Konica Minolta Business Technologies, Inc.

Konica Corporation

Chikatsu Suzuki

Kenji Taki

Fusako Akimoto

Junji Sato

Minoru Asakawa

Akio Ueda

Jun Yokobori

Takaaki Sakai

Hiroki Ueda

Susumu Kurihara

Yoshihisa Kamata

Fusako Ozawa

Yoshinao Kitahara

Yusuke Yamamoto

Hiroyuki Arai

Daisuke Ueda

Atsushi Takahashi

Shigetaka Kurosu

Akitoshi Matsubara

Utami Soma

Akira Kosugi

Masatoshi Hitaka

Kazunobu Miura

Takanori Kanda

Kenichi Ozawa

Tomoo Kudo

Keisuke Tanaka

Disclosed is a tandem-type image forming system performing single-sided printing and double-sided printing on a sheet, the image forming system including: a first image forming apparatus; and a second image forming apparatus connected with the first image forming apparatus in series, wherein when the single-sided printing is performed, either the first image forming apparatus or the second image forming apparatus performs printing on a sheet, and when the double-sided printing is performed, both the first image forming apparatus and the second image forming apparatus performs the printing on a sheet, the image forming system further including: a control section which controls a sheet-passing image forming apparatus which is either the first image forming apparatus or the second image forming apparatus, and does not perform the printing but performs sheet-passing in the single-sided printing.

Image forming system and image forming apparatus

An image forming apparatus includes a patch image generation unit which generates a patch image for image density detection disposed between toner images, and a patch density sensor which detects a density of the patch image. In order to prevent the output quality of a printed image from varying with the type of paper use, a correction unit performs correction processing to match a detected density and a target density by comparing the detected density of the patch image detected by the patch density sensor and the target density of the patch image which is set in advance, a toner deposit control unit controls a toner deposit when the image forming unit forms an image based upon image data and when the patch image generation unit generates the patch image, and a paper interval control unit controls an interval between consecutive papers.

Image forming apparatus with toner deposit control and paper interval control

Disclosed in an image forming apparatus including a conveyance section to convey a paper, a first fixing device to fix a toner on the paper by heat fixing, a first cooling device to cool the paper in which the toner is fixed, a second fixing device to fix the toner on the paper by heat fixing, a second cooling device to cool the paper in which the toner is fixed, a conveyance path switching section to switch a conveyance path of the paper between a first conveyance path and a second conveyance path and a control section to control so as to carry out cooling by operating the second cooling device and not operating the first cooling device when the paper is to be conveyed to the first conveyance path and so as to carry out cooling by operating the first cooling device when the paper is to be conveyed to the second conveyance path.

Image forming apparatus for controlling fixing of toner on a paper and controlling cooling of the paper based on a conveyance path to which the paper is to be conveyed

An image forming apparatus having: a plurality of image forming sections each of which forms images of respective colors; an intermediate transfer belt; and a control section which executes a color registration correction process and a deviation correction process, wherein the color correction process includes: forming test images on the intermediate transfer belt by the plurality of image forming sections; measuring the test images thereafter; and correcting image forming positions of the image forming sections in response to the measurement results; and wherein the deviation correction process includes: detecting a deviation of the intermediate transfer belt; and correcting the detected deviation, and wherein, when an amount of correction in the deviation correction process exceeds a predetermined level during the execution of the color registration correction process, the control section executes the color registration correction process again.

Image forming apparatus which executes a color registration correction process and a deviation correction process

A bias correction is carried out before a color registration correction is carried out so as to stabilize the running state of an intermediate transfer belt, thereafter the bias correction ceases and the color registration correction is carried out.

Image forming apparatus containing color shading correction and bias correction of intermediate transfer belt

Bias correction control of an intermediate transfer belton which an image of each color formed on a surface of a photoconductive bodyis transferred, and a second transfer beltin pressure contact with the intermediate transfer beltto transfer a toner image onto a recording sheet by passing the recording sheet between the intermediate transfer belt. Contents of the bias correction control (an amount of correction control and a cycle of correction control) can be changed in accordance with states of the belts i.e. whether the intermediate transfer beltand the second transfer beltare in a pressure contact state or a separate state.

Image forming apparatus

An image forming apparatus includes: a rotating belt which rotates around a roller; a drive section which rotates the belt; a detection section which detects a position of the belt in a width direction; a moving section which moves the belt in the width direction; a control section which corrects a deviation of the belt by controlling the moving section. The control section conducts a preparatory operation in which the control section changes an amount of control to be given to the moving section under the condition where the belt is rotated to obtain a correction data showing a relation between the amount of control and a change of a position of the belt in the width direction detected by the detection section, stores the correction data in a memory section, and then corrects the deviation based on the correction data stored in the memory section.

