Book binding system

A book binding system, comprising:

• a book block supplying machine configured to supply a book block;
• a book binding machine configured to receive the book block fed from the book block supplying machine and attach a cover to the book block so as to make a bound material;
• an accumulating machine configured to accumulate the bound material made by the book binding machine;
• a trimming machine configured to receive the bound material fed from the accumulating machine and trim edges of the bound material;
• and
• a controller connected with the book block supplying machine, the book binding machine, the accumulating machine and the trimming machine, wherein
• the book block supplying machine comprises:
• a reader configured to read job information from an information portion printed on the book block;
• and
• a timing adjusting portion configured to adjust a supply of the book block in such a way that the book block is fed toward the book binding machine at a supply timing, wherein
• the job information includes:
• an information regarding an accumulating number of the bound material accumulated by the accumulating machine;
• and
• an information regarding a making speed at which the book binding machine makes the bound material, wherein
• the controller comprises:
• a job information acquisition portion configured to acquire the job information from the reader;
• an upper limit processing speed acquisition portion configured to acquire an upper limit processing speed at which the trimming machine or the accumulating machine processes the bound material;
• a making speed decision portion configured to adopt and decide the making speed;
• a making speed instruction portion configured to instruct the book binding machine to make the bound material at the making speed;
• a timing decision portion configured to decide the supply timing based on the making speed, the upper limit processing speed and the accumulating number;
• and
• a timing instruction portion configured to instruct the timing adjusting portion to supply the book block at the supply timing, and wherein
• the upper limit processing speed is composed of a first upper limit speed or a second upper limit speed, the first upper limit speed is composed of an upper limit speed at which the trimming machine trims the bound material, the second upper limit speed is composed of an upper limit speed at which the accumulating machine feeds the bound material, and
• a slower one of the first and second upper limit speeds is adopted as the upper limit processing speed.