Medium detection module and printing device

By setting up a mating projection on the detection bracket of the media detection module to define the side edge of the paper-trapping channel, the problem of paper jamming caused by entering the gap in the prior art is solved, and the smooth paper-trapping of the printing medium is achieved.

CN222682080UActive Publication Date: 2025-03-28XIAMEN HANIN CO LTD
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Patent Information

Application Number
CN202420758990.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-12
Publication Date
2025-03-28
Estimated Expiration
2034-04-12

AI Technical Summary

Technical Problem

The existing media detection modules can easily cause paper jams when the edges of the printing media enter the gap, affecting the normal operation of the printer.

Method used

By providing mating protrusions on the detection bracket, one side edge of the paper-trapping channel is defined to avoid the formation of gaps, thereby preventing the edge of the printing medium from entering the gaps.

Benefits of technology

It effectively avoids paper jams caused by the edges of the printing media entering the gap, and ensures smooth paper removal of the printing media.

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Abstract

The utility model discloses a detection module and a printing device, the medium detection module comprises a detection support and a paper detector carried on the detection support, the detection support comprises a base and a top cover, and the base and the top cover are mutually jointed and jointly define a paper feeding channel for a printing medium to pass through. The paper detector is constructed to be capable of detecting the printing medium entering the paper feeding channel and comprises an upper photoelectric sensor and a lower photoelectric sensor which are oppositely arranged up and down; a matching protrusion is arranged on one of the base and the top cover, a matching groove matched with the matching protrusion is formed in the other one of the base and the top cover, the height, measured in the vertical direction, of the matching protrusion is larger than the height, measured in the vertical direction, of the paper feeding channel, and the matching protrusion defines the edge of one side of the paper feeding channel. And the paper feeding channel is provided with an open side end part which is laterally opposite to the matching bulge. A gap extending in the width direction of the printing medium cannot be formed in the detection support, and paper feeding of the printing medium is smoother.
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