Konica Corporation

Masataka Inagi

Toyotsugu Itoh

Takayoshi Hashimoto

Sunao Kawada

Masao Itoh

Shinichi Kawano

Akira Ohira

Yoshio Iwamura

A method for cutting a surface of a base of a photoreceptor for electrophotography is disclosed. The method comprises steps of:

Method for surface processing of a photoreceptor base for

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.

Cutting apparatus

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.

Method for producing a polygon mirror

In machining a substrate surface of a photoreceptor by the use of a cutting machine which supplies cutting lubricant from a reservoir to a cutting tool of the cutting machine, the method comprises a measurement of a cutting tool temperature by a sensor and a control of both the temperature of cutting lubricant and a flow rate thereof. The control is responsive to the cutting tool temperature and suppresses a temperature fluctuation of the cutting tool.

Method of surface machining for substrate of electrophotographic

A method of surface-processing a photoreceptor base including aluminum material for electrophotography on a lathe, in which a surface of the base is cut by a cutting tool having a sintered polycrystalline diamond body while cutting fluid, composed of water, an aqueous solution of a surface-active agent or an aqueous solution of a water-soluble organic solvent, is being supplied to the surface of the base frame.

Growing community of inventors

Hachioji, Japan

Masataka Inagi