Ricoh Company, Ltd.

Canon Kabushiki Kaisha

Amada Company, Limited

Amada Holdings Company Ltd.

Renesas Electronics Corporation

Naito, Kinshiro

Hiroshi Nakai

Kunio Hasegawa

Shinya Tanaka

Hiroaki Matsuda

Hiroto Higuchi

Yasuaki Iwamoto

Fumihiro Sasaki

Masahide Yamashita

Noriko Sato

Masato Iio

Kazuhiko Watanabe

Maiko Kondo

Shigeru Endo

Taichi Urayama

Bing Shu

Yoshinori Nakagawa

Nozomu Tamoto

Takahiro Kiuchi

Atsushi Takahashi

Takatoshi Nakano

Yasuo Suzuki

Takuya Fukasawa

Tetsuyo Ohashi

Ichiro Kadota

Jun Yura

Takahiko Tokumasu

Kohichi Ohshima

Naoyuki Ozaki

Atsushi Inoue

Kazumi Suzuki

Nekka Matsuura

Hideki Kosugi

Kei Yasutomi

Hirokatsu Suzuki

Hiroyuki Kobayashi

Toshiyuki Kabata

Toshiaki Tokisawa

Masayuki Shimizu

Masaaki Matsuura

Kumi Hasegawa

Kazuhito Watanabe

Kohsuke Yamamoto

Masanori Kaneko

Takuya Sekine

Takashi Matsumoto

Kazuo Ohyama

Kinshiro Naito

Atsushi Miyahara

Masanori Suzuki

Hirofumi Hirano

Kosuke Yamamoto

Tsunemi Sugiyama

Yoshinori Yamaguchi

Koichi Kato

Hiroshi Mizusawa

Kumiko Hatakeyama

Hiroyuki Sugiyama

Tomoyuki Ichikawa

Kenji Sugiura

Yukio Takahashi

Hiroyuki Tanaka

Yasushi Nakazato

Tetsuro Suzuki

Atsushi Kurokawa

Hitoshi Yamamoto

Tadashi Kasai

Akira Kida

Tomonori Sato

Manabu Yamazoe

Mitsuo Aoki

Masanori Kawasumi

Kazuhisa Sudo

Yoshinori Watanabe

Shinichiro Yagi

Shinya Asano

Shinji Kanemitsu

Hiroshi Ikuno

Yoichi Tosaka

Emiko Shiraishi

Makoto Yasuda

Shin Kayahara

Naohito Shimota

Masahiko Shakuto

Shigeyoshi Onoda

Shuji Tanaka

Ryuji Yoshida

Masahiro Ohmori

Shigekazu Enoki

Takaaki Ikegami

Takamasa Ozeki

Tsutomu Kawai

Kenichi Moriya

Daichi Yamaguchi

Keiji Takahashi

Yoshitaka Okamura

Koichi Katoh

Mutsuki Morinaga

Takuya Suganuma

Jun Hitosugi

A process cartridge includes an electrostatic latent image bearer, a charging roller, and a brush roller. The charging roller charges the electrostatic latent image bearer and includes a conductive support and a resin layer covering the conductive support and defining an outermost surface layer of the charging roller The brush roller cleans the charging roller and includes fiber bristles. The charging roller and the brush roller satisfy the following relational expressions 1 and 2:

Process cartridge and image forming apparatus incorporating the same

An image forming apparatus includes a latent image bearer, an intermediate transferor, a primary transferor, a second transferor, and a cleaning blade. The latent image bearer has a surface onto which a lubricant comprising zinc stearate is supplied. The intermediate transferor has a surface onto which the toner image is transferred, the surface including an adhering region to which the lubricant from the latent image bearer adheres. The cleaning blade cleans the surface of the intermediate transferor including the adhering region, after the toner image is secondarily transferred. In a region outside at least a horizontal A4 sheet passing width on the intermediate transferor, a ratio of a peak area derived from zinc stearate to a peak area derived from the intermediate transferor in a difference spectrum between attenuated total reflection (ATR) infrared absorption spectrums of the intermediate transferor in an unused state and after use is 0.892 or less.

Image forming apparatus

A printing apparatus includes: an apparatus body held by a user and provided with a printing unit configured to perform printing in a case of being moved in a first direction; a first guide unit configured to guide the movement in the first direction; a second guide unit rotatably held with respect to a structure fixed to the apparatus body and configured to guide movement in a second direction intersecting with the first direction; and a drive unit configured to be connected with the second guide unit and to rotate the second guide unit so that the structure moves to the second direction relative to the second guide unit by driving of the drive unit.

Handheld printing apparatus

Provided is a printing apparatus including: a guide unit configured to guide movement, in a first direction, of the printing apparatus held and moved by a user; a printing unit configured to print an image onto a print medium with the movement in the first direction; a second guide unit configured to guide movement of the printing apparatus in a second direction crossing the first direction; a detection unit configured to detect a relative moving amount between the printing apparatus and the print medium; and a control unit configured to cause a notification unit to make a predetermined notification according to a first distance in the first direction between the printing unit and the detection unit and a position at which an operation of printing a single line by the printing unit is completed.

