US 12,111,154 B2
Sheet detection device
Tsung-Hua Kuo, New Taipei (TW); and Wei-Chun Jau, New Taipei (TW)
Assigned to KINPO ELECTRONICS, INC., New Taipei (TW)
Filed by KINPO ELECTRONICS, INC., New Taipei (TW)
Filed on Sep. 27, 2022, as Appl. No. 17/953,918.
Claims priority of application No. 111124513 (TW), filed on Jun. 30, 2022.
Prior Publication US 2024/0003670 A1, Jan. 4, 2024
Int. Cl. G01B 7/32 (2006.01)
CPC G01B 7/32 (2013.01) 20 Claims
OG exemplary drawing
 
1. A sheet detecting device, comprising:
a first sheet guiding component, disposed in a sheet tray, and movable between an initial position and a threshold position along a first direction;
a first conductor element, disposed in the sheet tray along the first direction, being conductor continuously extended, and arranged correspondingly between the initial position and the threshold position; and
a first sensing element, disposed on and linked up with the first sheet guiding component, and disposed in spaced with the first conductor element and overlapping with at least a part of the first conductor element;
wherein a first overlapping portion between the first conductor element and the first sensing element correspondingly generates a first capacitance value, and the first capacitance value changes gradually corresponding to movement of the first sensing element along the first direction.