Image Shadows Darkening and Pixelating

Question

I am not sure what to even call this - but we have a file we are printing as a part of a large 25x11" trifold with many images throughout. We're having repeated issues with one image in particular where the shadows appear to be blending into one "blob" of color and having a hard edge to them. (Image smoothing issues maybe?) - We even tried changing the photo, but the new photo has the same issue. Looks fine on a screen and our Canon press prints the photo just fine, but our Konica has this issue when printing. We can't run the job on the Canon due to tray size limitations.

Any ideas what causes this, how to fix it, or even what this issue is called?

In the file:

Hannah33478388eg88_0-1765301259042.png

Photos of the Print:

Shadow under the hands in the foreground, the table in the right side and in between fingers in the background area as well as on Bible pages.See the shading under the hand?Three spots between fingers

Jeffrey_Smith · Answer

This appears as though the DFE (Digital Front End) for your Konica printer is using a UCR setting (Under Color Removal) during the conversion to print data. UCR will reduce the CMY of an image when converted from RGB to CMYK, leaving mostly K. If the UCR curve is abrupt, a posterized image can result.

If UCR is the cause of the issue, you can convert this image to CMYK in Photoshop using a profile that doesn't utilize UCR, like the U.S. Sheetfed Coated profile.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded