Toshiba Tec Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Yoshiki Kogiso

Takehiro Meguro

Koji Takahashi

Sunao Takenaka

Koichiro Sato

Kazufumi Ishida

Suguru Kurita

Yoshiaki Okano

Satoshi Itaya

An image forming apparatus includes a photoconductor, a charger, a ventilation mechanism, an exposure device, a developing device, a transfer device, and a controller. The ventilation mechanism guides ozone generated in the charger to an ozone discharge port. The exposure device forms an electrostatic latent image on the photoconductor charged by the charger. The transfer device transfers a toner image on the photoconductor developed by the developer supplied from the developing device to a medium. The controller allows the ventilation mechanism to discharge the ozone generated in the charger from the ozone discharge port after stopping supply of the developer from the developing device to the photoconductor in an operation mode in which the ozone is discharged.

Image forming apparatus with ozone removal

According to one embodiment, an image forming apparatus includes a forming unit, a communication unit, a reader/writer unit, a reader unit, and a determination unit. If the forming unit executes the image formation on the print medium, the reader/writer unit is configured to execute, using the communication unit, an operation of writing data into a wireless tag attached to the print medium on which the image formation is to be executed or an operation of reading data from the wireless tag. If the image formation that is accompanied by the operation of writing data or the operation of reading data by the reader/writer unit is not executed, the reader unit is configured to read an identifier of a user from a wireless tag that stores the identifier using the communication unit if communication between the wireless tag and the communication unit is enabled. The determination unit is configured to determine that the user approaches the image forming apparatus if the identifier read by the reader unit satisfies a predetermined condition.

Image forming apparatus, system, and method that changes output intensity or received threshold based on an image forming operation

An image forming apparatus includes a communication device configured to communicate with a wireless tag of a sheet, an image forming mechanism configured to form an image and transfer the image to the sheet according to a control value, and a controller configured to: receive a job for printing an image on a sheet and performing tag processing on the tag, control the communication device to perform the tag processing on the tag, determine whether the processing has completed properly, upon determining that the processing has completed properly, control the image forming mechanism to form the image and transfer the image to the sheet according to a first control value, and upon determining that the processing has not completed properly, control the image forming mechanism to form the image and transfer the image to the sheet according to a second control value.

Image forming apparatus

An image forming apparatus includes a photoreceptor, a charger, an exposure device, a developing device, a transfer device, a power supply, a detection element, and a processor. The processor sets a transfer bias used in image forming processing based on the resistance value calculated using the value of the transfer bias supplied by the power supply, a measured value measured by the detection element, and the potential of the photoreceptor estimated from the charging potential at which the charger charges the photoreceptor if the measured value is measured, and determines the state of the photoreceptor based on a change in the surface potential of the photoreceptor if the charger changes the charging potential for charging the photoreceptor.

Image forming apparatus and image forming system

A security management apparatus includes a receiver, a printer, and a notifier. The receiver acquires, at an entrance of a facility, information about a visitor to a visiting destination of the facility. The information includes a stay permitted time at the visiting destination and at least one of an attribute, relation information, or a visiting purpose. The printer generates a portable medium that includes the information and the stay permitted time and records an image allowing distinguishing of content of the information. The notifier is configured to receive the stay permitted time from one or more readers disposed at the facility and is configured to read the stay permitted time from the portable medium in a noncontact manner. The notifier, in response to the stay permitted time being elapsed, warns the visitor who passes a disposition position of the one or more readers.

Security management apparatus

Image forming apparatus having ozone removal

According to one embodiment, a belt positioning structure includes a belt roller around which an endless belt is wound. The belt comprises a belt-side positioning component curbing position aberration from the belt roller in a roller shaft direction. The belt roller comprises a roller-side positioning component curbing position aberration of the belt in a belt shaft direction. The roller-side positioning component comprises a regulation plate formed along a virtual tapered surface that has a diameter on one side in the roller shaft direction larger than a diameter on an opposite side of the regulation plate. The regulation plate comprises a movement regulation component that regulates movement of the belt-side positioning component to the one side of the belt-side positioning component in the roller shaft direction and strengthens a movement regulation force to the one side of the belt-side positioning component in the roller shaft direction.

Belt positioning structure, belt roller unit, and image forming apparatus

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

According to an embodiment, an image forming system comprises a terminal device and an image forming apparatus. The image forming apparatus is provided with an image forming section, a transfer section and a transfer bias applying section. The image forming section forms a toner image on a transfer belt. The transfer section transfers the toner image onto a medium. The transfer bias applying section applies transfer bias voltage to the transfer section. The terminal device is provided with a request receiving section and a bias voltage determination section. The request receiving section receives a print request of printing the image on at least one card arranged on a cardboard as media. The bias voltage determination section determines the transfer bias voltage according to the print request.

Image forming system and image forming apparatus

A fixer includes a fixing belt configured to move around a center, a heating unit configured to induction-heat the fixing belt, a pressing member that presses an outer surface of the fixing belt, a resilient member disposed opposite to the pressing member across the fixing belt, and a heat generating member that is capable of being induction-heated and disposed along the inner surface of the fixing belt between a first position and a second position that is downstream with respect to the first position in a moving direction of the fixing belt. An upstream end portion of the resilient member in the moving direction is in contact with a third position of the fixing belt, and an angle formed with respect to the center by the second and third positions is equal to or smaller than 60&#xb0;.

Growing community of inventors

Mishima Shizuoka, Japan

Yoshiki Kogiso