Patent ID: 6123408
Filing Date: 2000-09-26
Classification: B41J

Abstract:
An ink-jet type image forming apparatus, comprising:a recording head having a plurality of nozzle components for ejecting ink in accordance with image information;a plurality of cap members for covering the nozzle components; andan ink suction pump connected to the cap members, the ink suction pump suctioning the ink in the cap members, the ink suction pump including a cylinder having an interior space and two ink suction ports passing through the interior space, and a piston movably arranged in the interior space, each of the ink suction ports being connected to different cap members, and the piston being movable between the two ink suction ports;wherein the piston includes a piston head and a piston head body having a through-hole formed therethrough and a drain port formed in a side of the piston head body in communication with the through-hole.