Abstract:
A printing apparatus comprises a print head moving module comprising a mounting plate, a first wheel, a second wheel, an endless belt, a retaining member of the mounting plate to clamp with the second wheel; an adjusting device comprising a positioning member of the mounting plate, a driving member of the positioning member comprising an indicating block, a moveable member of the positioning member abutting the retaining member, the moveable member comprises a receiving portion having graduations; the indicating block is through the positioning member in the receiving portion; a resilient member in the receiving portion between the driving and the moveable members; wherein the driving member drives the moveable and the retaining members from a first to a second position, in the first position, the indicating block is away from a predetermined graduation; in the second position, resilient member deformed, the indicating block is at the predetermined graduation.
Abstract:
An automatic document feeder for electric equipment includes an input tray, a driving mechanism, and a block mechanism. The input tray has a receiving end, a discharge end, and a first path extending from the receiving end to the discharge end. The driving mechanism includes a separating-roller shaft disposed above the input tray and in proximity to the discharge end, and a separating roller sleeved fixedly on the shaft. The blocking mechanism includes a blocking member pivotable between a blocking position whereat the blocking member is disposed on the first path, and a non-blocking position whereat the blocking member is removed from the first path. A driven arm is connected to and co-rotatable with the separating-roller shaft so as to pivot the blocking member between the blocking position and the non-blocking position.