How Inline Inspection Reduces Waste in Digital Book Printing

In digital book production, a defect discovered after cutting and binding is expensive. Inline inspection moves part of that quality check into the press, while the job is still running.

CCD systems on production inkjet presses monitor registration, missing nozzles, streaks and other print defects. When a deviation is detected, the press can flag the sheet or adjust registration before a large quantity is affected.

For duplex book work, front-to-back alignment is particularly important. A registration error of a fraction of a millimetre can be visible on facing pages, especially on thin paper. Inline inspection provides continuous feedback instead of relying on occasional pull samples.

Inspection does not replace the operator, but it reduces the number of defective sheets that reach finishing. That saves paper, ink and binding time, and it makes short runs more predictable.