Provided is a manually scanned printing apparatus capable of suppressing deterioration in image quality. To provide this, a support portion of a guide roller and a support portion of a downstream position detection sensor are configured to be displaceable relative to each other in a direction substantially orthogonal to the printing surface of a print medium to be printed.

Provided is a manually moved printing apparatus capable of suppressing deterioration in printing quality even if the printing apparatus is lifted or tilted. To provide this, a Y-direction sensor support shaft formed integrally with a downstream position detection sensor case and having a rotation axis in the direction of arrows is rotatably supported by a downstream sensor case support arm.

Provided is a printing apparatus including: a holding unit configured to be held by a user to move the printing apparatus; a printing unit configured to print an image onto a print medium according to a movement of the printing apparatus; a guide unit configured to guide the movement of the printing apparatus; a first detection unit configured to detect a relative moving amount between the printing apparatus and the print medium; a second detection unit provided at a position different from a position of the first detection unit; and a displacement unit configured to displace the first detection unit from a state where the first detection unit and the second detection unit are both in contact with the print medium into a state where the first detection unit is separated from the print medium.

Hanheld printing apparatus

The inkjet printing apparatus includes: a printing unit to eject ink; a wiping unit capable of wiping an ejection opening surface by moving relative to the ejection opening surface with an opening, adapted to be in contact with the ejection opening surface, put in contact with the ejection opening surface; a suction unit connected to the wiping unit and configured to apply negative pressure to the ejection opening surface via the opening; a moving unit to move the wiping unit relative to the ejection opening surface; and a control unit to perform suction wiping operation by wiping the ejection opening surface with the wiping unit while applying negative pressure to the ejection opening surface. The control unit determines the timing to perform the suction wiping operation, and, according to the timing, determines a moving speed of the moving unit and a pressure value caused by the suction unit.

Inkjet printing apparatus and recovery method

A cleaning blade includes a blade member including a ridgeline portion. The ridgeline portion contains polyrotaxane. A sheet conveyance roller includes a core and a surface layer. The surface layer contains polyrotaxane.

Cleaning blade, sheet conveyance roller, process cartridge, and image forming apparatus

An image forming apparatus includes an image bearer to bear a latent image, a charging device to charge the image bearer, a developing device to develop the latent image on the image bearer, a cleaning device to clean a surface of the image bearer, a target component including at least one of the image bearer, the charging device, the developing device, and the cleaning device, and a temperature change suppression member opposed adjacent to or disposed in contact with an outer peripheral face of the target component. The temperature change suppression member suppresses a temperature change of the target component.

Image forming apparatus with a temperature change suppressor

An inkjet printing apparatus includes: a print head having an ejection opening surface on which an ejection opening for ejecting ink is provided; a wiping unit configured to wipe the ejection opening surface; a moving unit configured to move the wiping unit in a first direction; and a treatment liquid holding portion having a holding member for holding a treatment liquid and an applying member for applying the treatment liquid to the wiping unit by coming into contact with the wiping unit, wherein a plurality of treatment liquid holding portions are arranged in a second direction crossing the first direction such that adjacent treatment liquid holding portions are not in contact with each other.

Inkjet printing apparatus and treatment liquid holding unit

Provided are a liquid ejection apparatus and a maintenance apparatus capable of suppressing unintended movement of a wiping unit. The maintenance apparatus includes: a wiping unit configured to wipe the ejection opening surface of a liquid ejection head in which ejection openings over a length corresponding to the width of a print medium are formed; and a lock member configured to restrict movement of the wiping unit from a position to which the wiping unit is evacuated from the ejection opening surface.

Liquid ejection apparatus and maintenance apparatus

An objective of the present invention is to provide an inkjet printing apparatus and an ink filling method capable of restraining a decrease in its availability. For that purpose, in a case where a predetermined negative pressure (determination pressure) is not reached within a predetermined time (determination time) in normal filling operation (first filling operation), it is assumed that a leakage occurs in a cap member, and second filling operation is performed.

Inkjet printing apparatus and ink filling method

There is provided a liquid ejecting apparatus including: a print head having an ejection opening surface on which an ejection opening array for ejecting a liquid is provided in a first direction; a cap unit for protecting the ejection opening array; a moving unit configured to relatively move the print head and the cap unit; a first positioning portion for locating the print head and the cap unit in a first relative position where the print head and the cap unit come into contact with each other; and a second positioning portion for locating the print head and the cap unit in a second relative position where the print head and the cap unit come into contact with each other, the second relative position being different from the first relative position.

Liquid ejecting apparatus

Growing community of inventors

Kanagawa, Japan

Hiroshi Nakai