In most cases work should be submitted to repro with at least 24 hours notice or, for unusual or very large print runs, 3 days notice.
However there are two "emergency hours" each day in which it is usually possible to accommodate smaller jobs (e.g. a single class set of 30 copies from 8 or fewer originals, and no complex finishing). For jobs such as this the deadlines for submitting work are as follows:
Period 1: By 12 noon the prior school day
Period 2: By 8.30am the same day
Period 3: By 9am the same day
Period 4: By 10am the same day
Period 5: By 12 noon the same day.
If you have urgent copying needs after these deadlines please take the work to repro in hard copy and discuss it in person.