Dainippon Screen Mfg. Co., Ltd.

Screen Holdings Co., Ltd.

Ryuhei Sumida

Shiro Kitawaki

Masanori Fujiwara

Tetsuya Ishida

Satoshi Yasuda

Kazuma Tani

Ichiro Hassaka

The present invention provides a liquid storing device that includes at least a tank for storing a liquid, a supply tube that supplies the liquid to the tank, and a discharge tube that discharges the liquid stored in the tank. The supply tube diverges at a T branch joint into an upper supply tube and a lower supply tube. The upper supply tube has an upper supply port in the tank, the upper supply port positioned above a level of the liquid stored in the tank. The lower supply tube has a lower supply port in the tank, the lower supply port positioned below the level of the liquid.

Liquid storing device, liquid storing method and inkjet recording device

A discharge liquid agitating mechanism, and an inkjet recording apparatus having the discharge liquid agitating mechanism, are provided which are simple in construction, and are yet capable of preventing sedimentation of particles and the like contained in a discharge liquid. A discharge liquid agitating mechanism in an inkjet recording apparatus which discharges a discharge liquid to a recording medium while moving the recording medium and inkjet headsrelative to each other, includes a main tankformed of a flexible material, a support tablefor supporting the main tank, a nozzlefor introducing a compressed gas between the main tankand support table, a plurality of subtanksformed of the flexible material, a plurality of plate-like objectsfor supporting the subtanks, nozzlesfor introducing the compressed gas between the subtanksand plate-like objects, a pipelinefor connecting the main tankand subtanks, and pipelinesfor connecting the subtanksand inkjet heads

Discharge liquid agitating mechanism, and an inkjet recording apparatus having the discharge liquid agitating mechanism

The ejection positions of a plurality of pre-processing agent ejection nozzles and the ejection positions of a plurality of ink ejection nozzles as seen in a direction orthogonal to the transport direction of a recording medium are in a one-to-one correspondence with each other. A controller causes the process of ejecting ink of a first color from the ink ejection nozzles onto the recording medium subjected to the ejection from the plurality of pre-processing agent ejection nozzles so as to form a failure detection printing pattern which is a printing pattern formed by providing a time lag between the processes of ejecting the ink from adjacent ones of the plurality of ink ejection nozzles. An ejection failure in the pre-processing agent ejection nozzles is detected by judging that a pre-processing agent ejection nozzle corresponding to a region where bleeding results suffers the ejection failure.

Image recording apparatus and method of detecting ejection failure in pre-processing agent ejection nozzles in image recording apparatus

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Kyoto, Japan

Ryuhei Sumida