Ricoh Company, Ltd.

Hitachi Koki Co., Ltd.

Ricoh Printing Systems, Ltd.

Hitachi Printing Solutions, Ltd.

Yasushi Hashimoto

Shingo Takai

Yuuji Ohmura

Akira Terakado

Tatsuya Shiraishi

Yoshikane Matsumoto

Hironori Numata

Jun Ogino

Koji Kato

Sho Sawahata

Yasuyuki Tsuji

Kazuhiko Kawasaki

Makoto Kurosawa

Akitomo Kuwabara

Hiroshi Suzuki

Tetsuya Ohba

Isamu Komatsu

Genichiro Kawamichi

Kahei Nakamura

Minoru Seino

Masato Miwa

Takashi Nakamura

Yuichiro Suzuki

Yasuhisa Katoh

Satoshi Aizawa

Masami Takeshita

Masaaki Koseki

Masaru Kawamoto

Hidehisa Shibasaki

Hironobu Murai

Satoshi Takanashi

Masaru Hoshina

Tatsuo Matsuda

Motoji Kurobane

Hiroaki Yonekawa

Michihiro Matsuda

Yasushi Kimiwada

Kohichi Uchida

Kohei Funada

A conveying device includes a rotator, a drier, and a conveyance direction changer. The rotator winds a web-shaped recording medium around a predetermined region of an outer peripheral surface of the rotator with one side of the web-shaped recording medium facing outward and conveys the recording medium with rotation. The drier is disposed downstream from the rotator in a direction of conveyance of the recording medium, to dry and convey the recording medium. The conveyance direction changer is disposed on a conveyance path of the recording medium between the rotator and the drier. The conveyance direction changer has an outer peripheral surface that includes an opposed region opposed to the one side of the recording medium. The opposed region has openings to blow gas toward the one side of the recording medium. The rotator and the drier are disposed at positions not overlapping with each other in a plan view.

Conveying device, image forming apparatus, liquid discharge device

A treatment-liquid application apparatus includes a rotary treatment-liquid applicator, a rotary treatment-liquid supplier, a transfer rotator, and a contact load adjuster. The contact load adjuster adjusts a contact load of the rotary treatment-liquid supplier on the treatment-liquid applicator. After feeding of a recording medium is initiated by contact between the treatment-liquid applicator and the transfer rotator, an acceleration time until a feed speed of the recording medium reaches a constant speed during printing is set. Before feeding of the recording medium is initiated, the rotary treatment-liquid supplier contacts the treatment-liquid applicator and imparts a contact load L. During an acceleration operation of the recording medium after feeding of the recording medium is initiated, the transfer rotator contacts the treatment-liquid applicator via the recording medium and imparts a contact load L, and the contact load adjuster adjusts the contact load Lto be greater than the contact load L

Treatment-liquid application apparatus and image forming system incorporating same

An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.

Image forming apparatus and assembly system of image forming apparatus

A treatment liquid coating apparatus includes a conveyance member to convey a recording medium; a coating roller, to apply treatment liquid on the recording medium, driven to rotate with the conveyance of the conveyance member; a pressure roller to press against the coating roller to hold the recording medium that is placed between the coating roller and the pressure roller; and a reciprocating mechanism to reciprocate the coating roller in a width direction of the recording medium during printing.

Coating apparatus and image forming system

An image forming apparatus includes a guide member configured to guide a sheet to a nip section between a heating roller and a pressing roller disposed close to the upstream side of the rollers and on the pressing roller side. A downstream end of the guide member is disposed on the heating roller side with respect to the nip surface between the rollers so that a header of the sheet to be printed is in contact with the heating roller first, and a downstream end of the fixing device introduction guide member is concavely curved.

Image forming apparatus

A sheet post process device with a stapler mechanism includes a conveying path configured to convey a sheet on which an image is formed to the stapler mechanism; a first sensor disposed along the conveying path and configured to detect a moving position of the sheet; and a tray in which the sheets are stacked to undergo a stapling process; and a rotary cam having a spiral shape disposed at a conveying path outlet through which the sheet is ejected from the conveying path to the tray. When the sheet passes through the conveying path outlet, the cam rotates and comes into contact with the sheet to move the sheet to the tray.

