Patent ID: 11953344
Assignee: FOXLINK IMAGE TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. A dust-proof sensing device adapted for being used in a printer or a scanner, comprising:
a mechanical body;
a feeding path, a middle of the mechanical body having a feeding path;
a first photoelectric sensor disposed above a top side of the feeding path;
a second photoelectric sensor disposed under a bottom side of the feeding path; and
an upper bracket mounted above the top side of the feeding path, the upper bracket having an upper fastening portion fastened to the mechanical body, an upper wedging portion fastened at a lower portion of the upper fastening portion, an L-shaped upper light guiding holder fastened at one side of a lower surface of the upper fastening portion, and a first light guider fastened at an outer surface of a short section of the L-shaped upper light guiding holder, the upper fastening portion having a first mounting section, and a first inclined section connected to an outer side of the first mounting section, the first mounting section being disposed horizontally, a top surface and a bottom surface of the first mounting section of the upper fastening section being parallel to a horizontal plane, an inner edge of an upper surface of the first inclined section of the upper fastening portion being intersected with a top edge of an inner surface of the upper wedging portion to form a clamping angle,
wherein the horizontal plane, and a center line of the first photoelectric sensor and the second photoelectric sensor also form the clamping angle, the first photoelectric sensor is fastened below the upper wedging portion, the first photoelectric sensor and the horizontal plane also form the clamping angle.