Konica Minolta, Inc.

Minolta Company, Ltd.

Konica Minolta Business Technologies, Inc.

Masahiro Nonoyama

Junichi Masuda

Taku Kimura

Masahiro Kamiya

Katsuhide Sakai

Toshikazu Higashi

Akimasa Ishikawa

Mikiyuki Aoki

Kazuhito Ozawa

Takashi Watanabe

Shinji Wakamatsu

Kunihiko Kanou

Takeshi Ishida

Masayuki Watanabe

Yuusuke Morigami

Toru Kasamatsu

Yoshiki Katayama

Hiroshi Eguchi

Kouei Cho

Hitoshi Asano

Kiyohito Tsujihara

Yukinobu Iguchi

Shinobu Seki

Tadashi Kobayashi

Yoshiki Nakazawa

Norihiko Suzuki

Ryo Hirano

Keiko Toyoda

Motoki Takata

Kazuhiko Nakatsuka

Natsuyo Ida

An image formation apparatus includes: an image former that forms an image on a recording medium delivered along a predetermined delivery path and outputs the recording medium; a first hardware processor that judges whether or not the recording medium is an envelope; a second hardware processor that acquires a basis weight of the recording medium; a third hardware processor that determines control for when an image is formed on the recording medium on the basis of a judgment result from the first hardware processor and a basis weight acquired by the second hardware processor; and a fourth hardware processor that controls operation of the image former on the basis of a determination result from the third hardware processor.

Image formation apparatus and control method therefor

An image formation apparatus includes: an image former that forms an image on a recording medium delivered along a predetermined delivery path; a first hardware processor that judges whether or not the recording medium is an envelope; a second hardware processor that acquires a basis weight of the envelope; a third hardware processor that determines, in case the first hardware processor judges that the recording medium is the envelope, control for forming an image on the envelope by the image former on the basis of the basis weight of the envelope acquired by the second hardware processor.

A recording medium conveyance device includes storage that stores a recording medium, a conveyer that takes out the recording medium stored in the storage and conveys the recording medium as a conveyed object, an ultrasonic sensor that outputs a value indicating an attenuation amount of an ultrasonic wave caused by the conveyed object and a hardware processor, wherein the hardware processor executes an overlay detection process of detecting whether the conveyed object is in an overlay state in which a gap is present based on a result of output by the ultrasonic sensor, and prevents execution of the overlay detection process with respect to a first conveyed object that is to be conveyed first by the conveyer.

Recording medium conveyance device, recording medium conveyance method and non-transitory computer-readable recording medium encoded with recording medium conveyance program

An image forming apparatus includes: a conveyance path that conveys a sheet; registration rollers that are arranged across the conveyance path and each comprise a nip part; a sheet locking member that locks a front end of a sheet conveyed in the conveyance path, where the sheet locking member swings between a first attitude and a second attitude, in the first attitude the sheet locking member locks the sheet on an upstream side of the nip part, and in the second attitude the sheet locking member is retracted to a downstream side of the nip part and allows the sheet to pass through the nip part; an energizer that energizes the sheet locking member to maintain the first attitude; and a hardware processor that detects deterioration of the energizer.

Image forming apparatus that detects deterioration of a spring used to bias a sheet locking member

Provided is a sheet conveyance apparatus armored with a housing, the sheet conveyance apparatus includes: a sheet conveyor that feeds a sheet to a downstream side in a direction of conveyance; a conveyance guide that guides the sheet to be conveyed; an ultrasonic sensor that detects the sheet guided by the conveyance guide; and a shield member that is conductive, wherein the ultrasonic sensor includes: a transmitter that transmits an ultrasonic wave having a predetermined frequency; and a receiver that receives the ultrasonic wave, the transmitter and the receiver are arranged along the conveyance guide, and the shield member is disposed between the housing and the receiver in a sheet-face perpendicular direction at an ultrasonic-irradiation position of the sheet being conveyed, the shield member covering an entirety of the receiver in plan view in the sheet-face perpendicular direction.

