| 摘要 |
PROBLEM TO BE SOLVED: To provide a system for including a watermark, which is a type of security element that can be applied to various documents.SOLUTION: A system creates a copy of a document by: receiving an electronic representation of a document to be copied onto a substrate 501; identifying a non-invasive watermark to be printed on the substrate 502; analyzing the document and the non-invasive watermark to determine whether a threshold amount of the non-invasive watermark can be printed in a white space of the document 503; and creating a secure copy of the document with the watermark. If the threshold amount of the non-invasive watermark can be printed in the white space, the system prints at least a portion the non-invasive watermark in the white space 504. Otherwise, the system modifies at least a portion of the non-invasive watermark to an invasive watermark portion 510, and prints the invasive watermark portion over a portion of the document's content 512.SELECTED DRAWING: Figure 5 |
