B bleeds An extra amount of printed image which extends beyond the trim edge of the sheet or page.
The degree of thickness of paper. In book printing, the number of pages per inch for a given basis weight. In binding, the gathering of sheets or signatures. DPI Dots per inch, or DPI, is a measurement of output resolution - the addressability of output devices like printers and imagesetters. Addressability is how many dots horizontally and vertically a printer can possibly print, or an imagesetter can possibly image.