咪唑等;醇胺例如二甲基氨基乙醇、二甲基氨基乙氧基乙醇、三甲基氨基乙基乙醇胺、甲基羟乙基哌嗪、羟乙基吗啉等;醚胺例如双(二甲基氨乙基)醚、乙二醇双(二甲基)氨丙基醚等,等等。 As the catalyst, there may be mentioned: organotin compounds such as dibutyl tin dilaurate, dibutyl tin diacetate, dibutyltin thiocarboxylate, dibutyltin dimaleate, dioctyl tin carboxylate, tin octylate and the like; organic compounds such as lead octylate lead; monoamines such as triethylamine, dimethyl cyclohexylamine; diamines such as tetramethyl ethylenediamine, tetramethyl propanediamine, tetramethyl hexanediamine and the like; triamine pentamethyl e.g. triamine, pentamethyl dipropylenetriamine, triethylenetetramine, tetramethylguanidine and the like; cyclic amines such as triethylenediamine, dimethyl piperazine, methyl morpholine, dimethyl aminoethyl morpholine , dimethyl imidazole and the like; alcohol amines such as dimethylaminoethanol, dimethylaminoethoxy ethanol, trimethylaminoethyl ethanolamine, methyl hydroxyethyl piperazine, hydroxyethyl morpholine and the like; ether amine such as bis (dimethylaminoethyl) ether, ethylene glycol bis (dimethyl) aminopropyl ether and the like, and the like. 在这些催化剂当中,优选有机锡化合物。 Among these catalysts, preferably organotin compounds. 这些催化剂可以单独或者以两种或者多种的组合使用。 These catalysts may be used alone or in combination of two or more thereof. 使用的催化剂的量优选基于每100质量份内酯改性的多元醇在0. 001-2. 0质量份的范围内。 The amount of catalyst is preferably used per 100 parts by mass of a lactone-modified polyol in 0. 001-2. 0 parts by mass.

[0052] 在本发明中,从防止感光器在高温和高湿度条件下免于污染的观点出发,优选的是异氰酸酯化合物的异氰酸酯基团(NCO)与内酯改性的多元醇的羟基(OH)的摩尔比([NCO]/[OH])为1. 0-2. 5,更优选1. 2-2. 0。 [0052] In the present invention, preventing the photoreceptor from contamination at high temperature and high humidity conditions viewpoint, preferred are hydroxyl polyol isocyanate groups of isocyanate compound (NCO) and the lactone-modified (OH the molar ratio ([NCO] / [OH])) is 1. 0 to 2. 5, more preferably 1. 2-2. 0.

[0053] 出于控制导电性的目的,可以将表面涂层4与导电剂配合。 [0053] For the purposes of controlling conductivity, the surface coating layer 4 may be fitted with a conductive agent. 作为导电剂,可以提及与弹性层3中所使用的相同的导电剂。 As the conductive agent, mention may be made of the same conductive agent used for the elastic layer 3. 在离子导电剂的情况下,混合在表面涂层4中的导电剂的量优选基于100质量份组成表面涂层4的聚氨酯树脂,不超过20质量份,更优选0. 01-20质量份,进一步优选1-10质量份,并且在电子导电剂的情况下优选基于每100质量份组成表面涂层4的聚氨酯树脂为1-70质量份,更优选5-50质量份。 In the case where the ion conductive agent, based on 100 parts by mass of the mixed composition of the surface coating layer 4 is preferably electrically conductive surface coating agent is a polyurethane resin 4, not more than 20 parts by mass, more preferably 0. 01-20 parts by mass, more preferably 1 to 10 parts by mass, based on polyurethane resin and preferably per 100 parts by mass of the surface coating layer 4 is composed of 1-70 parts by mass in the case of an electronic conductive agent, and more preferably 5-50 parts by mass. 在本发明中,从在各种环境下导电性的稳定性的观点出发将炭黑用作导电剂,其中混合的炭黑的量优选基于每100质量份内酯改性的多元醇为5-35质量份,更优选10-30质量份。 Amount of polyol in the present invention, from the viewpoint of electrical conductivity stability under various environments used as a conductive agent, carbon black, wherein the carbon black is preferably blended per 100 parts by mass of a lactone-modified 5- 35 parts by mass, more preferably 10-30 parts by mass. 在表面涂层4中, 优选通过加入导电剂将体积电阻值调节至IO3-IOkiQ · cm,优选IO4-IO8 Ω · cm的范围。 In the surface coating layer 4, the volume resistivity is preferably adjusted to IO3-IOkiQ · cm by adding a conductive agent, preferably in the range IO4-IO8 Ω · cm is.

[0054] 在本发明中,从使得表面涂层的硬度低以防止损坏调色剂的观点出发,表面涂层4 在25°C下的储能模量优选为3-50MPa,更优选5_40MPa。 [0054] In the present invention, from such a low hardness of the surface of the coating to prevent damage to the toner perspective view, a surface coating layer 4 is preferably a storage modulus at 25 ° C, 3-50MPa, more preferably 5_40MPa.

[0055] 表面涂层4的厚度没有特别限制,但优选不超过30 μ m,更优选1_15 μ m。 Thickness [0055] The surface coating layer 4 is not particularly limited, but preferably not more than 30 μ m, more preferably 1_15 μ m. 当表面涂层4的厚度超过30 μ m时,表面涂层4变得更硬而破坏了柔性,耐久性也劣化而造成开裂并且有这样的担心:调色剂被破坏而造成调色剂附着在感光鼓或成层刮板上,由此造成不良成像。 When the thickness of the surface coating layer 4 exceeds 30 μ m, the surface coating 4 becomes harder and damage the flexibility, durability deterioration and cause cracking there is concern: the damage caused by the toner adhering toner on the photosensitive drum or the stratification blade, thereby causing poor imaging. [0056] 作为用于表面涂层4中的聚氨酯树脂,可以使用丙烯酸氨基甲酸酯树脂。 [0056] As the urethane resin used in the surface coating layer 4, an acrylic urethane resin. 在该情况下,可以将具有硅氧烷键的硅酮引入氨基甲酸酯部分和/或丙烯酸部分。 In this case, silicone having a siloxane bond introduction of urethane portion and / or acrylic acid moiety. 作为被引入到聚氨酯树脂和/或丙烯酸氨基甲酸酯树脂的氨基甲酸酯部分中的硅酮,优选的是在其两端具有硅氧烷键和羟基或氨基的硅酮,作为被引入到丙烯酸氨基甲酸酯树脂的丙烯酸部分中的硅酮,优选的是在其一端具有硅氧烷键和甲基丙烯酰氧基的硅酮。 As silicones having a siloxane bond and a hydroxyl group or an amino group at both ends is introduced into the polyurethane resin and / or urethane moieties acrylic urethane silicone resin, preferably, it is introduced into a acrylic portion of the acrylic urethane silicone resin, preferably a silicone having the siloxane bond and a methacryloyloxy group at one end thereof. 同样,被引入到聚氨酯树脂和/或丙烯酸氨基甲酸酯树脂的树脂骨架中的硅酮优选具有数均分子量(Mn) 500-10, 000。 Similarly, it is introduced into the urethane resin and / or resin skeleton acrylic urethane silicone resin preferably has a number average molecular weight (Mn) 500-10, 000. 此外,在聚氨酯树脂和丙烯酸氨基甲酸酯树脂中具有硅氧烷键的硅酮的含量优选范围为5-40质量%。 Further, the content of silicone preferably in the range of 5 to 40 siloxane bonds in% by mass urethane resin and an acrylic urethane resin. 当硅酮的含量小于5质量%时,降低表面涂层4的摩擦阻力以提高显影辊的滑动性能的作用变小,而当其超过40质量%时,成本变得更高。 When the content of the silicone is less than 5 mass%, the surface coating layer 4 reduce the frictional resistance acting to improve the sliding performance of the developing roller becomes small, while when it exceeds 40 mass%, the cost becomes higher.

[0057] 丙烯酸氨基甲酸酯树脂可以在氨基甲酸酯部分与丙烯酸部分之间具有嵌段型或接枝型的键接,但优选的是将丙烯酸部分作为侧链键合至作为主链的氨基甲酸酯部分上的一类。 [0057] The acrylic urethane type resin may have a block or graft type bonded portion between the urethane and acrylic moieties, it is preferred that the acrylic part as a side chain bonded to the main chain as a class of the carbamate moiety. 可以通过以下方式生产丙烯酸氨基甲酸酯树脂:通过采用(甲基)丙烯酸2-羟丙酯、(甲基)丙烯酸2-羟乙酯等将羟基引入丙烯酸聚合物而形成的聚合物与在其分子末端具有异氰酸酯基团的氨基甲酸酯预聚物反应,或者通过在过氧化物存在下,将在其末端或侧链上具有巯基的氨基甲酸酯预聚物与(甲基)丙烯酸酯进行自由基聚合。 Urethane resin can be produced by the following manner acrylate: formed by using (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxyethyl acrylate or the like introduced into the hydroxy polymer and the acrylic polymer thereof molecular terminal urethane prepolymer having an isocyanate group, or by the presence of peroxide, having a mercapto group at its end or side chain of the urethane prepolymer with (meth) acrylates radical polymerization. 在后一种情况下,巯基通过过氧化物生成自由基,并且(甲基)丙烯酸酯在作为基点的自由基处进行自由基聚合。 In the latter case, the mercapto group through the formation of free radicals of peroxide, and (meth) acrylate, by radical polymerization of the radical as the base point. 在本发明中,通过使用由内酯改性的多元醇、多异氰酸酯和在其两端具有硅氧烷键和羟基或氨基的硅酮合成的氨基甲酸酯预聚物,获得了其中内酯改性的多元醇和具有硅氧烷键的硅酮被引入氨基甲酸酯部分的丙烯酸氨基甲酸酯树脂。 In the present invention, by using a lactone-modified polyol, a polyisocyanate, and a urethane prepolymer having a siloxane bond and a hydroxyl group or an amino group at both ends of the silicone synthesis, wherein the lactone is obtained silicone-modified polyol having a siloxane bond is introduced into the urethane resin, acrylic urethane moieties. 同样,在上述丙烯酸聚合物的合成中通过使用在其一端具有硅氧烷键和甲基丙烯酰氧基的硅酮,获得了具有硅氧烷键的硅酮被引入丙烯酸部分的丙烯酸氨基甲酸酯树脂。 Similarly, in the synthesis of the acrylic polymer having a siloxane bond and a silicone methacryloyloxy group at one end thereof by the use, silicones having a siloxane bond obtained is introduced into the acrylic portion of the acrylic amino acid ester resin. 另一方面,可以例如由内酯改性的多元醇、多异氰酸酯和在其两端具有硅氧烷键和羟基或氨基的硅酮制得聚氨酯树脂。 On the other hand, it may be for example a lactone-modified polyol, a polyisocyanate having a siloxane bond and a hydroxyl group or an amino group at both ends of a polyurethane resin made of silicone. 在根据本发明的显影辊中,可以使用通过除了以上方法之外的方法获得的聚氨酯树脂和/或丙烯酸氨基甲酸酯树脂。 In the developing roller according to the present invention, it may be used a polyurethane resin obtained by the method other than the above method and / or an acrylic urethane resin.

