Registers – Coded record sensors – Feed mechanisms
Patent
1989-08-09
1991-04-02
Pitts, Harold
Registers
Coded record sensors
Feed mechanisms
235483, 235485, 235486, G06K 1300
Patent
active
050048988
ABSTRACT:
An optical reading device which is capable of being assembled readily and assures stabilization of the distance between a sensor of the reflecting type and a surface of a medium to be read by the sensor. The sensor is carried on a holding member, and an engaging member is pivotally supported on the holding member at a location spaced from the sensor. A screw shaft and a guide shaft extend in parallel to each other and to an axis of pivotal motion of the engaging member. The screw shaft has a spiral groove formed thereon for meshing engagement with a toothed portion formed on the engaging member or the holding member and is rotated to move the holding and engaging members therealong. A record medium to be read by the sensor is fed in a direction perpendicular to the screw shaft. A contact element is provided on the holding member for assuring a minimum distance between the sensor and a surface of the record medium to be read by the sensor. A resilient member is disposed between the holding and engaging members for urging them such that the contact element may be resiliently contacted with a sliding face and the toothed portion may be resiliently engaged with the spiral groove of the screw shaft.
REFERENCES:
patent: 4147295 (1979-04-01), Nojiri et al.
patent: 4800258 (1989-01-01), Suzuki
patent: 4866259 (1989-09-01), Bonnemoy
patent: 4952786 (1990-08-01), Inoue
Gotoh Masaki
Hasegawa Kazuo
Ishikawa Hiroshi
Alps Electric Co. ,Ltd.
Pitts Harold
Shoup Guy W.
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