Data transmission system and data transmission method suitable for detecting problems in image processing

摘要

Provided is a data transmission system for detecting and predicting the occurrence of problems in image processing of a printing job before starting printing. A gateway registers a printing job that is received from a user terminal in memory, then transmits the printing job to a MFP. The MFP transmits printing data information to the gateway indicating the data amount in time when an image processing unit performs image processing on the printing job. The user terminal transmits printing data information to the gateway indicating the data amount in time when a simulated image processing unit perform a simulation process on the printing job. The gateway compares the printing data information, and when there is a difference in data amounts, registers problem information in memory indicating that there is a problem in image processing by the simulated image processing unit or the image processing unit.