Abstract: A method of very inexpensively and stably producing a solid body having a depressed portion on a surface, which is expected to be applied in a variety of industrial fields. This method forms a solid body having a depressed portion on a surface by using a solution at least containing a solvent A, a solvent B and a polymer compound soluble in solvent B, solvent A being a hydrophilic solvent and solvent B being a hydrophobic solvent, the boiling point of solvent A being equal to or higher than the boiling point of solvent B, and the total mass of solvent B being 50% or more of the total mass of the solvents contained in the solution, then solidifying the solution while forming a depressed portion from condensation on the surface of the solution during a process wherein either one or both of the solvent A and solvent B contained in the solution are evaporating.

Abstract: A production method of an electrophotographic photosensitive member which has high productivity when producing a surface layer in which depressed portions which are independent respectively are formed on an electrophotographic photosensitive member surface, and can produce highly uniform depressed portions in a photosensitive member surface, characterized by producing the surface layer by (1) a coating step of producing a coating liquid for a surface layer containing a binder resin and a specific solvent, and coating it on a surface of a cylindrical supporting member, (2) a condensation step of holding the cylindrical supporting member on which the coating liquid for a surface layer is coated, and condensing the surface of the cylindrical supporting member, and (3) a drying step of baking the cylindrical supporting member.

Abstract: An electrophotographic photosensitive member has a surface having a plurality of depressed portions, having a major-axis diameter Rpc of 0.1 to 10 ?m, a minor-axis diameter Lpc of 0.1 to 10 ?m and a deepest-part to opening distance Rdv of 0.1 to 10 ?m. Where the surface is equally divided into 4 regions in the rotational direction, which are then equally divided into 25 regions in the direction falling at right angles with the rotational direction, to obtain 100-spot regions A in total, and, in each thereof, square regions B of 50 ?m each per side one side of which is parallel to the rotational direction are provided and the regions B are each equally divided into 500 zones by straight lines parallel to the rotational direction, 400 to 499 lines among the straight lines pass through the depressed portions in each of the regions B.

Abstract: An electrophotographic photosensitive member is disclosed which is excellent in cleaning performance, has improved durability, and suppresses image defects in various environments. The electrophotographic photosensitive member has a support and a photosensitive layer provided on the support. Depressed portions independent of one another are formed on the surface of the electrophotographic photosensitive member so that the number of the depressed portions per 100 ?m square is 76 or more and 1,000 or less. The openings of the depressed portions have an average major axis diameter of more than 3.0 ?m and 14.0 ?m or less.

Abstract: A vibratory gyroscope including a vibrator (10) integrally having a plate-like body portion (11) spreading along a reference plane, three drive arms (12, 13, 14) extending in a first direction from the body portion along the reference plane, and two detection arms (15, 16) extending in a second direction opposite to the first direction from the body portion along the reference plane. The three drive arms are composed of two exciting drive arms (12, 13) that are excited in mutually opposite phases in the reference plane and a non-exciting drive arm (14) located between the two exciting drive arms. Each of the three drive arms has an arm width in a width direction along the reference plane and perpendicular to the first direction. Each of the two detection arms has an arm width greater than that of the drive arm in the width direction, thereby suppressing generation of vibrations along the reference plane.

Abstract: The present invention provides a cooling apparatus which is easy to build and to fix it to electronic devices, superior in thermal conduction and heat dissipation, and possible to make thin the total configuration of the apparatus. The liquid cooling unit 9 and the air cooling unit 12 are formed in a unit. A heat absorption surface 19 of the liquid cooling unit 9 is contacted or bonded to the heat generation component such as the CPU and the heat generator, which have the largest power consumption and also locally generate heat within a small area in the box 2. In the liquid cooling unit 9, a liquid cooling pump 14 composed of an electromagnetic pump is arranged for circulating the coolant in the flow path 10. The heat generated by the heat generation components such as CPU 6, heat generator 7, and the like is thermally diffused with heat conduction into the whole liquid cooling unit 9 by circulating the coolant with the liquid cooling pump 14.

Abstract: An electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus are provided which not only secure mechanical strength sufficiently but also bring a vast improvement in charge transport performance and which can well satisfy electrical properties. An electrophotographic photosensitive member is provided an outermost surface layer of which contains at least a charge transporting compound having chain polymerizable functional groups which is represented by the following general formula (1-1) or (1-2); the charge transporting compound having been polymerized or cross-linked and cured. Also provided are a process cartridge and an electrophotographic apparatus which have such a photosensitive member.

