Paper pickup device in paper feeding cassette

Abstract

There is provided a paper pickup device in a paper feeding cassette having a knock-up plate. In the paper pickup device, a first curved slot is formed on a frontal portion of each sidewall of the paper feeding cassette, a second curved slot is formed above the first slot on one sidewall of the paper feeding cassette, a shaft is protrusively inserted into the first slots from the inside of the paper feeding cassette, a connecting member is rotatably connected to the sidewalls of the paper feeding cassette by hinges, and has a first engaging portion extended upward from a body thereof and a second engaging portion horizontally spaced from the first engaging portion by a predetermined distance and a sub-plate is extended from the connecting member under the knock-up plate, for pressing upward the knock-up plate. A link lever has a spring fixing portion extended downward and a rib extended downward from an end of the link lever, the rib being inserted into the second slot from the sidewall of the paper feeding cassette. A first tension coil spring has one end connected to the first engaging portion and the other end connected to the shaft, for causing the subplate to press upward the knock-up plate, and a second tension coil spring has one end connected to the second engaging portion and the other end connected to the spring fixing portion of the link lever, for adding to the tensile force of the first tension coil spring.

Dependencies are inferred from the claim text.