Ricoh Company, Ltd.

Shingo Nagatsuka

Takuya Murata

Motoharu Takahashi

Yoshihiro Asano

Kentaroh Kurosu

Hiroshi Maeda

Yoichi Ito

Yoshinobu Takeyama

Motohiro Kawanabe

Yoshiko Ogawa

Kimihiro Tanaka

Takuya Etoh

Wataru Sugawara

Tsukasa Matsuoka

A fabrication system for fabricating a three-dimensional object includes processing circuitry. The processing circuitry estimates, according to a fabrication condition and fabrication data, a three-dimensional object to be fabricated according to the fabrication data and corrects the fabrication data according to an estimation result of the three-dimensional object estimated by the processing circuitry.

Fabrication system, fabrication estimation system, information processing apparatus, fabricating apparatus, fabricating method, and recording medium

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 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

An image forming device includes an image support object, a charging unit, an exposure unit, and a developing unit. The image forming device further includes a monitoring unit that sequentially updates a count value to a new count value according to a rotation state and a stop state of the image support object, and an intermittent driving unit that intermittently rotates the image support object according to the new count value generated by the monitoring unit after an image formation operation to form the toner image on the image support object surface is completed.

Image forming device with an intermittent driving unit and computer-readable recording medium executed by the image forming device

An out-of-color registration table containing a correspondence of amounts of out-of-color registration detected by an out-of-color-registration amount detector and machine states detected by a machine state detector is prepared. The out-of-color registration table is updated when there is a change in the current machine state.

Color image forming apparatus, color image forming method, computer program product

A patch-pattern forming unit causes an image forming unit to form a patch pattern including a plurality of patches on a conveying member. A detecting unit detects the patch pattern formed on the conveying member. An adjusting unit adjusts an image forming condition of the image forming unit based on a result of detection by the detecting unit. The patch pattern has a length substantially equal to a distance between a patch-pattern start position, which is located at a space corresponding to at least a predetermined margin of a recording medium from a position of the image, and a position of the detecting unit.

Image forming apparatus, image forming method, and computer program product

A first calculating unit calculates an allocation time required for forming a patch pattern. A second calculating unit calculates a maximum patch-pattern length of the patch pattern that can be formed within the allocation time based on the number of patch patterns that can be formed within the allocation time. A setting unit calculates a difference between an environmental temperature around the image forming apparatus and an environmental temperature at which the image forming condition stored in the storing unit is set, and newly sets an image forming condition for the patch patterns based on a result of comparing the difference with a predetermined threshold.

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Osaka, Japan

Shingo Nagatsuka