Canon Kabushiki Kaisha

Fujitsu Corporation

Kunio Takada

Toshimori Miyakoshi

Kimio Takahashi

Nobumasa Suzuki

Kazuhiro Sando

Akio Koganei

Norihisa Saito

Kazuoki Hongu

Teruaki Okuda

Kiyoshi Sukegawa

Toshio Adachi

An object of the present invention is to prevent a device portion from being electrostatically charged with the use of the high resistivity film, and at the same time prevent a leak current passing the device portion due to an existing high resistivity film, in an electron source with the use of a surface-conduction electron-emitting device. This process for manufacturing the electron-emitting device comprises the steps of: forming an electroconductive thin filmastride device electrodes; forming the high resistivity filmin a region except the electroconductive thin filmand a perimeter thereof; subjecting the electroconductive thin filmto forming processing, to form a fissuretherein; and depositing a carbon filminside the fissureand in a region reaching the high resistivity filmfrom the edge of the fissure, by applying voltage between device electrodesandunder an atmosphere containing a carbon compound.

Electron emitting device having electroconductive thin film and high resistivity sheet

An electron source substrate including: a substrate; an electron-emitting device having a pair of device electrodes locating on the substrate and an electroconductive thin film which is provided between the device electrodes and has an electron-emitting region; and an antistatic film which is come into contact with at least the pair of device electrodes and covers over an exposed surface of the substrate, wherein a leakage current flowing between the device electrodes in a non-driving mode at a low voltage is suppressed. A high-impedance portion which obstructs the current caused across the pair of device electrodes through the antistatic film is provided in the antistatic film.

Electron source substrate with high-impedance portion, and image-forming apparatus

A process for producing an optical recording medium is disclosed which has a substrate and a recording film and an inorganic dielectric film, which are superposed on said substrate. The inorganic dielectric film is formed using a plasma processing device including a microwave guide means provided with an endless ring waveguide.

Process for producing an optical recording medium having a protective

In a system where the same alarm is held and displayed in different apparatuses, alarm information held in either an alarm detection apparatus or an alarm processing apparatus for a predetermined time is subjected to synchronization with respect to transmission (holding), the alarm information being displayed in a display/transfer part.

Synchronized alarm holding system

A magneto-optical disc has a resin substrate and a magneto-optical film. A birefringence distribution of the substrate in a static state is so set that a disc phase difference during rotation of the disc is eliminated.

Magneto-optical disc

The present invention relates to a process for manufacturing an optical recording medium comprising a substrate and a laminate of a recording film and an inorganic dielectric film thereon, and the optical recording medium. The process comprises forming the inorganic dielectric film by using a helicon wave plasma CVD method.

Method for manufacturing an optical recording medium

A product, such as an optical disk substrate, having a minute surface pattern and a central hole is suitably obtained by an injection molding, wherein a resin is injected into a cavity defined by a mold including a movable half and a fixed half. The movable half is provided with an ejector ring reciprocally movable in a mold opening-and-closing direction and a gate cutter reciprocally movable at two strokes in the mold opening-and-closing direction. After the resin is injected into the cavity to form a product accompanied with a gate, the gate cutter is moved at a first stroke to cut the gate. Then the mold is opened, and substantially simultaneously with commencement of the mold opening, the product is released from the stamper and the gate cutter is moved at a second stage stroke in a direction causing the release of the product from the stamper.

Process and apparatus for injection-molding product having minute

In a process for producing a substrate for optical disks, first a disk-shaped substrate is formed with polycarbonate with such gradient distribution of double refraction that the value of double refraction is in a range from -10 to -30 nm in the vicinity of the external periphery of the substrate and is in a range from +10 to +30 nm in the vicinity of the center thereof, and then thus formed substrate is annealed.

Process for producing substrate for optical disk by annealing substrate

A rotational polygon mirror and a method of manufacture thereof comprising a base member having a polygonal pole-like portion, the base member being formed of a relatively light-weight material which can be easily molded into a complicated shape, and a coating film which is provided on one or more side surfaces of the polygonal pole-like portion and on which a reflecting mirror surface is formed, the coating film being of at least one layer structure.

Growing community of inventors

Kawasaki, Japan

Kunio Takada