[0058] 作为丙烯酸氨基甲酸酯树脂的丙烯酸组分,提及(甲基)丙烯酸酯例如(甲基) 丙烯酸2-羟丙酯、(甲基)丙烯酸2-羟乙酯、(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、 (甲基)丙烯酸异丁酯、(甲基)丙烯酸正丁酯、(甲基)丙烯酸缩水甘油酯等。 [0058] As the acrylic urethane resin, acrylic component are mentioned (meth) acrylates such as (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, ethyl (meth) acrylate, ethyl (meth) acrylate, isobutyl (meth) acrylate, n-butyl (meth) acrylate and the like. 在丙烯酸氨基甲酸酯树脂中,该树脂中丙烯酸部分的含量优选在5-80质量%的范围,更优选10-60 质量%的范围,进一步优选20-50质量%的范围。 In the acrylic urethane resin, in the range of 5-80% by mass, further preferably 20-50 mass% content of the acrylic portion of the resin is preferred, more preferably 10-60% by mass.

[0059] 形成表面涂层4的方法没有特别限制,但优选采用这样的方法:其中制备包含多种组分的表面涂层4的涂料组合物、通过浸涂法、喷涂法或辊涂法涂布,然后干燥。 [0059] The method of forming a surface coating layer is not particularly limited, but preferably such a method: wherein the plurality of components of a surface coating comprising preparing a coating composition 4 by dip coating, spray coating method or a roll coating method cloth, and then dried.

[0060] 特别地,当弹性层3由聚氨酯泡沫组成时,如果将包含表面涂层4的原料的涂料组合物涂布以形成表面涂层4,则弹性层3可能被涂料组合物中的溶剂溶解或溶胀。 [0060] In particular, when the elastic layer composed of polyurethane foam 3, if the coating composition comprising a surface coating material 4 to form a surface coating 4, it may be 3 solvent coating composition of the elastic layer dissolve or swell. 为了防止弹性层溶解或溶胀,优选在弹性层与表面涂层之间布置中间涂层。 In order to prevent the elastic layer is dissolved or swollen, preferably an intermediate coating disposed between the elastic layer and the surface coating. 在图2中示出了设置有这样的中间涂层的根据本发明的显影辊的一个实施方案的图示剖面图。 In FIG. 2 shows a cross-sectional view illustrating a developing roller according to an embodiment of the present invention is provided with such an intermediate coating. 所示出的显影辊1包括:轴2、形成于轴2外围上的弹性层3、形成于弹性层3外围面上的中间涂层5,和形成于中间涂层5外围面上的表面涂层4。 The developing roller 1 shown comprises: a shaft 2, is formed on the elastic layer 3 on the periphery of the shaft 2, the coating 53 is formed on the peripheral surface of the intermediate elastic layer, and a coating layer 5 formed on the peripheral surface of the intermediate coating surface layer 4. 在所示出的实施方案中,中间涂层5和表面涂层4 的每一种由一层组成,但是在根据本发明的显影辊中的中间涂层5和表面涂层4的每一种可以由两层或多层组成。 In the illustrated embodiment, the intermediate layer 5 and surface coating layer 4 made of each composition, but in each of the intermediate coating according to the present invention, the developing roller 5 and the surface coating 4 It may be composed of two or more layers. 在根据本发明的显影辊中,将中间涂层5和表面涂层4布置于弹性层3的外围上,以使得可以充分地防止由于从弹性层3中浸出的污染物质将感光鼓污染。 In the developing roller according to the present invention, the intermediate layer 5 and the surface coating layer 4 disposed on the outer periphery of the elastic layer 3, so that leaching can be sufficiently prevented from contaminants in the elastic layer 3 of the photosensitive drum contamination. 同样,从不损坏弹性层3的柔性的观点出发,中间涂层5和表面涂层4的总厚度优选不超过100 μ m0 Similarly, never damaged flexible elastic layer 3 perspective viewpoint, the total thickness of the intermediate layer 5 and surface coating layer 4 is preferably not more than 100 μ m0

[0061] 本发明的显影辊中的中间涂层5由聚合物和含水溶剂的混合溶液制成。 An intermediate coating layer of the developing roller 5 [0061] The present invention is made by combining an aqueous solution of the polymer and solvent. 作为聚合物,可以使用树脂和橡胶,只要它们可以溶解或分散于水中即可。 As the polymer, resin and rubber can be used, as long as they can be dissolved or dispersed in water. 此外,中间涂层5优选具有不高于10°C的玻璃转化温度和不超过100 μ m的厚度。 Further, the intermediate layer 5 preferably has a glass transition temperature not higher than 10 ° C and not more than 100 μ m thickness.

[0062] 当用于形成中间涂层5的聚合物是树脂时,可以例如通过制备包含树脂和水的混合溶液、通过浸涂法或喷涂法将混合溶液涂布到弹性层3上,然后干燥来形成该中间涂层5。 [0062] When the polymer for forming the intermediate layer 5 is made of resin, it is possible, for example, by preparing a mixed solution comprising a resin and water, by dipping or spraying the mixed solution onto the elastic layer 3, and then dried 5 to form the intermediate coating layer. 作为用于中间涂层5的树脂,优选的是含水树脂。 As the resin for the intermediate coating 5, preferably aqueous resin. 该含水树脂可以是任何类型例如水溶性类型、乳液类型、悬浮液类型等,并且优选具有活性氢例如羧基、羟基、氨基等的含水树脂。 The aqueous resin may be any type such as water soluble type, emulsion type, suspension type, etc., and preferably having an active hydrogen such as carboxyl, hydroxy, amino and the like aqueous resin. 作为含水树脂,提及可溶于温水的树脂例如丙烯酸树脂、聚氨酯树脂、聚酯树脂、 polydioxorane等。 As the aqueous resin, the resin is dissolved in warm water can be mentioned, for example, an acrylic resin, a polyurethane resin, a polyester resin, polydioxorane like. 在它们当中,优选丙烯酸树脂和聚氨酯树脂。 Among them, preferred are acrylic resins and urethane resins. 丙烯酸树脂没有特别限制,但优选具有不高于10°C的玻璃转化温度。 Acrylic resin is not particularly limited, but preferably has a glass transition temperature of not higher than 10 ° C. 作为丙烯酸树脂,有热塑性类型和交联类型例如自交联的、蜜胺交联的、异氰酸酯交联的等等,但可以使用任何类型,只要它们具有上述范围的玻璃转化温度即可,并且鉴于形成涂布膜的步骤和硬度而优选热塑性类型。 As the acrylic resin, thermoplastic type and a crosslinking type such as self-crosslinking, melamine cross-linked, isocyanate cross-linked, etc., but any type of glass transition temperature as long as they have the above-described range, and in view of and the step of forming a coating film hardness is preferably a thermoplastic type.

[0063] 另一方面,当用于形成中间涂层5的聚合物是橡胶时,可以例如通过以下方式形成中间涂层:通过浸涂法等将橡胶胶乳涂布在弹性层3上,然后用凝固剂将胶乳凝固,或者通过浸涂法等在弹性层3上形成凝固剂的层,然后将橡胶胶乳涂布在其上并且将其凝固, 等等。 [0063] On the other hand, when the polymer for forming the intermediate rubber layer 5, the intermediate coating layer may be formed, for example in the following manner: by dip coating or the like of the rubber latex coated on the elastic layer 3, and then with the latex is coagulated coagulating agent, or coagulant layer is formed on the elastic layer 3 by dip coating method or the like, and then the coated rubber latex and solidifying thereon, and the like. 作为用于中间涂层5的橡胶组分,提及的是苯乙烯-丁二烯共聚物橡胶、天然橡胶等。 As a rubber component for the intermediate layer 5, mentioned are styrene - butadiene copolymer rubber, natural rubber and the like. 在凝固中,优选使用通过将凝固剂例如Kolatex 93 (商品名,由Kawaguchi Kagaku Kogyo Co.,Ltd.生产)等溶解于水或甲醇中形成的酸性溶液。 In coagulation, a coagulant is preferably used, for example, by Kolatex 93 (trade name, manufactured by Kawaguchi Kagaku Kogyo Co., Ltd.) And the like is dissolved in an acidic solution formed in water or methanol. 通过在碱性胶乳与酸性溶液之间引起酸-碱反应而将胶乳胶凝并且凝固。 The latex coagulated and gelled base reaction and - the alkaline latex and pass between the acidic solution to cause the acid. 在由橡胶胶乳形成的中间涂层5中,可以适宜地进行用于除去由酸-碱反应产生的水的干燥步骤或者用于除去由酸-碱反应产生的盐的清洗步骤。 The intermediate coating layer 5 is formed of a rubber latex can suitably be used to remove from the acid - base reaction resulting salt cleaning step of - the step of drying the water produced by the reaction of a base or an acid for removing.

[0064] 可以通过与弹性层3相同的那样加入导电剂来调节中间涂层5的导电性。 [0064] The intermediate coating layer may be adjusted by a conductive elastic layer 5 is the same as adding a conductive agent 3. 在该情况下,加入导电剂以使得中间涂层5的体积电阻率范围为IO3-IOkiQ · cm,优选IO4-IO8Q -Cm0作为被加到中间涂层5的导电剂,可以例举与在组成弹性层3的聚氨酯泡沫的原料中使用的相同导电剂。 In this case, the conductive agent is added so that the range of the volume resistivity of the intermediate layer 5 IO3-IOkiQ · cm, preferably IO4-IO8Q -Cm0 as a conductive agent is applied to the intermediate coating layer 5 may be exemplified in the composition the elastic material of the same conductivity agent layer 3 of polyurethane foam used. 加入中间涂层5的导电剂的量优选基于每100质量份聚合物为0. 1-20质量份,更优选1-10质量份。 A conductive intermediate coating agent is added in an amount of preferably 5 parts by mass of polymer per 100 0. 1-20 parts by mass, more preferably 1 to 10 parts by mass.

