LINE-BY-LINE SCANNING SYSTEM FOR A DOCUMENT TO BE COPIED

摘要

LINE-BY-LINE SCANNING SYSTEM FOR A DOCUMENT TO BE COPIED The invention relates to line-by-line scanning in which one mirror of a conventional half-rate mirror system is replaced by a web provided with an aperture. Movement of the web along a document offers up the aperture through which lineby-line scanning takes place. The system described provides an arrangement having lower mechanical inertia and in which shocks to lamps otherwise mounted for movement along the document are eliminated as compared to conventional half-rate mirror systems.