Patent ID: 8764181

Claim:
An ink supply device comprising: a reservoir that stores ink; an ink carrying rotary member that carries ink on an outer peripheral surface thereof; a supply rotary member that is rotatable about a rotation axis that is parallel to a rotation axis of the ink carrying rotary member, the supply rotary member rotating and supplying the ink to the outer peripheral surface of the ink carrying rotary member while a part of the supply rotary member is immersed in the ink in the reservoir; a regulation member that faces an outer peripheral surface of the supply rotary member, the regulation member regulating an amount of ink on the outer peripheral surface of the supply rotary member at a position outside of the reservoir; and a blocking member that extends from below to above a liquid surface of the ink in the reservoir during an operating state where the ink carrying rotary member carries ink, the blocking member extending above the liquid surface at a position between a landing position and the supply rotary member, the landing position being a position at which ink that has been scraped off by the regulation member lands on the liquid surface, the blocking member blocking movement of the ink in the reservoir from the landing position to the supply rotary member, wherein the blocking member extends along the rotation axis of the supply rotary member.