[0065] 如果必要,可以将适量的添加剂例如增稠剂、触变剂、结构粘度改性剂等加入到中间涂层5中。 [0065] If necessary, an appropriate amount of additives such as thickeners, thixotropic agents, viscosity modifiers and the like is added to the structure of the intermediate coating layer 5.

[0066] 根据本发明的显影辊优选具有作为10点平均粗糙度(Rz)的表面粗糙度不超过IOym0当显影辊的10点平均粗糙度(Rz)超过10 μ m时,有这样的趋势:调色剂的输送量增加,但调色剂的带电量不足,因此在图像中造成了起雾或分度(graduation)不良。 [0066] with a 10-point average roughness (Rz) of a surface roughness of not more than IOym0 when the developing roller 10-point average roughness (Rz) of the developing roller according to the invention preferably exceeds 10 μ m, there is a tendency that: transport amount of the toner increases, but charge quantity of the toner is insufficient, resulting in image fogging or indexing (graduation) failure.

[0067] 根据本发明的显影辊的电阻值没有特别限制,但用于获得优良图像的电阻优选为IO3-IOiq Ω,更优选IO4-IO8 Ω。 [0067] No resistance value of the developing roller of the present invention is not particularly limited, but for obtaining good resistance of the image is preferably IO3-IOiq Ω, more preferably IO4-IO8 Ω. 当显影辊的电阻值小于IO3 Ω时,相当难以控制分度,并且如果在感光鼓中存在缺陷,则可能造成偏压泄漏(bias leak)。 When the resistance value of the developing roller is less than IO3 Ω, pretty difficult to control indexing, and if there is a defect in the photosensitive drum, it may cause leakage of bias (bias leak). 同时,当电阻值超过101° Ω 时,如果调色剂在感光鼓上显影,则由于显影辊的高电阻而造成显影偏压的电压下降,因此不能确保足以进行显影的显影偏压并且不能获得令人满意的成像浓度。 Meanwhile, when the resistance value exceeds 101 ° Ω, if the toner on the photosensitive drum is developed due to the high resistance of the developing roller and a developing bias voltage drop caused, and therefore can not be secured sufficiently developed and developing bias can not be obtained forming a satisfactory concentration. 此外,当将显影辊的外围表面推送到平的或圆柱形的相对电极上并且在轴与该相对电极之间施加IOOV的电压时,可以由电流值测量电阻值。 Further, when the voltage IOOV upper peripheral surface of the developing roller is pushed to a flat or cylindrical and the counter electrode is applied between the shaft and the opposing electrode, the resistance value can be measured by the current value. 因此,通过适宜地均勻控制显影辊的电阻值,可以充分并且均勻地保持用于使调色剂移动的电场强度。 Thus, by controlling the resistance value of the developing roller uniform suitably can be sufficiently and uniformly maintaining the electric field intensity for moving the toner.

[0068] 根据本发明的显影辊优选具有不超过60°的Asker C硬度。 [0068] having an Asker C hardness of not more than 60 ° of the developing roller of the present invention is preferred. 当将具有Asker C硬度不超过60°的低硬度显影辊组装在成像装置中时,在显影辊、感光鼓、刮板、调色剂进料辊等之间防止了调色剂的损坏,由此可以形成足够优良的图像。 When having an Asker C hardness of not more than 60 ° of a low hardness of the developing roller assembled in the image forming apparatus, between the developing roller, the photosensitive drum, a blade, the toner feed roller or the like to prevent damage to the toner, by the this excellent image can be formed sufficiently.

[0069] <成像装置> [0069] <Image Forming Apparatus>

[0070] 根据本发明的成像装置的特征在于包括上述的显影辊,该显影辊具有低的压缩永久变形而不会使感光鼓污染和调色剂损坏,并且可以稳定地形成优良图像而不会造成不良成像例如起雾等。 [0070] According to a feature of the image forming apparatus according to the present invention includes the above developing roller, the developing roller has a low compression set without causing contamination of the photosensitive drum and the toner is damaged, and excellent image can be stably formed without adverse imaging such as fog and so on. 除了使用上述显影辊之外,该成像装置没有特别限制,并且可以通过非常公知的方法制造。 Except that the developing roller, the image forming apparatus is not particularly limited, and may be manufactured by a very well-known methods.

[0071] 下面将参照附图详细描述根据本发明的成像装置。 [0071] The image forming apparatus according to the present invention is described in detail below with reference to the accompanying drawings. 图3是根据本发明的成像装置的一个实施方案的部分剖面图。 FIG. 3 is a partial cross-sectional view of one embodiment of the image forming apparatus of the present invention. 所示出的成像装置包括:用于供给调色剂6的调色剂进料辊7、保持静电潜像的感光鼓8、设置在调色剂进料辊7与感光鼓8之间的上述显影辊1、设置在显影辊1附近的成层刮板9 (图中的上部)、位于感光鼓8附近的充电辊10 (图中的上部)、位于感光鼓8附近的转印辊11 (图中的下部),和设置在感光鼓8附近的清洁部12。 The image forming apparatus illustrated comprises: means for supplying the toner to the toner feed roller 7 6, holding an electrostatic latent image of the photosensitive drum 8, is disposed above the photosensitive drum 7 and between the toner feed roller 8 the developing roller 1, provided (an upper portion in the drawing) of the developing roller 1 near the stratification blade 9, the photosensitive drum 10 near the charging roller 8 (the upper portion in the figure), a transfer roller 8 is located in the vicinity of the photosensitive drum 11 ( the lower part of the drawing), and a cleaning unit disposed near the photosensitive drum 8 to 12. 此外,根据本发明的成像装置可以进一步设置有通常用于成像装置的公知部件(未示出)。 Further, the image forming apparatus according to the invention may further be provided with a well-known members (not shown) is typically used for image forming apparatus.

[0072] 在所示出的成像装置中,通过充电辊10将感光鼓充电至恒定的电压,此后通过影印机(未示出)在感光鼓8上形成静电潜像。 [0072] In the image forming apparatus shown by the charging roller 10 to the photosensitive drum charged to a constant voltage and thereafter by photolithography (not shown) to form an electrostatic latent image on the photosensitive drum 8. 然后,通过使调色剂进料辊7、显影辊1和感光鼓8以箭头方向旋转,将存在于调色剂进料辊7上的调色剂6通过显影辊1转移至感光鼓8。 Then, the toner feed roller 7, the developing roller and the photosensitive drum 1 rotates in the direction of arrow 8, the toner present in the toner on the feed roller 76 is transferred by the developing roller to the photosensitive drum 1 8. 由成层刮板9将显影辊1上的调色剂6排列成均勻的薄层,然后通过使显影辊1和感光鼓8旋转同时彼此接触而使调色剂6从显影辊1附着到感光鼓8上的静电潜像上,由此显现潜像。 By the stratification blade 9 to the toner on the developing roller 6 are arranged in a uniform thin layer, and then while in contact with the toner from the developing roller 6 is attached to the photoreceptor 1 by the developing roller 1 and the photosensitive drum 8 is rotated to each other the electrostatic latent image on the drum 8, which show the latent image. 通过转印辊11将附着在潜像上的调色剂6转移到记录介质例如纸等上,同时在转印之后,通过清洁部12中的清洁刮板13将保留在感光鼓8上的调色剂6除去。 Transferred to the transfer roller 11 by the toner adhering to the latent image on a recording medium such as paper 6, while after transfer, the cleaning unit 12 by the cleaning blade 13 will remain on the photosensitive drum tone 8 6 to remove the toner. 在根据本发明的成像装置中,通过将根据本发明的、具有低的压缩永久变形而不会使感光鼓污染和调色剂损坏的显影辊用作显影辊1,可以稳定地形成优良的图像。 In the image forming apparatus according to the present invention, by the low compression set according to the present invention, having a photosensitive drum without causing damage to the toner and contamination of the developing roller as the developing roller 1 can be stably form an excellent image .

[0073] 给出以下实施例以解释本发明,而不用于限制本发明。 [0073] The following examples are given to explain the present invention and are not intended to limit the present invention.

[0074](辊体的制备) [0074] (Preparation of the roller body)

[0075] 通过将100质量份由甲苯二异氰酸酯(TDI)和聚醚多元醇合成的氨基甲酸酯预聚物与2质量份乙炔黑混合而制备其中分散有乙炔黑的氨基甲酸酯预聚物作为组分A。 [0075] 100 parts by mass of synthetic tolylene diisocyanate (TDI) and polyether polyol urethane prepolymer with 2 parts by mass of acetylene black which is prepared by mixing acetylene black dispersed urethane prepolymer as component A. 另一方面,将30质量份聚醚多元醇和0. 1质量份高氯酸钠(NaClO4)混合同时在70°C下加热,并且将其进一步与4. 5质量份聚醚改性的硅油(发泡稳定剂)和0. 2质量份二月桂酸二丁基锡(催化剂)混合以形成混合物作为组分B。 On the other hand, 30 parts by mass of the polyether polyol and 0.1 parts by mass of sodium perchlorate (NaClO4) mixing while heating at 70 ° C, and further with 4.5 parts by mass of polyether-modified silicone oil ( foam stabilizer) and 0.2 parts by mass of dibutyltin dilaurate (catalyst) to form a mixture as component B. 随后,通过机械起泡方法将组分A和组分B发泡并且将其倒入其中放置芯的圆筒形模具中,然后进行RIM成型以制得包含由聚氨酯泡沫制成的弹性层的辊体。 Subsequently, by a mechanical foaming method foaming component A and component B and poured into a cylindrical mold which is placed in the die, and then molded to produce a RIM comprising an elastic layer made of urethane foam roller body.

