| 摘要 |
PROBLEM TO BE SOLVED: To provide an image formation apparatus having high security performance.SOLUTION: A storage part 9 stores job data 92 of a plurality of jobs. When output and becoming unnecessary, the job data 92 are deleted by overlay deletion. A job data deletion control part 81 selects the job data 92 again when, in execution of a job, an interruption job occurs during execution of the overlay deletion of the job data 92 already output. In such a case, the job data deletion control part 81 overlay-deletes the already output job data 92 in decreasing order in data size when the capacity of free area of the storage part 9 is large. When the capacity of free area of the storage part 9 is small, the job data deletion control part 81 overlay-deletes the already output job data 92 in increasing order in data size. The operation enables efficient deletion of the job data 92, resulting in enhancement of security performance. |
