Toshiba Tec Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Other

Satoshi Itaya

Takahito Kabai

Kei Onishi

Mitsuhisa Kato

Noboru Furuyama

Yoshiaki Okano

Hirotaka Fukuyama

Hiroshi Katakura

Yoshiki Kogiso

Setsuo Takada

Yukio Futamata

Taizo Nozawa

Tomoyuki Kato

An image forming apparatus includes a forming unit, a storage unit, a correction unit, a measurement unit, and a changing unit. The forming unit forms an image. The storage unit stores correction data for correcting density irregularity in each of a plurality of regions obtained through division in a main scanning direction of the image formed by the forming unit. The correction unit corrects a density of the image formed by the forming unit for each of the plurality of regions based on the correction data stored in the storage unit. The measurement unit measures an image formation density by the forming unit in association with the correction by the correction unit. The changing unit changes the image formation density by the forming unit with a uniform change amount in the plurality of regions so that the image formation density measured by the measurement unit approaches a predetermined target density.

Image forming apparatus with improved image density

An image forming apparatus includes an operation panel including a display, a belt through which an image formed thereon is transferred to a sheet, a head configured to form an image on the belt, and a controller configured to control the head to form an image on the belt according to operation settings. The controller is configured to, upon receipt of an instruction to execute a first job, determine whether the job includes forming an image, upon determining that the first job includes forming an image, determine whether a first condition for executing an adjustment operation to adjust the settings is satisfied, upon determining that the first condition is satisfied, control the display to display a screen through which execution of the adjustment operation and a timing thereof can be selected, and execute the first job and/or the adjustment operation based on a selection made through the screen.

Image forming apparatus

According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.

Image forming apparatus and image forming method that accounts for deterioration of a developer

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;.

Fixer that forms a nip with an induction-heated belt and an image forming apparatus having the same

An embodiment provides an image forming apparatus including: a job acquiring unit that acquires an image forming job that gives instructions for performing forming of an image; an image forming process control unit that controls performance of the image forming job that the job acquiring unit acquires; a temperature information acquiring unit that acquires information showing temperature of the heating rotary body; a determining unit that determines whether the temperature of the heating rotary body which is acquired by the temperature information acquiring unit is equal to or higher than a predetermined stand-by temperature set as a temperature in a stand-by state that stands by to perform the image forming process, when the image forming process is completed, based on the image forming job by the image forming process control unit; and a fixing device control unit.

Image forming apparatus, control method, and recording medium

A suction duct that sucks air is provided downstream from a magnet roller that applies a developer to a photoconductor while rotating, in a direction of rotation of the photoconductor, and upstream of a surface potential sensor that measures surface potential of the photoconductor. Moreover, ribs for adjusting an air flow are arranged within the suction duct in such a manner that a width of an air flow passage formed by a rear end in a direction of air flow and a forward end of a nearest rib in the direction of air flow is narrowed from a rib installed upstream in the direction of air flow toward a rib installed downstream. The collection duct collects a floating developer by using a negative pressure.

Developing unit, image forming apparatus, and floating developer collecting method for developing unit

An image-forming apparatus includes a rotary developing device including a casing having absolute value of the surface potential of not larger than 300 V.

Image forming apparatus and method for forming image

Image forming apparatus having a rotary developing device with plural developing units

An image forming apparatus disclosed herein includes a detecting section for detecting that the lifetime of an expendable used to form images is expiring, a counting section for counting a used amount of the expendable when the detecting section detects that the lifetime of the expendable is expiring, and a control section for disregarding the fact that the lifetime of the expendable is expiring, even when the fact is detected again before the used amount of the expendable, which is counted by the counting section, reaches a prescribed value.

Image forming apparatus which monitors lifetimes of expendables

An image forming apparatus includes a recording paper conveyor, a photosensitive drum, a charger, an exposure, a developer with toner, a transfer, and a cleaner. A process unit has the photosensitive drum and the cleaner in which a blade scrapes a residual toner from the drum, a paddle rotates to move the toner from the drum, and a scraper scraping the toner carried by the arm by its free end which is disposed radially outwardly and near to a rotation locus drawn by a radially directional outer end of an arm of the paddle during a rotation of the paddle.

Growing community of inventors

Mishima, Japan

Satoshi Itaya