Slit-Scan Microfilmer With Dual Semi-Transparent Pivoting Mirrors and Microfilmed Item Numbering From Display
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
The figure discloses a dual pivoting mirror system for exposing microfilm using a slit-scanning apparatus. Additional information (e.g., an item or sequence number) may be imaged onto the microfilm through semi- transparent pivoting mirrors simultaneously with the image from the slit in a predetermined location with respect to the image. A belt and roller system 1 transports a check C past a slit 3. The system includes multiple rollers to contact the check at multiple positions since only the area of the slit 3 must be optically free from obstructions. A lamp 4 illuminates the slit and the transported check C of the slit. Light is reflected from the front of the check C along a first optical path A to mirror system 6A, semi-transparent pivoting mirror 7A, and through lens 8 to form an image on the microfilm 9.