Paper supply apparatus with brake lever controlled lifter for a printing device
AssigneeSamsung Electronics Co., Ltd.
InventorJung-yun Won
Life of this patent
Estimating the term…
Abstract
An image forming device includes a paper supply apparatus including an adjustable knock-up plate to store a plurality of papers and having a lifter, a pick-up roller and feed roller to pick up each of the plurality of papers and feed each of the plurality of papers into the image forming device respectively, a motor to drive a plurality of units in the image forming device including the knock-up plate, and a brake unit to selectively transmit and disconnect power to the lifter. The lifting operation of the knock-up plate, to smoothly supply papers to the image forming device, is performed by receiving power from an existing arbitrary motor installed within the image forming device, and not from an exclusive motor that is solely used to drive and lift the knock-up plate.
Claims18
An image forming device having a paper supply apparatus comprising:
- an adjustable knock-up plate to store a plurality of papers and having a lifter;
- a pick-up roller and feed roller to pick up each of the plurality of papers and feed each of the plurality of papers into the image forming device respectively, the pick-up roller being biased in a downward direction and continuously contacts a top sheet of the plurality of papers as the papers are fed into the printing device;
- a motor to drive a plurality of units in the image forming device including the knock-up plate;
- and
- a brake lever to selectively transmit and disconnect power to the lifter.
A paper supply apparatus for a printing device, comprising:
- a knock-up plate on which a plurality of papers are stacked;
- a pick-up roller that feeds the papers into the printing device by picking up the papers stacked on the knock-up plate;
- a lifter to lift the knock-up plate so that the papers stacked on the knock-up plate contact with the pick-up roller;
- a motor to drive apparatuses in the printing device;
- a spring clutch to connect the motor to the lifter to transmit power;
- and
- a brake lever to selectively transmit power to the lifter according to height variations of the pick-up roller via the spring clutch.
An image forming apparatus comprising:
- an image forming unit to form an image on a printing medium;
- and
- a paper supply apparatus to feed the printing medium to the image forming unit comprising:
- a knock-up plate on which a plurality of printing media are stacked;
- a pick-up roller that feeds the papers into the image forming unit by picking up the printing media stacked on the knock-up plate;
- a lifter to lift the knock-up plate so that the printing media stacked on the knock-up plate contacts with the pick-up roller;
- a motor to drive apparatuses in the image forming apparatus;
- a spring clutch to connect the motor to the lifter to transmit power;
- and
- a brake lever to selectively transmit power to the lifter according to height variations of the pick-up roller via the spring clutch.
Dependencies are inferred from the claim text.