[0076](实施例1) [0076] (Example 1)

[0077] 通过将100质量份己内酯改性的多元醇(PCL205,由DaicelChemical Industries, Ltd.生产,分子量:500)、35质量份炭黑和50质量份氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co.,Ltd.生产)分散到300 质量份甲乙酮(MEK)中而制备用于表面涂层的涂料组合物。 [0077] 100 parts by mass of polyols by caprolactone-modified alcohol (PCL205, the DaicelChemical Industries, Ltd., molecular weight: 500), HDI and 35 parts by mass Carbon black 50 parts by mass of an isocyanurate-modified ( Coronate HX, is dispersed by NipponPolyurethane Industry Co., Ltd., Ltd.) to 300 parts by mass of methyl ethyl ketone (MEK) in the coating composition for surface coating. 将由此获得的涂料组合物涂布在具有由聚氨酯泡沫制成的弹性层的辊体的外围上以形成表面涂层,由此制得显影辊。 The thus obtained coating composition on the periphery of the roller body has an elastic layer made of a polyurethane foam to form a surface coating layer, thereby obtaining the developing roller. 然后,通过公知方法评价由此获得的显影辊的辊电阻、10点平均粗糙度(Rz)、Asker C硬度和调色剂充电性能。 Then, the developing roller thus obtained was evaluated by a known method of roll resistance, 10-point average roughness (Rz), Asker C hardness, and the toner charging performance. 另外,通过将显影辊组装在激光打印机中以进行打印来评价成像性能。 Further, the developing roller is assembled in a laser printer to print to evaluate imaging performance. 还将显影辊组装在墨盒中并且保持于50°C和90% RH的环境下,随后测量感光鼓上污染的存在或不存在以及在显影辊上的由于刮板挤压痕迹的存在或不存在。 The developing roller also is assembled in an ink cartridge and held at 50 ° C for 90% RH environment and then measuring the presence of the photosensitive drum and the contamination due to the absence or presence of the extrusion blade or absence of marks on the developing roller . 结果示于表1中。 The results are shown in Table 1.

[0078](实施例2) [0078] (Example 2)

[0079] 通过将100质量份己内酯改性的多元醇(PCL210N,由DaicelChemical Industries, Ltd.生产,分子量:1000)、35质量份炭黑和50质量份氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co.,Ltd.生产)分散到300 质量份MEK中而制备用于表面涂层的涂料组合物。 [0079] 100 parts by mass of polyols by caprolactone-modified alcohol (PCL210N, the DaicelChemical Industries, Ltd., molecular weight: 1,000), 35 parts by mass of carbon black and 50 parts by mass of an isocyanurate-modified HDI ( Coronate HX, is dispersed by NipponPolyurethane Industry Co., Ltd., Ltd.) to 300 parts by mass of MEK coating composition for surface coating. 通过使用由此获得的涂料组合物代替在实施例1中制备的涂料组合物而制备显影辊,然后进行评价。 By using the thus obtained coating composition was replaced with the coating composition prepared in Example 1 to prepare a developing roller of the embodiment and then evaluated. 结果示于表1中。 The results are shown in Table 1.

[0080](实施例3) [0080] (Example 3)

[0081] 通过将100质量份己内酯改性的多元醇(PCL220,由DaicelChemical Industries, Ltd.生产,分子量:2000)、35质量份炭黑和50质量份氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co.,Ltd.生产)分散到300 质量份MEK中而制备用于表面涂层的涂料组合物。 [0081] 100 parts by mass of polyols by caprolactone-modified alcohol (PCL220, the DaicelChemical Industries, Ltd., molecular weight: 2000), HDI and 35 parts by mass Carbon black 50 parts by mass of an isocyanurate-modified ( Coronate HX, is dispersed by NipponPolyurethane Industry Co., Ltd., Ltd.) to 300 parts by mass of MEK coating composition for surface coating. 通过使用由此获得的涂料组合物代替在实施例1中制备的涂料组合物而制备显影辊,然后进行评价。 By using the thus obtained coating composition was replaced with the coating composition prepared in Example 1 to prepare a developing roller of the embodiment and then evaluated. 结果示于表1中。 The results are shown in Table 1.

[0082](实施例4) [0082] (Example 4)

[0083] 通过将100质量份己内酯改性的多元醇(PCL312,由DaicelChemical Industries, Ltd.生产,分子量:1200)、35质量份炭黑和50质量份氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co.,Ltd.生产)分散到300 质量份MEK中而制备用于表面涂层的涂料组合物。 [0083] 100 parts by mass of polyols by caprolactone-modified alcohol (PCL312, the DaicelChemical Industries, Ltd., molecular weight: 1,200), 35 parts by mass of carbon black and 50 parts by mass of an isocyanurate-modified HDI ( Coronate HX, is dispersed by NipponPolyurethane Industry Co., Ltd., Ltd.) to 300 parts by mass of MEK coating composition for surface coating. 通过使用由此获得的涂料组合物代替在实施例1中制备的涂料组合物而制备显影辊,然后进行评价。 By using the thus obtained coating composition was replaced with the coating composition prepared in Example 1 to prepare a developing roller of the embodiment and then evaluated. 结果示于表1中。 The results are shown in Table 1.

[0084](比较例1) [0084] (Comparative Example 1)

[0085] 通过将100质量份聚碳酸酯二醇改性的聚氨酯漆(N5196,由Nippon Polyurethane Industry Co. , Ltd.生产)、35质量份炭黑和50质量份氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co.,Ltd.生产)分散到300 质量份MEK中而制备用于表面涂层的涂料组合物。 [0085] by adding 100 parts by mass of polycarbonate diol-modified polyurethane paint (N5196, from the Nippon Polyurethane Industry Co., Ltd., Ltd.), 35 parts by mass of carbon black and 50 parts by mass of an isocyanurate-modified HDI (Coronate HX, a NipponPolyurethane Industry Co., Ltd.) are dispersed into 300 parts by mass of MEK to prepare a coating composition for surface coating. 通过使用由此获得的涂料组合物代替在实施例1中制备的涂料组合物而制备显影辊,然后进行评价。 By using the thus obtained coating composition was replaced with the coating composition prepared in Example 1 to prepare a developing roller of the embodiment and then evaluated. 结果示于表1中。 The results are shown in Table 1.

[0086](比较例2) [0086] (Comparative Example 2)

[0087] 通过将100质量份己二酸改性的聚氨酯漆(N3126,由NipponPolyurethane Industry Co.,Ltd.生产)、35质量份炭黑和50质量份氰脲酸酯改性的HDI (Coronate HX, 由NipponPolyurethane Industry Co. , Ltd.生产)分散到300质量份MEK中而制备用于表面涂层的涂料组合物。 [0087] 100 parts by mass of adipic acid-modified polyurethane paint (N3126, the NipponPolyurethane Industry Co., Ltd., Ltd.), 35 parts by mass of carbon black and 50 parts by mass of an isocyanurate-modified HDI (Coronate HX dispersed in 300 parts by mass of MEK NipponPolyurethane Industry Co., Ltd., Ltd.) to prepare a surface coating of the coating composition. 通过使用由此获得的涂料组合物代替在实施例1中制备的涂料组合物而制备显影辊,然后进行评价。 By using the thus obtained coating composition was replaced with the coating composition prepared in Example 1 to prepare a developing roller of the embodiment and then evaluated. 结果示于表1中。 The results are shown in Table 1.

[0088] 表1 [0088] TABLE 1

[0089] [0089]

Figure CN1963685BD00141
Figure CN1963685BD00151

[0090] 〇:良好,A :稍差,X :差[0091] 从表1中看出,由于感光鼓未被污染、压缩永久变形低、未造成由于刮板的挤压痕迹并且对调色剂的损坏小,因此根据本发明的实施例的显影辊可以稳定地形成优良图像。 [0090] ○: good, A: slightly poor, X-: difference [0091] As seen from Table 1, since the photosensitive drum is not contaminated, low compression set, causing no trace since the pressing blade and the toner for small damage agents, it is possible to stably form an excellent image developing roller according to an embodiment of the present invention.

[0092](实施例5) [0092] (Example 5)

[0093] 通过将100质量份内酯改性的多元醇(PCL210N,由DaicelChemical Industries, Ltd.生产,Mn= 1000,Mw/Mn= 1. 7)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Artpearl C800,由Negami Kogyo Co.,Ltd.生产,平均粒径:8. 8 μ m)分散到500质量份甲乙酮(MEK)中,加入40质量份([NCO]/[0H]摩尔比=1.0)的异氰酸酯固化剂(Coronate HX,由NipponPolyurethane Industry Co. ,Ltd.生产,NC0% = 21 % ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0093] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL210N, the DaicelChemical Industries, Ltd. production, Mn = 1000, Mw / Mn = 1. 7), 30 parts by mass of carbon black and 10 parts by mass carbamoyl ester particles (Artpearl C800, the Negami Kogyo Co., Ltd, having a mean particle diameter: 8 8 μ m..) dispersed in 500 parts by mass of methyl ethyl ketone (MEK) was added 40 parts by mass ([NCO] / [0H] molar ratio = 1.0) isocyanate curing agent (Coronate HX, a NipponPolyurethane Industry Co., Ltd. production, NC0% = 21%), followed by stirring for 30 minutes while stirring motor prepare a coating composition for the surface coating. 将由此获得的涂料组合物涂布在具有由聚氨酯泡沫制成的弹性层的辊体的外围上以形成表面涂层,由此制得显影辊。 The thus obtained coating composition on the periphery of the roller body has an elastic layer made of a polyurethane foam to form a surface coating layer, thereby obtaining the developing roller.

[0094](实施例6) [0094] (Example 6)

[0095] 通过将100质量份内酯改性的多元醇(PCL230,由DaicelChemical Industries, Ltd.生产,Mn = 3000,Mw/Mn = 2. 1)、30质量份炭黑和10质量份氨基甲酸酯颗粒(MX 1000, 由SokenKagaku Kogyo Co.,Ltd.生产,平均粒径:10. O μ m)分散到500质量份MEK中, 加入15质量份([NCO]/[0H]摩尔比=1. 0)的异氰酸酯固化剂(Coronate HX,由Nippon Polyurethane IndustryCo.,Ltd.生产,NC0%= 21% ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0095] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL230, the DaicelChemical Industries, Ltd. production, Mn = 3000, Mw / Mn = 2. 1), 30 parts by mass of carbon black and 10 parts by mass carbamoyl ester particles (MX 1000, a SokenKagaku Kogyo Co., Ltd, having a mean particle diameter:.. 10 O μ m) dispersed in 500 parts by mass of MEK, 15 parts by mass ([NCO] / [0H] molar ratio = 1.0) isocyanate curing agent (Coronate HX,., Ltd. production, NC0% = 21%), followed by stirring by a motor Nippon Polyurethane IndustryCo stirred for 30 minutes and the coating composition for surface coating. 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影辊。 By using the thus obtained coating composition was replaced with the coating composition of Example 5 was prepared in the developing roller.

