Abstract: A transmission device for driving an automatic document feeder (ADF) and a scanner individually is provided. The transmission device includes a transmission shaft, an actuator, a first transmission module coupled to the scanner, a second transmission module coupled to the ADF, and a power switching module. The actuator is movably attached around the transmission shaft. The power switching module is assembled to the transmission shaft. When the power switching module is coupled to the first transmission module and the transmission shaft rotates in a first direction such that the scanner moves to a first position, the scanner drives the actuator to drive the power switching module to be coupled to the second transmission module. When the transmission shaft rotates in a second direction, the power transmission module is coupled to the first transmission module to drive the scanner to move away from the transmission device.

Abstract: A control knob device has a main body defining a top surface having a ring-shaped stopping wall with two inserting openings formed thereon, and a lateral surface having a guiding recess extending upwards and downwards and a sliding slot running circumferentially and communicating with the guiding recess, with the depth thereof greater than that of the guiding recess. A shell coupled to the main body has a covering plate with two blocking portions located outside the stopping wall and adjacent to the inserting openings, and a lateral plate extending inwards to form an inserting slice corresponding to the sliding slot. The shell is coupled to the main body by the inserting slice passing through the guiding recess and inserted into the sliding slot. Two elastic ends of a spring element are inserted into the inserting openings and abut against the blocking portions for making the rotated shell return automatically.

Abstract: A transmission device for driving an automatic document feeder (ADF) and a scanner individually is provided. The transmission device includes a transmission shaft, an actuator, a first transmission module coupled to the scanner, a second transmission module coupled to the ADF, and a power switching module. The actuator is movably attached around the transmission shaft. The power switching module is assembled to the transmission shaft. When the power switching module is coupled to the first transmission module and the transmission shaft rotates in a first direction such that the scanner moves to a first position, the scanner drives the actuator to drive the power switching module to be coupled to the second transmission module. When the transmission shaft rotates in a second direction, the power transmission module is coupled to the first transmission module to drive the scanner to move away from the transmission device.

Abstract: A control knob device has a main body defining a top surface having a ring-shaped stopping wall with two inserting openings formed thereon, and a lateral surface having a guiding recess extending upwards and downwards and a sliding slot running circumferentially and communicating with the guiding recess, with the depth thereof greater than that of the guiding recess. A shell coupled to the main body has a covering plate with two blocking portions located outside the stopping wall and adjacent to the inserting openings, and a lateral plate extending inwards to form an inserting slice corresponding to the sliding slot. The shell is coupled to the main body by the inserting slice passing through the guiding recess and inserted into the sliding slot. Two elastic ends of a spring element are inserted into the inserting openings and abut against the blocking portions for making the rotated shell return automatically.

Abstract: The invention is an automatic paper-feeding structure, which includes: a lifting member, which is arranged at the paper-feeding side of this automatic paper-feeding structure, and on which plural document papers are supported, and which may make the plural document papers skewed to one side and lifted up; a paper-taking member, of which face generates frictional force to the first paper of the document to make the first paper touched by the member's face be fed into the interior of the paper-feeding structure by the paper-taking member; a paper-separating member, which is with the paper-taking member to generate the squeezing function onto the papers and is able to separate the paper, such that the first paper on the document may be separated from other papers thereunder; a paper-feeding member, which receives the papers delivered from the paper-taking member and generates necessary interaction with the paper-separating member and the de-skewing member; a de-skewing member, which makes a de-skewing and delive

Abstract: The invention is an automatic paper-feeding structure, which includes: a lifting member, which is arranged at the paper-feeding side of this automatic paper-feeding structure, and on which plural document papers are supported, and which may make the plural document papers skewed to one side and lifted up; a paper-taking member, of which face generates frictional force to the first paper of the document to make the first paper touched by the member's face be fed into the interior of the paper-feeding structure by the paper-taking member; a paper-separating member, which is with the paper-taking member to generate the squeezing function onto the papers and is able to separate the paper, such that the first paper on the document may be separated from other papers thereunder; a paper-feeding member, which receives the papers delivered from the paper-taking member and generates necessary interaction with the paper-separating member and the de-skewing member; a de-skewing member, which makes a de-skewing and delive