Dual mode control logic for a multi-mode copier/duplicator

In an automatic reproducing machine comprising:

• movable scanning means;
• document original feeding means;
• xerographic step implementing means including means for charging a photoreceptor layer;
• means for image-wise exposing said layer to form a latent electrostatic image;
• means for developing said electrostatic image;
• and means for transferring the developed image to a copy sheet;
• the improvement comprising:
• a control circuitry for operating said machine selectively in a first mode, wherein said document is held stationary and said scanning means is moved past the document to form a scanned image or in a second mode, wherein said scanning means is held stationary and said document feeding means feeds said document past said scaning means to form an image,
• said control circuitry first logic means for operating said machine in said first mode and second logic means for operating said machine in said second mode, said first and second logic means generating a plurality of signal outputs for actuating said xerographic step implementing means;
• means for generating a signal indicative of the mode in which said machine is set;
• and
• buffer means for receiving said actuating signal outputs and for selectively applying them to said implementing means, said buffer means including multiplexing means responsive to said mode signal for gating the desired actuating signal outputs corresponding to the mode in which the machine is set to said implementing means.