1, handwriting cleaning of genuine book printing
2. Genuine books have the name and website of the publishing house.
3. Genuine books have bar codes, which can be found online.
Genuine books refer to books legally authorized by authors or copyright owners and printed and published by publishing houses or other organizations with publishing rights. Special price books may be genuine books or pirated books. Because books are now overpriced, many special-price books still have enough profits, and some special-price books are clearance books. These are genuine books, but the price can be very low. In addition, all pirated books have low cost because they don't need to pay copyright fees, so they are circulated at low prices in the market, and it is not easy for ordinary readers to tell whether they are genuine books or not.
Pirated books refer to books published without the authorization of the original author or publisher. Pirated books generally have bright cover colors and muddy handwriting. The cover paper is thin and the offset glue overflows. Pirated books can be judged from many aspects, and the harm of pirated books is countless.
1. Low-end pirated books. The overall printing quality is poor and easy to distinguish. It is manifested in the following aspects: poor paper (thin paper, yellow and gray), uneven ink color, hue deviation, inaccurate overprint, blurred image, tape marks or imposition marks on the edges of pictures and texts, uneven cutting of finished products, poor binding quality (many quality problems such as missing lines and wrong pages), and many text and punctuation errors (some typos can reach more than ten yards).
2. High-end pirated books. The overall printing quality is high, which is not much different from the original book and difficult to distinguish. The paper is better, the ink color is more uniform, the hue is better, the overprint is more accurate, the image level is clearer, the finished product is cut more square, the binding quality is better, and there are fewer text errors.