Price, Gess & Ubell
Image reading apparatus having detachable optical system
 An image reading apparatus according to the present invention comprises a first unit for scanning an original while exposing the original to light, and a second unit detachably provided to the first unit for receiving light from the first unit and converting an original image into electrical signals. The first unit includes a light source for irradiating the original and an optical member for projecting the original image at a predetermined position. The second unit is provided in the vicinity of the predetermined position and includes an image sensor for reading the original image to generate the electrical signals, a signal processing portion for processing the electrical signals generated from the image sensor, and a storage portion for storing the processed electrical signals. 
Minolta Camera Kabushiki Kaisha
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Toshio Akio Hirokazu
Tsuboi Nakajima Yamada