With hundreds of available paper stocks, the decision of which paper to use for your print run can be overwhelming. Most of all, it’s a decision determined by the type of book you are printing. A children’s or coffee table book? You’ll need a thick glossy sheet to help your color images stand out. A novel? Go cheap.
Book paper weights are different than the paper weight measurements you will see in an office supply store. A 20# bond that you would find at Staples is similar to a 50# offset at a book printer. A 24# bond is similar to 60# offset, 28# is similar to 70# offset, etc.
Typically, I would recommend that for a standard book with just black text (no color) and not a lot of images, 50# offset is just fine. If there are a lot of graphics in the book, you might want to bump up to 60# offset to eliminate some see-through from one side of the page to the other.
Don’t assume that the 20# bond paper you saw at Office Depot is going to be identical to the 50# offset paper you asked your printer to use. It won’t be. Different paper manufacturers produce their papers with different brightness, different opacity, etc. So always ask for paper samples from your printer.
Choosing paper stock for a book printed in full color is sometimes a little trickier. You may want to go with a glossy paper stock to make any images “pop” a little more. However, glossy stock often feels thinner than standard paper stock.
Also, if you are printing in full color, you’ll definitely want a thicker paper stock. You don’t want any see-through for your color images from one side of the page to another. I usually recommend 80# gloss for most color books. If you want a little thicker, step up to 100# gloss. If you are trying to save cost, drop down to 70# gloss - but never less than that.
I can’t say it often enough: No matter which paper stock you think you want, ask your printer for some samples first.
Always ask for your book covers to include gloss lamination. Standard paperback cover stock is 10 pt. C1S. A C1S cover means that it is coated on one side for durability and to help the colors “pop” a little more. If your book is on the large side, consider bumping up to a 12 pt. cover for extra durability.