Canon Kabushiki Kaisha

Nobuhiro Imai

Tatsuya Kobayashi

Takehiko Kiyohara

Akira Ito

Kaoru Seto

Hisayoshi Kojima

Haruo Fujii

Masao Umezawa

Motoi Katoh

Junji Ichikawa

Fumio Asano

Daisuke Murata

Hideki Tada

Tadashi Ochiai

Hideaki Sato

Michio Ito

Katsumi Masaki

Kazuhiro Hirayama

Yukimasa Shinohara

Masaaki Ishii

Kimio Kono

Kazuo Hoshito

Koichi Kadokura

Kimio Kohno

An image forming apparatus usable with a process cartridge for forming an image on a recording material. The process cartridge includes an image bearing member, and at least one developing device for developing a latent image formed on the image bearing member with a developer. Each of said at least one developing devices includes a developer accommodating device for accommodating a respective developer to be used in said at least one developing device. The image forming apparatus includes a mounting device for mounting the process cartridge, an auxiliary developing device exterior to the process cartridge for developing a latent image formed on the image bearing member with a developer, the auxiliary developing device including an auxiliary developer accommodating device for accommodating the developer to be used in the auxiliary developing device, and a detecting device for detecting a respective predetermined level of developer in the auxiliary developer accommodating device and in each of the respective developer accommodating devices of said at least one developing device.

Image forming apparatus having toner depletion detection feature

An image forming apparatus includes a detachably mountable process cartridge, the process cartridge including an image bearing member and a color developing device actable on the image bearing member, the color developing device containing plural developing units having yellow developer, respectively; detachably mountable developing device actable on the image bearing member in the process cartridge, the detachably mountable developing device containing black developer and being detachably mountable independently of the process cartridge; and a device for forming a latent image on the image bearing member; a transfer device for transferring a developed image from the image bearing member to a recording material.

Image forming apparatus

The present invention provides an image forming apparatus comprising recording electrodes to which voltage for recording is applied, a sheet-shaped recording medium arranged in confronting relation to the recording electrodes, a driving source for driving the recording medium, a toner accommodating container arranged transversely to a direction to which the recording medium is moved, toner conveying means to supplying toner between the recording electrodes and the recording medium, and power source means for driving the image forming apparatus. In the image forming apparatus, the power source means is arranged below the toner accommodating container to obtain a high quality image.

The image-forming apparatus comprises a first frame, a recording electrode with an image formation voltage applied thereto, a belt-like recording medium disposed facing the charging electrode and toner transporting means for supplying toner to a space between said recording electrode and recording medium. For the positioning of the belt-like recording medium with respect to the charging electrode, a second frame for movably supporting the recording medium is provided together with the recording electrode in the first frame. An recording medium feed member is urged against the second frame at a predetermined position thereof. Thus, the recording electrode and recording medium can be positioned relative to each other without need of any particular adjustment whenever the recording medium is replaced.

Image-forming apparatus

An image forming apparatus which employs a recording method that uses electrically conductive developer, and a developing device for use in the image forming apparatus. A magnetic field is generated in an area having a width larger than that of a group of electrodes at the position of the electrode group so as to prevent the developer which has been passed over the electrodes from flowing outside of an image area at the downstream side of the group of electrodes.

Image forming apparatus and developing device thereof

A scanning optical system in which a light beam is moved by a movable deflector to scan a surface to be scanned is provided with a filter disposed between the movable deflector and the surface to be scanned. The filter is concavely shaped toward the movable deflector.

Scanning optical system

A recording apparatus including a beam generator for generating a beam modulated by a modulating signal supplied thereto; a deflector for deflecting the beam generated by the beam generator repeatedly in two directions; a recording member for receiving the beam deflected by the deflector and recording the trajectory of irradiation by the beam; a recording information storage for storing information to be recorded on the recording member; the recording information read from the information storage being supplied to the beam generator as the modulating signal; a beam detector provided in the deflecting area of the beam deflected by the deflector and adapted to release a beam detection signal upon detection of arrival of the deflected beam at the detector; and a signal forming device adapted for selecting either one of two consecutive beam detection signals released from the beam detector thereby forming a reference signal for instructing the initiation of the readout from the recording information storage.

Recording apparatus

A laser recording apparatus includes a laser optical unit having an integral combination of a laser for emitting a laser beam and an optical system for converting the laser beam into an expanded and collimated beam; a deflector unit for directly receiving the laser beam emergent from the laser optical unit and directing the laser beam toward a recording medium; a photoreceptor unit having an integral combination of a reflecting member for reflecting the laser beam deflected by the deflector unit and a photoreceptor for receiving the laser beam reflected by the reflecting member; a support member having standard portions respectively for mounting the laser optical unit, the deflector unit and the photoreceptor unit.

Laser recording apparatus

An optic axis adjusting mirror device used with a system in which a light beam such as a laser beam or the like is used and modulated by information signals and caused to scan a medium by a scanning optical system. The device includes an adjuster capable of freely adjusting the angle at which the mirror is mounted to vary the direction of reflection of the light beam as it impinges on the mirror, and detecting jigs for detecting the position of the light beam as it impinges on the mirror and for detecting whether or not the optic axis lies at a predetermined position. The device contributes to highly accurate beam scanning.

Growing community of inventors

Kawasaki, Japan

Nobuhiro Imai