Hardcover books are usually sewn with elastic spines that allow the
Book to sit flat on the table when opened. Nowadays, the spine is often used to bond instead of traditional sewing. Hardcover books are mostly printed on acid-free paper and are more durable and long-lasting than paperbacks, but they cost more and are more expensive. Hardback books are generally covered with elaborate jackets.
On the appreciation of hardcover books should pay attention to several aspects
Appreciation of hardcover books from the following aspects: printing, appearance, text, feel
Step 1 Print
(1) Divided edition, especially foreign factories print the same version of multiple versions of books, no mixed edition, pay attention to text, symbols and so on.
(2) Positive and negative printing without printing errors, positive and negative printing, accurate overprinting, error ≤0.2mm.
③ Is the printing hue completely consistent with the color manuscript provided by the guest? The use of German R410 color density meter, the main picture color difference in the range of ±3%.
(4) Front and back printed pictures, pictures and colors.
⑤ The text, the pattern is clear, and the gloss is strong.
The dot is full, 5% fine net is not lost, large point bright and clean not paste, dot increase value ≤10%.
⑦ No ink bars, water bars, ink skin, broken word, paste plate, etc.
No rub dirty, key, double, off version, fly water, scratch, fly ink, deink, etc.
⑨ No multi-corner film marks, clean layout, no stains, no powder, etc.
Step 2: Appearance
Shell square, no stains, no flower marks, no wrinkle, paste flat, no bubbles, no damage, ridge word points, plug cloth length and thickness of the skew, the circular ridge arc degree is generally greater than the thickness of the book 5~6mm, the curvature of the spine and the curvature of the book.
3. Text
Inner text lining paper and shell floating mouth three side position is consistent, book block is generally less than shell 3mm not skew, spine and mouth flat, square ridge does not appear horn type, no knife flower, cut oblique, book block and shell center bar position no drop, pinhole no glue, string no broken line, line loose, stains, no size page, page order disorder, glue height between post and post 1~3mm, no empty glue, false glue.
Step 4 Feel
The book has a sense of solid weight, the book slot obviously has a sense of depression, the shell surface before and after turning 180 degrees without squeaking, the shell surface slot and the lining paper appear false sticky phenomenon.
In addition, WIRO
Hardcover Book, in addition to the quality of the binding process related to the above, the two holes must be in the center, the hole is flat, no burr edge, the closing position is 1mm, the wire does not exceed the book block. In this way, there is no lack of simplicity in the modern aesthetic feeling, and more exquisite in the modern craft.
In short, a good hardcover book is not an accidental gain, the production process needs strict quality control of each process, until the final process product quality is fully qualified.
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