Volume, Volatility, and Market Quality, when Informed Traders Disagree

A device for application to photographic printing machines, by which sheets of light-sensitive paper cut from strip are advanced and positioned at a print station and then transferred to a successive developing machine, wherein the device (5) affording the printing surface is capable of traversing movement in the transverse direction, supported slidably on suitable guides and translated along the guides by drive means activated by means controlled in turn by means capable of sensing and determining an exact selected position, all of which conventional, the alternating transverse movements of the device (5) affording the printing surface being such that sheets of light-sensitive paper (A1, B1, C1, D1) exhibiting width less than half the working width of the maximum print size handled by the machine are transferred after printing directly to the successive developing machine arranged in alternation and in co-ordinated sequence on two or more parallel conveying lanes.