PPP™ in the Book Reprinting Work Flow
PPP™ can be effectively used for high quality reproduction of existing paper books.
Precise Page Positioning™ is used by many of our customers for producing high quality reprints of existing books. Libraries and institutions battle against deteriorating quality of rare and damaged books. The answer:
- High resolution scanning (600 DPI minimum)
For our purposes, high resolution scanning is defined as at least 600 DPI. This is the resolution threshold where page deskewing will produce a good quality image. Below this resolution, straight lines have a "saw-tooth" effect, which will be visible on the printed material. Other distortions will be introduced, mainly at the character level. 600 DPI bitonal resolution is the threshold which delivers a print-quality image.
- Post processing the images with PPP (deskew, despeckle, margin positioning)
It is rarely possible to perform a perfect scan of a page. In the real world, there will always be some kind of scanning errors introduced, like skewed paper placement, smudges on the scanning surface, incorrect alignment of the page, etc... For high quality reproduction, image cleanup is needed.
- Impositioning of images for book assembly (optional)
The impositioning process is the digital assembly of the books to be printed. The software takes care of arranging the pages for proper alignment from back to front, page sequence and spine adjustment, if needed.
- Print the books using Print On Demand systems or a traditional offset printing process.
A Print On Demand system is a digital printing process capable of producing one publication at a time. The publication content is available in a digital form (raster, Postscript, PDF, RIPed) and is printed as orders come in.