Ricoh Company, Ltd.

Tsuyoshi Endo

Toshihiro Shimada

Hiroki Ishimitsu

Junichi Kawase

Kouta Hirakawa

Masahiro Ishida

Hiroshi Ishii

Naoki Matsuda

Joh Ebara

Yoshihide Ohta

Kohta Takenaka

Tetsuji Nishikawa

Junichi Murano

Shoji Asanuma

Shiro Akama

Yusuke Funayama

Tatsuya Suzuki

Kohta Hirakawa

Hiroshi Mori

Makoto Suzuki

Yuki Sato

Yasuhiro Hattori

Yuta Ueda

Tomofumi Harada

Norio Michiie

Gakushi Tanaka

Hiroomi Motohashi

Hiroyasu Sumida

Toshiya Tagawa

Takahiko Uno

Moriyuki Koike

Hisashi Ishiguro

Kouichi Kanaya

Sakie Higuchi

Tsutomu Osawa

Toshiki Yamashita

Yusuke Masu

Masaki Kimura

An image forming apparatus includes an image forming device, a sheet feeder, and a housing. The image forming device forms an image on a recording medium. The sheet feeder stores the recording medium and conveys the recording medium toward the image forming device. The housing accommodates an electrical device in the housing. The housing includes a housing body and a drawer that is drawn out from the housing body. The drawer includes a bottom plate on which the electrical device is placeable and a partition above the bottom plate on which the electrical device is placeable.

Image forming apparatus

A drawer mechanism includes a housing, a drawer, and a connector. The housing has at least one open side. The drawer is incorporated in the housing and insertable into and drawable from the open side of the housing. The connector connects the housing and a rear side of the drawer in a drawing direction of the drawer. The connector includes a first pivoting member, a second pivoting member, and a biasing member. The biasing member is disposed at a contact portion between the first pivoting member and the second pivoting member and configured to bias the first pivoting member and the second pivoting member in directions in which the first pivoting member and the second pivoting member are closed.

Drawer mechanism and image forming apparatus

A housing includes a body portion, including an opening, and a cover portion that covers the opening. The cover portion includes a first cover and a second cover that is perpendicular to the first cover. The first cover includes a cover body that is platy. A projection projects from the cover body. A first attachment is mounted on the projection and attaches the first cover to the body portion. A second attachment is disposed on the first attachment and attaches the second cover to the first cover.

Housing and image forming apparatus

A lock lever structure includes a shaft; a cam attached to the shaft to fit a different-shaped portion of the shaft to prevent rotation of the cam in a circumferential direction of the shaft, the different-shaped portion having a different shape in cross section from a round portion of the shaft; a lever having an inner hollow cylindrical portion larger than an outline of the shaft and attached to the shaft to be rotatable in the circumferential direction of the shaft; a spring attached to the shaft to press the cam and the lever in an axial direction of the shaft; and a retainer attached to the shaft to retain the spring, the cam, and the lever to the shaft. The cam has at least two valley portions. The lever has a contact portion to contact the cam. The contact portion has a base shape.

Lock lever structure, unit, and image forming 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

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

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

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

An image forming apparatus includes a drawer unit configured to be drawn out from a body of the image forming apparatus. The drawer unit includes a carriage path for carrying a recording medium, a lock unit configured to lock the drawer unit in the body, a driving unit configured to drive the lock unit, the driving unit including at least a driving source, and a drawer unit cover configured to cover at least the drawer unit. The drawer unit cover is a part of an outer cover of the body arranged on a side in a drawing direction of the drawer unit. The drawer unit cover is attached to the drawer unit so that the drawer unit cover is removed from the drawer unit in a state where the drawer unit is attached to the body.

Image forming apparatus having drawer unit

An image forming apparatus includes an image forming part configure to form an image on a sheet of paper; and a paper ejection tray, provided above an image forming part, including a supporting part configured to support the sheet of paper ejected after having the image formed thereonto by the image forming part, and a radiation opening configured to radiate therethrough heat from the image forming part to the outside air. The radiation opening is provided lower than the supporting part.

An image forming apparatus for detecting and eliminating avoidable image reading operations includes a scanner for reading an original document, a memory for storing read image data, a printer for forming an image in accordance with the image data read from the memory, a ten-key pad for inputting instructions specifying a total number of sets of copies to be made, various functions to be performed by the apparatus for changing how the copying is performed and a sample set command by which the apparatus enters into a sample set command mode wherein one copy of the original document is output as a sample copy, and a controller for determining whether to use the image previously stored in the memory to output the rest of the total number of sets of copies to be made or performing an operation of reading the original document again depending upon types of functions input via the ten-key pad during the sample set command mode.

Image forming apparatus and method for detecting and eliminating

A controller accurately discriminates a copying-inhibited document prepared by using paper on which a copying-inhibited pattern is printed or copied on the entire surface, executes the copying inhibition control, detects a hardware error, and executes the copying inhibition control upon detection of the hardware error by recognizing a copied document as a copying-inhibited document and executing copying inhibition control when a copying-inhibited document detected signal is inputted during an operation for reading a copied document from the copying-inhibited document discriminator, and also by determining that a hard error has occurred in the copying inhibition discriminating board, giving a warning through an operation displaying unit, and executing a copying inhibition control when a copying-inhibited document signal or a copying-inhibited document not-detected signal is inputted during a period other than that for reading a copied document.

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Kanagawa, Japan

Tsuyoshi Endo