Abstract: A sound-proof wall made of FRP in the form of a sound-proof wall panel that includes a core and skin members made of FRP positioned on both sides of the core and whose weight per nit area is within the range of 10-60 kg/m2; and a method of producing the same. This sound-proof wall, though light in weight, has a superior sound insulation property and will never corrode because it is made of FRP. Further, it has a high degree of freedom of engineering design including sound-proof property, design, and shape, capable of producing a desired sound-proof wall with case. Further, since it has a high specific strength, it is possible to attain a drastic weight reduction while retaining the necessary strength, and facilitate working, shorten construction time, and reduce construction cost.

Abstract: An electrophotographic photosensitive member has, on the surface of its photosensitive layer, has a plurality of depressed portions which are independent from one another, and, where the major-axis diameter of each depressed portion is represented by Rpc and the depth that shows the distance between the deepest part of each depressed portion and the opening thereof is represented by Rdv, the depressed portions each have a ratio of depth to major-axis diameter, Rdv/Rpc, of from more than 1.0 to 7.0 or less.

Abstract: A process for producing an electrophotographic photosensitive member, which has the step of bringing i) the surface of an electrophotographic photosensitive member having at least a charge transport layer on a cylindrical support and ii) a mold having a fine unevenness surface profile into pressure contact with each other to transfer the fine unevenness surface profile to the surface of the electrophotographic photosensitive member. The mold and the support are so temperature-controlled as to be T3<T1<T2 where the glass transition temperature of the charge transport layer is represented by T1 (° C.), the temperature of the mold by T2 (° C.), and the temperature of the support by T3 (° C.).

Abstract: An image forming method is disclosed having a charging step, an exposure step, a developing step and a transfer step. This method uses a toner which includes toner particles containing a binder resin and a colorant, and inorganic fine powder, and uses a photosensitive member which has on its surface depressed portions which are independent of one another. The depressed portions have openings having an average minor-axis diameter Lpc satisfying the relationship of Dg<Lpc<Dt (Dt represents the weight-average particle diameter of the toner, and Dg represents the maximum number-average particle diameter among number-average particle diameter(s) of one or two or more types of inorganic fine powder constituting the inorganic fine powder, and the toner has an average circularity of from 0.925 to 0.995.

Abstract: An electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus are provided which not only secure mechanical strength sufficiently but also bring a vast improvement in charge transport performance and which can well satisfy electrical properties. An electrophotographic photosensitive member is provided an outermost surface layer of which contains at least a charge transporting compound having chain polymerizable functional groups which is represented by the following general formula (1-1) or (1-2); the charge transporting compound having been polymerized or cross-linked and cured. Also provided are a process cartridge and an electrophotographic apparatus which have such a photosensitive member.

Abstract: A six-legged type piezoelectric vibration gyroscope having a pair of exciting arms extending from a body (2) in a first direction (A1) with a space therebetween, one non-exciting arm (3c) extending in the first direction between the exciting arms from the body, a pair of detecting arms (4a, 4b) extending from the body in a second direction (A2) with a space therebetween, and one non-detecting arm (4c) extending in the second direction between the detecting arms from the body. The exciting arms are coupled with a drive-side electrode. The detecting arms are coupled with a detection-side electrode. The exciting arms, non-exciting arm, detecting arms, and non-detecting arm respectively consist of a piezoelectric. The respective exciting arms differ in width size from the non-exciting arm. The respective exciting arms differ in width size from the respective detecting arms. The respective exciting arms differ in width size from the non-detecting arm.

Abstract: A diaphragm pump enabling an increase in pump efficiency by reducing the pressure loss of liquid and reduction in thickness. The flow passage in piezoelectric pump (1) includes a pressure chamber (50) formed into a flat shape in cross section and a suction side flow passage (70a) and discharge side flow passage (70b). The suction side flow passage (70a) and the discharge side flow passage (70b) are disposed at both ends of the pressure chamber (50) so that the axes thereof are aligned with each other. The check valves (20a, 20b) are respectively disposed on the suction side flow passage (70a) and the discharge side flow passage (70b), and are tilted relative to the flow direction of the liquid.

