Patent ID: 8864303

Claim:
A multifunctional printer, comprising: a main body comprising a housing and a cover pivoted to the housing, wherein the housing has an opening, the cover has a first protrusion and a second protrusion which protrude to an interior of the housing and are located in the opening; an automatically opening or closing cover device disposed in the main body, comprising: a gear; and a sliding element comprising a body portion, a driving portion and a driven portion, wherein the driving portion and the driven portion are disposed on opposite sides of the body portion, and the driving portion engages with the gear, when the gear rotates towards a first direction, the driving portion is driven by the gear and makes the sliding element move towards a cover opening direction, and the driven portion of the sliding element props against the first protrusion of the cover is opened relative to the housing while an enraging end of the driven portion is located between the first protrusion and the second protrusion, the engaging end contacting neither the first protrusion nor the second protrusion, and when the gear rotates towards a second direction, the driving portion is driven by the gear and makes the sliding element move towards a cover closing direction, and the engaging end of the driven portion props against and latches with the second protrusion of the cover, and along with the movement of the driven portion towards the cover closing direction, the cover is driven to be closed relative to the housing.