I copied some papers in the library. A's behavior is permitted by law. If the copyright owner declares that it is not allowed to use it, it will be excluded from the scope of legal use, that is to say, legal use is generally restricted by the copyright owner's statement.

In addition, when using a work, it must not affect the normal use of the work, and must also reasonably harm the legitimate interests of the copyright owner.

There are the following situations:

1. Textbooks compiled and published for the implementation of the nine-year compulsory education and the national education plan (the author declared in advance that they are not allowed to be used);

2. After the works are published by newspapers and periodicals, other newspapers and periodicals can reprint excerpts (the author declares in advance that they are not allowed to be used);

3. Works that have been published in newspapers or spread on the Internet can be reproduced and edited on the website (the author declares in advance that they are not allowed to be used);

4. Producers of sound recordings use music works that others have legally recorded as sound recordings to make sound recordings (the author declares in advance that they are not allowed to use them);

5. Radio stations and television stations broadcast published works of others;

6. Radio and TV stations broadcast published recordings.