The printing apparatus includes a processing system to generate a plurality of print data, a printing method

A printing apparatus for printing on a print medium from the print data received by the plurality of host devices, said printing apparatus comprising: a first storage means (RAM), stores the plurality of receiving from a host device to print data; a second storage means (a hard disk), data access speed slower than the first storage means, when the print data of said first storage means for storing previously received, said second storage means stores the said plurality of received print data to another host device; receiving means, the print data received in parallel from the plurality of host device; determining means for determining whether or not the first memory means is being used; controlling storage processing means, said determination means determines that a case where the first storage device is not used, the process starts for the first memory of said first storage means storing a first received print data in the first storage being processed and the said determination means determines that the case where the first memory means being used to start the second storage means for storing the access A second storage processing of the second print data.