| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem that, in the case of sending confidential documents or a plurality of documents using window envelopes, enclosing these documents in the envelopes and posting, and sending direct mail directly to specific customers, are incessantly carried out, and in consequence, a large number of mail and delivery objects are put in a mailbox of each customer every day, and each customer selects required mail and delivery objects in a range confirmable from envelope senders and the windows out of the large number of mail and delivery objects and opens only the selected mail and delivery objects, frequently discarding the other mail and delivery objects even without opening them. <P>SOLUTION: A transparent relief hologram sheet is attached to a window of the window envelope to attain differentiation from other mail and delivery objects. Furthermore, copying an address by a common copying machine is made difficult to provide the window envelope attaining also a copy preventing effect. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
