Fuji Xerox Co., Ltd.

Matsuyuki Aoki

Satoshi Tanaka

Naoya Yamasaki

Shunichiro Shishikura

Takashi Sato

Kenjo Nagata

Yasunori Unagida

Toru Iwanami

Makoto Hamatsu

Hiroshi Ono

Akira Ishii

Yoshio Inoue

Shuji Tanaka

Yoshiki Matsuzaki

Nobukazu Takahashi

Shigeru Tsukada

Shun Yashima

Gen Nakajima

Kohei Shioya

Shoji Yamauchi

Hiroaki Kumai

Hideki Kashimura

An image defect predictive diagnostic apparatus includes an acquisition unit and a notification unit. The acquisition unit acquires first characteristic values and second characteristic values from an image forming apparatus that forms an image by using an electrophotographic process. The first characteristic values include at least one of (i) toner concentrations and (ii) developing potentials. The first characteristic values have an influence on developability. The second characteristic values are different from the first characteristic values. The notification unit predicts occurrence of a dot image which has no relationship with the image by using the first characteristic values and the second characteristic values which are acquired by the acquisition unit, and that makes notification.

Image defect predictive diagnostic apparatus, image defect predictive diagnostic system, and non-transitory computer readable medium

An image forming apparatus includes a density adjusting unit that executes first formation of forming a first color sample in a transfer area on an image carrier, first adjustment of adjusting output characteristics of an image forming unit to reduce a difference between a measured density of the first color sample and a first target density, second formation of forming a second color sample in a non-transfer area on the image carrier, second adjustment of adjusting the output characteristics to reduce a difference between a measured density of the second color sample and a second target density, and third adjustment of adjusting the output characteristics to reduce a difference in output density between the transfer and non-transfer areas, if the difference between the measured density of the second color sample and the second target density exceeds a predetermined extent after repeating the second formation and the second adjustment.

Image forming apparatus, density adjusting device, non-transitory computer readable medium, density adjusting method, and image forming method

An information processing apparatus includes an acquiring unit that acquires diagnosis information regarding an operating condition of an image forming apparatus that forms an image, a communication connection unit that establishes a communication connection with the image forming apparatus and a management server via a communication line, a storage controller that stores the diagnosis information acquired by the acquiring unit in a predetermined memory, where the storage controller reduces a data amount of the diagnosis information stored when a communication connection is not established to less than that stored when a communication connection is established, and a transmitting unit that transmits the diagnosis information stored in the memory to the management server if a communication connection is established by the communication connection unit.

Information processing apparatus, information processing method, image forming apparatus, image forming method, and computer readable medium

An information processing apparatus includes an acquiring unit that acquires an information item regarding an operating condition of an image forming apparatus, a first storage controller that stores the information item in a memory, an extracting unit that extracts samples from among the information items stored in the memory in accordance with a predetermined algorithm if an amount of space remaining in the memory is smaller than a predetermined threshold value, where the samples represent results of detection of the operating condition of the image forming apparatus, a statistical unit that computes a statistical value using the samples, a second storage controller that deletes the samples from the memory and stores the statistical value in the memory, and a transmitting unit that transmits the information items to a server via a communication line.

Information processing apparatus, image forming apparatus, information processing method, image forming method, and computer readable medium

An image-forming apparatus includes: a memory that stores a plurality of image forming modes; a contact controller that controls a status of contact between a plurality of image-forming units and an intermediate transfer member on the basis of an image forming mode selected from among the plurality of image forming modes, so that an image-forming unit used for image forming represented in the selected image forming mode is contacted with the intermediate transfer member, and another image-forming unit is moved away from the intermediate transfer member; and an image-quality adjusting unit that adjusts, if the status of contact is changed by the contact controller, an image quality of an image that is to be transferred onto the intermediate transfer member from the image-forming unit that is in contact with the intermediate transfer member.

Image-forming apparatus

An image forming apparatus includes plural image holding members; an intermediate transfer material; a transfer unit that transfers the toner images onto a recording medium; a density control toner image creating unit that creates a density control toner image at a constant position on each of the image holding members; a density detection unit that detects density of the density control toner image transferred onto a non-image region; and a creation timing control unit that controls timing of creating the density control toner image to create the density control toner image in the non-image region of the intermediate transfer material at a position where a length obtained by integrally multiplying the length obtained by adding the non-image region to the image region along the moving direction of the intermediate transfer material becomes equal to a length obtained by integrally multiplying the circumferential length of the image holding member.

