Paper aligning apparatus

An apparatus for aligning a paper to be printed, comprising:

• a feeding apparatus having a feed roller and a pinch roller parallel to and close to said feed roller, said feed roller and pinch roller having fixed rotation axes during operation of the printer;
• a paper supply apparatus oriented to supply a paper to said feeding apparatus, comprising:
• a paper tray;
• a paper feed plate mounted in said paper tray and underlying the paper;
• a pickup roller which is semicircular in shape over a portion of its length, said pickup roller positioned to contact the paper and oriented parallel to said feed roller;
• a spring pressing said paper feed plate toward said pickup roller;
• mechanical coupling means for coupling the rotation of said feed roller and pinch roller to said pickup roller;
• driving means for driving said feed roller and pinch roller in a forward and reverse direction;
• and
• a one-way clutch preventing rotation of said pickup roller in the reverse direction;
• said one-way clutch comprising:
• a lever having an approximate L-shape and being rotatably attached to a side of said paper tray, said lever having a directional saw-tooth region roughly facing the axis of said pickup roller;
• and
• a catch mounted to an end of said pickup roller on said side of said paper feed tray, said catch having a saw-tooth region complementary to the saw-tooth region of said pickup roller, such that said saw-tooth region of said catch engages said saw-tooth region of said lever during rotation of said pickup roller.