Konica Minolta Business Technologies, Inc.

Konica Corporation

Konica-Minolta Holdings, Inc.

Konica Minolta Technosearch Co., Ltd.

Kazumichi Yamauchi

Kazutoshi Yoshimura

Akira Okamoto

Satoshi Sakata

Hideki Nakamura

Kenji Yamamoto

Yoshiki Katayama

Atsushi Takahashi

Utami Soma

Masatoshi Ogawa

Yoshihito Sasamoto

Akifumi Isobe

Ryuji Okutomi

Norio Joichi

Takeshi Tamada

Susumu Kurihara

Hiroyuki Watanabe

Hiroshi Isokawa

Hideo Yamane

Ritsuo Fujii

Seiji Yamaguchi

Hiroshi Kobayashi

Eiji Sugimoto

Yasuo Shiokawa

An image forming apparatus includes: a sheet conveyance section having a sheet storing member to store sheets that have been aligned in a prescribed placing direction, which conveys a sheet stored in the sheet storing member; an image forming section having an image carrier, which forms an image on the image carrier; an image transfer section which transfers the image formed on the image carrier onto a sheet conveyed by the sheet conveyance section; a winding detection section which detects whether or not the sheet conveyed by the sheet conveyance section is wound around the image carrier; and a controller which controls to instruct an operator to conduct a change operation of the placing direction of the sheets stored in the sheet storing member based on a sheet winding detection signal outputted from the winding detection section.

Image forming apparatus and image forming system with winding detection

An image forming apparatus provided with a sheet feeding tray to store sheets for image forming; a sheet feeding section to feed the sheets form the sheet feeding tray so as to supply the sheets for the image forming; and a control section to individually administer remaining sheets stored in the sheet feeding tray in advance and replenishment sheets replenished when the sheet feeding tray is replenished with the sheets in a state where the sheets stored in the sheet feeding tray in advance is remaining. Whereby, a JOB can be continued or aborted appropriately with reference to information and remaining amounts of remaining sheets and replenishment sheets in one sheet feeding tray, since the information and the remaining amounts are administered individually.

Image forming apparatus

A sheet discharging tray device includes: a discharging section from which a sheet is discharged; a discharging tray on which the sheet discharged from the discharging section is stacked sequentially; a tray drive section which drives the discharging tray in a tray shift direction that is perpendicular to a sheet discharging direction from the discharging section with reference to a sheet surface; a controller which conducts a tray shift operation that shifts a position of the discharging tray under a condition of the number of sheets stacked on the discharging tray, and a sheet detection section which detects an alignment deviation in the tray shift direction. The controller changes an operation status of the discharging tray when a tray shift operation is conducted and changes a discharging operation of a sheet to the discharging tray, based on a detected result of the sheet detection section.

Sheet discharging tray device and image forming system provided therewith

There are provided a plurality of sheet feed trays in which sheets are stored, a sheet feeding section which enables a continuous sheet feeding of sheets stored in the above sheet feed tray, and a control section which controls the above sheet feeding section and has an auto tray switch function, and the aforesaid control section obtains information on an amount of sheets stored in the above sheet feed tray, during a continuous sheet feeding from the above sheet feed tray, and judges whether or not the amount of the remaining sheets in the above sheet feed tray satisfies the prescribed condition. In the case where the above prescribed condition is satisfied, the control section stops motion of sheet feeding from the above sheet feed tray while leaving sheets in the above sheet feed tray.

Sheet feeding device and image forming apparatus with a plurality of sheet feed trays

A sheet supply device including an elevation section for up and down movement of the sheet bundle accommodated on the sheet placement table, blow sections for blowing air to the upper side surface of the sheet bundle to float up the sheet from the aforementioned sheet bundle, and a non-contact sheet detection sensor for detecting the existence or nonexistence of a sheet at the predetermined position of the aforementioned sheet placement table. The elevation drive motor is controlled in such a way as to move the sheet bundle up and down, based on the frequency or ratio of the sheet existence in the detection result of the sheet detection sensor in the operation mode of the blow section.

Sheet supply device and image forming apparatus

An image forming apparatus, which includes: an image forming section to form an image on a transfer sheet conveyed to the image forming section; an edge detecting sensor which detects an edge position of the transfer sheet in a main scanning direction while the transfer sheet is conveyed to the image forming section; and a controller which controls an image writing position at the image forming section based on a result of an edge position detection by the edge detecting sensor; wherein the edge detecting sensor comprises a plurality of light sources each having a different wavelength, and the controller comprises a light source controller which controls lighting of the plural light sources.

Disclosed is an image forming apparatus, a sheet finisher and an image forming system; each of them including: a display for displaying a work item for a maintenance in the form of a guidance display; a detection section for detecting whether the work item is executed or not; an energization controller for supplying/blocking power supply to electric components to be maintained; a connection judging section for judging whether the electric components are electrically connected with the power supply or not; and a controller for controlling the display to switch displays of the work item and for controlling the energization controller, in accordance with a detection result of the detection section; wherein the controller causes the display to display an alarm and a guidance display of a corresponding work, according to a judgment of the connection judging section.

