摘要:
The crystal of the invention is crystal of diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate which is stable substantially without decomposition or degradation of properties even when left to stand at room temperature for 1 year. The crystal of the invention can be prepared by a process comprising the steps of concentrating a solution containing diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate represented by the formula (2) wherein Ph is a phenyl group, diluting the concentrate with acetic ester and mixing the diluted solution with hexane or a solvent mixture of hexane and acetic ester to crystallize the diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate.
摘要:
A cleaning member has a core member that is freely rotatable, a cleaning material that is spirally wound around an outer peripheral surface of the core member, and holding members. The holding members hold end portions of the cleaning material by the end portions being nipped between the holding members and the outer peripheral surface of the core member. An opening is provided in each of the holding members. Each of the openings is continuously open in line with an axial direction of the core member, and the cleaning material is exposed from the openings.
摘要:
Image data of a document generated by a key business terminal or a key business server is sent to a database management server, and this image data and the description contents of the document represented by this image data are stored to a freight tracking information database base. Image data and data of the description contents of the document stored in the freight tracking information database are viewed or searched by an authenticated operator who operates a user terminal. Image data representing the progress of transport of goods is sent to the user terminal from the database management server according to the operator's instruction, and an image represented by this image data is displayed by the user terminal.
摘要:
A developing device including a developing roller and applicable to an electrophotographic image forming apparatus is disclosed. The developing roller is made up of a flexible member and a shaft and feeds toner to a latent image formed on a photoconductive element. A supply roller supplies the toner to the developing roller. A gap is formed between the flexible member and the shaft at at least one end portion of a printing region assigned to the developing roller. The gap sets up a uniform pressure between the supply roller and the developing roller and between the developing roller and the photoconductive element.
摘要:
A developing device comprises: a case having a developing opening; a cylindrical-shaped developer carry member disposed exposed in part to the developing opening, and rotatable for holding and carrying a developer; and a magnet member disposed fixed within the developer carry member and comprising two or more magnetic poles including a developing magnetic pole and a developer peel-off magnetic pole. In such portion of the case that not only is opposed to the outer peripheral surface of the developer carry member after it passes through the developing area but also corresponds to an area which extends from the developing magnetic pole in the rotation direction up to the developer peel-off magnetic pole and provides a normal direction magnetic flux density of 20 mT or less, a projecting portion where a clearance between its opposed portion and the outer peripheral surface of the developer carry member becomes narrowest is formed.
摘要:
A developing device comprises: a case having a developing opening; a cylindrical-shaped developer carry member disposed exposed in part to the developing opening, and rotatable for holding and carrying a developer; and a magnet member disposed fixed within the developer carry member and comprising two or more magnetic poles including a developing magnetic pole and a developer peel-off magnetic pole. In such portion of the case that not only is opposed to the outer peripheral surface of the developer carry member after it passes through the developing area but also corresponds to an area which extends from the developing magnetic pole in the rotation direction up to the developer peel-off magnetic pole and provides a normal direction magnetic flux density of 20 mT or less, a projecting portion where a clearance between its opposed portion and the outer peripheral surface of the developer carry member becomes narrowest is formed.
摘要:
Regulatory member having a groove formed therein is provided at area where toner storage chamber and toner stirring chamber are in communication with each other. A quantity of toner supplied from toner storage chamber to toner stirring chamber is regulated by rotating regulatory member. Groove is formed in regulatory member.
摘要:
A process for producing a diazomethane derivative by oxidizing a hydrazone derivative in a two-phase system containing: a) an aqueous solution of a mixture of a caustic alkali and an alkali metal hypochlorite in respective concentrations of 4-14 w/w % and 3-10 w/w % based on the total weight of the solution; b) a hydrophobic organic solvent; c) an inorganic iodine compound, and d) a phase-transfer catalyst.
摘要:
An electrophotograph development apparatus for developing an electrostatic latent image formed on an electrostatic latent image carrier body with magnetic developer includes a developer carrier body having a magnetic roller, and a thin layer forming member for forming the magnetic developer on the developer carrier body into a thin layer. A magnetic pole of the magnetic roller is disposed at a position of a &thgr; degree in an upper stream side relative to a rotational direction of the developer carrier body from a contact point of the thin film forming member and the developer carrier body, and &thgr; is in a range of 0 degree≦&thgr;≦10 degree. A relation between a surface roughness Rz′ of the developer carrier body and a surface roughness Rz of the thin layer forming member is represented by −10 &mgr;m≦(Rz-Rz′)≦5 &mgr;m.
摘要:
An image forming apparatus can effectively restrict a phenomenon to lower a charge amount of toner on a developing roller according to increasing of number of printing to stabilize supply of toner for a latent image carrier body and whereby to maintain good printing condition for a long period. The image forming apparatus includes a latent image carrier body, a developing roller supplying a toner to a latent image formed on the latent image carrier body, a toner supply roller supply the toner contacting the developing roller, a thin film forming member restricting a toner amount and a toner charge amount on the developing roller contacting with the developing roller, and power source means for supplying a bias to the toner supply roller and the thin film forming member in such a manner that a relationship between a voltage Vsr and a current Isr satisfies .vertline.Vsr.vertline./a+.vertline.Isr.vertline./b=1 (where a and b are constants of power source characteristics).
摘要翻译:图像形成装置可以有效地限制根据印刷次数的增加来降低显影辊上的调色剂的电荷量的现象,从而稳定潜像载体主体的调色剂的供给,从而长时间保持良好的打印条件。 图像形成装置包括潜像载体主体,向潜像载体上形成的潜像供给调色剂的显影辊,供给与显影辊接触的调色剂的调色剂供给辊,限制调色剂量的薄膜形成部件 以及与显影辊接触的显影辊上的调色剂带电量,以及用于以使电压Vsr与电流Isr之间的关系满足的方式向调色剂供应辊和薄膜形成部件提供偏压的电源装置 | Vsr | / a + | Isr | / b = 1(其中a和b是电源特性的常数)。