Printing System and Printing Device

A printing device configured to receive print requests from an information processing device which is communicatable with the printing device, comprising:

• a first storage configured to store a plurality of print jobs corresponding to a plurality of print requests issued by the information processing device, the plurality of print jobs including a first reference job and a second reference job;
• an identifying unit capable of identifying a request source of each of the plurality of print jobs stored in the first storage;
• a first judging unit configured to judge whether there exist at least one close job which is defined such that a difference between a print start time of the first reference job and a print start time of each of the at least one close job is within a reference period and a request source of the close job has a predetermined relationship with a request source of the first reference job;
• a time changing unit configure to change the print start time of the first reference job and the print start time of each of the at least one close job to a time close to a print start time of the second reference job if the first judging unit judges that there exist the at least one close job, the time changing unit remaining the print start time of the first reference job and the print start time of each of the at least one close job as they are if the first judging unit judges that the there is no close job;
• and
• a printing unit configured to execute a print process regarding the plurality of print jobs when the current time coincides with each of the print start times of the plurality of print jobs.

A computer-accessible recording medium containing a program to be executed by a controller of a printing device, the program, when executed, controlling the printing device to execute time-designated print jobs, the program controlling the printing device to execute the steps of:

• storing a plurality of time-designated print jobs, the plurality of time-designated print jobs including a first reference job and a second reference job;
• identifying a request source of each of the plurality of time-designated print jobs stored in the first storage;
• first judging whether there exist at least one close job which is defined such that a difference between a designated execution time of the first reference job and a designated execution time of each of the at least one close job is within a reference period and a request source of the close job has a predetermined relationship with a request source of the first reference job;
• changing the designated execution time of the first reference job and the designated execution time of each of the at least one close job to a changed execution time close to a designated execution time of the second reference job if the first judging step judges that there exist the at least one close job, the changing step remaining the designated execution time of the first reference job and the print start time of each of the at least one close job as they are if the first judging step judges that the there is no close job;
• and
• executing a print process regarding the plurality of time-designated print jobs when the current time coincides with each of the changed designated execution times of the plurality of time-designated print jobs.