Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

Reed switches for Door sensing on Copiers and Scanners


Image Scanners or just scanner for short, is a device that uses an optical head to scan images or printed documents. The most commonly used model is a flatbed scanner which is very similar to a paper copying machine. The device consists of a glass area where the image or paper to be scanned is placed face down, under which the motor controlled scanning head sits. Once the paper is placed there, the door needs to be closed to stop any unwanted light from interfering with the scanning process. Once this is done, the scan button starts the process. This process is made easier for the user by using Reed Sensors that sense when the door is closed so that the scanning process is started without having to press the scan button, which is especially useful when scanning large amounts of documents. This system also protects the optical head fro misuse by not allowing scanning is the door is not closed.

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