Abstract: [Object] A cooling device for a thin electronic equipment having a larger heat radiation area and preventing leakage of refrigerant. [Means for Solving Problems] A cooling device includes first and second cooling panels (1, 2) wherein a passage (11, 21) is formed by bonding together a top heat radiation panel and a bottom heat radiation panel each having a groove therein, and a circulation pump (3) for circulating refrigerant within the passage (11, 21). In the top heat radiation panel of the second cooling panel (2) are formed an outlet port through which the refrigerant flows out from the passage (21) to the circulation pump (3) and an inlet port through which the refrigerant flows in from the circulation pump (3) to the passage (21). The circulation pump (3) is fixed onto the top heat radiation plate of the cooling panel (2) so that the suction port and discharge port are aligned with the outlet port and inlet port, respectively.

Abstract: A six-legged type piezoelectric vibration gyroscope having a pair of exciting arms extending from a body (2) in a first direction (A1) with a space therebetween, one non-exciting arm (3c) extending in the first direction between the exciting arms from the body, a pair of detecting arms (4a, 4b) extending from the body in a second direction (A2) with a space therebetween, and one non-detecting arm (4c) extending in the second direction between the detecting arms from the body. The exciting arms are coupled with a drive-side electrode. The detecting arms are coupled with a detection-side electrode. The exciting arms, non-exciting arm, detecting arms, and non-detecting arm respectively consist of a piezoelectric. The respective exciting arms differ in width size from the non-exciting arm. The respective exciting arms differ in width size from the respective detecting arms. The respective exciting arms differ in width size from the non-detecting arm.

Abstract: A cooling device includes a cooling panel wherein a passage is formed by bonding together a bottom heat radiation plate having a groove formed therein and a top heat radiation plate, and a circulation pump circulating refrigerant within the passage. The top heat radiation plate is provided with an outlet port through which the refrigerant flows out from the passage to the circulation pump and an inlet port through which the refrigerant flows in from the circulation pump to the passage. The circulation pump is fixed onto the top heat radiation plate of the cooling panel so that the suction port and discharge port are aligned with the outlet port and inlet port, respectively.

Abstract: The present invention provides a cooling apparatus which is easy to build and to fix it to electronic devices, superior in thermal conduction and heat dissipation, and possible to make thin the total configuration of the apparatus. The liquid cooling unit 9 and the air cooling unit 12 are formed in a unit. A heat absorption surface 19 of the liquid cooling unit 9 is contacted or bonded to the heat generation component such as the CPU and the heat generator, which have the largest power consumption and also locally generate heat within a small area in the box 2. In the liquid cooling unit 9, a liquid cooling pump 14 composed of an electromagnetic pump is arranged for circulating the coolant in the flow path 10. The heat generated by the heat generation components such as CPU 6, heat generator 7, and the like is thermally diffused with heat conduction into the whole liquid cooling unit 9 by circulating the coolant with the liquid cooling pump 14.

Abstract: A sound-proof wall made of FRP in the form of a sound-proof wall panel that comprises a core and skin members made of FRP positioned on both sides of the core and whose weight per nit area is within the range of 10-60 kg/m2; and a method of producing the same. This sound-proof wall, though light in weight, has a superior sound insulation property and will never corrode because it is made of FRP. Further, it has a high degree of freedom of engineering design including sound-proof property, design, and shape, capable of producing a desired sound-proof wall with case. Further, since it has a high specific strength, it is possible to attain a drastic weight reduction while retaining the necessary strength, and facilitate working, shorten construction time, and reduce construction cost.

Abstract: An ink jet printer head and a piezoelectric actuator for the head, in which energy conversion efficiency from an electric energy to a mechanical vibration energy is high, and its mechanical displacement of a vibration transferring plate is large, are provided. An ink jet printer head having a piezoelectric actuator provides an upper electrode, a piezoelectric plate, a lower electrode, a vibration transferring plate, and a pressure chamber, whose shape is a rectangle and its length ratio of the short side to the long side is 0.8 or more and 1.0 or less. And the piezoelectric plate having the lower electrode is bonded to the vibration transferring plate at a position within the inside wall of the pressure chamber and the center positions of the piezoelectric plate and the pressure chamber are set to be almost equal. Therefore, the energy conversion efficiency of the piezoelectric plate can be utilized in its maximum, and the piezoelectric actuator whose mechanical displacement is large can be realized.