I have an urgent question regarding the colour space. I have a file here which was originally grayscale, I have tried to convert it correctly numerous times but each time the printer rejects it. It needs to be 100% black - I have even paid someone to do it and when I open in Photoshop it sats the profile is Dot Gain, but that one was rejected too. The CMYK was rejected too, does that mean I have to do it in RGB? I have Creative Cloud and Acrobat Pro, I found how to go into Preflight menu and convert colours but don't know what to select...would appreciate HEAPS if someone can help
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