Abstract: A paper feeder enables a compact printer to print a large area of paper. The paper feeder includes a hanger, a paper feeding module, a driving module and a controller. The feeding module includes a tray and a roller. The tray includes a paper input board and a paper output board. The roller is located in the tray and feeds a paper from the paper input board to the paper output board. The driving module includes a base configured to receive the compact printer and a driving device which drives the base to move across the moving direction of the paper. The controller is configured to control the compact printer to print on the paper at a certain location.

Abstract: A portable printer includes an outer housing, a circuit board, a battery, an inner housing, at least one inkjet head, and a motor, all of which are housed in the outer housing. The outer housing defines a longitudinal receiving space and an opening communicating with the receiving space. The battery is electrically connected to the circuit board to provide power to the portable printer. The inner housing can rotate around an axis of the outer housing. The inkjet head can rotate with the inner housing, and emits ink when it rotates. The motor is electrically connected to the circuit board, and is controlled by the circuit board to drive the inner housing to rotate. The rotation of the inner housing drives the inkjet head to rotate. Ink from the inkjet head goes out of the outer housing through the opening.

Abstract: A portable printer includes an outer housing, a circuit board, a battery, an inner housing, at least one inkjet head, and a motor, all of which are housed in the outer housing. The outer housing defines a longitudinal receiving space and an opening communicating with the receiving space. The battery is electrically connected to the circuit board to provide power to the portable printer. The inner housing can rotate around an axis of the outer housing. The inkjet head can rotate with the inner housing, and emits ink when it rotates. The motor is electrically connected to the circuit board, and is controlled by the circuit board to drive the inner housing to rotate. The rotation of the inner housing drives the inkjet head to rotate. Ink from the inkjet head goes out of the outer housing through the opening.

Abstract: A de-skew mechanism, in an image forming device, with a correcting member disposed in a rotatable manner to the rotary shaft and turning with driving roller by a spring between them. A torque spring suppresses the turning of the correcting member to correct the skew of the medium. When conveyed, the medium will butt against the correcting member to be stopped and corrected. The medium conveying force and the force that the spring brings to the driving roller are sufficient for turning the correcting member and passing therethrough. At one time, the force that the correcting member brings to the medium will reduce to zero. As such, the medium will not be damaged by the correcting member while being conveyed.

Abstract: A paper feeding mechanism for carrying a paper passing through a scanning station having a scanning module includes a partition, a paper transporting device, and a switching member movably disposed corresponding to one end of the partition. A first paper feeding channel is formed between the partition and the scanning station, and a second paper feeding channel is formed on another side of the partition. The paper transporting device carries the paper passing over the side of the partition through the first paper feeding channel with a first page of the paper facing the scanning module. Then, the paper is flipped for a second page of the paper facing the scanning module. The switching member can be selectively moved for guiding the paper passing through the first paper feeding channel or the second paper feeding channel.

Abstract: A de-skew mechanism includes a driving shaft installed on a frame of an image forming device and driven by a motor, an active roller installed on the driving shaft and driven by the driving shaft, and an idle roller driven by the active roller for driving a medium with the active roller. A nip is formed between the active roller and the idle roller. The de-skew mechanism further includes a correcting member installed on the driving shaft in a rotatable manner and located upstream of the nip for correcting skew of the medium in a correcting position, and a restoring member connected to the correcting member for loading torque to the correcting member so as to drive the connecting member from the correcting position to a releasing position where the medium pass therethrough.

Abstract: A de-skew mechanism, in an image forming device, with a correcting member disposed in a rotatable manner to the rotary shaft and turning with driving roller by a spring between them. A torque spring suppresses the turning of the correcting member to correct the skew of the medium. When conveyed, the medium will butt against the correcting member to be stopped and corrected. The medium conveying force and the force that the spring brings to the driving roller are sufficient for turning the correcting member and passing therethrough. At one time, the force that the correcting member brings to the medium will reduce to zero. As such, the medium will not be damaged by the correcting member while being conveyed.

Abstract: A disk having one or more indentations is configured at one end of a driving shaft and has interaction with an extension arm configured at a corresponding end of a switch shaft for switching the medium conveying route in an image system. When the driving shaft drives the disk to rotate along different directions, the indentation on the disk provides the extension arm room for the disk to guide the extension arm to switch its position between a first position and a second position. A plurality of switch gates on the switch shaft also switch to different positions corresponding to the extension arm such that the conveying route of a medium can be switched between a first route and a second route.

Abstract: A paper feeding mechanism for carrying a paper passing through a scanning station having a scanning module includes a partition, a paper transporting device, and a switching member movably disposed corresponding to one end of the partition. A first paper feeding channel is formed between the partition and the scanning station, and a second paper feeding channel is formed on another side of the partition. The paper transporting device carries the paper passing over the side of the partition through the first paper feeding channel with a first page of the paper facing the scanning module. Then, the paper is flipped for a second page of the paper facing the scanning module. The switching member can be selectively moved for guiding the paper passing through the first paper feeding channel or the second paper feeding channel.