Image forming apparatus having a control section which corrects deviation of a belt

An image forming apparatus having: a reading section that reads out an image of an original document placed on a document table; a storage section that stores image data obtained by reading out the image by the reading section; a sheet feeding section including a sheet feeding tray and an attachment detection sensor that detects whether or not the sheet feeding tray has been attached; and a control section that executes reading out of the image in a mode in which the image is read while the reading section scans the image of the original document placed on the document table, wherein the control section, when the attachment or detachment of the tray is detected during execution in the mode, suspends the reading out of the image, deletes the image data obtained from the original document image whose reading was suspended, and moves the scanning unit to a home position.

An image forming apparatus which forms an image on a sheet, includes a controller which executes a cleaning mode in which the controller conveys the sheet from a sheet feed tray to a fixing device without forming a toner image on the sheet, removes toner that has been adhered to a fixing member to clean. In case the cleaning mode is executed, the controller controls a releasing section to release pressure contact of a pressing member before a leading edge of the sheet in a sheet conveyance direction reaches a nip portion between the fixing member and the pressing member, and to bring the pressing member into pressure contact with the fixing member after the leading edge of the sheet has passed through the nip portion.

Image forming apparatus having fixing device and controller to execute a cleaning mode

An image forming apparatus, including an image forming section which conducts image formation on a sheet based on an image data, a tray which accommodates the sheets to be supplied to the image forming section, a humidity detecting unit which detects humidity inside the tray, a dehumidifying device which conducts dehumidification inside the tray; and a control section which controls the image forming section to prohibit image formation when the humidity inside the tray is higher than a predetermined value, the control section further controls the dehumidifying device to conduct the dehumidification inside the tray when the humidity inside the tray is equal to or lower than the predetermined value, and the control section still further controls the image forming section to conduct the image formation on the when the humidity inside the tray has been equal to or lower than the predetermined value.

An image forming apparatus, including an image forming section which forms image on a recording sheet based on image data, plural trays which accommodate the sheets to be supplied to the image forming section, a humidity detecting unit which detects humidity inside the paper tray, a dehumidifying device which dehumidify inside the paper tray, and a control section which controls the dehumidifying device and management of jobs, and controls the image forming section to execute the jobs, wherein if the humidity inside the paper tray to be used for a first priority job is higher than a predetermined value, the control section suspends execution of the first priority job, and the control section controls the image forming section to execute a reserved job which is executable from among reserved jobs with low priority order, before executing the first priority job.

Image forming apparatus and image forming system

There is described an image forming apparatus comprising a tray that outputs information by which various kinds of fixed form sized of recording mediums can be discriminated and a controller to acquire a approximate size of a recording medium having an unfixed form size by conducting an operation for detecting a fixed form size of the recording medium by referring to the information if the recording medium having the unfixed form size is stacked on the tray, wherein, according to the approximate size, the controller controls an operation for displaying information corresponding to unfixed form size or sizes registered in advance.

Image forming apparatus and program for controlling an image forming apparatus

An image forming apparatus including: a fixing device for fixing a toner image formed on a recording medium onto the recording medium, the fixing device comprising a first fixing member equipped with a heating device and a second fixing member for making pressure contact of the recording medium to the first fixing member; a moving section for relatively moving the first fixing member and the second fixing member; a temperature detector for detecting a temperature of the first fixing member; and a controller for controlling the moving section so as to reduce a relative distance between the first fixing member and the second fixing member, when the temperature of the first fixing member detected by the temperature detector is higher than a predetermined temperature.

Image forming apparatus having advanced fixing system

The present invention concerns an image-forming apparatus for forming an image on a recording material, an area of which is wider than that of a standard fixed-form size having a predetermined fixed-form size, based on an original image recorded on a document. The image-forming apparatus includes a plurality of recording material storing devices in each of which the recording material can be stored; an input section to establish information in regard to a size of the recording material stored in one of the recording material storing devices, as setting information corresponding to each of the recording material storing devices; a memory section to store the setting information corresponding to each of the recording material storing devices; and a control section to determine controlling conditions based on the setting information and to control operations of the image-forming apparatus based on the controlling conditions; wherein the setting information include the standard fixed-form size and longitudinal and lateral lengths of the recording material.

Image forming apparatus which controls image forming conditions for a recording material that is wider than standard-size recording material based on input size information

An image forming apparatus includes: a recording-media supplying tray for storing a recording medium; a print section for printing an image on the recording medium; a storing section for storing an adjustment value for a printing of the image in the print section related to a type of the recording medium or the recording-media supplying tray for each of two sides of the recording medium; and a control section for controlling the print section so that the printing of the image is adjusted for each of the two sides depending on the adjustment value for each of the two sides, which is stored in the storing section.

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Hachioji, Japan

Chikatsu Suzuki