| 摘要 |
A computer performs the following processing: calculating a probability that a machine fails in work applied to a printed matter; calculating, as a production environmental load value, a value including a printing environmental load value, a paper environmental load value, a product of the probability and a re-printing environmental load value, and a product of the probability and the paper environmental load value, the printing environmental load value representing a degree of load put on the environment resulting from printing onto paper used for the printed matter, the paper environment load value representing a degree of load put on an environment resulting from production of the paper, the re-printing environmental load value representing a degree of load put on the environment until the printing unit has conducted printing again since the machine failed in the work; and displaying the production environmental load value on the display.
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