Toshiba Tec Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Other

Sunao Takenaka

Mitsutoshi Watanabe

Masahiro Ikuta

Koji Takahashi

Koichiro Sato

Yoshiki Kogiso

Kazufumi Ishida

Suguru Kurita

Takehiro Meguro

Takeshi Watanabe

Daisuke Yamashita

Koji Imamiya

Masato Ogasawara

Yuichi Yokoyama

Hirotaka Fukuyama

Masayuki Kasukawa

Masatoshi Hayashida

According to one embodiment, an image forming system includes a photoreceptor system, first and second detection system, a controller, and a determination system. The photoreceptor system having a rotational shaft in a longitudinal direction. The first detection system detects whether there is an abnormality on a surface of the cylindrical photoreceptor system at a first position. The second detection system detects whether there is the abnormality on the surface of the cylindrical photoreceptor system at a second position. The controller causes the second detection system to start detecting of the abnormality at a point in time after a waiting time. The determination system determines damage occurred at a surface position of the surface of the cylindrical photoreceptor system if the second detection system detects the abnormality at the surface position at which the first detection system detected the abnormality.

Damage detection image forming apparatus

According to an embodiment, an information processing apparatus includes a communication device and a processor. The processor collects information from a plurality of apparatuses via the communication device. The processor derives a formula on a basis of the collected information, the formula defining a relationship between a value about use of the component or the consumable item and a value about physical property of the component or the consumable item.

Information processing apparatus, information processing system, and image forming apparatus

According to one embodiment, an image forming apparatus includes a developing device, a temperature sensor, and a controller. The developing device includes a developing roller configured to develop an electrostatic latent image with a toner and is supplied with the toner from at least one toner cartridge having a storage medium configured to store temperature information regarding melting of a contained toner. The temperature sensor detects the ambient temperature of the atmosphere including the developing device. The controller is configured to drive the developing roller of the developing device based on the ambient temperature detected by the temperature sensor and the temperature information stored in the storage medium.

Image forming apparatus and image forming method

In accordance with an embodiment, an image forming apparatus comprises a printing setting acquisition section and a printer section. The printing setting acquisition section acquires printing setting information for holding setting at the time of printing for each kind of a sheet. The printer section applies, in a case in which a label paper is selected as the kind of the sheet, a developing agent in the vicinity of an area coming into contact with an end part of the sheet in an area on an image carrier for transferring the developing agent to the sheet, transfers the developing agent by a transfer member for transferring the developing agent from the image carrier to the sheet, and rotates the transfer member at least once.

A developing device includes a housing having an opening in a wall, a developing roller having a hollow interior portion, a magnetic pole structure disposed within the hollow interior portion of the roller, a gap forming member, and a blocking member. The gap forming member is located within, and spaced from, the housing at a location downstream, in the rotation direction of the developing roller, of the opening in the wall of the housing, forms a first gap with respect to the developing roller and forms a second gap with respect to the housing. The gap forming member has a first side facing the opening in the wall of the housing and a second side spaced inwardly of the housing, from the first wall. The blocking member is located in the first gap and at one of the first and second sides of the gap forming member.

Developing device with a gap forming member and image forming apparatus having the same

An image forming apparatus includes a developing unit, a transfer unit, a power source unit configured to supply a developing bias voltage to the developing unit and a transfer bias voltage to the transfer unit, and an input device to receive an image density evaluation. A processor adjusts the developing bias voltage when an evaluation input indicating a defect in the image density is received. If, after the first adjustment, another evaluation input indicating a defect in image density is received, the processor adjusts one of the developing bias voltage, the transfer bias voltage, or the toner density in the developing unit.

Image forming apparatus and adjustment method of image density

Certain embodiments provide a transfer apparatus, which including: an conductive intermediate transfer member; a transfer section configured to secondarily transfer a toner image onto an image receiving medium in a constant current system; a conveyance section configured to convey the image receiving medium; and a high voltage transformer configured to apply a bias to the transfer member, wherein the sum of the products of the volume resistivities [&#x3a9;&#xb7;cm] and the thicknesses [cm] of the intermediate transfer member and the transfer member is equal to or greater than 3.6&#xd7;10&#x3a9;&#xb7;cm, and the conveyance speed V[mm/s] of the image receiving medium={the output upper limit value A[V] of the absolute value of the voltage output from the transfer polarity side of the high voltage transformer}&#xd7;0.009.

Transfer apparatus and image forming apparatus

Image forming apparatus including a transfer roller cleaner and image forming method

According to one embodiment, a charger charges a surface of an image carrier by discharge in a wide-angle. A charging bias voltage application section applies a charging bias voltage to the charger. An exposing device forms an electrostatic latent image in a charged image carrier. A toner carrier causes toner to adhere to the electrostatic latent image formed in the image carrier. A developing bias voltage application section applies the developing bias voltage to the toner carrier. In addition, the developing bias voltage application section changes the charging bias voltage in one step and changes the developing bias voltage applied to the toner carrier in multiple steps.

Image forming apparatus and voltage applying method

An image forming apparatus according to an embodiment includes an image forming unit that forms a toner image on an image carrier body. A primary transfer member transfers the toner image formed on the image carrier body onto an intermediate transfer body. A secondary transfer member transfers the toner image from the intermediate transfer body onto a recording medium. A control unit applies a cleaning bias to the secondary transfer member while an idle operation of the secondary transfer member is being performed before the toner image is secondarily transferred onto the transferring target material.

Image forming apparatus

A developer according to an embodiment includes a toner having a color erasable by heating and a carrier. The carrier includes a core portion and a coating portion covering at least 50% of the core portion. The coating portion includes a white-colored additive agent which suppresses an increase in electrification due to friction between the toner and the carrier, a mass of the additive agent being between 20% and 60% of a total mass of the coating portion.

Growing community of inventors

Odawara Kanagawa, Japan

Sunao Takenaka