| 摘要 |
PURPOSE:To make it possible to prevent the retraction of a meniscus, by performing the attachment of a cap while sucking air in capping by a pressure generating means, and providing time difference between capping release operation and pressure restoring operation. CONSTITUTION:When recording is finished, a gear 14 is rotated by a pulse motor 10 to revolve a lever 14a to right and a capping apparatus 11 is moved to the side of a head 1 by a spring 12 while, at the same time, a piston 7 is fallen by the leftward movement of a slide lever 15 to suck air around the capping apparatus into the upper part of a pump 4 through a tube 13. When capping is performed in this state, suction is stopped. In starting recording, capping is released by reverse operation but, in this case, flowline resistances of a piercing orifice 7a and a valve 7b are low as compared with the tube and, therefore, the back flow of air in the tube 13 is prevented. By this mechanism, the retraction of a meniscus is prevented and good recording can be performed. |
