First thing we noticed was the fact that the document's colour set up would of needed 6 plates when the agreed amount was 5, this means that one of the spot colours shouldn't be in the menu. To fix this, we deleted the spot colour from the swatch menu.
The next mistake we found was one of the images has been output as a jpeg rather than a tif or an ai file. This means the image has been compressed and the quality wont match the rest of the document.
The next mistake we saw was the fact the images have been resized on InDesign rather than the source file itself. This will make the document unnecessarily big or too small which could lead to problems in processing the print job or compressing the file. TO fix that, it is edited in photoshop to change the percentage size difference to what indesign said.
Once this has been saved, the changes are made and the document is correct.
Some images have been saved as an RGB file, this was noticed in the link info palette and was fixed by converting the original image in Photoshop to CMYK.
This is now in CMYK.
Some images have a lower resolution than 300dpi.
Some images have drastically high resolution which would create problems in processing later.
One of the colour swatches have been set as an RGB. To fix this, the swatch was changed into the right colour mode and adjusted to the right tint.
Something else we found was one of the images didn't bleed off the page, this could of caused problems in the cropping process.
The last thing that we noticed was that the website was coloured with the registration marker, this makes the layer appear in every colour plate. To fix this, all that needs to be done is to change the colour to black rather than registration.
When sending an InDesign publication to printers use the package function to sort it all out unless you are exporting it as a pdf, then export it as a press quality.
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