Check image proofs during printing
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Depending on the workflow used by the print service provider and the nature of the job you are submitting, the sample may be inspected at various stages of the production of the job.
You may have been checking the same content for a long time, they all look the same at first, and when you are eager to sign, it is easy to create blind spots and ignore some important issues. Below we will list some of the issues you should be aware of when reviewing proofs at various stages of production.
Check image proofs
Image proofs are sometimes referred to as random proofs or spread proofs, and because there are only images on these proofs, there is no information on any page layout. If you don't know how the scanned image or digital photo will be copied, or if you don't know if the print service provider has already done the scan for you, you may want to check the image proof before moving on to the next production step. .
Check the following parameters:
Size. Is the image size correct? If you want to reuse the same image of different sizes in one project, check that the scaling of each image is correct.
Cut. When you plan to put an image into a page layout, can it fill the entire target area? Never cut the content that should not be cut. In addition, if you only need to use a small part of an image, you can cut out unused images to save storage space and speed up processing.
Direction. Make sure that the image you are working on is used horizontally or vertically in the final layout.
Angle. Is the current angle of the image the same as it is used in the finished product?
Match the original. Can this sample really reproduce transparent originals, reflective artwork or digital photos? The degree to which the proof is matched to the original is sometimes a subjective evaluation, but we can check if the proof matches the original with only CMYK four-color paint.
Color. Is the proof too dark, too bright or lacking contrast? Are neutral colors like white, gray, and black printed with colors we don't want? For example, gray areas such as concrete roads or asphalt roads should be carefully inspected to ensure that they are not printed in red, blue or green.
Details. Are the details of the highlights and shadows of the image clearly legible? If the original image or the original itself lacks detail, then we don't have to think about it during the copying process, but if the originals from the customer have details, we will keep them.
Moire stripes. Especially when shooting or scanning originals with patterns (woven fibers or geometric patterns, etc.), we need to specialize the image. Sometimes we can use the "slight blur" option in Photoshop to avoid the appearance of moiré. You may also want to determine which situation you are most intolerant of – whether it is a damn moiré or an image detail that is lost after blurring.
Outline map. This is a great opportunity to check the edges of your images, whether you created them yourself or have the print service provider create them for you. Some of the contours that are acceptable on the screen are not the same as the actual proofs, and you may want to clean them up.
Retouching. If you have asked the print service provider to retouch the product, can the sample you get show this effect? Do you need additional processing of the proofs to achieve the results you want? Is there a problem on this sample that has not been shown before and now needs to be solved?