Image forming apparatus, sheet finisher and image forming system

An image forming apparatus for forming a visible image on a transfer sheet according to a job, the image forming apparatus including: a plurality of sheet feed trays adapted to load plural kinds of transfer sheets; an image forming section for forming a visible image according to image data on a transfer sheet; a conveying section for conveying a transfer sheet from each of the plurality of sheet feed trays toward the image forming section; a display section for displaying various items; a color detection section for detecting a transfer sheet color of the transfer sheet being conveyed by the conveying section; and a control section for controlling a conveyance of the transfer sheet and the image formation, wherein the control section displays a transfer sheet color designated by the job and the transfer sheet color detected by the color detection section on the display section.

Image forming apparatus and image forming system displaying transfer sheet color

An image forming apparatus for use with a transfer sheet includes: a sheet feeding unit structured to feed the transfer sheet; a color detection sensor structured to detect color information on the transfer sheet fed from the sheet feeding unit; a recognition section structured to recognize whether the transfer sheet subjected to the detection by the color detection sensor is a non-tabbed transfer sheet having no tab, or either a tabbed transfer sheet having a tab or an unprocessed tabbed transfer sheet blank, the unprocessed tabbed transfer sheet blank being capable of being processed into a tabbed transfer sheet having a tab by post-processing, wherein a recognition result is made based on the color information detected by the color detection sensor; and a control section that controls image forming on and conveying of the fed transfer sheet, according to the recognition result by the recognition section.

When images are to be printed on two, front and lower surfaces of a sheet, in order to register the position of the image on the front surface and the position of the image on the back surface highly accurately, an image printing apparatus of this invention includes an image printing section which forms the image for the front surface of the sheet as well as an image of a reference mark on a photosensitive member at one portion in a region outside an image printing region and transfers the images onto the front surface of the sheet, a fixing unit which fixes the transferred images on the sheet, a line sensor which detects the reference mark after fixing printed on the front surface of the sheet, an arithmetic operating section which obtains a shrinkage factor of the sheet on the basis of a size of the reference mark before fixing and a size of the detected reference mark after fixing and calculates a position and magnification of the image to be printed on the back surface on the basis of the shrinkage factor, and a control section which performs control operation to print the image on the back surface of the sheet on the basis of the calculated position and the calculated magnification.

Image printing apparatus and image printing method

An image forming apparatus having therein an image forming device that transfers an image onto a transfer sheet and a reversing device that reverses the transfer sheet, wherein the image forming device transfers an image on the front surface of the transfer sheet, then, the reversing device reverses the sheet, and the image forming device transfers an image onto the rear surface of the sheet and the image forming apparatus further has therein a correcting device that corrects the overall skew of the transfer sheet depending on an inclination of a leading side of a transfer sheet in the conveyance direction set in advance before an image is formed on the front surface, and corrects the overall skew of the transfer sheet depending on an inclination of a leading side of a transfer sheet in the conveyance direction set in advance before an image is formed on the rear surface.

An image forming apparatus includes an image forming section that forms an image on a sheet, based on image data of a job, a sheet ejection tray on which to stack sheets have been formed with an image, and a controller to control image forming, wherein the controller performs control to form an image based on a composite image of image data and a cut guide attached to the image data only on a first image forming page or a last image forming page.

Image forming apparatus for attaching a cutting guide to image data

An image printing apparatus, which can correct variation in inter-sheet distance at the time of conveyance of transfer sheets, comprising an image printing section which performs image printing by sequentially conveying a plurality of transfer sheets at predetermined intervals at a first convey velocity and performing transfer and fixing of a toner image on each transfer sheet, a timepiece section which measures a time required for the image printing section to perform image printing on the each transfer sheet, and a delivery convey section which receives each transfer sheet on which image printing is performed by the image printing section and delivers the each transfer sheets while adjusting intervals therebetween by conveying the each transfer sheets upon changing the convey velocity to a second convey velocity set on the basis of the measured time required for the image printing on the each transfer sheet.

Image printing apparatus

An image forming apparatus includes: an image forming section that forms an image on a sheet on the basis of image data; a sheet discharge tray on which the sheet with the image that has been formed, is stacked; and a controller that controls image formation. The image forming apparatus has a one sided mode in which the image formation is carried out only on a one side of a sheet and a two sided mode in which the image formation is carried out on both sides of a sheet, and when the two sided mode is carried out, the controller controls to form an image as a composite image in which a cutting mark is attached to the image data for a first surface only or a second surface only of the sheet.

Image forming apparatus in which cutting mark is given to image data

An image forming apparatus has a job information acquiring unit for acquiring job information which includes job-related sheet size information, a confirmation-output size determining unit for determining the size of a sheet for confirmation output according to the job information, a job information position designating unit for specifying a portion of the job image information to be printed out on a confirmation-output sheet of a size which is determined by the confirmation-output size determining unit, an editing unit for editing the portion of job image information specified by the job information position designating unit as confirmation-output image information on the confirmation-output sheet of a size determined by the confirmation-output size determining unit, and an image forming unit for carrying out image forming of confirmation-output image information edited by the editing unit on the confirmation-output sheet.

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Hachioji, Japan

Kazumichi Yamauchi