Kyocera Document Solutions Inc.

Kyocera Corporation

Yasutaka Inui

Takuma Araki

Kenichi Satake

Noriaki Furukawa

Takashi Somete

Issei Nakano

Hiroyuki Ueda

Aiichiro Otana

Chikara Ishihara

Hiroomi Nakatsuji

Jun Nakano

Naoto Miyakoshi

Masanobu Maeshima

Takashi Miyahara

Yuuji Mizutani

Shuhei Kawamata

Misaki Nomoto

An inkjet recording apparatus includes a holder, a blade and a biasing member. The holder faces a nozzle surface of an inkjet head and moves in a predetermined traveling direction along the nozzle surface. The blade is provided in the holder and swung about a shaft crossing the traveling direction. The biasing member is provided in the holder and biasing the blade in a direction in which a tip end portion of the blade is pressed against the nozzle surface.

Inkjet recording apparatus

An image forming apparatus includes a recording head, a wiper and a head mounting member. The recording head is provided with a nozzle area where a number of ink ejection ports are opened downward. The wiper is configured to move in a wiping direction while coming into contact with the nozzle area to wipe the nozzle area. The head mounting member is provided on a side surface of the recording head in the wiping direction. The surface of the head mounting member has water repellency higher than the side surface of the recording head. A recess portion and a protrusion are alternatively provided in a lower end portion of the head mounting member.

Ejecting unit and image forming apparatus

An image forming apparatus includes a recording head and a wiper. The recording head is provided with a nozzle region where a plurality of ink ejection ports are opened downward. The wiper comes into contact with the nozzle region and moves in a predetermined direction to wipe the ink ejection ports. A head mounting part protruding outward is provided along the wiping direction on a side surface of the recording head at a position higher than the nozzle region. The head mounting part has: an outside portion having a water repellency higher than that of the side surface; and an inside portion provided inside the outside portion and having a water repellency smaller than that of the outside portion.

A recording head includes an ink ejection portion and an ink holding portion. The ink holding portion includes a sheet portion and a holding portion. The sheet portion has an upper end side fixed to the ink ejection portion and a lower end side movable in a direction of coming closer to or separating away from a side surface of the ink ejection portion. The holding portion is located at a lower end portion of the sheet portion on the ink ejection portion side, is disposed to come into contact with or close to the side surface of the ink ejection portion, and is configured to hold an ink in an adjacent region with respect to the ink ejection portion.

Recording head and inkjet recording apparatus

The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The suction unit is configured to suck the sheet to the conveyance belt. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A depth of the recessed portion in a facing region facing the head end portion of the conveyance plate is shallower than a depth of the recessed portion in a region other than the facing region.

The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The suction unit causes the conveyance belt to suck the sheet. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A ratio of the recessed portions per unit area in a facing region of the conveyance plate facing the head end portion is smaller than a ratio of the recessed portions per unit area in a region other than the facing region.

An ink jet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, and a controller. The recording head includes an ink ejection surface having an ink ejection port from which ink is ejected. The cleaning liquid supply device includes a cleaning liquid supply surface having a cleaning liquid supply port from which cleaning liquid for wiping the ink ejection surface with the wiper member is supplied, and is located upstream of the ink ejection surface in a wiping direction. The controller controls a cleaning operation including squeezing out the cleaning liquid containing bubbles from the cleaning liquid supply port, and moving the wiper member carrying the cleaning liquid containing bubbles, in the wiping direction from a movement start position to an end position ahead of the ink ejection surface.

Ink jet recording apparatus

Provided is a recording head recovery system, which includes a recording head and a wiper. The recording head includes an ink ejection surface provided with an ink ejection region in which ink ejection ports are formed. The recording head is disposed on a wiping direction upstream side of the ink ejection region, and includes a cleaning liquid supply region in which cleaning liquid supply ports for supplying cleaning liquid are formed. A height position of a lower end part of the wiper when passing the cleaning liquid supply region is lower than a height position of the lower end part of the wiper when wiping the ink ejection region.

