Ricoh Company, Ltd.

Kazufumi Kimura

Takashi Fujita

Akira Yoshida

Kohta Fujimori

Kazuhiko Watanabe

Nozomu Tamoto

Kayoko Tanaka

Nobutaka Takeuchi

Hitoshi Iwatsuki

Akira Saito

Yasuyuki Yamashita

Yoshihiro Fujiwara

Yasutada Shitara

Shinnosuke Koshizuka

Shinichi Akatsu

Hideyasu Seki

Tetsuya Muto

Yuuichiroh Uematsu

Natsumi Matsue

Tomohide Takenaka

Keita Sone

Kiichi Kamoda

Keita Gotoh

Yuushi Hirayama

Ryota Kidera

Masanori Moro

Yuuki Kamon

Yuka Kanatani

Yuuya Endoh

A fabrication method includes laminating a fabrication material to form an object, and applying a release material on a surface of the object to form a release layer on the surface of the object. A surface free energy of the release material is equal to or smaller than 25 mN/m.

Three-dimensional object fabrication method, fabrication apparatus, and fabrication system

An image forming apparatus includes a photoconductor on which an electrostatic latent image is formed by irradiation of the photoconductor with light, a charger, a developing device, a transfer device, a charge removal execution determiner, and a power supply controller. The charger receives a superimposed voltage of a DC voltage and an AC voltage to charge the photoconductor. The developing device develops the electrostatic latent image on the photoconductor into a toner image. The transfer device transfers the developed toner image to a recording medium. The charge removal execution determiner issues a charge removal command when a flow of electric charge from the transfer device into the photoconductor has occurred in an image forming outputting operation. The power supply controller applies only the AC voltage to the charger for a predetermined period in a state in which the photoconductor is rotated, when the charge removal command is issued.

Image forming apparatus executing charge removal for photoconductor thereof and control method for same

An image forming apparatus includes a developer bearer and a toner pattern bearer rotatable in a given direction of rotation to bear an adjustment toner pattern formed with the developer bearer. A toner pattern detector detects an amount of reflection light reflected by the adjustment toner pattern on the toner pattern bearer. A controller performs an adjustment mode to convert the detected amount of reflection light into a toner adhesion amount of toner of the adjustment toner pattern adhered to the toner pattern bearer. The controller forms an adhesion amount suppressing toner image on an upstream region on the toner pattern bearer that is upstream from the adjustment toner pattern in the direction of rotation of the toner pattern bearer. The upstream region is defined by a circumferential length of the developer bearer in the direction of rotation of the toner pattern bearer.

Image forming apparatus and image forming method

An image forming apparatus includes an endless belt-shaped image bearer that is rotatably supported and entrained around rollers; a transfer member positioned to contact an outer surface of the image bearer; a transfer device to transfer a toner image conveyed while being carried on the outer surface of the image bearer onto a transfer medium conveyed between the image bearer and the transfer member; a toner image sensor to detect the toner image transferred onto the transfer medium; and a conveyance speed controller to fine-tune a conveyance speed of the transfer medium. Based on fine-tuning data of the conveyance speed controller, a detection result of the toner image sensor is corrected and image forming conditions are corrected based on the corrected detection result.

Toner pattern density correction in an image forming apparatus

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Kanagawa, Japan

Kazufumi Kimura