Abstract: A powder material recovery container includes: a container main body that accommodates a powder material; a conveying member that is arranged with a part existing at least in an intermediate position of a dropping movement of the powder material and rotates to convey it, the conveying member having a conveying part that conveys the powder material around a central line of rotation; and a moving passage surface arranged in a lower part of the part existing at least in the intermediate position, and opposed to one part of the conveying member and move it by a conveying force, wherein the moving passage surface has upper end parts of side surfaces opposed to each other with respect to the central line that are formed with relatively different heights, and the relatively lower upper end part is formed with height not higher than a height of the central line.

Abstract: A discharger includes a discharger main body that is adapted to be attached to and detached from a holding member of an image forming apparatus, a first electrode member that is formed of a wire rod, a second electrode member, a voltage for discharge being applied between the first and second electrode members, an electrode cleaning member that cleans the first electrode member, a detected portion that is integrally disposed to the electrode cleaning member, a detecting member that detects the detected portion while the electrode cleaning member is in a predetermined reference position, a cleaning member conveyer that conveys the electrode cleaning member in both directions which toward and away from the reference position, and a movement control unit that controls a movement of the cleaning member conveyer by the conveyer.

Abstract: An image forming apparatus includes a photosensitive member, a charging device, a developing device, a thickness detecting unit and a parameter setting unit. A photosensitive layer is formed on a surface of the photosensitive member. The charging device charges the photosensitive member. The developing device forms a toner image on the surface of the photosensitive member. The thickness detecting unit detects a thickness of the photosensitive layer on a basis of a value of a current supplied to the charging device. When the thickness detecting unit detects the thickness of the photosensitive layer, the parameter setting unit sets at least one of a charge parameter for the charging device and a development parameter to be different from that used in forming an image on a recording medium by transferring a toner image formed on the surface of the photosensitive member onto the recording medium.

Abstract: An image forming apparatus includes a photosensitive member, a charging device, a developing device, a thickness detecting unit and a parameter setting unit. A photosensitive layer is formed on a surface of the photosensitive member. The charging device charges the photosensitive member. The developing device forms a toner image on the surface of the photosensitive member. The thickness detecting unit detects a thickness of the photosensitive layer on a basis of a value of a current supplied to the charging device. When the thickness detecting unit detects the thickness of the photosensitive layer, the parameter setting unit sets at least one of a charge parameter for the charging device and a development parameter to be different from that used in forming an image on a recording medium by transferring a toner image formed on the surface of the photosensitive member onto the recording medium.

Abstract: An image forming apparatus includes a photosensitive member, a charging device, a developing device, a thickness detecting unit and a parameter setting unit. A photosensitive layer is formed on a surface of the photosensitive member. The charging device charges the photosensitive member. The developing device forms a toner image on the surface of the photosensitive member. The thickness detecting unit detects a thickness of the photosensitive layer on a basis of a value of a current supplied to the charging device. When the thickness detecting unit detects the thickness of the photosensitive layer, the parameter setting unit sets at least one of a charge parameter for the charging device and a development parameter to be different from that used in forming an image on a recording medium by transferring a toner image formed on the surface of the photosensitive member onto the recording medium.

Abstract: A powder material recovery container includes: a container main body that accommodates a powder material; a conveying member that is arranged with a part existing at least in an intermediate position of a dropping movement of the powder material and rotates to convey it, the conveying member having a conveying part that conveys the powder material around a central line of rotation; and a moving passage surface arranged in a lower part of the part existing at least in the intermediate position, and opposed to one part of the conveying member and move it by a conveying force, wherein the moving passage surface has upper end parts of side surfaces opposed to each other with respect to the central line that are formed with relatively different heights, and the relatively lower upper end part is formed with height not higher than a height of the central line.

Abstract: In a control method for a twin synchronization in which two motors for driving two axes (moving elements 3) mechanically fastened to each other by a fastening part (a fastening jig 6) are synchronously operated, one of the two axes is operated at low speed by a position control and the other axis is allowed to freely run and follow the one axis and a return to the origin is performed. A positional deviation between the one axis and the other axis is measured at an arbitrary pitch. The positional deviation corresponding to a position where the one axis travels is stored in a data base as a function. One position command is directly distributed to the one axis as a main position command and the position command is distributed to the other axis as a position command corrected by using the function stored in the data base to perform an operation.

Abstract: An image forming apparatus includes a photosensitive member, a charging device, a developing device, a thickness detecting unit and a parameter setting unit. A photosensitive layer is formed on a surface of the photosensitive member. The charging device charges the photosensitive member. The developing device forms a toner image on the surface of the photosensitive member. The thickness detecting unit detects a thickness of the photosensitive layer on a basis of a value of a current supplied to the charging device. When the thickness detecting unit detects the thickness of the photosensitive layer, the parameter setting unit sets at least one of a charge parameter for the charging device and a development parameter to be different from that used in forming an image on a recording medium by transferring a toner image formed on the surface of the photosensitive member onto the recording medium.

Abstract: It is an object of the present invention to provide a twin synchronization method that can easily realize a high speed and highly accurate operation for a machine having a gantry type structure. According to the present invention, in a control method for a twin synchronization in which two motors for driving two axes (moving elements 3) mechanically fastened to each other by a fastening part (a fastening jig 6) are synchronously operated, one of the two axes is operated at low speed by a position control and the other axis is allowed to freely run and follow the one axis and a return to the origin is performed. A positional deviation between the one axis and the other axis is measured at an arbitrary pitch. The positional deviation corresponding to a position where the one axis travels is stored in a data base as a function.

Abstract: A servo system controller in which motor specification data inputted through a CRT/keyboard (1) and representing the characteristics of a motor is edited into electronic cam data by a data editing section (22), the edited data is displayed in the form of a table or graph, such as a cam diagram, on a data display section (25), and the electronic cam data converted into the one of a format enabling cam motion is generated by a machine drive section and stored, comprising input data calculating means (26) for calculating the acceleration/deceleration peak torques and the rotational speed of a motor for every block of the electronic cam data, a motor specification data table (28) stored with the known motor specification data, and input judging means (27) for displaying the result of the comparison of the output of the input data calculating section (26) with the motor specification data for every block on a display section.

Abstract: An elongated prestressing steel material for use in the fabrication of prestressed concrete comprises a steel member and an outer coat of many microcapsules each containing a flowable material in its interior.

Abstract: A prestressing steel material for use with concrete that is prestressed by posttensioning is disclosed. Said steel material is unbonded from the concrete. The prestressing steel material is composed of a steel member sheathed with a foamed synthetic resin tube. The wall thickness of the synthetic resin tube is at least 300 microns, more preferably, more than 500 microns. In the case that the steel member is a strand composed of a plurality of twisted steel wires, the spiral grooves of the strand are first filled with a resin and the strand together with the resin sheathed with the foamed synthetic resin tube.

Abstract: Prestressing steel materials are disclosed for use with concrete that is prestressed by posttensioning, said steel material being unbonded from the concrete. The steel materials are composed of steel members sheathed with a heat-shrinkable synthetic resin tube. Preferably, the wall thickness of the resin tube is at least 300 microns. In the case of a steel strand composed of a plurality of twisted steel wires, spiral grooves of the strand are filled with a resin and then the strand and resin are sheathed with a heat-shrinkable synthetic resin tube.