Hardcover book prepress and postpress knowledge

First of all, please confirm that there are all the necessary files in the book Printing document. Please confirm that the image file in the book Printing document must be included. Sometimes the image can be displayed, but the image is actually missing or the resolution is low, so please confirm the necessary file. image and provide sufficient precision to the image file in the document.

Don't forget to copy in the necessary fonts. Please make sure to provide the necessary styles. Although some fonts are displayed, you still need to copy in the fonts that can be exported before outputting. Only fonts that are guaranteed to be displayable and typeable will not waste your own time.

Don't forget to convert the color of the linked picture from RGB to CMYK, otherwise the film will appear color confusion after the film is produced.
When the Pantone spot color is converted to CMYK color, please confirm whether the same effect will be achieved. After the Pantone spot color is converted to CMYK, there will generally be a certain difference between the two. After some Pantone spot colors are converted to CMYK, the same effect can be achieved according to the output experience, but those Process Pantone Colors must not be achieved by CMYK, then only It can be solved by adding spot colors.
Double scanning of pictures; single output, which can improve the scanning quality of pictures.
The simple question of whether the bleed 3mm is set for the typesetting file often makes some experienced computer experts fail; are the colors in the typesetting software set according to the color scale value? So please do a final check of the book Printing document.
The printing proofing corresponding to the film is the most worry-free reference for the printing factory. If there is no proof for various reasons, please provide at least one print (color is best, if there is no proof, black and white is also good).