Sheet size detection device

Details Sheet size detection device Sheet size detection device

1992-10-14

1994-08-30

Wieder, Kenneth A.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

324691, 324714, 324716, G01N 2704, G01R 2702

Patent

active

053431421

ABSTRACT:
A sheet size detection device for detecting a size of sheets which are held in a cassette body comprises a first guide member for defining the position of the sheets which are held in the body of the cassette, in a first direction of the sheets, the first guide member being movable in accordance with the size of sheets, a second guide member for defining the position of the sheets, in a second direction of the sheets, the second direction being orthogonal to the first direction, the second guide member being movable in accordance with the size of sheets, a first arm having a first resistor and movable with the first guide member, a second arm having a second resistor and movable with the second guide member, the first and second resistors constituting a variable resistor, and a size detector for detecting the size of the sheets on the basis of the resistance value of the variable resistor.

REFERENCES:
patent: 2856582 (1958-10-01), Anderson
patent: 2902765 (1959-09-01), Chater
patent: 4994752 (1991-02-01), Hata
patent: 5070622 (1991-12-01), Butzin et al.

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