Ricoh Company, Ltd.

Junji Seto

Masashi Ohnishi

Tsutomu Sasaki

Michiharu Suzuki

An image forming apparatus prevents the problem of reduced utilization efficiency of a waste fluid tank caused by the storage of waste fluids with high and low viscosities in the same open-type waste fluid tank. The image forming apparatus includes a first waste fluid tank for storing waste ink fluid ejected from a recording head, and a second waste fluid tank for storing waste ink fluid ejected into a cap of the recording head. The waste ink fluid ejected into the cap is guided to the second waste fluid tank via a tube. The second waste fluid tank is an airtight structure having an inlet at one end to which the tube is detachably connected via a needle or a valve. At the other end of the second waste fluid tank, there is disposed an opening communicating the inside and the outside of the tank.

Image forming apparatus

An image forming apparatus includes a recording head, head tanks, replaceable main tanks, liquid feed pumps, a first driving source, and a drive switching assembly. The feed pumps feed liquids from the main tanks to the head tanks and in reverse from the head tanks to the main tanks. The drive switching assembly selectively transmits a driving force of the first driving source to the feed pumps. The drive switching assembly includes a second driving source, a cam, a slider member, and a switching gear. The switching gear receives the driving force of the first driving source and is movable with the slider member between positions to engage driving gears of the feed pumps and a position to disengage from the driving gears. With movement of the switching gear, the driving force of the first driving source is selectively transmitted to the feed pumps.

Image forming apparatus including recording head for ejecting liquid droplets

An image forming apparatus includes a recording head having a nozzle configured to jet a liquid drop of ink; a cap member configured to be moved between a sealing position where a nozzle surface of the recording head is sealed and an opening position where the nozzle surface is opened; a waste liquid tank movably provided and configured to receive a waste liquid of the ink, the waste liquid being generated by idle-ejecting the liquid drop not contributing to image forming from the recording head; and a moving part configured to move the waste liquid tank tied to movement of the cap member. A position of the waste liquid tank in a case of idle-ejection being performed from the recording head last time and another position of the waste liquid tank in a case of idle-ejection being performed from the recording head this time are different.

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Kanagawa, Japan

Junji Seto