When a publishing house wants to reprint a book, if the original book is perfect and does not need to be revised, it will directly take out the original and send it to the printing house for printing. The situation of photocopying is that the original version can't be found and destroyed, but the original appearance of this book is more meaningful, so we should look for the printed matter that has survived, take photos on each page after finding it, and reprint it into a new one.
In the past (that is, before entering the customs), if there was not enough domestic money, I would definitely not get the skirting line of others, and I didn't want to spend time rearranging it, so I bought a book for photocopying, mostly pirated (Chinese piracy, haha).
Of course, the above actions are not allowed after entering the customs, but we all know that the original book (published in developed countries) has better printing quality and paper, and of course the price is more expensive. If you want to buy this kind of books in China, you can buy the international edition (published in third world countries such as India and Indonesia, with relatively poor printing quality and paper). However, if a book is of good quality, it is estimated that there is a great domestic demand, and some publishing societies copy and publish it in China in the form of buyout of copyright.
This kind of photocopy book only makes some adjustments to the cover, and the content and even the typesetting remain unchanged (if it is changed, it will not be called photocopying), but the quality of paper and printing is not the same as that of the original.
Why do you use photocopying? It's definitely not mentioned above. Backplane not found. I think the use cost of the original backplane copyright is higher than that of photocopying copyright. This is considered from many aspects, such as the number of prints using the backplane and the number of domestic demands.
In short, the photocopied version should be original.