Seiko Epson Corporation

Noritaka Mitsuo

Masaaki Ando

Hiromichi Nakashima

Jun Shimazaki

Norihiro Maruyama

Shuhei Harada

Kenji Otokita

Ryoji Fujimori

Toshio Nakata

Kazutoshi Shimizu

Toshio Arimura

Yuji Kanazawa

A liquid ejecting apparatus includes a liquid ejecting portion configured to eject a first liquid from a nozzle, a liquid receiving portion configured to receive, in a state where a second liquid is accommodated in the liquid receiving portion, for a purpose of maintenance of the liquid ejecting portion, the first liquid discharged from the nozzle, a maintenance portion that maintains a liquid surface of a liquid accommodated in the liquid receiving portion at an upper limit position, and a discharge portion configured to discharge, from a discharge port open to the liquid receiving portion, the liquid accommodated in the liquid receiving portion. The discharge port is positioned below the upper limit position.

Liquid ejecting apparatus and maintenance method for liquid ejecting apparatus

A cap device is designed to form a space surrounding an opening of a nozzle of a liquid ejecting head when the cap device is in contact with the liquid ejecting head including the nozzle for ejecting a liquid, and includes a moisturizing chamber to which a moisturizing fluid for moisturizing the above space is supplied, and a partition wall having gas permeability and configured to partition the space and the moisturizing chamber, where part of the partition wall is formed of a flexible portion.

Cap device and liquid ejecting apparatus

The printing apparatus includes a printing head that includes a plurality of nozzles including a first nozzle, a discharging controller that is capable of controlling discharging of liquid from the plurality of nozzles, a transportation section that relatively moves a recording medium and the printing head by transporting at least either or both of the recording medium and the printing head, and a suction section that includes a suction port which is positioned at an upstream side or a downstream side of the printing head in a relative moving direction of the printing head and the recording medium. The discharging controller controls the first nozzle to discharge mist type ink droplets at a timing of not discharging ink droplets for forming image from the first nozzle, and the suction section suctions the mist type ink droplets discharged from the first nozzle through the suction port.

Printing apparatus and liquid discharging control method

A gear pump includes a pump casing and a gear assembly. The gear assembly includes a driving gear, a driven gear, a driving gear shaft, a driven gear shaft, and a bearing frame. The bearing frame includes a frame main body, a pair of driving side bearing portions, and a pair of driven side bearing portions. The frame main body has a pair of bearing support portions, in which the driving side bearing portion and the driven side bearing portion are provided, and a connecting portion which connects the bearing support portions. The bearing support portions and the connecting portion are integrated together as a one-piece member.

Gear pump and printing apparatus provided with same

To reduce frictional heat generated between a rotation shaft and a bearing portion in a gear pump in which the rotation shaft having a gear mounted thereon is received by the bearing portion and an image recording apparatus having the gear pump. Provided is a gear pump which has a rotation shaft, a bearing portion which receives the rotation shaft, and a gear which is mounted on the rotation shaft and rotates with the rotation shaft, in such a manner that the gear feeds liquid. Furthermore, at least either a concave portion or a convex portion is provided in at least either the rotation shaft or the bearing portion.

Gear pump and image recording apparatus

A printing apparatus includes an discharging head which discharges liquid on a printing medium mounted on an endless belt; a transport unit which transports the printing medium in a transport direction; a medium press portion which is provided on an upstream side of the discharging head in the transport direction and includes a medium pressing unit which compresses the printing medium; and a control portion which controls the medium press portion.

Printing apparatus and method for compressing printing medium

A printing apparatus includes a discharging head which discharges liquid on a printing medium mounted on an endless belt; a medium transport portion as a transport unit which transports the printing medium; an input device as an input unit to which printing condition is input; and a fluff cutter portion which is provided on an upstream side of the discharging head in the transport direction and which cuts fluff of the printing medium in a predetermined height according to the printing condition.

