Minolta Camera Kabushiki Kaisha

Kanji Wada

Keiji Nakatani

Kenji Shibazaki

Kadotaro Nishimori

Yoshihisa Kawai

Kaoru Hashimoto

Yoshikazu Naito

Akio Kato

Masahiro Higaki

Makoto Sekiya

An image recording apparatus comprises a laser light source for generating a primary beam for scanning and a secondary beam for monitoring the light amount thereof which has a photodiode for detecting the light amount of the secondary beam. The output signal of the photodiode obtained when only the secondary beam is incident on the photodiode is distinguished from the output signal of the photodiode obtained when the secondary beam and the primary beam having been reflected from a deflecting surface are incident at the same time on the photodiode in order to output a start of scan signal for every one scan line at a moment when the primary beam and the secondary beam are incident at the same time on the photodiode.

Image recording apparatus with improved SOS detection

When a data control portion receives a request for change of a pixel density, a cycle used as a reference cycle for detecting abnormality in a laser beam is changed corresponding to the pixel density. While a rotating speed of a polygon mirror for changing the density of picture element is not constant, emission of the laser beam is forbidden and detection as to abnormality in the laser beam is not effected. A mark for detection of an image density is formed on a photoreceptor where the laser beam is scanned, and outside an area where the image is to be formed. The formation of the detection mark is forbidden while the pixel density is being changed. On the other hand, when the detection mark is being formed, output of an instruction for changing the pixel density is deferred. In addition, emission of the laser beam is forbidden while the pixel density is being changed.

Laser printer capable of changing a pixel density

A multi-functional imaging apparatus being operable in either one of various office automation modes such as copy mode, facsimile mode, printer mode and the like is disclosed. The multi-functional imaging apparatus is comprised of an image reading section, an image forming section and a communication section for transmitting and receiving image data. Plural card-like memory elements are provided for designating individual office automation modes. When a desirable card-like memory element is set into the imaging apparatus, the apparatus becomes operable in an office automation mode corresponding to the inserted memory element.

Multi-functional imaging apparatus

A copying apparatus having the capability to write optional pattern information on a copy sheet. The apparatus comprises an original glass plate, a photosensitive drum, plural devices for forming copied image of the original document on the photosensitive drum, an editor 900 for inputting arbitrary coordinates data, an eraser including an LED array, a control circuit for controlling the eraser in accordance with the input data, and a transfer device for transferring the copied image and the pattern image on the same surface of copy sheet.

Copy apparatus with pattern writing capability

An integral document processing apparatus comprising an electrophotographic copying system and a facsimile transmission system. A document fed from a common document storing unit is guided selectively to a first document read unit included in the electrophotographic copying system or to a second document read unit included in the facsimile transmission system by a document feed passage changeover mechanism which is operated selectively by an operator. A document delivered to the first document read unit is copied by the electrophotographic copying system. A document delivered to the second document read unit is converted into a corresponding electric image signal, and then the electric image signal is applied to a communications line.

Integral document processing apparatus equipped with an image forming

A control device for use in controlling various information relating to an apparatus which can be operated in response to the instructions fed from the control device. The control device is provided with a memory device for storing information relating to the operation of the apparatus and is operable by mounting a memory medium in which coded information in relation to the user of the apparatus are registered. The control device comprises a key input board operable by the user for inputting a specific coded signal, apparatus for causing the input coded signal to be registered in the memory medium and apparatus for enabling the apparatus in response to the registration of the coded signal in the memory medium.

Control device for an apparatus

The present invention relates to a control system for a copying machine that permits the copying machine to be started by the insertion of manually fed copying paper. The copying machine can further operate with an automatic document feeder that is also operated in conjunction with the manual feeding of copying paper.

Growing community of inventors

Toyokawa, Japan

Kanji Wada