Ricoh Company, Ltd.

Kohhei Yamaguchi

Hiroyuki Iwasaki

Nobuyuki Satoh

Yoshihiro Takahashi

Suguru Yokozawa

Yusuke Ishizaki

Masashi Kasamai

Kohtaroh Ikegami

Shogo Miura

A liquid ejecting apparatus includes a plurality of ejection heads, each including a nozzle array in which a plurality of nozzles, each configured to eject a droplet, are arranged in an array; and an ejection receiver configured to receive the droplet from the plurality of ejection heads. A conveying direction in which an ejection target medium is conveyed and an arrangement direction in which the nozzle array is arranged are parallel to each other, and at a predetermined timing, at least one ejection head among the plurality of ejection heads moves to a position facing the ejection target medium and ejects the droplet toward the ejection target medium, and, simultaneously, a remaining ejection head among the plurality of ejection heads other than the at least one ejection head moves to be withdrawn from the position facing the ejection target medium and ejects the droplet toward the ejection receiver.

Liquid ejecting apparatus, embroidery system, and method for controlling liquid ejecting apparatus

A liquid discharge apparatus includes a discharge head having a nozzle row, a conveyor is configured to convey a discharge target medium, a head mover configured to move the discharge head in an orthogonal direction, a head rotator configured to rotate the discharge head, and circuitry configured to perform a position setting operation to cause the head mover to move the discharge head to a position in the orthogonal direction, a discharging operation to cause the discharge head to discharge a liquid at the position, a medium conveying operation to cause the conveyor to convey the discharge target medium, and a changing operation to cause the head mover to change the position of the discharge head, and cause the head rotator to rotate the discharge head based on a length of droplets of the liquid landed on the discharge target medium by the above-described operations.

Liquid discharge apparatus and method for adjusting discharge head in the liquid discharge apparatus

A liquid discharge apparatus includes a liquid discharge head, a scanning device, a conveyance device, a reading device, control circuitry, and a detecting device. The liquid discharge head is configured to discharge liquid to a target object. The scanning device is configured to move the liquid discharge head in a main scanning direction. The conveyance device is configured to convey the target object in a direction perpendicular to the main scanning direction. The reading device is disposed at a predetermined position with respect to the liquid discharge head. The control circuitry is configured to change a detection pattern image for detecting a defective nozzle, in accordance with a feed amount of the target object in the sub-scanning direction. The detecting device is configured to identify a nozzle corresponding to a defective portion of the detection pattern image read by the reading device.

Liquid discharge apparatus and liquid discharge method

An electronic circuit includes a first consumption part, at least one second consumption part, and a current mirror circuit. The first consumption part passes a current to consume electricity when a voltage exceeding a first voltage is applied. At least one second consumption part is disposed in parallel with the first consumption part and passes a current to consume electricity. The current mirror circuit passes, to the second consumption part, a current corresponding to a current that flows through the first consumption part.

Electronic circuit, protective device, and image forming apparatus

There is provided a driving apparatus comprising: a driving unit configured to rotate a driving shaft; a speed setting unit for setting a rotational speed of the driving shaft; a driving shaft joint connected with the driving shaft to rotate with the driving shaft for transmitting driving-force to a driven apparatus, the driving shaft joint being fitted into a driven shaft joint connected with the driven apparatus that is made detachable; a rotational position detection unit configured to detect a predetermined rotational position of the driving shaft joint; and a driving control unit configured to control the driving unit; wherein upon the driven apparatus being detached, the driving control unit controls the driving unit to stop the rotating driving shaft based on a detection result of the rotational position detection unit after the speed setting unit sets the rotational speed of the driving shaft to be a first rotational speed.

Driving apparatus, image forming apparatus, method of driving control and program

An energy-saving control unit detects a supply of power to an image forming apparatus and performs an energy saving control of an external controller. A switching unit switches a start and a stop of supply of power to an onboard circuit of the external controller. Upon detecting the supply of power to the image forming apparatus, the energy-saving control unit sends a power control signal for instructing a start of the supply of power to the onboard circuit to the switching unit. Upon receiving the power control signal, the switching unit switches to the start of the supply of power to the onboard circuit.

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Kanagawa, Japan

Kohhei Yamaguchi