| 摘要 |
PROBLEM TO BE SOLVED: To improve workability by preventing the occurrence of a jam by an entrance of a sheet having an unspecified thickness into a sheet sorter. SOLUTION: When a sort mode is selected and a sheet of a kind of unsortable unspecified thickness is set by a sorter, for example, characters such as 'A sorter and thick paper cannot be simultaneously set.' are displayed on a warning area 72 of a liquid crystal display part 56 of an operation panel 54 without performing the sort mode to issue a warning.
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