Patent ID: 7263328

Claim:
An image forming system adapted to be able to supply sheets of a job subjected to a printing process by a printing unit included in an image forming apparatus from the printing unit to a glue binding unit included in a sheet processing device, the printing unit being capable of performing a printing process for data stored in a storage unit which can store data of a plurality of jobs, the glue binding unit being capable of performing a case binding process that requires a gluing process for a set of sheets of a job subjected to a printing process by the printing unit in a binding process that needs to attach a cover to the set of sheets, the image forming system comprising: a control unit that inhibits an execution of the case binding process for a job in a case that the job to be processed is a job that requires sheets of the number of sheets more than the number of sheets corresponding to a first condition for a printing process for a set of sheets, the control unit inhibiting an execution of the case binding process for a job in a case that the job to be processed is a job that requires sheets of the number of sheets less than the number of sheets corresponding to a second condition for a printing process for a set of sheets, the number of sheets corresponding to the second condition being less than the number of sheets corresponding to the first condition, the control unit permitting an execution of the case binding process for a job in a case that the job to be processed is a job that requires sheets of the number of sheets which is less than the number of sheets corresponding to the first condition and more than the number of sheets corresponding to the second condition for a printing process for a set of sheets.