Paper rolling device with paper roll usage detecting function

Abstract

A paper roll device includes a casing, two rollers, a lever, a resilient component, a detecting module and a control module. The two rollers are installed inside the casing and for supporting a paper roll cooperatively. An end of the lever is disposed between the two rollers, and the lever pivots around a shaft. The paper roll sinks to contact the end of the lever, so as to push the end of the lever in a first direction. The resilient component is connected to the lever and for supporting the lever in a second direction opposite to the first direction. The detecting module is for detecting a position state of the other end of the lever, so as to generate a corresponding detecting signal. The control module is electrically connected to the detecting module and for determining a using state of the paper roll according to the detecting signal.

Description

technical field [0001] The invention provides a paper roll device, especially a paper roll device that can automatically prompt the amount of paper rolls. Background technique [0002] In the past paper roll devices, such as color roll machines, invoice machines or bank ATM machines, most of the paper rolls are put on a rotating shaft as a rotary paper feeding mechanism. However, if a paper feeding mechanism without a rotating shaft is used, the detection mechanism of the paper roll consumption will be more complicated. For example, in order to confirm whether the paper roll is used up, the traditional paper roll device will design the upper cover to be transparent, so that the user can confirm whether the paper roll is used up through the transparent upper cover; The end part is marked with a mark, such as a red line. When the machine sends out the paper with the red line, the user can know that the paper roll has been used up, which means that the traditional paper roll d...

AI Technical Summary

Problems solved by technology

However, if a paper feeding mechanism without a rotating shaft is used, the detection mechanism of the amount of paper roll will be more complicated

For example, in order to confirm whether the paper roll is used up, the traditional paper roll device will design the upper cover to be transparent, and allow the user to confirm whether the paper roll is used up through the transparent upper cover; The end part is marked with a mark, such as a red line. When the machine sends out the paper with this red line, the user can know that the paper roll has been used up, which means that the traditional paper roll device cannot inform the user in advance that the paper roll is about to run out.

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