Today I'd like to tell about copyright.
In many libraries, it is prohibited to copy a map like a housing map more than a half of a two-page spread.
Many of you may think that we can copy anything in a library, but there are some restrictions on making a copy of works.
The reason why it is prohibited to copy a map more than a half of a two-page spread is as follows:
1. We can copy only a part of a work in a library in accordance with the Copyright Act.
2. "A part of a work" is interpreted as less than a half of the work in practice.
3. As for the housing map, a two-page spread is considered to be a single work.
Therefore, if you copy a housing map more than a half of a two-page spread, it would not "a part of a work" and it is prohibited by the Copyright Act.
Specifically, it is prescribed by law as follows:
In general, each page of a map book is linked to the other page and the entire book is regarded as one map.
(Reproduction in libraries, etc.)
Article 31 (1) In the following cases and as part of non-commercial undertakings at the National Diet Library or at a library or other facility specified by Cabinet Order whose purpose is to offer books, records, and other materials for the public to use (hereinafter referred to as a "library, etc." in this paragraph), it is permissible for a person to reproduce a work from a book, record, or other material of the library, etc. (hereinafter referred to in this Article as a "library material"):
(i) when providing a single user of the library, etc. with a single copy of a part of a work that has been made public (or the whole of a work that has been made public, if it is an individual work that has been printed in a periodical and a considerable period of time has elapsed since its publication) in response to the user's request and for the purpose of the user's research or studies.
Therefore, I think it is natural to regard one map book as one work.
Moreover, in reality, if the area which we want to copy is printed astride a two-page spread, it would be very inconvenient that we can copy only half of that.
This inflexibility might be a difficulty of Japanese Copyright Act.