| 摘要 |
A document printer according to an embodiment of the present invention comprises a feeding cassette which supplies printing papers, an image forming part which forms images on printing papers supplied from the paper cassette, a paper ejecting part which ejects printing papers passed through the image forming part to outside, a feeding guide placed at an upper side of a front end part of the feeding cassette and in which at least one guide rib is arranged on an outer peripheral surface, a pickup roller in which one side is detachably connected to the guide rib, and a driving shaft detachably connected to another side of the pickup roller to rotate the pickup roller, wherein the pickup roller comprises a hub body in which one side is connected to the driving shaft, a pickup pad wrapped around an outer peripheral surface of the hub body, a guide sleeve extended from another side of the hub body, a roller bushing inserted to an outer peripheral surface of the guide sleeve and in which one side is supported by the guide rib, and an elastic member received inside the guide sleeve and applying pressure to the roller bushing. |
