Abstract: Provided is a kneading rotor, a batch kneader and a method of kneading materials capable of obtaining kneaded materials with higher quality in comparison to conventional kneaded materials when the materials to be kneaded are kneaded in a high temperature state. The kneading rotor comprises a rotor portion which is disposed in a kneading chamber of a chamber of a batch kneader, and applies shear force, by using a plurality of kneading blades, to materials to be kneaded which pass through a tip clearance. A first long blade of the plurality of kneading blades has an apex for forming, with the inner surface of the chamber forming the kneading chamber, three-staged tip clearances of different sizes configured from a combination of a large tip clearance, a mid tip clearance that is smaller than the large tip clearance, and a small tip clearance that is smaller than the mid tip clearance so as to be arranged in the longitudinal direction of the first long blade.

Abstract: A kneading rotor, in which the length L4 of a long blade in the direction of rotation of a rotor section is greater than one half of the total length L5 of a rotor section main body in the direction of rotation, and the long blades are arranged in such a manner that, in a case where a pair of the rotor sections are arranged mutually in parallel inside the chamber of the closed kneading machine and are rotated in mutually opposite directions, an end section on the rearward side in the direction of rotation of the rotor section, of the long blade of one of the rotor sections, and an end section on the forward side in the direction of rotation of the rotor section, of the long blade of the other one of the rotor sections, alternately repeat mutually an approaching action and a separating action, and in the state of approach, the end section on the forward side and the end section on the rearward side oppose each other in the direction of rotation of the rotor sections on a line which links the respective central

Abstract: A kneading rotor, in which the length L4 of a long blade in the direction of rotation of a rotor section is greater than one half of the total length L5 of a rotor section main body in the direction of rotation, and the long blades are arranged in such a manner that, in a case where a pair of the rotor sections are arranged mutually in parallel inside the chamber of the closed kneading machine and are rotated in mutually opposite directions, an end section on the rearward side in the direction of rotation of the rotor section, of the long blade of one of the rotor sections, and an end section on the forward side in the direction of rotation of the rotor section, of the long blade of the other one of the rotor sections, alternately repeat mutually an approaching action and a separating action, and in the state of approach, the end section on the forward side and the end section on the rearward side oppose each other in the direction of rotation of the rotor sections on a line which links the respective central

Abstract: A solid state image capturing apparatus is disclosed. A pixel array section has unit pixels containing photoelectric conversion elements, the unit pixels being two-dimensionally arranged in a matrix, and column signal wires correspondingly to columns of the matrix of the unit pixels. A line scanning section selectively controls lines of the matrix of the unit pixels of the pixel array section. An analog-to-digital conversion section converts an analog signal outputted from unit pixels of a line of the matrix of the unit pixels selected by the line scanning section through a corresponding column signal line to a digital signal. A conversion clock supply section selectively generates a conversion clock having a first clock period or a second clock period. An addition section adds unit pixel digital signals converted in the analog-to-digital conversion section by the conversion clocks having the first clock period and the second clock period, respectively.

Abstract: Provided is a kneading rotor, a batch kneader and a method of kneading materials capable of obtaining kneaded materials with higher quality in comparison to conventional kneaded materials when the materials to be kneaded are kneaded in a high temperature state. The kneading rotor comprises a rotor portion which is disposed in a kneading chamber of a chamber of a batch kneader, and applies shear force, by using a plurality of kneading blades, to materials to be kneaded which pass through a tip clearance. A first long blade of the plurality of kneading blades has an apex for forming, with the inner surface of the chamber forming the kneading chamber, three-staged tip clearances of different sizes configured from a combination of a large tip clearance, a mid tip clearance that is smaller than the large tip clearance, and a small tip clearance that is smaller than the mid tip clearance so as to be arranged in the longitudinal direction of the first long blade.

Abstract: A plurality of mixing rotors that are housed in a chamber having a cocoon-shaped cross section in a tangential non-intermeshing state, where a plurality of long wings and short wings are provided on a wing portion of the mixing rotors. The long wings and the short wings severally have a plurality of different sizes of tip clearances, a twist angle of the long wings is changed in the axis direction, and makes mixing efficiency and dispersion efficiency compatible. Further, cooling medium paths are provided severally in the chamber and the mixing rotors to suppress excessive increase of the temperature of mixing materials. According to a batch mixer using the mixing rotors, it is possible to control quality reduction of the mixing materials caused by heat generation, and to improve the productivity by increasing the number of the wings without diminishing inherent processing performance of the mixer.

