If copyright permits you then it's not a problem at all otherwise you are not expected to violate copyright rule. In case of open access journals you may do so.
Ethically, you are supposed to contact the publisher if the article can be redistributed. Or you can send it privately to whoever requested for the article with caution.
Can we send published paper to those who request for it?
Why not....if the paper is published and you are one of the author of the paper you can send....i don't think so there is any copy right issue. If the published paper is not even access openly, one can download by using different sources...
If the article is open access from the journal publisher, you can share it publicly or private. If it is not open access from the publisher, share the article privately, otherwise it is considered as violation of copyright.
It depends. If the publisher grants open access to your article there is no need to ask him for permission. So you can share it both publicly and privately. If you have paid for the article to be published, also.
But if you have agreed to transfer the publisher all your copyright (print copies and online) you can't share the article anymore.
In most jurisdictions it is not a problem to send your article privately to another person (based on exception for private copying). It is another question if you post it online.
If someone requests you for a reprint copy of your published paper do oblige him/her with caution in the forwarding letter that it is for study, education, research or training purpose only where any monetary return is not involved, and also that due acknowledgment or citation should be given when this work is refereed for some thesis, research or review etc. For all commercial interests of the requesting person he/she is obliged to purchase copy or get license from the owner of copyright (whether publisher or you).
if paper published in journal or conference proceeding volume, must have open access. Not necessary to send copy of full paper. Be careful ,Copy right problem may not be ruled out.
If copyright permits you then it's not a problem at all otherwise you are not expected to violate copyright rule. In case of open access journals you may do so.
Why did you publish in case use cannot spread the knowledge generated by you at your own will? Researchers must come out of the fear complex. Publisher has the right to earn from the copyright available to him from the author but he does not have the moral right to stop the author (original creator) from disseminating such knowledge at his will. The publisher is bound to lose legal battle from author under tort law (over exploitation) because he has not paid enough to the author for getting such fetching copyright.
I won't insist, but it was important to consider the perspective that I gave differently....
Reputed journals should not and may not mind if you share your work for the sake of knowledge sharing for further knowledge building or literary aesthetics(!) , i.e. without any financial gain/business motive, and with the understanding that the recipient will also not subject it to commercial use.
Read the terms and conditions of the paper publisher, if it permits you to send it privately. However, you should make sure that the requester is not going to post it online in any case.
Read the terms and conditions of the paper publisher, if it permits you to send it privately. However, you should make sure that the requester is not going to post it online in any case.