| 摘要 |
PROBLEM TO BE SOLVED: To instruct an operation by writing instruction contents on a document with an ink material that is erasable when heated, and reading the written instruction contents.SOLUTION: A user writes instruction contents on a document G with the ink material that is erasable when heated, with respect to a first side of the document G with which a source image 1605 has been formed already. After the first side of the document G is read by an image reading section 100 and an image including the source image 1605 and the instruction contents is stored as first information J1, when the document G is to pass through a fixation section 50, only the instruction contents are erased at a fixation temperature. Thereafter, the first side of the document G is read by the image reading section 100 again and the source image 1605 is stored as second information J2. A differential image (a count designation 1603 and a color mode designation 1604) between the first information J1 and the second information J2 is calculated/extracted. On the basis of a result of the calculation/extraction, the instruction contents are specifically recognized through recognition of numerals or characters, and an operation instruction is generated.SELECTED DRAWING: Figure 14 |