Abstract: A solid state image capturing apparatus is disclosed. A pixel array section has unit pixels containing photoelectric conversion elements, the unit pixels being two-dimensionally arranged in a matrix, and column signal wires correspondingly to columns of the matrix of the unit pixels. A line scanning section selectively controls lines of the matrix of the unit pixels of the pixel array section. An analog-to-digital conversion section converts an analog signal outputted from unit pixels of a line of the matrix of the unit pixels selected by the line scanning section through a corresponding column signal line to a digital signal. A conversion clock supply section selectively generates a conversion clock having a first clock period or a second clock period. An addition section adds unit pixel digital signals converted in the analog-to-digital conversion section by the conversion clocks having the first clock period and the second clock period, respectively.

Abstract: Electrolytic solution which contains sulfuric acid and is stored in an electrolytic solution storage 2 of a case 3 is caused to be retained in an electrolytic solution retainer 25. A reference electrode 18 and a counter electrode 19 are printed on the underside of the electrolytic solution retainer 25. The reference electrode 18, the counter electrode 19, and the electrolytic solution retainer 25 are thus formed into a single component, with the reference electrode 18 and the counter electrode 19 being formed simultaneously. Electrode pins 32,33,34 are brought into contact with the reference electrode 18, the counter electrode 19, and a detection electrode 17. The electrode pins 32,33,34 are made of tantalum. A contact portion 32b,33b,34b and a lead portion 32a,33a,34a of each electrode pin 32,33,34 are formed as a seamless, integral body.

Abstract: A polishing pad used for precise polishing of the surface of a lapped glass workpiece when a glass substrate for use in data recording media is manufactured from a glass workpiece. The polishing pad comprises a base and a polishing portion laminated on the base and contacting the surface of the glass workpiece at the time of polishing. The polishing portion is formed of a foam made of a synthetic resin having a 100% modulus of 11.8 MPa or less. A type of parameter representing the surface roughness of the polishing portion, namely, the maximum height (Rmax), is 70 ?m or less.

Abstract: A plurality of mixing rotors that are housed in a chamber having a cocoon-shaped cross section in a tangential non-intermeshing state, where a plurality of long wings and short wings are provided on a wing portion of the mixing rotors. The long wings and the short wings severally have a plurality of different sizes of tip clearances, a twist angle of the long wings is changed in the axis direction, and makes mixing efficiency and dispersion efficiency compatible. Further, cooling medium paths are provided severally in the chamber and the mixing rotors to suppress excessive increase of the temperature of mixing materials. According to a batch mixer using the mixing rotors, it is possible to control quality reduction of the mixing materials caused by heat generation, and to improve the productivity by increasing the number of the wings without diminishing inherent processing performance of the mixer.

Abstract: A polishing pad used for precise polishing of the surface of a lapped glass workpiece when a glass substrate for use in data recording media is manufactured from a glass workpiece. The polishing pad comprises a base and a polishing portion laminated on the base and contacting the surface of the glass workpiece at the time of polishing. The polishing portion is formed of a foam made of a synthetic resin having a 100% modulus of 11.8 MPa or less. A type of parameter representing the surface roughness of the polishing portion, namely, the maximum height (Rmax), is 70 ?m or less.

Abstract: A polishing pad used for precise polishing of the surface of a lapped glass workpiece when a glass substrate for use in data recording media is manufactured from a glass workpiece. The polishing pad comprises a base and a polishing portion laminated on the base and contacting the surface of the glass workpiece at the time of polishing. The polishing portion is formed of a foam made of a synthetic resin having a 100% modulus of 11.8 MPa or less. A type of parameter representing the surface roughness of the polishing portion, namely, the maximum height (Rmax), is 70 ?m or less.

Abstract: A polishing pad used for precise polishing of the surface of a lapped glass workpiece when a glass substrate for use in data recording media is manufactured from a glass workpiece. The polishing pad comprises a base and a polishing portion laminated on the base and contacting the surface of the glass workpiece at the time of polishing. The polishing portion is formed of a foam made of a synthetic resin having a 100% modulus of 11.8 MPa or less. A type of parameter representing the surface roughness of the polishing portion, namely, the maximum height (Rmax), is 70 &mgr;m or less.

