1. The form will be scanned by an optical reader

2. Optical reader and optical information scanning device comprising such a reader

3. Sealed housing with integral window and integral pressure indicator in electro-optical reader

4. Portable optical reader system for reading optically readable information located within a three dimensional area

5. The answer sheet, on which you have entered all your answers, is fed through an optical reader.

6. An optical reader of a form is discussed where the form has a stored known boundary or boundaries.

7. The invention is an optical reader having a 2D image sensor that is configured to operate in a partial frame capture mode.