Pressdown cam for post processing device

According to an aspect of the present invention, there is provided a sheet feeding device including: a tray holding sheets; a chamber having an opening and generating a negative pressure thereinside; a suction belt that suctions and conveys a first sheet from the sheets and that is configured to be rotatable along with the chamber and deformable into a concave shape along with the opening; a regulating member disposed inside the opening to regulate a concaving amount of the suction belt; a sheet gate disposed in a sheet feeding passage to be opposed to the suction belt and configured to retreat when contacted by the suction belt; and a nozzle that blows air toward the sheet and toward the suction belt.

Sheet feeding device with concave suction belt

An air current distributing apparatus includes: a cylinder having a first air port communicated with a supply source of an air current and also having a second, a third, a fourth and a fifth air port respectively communicated with an injection port of the air current; a main rotor rotated in the cylinder; and a subrotor rotated in the cylinder, wherein the main rotor has a cutout portion for selectively communicating the first air port with at least one of the second and the third air port according to the rotary position, and the subrotor has a cutout portion for selectively communicating the first air port with at least one of the fourth and the fifth air port according to the rotary position. When the air current distributing apparatus is used, a plurality of air currents are formed by one blower.

Pneumatic type paper feeding apparatus

A sheet feed apparatus including: a sheet storage tray that store a plurality of sheets; an suction belt that suctions an uppermost one of the sheets and conveys the sheet along a sheet conveyance surface; a nozzle including, first ejection openings that are disposed on both side ends across a substantially center portion of the suction belt and eject air toward the plurality of sheets, and a second ejection opening that is disposed at the substantially center portion of the suction belt and ejects air toward the suction belt; and a projecting member that projects downward with respect to the sheet conveyance surface, the projecting member being provided at a position opposite the nozzle with respect to the suction belt.

Sheet feed apparatus

A sheet skew correcting apparatus, incorporated in a printer or the like to correct a phenomenon of obliquely feeding a sheet called skewing. The apparatus includes a transporting path in which the sheet is transported, a pair of registration rollers, a pair of timing rollers disposed upstream from the registration rollers, and a paper guide having a first and a second curved portion and constituting the transporting path. When a sheet fed into the transporting path abuts against a contact point of a registration roller pair, the sheet is further transported by an arbitrary distance in the sheet transporting direction. First and second curves are then formed in the sheet in the first and second curved portions. Then the registration roller pair is rotated in the direction opposite to the sheet transporting direction, the front end of the sheet uniformly abuts against the contact point of the registration roller pair to correct skew.

Sheet skew correcting apparatus and image forming apparatus

A paper treating unit includes: a paper loading table for loading paper; a first paper aligning member that regulates position of the paper by sliding back and forth in the paper proceeding direction; a second paper aligning member disposed upstream of the first paper aligning member in the paper proceeding direction to regulate the position of the paper in the paper proceeding direction; a third paper aligning member disposed along the paper proceeding direction to regulate the position of the paper in a width direction perpendicular to the paper proceeding direction by sliding back and forth in the direction perpendicular to the paper proceeding direction; and a position detecting unit that detects the position of the first to third paper aligning members. The first and third paper aligning members are disposed independently of the paper loading table.

Paper treating unit and image forming system using the same

An image forming device includes an upstream-side sheet transport pathway, a plurality of downstream-side sheet transport pathways, and a pathway switching mechanism. The plurality of downstream-side sheet transport pathways diverge from the upstream-side sheet transport pathway at a divergence point. At the divergence point, the pathway switching mechanism selectively guides sheets that were transported following the upstream-side sheet transport pathway to one of the plurality of downstream-side sheet transport pathways. The pathway switching mechanism includes a pair of upstream-side gate members and a gate member pivoting unit. The pair of upstream-side gate members include a pair of pivot shafts and a pair of gates. The pair of pivot shafts are disposed with the sheet transport pathway interposed therebetween. Each of the pair of gates is pivotable around a corresponding one the pair of pivot shafts and extends substantially toward the downstream-side sheet transport pathways. The gate member pivoting unit pivots the pair of gates substantially simultaneously and substantially in the same direction.

Image forming device

A paper ejection apparatus equipped on the latter stage of an image formation apparatus in a print apparatus. The paper ejection apparatus includes a paper stack table to stack papers transported in a paper transport direction from the image formation apparatus, a table drive for moving up and down the paper stack table, a controller for controlling the table drive, top face detection means for detecting the top face position of the stacked papers, and abutment members for sliding to align the papers ejected onto the paper stack table in the paper transport direction and in a perpendicular direction to the paper transport direction. The projecting part is provided on the paper stack table.

Paper ejection apparatus in a print apparatus

Growing community of inventors

Ibaraki, Japan

Yasushi Hashimoto