I am wondering the qualitative difference between a printed journal publication and E-journal? Whether both have same impacts. I understand that impact varies from journal to journal and publisher to publisher. But I am talking about the reputed publishers only e.g. Springers, Elsevier etc. I would also like to mention that the said printed journals here are elecronically availalbe first while e-journals have no printed version.
So how good to publish a paper in an e-journal? Whether papers published in e-journals give same impression as in printed journals?
You appear to be confusing together two different issues: open-access vs. paywalled and printed vs. electronic.
Let us start with printed vs. electronic: the difference between a article available electronically vs. an article available only in print is that the article available electronically will be read and a paper article generally will not. With a very small number of exceptions, for the most part electronic access is the means by which scientists access journal articles these days. If they journal is not open access, then the researcher will be using an institutional subscription.
Now, as for open access vs. paywalled: some studies have shown that open access articles tend to be read and cited more than paywalled articles in similar quality journals. For both open access and paywalled articles, however, the primary determinant in how they are viewed is the quality of the journal in which they are published, and in both cases there are excellent journals and terrible journals.