摘要:
A cleaning system for an electrostatic copying apparatus has a cleaning roller in pressure contact with a toner supporting member for removing residual toner therefrom. The cleaning roller is impressed with a bias voltage of polarity opposite to the electric charge held by the residual toner. The cleaning roller comprises an axle, a conductive elastic layer around the axle, and a thin porous film formed as an outer most layer over the elastic layer. The thin film is preferably made of polytetrafluorethylene and is a porous and soft film. The cleaning system also includes a discharging electrode arranged before the cleaning roller, and a scraper for removing toner adhering to the cleaning roller.
摘要:
An expansion shaft includes a first and a second shaft section aligned on the same axis. The second shaft section is inserted in a fit hole of the first shaft section while both the shaft sections are interconnected via a spline or serration. A resilient member is provided which possesses a single snap ring of C-shape fitted on a thin shaft portion of the second shaft section. An arm is axially extended from the snap ring. The arm resiliently presses against an inner circumferential surface of the fit hole for preventing the shaft sections from radially vibrating relative to each other.
摘要:
A recording apparatus wherein a bottom of a body of the apparatus having conveyor device for conveying recording paper is freely opened and closed to open the conveyor device when the body is lifted up. A body frame composed of a front panel, a rear panel and a bottom plate of the recording apparatus is molded by a resin as a unit.
摘要:
A method for cutting a surface of a base of a photoreceptor for electrophotography is disclosed. The method comprises steps of:(a) supplying an aqueous cutting fluid to the surface of the photoreceptor base;(b) cutting the surface of the photoreceptor base by a cutting tool comprising a single crystal diamond.
摘要:
A cutting apparatus for finishing a surface of a substrate of a photoreceptor drum of an image forming apparatus estimates a finish state of the surface on real time with the finishing. The cutting apparatus has a detector to detect a cutting force to a cutting tool from the surface in finishing, a memory to store a cutting force pattern to distinguish the finish state of the surface, comparator means to compare the detected cutting force with the stored cutting force pattern and judging means to judge the finish state of the surface along with the progress of the cutting process.
摘要:
A polygon mirror is produced using a diamond tool. The diamond tool includes a major cutting edge and an end cutting edge. The major cutting edge is formed straight by a rake face and a side flank, the major cutting edge having a first side and a second side. The end cutting edge is formed straight by the rake face and a front flank, the end cutting edge having a third side. A microscopic cutting edge is arranged between the second side and the third side so that the major cutting edge and the microscopic cutting edge together create a first corner at the second side, and the end cutting edge and the microscopic cutting edge create a second corner at the third side. The rake face is inclined downward from the second corner to the first side. The microscopic cutting edge is between 0.1 mm and 0.4 mm in a direction of the end cutting edge. The microscopic cutting edge at the first corner is swept back by an amount between 0.21 .mu.m and 0.6 .mu.m from an extended line of the end cutting edge in a direction perpendicular to the extended line. The material being operated on by the diamond cutting tool is held and fed relatively to the diamond tool so that the material is cut with the major cutting edge, is thereafter microscopically cut with the microscope cutting edge, and is thereafter burnish-finished with the end cutting edge.
摘要:
A toner collecting device for collecting residual toner removed from an image retainer by a cleaning device after a toner image formed in the image retainer has been transferred to a sheet of paper. The toner collecting device has therein a conveyor device for carrying the residual toner. The conveyor device has its leading end portion disposed at a central portion of the toner collecting device. The upper surface of the toner collecting device has functions to guide transfer paper and to support a transfer electrode, and the leading end portion of the conveyor device is provided with a toner distributing diffusion blade member.
摘要:
A toner collecting device for collecting residual toner removed from an image retainer by a cleaning device after a toner image formed on the image retainer has been transferred to a sheet of paper. The toner collecting device has therein a conveyor device for carrying the residual toner. The conveyor device has its leading end portion disposed at a central portion of the toner collecting device. The upper surface of the toner collecting device has functions to guide transfer paper and to support a transfer electrode, and the leading end portion of the conveyor device is provided with a toner distributing diffusion blade member.
摘要:
A formation method of an element isolation film according to which a high-voltage transistor with an excellent characteristic can be formed is provided. On a substrate, a gate oxide film is previously formed. A CMP stopper film is formed thereon, and thereafter, a gate oxide film and a CMP stopper film are etched. The semiconductor substrate is etched to form a trench. Further, before the trench is filled with a field insulating film, a liner insulating film is formed at a trench interior wall, and a concave portion at the side surface of the gate oxide film under the CMP stopper film is filled with the liner insulating film. In this manner, formation of void in the element isolation film laterally positioned with respect to the gate oxide film can be prevented.
摘要:
A formation method of an element isolation film according to which a high-voltage transistor with an excellent characteristic can be formed is provided. On a substrate, a gate oxide film is previously formed. A CMP stopper film is formed thereon, and thereafter, a gate oxide film and a CMP stopper film are etched. The semiconductor substrate is etched to form a trench. Further, before the trench is filled with a field insulating film, a liner insulating film is formed at a trench interior wall, and a concave portion at the side surface of the gate oxide film under the CMP stopper film is filled with the liner insulating film. In this manner, formation of void in the element isolation film laterally positioned with respect to the gate oxide film can be prevented.