❏ The sprocket hole must be a circle or notched circle.
❏ The holes must be cleanly cut.
❏ If the horizontal and vertical perforations are crossed, the shaded area below should not be
printed on. Uncrossed perforations do not have this restricted area.
A:
B:
1.
2.
28 mm (1.1 inches)
3 mm (0.12 inch)
vertical perforation
horizontal perforation
1.
2.
crossed perforation
uncrossed perforation
❏ The ratio of the cut/uncut length at the perforation should be between 3:1 and 5:1. And
expansion at the perforation (when the paper is kept flat) should be less than 1 mm (0.04 inch)
as follows.
1.
2.
3.
3 mm cut
1 mm uncut
1 mm or more
LQ-780/LQ-780N User’s Guide
Product Information 114
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