Abstract: A printing system includes: a plurality of printers; an information processing apparatus including a designation unit configured to receive, from user's input, search condition for searching the printers in which the print jobs are to be registered, a search unit configured to search for the printers satisfying the search condition received by the designation unit, a determination unit configured to determine the printers from the printers searched by the search unit, and a registering unit configured to register print jobs based on a same print target in the printers determined by the determination unit. The printer in which the print job is registered starts printing in response to a print instruction.

Abstract: A printing system, in which a printing job based on a same printing target is registered in each of a plurality of printers and one of the plurality of printers performs printing in response to a print instruction of the printing job thereto, the printing system including; a determination unit that determines, when registering the printing job in each of the plurality of printers, a registration destination of the printing job for each of the plurality of printers such that both a printer having the printing job registered in a volatile memory and a printer having the printing job registered in a non-volatile memory exist.

Abstract: An automatic focussing device which functions to bring a video disc surface in focus with an optical system is disclosed. The device comprises a hologram for producing a focussing luminous flux having astigmatism with or without coma and a video signal reading out luminous flux without having astigmatism with or without coma, a relay lens having an optimum image forming plane, and an objective lens arranged such that said optimum image forming plane and said video disc surface are conjugate with respect to said objective lens.