Kyocera Document Solutions Inc.

Kyocera Corporation

Kyocera Mita Corporation

Issei Nakano

Takuma Araki

Noriaki Furukawa

Takashi Somete

Chikara Ishihara

Hiroomi Nakatsuji

Jun Nakano

Yasutaka Inui

Hiroyuki Ueda

Aiichiro Otana

Shingo Yoshida

Jun Nakai

Nobuhiro Fukuma

Hideki Okamura

Naoto Miyakoshi

Hiroaki Tsuchiya

Hideji Mizutani

Satoshi Uemura

Takashi Miyahara

Chika Sawamoto

Yuko Yano

Misaki Nomoto

Yuuji Mizutani

An inkjet recording apparatus includes a recording head, a conveyance belt, a control portion, an ink receiver, an ink discharging flow path, and a liquid supply mechanism. The recording head includes a plurality of nozzles for ejecting ink. The conveyance belt has a plurality of first openings and conveys a recording medium. The control portion executes flushing in which the ink is ejected through the nozzles of the recording head to pass through any of the plurality of first openings. The ink receiver is opposite disposed to be opposed to the recording head via the conveyance belt and receives the ink that has passed through the first openings during execution of the flushing. The ink discharging flow path is connected to the ink receiver. The liquid supply mechanism supplies a liquid capable of dissolving the ink into the ink receiver.

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

A wiping device includes a wiping member and a moving part. The wiping member wipes a liquid off a nozzle surface of a recording head. The moving part moves the wiping member along the nozzle surface in a predetermined moving direction. The wiping member performs a first wiping operation in which the wiping member is moved while not coming into contact with the nozzle surface but coming into contact with the liquid adhering to the nozzle surface, and a second wiping operation in which the wiping member is moved while coming into contact with the nozzle surface after the first wiping operation.

Wiping device, image forming apparatus and wiping method

An inkjet recording apparatus includes a recording head including a plurality of nozzles for ejecting ink, a conveyor belt that has a plurality of apertures and conveys recording media one by one, a control unit, an ink receiver, and a pipe-shaped ink discharge flow path. The control unit controls drive of the recording head and the conveyor belt to perform flushing, in which the ink is ejected from the nozzle of the recording head to pass through one of the apertures, at a timing different from a timing contributing to image recording. The ink receiver is disposed to face the recording head sandwiching the conveyor belt therebetween, to receive the ink after passing through the aperture when the flushing is performed. The ink discharge flow path is connected to the ink receiver. When the flushing is performed, a predetermined amount of liquid is stored in the ink receiver.

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

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 first receiving recess () and a second receiving recess () are formed on a surface of the housing, on which a pair of image forming lenses () are placed, to receive a first temperature sensor () and a second temperature sensor (), and are formed in positions, in which thermal deformation characteristics of the housing are approximately identical at one side and the other side of a first straight line K, while interposing the first straight line Ktherebetween.

Optical scanning device and image forming apparatus

A scanning path of light includes a synchronization detection area A where a synchronization detection sensordetects scanning light and an image writing area B where writing of the image data to a photosensitive drumis performed by the scanning light, and a light amount change unitis configured to reduce a change amount of a light amount in the synchronization detection area A as compared with the image writing area B.

Optical scanning device

In a first scanning lens, a first lens section and a second lens section are vertically overlapped in such a manner as to separate lens centers thereof by a first distance. In a second scanning lens, a third lens section and a fourth lens section are vertically overlapped in such a manner as to separate lens centers thereof by a second distance equal to the first distance. A vertical positional relationship of the first lens section with the second lens section is the same as a vertical positional relationship of the third lens section with the fourth lens section. Further, a separating direction of a lens center of the first lens section from that of the second lens section is opposite to a separating direction of a lens center of the third lens section from that of the fourth lens section.

Optical scanning device and image forming apparatus provided with same

A light scanning device includes a deflection unit, a first imaging lens, and a second imaging lens. The first imaging lens has a bottom surface adhesively secured to a housing via a plurality of adhesion portions. The second imaging lens has a bottom surface adhesively secured to a top surface of the first imaging lens via a plurality of adhesion portions. The plurality of the adhesion portions interposed between the first imaging lens and the housing are symmetrically located with respect to a center position of the first imaging lens in a main-scanning direction. The adhesion portions interposed between the first imaging lens and the second imaging lens are symmetrically located with respect to the center position of the first imaging lens in the main-scanning direction, and are located outside in the main-scanning direction with respect to the adhesion portions between the first imaging lens and the housing.

Light scanning device that improves scanning accuracy of light beam on scan object surface and image forming apparatus including the same

An optical scanning device includes a light source unit, a deflector, and a scanning lens. The deflector reflects first and second light beams emitted from the light source such that the beams scan a scanned surface in main scanning direction. The scanning lens is disposed between the deflector and the scanned surface, includes incident and emission surfaces, and focuses the first and second light beams on the scanned surface. At least one of incident and emission surfaces is an optical refractive surface in which first and second refractive surfaces through which the first and second light beams pass respectively are arranged in alignment in the sub scanning direction. An interval between a first generatrix of the first refractive surface and a second generatrix of the second refractive surface in the sub scanning direction increases from a center portion toward end portions of the scanning lens in the main scanning direction.

Optical scanning device and image forming apparatus using the same

A lens-mounting structure according to the present invention is a lens mounting structure that glues a lens and a mounting surface of a support portion that supports the lens using an adhesive agent applied there between, to mount the lens to the support portion, characterized by setting a gluing surface area of the mounting surface of the support portion and the adhesive agent to be smaller than a gluing surface area of the lens and the adhesive agent.

Lens-mounting structure, and optical-scanning apparatus and image-forming apparatus equipped with the same

An optical scanning device includes a light source, a deflector, an incident optical system and one scanning lens. The scanning lens includes a first face and a second face. In a main scanning direction cross section of the scanning lens, when a scanning range is separated, with on axis as a reference, into an image height region of a first direction and an image height region of a second direction that is opposite to the first direction, the incident optical system is disposed on a side of the image height region of the first direction. Curvature of the first face in a sub scanning direction cross section decreases from on axis toward off axis in the main scanning direction, and curvature of the second face in the sub scanning direction cross section increases from off axis of the first direction toward the second direction in the main scanning direction.

Growing community of inventors

Osaka, Japan

Issei Nakano