Abstract: There is provided a method of polishing a glass substrate for information recording media which enables polishing to be carried out such that the product quality is improved, without the productivity dropping, and without the processing cost increasing. A precision polishing step has a first polishing step and a second polishing step carried out in this order, in which, after carrying out rough polishing on major surfaces of a glass substrate, precision polishing is carried out on the major surfaces by feeding abrasive grains onto the major surfaces, pushing polishing members against the major surfaces, and rotating the major surfaces and the polishing members relative to one another. At least one of the first polishing step and the second polishing step has a preceding polishing step and a succeeding polishing step carried out in this order.

Abstract: Electrolytic solution which contains sulfuric acid and is stored in an electrolytic solution storage 2 of a case 3 is caused to be retained in an electrolytic solution retainer 25. A reference electrode 18 and a counter electrode 19 are printed on the underside of the electrolytic solution retainer 25. The reference electrode 18, the counter electrode 19, and the electrolytic solution retainer 25 are thus formed into a single component, with the reference electrode 18 and the counter electrode 19 being formed simultaneously. Electrode pins 32,33,34 are brought into contact with the reference electrode 18, the counter electrode 19, and a detection electrode 17. The electrode pins 32,33,34 are made of tantalum. A contact portion 32b,33b,34b and a lead portion 32a,33a,34a of each electrode pin 32,33,34 are formed as a seamless, integral body.

Abstract: There is provided a method of polishing a glass substrate for information recording media which enables polishing to be carried out such that the product quality is improved, without the productivity dropping, and without the processing cost increasing. A precision polishing step has a first polishing step and a second polishing step carried out in this order, in which, after carrying out rough polishing on major surfaces of a glass substrate, precision polishing is carried out on the major surfaces by feeding abrasive grains onto the major surfaces, pushing polishing members against the major surfaces, and rotating the major surfaces and the polishing members relative to one another. At least one of the first polishing step and the second polishing step has a preceding polishing step and a succeeding polishing step carried out in this order.

Abstract: An extruder that can control the temperature on the whole screw including the flight and avoid an extruded material form adhering on a surface of the screw, has a center hole with its front end closed formed in the center of the screw core, and an inner tube inserted in the center hole from the base end side of the center hole. The front end of the inner tube opens at a position corresponding to the base end of the flight. A ring seal member occludes a space between a front outer surface of the inner tuber and the corresponding inner surface of the center hole. Thus, a main channel of a dual tube is formed which has an outward channel inside the inner tube and an inward channel outside the inner tube. On the other hand, on the back side of the flight, a jacket-form spiral channel is formed along the whole backside. The front end and the rear end of the spiral channel each communicate with the outward channel and inward channel of the main channel, respectively, through radial communicating holes.

Abstract: To prevent an extruding material from moving in and between an extruder body and a contact surface of side guides and to provide automation of adjustment of a sheet width. A roller head extruder in which a pair of calendar rolls 8 are disposed forwardly of a material extruding opening 4 of an extruder body 1, a pair of left and right side guides 9 are disposed so that a material extruded from said extruding opening 4 is molded into a sheet form by the calendar rolls 8, wherein said side guides 9 can be automatically moved in a direction of the sheet width by a moving cylinder 19 and secured to the front surface of a flange portion 5 of the extruder body 1 by a fastening force releasable fastening means. The fastening force is added by a spring 15 and the fastening force is released by a jack 18. The fastening force urges the side guides 9 against the extruder body 1 so that no extruding material flows between the side guides 9 and the extruder body 1.

Abstract: A roller head extruder unit includes an extruder unit, a pair of calender rollers arranged forward of an exit opening of the extruder unit and supported for rotation by a support frame mounted securely with respect to the extruder unit, and side guides arranged on either side of a space between the exit opening of the extruder unit and the calender rollers to thereby define a bank into which material for rolling is extruded. At least one of the upper and lower rollers is mounted for rotation in a roller housing supported by the support frame for limited movement in a direction perpendicular to the axis of the upper and lower rollers. The roller head extruder unit also includes a detection device for detecting the force with which this roller housing is caused to move as a result of accumulation of material in the bank.

Abstract: In a cone type twin screw extruder, two rotor shafts are disposed in such a manner as to approach one another in the direction towards the leading edge, and to be rotatable. An interlocking device is provided on the side of the base portions of the rotor shafts for interlockingly connecting the rotor shafts with each other. The interlocking device has a pair of reduction gear devices disposed on the base portion sides of the rotor shafts, and the reduction gear is constituted of a spur gear train or a planetary gear train. High speed shafts of the reduction gears are interlockingly connected with bevel gear devices, and one shaft of the bevel gear device forms a connecting shaft projecting from the other bevel gear device side. Further, a pair of the connecting shafts are interlockingly connected with each other by a coupling device.