1. A separate post-processing device for substrate wetting, comprising: a sheet transport path that transports a sheet of image receiving media between an image receiving media input and an image receiving media output; a scanning device positioned in the sheet transport path downstream of the image receiving media input in a process direction that scans an image formed on the sheet of image receiving media transported past the scanning device; a wetting device positioned in the sheet transport path downstream of the scanning device in the process direction that deposits a clear fluid on the sheet of image receiving media transported past the wetting device; and a controller that is configured to receive scanned image data from the scanning device, determine at least one of an amount and a positioning of the clear fluid to be deposited image-wise on the sheet of image receiving media based on received scanned image data, and control the wetting device to deposit the clear fluid in at least one of the determined amount and the determined positioning on the sheet of image receiving media.