Instruction file execution device, instruction file execution method and job flow system

An instruction file execution method comprising:

• receiving an instruction file and a usable credit amount, the instruction file describing a job flow which defines linking of a plurality of jobs;
• comparing an execution charge of a job being handled of the jobs of the received instruction file with the received usable credit amount;
• and
• if the comparison determines that the usable credit amount is greater than or equal to the execution charge, executing the job being handled.

A job flow system comprising:

• the instruction file execution device including a receiver which receives an instruction file and a usable credit amount, the instruction file describing a job flow which defines linking of a plurality of jobs, a comparison section which compares an execution charge of a job being handled of the jobs of the instruction file received by the receiver with the usable credit amount received by the receiver, and a job execution section which, if the comparison section determines that the usable credit amount is greater than or equal to the execution charge, executes the job being handled;
• a charge collection apparatus for collecting a charge;
• and
• an instruction apparatus which gives notification of a charge collected at the charge collection device to the instruction file execution device, to serve as the usable credit amount, and which sends a predetermined instruction file to the instruction file execution device.