摘要:
Polymer supported metal complex catalysts and methods of their preparation and use are described. The polymer supported metal complex catalysts can be obtained via ligand exchange reactions between polymer ligands and a metal complex having catalytic activity. For example, a polymer supported rhodium (II) complex catalyst can be prepared via ligand exchange reaction between an insoluble polymer and a rhodium (II) carboxylate complex, wherein the insoluble polymer is prepared by a copolymerization reaction of (i) a styrene derivative with a substituted carboxylic acid, (ii) a styrene, and (iii) a linear alkane with both ends substituted by vinylbenzyloxy groups. The polymer supported catalysts can be used to catalyze asymmetric carbene reactions such as C—H insertion reactions and the like with high catalytic activity, chemical selectivity, diastereoselectivity, and enantioselectivity.
摘要:
The present invention relates to a polymer-supported rhodium (II) catalyst and its application, which includes addition reaction to carbon-carbon multiple bond in α-diazocarbonyl compounds, insertion reaction to C—H and X—H (X═N, O, S, Se, Si and the like) bonds, or rearrangement and additional cyclization reaction thereofA novel insoluble polymer-supported rhodium (II) complex was prepared through a ligand exchange reaction between an insoluble polymer and a rhodium (II) carboxylato complex, wherein the insoluble polymer was prepared by a copolymerization reaction of (i) a styrene derivative with substituted carboxylic acid, (ii) a stylene, and (iii) a linear alkane with both ends substituted by vinylbenzyloxy groups,Namely, a polymer-supported metal complex catalyst having the following chemical formula 1: wherein M1 and M2 are rhodium, and the like; and X is an oxygen atom, etc; and R4 is an alkyl group, and the like; and k is 1 to 15%, m is 1 to 5% relative to k+l+m, and l is the remainder; and n is 4 and others; and R1 is alkyl-2-(4′-alkyloxy phthalimido methyl), etc, R2 is phenyl, etc; R3 is 4,4′-(1,3-propyrene-1,3-dioxymethyl)phenyl, etc.
摘要:
An image forming apparatus including a conveyance unit to convey a transfer medium, a first image forming unit to form a monochrome image transferred at a first transfer position onto the transfer medium, and a second image forming unit disposed downstream from the first image forming unit in a direction of conveyance of the transfer medium, including an intermediate transfer body to form a multi-colored toner image on the intermediate transfer body. The multi-colored toner image is transferred onto the transfer medium at a second transfer position. The conveyance unit is separated from the intermediate transfer body at the second transfer position in a monochrome mode to form the monochrome image using only the first image forming unit, and contacts the intermediate transfer body at the second transfer position in a full-color mode to form a full-color image using both the first and second image forming units.
摘要:
An image forming apparatus, including a fixing liquid applicator applying a fixing liquid including a plasticizer swelling and softening a toner forming a toner image to fix on a recording medium thereto before bearing the toner image; a transferer transferring the toner image on a toner image bearer onto the recording medium while contacting the toner image to the fixing liquid thereon; and a fixing device heating the toner image and the fixing liquid to fix the toner image thereon, wherein the fixing liquid applicator comprises an application member bearing the fixing liquid on its surface and apply the liquid on a surface of the recording medium the toner image is transferred onto; a feeder feeding the fixing liquid to the application member; and an inducement mechanism inducing the fixing liquid pooling at a delivery point where the feeder feeds the fixing liquid to the application member out of the point.
摘要:
By using a black-image forming device, an abrasive pattern is formed on a sheet conveying belt so that toner is input to a contact section where a cleaning blade is in contact with the sheet conveying belt. After the toner is input to the contact section where the cleaning blade is in contact with the sheet conveying belt and then the sheet conveying belt makes one or more revolutions, a process control is performed in which Y, M, and C toner patterns and B toner pattern are transferred onto the sheet conveying belt.