[0096](实施例7) [0096] (Example 7)

[0097] 通过将100质量份内酯改性的多元醇(试验的PCL250B,由Daicel Chemical Industries, Ltd.生产,Mn = 5000, Mw/Mn = 2. 3)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Artpearl C800,由Negami Kogyo Co.,Ltd.生产,平均粒径:8. 8 μ m)分散到500 质量份MEK中,加入8质量份([NCO]/[0H]摩尔比=1.0)的异氰酸酯固化剂(Coronate HX, 由Nippon Polyurethane IndustryCo. ,Ltd.生产,NC0% = 21 % ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0097] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL250B test by Daicel Chemical Industries, Ltd. production, Mn = 5000, Mw / Mn = 2. 3), 30 parts by mass of carbon black and 10 mass parts of urethane particles (Artpearl C800, the Negami Kogyo Co., Ltd, having a mean particle diameter:.. 8 8 μ m) dispersed in 500 parts by mass of MEK were added 8 parts by mass ([NCO] / [0H] molar ratio = 1.0) isocyanate curing agent (Coronate HX,., Ltd. production, NC0% = 21%), followed by stirring by a motor Nippon Polyurethane IndustryCo stirred for 30 minutes and the coating composition for surface coating. 通过使用由此获得的涂料组合物代替实施例5 的涂料组合物而制备显影辊。 By using the thus obtained coating composition was replaced with the coating composition of Example 5 was prepared in the developing roller.

[0098](实施例8) [0098] (Example 8)

[0099] 通过将100质量份内酯改性的多元醇(试验的PCL250B,由Daicel Chemical Industries, Ltd.生产,Mn = 5000, Mw/Mn = 2. 3)、30质量份炭黑和10质量份氨基甲酸酯颗粒(VernocCFB101-40,由Dainippon Ink and Chemicals, Inc.生产,平均粒径:14 μ m) 分散到500质量份MEK中,加入20质量份([NCO]/[0H]摩尔比=2.5)的异氰酸酯固化剂(Coronate HX,由Nippon Polyurethane Industry Co. ,Ltd.生产,NC0% = 21 % ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0099] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL250B test by Daicel Chemical Industries, Ltd. production, Mn = 5000, Mw / Mn = 2. 3), 30 parts by mass of carbon black and 10 mass parts of urethane particles (VernocCFB101-40, by the Dainippon Ink and Chemicals, Inc., having a mean particle diameter: 14 μ m) dispersed in 500 parts by mass of MEK, and 20 parts by mass ([NCO] / [0H] mol ratio = 2.5) isocyanate curing agent (Coronate HX, a Nippon Polyurethane Industry Co., Ltd. production, NC0% = 21%), followed by stirring for 30 minutes while stirring motor prepare a coating composition for the surface coating. 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影辊。 By using the thus obtained coating composition was replaced with the coating composition of Example 5 was prepared in the developing roller.

[0100](实施例9) [0100] (Example 9)

[0101] 通过将100质量份内酯改性的多元醇(PCL210N,由DaicelChemical Industries, Ltd.生产,Mn= 1000,Mw/Mn= 1. 7)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Artpearl C800,由Negami Kogyo Co.,Ltd.生产,平均粒径:8. 8 μ m)分散到500质量份MEK中,力口入80质量份([NCO]/[0H]摩尔比=1.0)的异氰酸酯固化剂(D-140N,由Mitsui TakedaChemicals, Co.,Ltd.生产,NCO%= 10. 5% ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0101] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL210N, the DaicelChemical Industries, Ltd. production, Mn = 1000, Mw / Mn = 1. 7), 30 parts by mass of carbon black and 10 parts by mass carbamoyl ester particles (Artpearl C800, the Negami Kogyo Co., Ltd, having a mean particle diameter:.. 8 8 μ m) dispersed in 500 parts by mass of MEK, 80 parts by mass of the mouth the force ([NCO] / [0H] mol ratio = 1.0) isocyanate curing agent (D-140N, by the Mitsui TakedaChemicals, Co., Ltd. production, NCO% = 10. 5%), followed by stirring for 30 minutes while stirring motor for preparing the coating composition of the surface coating thereof. 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影棍。 It was prepared by using the thus obtained developing stick coating composition was replaced with the coating composition of Example 5.

[0102](实施例 10) [0102] (Example 10)

[0103] 通过将100质量份内酯改性的多元醇(PCL230,由DaicelChemical Industries, Ltd.生产,Mn = 3000,Mw/Mn = 2. 1)、30质量份炭黑和10质量份氨基甲酸酯颗粒(MX1000, 由SokenKagaku Kogyo Co.,Ltd.生产,平均粒径:10. Oym)分散到500质量份MEK中,力口入30质量份([NCO]/[0H]摩尔比=1.0)的异氰酸酯固化剂(D-140N,由Mitsui Takeda Chemicals, Co.,Ltd.生产,NCO%= 10. 5% ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0103] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL230, the DaicelChemical Industries, Ltd. production, Mn = 3000, Mw / Mn = 2. 1), 30 parts by mass of carbon black and 10 parts by mass carbamoyl ester particles (the MX1000, the SokenKagaku Kogyo Co., Ltd, having a mean particle diameter:.. 10 Oym) dispersed in 500 parts by mass of MEK, 30 parts by mass of the mouth the force ([NCO] / [0H] molar ratio = 1.0 ) isocyanate curing agent (D-140N, by the Mitsui Takeda Chemicals, Co., Ltd. production, NCO% = 10. 5%), then stirred for 30 minutes to prepare a coating composition for coating a surface with a stirring motor. 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影棍。 It was prepared by using the thus obtained developing stick coating composition was replaced with the coating composition of Example 5.

[0104](实施例 11) [0104] (Example 11)

[0105] 通过将100质量份内酯改性的多元醇(试验的PCL250B,由Daicel Chemical Industries, Ltd.生产,Mn = 5000, Mw/Mn = 2. 3)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Artpearl C800,由Negami Kogyo Co.,Ltd.生产,平均粒径:8. 8 μ m)分散到500 质量份MEK中,加入16质量份([NCO]/[0H]摩尔比=1.0)的异氰酸酯固化剂(D-140N,由Mitsui Takeda Chemicals, Co.,Ltd.生产,NCO%= 10. 5% ),然后用搅拌电动机搅拌30 分钟而制备用于表面涂层的涂料组合物。 [0105] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL250B test by Daicel Chemical Industries, Ltd. production, Mn = 5000, Mw / Mn = 2. 3), 30 parts by mass of carbon black and 10 mass parts of urethane particles (Artpearl C800, the Negami Kogyo Co., Ltd, having a mean particle diameter:.. 8 8 μ m) dispersed in 500 parts by mass of MEK, was added 16 parts by mass ([NCO] / [0H] molar ratio = 1.0) isocyanate curing agent (D-140N, by the Mitsui Takeda Chemicals, Co., Ltd. production, NCO% = 10. 5%), followed by stirring for 30 minutes by a stirring motor for the preparation of surface coatings The coating composition. 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影辊。 By using the thus obtained coating composition was replaced with the coating composition of Example 5 was prepared in the developing roller.

[0106](实施例 I2) [0106] (Example I2)

[0107] 通过将100质量份内酯改性的多元醇(试验的PCL250B,由Daicel Chemical Industries, Ltd.生产,Mn = 5000, Mw/Mn = 2. 3)、30质量份炭黑和10质量份氨基甲酸酯颗粒(VernocCFB101-40,由Dainippon Ink and Chemicals, Inc.生产,平均粒径:14 μ m) 分散到500质量份MEK中,加入40质量份([NC0]/[0H]摩尔比=2. 5)的异氰酸酯固化剂(D-140N,由Mitsui Takeda Chemicals, Co.,Ltd.生产,NC0%= 10. 5% ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0107] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL250B test by Daicel Chemical Industries, Ltd. production, Mn = 5000, Mw / Mn = 2. 3), 30 parts by mass of carbon black and 10 mass parts of urethane particles (VernocCFB101-40, by the Dainippon Ink and Chemicals, Inc., having a mean particle diameter: 14 μ m) dispersed in 500 parts by mass of MEK, 40 parts by mass ([NC0] / [0H] mol ratio = 2.5) isocyanate curing agent (D-140N, by the Mitsui Takeda Chemicals, Co., Ltd. production, NC0% = 10. 5%), followed by stirring for 30 minutes by a stirring motor for the preparation of surface coatings the coating composition. 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影辊。 By using the thus obtained coating composition was replaced with the coating composition of Example 5 was prepared in the developing roller.

[0108](实施例 I3) [0108] (Example I3)

[0109] 通过将100质量份内酯改性的多元醇(试验的PCL210,由Daicel Chemical Industries, Ltd.生产,Mn = 1000, Mw/Mn = 1. 9)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Artpearl C800,由Negami Kogyo Co.,Ltd.生产,平均粒径:8. 8 μ m)分散到500 质量份MEK中,加入108质量份([NCO]/[0H]摩尔比=2. 5)的异氰酸酯固化剂(Coronate HX,由Nippon PolyurethaneIndustry Co.,Ltd.生产,NCO%= 21% ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0109] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL210 test by Daicel Chemical Industries, Ltd. production, Mn = 1000, Mw / Mn = 1. 9), 30 parts by mass of carbon black and 10 mass parts of urethane particles (Artpearl C800, the Negami Kogyo Co., Ltd, having a mean particle diameter:.. 8 8 μ m) dispersed in 500 parts by mass of MEK were added 108 parts by mass of ([NCO] / [0H] molar ratio = 2.5) isocyanate curing agent (Coronate HX, a Nippon PolyurethaneIndustry Co., Ltd. production, NCO% = 21%), followed by stirring for 30 minutes by a stirring motor prepare a coating composition for the surface coating . 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影辊。 By using the thus obtained coating composition was replaced with the coating composition of Example 5 was prepared in the developing roller.

[0110](实施例 14) [0110] (Example 14)

[0111] 通过将氨基甲酸酯乳液涂料(试验的E4000,由Dai-ichiKogyo Seiyaku Co., Ltd.生产)作为中间涂层以70μπι的厚度涂布在具有由聚氨酯泡沫制成的弹性层的辊体的外围上,然后将实施例5的涂料组合物涂布在其上以形成表面涂层而制备显影辊。 [0111] By coating the urethane emulsion (test E4000, the Dai-ichiKogyo Seiyaku Co., Ltd.) as a coating applied to a thickness 70μπι intermediate in roller having an elastic layer made of polyurethane foam on the periphery of the body, to form a surface coating is prepared on a developing roller and the embodiment in which the coating composition of Example 5. [0112](比较例3) [0112] (Comparative Example 3)

[0113] 通过将100质量份基于己二酸酯的多元醇(P-2010,由KurarayCo.,Ltd.生产,Mn =2000, Mw/Mn = 2. 2)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Artpearl C800,由NegamiKogyo Co.,Ltd.生产,平均粒径:8. 8 μ m)分散到500质量份MEK中,加入30质量份([NCO]/[0H]摩尔比=1. 5)的异氰酸酯固化剂(Coronate HX,由Nippon Polyurethane Industry Co.,Ltd.生产,NC0% = 21 % ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0113] 100 parts by mass of adipate based polyol (P-2010, made KurarayCo., Ltd. Production, Mn = 2000, Mw / Mn = 2. 2), 30 parts by mass of carbon black and 10 mass parts of urethane particles (Artpearl C800, the NegamiKogyo Co., Ltd, having a mean particle diameter:.. 8 8 μ m) dispersed in 500 parts by mass of MEK, 30 parts by mass ([NCO] / [0H] mol ratio = 1.5) isocyanate curing agent (Coronate HX, a Nippon Polyurethane Industry Co., Ltd. production, NC0% = 21%), then stirred for 30 minutes to prepare a coating composition for coating a surface with a stirring motor . 通过使用由此获得的涂料组合物代替实施例5的涂料组合物而制备显影棍。 It was prepared by using the thus obtained developing stick coating composition was replaced with the coating composition of Example 5.

