Bind
To fasten sheets or signatures with wire, thread, glue or by other means.
Bleed
Items that extend beyond the image area or the trimmed edge of a printed page.
Bulk
The degree of thickness of paper. In book paper it is the number of pages per inch for a given basis weight.
Case Bind
A type of binding used in making hard cover books, either sewn or glued.
Crash
An open weave gauze cloth with stiff sizing similar to cheesecloth applied to the spine of sewn or glued book blocks to add strength to the binding. Can also be called Super or Liner.
Density
The degree of color or darkness of an image or photograph
Endsheets
Four pages each at the beginning and end of a casebound book, one leaf of each being solidly pasted against the inside board of the case. Endsheet paper is stronger and heavier than the text pages; may be white or colored stock, printed or unprinted; also called Endpapers, End-leaves or Lining Papers.
Finish
A complex paper property related to smoothness
Gutter
The space on a page between the edge of the binding and the first printed area.
Halftone
The reproduction of a continuous-tone image that is made by using a screen that breaks the image into various size dots.
Headband
A small decorative strip of silk or cotton used at the top and bottom of a case bound book to fill the gap normally formed between the spine of the book and the cover.
Hinge
The score or joint that is created near the spine of a book to allow the cover to open and close more easily.
Image Area
Portion of paper on which ink and images appear.
Inserts
A separate page or pages printed and inserted within a book’s text pages. Inserts are typically printed on a heavier paper or in a different color combination than the rest of the text pages.
Joint
The area next to the spine of a casebound book that provides the ability to open and close the cover.
Opacity
The property of paper that minimizes the “show through” of printing from the back side or the next sheet.
Page Count
Total number of pages in a book including blanks.
Perfect Bind
A type of binding that glues the edge of sheets to a cover, also called soft-cover or adhesive binding.
Score
A crease applied to paper to assist in folding.
Show-through
Printing on one side of a sheet that can be seen on the other side of the sheet.
Signature
A sheet of printed pages when folded become a part of a book or publication.
Spine
The binding edge of a book or publication.
Tint
A shade of color or combined colors
Trim Size
The size of a product after production is completed.
Tunneling
The effect that exists when the body of the book pulls away from the spine when the book is opened.