摘要:
The invention refers to a composition comprising a liquid crystal material and an additive, preferably a dopant capable of forming a complex with said LC material, to a liquid crystal cell comprising this composition, uses thereof and to a method of improving the response time of a liquid crystal.
摘要:
A conductive member, including a long conductive supporting body, an electrical resistance adjusting layer, disposed on the outer circumferential surface of the conductive supporting body and having a reduced diameter section at either end, and a pair of gap maintaining members which are respectively fitted onto said reduced diameter sections of the electrical resistance adjusting layer. The outer circumferential surfaces of the gap maintaining members have a height differential with respect to the outer circumferential surface of the electrical resistance adjusting layer, in such a manner that when abutted against an image carrier, a prescribed gap is formed between the outer circumferential surface of the image carrier and the outer circumferential surface of the electrical resistance adjusting layer. An interval between the end faces of the electrical resistance adjusting layer and the faces of the gap maintaining members opposing the end faces satisfies a predetermined relationship.
摘要:
A novel development device includes a developer roller, a developer reservoir, a rotatable conveyor, and a replenisher unit. The developer roller is configured to supply toner particles to the electrostatic latent image. The developer reservoir is configured to hold the developer therewithin for application to the developer roller. The rotatable conveyor is configured to rotate within the developer reservoir to convey the developer toward the developer roller. The replenisher unit has a tubular member terminating at a port opening in the developer reservoir. The replenisher unit is configured to direct a particulate material through the tubular member into the developer reservoir via the port. The particulate material is toner particles, carrier particles, or a mixture of toner particles and a given amount of carrier particles. The port is submerged in the developer within the developer reservoir as the rotatable conveyor rotates.
摘要:
A transfer device is provided for an image forming apparatus designed such that toner images formed on a plurality of image bearing members are transferred one over another on a transfer body disposed in contact with each of the image bearing members with predetermined pressure and thus a toner image in two or more colors is formed on the transfer body. The transfer device includes a pressure varying mechanism which is capable of separating the transfer body from at least some of the image bearing members, and capable of varying transfer pressure between the image bearing members and the transfer body in contact with said image bearing members.
摘要:
A conductive member forming a charging roller having high durability which maintains a stable gap with respect to an abutting member, comprising a long conductive supporting body, an electrical resistance adjusting layer, and gap maintaining members, wherein, taking X2 to be the thickness of the portions of the gap maintaining members which oppose the end faces of the electrical resistance adjusting layer, the relationship 1 mm≦X2≦3 mm is satisfied, taking X3 to be the interval between the end faces of the electrical resistance adjusting layer and the gap maintaining members which oppose these end faces, the relationship 0.1≦X3≦1 mm is satisfied, and taking X4 to be the interval from the faces of the gap maintaining members opposing the end faces of the electrical resistance adjusting layer, to the step difference faces of the reduced diameter sections of the electrical resistance adjusting layer, then X4 is 5 mm or greater, and is shorter than the length from the faces of the gap maintaining members which oppose the end faces of the electrical resistance adjusting layer to the positions on the electrical resistance adjusting layer opposing the end sections which correspond to the image forming region of the photosensitive body.
摘要翻译:一种导电构件,其形成具有高耐久性的充电辊,其相对于邻接构件保持稳定的间隙,包括长导电支撑体,电阻调节层和间隙保持构件,其中,X 2, SUB>为与电阻调节层的端面相对的间隙保持构件的部分的厚度,满足关系1 mm <= X 2 <= 3 mm,取X 3 <3>为电阻调节层的端面与与这些端面相对的间隙保持构件之间的间隔,关系式0.1 <= X 3 <= 1 mm,并且将X 4从与电阻调节层的端面相对的间隙保持部件的表面的距离设定为与电阻调节层的端面相对的直径部分的台阶差面 电阻调节层,则X 4是5mm或 并且比从与电阻调节层的端面相对的间隙保持构件的面相对于与感光体的图像形成区域对应的端部的电阻调节层的位置的长度短 身体。