Patent ID: 8331846

Claim:
A book binding system comprising: an image forming apparatus for forming an image on a sheet; a book binding apparatus having a coating section for coating adhesive onto a spine of a sheet stack and forming a booklet by coating with the adhesive and binding a plurality of sheets on which images have been formed at the image forming device; an operation and display section for inputting an operation and displaying a state of the book binding system; an external communication section for communicating with an external device, wherein the external communication section receives a job command for executing a book forming from the external device; a coating condition memory section; and a coating control section for controlling a coating amount of the adhesive of the coating section in accordance with a sheet type representing a regular paper, a high grade paper, a coated paper and the like, wherein the coating amount when the sheet type is the high grade paper or the coated paper is larger than the coating amount when the sheet type is the regular paper, wherein the coating condition memory section memorizes the corresponding relation between the coating amount and the sheet type, and the coating control section decides the coating amount based on either one of a sheet type information inputted at the operation display section and the sheet type information included in the job command received through external communication section and on the corresponding relation between the coating amount and the sheet type memorized at the coating condition memory section.