Konica Minolta, Inc.

Konica Minolta Business Technologies, Inc.

Konica Corporation

Konica-minolta Holdings, Inc.

Konica Minolta Business Tech., Inc.

Hiroshi Isokawa

Ritsuo Fujii

Seiji Yamaguchi

Yasuo Shiokawa

Satoshi Sakata

Kazumichi Yamauchi

Hiroyuki Watanabe

Mitsunori Nakamura

Kenji Kawatsu

Hirotaka Kabashima

Kouki Takahashi

An image forming apparatus performs the following. An imaging range imaged by each of the plurality of imaging sensors includes an overlapping portion between the imaging sensors adjacent in a width direction orthogonal to a conveying direction along the conveying path. A hardware processor performs a calibration operation of a first sensor based on a color measuring result of a predetermined inspection image measured within a standard imaging range of the first sensor among the plurality of imaging sensors, and a standard imaging result within the standard imaging range imaging an inspection image with a same pattern as the inspection image. The hardware processor compares imaging results by the plurality of imaging sensors in the overlapping portions and performs the calibration operation of another sensor different from the first sensor using the standard imaging result as a standard.

Image forming apparatus, image reading apparatus,and calibration method for a plurality of imaging sensors

Image forming apparatus, image reading apparatus, and calibration method for a plurality of imaging sensors

An image forming apparatus, includes: an image former that forms an image on a sheet; an inspector that inspects an object; and a feed path that conveys the object to the inspector, wherein the feed path is installed to bypass the image former.

Image forming apparatus

An image reading apparatus includes a reader, a transmitter, an opposing part that is placed opposite to the transmitter, and a hardware processor that controls a position of the opposing part such that a gap between the transmitter and the opposing part becomes a first gap when images are read by the reader, and a gap between the transmitter and the opposing part becomes a second gap, which is wider than the first gap, when no image is read by the reader.

Image reading apparatus and image forming system, including opposing part

An image forming system includes an image forming device, a reading device and a hardware processor. The image forming device includes an image former that forms an image on a sheet. The reading device includes a line sensor and a lens unit. The line sensor reads the sheet with the image formed, thereby obtaining a read image. The lens unit includes a plurality of lenses and forms an image of the sheet on the line sensor. The hardware processor identifies a sheet region of the sheet in the read image, and corrects a magnification of each subregion in a main scanning direction of the sheet region according to a characteristic of a portion in the main scanning direction of the lens unit, the portion having being used in forming an image of the subregion on the line sensor.

Image forming system and reading device

An image reading apparatus capable of performing accurate image correction is provided. The image reading apparatus is provided with a colorimeter which colorimetrically measures an image formed on a sheet based on the optical spectrum in a visible light range, a reference plate located in a position facing the colorimeter with a chromatic reflecting surface, a temperature detection unit configured to detect the temperature of the reference plate, the determination unit configured to determine whether or not the colorimeter is in a normal condition based on the temperature of the reference plate detected by the temperature detection unit and the optical spectrum in the visible light range.

Image reading apparatus and image forming system for performing accurate image correction

A reading apparatus which is connected to an image forming apparatus that forms an image on a recording medium, the reading apparatus including: a supporting section which forms a reading surface for reading the image on the recording medium by contacting the recording medium on which the image is formed by the image forming apparatus; a conveyance section which conveys the recording medium so that the recording medium contacts the supporting section from a leading direction at a predetermined leading angle with respect to the reading surface and moves apart from the supporting section to an ejection direction at a predetermined ejection angle with respect to the reading surface; and a reading section which reads the image on the recording medium at a position where the reading surface is formed.