[0114](比较例4) [0114] (Comparative Example 4)

[0115] 通过将100质量份内酯改性的多元醇(PCL205,由DaicelChemical Industries, Ltd.生产,Mn = 500,Mw/Mn = 1. 6)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Vernoc CFB101-40,由Dainippon Ink and Chemicals, Inc.生产,平均粒径:14 μ m)分散到500 质量份MEK中,加入120质量份([NCO]/[0H]摩尔比=1. 5)的异氰酸酯固化剂(Coronate HX, 由Nippon PolyurethaneIndustry Co. ,Ltd.生产,NC0% = 21 % ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0115] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL205, the DaicelChemical Industries, Ltd. production, Mn = 500, Mw / Mn = 1. 6), 30 parts by mass of carbon black and 10 parts by mass carbamoyl ester particles (Vernoc CFB101-40, of Dainippon Ink and Chemicals, Inc., having a mean particle diameter: 14 μ m) dispersed in 500 parts by mass of MEK were added 120 parts by mass of ([NCO] / [0H] molar ratio = 1.5) isocyanate curing agent (Coronate HX, a Nippon PolyurethaneIndustry Co., Ltd. production, NC0% = 21%), followed by stirring for 30 minutes while stirring motor prepare a coating composition for the surface coating. 通过使用由此获得的涂料组合物代替实施例5 的涂料组合物而制备显影辊。 By using the thus obtained coating composition was replaced with the coating composition of Example 5 was prepared in the developing roller.

[0116](比较例5) [0116] (Comparative Example 5)

[0117] 通过将100质量份内酯改性的多元醇(试验的PCL220B,由Daicel Chemical Industries, Ltd.生产,Mn = 2000, Mw/Mn = 2. 8)、30质量份炭黑和10质量份氨基甲酸酯颗粒(Artpearl C800,由Negami Kogyo Co.,Ltd.生产,平均粒径:8. 8 μ m)分散到500 质量份MEK中,加入30质量份([NC0]/[0H]摩尔比=1.5)的异氰酸酯固化剂(Coronate HX, 由Nippon Polyurethane IndustryCo. ,Ltd.生产,NC0% = 21 % ),然后用搅拌电动机搅拌30分钟而制备用于表面涂层的涂料组合物。 [0117] 100 parts by mass of the lactone-modified polyhydric alcohol (PCL220B test by Daicel Chemical Industries, Ltd. production, Mn = 2000, Mw / Mn = 2. 8), 30 parts by mass of carbon black and 10 mass parts of urethane particles (Artpearl C800, the Negami Kogyo Co., Ltd, having a mean particle diameter:.. 8 8 μ m) dispersed in 500 parts by mass of MEK, 30 parts by mass ([NC0] / [0H] molar ratio = 1.5) isocyanate curing agent (Coronate HX,., Ltd. production, NC0% = 21%), followed by stirring by a motor Nippon Polyurethane IndustryCo stirred for 30 minutes and the coating composition for surface coating. 通过使用由此获得的涂料组合物代替实施例5 的涂料组合物而制备显影辊。 By using the thus obtained coating composition instead of the coating composition of Example 5 was prepared the developing roller.

[0118] 就这些实施例和比较例的显影辊而言,通过以下方法测量表面涂层的性能、显影辊的性能和成像性能。 [0118] The developing roller on these examples and comparative examples, the measurement of the surface coating properties, imaging performance, and the performance of the developing roller by the following method. 这些实施例和比较例的评价结果示于表2中。 Evaluation results of these Examples and Comparative Examples are shown in Table 2.

[0119] (1)数均分子量(Mn)和分子量分布 [0119] (1) Number average molecular weight (Mn) and molecular weight distribution

[0120] 通过凝胶渗透色谱(GPC)基于单分散的聚苯乙烯样品计算用于形成每一涂料组合物的多元醇的数均分子量(Mn)和分子量分布。 Number of [0120] determined by gel permeation chromatography (GPC) is calculated based on monodisperse polystyrene samples used to form each coating composition polyol average molecular weight (Mn) and molecular weight distribution.

[0121] (2)储能模量 [0121] (2) a storage modulus

[0122] 通过压延法使每一实施例和比较例的显影辊的表面涂层用涂料组合物成型为薄膜,并且通过在将溶剂充分蒸发之后在100°C下加热1小时而将其固化形成0. 3mm的涂覆膜。 [0122] surface of the coating layer such that each of the developing roller of the embodiment of Examples and Comparative Examples coating composition is formed into a film by calendering, and it is cured and formed by heating at 100 ° C for the solvent is sufficiently evaporated after 1 hour 0. 3mm coating film. 此后,通过以6mm的宽度设置薄膜而形成测量样品。 Thereafter, the measurement sample is formed by a thin film of 6mm width. 通过以下方式测量储能模量:在型号DDV-OlFP的动态粘弹装置(由A&D Corp.制造)中将样品固定在卡盘之间的距离30mm 下,并且在频率:10Hz、应变:1%、升温速率:5°C /min以及温度范围:-50°C至80°C的条件下进行拉伸模式的测量。 Storage modulus is measured in the following manner: In the dynamic viscoelastic apparatus of Model DDV-OlFP (manufactured by A & D Corp., Ltd.) in the sample a fixed distance between the chucks 30mm, and frequency: 10Hz, strain: 1% , heating rate: measured by tensile mode at -50 ° C to to 80 ° C conditions: 5 ° C / min, and temperature range. 在该情况下,E'(25°C)表示在25°C下的储能模量。 In this case, E '(25 ° C) represents a storage modulus at 25 ° C and.

[0123] (3)辊电阻 [0123] (3) the roller resistance

[0124] 如下测量辊电阻。 [0124] measuring the roller resistance are as follows. S卩,在Ikg的压力下将显影辊的外围表面推送到圆柱形的相对电极上,在轴与该相对电极之间施加100V的电压,由其电流值测量辊电阻。 S Jie, at a pressure Ikg the peripheral surface of the developing roller is pushed to the cylindrical opposing electrode voltage of 100V is applied between the shaft and the counter electrode, a current value measured by the resistance roller. [0125] (4)表面粗糙度 [0125] (4) Surface roughness

[0126] 根据JIS B0601评价算术平均粗糙度(Ra)和10点平均粗糙度(Rz)。 [0126] According to JIS B0601 evaluation arithmetic average roughness (Ra) and ten point average roughness (Rz).

[0127] (5)表面粗糙度 [0127] (5) Surface roughness

[0128] 通过采用微型橡胶硬度计MD-I (由Koubunshi KeikishaCo.,Ltd.制造)测量被试验的显影辊的表面硬度。 [0128] The surface hardness was tested by using a micro rubber hardness meter MD-I (a Koubunshi KeikishaCo., Ltd., Ltd.) Measurement developing roller.

[0129] (6)感光鼓的污染 Contamination [0129] (6) the photosensitive drum,

[0130] 在Ikg的负荷下将被试验的显影辊推送到感光鼓上,并且在40°C和95% RH的高温、高湿度条件下放置。 [0130] In Ikg a load test to be pushed to the developing roller to the photosensitive drum, and placed at 40 ° C under 95% RH and high temperature and high humidity conditions. 在预定的时间(1星期)过去之后,将显影辊取出并且组装在实际的机器中以进行成像,并且根据以下标准评价在显影辊与感光鼓之间的接触部位中的图像: 〇:感光鼓没有污染,Δ :感光鼓轻微污染,和X :感光鼓由于渗出而污染。 After the lapse of the developing roller taken at a predetermined time (one week) and assembled in an actual machine for imaging, and the image in accordance with the following criteria in the contact portion between the developing roller and the photosensitive drum: ○: the photosensitive drum no pollution, Δ: slight contamination of the photosensitive drum, and X: bleeding due to the contamination of the photosensitive drum.

[0131] (7)压缩永久变形 [0131] (7) Compression set

[0132] 进行如同上述感光鼓的污染中的相同测试,以根据以下标准评价在显影辊与感光鼓之间的接触部位中的图像:〇:与感光鼓没有接触痕迹,Δ :与感光鼓有轻微的接触痕迹,和X :与感光鼓有清晰的接触痕迹。 [0132] The same test as performed above contamination of the photosensitive drum, the image portion at the contact between the developing roller and the photosensitive drum in accordance with the following criteria: ○: No traces of contact with the photosensitive drum, [Delta]: the photosensitive drum has slight traces of contact, and X: the photosensitive drum with a clear contact marks.

[0133] (8)成像浓度 [0133] (8) forming a concentration

[0134] 将被试验的显影辊组装在墨盒中,然后在由Hewlett-Packard Co.制造的彩色打印机LBP4600中在2%的打印率下在低温低湿度(LL)环境(15°C,10% RH)、常温常湿(NN) 环境(25°C,50% RH)或者高温高湿(HH)环境(30°C,80% RH)下进行连续的成像,由此在初始阶段和在打印5000张纸后分别形成一种颜色的图像和半色调图像。 [0134] A developing roller was tested in the ink cartridge is assembled, and then the color printer LBP4600 manufactured by Hewlett-Packard Co. under the printing rate of 2% in low temperature and low humidity (LL) environment (15 ° C, 10% RH), normal temperature and humidity (NN) environment (25 ° C, 50% RH) or high temperature and high humidity (HH) environment (30 ° C, 80% RH) under continuous image, whereby the printing in the initial stage, and forming an image and a halftone image of each color after 5,000 sheets. 根据以下标准用肉眼评价这些一种颜色的图像和半色调图像:〇:不存在浓度不均勻,Δ :轻微存在浓度不均勻,和X :存在浓度不均勻。 Was visually evaluated according to the following criteria of a color image and the halftone image: ○: absence of uneven concentration, [Delta]: slight density unevenness is present, and X: presence of uneven concentration.

