Sheet stack thickness estimating device
AssigneePrimax Electronics Ltd.
InventorChing-Tse Wang
Life of this patent
Estimating the term…
Abstract
The present invention relates to a sheet stack thickness estimating device including a driving device, a first connecting rod, a second connecting rod, a pressing part and a sensor. The driving device provides a motive force to the sheet stack thickness estimating device so as to drive the first connecting rod moved horizontally for rotating the second connecting rod, so that the pressing part presses the sheets on the paper tray. By detecting if the signal generated by the sensor is blocked by the first connecting rod, the thickness estimating device can judge if the thickness of the sheets exceeds a predetermined value.
Claims7
A sheet stack thickness estimating device for detecting a thickness of a stack of sheets on a paper tray, comprising:
- a driving device, for providing a motive force to the sheet stack thickness estimating device;
- a first connecting rod, comprising a notch, wherein the first connecting rod connects to the driving device, so as to be driven to move horizontally by the driving device;
- a second connecting rod, wherein a first end of the second connecting rod connects to the first connecting rod and is synchronized with the first connecting rod, and a second end of the second connecting rod is pivoted to a shaft and is capable of rotating about the shaft;
- a pressing part, for pressing the stack of sheets on the paper tray, wherein the pressing part is extended from the second end of the second connecting rod;
- and
- a sensor, comprising an emitting end and a receiving end, wherein the emitting end and the receiving end are respectively located at two side of the first connecting rod.
Dependencies are inferred from the claim text.