1. scanned version: scanned PDF file.
2. Photocopying: the original, copyright or copyright of the original.
Second, the technical principles are different.
1. Scanned version: Displays pictures or graphics on the screen through the left and right movement of electron beams and radio waves.
2. Photocopy: If the whole book is completely copied from the original book of the original publishing house and then published in the name of the original publishing house, it must be marked "Photocopy".
Third, the characteristics are different.
1. scanned version: Before scanning the original, first check whether the original is within a limited color range or whether there is abnormal color balance. Of course, you must first find out the deepest dark height area in the original work.
2. Photocopying: Photocopying is mostly English books or ancient books.
Baidu encyclopedia-photocopy edition
Baidu Encyclopedia-Scan