Invention Grant
- Patent Title: Clear card sensors
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Application No.: US16156321Application Date: 2018-10-10
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Publication No.: US10793383B2Publication Date: 2020-10-06
- Inventor: Robert A. Ehrhardt
- Applicant: Zebra Technologies Corporation
- Applicant Address: US IL Lincolnshire
- Assignee: Zebra Technologies Corporation
- Current Assignee: Zebra Technologies Corporation
- Current Assignee Address: US IL Lincolnshire
- Main IPC: B65H7/04
- IPC: B65H7/04 ; B65H7/14 ; B65H7/20 ; B41J11/00 ; G01N21/55

Abstract:
An example method includes comparing, via circuitry, a first signal indicative of a first amount of light received by a first light sensor to a second signal indicative of a second amount of light received by a second light sensor, wherein the second light sensor is to compensate for an environmental change by detecting the second amount of light transmitted by a light source regardless of a presence or absence of an object in the conveyance path; determine, via the circuitry, whether a reflection loss is present based on the comparing of the first and second signals; and if the circuitry detects the reflection loss based on the comparing of the first and second signals, generating a presence indication.
Public/Granted literature
- US20190039843A1 Clear Card Sensors Public/Granted day:2019-02-07
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