Ricoh Company, Ltd.

Kentaroh Kurosu

Takuya Murata

Motoharu Takahashi

Yoshihiro Asano

Shingo Nagatsuka

Shinya Tanaka

Kazumi Suzuki

Takashi Enami

Suguru Yokozawa

Taichi Urayama

Akira Murakata

Norio Kudoh

Jun Hitosugi

Ryohta Morimoto

Yoshiaki Kawai

Miyo Taniguchi

Keita Yoshikawa

Shingo Hayashi

Manabu Kodama

Keiko Kajimura

Masayuki Tsuchiya

Saki Tajima

An image forming apparatus includes an image forming unit and developing containers. The image forming unit includes developing stations to form an image on a print medium with toners, based on input image data. The developing containers contain the toners and are attachable to and detachable from the developing stations. The developing containers include a first developing container containing a first toner and a second developing container containing a second toner having a higher luminescence intensity under invisible light than the first toner. The first toner and the second toner are toners that form an image having a higher luminescence intensity under the invisible light than under visible light. The image forming unit adheres the second toner to the print medium before adhering the first toner when the image forming unit superimposes the first toner and the second toner one atop another on the print medium.

Image forming apparatus, image forming method, and printed material

A power supply device includes: a DC power supply that generates a DC voltage of a variable value and outputs the DC voltage; an AC power supply that generates an AC voltage of a variable value, and superimposes the AC voltage and the DC voltage to generate a superimposed voltage for output; and a control circuit. The control circuit start giving the DC power supply an instruction to output the DC voltage, and start giving the AC power supply an instruction to output the AC voltage for restricting output of the DC voltage. The control circuit controls an absolute value of the superimposed voltage to be smaller than or equal to a predetermined value in a predetermined period from a time when the giving of the instruction to output the AC voltage is started to a time when the restricting of the output of the DC voltage is started.

Power supply device, image forming apparatus, and non-transitory recording medium with a superimposed voltage including an AC voltage and a DC voltage

A motor control device for driving a motor, the motor control device includes: a receiver configured to receive, from an external source, a drive command containing a rotation direction command designating a rotation direction of the motor; a storage part configured to store the rotation direction of the motor indicated by the rotation direction command when the motor is driven using the rotation direction command; and a controller configured to, when a new piece of the drive command is received from the external source, control rotation reversing of the motor based on a rotation direction of the motor indicated by the rotation direction command contained in the received piece of the drive command and the rotation direction of the motor stored in the storage part.

Motor control device, driving device, conveyor device, image forming apparatus, motor control method, and computer-readable recording medium

A vehicle control system determines a travel priority of a vehicle based on a travel condition of the vehicle. In response to detection of an oncoming vehicle ahead of the vehicle along a single guide path, the system compares between the travel priority of the vehicle, and a travel priority of the oncoming vehicle, and selects one of the vehicle and the oncoming vehicle as a vehicle to change a traveling route, to allow the unselected vehicle to continue traveling along the single guide path.

Driverless vehicle, and apparatus, system, and method of vehicle control

A motor control device includes: an electric-current detection unit configured to detect an electric current that flows through a motor at a time when the motor is not to be driven; a voltage-polarity determining unit configured to determine polarity of a voltage corresponding to the detected electric current; and an operating-state management unit configured to perform control of stopping the motor depending on the polarity of the voltage.

Motor control device, sheet conveying device, and image forming apparatus

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Kanagawa, Japan

Kentaroh Kurosu