Sheet sensing apparatus with photoelectrically detected resilien

Details Sheet sensing apparatus with photoelectrically detected resilien Sheet sensing apparatus with photoelectrically detected resilien

1984-08-06

1986-09-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

271263, 271258, G01N 904

Patent

active

046148671

ABSTRACT:
Sheet sensing apparatus comprises a shaft (9); two roller assemblies (20) mounted on the shaft (9) by means including a resilient portion (30), the roller assemblies contacting guide surfaces (27) provided by drive rollers (17). Sensing means (37,38) are provided within the shaft (9) for sensing deflection of the resilient portion (30) relatively to the shaft in response to the passage of one or more sheets (44) through the nips (24) between the roller assemblies (20) and the drive rollers (17). Monitoring means (not shown) connected to the sensing means monitors the sensed deflections of the resilient portion (30).

REFERENCES:
patent: 3888478 (1975-06-01), Alderman, Jr. et al.
patent: 4166615 (1979-09-01), Noguchi et al.
patent: 4398711 (1983-08-01), Horst et al.
patent: 4484070 (1984-11-01), Inoue

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