| 摘要 |
PROBLEM TO BE SOLVED: To obtain an envelope properly bound without mismatching by utilizing inside surfaces of a front sheet and a rear sheet for the envelope as information describing surfaces, increasing or decreasing at random sheets corresponding sealing sheets in the envelope, further eliminating the mismatching and providing the information describing surfaces responsive to a receiver. SOLUTION: This envelope sequentially supplies sheets 2 each having a cutting sew line 3 along at least the same three sides in the same size to a printer 11. A front sheet a, predetermined number of intermediate sheets c, and a rear sheet b are formed. Opposed sides of the sheets when the sheets 2 are superposed in the state that predetermined number of the sheets c are disposed between the sheet a and the sheet b are coated with an adhesive 8, the sheets 2 are sequentially superposed so that the predetermined number of the sheets c are disposed between the sheet a and the sheet b, and adhered through the adhesive 8.
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