Konica Minolta, Inc.

Konica Minolta Business Technologies, Inc.

Takashi Watanabe

Kazutoshi Yoshimura

Akinori Kimata

Takeshi Ishida

Toshikazu Higashi

Masahiro Nonoyama

Shiro Umeda

Hitoshi Asano

Takafumi Tanaka

Masayuki Watanabe

Tatsuya Eguchi

Teruhiko Toyoizumi

Yoshiki Katayama

Hiroshi Eguchi

Kouei Cho

Hiroaki Takatsu

Kiyohito Tsujihara

Yukinobu Iguchi

An image forming apparatus includes: a photoreceptor that forms a toner image; a light emission element that exposes the photoreceptor; at least one light emission controller that controls light emission of the light emission element; and a hardware processor that transmits a signal including a control parameter for controlling the light emission element with respect to the light emission controller, wherein the light emission controller stops light emission control over the light emission element according to communication that receives the signal including the control parameter from the hardware processor.

Image forming apparatus and method for controlling the same

An image reading apparatus for separating and conveying documents from a bundle of documents, causing the document to pass through a reading position, and reading an image from the document, includes: a reading translucent plate; a rotation member capable of rotating around a shaft; and a rotation driver that rotates the rotation member, wherein in the rotation member, each of: a cleaning member; a white reference area; and an end portion detection area is formed partially with regard to a circumferential direction, the cleaning member and the end portion detection area are arranged adjacent to each other, the rotation driver is arranged so that the end portion detection area faces an opposing surface, and the rotation member is rotated in a paper interval period from when a trailing edge of the document passes the reading position to when a leading edge of a subsequent document reaches the reading position.

Image reading apparatus and image forming apparatus

A sheet conveying apparatus has a reference roller, a detection roller, and a detection sensor. The detection roller can move, and makes contact with the reference roller, facing the reference roller. The detection sensor outputs a signal corresponding to the displacement of the detection roller. The sheet is conveyed to a nip portion of the pair of rollers. At this time, the timing when an edge portion of the sheet being conveyed passes through the nip portion is detected. In response to the timing detected, the thickness of the sheet is detected, based on the signal output from the detection sensor.

Sheet conveying apparatus which can detect thickness of sheets

An image forming apparatus as a sheet conveying apparatus comprises a paper feeding roller, an upstream side sensor, and an ultrasonic wave sensor. The paper feeding roller provides a plurality of sheets placed on a document tray in series to a conveying path. The upstream side sensor detects presence or absence of a sheet being conveyed along the conveying path, at a location of a downstream side of the paper feeding roller along the conveying path. The ultrasonic wave sensor detects presence or absence of occurrence of multiple feed, based on intensity of ultrasonic waves received at a location of a downstream side of the upstream side sensor along the conveying path.

Sheet conveying apparatus which detects multiple feed

An image forming device includes a power supply for transfer for applying a voltage for transfer for transferring the toner image on the image carrier onto the recording paper sheet to the transfer member, and a recording paper sheet feed device for feeding the recording paper sheet into the pressing nip, and the method for controlling a power supply for transfer. The power supply for transfer is turned on and the output voltage of the power supply for transfer is set to 0 V before the transfer member is pressed against the image carrier, and the output voltage of the power supply for transfer is switched from 0 V to a high voltage for transfer after the transfer member is pressed against the image carrier.

Image forming device and method for controlling a power supply for transfer

In a paper folding device, a first driving unit for forming a first folding line on the paper moves a first folding plate member to the paper fed to a first feeding position until load on the first folding plate member reaches a prescribed value or higher. A time period from the start of driving of the first folding unit by the first driving unit to the start of driving of a second folding unit by a second driving unit is determined based on characteristic of paper.

Paper folding device for three-folding sheet of paper

A document feeder feeds document sheets one by one from a stack on a tray by pressing one or more pick-up rollers against an uppermost document sheet and guiding one widthwise edge of the document sheet. The width direction is perpendicular to a document transport direction. The document feeder includes: a document size obtainer that obtains size information indicating a width of the document sheet; and a center-of-contact shifting mechanism that shifts a center of contact of each pick-up roller along an axial direction of the pick-up roller according to the obtained size information. The center of contact is a central point of an area where the pick-up roller is in contact with the document sheet. Each pick-up roller is in a barrel shape. The center-of-contact shifting mechanism shifts the center of contact of each pick-up roller by axially tilting the pick-up roller relative to the document surface.

Document feeder, document reader, and image forming apparatus with improved accuracy of document skew correction

An automatic document feeder devicehas a device bodydisposed on a platenof a document reading deviceand pivotably openable relative to the deviceby being hingedly connected thereto. The deviceincludes detectorsfor detecting a document-stack state of at least one of a feeder and an output trayprovided on the body, a driverfor driving the bodyto be pivotably opened in an upward direction from the platen, an instructorfor giving an instruction for the driving, and a controllerfor, based on a detection result of the detectorsin priority to the instruction, to permit or forbid the driving, or to control an amount of the driving. When the device body is automatically opened, documents in the feeder or the output tray are unlikely to fall off.

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Toyokawa, Japan

Takashi Watanabe