Recording head recovery system and inkjet recording apparatus having the same

An inkjet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, a cleaning liquid flow path, and a controller. The cleaning liquid flow path includes a vertical tubular member connected to the cleaning liquid supply device and extending upward, and a horizontal tubular member connected to an upper end of the vertical tubular member and extending in a horizontal direction. The controller extrudes a cleaning liquid in at least a part of the cleaning liquid flow path from a cleaning liquid supply port before control of a cleaning operation for wiping an ink ejection surface of the recording head, thereby performing control of an air bubble release operation of the cleaning liquid flow path.

A recording head recovery system includes a recording head and a wiper. The recording head includes an ink ejection surface provided with an ink ejection region in which ink ejection ports are formed. The recording head is disposed on a wiping direction upstream side of the ink ejection region, and a cleaning liquid supply region in which cleaning liquid supply ports for supplying cleaning liquid are formed. The pressure contact angle of the tip of the wiper to the ink ejection surface is decreased after the wiper passes the cleaning liquid supply region before reaching the ink ejection region.

Provided are a recording head and an ink jet recording apparatus provided with the same capable of cleaning an ink ejection surface while preventing damage to a wiper. The recording head is provided with an ink ejection surface including an ink ejection region in which a plurality of ink ejection ports for ejecting ink onto a sheet is opened. With respect to the ink ejection region, on the upstream side in a wiping direction in which a wiper wipes the ink ejection surface, a plurality of concave parts is provided. Inside each of the concave parts, two or more cleaning liquid supply ports for supplying a cleaning liquid are provided in the wiping direction.

Recording head and ink-jet recording apparatus therewith

Provided is a recording head recovery system, which includes a recording head and a wiper. The recording head includes an ink ejection surface provided with an ink ejection region in which ink ejection ports are formed. The recording head is disposed on a wiping direction upstream side of the ink ejection region, and a cleaning liquid supply region in which cleaning liquid supply ports for supplying cleaning liquid are formed. A height position of a lower end part of the wiper when passing the cleaning liquid supply region is lower than a height position of the lower end part of the wiper when wiping the ink ejection region.

Recording head recovery system, head cleaning mechanism, and inkjet recording apparatus having the same

A recording head is provided with an ink ejection surface and a cleaning liquid supply surface. The ink ejection surface includes a nozzle region in which a plurality of ink ejection nozzles for ejecting ink onto a recording medium are open. The cleaning liquid supply surface is provided, with respect to the nozzle region, on an upstream side in a wiping direction in which a wiper wipes the ink ejection surface, and a plurality of cleaning liquid supply ports for supplying a cleaning liquid are open through the cleaning liquid supply surface. On the cleaning liquid supply surface, at least in a region including the cleaning liquid supply ports, a hydrophilic region having wettability with respect to water higher than that of the ink ejection surface is formed substantially evenly across an entire region in a width direction thereof orthogonal to the wiping direction.

Recording head and ink-jet recording apparatus provided with the same

A recording head recovery system has a recording head, a tank, and a control portion. The control portion can perform a recovery operation of the recording head including a cleaning solution feeding operation where cleaning solution is fed through cleaning solution feed ports by locating the tank such that the solution surface of the cleaning solution in the tank is above a first position which is the height of the cleaning solution feed ports, a wiping operation where a wiper wipes an ink ejection surface, and a non-feeding operation where the cleaning solution is sucked into the cleaning solution feed ports by locating the tank such that the solution surface of the cleaning solution in the tank is below the first position.

Recording head recovery system and inkjet recording apparatus therewith, and method for recovering recording head

A head cleaning mechanism includes a recording head and a wiper. The recording head has an ink ejection surface in which ink ejection ports are opened. The wiper wipes the ink ejection surface. The recording head has a cleaning liquid supply ports disposed on an upstream side of the ink ejection port in a wiping direction, and an inclined surface inclined downward toward a downstream side in the wiping direction, a tip of the wiper being in pressure contact with the inclined surface in the wiping operation. The inclined surface has a pressure contact start position at which the wiper starts the pressure contact in the wiping operation, and a water repellent region formed at least from the pressure contact start position to a position on an upstream side of the cleaning liquid supply port in the wiping direction.

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Osaka, Japan

Yasutaka Inui