[0135] (9)耐起雾[0136] 在形成一种白色图像期间强行停止打印机的操作之后,通过基于纸带移动而比较浓度(借助于Macbeth浓度计)来测量在白色部分中飞散到感光鼓上的调色剂的数量。 After [0135] (9) resistant to fogging [0136] During the formation of a white image to forcibly stop operation of the printer, based on the tape is measured by comparing the concentration of movement (by means of a Macbeth densitometer) to the photosensitive white scattering portion amount of the toner on the drum. O : 少于0. 15,Δ :0. 15-0. 20,和X :超过0. 20。 O: less than 0. 15, Δ:.. 0 15-0 20, and X: more than 0.20.

[0137] (10)耐调色剂熔化性 [0137] (10) resistant to toner fusion of

[0138] 将被试验的显影辊在表面上撒有调色剂并且组装在墨盒中,将其在40°C和95% RH下放置1星期,然后进行成像。 [0138] The developing roller to be tested on the surface of the toner cartridge rubbed and assembled, which was left for one week, and 40 ° C under 95% RH, and then imaged. 〇:从第一张图像起没有调色剂附着在显影辊的表面,Δ : 直到第十张图像没有调色剂附着在显影辊的表面,和X :甚至在第十张图像范围内观察到调色剂附着在显影辊的表面。 ○: no toner adhered to the surface of the developing roller, from the first image [Delta]: X images until no toner adheres to the surface of the developing roller and X: observed even in the range of images to a tenth the toner adhering to the surface of the developing roller.

[0139]表 2 [0139] TABLE 2

[0140] [0140]

实施例 比较例 Example Comparative Example

5 6 7 8 9 10 11 12 13 14 3 4 5 5,678,910,111,213,143. 4. 5

19 19

Figure CN1963685BD00201

[0141] 从表2中看出,由于感光鼓未被污染、压缩永久变形低、未造成由于刮板的挤压痕迹、对调色剂的损坏小并且耐调色剂熔化性优良,因此根据本发明的实施例的显影辊可以稳定地形成优良图像。 [0141] As seen from Table 2, since the photosensitive drum is not contaminated, low compression set, causing no trace since the pressing blade, less damage to the toner and is excellent in resistance to toner fusion, and therefore in accordance with the developing roller of the embodiment of the present invention can stably form an excellent image.

[0142](实施例 15) [0142] (Example 15)

[0143] 通过将5质量份炭黑分散到100质量份含水丙烯酸树脂(由Nogawa C hemicals Co. ,Ltd.生产)中而制备用于中间涂层的涂料组合物。 [0143] by mass by adding 5 parts of carbon black dispersed in 100 parts by mass of an aqueous acrylic resin (made Co. Nogawa C hemicals, Ltd., Ltd.) to prepare a coating composition for the intermediate coat layer. 同样,通过将100质量份己内酯改性的丙烯酸氨基甲酸酯(由Azia Kogyo Co.,Ltd.生产,将硅酮引入氨基甲酸酯部分)、 35质量份炭黑和50质量份异氰脲酸酯改性的HDI (Coronate HX,由Nippon Polyurethane Industry Co. , Ltd.生产)分散到300质量份甲乙酮(MEK)中而制备用于表面涂层的涂料组合物。 Similarly, 100 parts by mass of caprolactone-modified urethane acrylate (manufactured by Azia Kogyo Co., Ltd. Production, the introduction of urethane silicone portion), 35 parts by mass of carbon black and 50 parts by mass iso isocyanurate-modified HDI (Coronate HX, a Nippon Polyurethane Industry Co., Ltd.) were dispersed into 300 parts by mass of methyl ethyl ketone (MEK) was prepared for coating in the surface coating composition. 将用于中间涂层的涂料组合物涂布在具有由聚氨酯泡沫制成的弹性层的辊体的外围上以形成中间涂层,此后将用于表面涂层的涂料组合物涂布以形成表面涂层,由此制得显影辊。 The coating composition for the intermediate coating layer on the periphery of the roller body has an elastic layer made of polyurethane foam to form an intermediate coating, after which the coating composition for the surface to form a surface coating layer coating, thereby producing the developing roller. 然后通过公知方法评价由此得到的显影辊的辊电阻、10点平均粗糙度(Rz)、 AskerC硬度、摩擦系数、调色剂充电性能,同时通过将该显影辊组装在激光打印机中进行打印来评价图像性能。 Is then evaluated by a known method to obtain a roller resistance of the developing roller, the 10-point average roughness (Rz), AskerC hardness, friction coefficient, the toner charging performance, while the developing roller is assembled by printing in a laser printer to evaluation of image properties. 同样,将显影辊组装在墨盒中并且保持于50°C和90% RH的环境下1 星期,随后测量感光鼓上污染的存在或不存在以及在显影辊表面上的由于刮板的挤压痕迹的存在或不存在。 Also, the developing roller in the cartridge is assembled and held at 50 ° C for the environment and 90% RH for one week, and then measuring the presence of the photosensitive drum and the presence or absence of contamination due to the pressing blade traces on the surface of the developing roller the presence or absence. 结果示于表3中。 The results are shown in Table 3.

[0144](实施例 16)[0145] 通过将5质量份炭黑分散到100质量份含水聚氨酯树脂(由Dai-ichi Kogyo Seiyaku Co.,Ltd.生产)中而制备用于中间涂层的涂料组合物。 [0144] (Example 16) [0145] by adding 5 parts by mass of carbon black dispersed in 100 parts by mass of the aqueous urethane resin (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., Ltd.) was prepared for coating the intermediate coating combination. 同样,通过将100质量份己内酯改性的丙烯酸氨基甲酸酯(由Azia Kogyo Co.,Ltd.生产,将硅酮引入丙烯酸部分)、 35质量份炭黑和50质量份异氰脲酸酯改性的HDI (Coronate HX,由Nippon Polyurethane Industry Co.,Ltd.生产)分散到300质量份M EK中而制备用于表面涂层的涂料组合物。 Similarly, 100 parts by mass of caprolactone-modified urethane acrylate (manufactured by Azia Kogyo Co., Ltd. Production, introducing the silicone acrylic portion), 35 parts by mass of carbon black and 50 parts by mass of isocyanuric acid ester-modified HDI (Coronate HX, a Nippon Polyurethane Industry Co., Ltd.) are dispersed into 300 parts by mass of M EK prepared coating composition for surface coating. 通过使用由此获得的用于中间涂层和表面涂层的涂料组合物代替实施例15的涂料组合物而制备显影辊,并且进行评价。 By using the thus obtained coating composition for the intermediate coating layer and surface coating of the coating composition used in Example 15, a developing roller was prepared, and evaluated. 结果示于表3中。 The results are shown in Table 3.

[0146](实施例 17) [0146] (Example 17)

[0147] 通过将5质量份炭黑分散到100质量份含水胶乳(由KouatsuGas Kogyo Co.,Ltd. 生产)中而制备用于中间涂层的涂料组合物。 [0147] by mass by adding 5 parts of carbon black dispersed in 100 parts by mass of the aqueous latex (manufactured by KouatsuGas Kogyo Co., Ltd., Ltd.) to prepare a coating composition for the intermediate coat layer. 同样,通过将100质量份己内酯改性的丙烯酸氨基甲酸酯(由AziaKogyo Co. ,Ltd.生产,将硅酮引入丙烯酸部分)、35质量份炭黑和50 质量份异氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co. , Ltd. 生产)分散到300质量份MEK中而制备用于表面涂层的涂料组合物。 Similarly, the 100 parts by mass of caprolactone-modified urethane acrylate (manufactured, by a part of the silicone acrylate is introduced AziaKogyo Co., Ltd), 35 parts by mass of carbon black and 50 parts by mass isocyanurate modified HDI (Coronate HX, a NipponPolyurethane Industry Co., Ltd.) were dispersed into 300 parts by mass of MEK to prepare a coating composition for surface coating. 通过使用由此获得的用于中间涂层和表面涂层的涂料组合物代替实施例15的涂料组合物而制备显影辊,并且进行评价。 By using the thus obtained coating composition for the intermediate coating layer and surface coating of the coating composition used in Example 15, a developing roller was prepared, and evaluated. 结果示于表3中。 The results are shown in Table 3.

[0148](实施例 18) [0148] (Example 18)

[0149] 通过将100质量份己内酯改性的丙烯酸氨基甲酸酯(由AziaKogyo Co.,Ltd.生产,将硅酮引入丙烯酸部分)、35质量份炭黑和50质量份氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co. ,Ltd.生产)分散到300 质量份MEK 中而制备用于表面涂层的涂料组合物。 [0149] by adding 100 parts by mass of caprolactone-modified urethane acrylate (manufactured, by a part of the silicone acrylate is introduced AziaKogyo Co., Ltd), 35 parts by mass of carbon black and 50 parts by mass cyanurate modified HDI (Coronate HX, a NipponPolyurethane Industry Co., Ltd.) are dispersed into 300 parts by mass of MEK to prepare a coating composition for surface coating. 通过使用由此获得的用于表面涂层的涂料组合物代替实施例15 的涂料组合物而不形成中间涂层来制备显影辊,并且进行评价。 By using the thus obtained coating composition for a surface coating of the coating composition used in Example 15 to prepare a developing roller without forming the intermediate coating, and evaluated. 结果示于表3中。 The results are shown in Table 3.

[0150](比较例6) [0150] (Comparative Example 6)

[0151] 通过将5质量份炭黑分散到100质量份含水丙烯酸树脂(由Nogawa Chemicals Co. ,Ltd.生产)中而制备用于中间涂层的涂料组合物。 [0151] by mass by adding 5 parts of carbon black dispersed in 100 parts by mass of an aqueous acrylic resin (manufactured by Nogawa Chemicals Co., Ltd., Ltd.) to prepare a coating composition for the intermediate coat layer. 同样,通过将100质量份未引入硅酮的氨基甲酸酯丙烯酸涂料(由Azia Kogyo Co.,Ltd.生产)、35质量份炭黑和50质量份异氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co. , Ltd.生产) 分散到300质量份MEK中而制备用于表面涂层的涂料组合物。 Similarly, 100 parts by mass of the urethane acrylate, a silicone coating not introduced (by the Azia Kogyo Co., Ltd., Ltd.), 35 parts by mass of carbon black and 50 parts by mass of urea-modified isocyanates HDI (Coronate HX, a NipponPolyurethane Industry Co., Ltd.) were dispersed into 300 parts by mass of MEK to prepare a coating composition for the surface coating. 通过使用由此获得的用于中间涂层和表面涂层的涂料组合物代替实施例15的涂料组合物而制备显影辊,并且进行评价。 By using the thus obtained coating composition for the intermediate coating layer and surface coating of the coating composition used in Example 15, a developing roller was prepared, and evaluated. 结果示于表3中。 The results are shown in Table 3.

