Ricoh Company, Ltd.

The University of Tokyo

Fujifilm Corporation

Asahi Denka Kogyo Kabushiki Kaisha

Toshihiro Shimada

Masahiro Ishida

Naoki Matsuda

Kohta Takenaka

Tsuyoshi Endo

Hiroshi Ishii

Hiroki Ishimitsu

Junichi Kawase

Joh Ebara

Yoshihide Ohta

Tetsuji Nishikawa

Kouta Hirakawa

Yusuke Funayama

Kazuhiro Kobayashi

Hidehiko Fujiwara

Toshiyuki Uchida

Junichi Murano

Shoji Asanuma

Kohta Hirakawa

Makoto Suzuki

Kazunori Bannai

Wataru Hojo

Yusuke Masu

Kenji Ishii

Tatsuya Igarashi

Takashi Kato

Kaoru Yoshino

Yasufumi Takahashi

Akira Kojima

Kanae Amemiya

Yasuo Niikura

Takeshi Akai

Yuta Ueda

Tadashi Matsuoka

Masaru Yamagishi

Yu Wakabayashi

Yui Ishii

Satoru Takano

Hikaru Fukasawa

Satoshi Aizawa

Yasuo Okutomi

Yousuke Edo

Atsunori Yoshida

Ryo Kanno

Yasunori Hino

Hidehiko Maeda

Atsushi Koma

Hiroshi Komuro

A sheet processing apparatus includes a sheet processing unit, a sheet feeder, and a unit cover. The sheet processing unit inserts an inner sheet into a two-ply sheet in which two sheets are overlapped and bonded together at one ends as a bonding portion. The sheet feeder is disposed above the sheet processing unit and is movable to open to expose the sheet processing unit. The sheet feeder feeds one of the two-ply sheet and the inner sheet. The unit cover is disposed above the sheet processing unit and opens to expose the sheet processing unit.

Sheet processing apparatus

A holding mechanism for an opening and closing detection device includes a cam, a torsion coil spring, and a pressing member. The cam is rotatably supported in a housing. The torsion coil spring is attached to the cam or an inside of the housing and includes two ends extending in two directions. The pressing member biases one end of the two ends of the torsion coil spring and bring the other end of the two ends of the torsion coil spring into contact with the cam to apply a load to the torsion coil spring. The pressing member is attached to an outside of the housing while biasing the other end of the two ends of the torsion coil spring through an opening of the housing.

Holding mechanism for opening and closing detection device and image forming apparatus including holding mechanism

A device includes a sound source, an electric board, an exterior member, an electric board container box, and a sound absorber. The sound source generates a sound at a time of operation. The electric board has a circuit mounting an electrical component. The exterior member surrounds the sound source and the electric board. The electric board container box houses the electric board. The sound absorber is at least partially disposed inside a virtual space corresponding to a thickness of the electric board container box in an interior space of the device.

Device and image forming apparatus

A stacking apparatus includes a conveyance unit, a stacking unit, and a separation member supply unit. The conveyance unit conveys sheets for circuit board. The stacking unit stacks the sheets. The separation member supply unit supplies a separation member to separate the stacked sheets at any position. The separation member supply unit places the separation member on the sheet in being conveyed.

Stacking apparatus

A sound absorbing device including a Helmholtz resonator having a projection part which includes a shape of protruding from an outer wall surface of a communicating part forming plate among the communicating part forming plate and a cavity forming member that are cavity part forming members forming a cavity part of the Helmholtz resonator, and surrounding an opening of a communicating part that causes the cavity part to communicate with the outside.

Sound absorbing device, electronic device, and image forming apparatus

According to an aspect of the invention, an image forming apparatus includes an apparatus body, a sound absorbing device utilizing a Helmholtz resonator, and a hinged exterior cover operable to open and close relative to the apparatus body. The hinged exterior cover is a hinged cover configured to pivot about a pivot shaft arranged at a lower end portion of the hinged exterior cover. At least a part of the hinged exterior cover has a multiplex structure made by overlaying a plurality of plate-like members on one another. The sound absorbing device is formed by utilizing space between two plate-like members of the plurality of plate-like members making up the multiplex structure as a cavity of the Helmholtz resonator.