Printing apparatus

A gear pump for transporting a fluid includes a pump casing; and a gear assembly which is accommodated in the pump casing. The gear assembly includes a driving gear, a driven gear that mashes with the driving gear, a driving gear shaft to which the driving gear is attached, a driven gear shaft to which the driven gear is attached, and a bearing frame that rotatably supports the driving gear shaft and rotatably supports the driven gear shaft.

There is provided a liquid ejecting apparatus including: a head that discharges liquid having a component which settles down; a storage section that stores the liquid; a supply path that supplies the liquid from the storage section to the head through a path which extends in a horizontal direction; and an acceleration section that accelerates a part of the supply path which includes at least the path with acceleration having a downward acceleration component in the vertical direction. The supply path may include a upstream part which is connected to the storage section, a first connection part which is connected to the upstream part, a horizontal part which is connected to the first connection part and which extends in the horizontal direction, a second connection part which is connected to the horizontal part, and a downstream part which is connected to the second connection part and the head. At this time, the acceleration section accelerates the horizontal part relatively to the upstream part and the downstream part with the acceleration.

Liquid ejecting apparatus

A liquid discharge apparatus includes a head configured and arranged to discharge a liquid including a sedimentary substance, and a liquid supply path for supplying the liquid from a liquid tank where the liquid is retained to the head. The liquid supply path has differences in elevation of a predetermined length or more in a vertical direction. The liquid supply path has a portion formed into a stepped shape and an angle formed by a width portion and a height portion in the portion formed into the stepped shape is 45 degrees or more and 90 degrees or less.

Liquid discharge apparatus

A liquid discharge apparatus includes a head configured and arranged to discharge a liquid including a sedimentary substance, and a liquid supply path configured and arranged to supply the liquid from a liquid tank where the liquid is retained to the head. The liquid supply path has a region with differences in elevation of a predetermined length or more in a vertical direction. The liquid supply path has at least one convex section formed by folding at each of one side and another side in a direction which intersects the vertical direction in the region.

A liquid dispensing apparatus includes a head that dispenses a liquid containing a sedimentary substance, a liquid tank for storing the liquid, a liquid supply path through which the liquid is supplied from the ink tank to the head via a section having a level difference larger than a predetermined distance in a vertical direction, the section including one or more bent portions including a bent portion of a first type where a downward flow of the liquid is turned to an upward flow, and a bent shape conversion unit configured to change a shape of the section with the level difference, so as to convert the bent portion of the first type in the section with the level difference before the shape conversion into a bent portion of a second type where an upward flow of the liquid is turned to a downward flow.

Liquid dispensing apparatus

A liquid discharge apparatus includes an ink tank configured and arranged to retain a plurality of types of ink including sedimentary ink, a head configured and arranged to discharges the ink, and an ink supply path section configured and arranged to supply the ink from the ink tank to the head. The ink supply path section includes a Cableveyor (registered trademark) accommodating a plurality of ink tubes. A plurality of ink tubes for the sedimentary ink among the plurality of ink tubes are mounted at the same height in a height direction inside the Cableveyor (registered trademark).

A liquid discharge apparatus includes an ink tank configured and arranged to retain sedimentary ink, a head configured and arranged to discharge the sedimentary ink, an ink tube configured and arranged to supply the sedimentary ink from the ink tank to the head, and a circulation pump configured and arranged to circulate the sedimentary ink in the ink tube. A connection section between the ink tube and a pipe of the circulation pump is provided at one of a horizontal section of the ink tube and an upper portion of a vertical section of the ink tube.

Liquid discharge apparatus and liquid discharging method

A liquid droplet discharging apparatus includes an ink tank configured to retain ink, a head configured to discharge the ink, an ink supply path configured to supply the ink from the ink tank to the head, and a shape changing section configured to change a shape of the ink supply path such that differences in elevation are formed in a direction of gravity in the ink supply path.

Growing community of inventors

Nagano, Japan

Noritaka Mitsuo