Sheet conveyance apparatus, image reading apparatus, and image forming apparatus

An image forming apparatus includes: a first rotor and a second rotor that are each a rotatable member; a first movable member including the first rotor or a transferer that transfers power of the first rotor to another member; a second movable member including the second rotor or a transferer that transfers power of the second rotor to another member; a hardware processor that drives simultaneously the first rotor and the second rotor at mutually different numbers of revolutions or speeds, and performs abnormality diagnosis on the first movable member and the second movable member, based on the sounds of operation acquired by the sound acquirer; and a sound acquirer that acquires sounds of operation of the first movable member and the second movable member with the first rotor and the second rotor being driven by the hardware processor.

Image forming apparatus with abnormality diagnosis, image forming system with abnormality diagnosis, and control program of image forming apparatus with abnormality diagnosis

A phase control device includes: at least one switching element connected to an AC power source, the switching element being capable of: turning on and off at specified timings; delivering AC power to a load upon turn-on and cutting it off upon turn-off; and keeping an on-time from the start to the end of turn-on and an off-time from the start to the end of turn-off, the on-time and off-time being variable; a timing setting portion that sets a turn-on and turn-off timing for turning on and off the switching element; a judgment portion that judges whether or not the turn-on and turn-off timing are on at a phase within a first or second phase range; and a processor that starts turning on and off the switching element at the turn-on and turn-off timing, the processor being capable of adjusting the on-time and off-time depending on the judgment result.

Phase control device, image forming apparatus, and recording medium

A power control device receiving supply of power from a power source, the power control device including: a power accumulator accumulating a part of power from the power source; a first voltage converter receiving power from the power source and the power accumulator, performing voltage conversion to a first target voltage, and supplying power with the first target voltage to a first load; a second voltage converter receiving power from the first voltage converter, performing voltage conversion to a second target voltage, and supplying power with the second target voltage to a second load; a power source monitor monitoring power from the power source; and a power controller lowering the first target voltage to a level that the second voltage converter is capable of converting to the second target voltage when the power source monitor detects that the supply of power from the power source has stopped.

Power control device and image forming device

An image reading apparatus is disclosed. The image reading apparatus includes an automatic document feeding unit that transports a document in a predetermined direction while the document floats above a platen glass member and a light source disposed below the platen glass member that irradiates a portion on the document at a predetermined reading location such that reflected light from the portion on the document is converted into image data and a floating distance between the document and the platen glass member is detected to set a value of an image parameter for correcting the image data for the document, based on the detected floating distance between the document and the platen glass member.

Image reading apparatus, method for reading image, and storage medium that detects a floating distance

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

A sheet feeding device comprising a supply roller for feeding sheets mounted on a tray, a drive shaft for supporting the supply roller and rotationally driving the same, first and second supporting arms swingably supported on the drive shaft, a feed roller rotatably supported on the first and second supporting arms, a feed roller transmission mechanism for rotating the feed roller in conjunction with the rotation of the supply roller, first and second transmission mechanisms for swinging the first and second supporting arms, and first and second resilient retaining members which are capable of retaining the first and second supporting arms, the first and second transmission mechanisms shifting the timings that the respective first and second supporting arms are swung against the corresponding resilient retaining members. An automatic sheet transfer device comprising this sheet feeding device. An electrophotographic image forming device comprising this automatic sheet transfer device.

Sheet feeding device, automatic sheet transfer device and image forming device

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.

Automatic document feeder device and image forming device

When a print job is received from the network, subsequent processing depends on whether the print job includes authentication information. Where the print job includes authentication information, the print job is stored in a memory while being associated with the authentication information. When authentication information is received from the network thereafter, a print controller selects, from among the print jobs stored in the memory, the job that is associated with authentication information that matches the received authentication information, and causes it to be printed.

Printer, printing system, recording medium and server requiring authentication

A finisher connected to a copying machine produces a bound booklet by inserting papers from the copying machine into a cover with an adhesive layer of a hot-melt adhesive which is coated on the inner surface of near a spine interconnecting a front board and a back board, and heating the cover and a sheaf of papers, and joining them by adhesion. Thus, the series of operations ranging from the preparation of documents through the bookbinding can be facilitated and expedited.

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Toyokawa, Japan

Masahiro Nonoyama