Problems printing photo with white background

[Justin]

Customer has supplied me with a school photo, white background. When I print it I get a slightly darker square around the edge of the image. Basically looks like there's a tiny amount of colour printing in that are. Not really noticeable until I print onto something large and then you can see the edge.

I checked the image in Photoshop and the white background is definitely 100% white. If I remove the white background and save as a PNG with transparent background the square goes so I'm sure it's the image.

Could this have occurred when the image was saved as a JPG?

[JSR]

You've not inadvertently picked Absolute Colorimetric as your rendering intent have you? That'll turn the white grey.

[Justin]

Customer provided image I'm afraid but that would certainly be a cause I guess. Wouldn't the grey show in photoshop when I use the dropper tool though?

[JSR]

I don't know Photoshop but it should certainly show if you go to soft proofing. Rendering Intent is when you go to print. Until then, white looks white.

If I switch between Absolute Colorimetric and Relative Colorimetric in Qimage, the Soft Proof certain shows the background being grey with AC rather than white with RC.

[Justin]

Pretty sure this must be the case, getting customer to check things there and and will check again here tomorrow, many thanks

[Paul]

can you not just change image profiling yourself Justin???