Perfect Binding is the only binding method, aside from Hardcover (Case) Binding, that allows for printing on the spine and therefore is very popular for publications that will be stored on shelves, such as novels, magazines, catalogs, or manuals. It is also useful if there is a desire for artwork on the spine to add an extra touch.
Perfect Binding is usually the preferred option for these applications as Hardcover (Case) Binding is much more expensive, as unless the quantity is in the thousands (say 5000+), much of the work is still done by hand or mostly by hand.
We can print on the spine, however, it first needs to be calculated based on the number of pages and the thickness of the inside paper. It is recommended that you upload your print-ready file with the page size set as the trim + bleed and then email our support team to provide you with the thickness of the spine so you can submit the file separately.