Patent ID: 7172190

Claim:
A paper feeding mechanism for an inkjet printer, comprising: a drive gear, coaxially coupled to a shaft of a drive roller and adapted to transfer a sheet of paper to a printing zone; a feed gear, coaxially coupled to a shaft of a feed roller and adapted to align the sheet transferred from the drive roller; a discharge gear, coaxially coupled to a shaft of a discharge roller and adapted to discharge the sheet after the sheet has passed through the printing zone; a motor, adapted to supply rotation power to the shaft of the feed roller; and a power transfer unit, adapted to transfer a rotation power of the shaft of the feed roller to the drive gear and the discharge gear such that the drive gear and the discharge gear rotate in a constant direction regardless of a direction in which the feed gear rotates, the power transfer unit comprising: a swing gear clutch installed between the feed gear and the drive gear for causing a rotation direction of the drive gear to be constantly maintained in a direction that is adapted to transfer the sheet to the printing zone even though a direction of rotation of the feed gear changes; and a rotation power transfer device, adapted to couple the drive gear to the discharge gear for causing the discharge gear to rotate in the same direction as the drive gear.