Patent ID: 8366238

Claim:
An inkjet head maintenance device for cleaning and maintaining an inkjet head, said inkjet head maintenance device comprising: a power gear for providing a driving force; a sliding seat, wherein a scraping element is disposed on said sliding seat for scraping off residual ink on said inkjet head, wherein said sliding seat further comprises: a rack to be engaged with said power gear, so that said sliding seat is moved between a standby position and a maintenance device in response to rotation of said power gear; a first guiding slot and a second guiding slot arranged at two ends of said rack, respectively; a first fastening part and a second fastening part arranged at said two ends of said rack, respectively; and a first one-way gear and a second one-way gear disposed within said first guiding slot and said second guiding slot, respectively, wherein when said sliding seat is in said standby position, in response to rotation of said power gear in a first direction, said first one-way gear is coupled with said first fastening, so that said power gear is disengaged from said first one-way gear and then engaged with said rack, wherein when said power gear is engaged with said rack, in response to continuous rotation of said power gear in said first direction, said sliding seat is departed from said standby position and moved toward said maintenance position, wherein when said sliding seat is moved to said maintenance position, said power gear is disengaged from said rack and then engaged with said second one-way gear, so that said second one-way gear is detached from said second fastening part to result in idle running and said sliding seat is stayed in said maintenance position, wherein when said sliding seat is stayed in said maintenance position, in response to rotation of said power gear in a second direction, said power gear allows said second one-way gear to be coupled with said second fastening part, and said power gear is disengaged from said second one-way gear and then engaged with said rack, so that said sliding seat is moved toward said standby position.