Optical trigger for postage meter

G - Physics – 07 – B

Patent

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G07B 17/00 (2006.01)

Patent

CA 2144574

An optical trigger is provided for use in a postage meter having a planar paper path. A light source with controllable intensity is mounted above the paper path and shines toward the paper path. A light sensor mounted above the paper path detects the reflected light if any. A dark region is provided below the paper path. More power is supplied to the light source when the sensor detects some light. An actuator is coupled with the printing mechanism of the meter to actuate it for printing of postage. When light is reflected from a mail piece, a timer is started, and when the timer reaches its programmed interval the actuator is actuated. The interval is adjustable by a trimmer adjustment, and two preprogrammed intervals may be selected by a front-panel switch.

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