Image forming apparatus for controlling image density

The image forming apparatus is provided with: an image forming unit that forms an image on a medium; a speed changing unit that changes an image forming speed of the image forming unit; a detecting unit that detects a state quantity indicating a state of the image on the medium formed by the image forming unit; and an adjusting unit that adjusts an image forming condition set by the image forming unit according to a detection result of the state quantity detected by the detecting unit and a target value for the state quantity. The adjusting unit changes the target value for the state quantity according to the state quantity detected by the detecting unit after the speed changing unit changes the image forming speed.

Image forming apparatus, controlling unit, image forming method and computer readable medium

An image forming apparatus is provided with: an image forming unit that forms an image on a medium according an image forming condition; a speed changing unit that changes an image forming speed of the image forming unit between a plurality of image forming speeds including a first image forming speed; an adjusting unit that adjusts the image forming condition set in the image forming unit; a measuring unit that measures an elapsed state after the image forming condition is adjusted for the last time at the first image forming speed in the image forming unit, and outputs a measured value indicative of the elapsed state; and a determination unit that determines, according to the elapsed state, whether or not to adjust the image forming condition before the image forming unit starts forming an image at the first image forming speed.

Image forming apparatus, controller, computer readable medium and image forming condition adjustment method

An image forming apparatus, forming an image by two-dimensionally fast and slow-scanning and exposing with light that has been modulated in accordance with image data representing an image and visualizing an electrostatic latent image with toner, includes a calculating unit that divides an image region in a fast-scanning direction into plural regions and calculates image data amounts to be used for image formation in the image data per each of the plural regions, and a correcting unit that corrects, on the basis of the calculation result of the calculating unit, unevenness of density in the fast-scanning direction in the toner image resulting from a distance between a position where the toner is supplied to a developing roll and a position where the toner is supplied to each of the plural regions.

Image forming apparatus and image density controlling method

An image formation apparatus includes an imaging light source, a photosensitive body and a correction light source. The imaging light source outputs light modulated in accordance with image data representing an image. An electrostatic latent image is formed at the photosensitive body by the light output from the imaging light source. The correction light source is provided separately from the imaging light source, and outputs light toward the photosensitive body for correcting one of variations in potential on the photosensitive body and irregularities in density distribution of an image, which image is to be formed in accordance with the electrostatic latent image that is formed on the photosensitive body by the imaging light source.

Image formation apparatus with image correction capability

An image forming apparatus for continuously printing plural images has an empirical calibration part that performs color calibration processing based on a test image printed on recording paper, a predictive calibration part that performs color calibration processing based on a reference value that has been determined in advance, and a controller that allows the empirical calibration part and the predictive calibration part to perform color calibration processing. In the case where recording paper is switched and plural images are printed, the controller allows the empirical calibration part to perform color calibration processing when predetermined type of recording paper is used, and allows the predictive calibration part to perform color calibration processing when recording paper of other type is used.

Image forming apparatus and calibration method

An image forming device includes an image forming section that forms an image onto a recording medium, a calibration section that performs a color calibration process based upon the image formed on the recording medium and a control section that, when a plurality of images are successively formed by the image forming section, reflects a result of the color calibration process by the calibration section on an image forming process at a timing when a continuity of the formed image or the recording medium is broken.

Image forming device, color calibration method and its program

An image forming device comprises an image forming section that consecutively forms plural images on a plurality of recording media, a detecting section that detects, on the basis of an image formed in a storage medium, color development data indicating color development characteristics of the image, a warning control section that decides whether or not to issue warning information regarding the color development characteristics on the basis of the color development data detected by the detecting section and reference data which the color development characteristics are to reference, and a warning section that issues warning information regarding the color development characteristics in response to the decision by the warning control section.

Image forming device, color calibration method and storage medium storing its program

In a toner concentration detecting device wherein developer is carried by a roll from a developer flowpath to a detection station for optical detection thereof, a restriction element is provided adjacent the roll between the developer flowpath and detection station to limit the thickness of the developer adhered to the roll. A scraper is provided downstream of the detection station for cleaning the roll, and the roll itself is covered with a non-magnetic material to provide a substantially smooth outer surface.

Toner concentration detecting device for dry type electrographic copy

A developer density detecting apparatus in a copying machine including a detector roll assembly rotatably supported adjacent to a developing roll. The detector roll assembly comprises a sleeve and a plurality of magnets attached to the inner peripheral surface of the sleeve. The magnets are arranged to have different polarity alternately and terminates in the same polarity at both peripheral ends. A conductive glass is provided for receiving toners from the detector roll assembly. Mounted on the conductive glass is a photoelectrical detector for detecting developer density from the toners adhered to the conductive glass.

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Kanagawa, Japan

Matsuyuki Aoki