Reading apparatus that suppresses height of recording medium at a reading position, image forming apparatus and image forming system having the same

An image reading apparatus and an image forming system which are hardly affected by noise due to paper dust or the like is provided. An image reading apparatus includes a back side image reading unit and a front side image reading unit which are continuously arranged in a sheet conveying direction. Also, an upstream side conveyance member and an intermediate conveyance member are arranged adjacent to each other in the upstream and downstream sides of the back side image reading unit. The intermediate conveyance member and the downstream side conveyance member are arranged adjacent to each other in the upstream and downstream sides of the front side image reading unit. The colorimetric unit is arranged outside an area from the upstream side conveyance member to the downstream side conveyance member in the sheet conveying direction.

Image reading apparatus and image forming system

An image forming apparatus, including: an image forming section; a reading section which reads the image formed by the image forming section over a predetermined width in a width direction of the sheet; a colorimeter which reads the image over a width smaller than the predetermined width; a calibration section which calibrates the reading section on the basis of a difference between first reading section measurement data and first colorimeter measurement data; a specification section which specifies adjacent images having a largest difference in brightness of a predetermined threshold value or more from among images for color adjustment formed on the sheet; and a color adjustment section which controls the colorimeter to read at least one of the adjacent images and adjusts a color of the image formed by the image forming section on the basis of second colorimeter measurement data.

An image forming apparatus includes: a measuring section which measures a height position of a surface of a sheet at a reading position at which a reference image for image quality adjustment is read; a control section which determines a planar region of the sheet according to the height position, and determines a forming position of the reference image within the planar region; an image forming section which forms the reference image at a position of a sheet corresponding to the forming position, the sheet being newly fed after determination of the forming position; and a reading section which reads the reference image at the reading position, wherein the control section adjusts image quality by using a read value obtained from the reference image by the reading section.

Image forming apparatus with measuring section which measures a height position of a sheet surface

An image forming apparatus includes an image carrier; a toner image forming section; a transfer section which transfers the toner image onto a transfer sheet; a separation section which separates the transfer sheet from the image carrier; and a process cartridge which holds the image carrier, the toner image forming section, the transfer section, and the separation section as a unit detachable from a main unit of the image forming apparatus. The separation section includes a resin guide member which is a base for the separation section, a separation pawl for separating a transfer sheet from the image carrier, a metal reference plate fixed to the resin guide member and a resin engaging member fixed to the reference plate. The resin engaging member engages with a process cartridge member which supports the separation section allowing the separation section to move in an axial direction of the image carrier.

Image forming apparatus having a separation section which moves in an axial direction of an image carrier, for separating a transfer sheet from the image carrier

An image forming apparatus including: a cleaning member for cleaning an image carrier after a toner image on the image carrier has been transferred; a toner recycling device for conveying toner removed by the cleaning member to a developing device; a collection section where the toner removed by the cleaning member is collected; a branch conveyance path, branched from the toner recycling device, for conveying the toner to the collection section; and an air pump, provided on the branch conveyance path, for sucking air with the toner; wherein, whether the toner is conveyed from the cleaning member to the collection section or to the developing device is switched corresponding to whether the air pump operates or does not operate.

An image apparatus comprising a toner supplying device; a toner receiving device; a first toner conduit communicating with the toner receiving device to feed a toner supplied from the toner supplying device; a first feeding device which forms an air stream to feed the toner through the first toner conduit; and a detector which monitors abnormality condition in the course of toner supplying in the apparatus.

Image forming apparatus which detects abnormality condition in feeding of toner

Image forming apparatus and image forming method

A toner replenishment device has: a toner reservoir section for supplying a toner to a development device; a supply fluid conveyance section for conveying a fluid mixture of toner and air from the toner reservoir section through a supply conveying path; a toner separation section for separating the fluid mixture which has been conveyed by the supply fluid conveyance section into the toner and the air and supplying the toner to the development device; a circulation fluid conveyance section for circulating at least air separated from the fluid mixture, from the toner separation section to the toner reservoir section through a circulation conveyance path; and a capacity variable member connected with the supply conveying path or the circulation conveyance path, capable of absorbing a pressure fluctuation of the fluid mixture or the air by varying a capacity of the member.

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Hino, Japan

Hiroshi Isokawa