Oki Data Corporation

Sony Corporation

Alps Electric Co., Ltd.

Oki Data Corporatio

Yasuhiro Suda

Yasuo Osada

Hirofumi Nakajima

Hiroshi Ishida

Hiromu Watanabe

Akihisa Inatani

Hisanobu Okawa

Yutaka Shimada

Hideki Kamimura

Toshimasa Takahashi

Shuji Koseki

Yuji Sudo

An image formation apparatus according to one or more embodiment may include: image formation parts each including a developer image development part, a developer container that accommodates a developer, and a deteriorated developer container that accommodates a deteriorated developer discharged from the developer image development part; a collection part that collects a value based on a history of printing rates of each of the image formation parts; a printing rate calculator that calculates a printing rate of a received print data; and an image formation part selector that selects, based on the value based on the history of printing rates of each of the image formation parts collected by the collection part and the printing rate of the received printed data calculated by the printing rate calculator, one of the image formation parts, to be used for performing printing of the received print data.

Image formation apparatus and image formation part selection method

In a pressure detection device which is provided in an intake pressure measurement apparatus, a detection space surrounded by an outer wall portion is formed in a housing, and an inner wall portion is formed integrally in the detection space such that both end portions are connected to the outer wall portion. The inner wall portion has a cylindrical shape, and a sensor storage portion is formed between the inner wall portion and the outer wall portion. In the sensor storage portion, a pressure sensor is disposed in a region with the least influence of thermal stress at a position closer to the inner wall portion than the outer wall portion.

Pressure detection device and intake pressure measurement apparatus using the same

A process cartridge includes a toner reservoir. A first controller calculates a consumed amount of toner based on image data. A toner bottle is attached to the process cartridge. The toner bottle includes a toner chamber that holds the toner therein and supplies the toner into the reservoir. The toner bottle includes a first memory holding first information on a first amount of toner in the toner chamber and first identification information on the toner bottle. A second memory holds second information on a second amount of toner in the reservoir and second identification information on the toner bottle. If the first and second identification information do not coincide, it is determined that the toner bottle has been replaced and then the first information and the second information are updated based on the first information, the second information, and a capacity of the toner chamber.

Image forming apparatus with replaceable developer holder

An image forming apparatus is supplied capable of adopting low price structure to obtain information that is stored in a storing section and is used for analyzing reason of failure/repair. The image forming apparatus performs an image formation by using an exchanging unit having a mounting section to mount an unit information store use memory and stores unit information including use status of the exchanging unit into the unit information store use memory, and comprises a history information storing section in which history information of the image forming apparatus is stored; an apparatus information store use memory which is mounted onto the mounting section to replace the unit information store use memory; a judging section which judges which of the unit information store use memory and the apparatus information store use memory is mounted in the mounting section; and a store controlling section which controls the apparatus information store use memory to store the history information in the case that the apparatus information store use memory is judged being mounted.

Image forming apparatus

A disk centering system includes: a disk mount portion having a disk mount surface on which a disk form recording medium is to be mounted, the disk mount portion being provided with a predetermined reference point; and at least three disk centering portions for pressing the outer circumferential edge of the disk form recording medium, the disk centering portions being located in radial directions with the reference point as a center, wherein each of the disk centering portions can be moved between a centering position at which the disk centering portion makes contact with the outer circumferential edge of the disk form recording medium mounted on the disk mount surface to thereby center the disk form recording medium and a stand-by position located on the outer side relative to the centering position, and the centering positions are located at an equal distance from the reference point in the radial directions with the reference point as a center.

Disk centering system

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Tokyo, Japan

Yasuhiro Suda