Abstract: The paper discharge mechanism comprises: a first side passage plate and a second side passage plate between which an S-shaped paper conveying passage is formed, wherein the second side passage plate comprises a paper jam detection plate and a paper pullout detection plate both pivotally connected on a frame; a first elastic element biasing the paper jam detection plate and a second elastic element biasing the paper pullout detection plate; and a first sensor and a second sensor. A surface of the paper jam detection plate facing paper is concave and is held against the paper and rotates in the direction away from the first side passage plate during paper jam; a surface of the paper pullout detection plate facing the paper is convex and is held against the paper and rotates in the direction away from the first side passage plate during paper pullout.

Abstract: A paper input mechanism having a buffer function and a printing device using the mechanism are disclosed. The paper input mechanism (300) includes a frame (1) forming a conveying passage (P) for conveying continuous paper, and further includes a fixed passage plate (4) and a buffer plate (2) both located at a paper inputting side of the conveying passage (P), wherein the buffer plate (2) has an initial position and is pressed by the continuous paper to deviate from the initial position; the buffer plate (2) is opposite to the fixed passage plate (4) when being located at the initial position, so as to form a paper input passage (R), and the paper input passage (R) is connected with the conveying passage (P).

Abstract: A paper discharge mechanism, and a printer and a terminal device having the paper discharge mechanism. The paper discharge mechanism includes a frame, a rotary plate, and a paper tear bar. The rotary plate is provided at one side of a conveying passage of printing paper, one end thereof connected to the frame through a pivot shaft and the other end unsupported, and is forced to rotate along a first direction around the pivot shaft when the printing paper is pulled by an external force. The paper tear bar is fixedly provided in the rotation path of the rotary plate. Wherein, the rotary plate is provided with a gap. When the rotary plate rotates along the first direction, the paper tear bar extends out of the gap and contacts the printing paper to tear the printing paper.

Abstract: The paper discharge mechanism comprises: a first side passage plate and a second side passage plate between which an S-shaped paper conveying passage is formed, wherein the second side passage plate comprises a paper jam detection plate and a paper pullout detection plate both pivotally connected on a frame; a first elastic element biasing the paper jam detection plate and a second elastic element biasing the paper pullout detection plate; and a first sensor and a second sensor. A surface of the paper jam detection plate facing paper is concave and is held against the paper and rotates in the direction away from the first side passage plate during paper jam; a surface of the paper pullout detection plate facing the paper is convex and is held against the paper and rotates in the direction away from the first side passage plate during paper pullout.

Abstract: Disclosed are a recording medium accumulating device and a method for accumulating recording medium. The device includes a cylindroid roller for winding up the recording medium and at least two endless belts, peripheral surfaces of the cylindroid roller contact with external surfaces of the endless belts respectively, and a closed medium-feeding passage is formed between the contacting surfaces, a medium-entering passage and a medium-discharging passage for the recording medium are respectively formed between two adjacent endless belts, the medium-entering passage and the medium-discharging passage connect with the medium-feeding passage, the medium-feeding passage drives the recording medium to rotate with the cylindroid roller using the friction force of the contacting surfaces, so as to accumulate the recording medium.

Abstract: Disclosed are a recording medium accumulating device and a method for accumulating recording medium. The device includes a cylindroid roller for winding up the recording medium and at least two endless belts, peripheral surfaces of the cylindroid roller contact with external surfaces of the endless belts respectively, and a closed medium-feeding passage is formed between the contacting surfaces, a medium-entering passage and a medium-discharging passage for the recording medium are respectively formed between two adjacent endless belts, the medium-entering passage and the medium-discharging passage connect with the medium-feeding passage, the medium-feeding passage drives the recording medium to rotate with the cylindroid roller using the friction force of the contacting surfaces, so as to accumulate the recording medium.