Ink ejection printing apparatus comprising automatically actuated ejection orifice cap
AssigneeRicoh Company, Ltd.
InventorsTakao Fukazawa, Takuro Isayama, Kyuhachiro Iwasaki, Hiromichi Komai
Life of this patent
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Abstract
An ink ejection head is moved to an inoperative position when the apparatus is de-energized. An electrical solenoid moves the cap to a retracted position as the ink ejection head approaches the inoperative position and another electrical solenoid or a spring moves the cap into injection orifice sealing engagement with the ink ejection head when the ink ejection head reaches the inoperative position. Damping means are disclosed for preventing impact of the cap against the ink ejection head which would cause erroneous ink ejection and resilient means are disclosed for ensuring sealing alignment of the cap against the ink ejection head.
Claims15
An ink ejection printing apparatus comprising:
- an ink ejection head formed with an ink ejection orifice;
- a cap movable between a disengaged position spaced from the ink ejection head and an engaged position in engagement with the ink ejection head hermetically sealing the ink ejection orifice;
- first biasing means urging the cap to the engaged position;
- and
- second biasing means to move the cap to the disengaged position against a force of the first biasing means.
Dependencies are inferred from the claim text.