Image forming apparatus having a sound absorber

An electronic device comprises: a shielding object that is arranged at least in a plurality of directions and shields noise; and a Helmholtz silencer that is arranged in a direction where the shielding object does not exist, the shielding object and the silencer being arranged with respect to a noise source causing noise such as a driving source that is arranged inside an apparatus body, wherein a neck portion of the Helmholtz silencer is directed to the noise source, a plurality of such Helmholtz silencers are provided to correspond to at least two kinds of frequencies, and installed number of the Helmholtz silencers corresponding to at least two kinds of the frequencies respectively, is made different depending on a distance from the noise source.

Electronic device and image forming apparatus

An image forming apparatus includes a plurality of latent image bearers, a latent image writer, a plurality of developing units, a primary transfer unit, a secondary transfer unit, an adjuster, a pattern image formation controller, a color deviation detector, a color deviation correction controller, and an image-formation-mode setting unit. The color deviation correction controller executes color deviation correction control in the separated state. The image-formation-mode setting unit sets a normal linear-velocity image formation mode in which an image is formed at a normal linear velocity and at least one non-normal linear-velocity image formation mode including a low linear-velocity image formation mode in which an image is formed at a low linear velocity slower than the normal linear velocity. A plurality of image formation velocities including the normal linear velocity and the low linear velocity is set, and an execution timing of the color deviation correction control in image formation at the normal linear velocity and an execution timing of the color deviation correction control in image formation at the low linear velocity are set independently from each other.

Image forming apparatus utilizing a plurality of image formation velocities

A sound absorbing device including a Helmholtz resonator also includes a projection part having a shape of protruding from an outer wall surface of a communicating part forming plate among the communicating part forming plate and a cavity forming member that are cavity part forming members forming a cavity part of the Helmholtz resonator, and surrounding an opening of a communicating part that causes the cavity part to communicate with the outside.

An image forming apparatus includes an image forming unit configured to form an image; a drawer unit configured to be pulled out from a body of the image forming apparatus; a first lock unit configured to receive power from a power supply and perform at least one of lock and unlock of the drawer unit with respect to the body; and a second lock unit configured to perform lock and unlock of the drawer unit with respect to the body by a mechanical operation performed by an operator.

Image forming apparatus with locking drawer unit

Image forming apparatus

A sound absorber includes a duct member constituting a resonance pathway, the duct member including a pathway portion communicating ends of the duct member; a base member including a concave portion; and a cover member including a neck in which to insert the duct member. The cover member covers the concave portion of the base member, and the cover member combined with the base member forms a resonance space having a volume V. The resonance pathway has dimensions of a length LH and a cross-sectional area SH and communicates the resonance space and an exterior of the sound absorber. The sound absorber has a resonance frequency fH determined by fH=(c/2&#x3c0;)&#xb7;(SH/V&#xb7;LH)and absorbs sound having the resonance frequency fH, where c represents sound velocity.

Sound absorber and image forming apparatus incorporating same

The image forming apparatus includes an image forming section; a conveyance path to convey a recording medium to the image forming section; a drawer unit including the conveyance path and configured to be pulled out relative to the apparatus; an electrical cable to electrically connect the drawer unit and an interior of the apparatus even when the drawer unit is pulled out from the apparatus; and a cable holder (a first regulating member) to ensure that that the cable is securely prevented from protruding from the drawer unit. According to the present invention, the electric cable is prevented from running off from the drawer unit due to the folding of the cable caused by the regulating member, so that the electric cable is prevented from getting hung up on the parts disposed in the body.

Image forming apparatus including drawer with variable length cable holder

An image forming apparatus having a drawer unit that includes therein a paper-feeding conveying path for conveying a recording medium conveyed from a paper feeding unit on which the recording media are stacked to an image forming unit and/or a discharge conveying path for conveying the recording medium on which an image has been formed to a discharging unit, and be drawn out from an apparatus main body; a lock unit that locks the drawer unit to the apparatus main body; a straddle detecting unit that detects whether the recording medium straddles a conveying path in the apparatus main body and a conveying path in the drawer unit; and a controller that controls the lock unit to lock the drawer unit to the apparatus main body when the straddle detecting unit detects the straddle.

Image forming apparatus having a drawer unit with a paper-feeding conveying path therein

Growing community of inventors

Tokyo, Japan

Toshihiro Shimada