[0152](比较例7) [0152] (Comparative Example 7)

[0153] 通过将5质量份炭黑分散到100质量份含水聚氨酯树脂(由Dai-ichi Kogyo Seiyaku Co.,Ltd.生产)中而制备用于中间涂层的涂料组合物。 [0153] by mass by adding 5 parts of carbon black dispersed in 100 parts by mass of aqueous polyurethane resin (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., Ltd.) to prepare a coating composition for the intermediate coat layer. 同样,通过将100质量份未引入硅酮的氨基甲酸酯丙烯酸树脂(由Azia Kogyo Co.,Ltd.生产)、35质量份炭黑和50 质量份异氰脲酸酯改性的HDI (Coronate HX,由NipponPolyurethane Industry Co. , Ltd. 生产)分散到300质量份MEK中而制备用于表面涂层的涂料组合物。 Similarly, 100 parts by mass of the urethane resin, acrylic silicone without introducing (a Azia Kogyo Co., Ltd., Ltd.), 35 parts by mass of carbon black and 50 parts by mass of urea-modified isocyanates HDI (Coronate HX, a NipponPolyurethane Industry Co., Ltd.) were dispersed into 300 parts by mass of MEK to prepare a coating composition for the surface coating. 通过使用由此获得的用于中间涂层和表面涂层的涂料组合物代替实施例15的涂料组合物而制备显影辊,并且进行评价。 By using the thus obtained coating composition for the intermediate coating layer and surface coating of the coating composition used in Example 15, a developing roller was prepared, and evaluated. 结果示于表3中。 The results are shown in Table 3.

[0154]表 3 [0154] TABLE 3

[0155] [0155]

Figure CN1963685BD00221
Figure CN1963685BD00231

[0157] 〇:良好,〇Δ :较好,Δ :稍差,X :差 [0157] ○: good, 〇Δ: good, [Delta]: slightly poor, X-: difference

[0158] 从表3中看出,由于感光鼓未被污染、压缩永久变形低、未造成由于刮板的挤压痕迹、表面上的摩擦阻力低并且对调色剂的损坏小,因此根据本发明的实施例的显影辊可以稳定地形成优良图像。 [0158] As seen in Table 3, since the photosensitive drum is not contaminated, low compression set, causing no trace since the pressing blade, and a low frictional resistance on the surface of the toner is little damage, and therefore according to the present the developing roller of the embodiment of the invention can stably form an excellent image.

Claims (24)

1. 一种显影辊,其包括轴、形成于该轴外围上的弹性层,和形成于该弹性层的外围面上的表面涂层,其中该表面涂层包含通过将内酯改性的多元醇与多异氰酸酯交联形成的聚氨酯树脂,其中内酯改性的多元醇具有数均分子量(Mn) 1000-5000,其为通过凝胶渗透色谱测量的换算成聚苯乙烯的数均分子量,和由通过凝胶渗透色谱测量的换算成聚苯乙烯的重均分子量(Mw)与数均分子量(Mn)的比值表示的分子量分布(Mw/Mn)不超过2. 5。 1. A developing roller comprising a shaft, an elastic layer formed on the periphery of the shaft, and a surface coating layer formed on the peripheral surface of the elastic layer, wherein the surface coating comprises a lactone-modified polyols by the alcohol and polyurethane resin polyisocyanate crosslinking, wherein the lactone-modified polyol has a number average molecular weight (Mn) 1000-5000, which is the number of gel permeation chromatography in terms of polystyrene measured by average molecular weight, and a molecular weight in terms of polystyrene as measured by gel permeation chromatography weight average molecular weight (Mw) to number average molecular weight (Mn) represents the ratio of distribution (Mw / Mn) is not more than 2.5.
2.根据权利要求1所述的显影辊,其中通过将内酯改性的多元醇与至少两种多异氰酸酯交联而形成聚氨酯树脂。 The developing roller according to claim 1, wherein the polyurethane resin is formed by a lactone modified polyol with at least two polyisocyanate crosslinking.
3.根据权利要求2所述的显影辊,其中该多异氰酸酯含有异氰脲酸酯改性的1,6_己二异氰酸酯或异佛尔酮二异氰酸酯的至少一种。 3. The developing roller according to claim 2, wherein the polyisocyanate containing 1,6_ hexamethylene diisocyanate isocyanurate-modified or at least one heterologous isophorone diisocyanate.
4.根据权利要求1所述的显影辊,其中多异氰酸酯的异氰酸酯基团(NCO)与内酯改性的多元醇的羟基(OH)的摩尔比([NCO]/[OH])为1.0-2.5。 The developing roller according to claim 1, wherein the molar ratio of hydroxyl groups of the polyisocyanate an isocyanate group (NCO) and the lactone-modified polyol (OH) a ([NCO] / [OH]) of 1.0 2.5.
5.根据权利要求1所述的显影辊,其中该表面涂层具有在25°C下的储能模量(E' )为3-50MPa。 The developing roller according to claim 1, wherein the surface coating layer having a storage modulus (E ') at at 25 ° C, 3-50MPa.
6.根据权利要求1所述的显影辊,其中该表面涂层的厚度不超过30 μ m。 6. The developing roller according to claim 1, wherein the surface coating has a thickness of not more than 30 μ m.
7.根据权利要求1所述的显影辊,其中表面涂层的聚氨酯树脂具有将具有硅氧烷键的硅酮引入树脂骨架中的结构。 The developing roller according to claim 1, wherein the polyurethane resin having a surface coating of the silicone structure is introduced into a resin having a siloxane bond skeleton.
8.根据权利要求7所述的显影辊,其中该聚氨酯树脂具有这样的结构:将在其两端具有硅氧烷键和羟基或氨基的硅酮引入氨基甲酸酯部分。 8. The developing roller according to claim 7, wherein the polyurethane resin has a structure: silicones having a siloxane bond and a hydroxyl group or an amino group introduced into the urethane portion at both ends thereof.
9.根据权利要求7所述的显影辊,其中被引入树脂骨架中的硅酮的数均分子量为500-10000。 The number of the developing roller according to claim 7, wherein the silicone resin skeleton is introduced into the average molecular weight of 500 to 10,000.
10.根据权利要求1所述的显影辊,其中该表面涂层的该聚氨酯树脂是通过将内酯改性的多元醇与多异氰酸酯交联而形成的丙烯酸氨基甲酸酯树脂。 10. The developing roller according to claim 1, wherein the surface coating of the polyurethane resin is an acrylic polyol is a lactone-modified polyisocyanate crosslinking urethane resin formed.
11.根据权利要求10所述的显影辊,其中该丙烯酸氨基甲酸酯树脂具有这样的结构: 将在其一端具有硅氧烷键和甲基丙烯酰氧基的硅酮引入丙烯酸部分。 11. The developing roller according to claim 10, wherein the acrylic urethane resin having such a structure: the silicones having a siloxane bond and a methacryloxy group is introduced into the acrylic portion at one end thereof.
12.根据权利要求10所述的显影辊,其中该丙烯酸氨基甲酸酯树脂具有将内酯改性的多元醇引入氨基甲酸酯部分的结构。 12. The developing roller according to claim 10, wherein the acrylic urethane resin having a lactone-modified polyol is introduced into the urethane part of the configuration.
13.根据权利要求1所述的显影辊,其中该表面涂层含有5-35质量份炭黑/100质量份该内酯改性的多元醇。 13. The developing roller according to claim 1, wherein the surface coating contains 5-35 parts by mass of carbon black / 100 parts by mass of the lactone-modified polyol.
14.根据权利要求1所述的显影辊,其中该表面涂层进一步含有导电剂。 14. The developing roller according to claim 1, wherein the surface coating layer further contain a conductive agent.
15.根据权利要求1所述的显影辊,其中该弹性层由通过采用机械搅拌使氨基甲酸酯起始原料发泡而获得的聚氨酯泡沫制成。 15. The developing roller according to claim 1, wherein the elastic layer is made of polyurethane foam by allowing urethane foam starting materials obtained by mechanical stirring.
16.根据权利要求15所述的显影辊,其中组成该弹性层的该聚氨酯泡沫具有闭孔。 16. The developing roller according to claim 15, wherein the polyurethane foam of the elastic composition layer having closed cells.
17.根据权利要求15所述的显影辊,其中在该作为弹性层的聚氨酯泡沫与该表面涂层之间形成由聚合物和含水溶剂的混合溶液制成的中间涂层。 17. The developing roller according to claim 15, wherein forming the intermediate coating made of a mixed aqueous solution of the polymer and solvent in the coating layer between the surface of the polyurethane foam as the elastic layer.
18.根据权利要求17所述的显影辊,其中该中间涂层由丙烯酸树脂、聚氨酯树脂或橡胶胶乳制成。 18. The developing roller according to claim 17, wherein the intermediate coating is an acrylic resin, urethane resin, or made of rubber latex.
19.根据权利要求17所述的显影辊,其中该中间涂层的玻璃转化温度不高于10°C。 19. The developing roller according to claim 17, wherein the intermediate coating layer glass transition temperature no greater than 10 ° C.
20.根据权利要求17所述的显影辊,其中该中间涂层由两层或多层组成。 20. The developing roller according to claim 17, wherein the intermediate coating is composed of two or more layers.
21.根据权利要求17所述的显影辊,其中该中间涂层进一步含有导电剂。 21. The developing roller according to claim 17, wherein the intermediate coating further comprises a conductive agent.
22.根据权利要求17所述的显影辊,其中该中间涂层和该表面涂层的总厚度不超过100 μ m0 22. The developing roller according to claim 17, wherein the total thickness of the intermediate coating and the surface coating does not exceed 100 μ m0
23.根据权利要求1所述的显影辊,其中该辊的10点平均表面粗糙度(Rz)不超过10 μ m。 23. The developing roller according to claim 1, wherein the roller surface 10-point average roughness (Rz) of not more than 10 μ m.
24. 一种成像装置,其特征在于包括根据权利要求1至23任一项所述的显影辊。 24. An image forming apparatus comprising a developing roller according to any one of claims 1 to 23.
CN 200610138136 2005-11-11 2006-11-10 Developing roller and imaging apparatus comprising the same CN1963685B (en)

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