Print a .svg document without a black background on imported image

Question

I am using GIMP 2.8.10 and inkscape 0.91 on Windows. I want to:

1. Manipulate a photo in GIMP's .xcf format by removing the background -- it should be transparent.
2. Export the image in .png format.
3. Import the .png into an Inkscape .svg document. Thanks to transparency, I should be able to see the lines in the layer beneath, unlike this screen shot where the white background blocks them:

5. Print the .svg document with the background transparent instead of black.

Right now, if I print what is above but with a transparent background for the picture, I get a black square with a tree on it.

In this particular case, I can use a white background for the picture and simply put that layer beneath the one with the lines. But this will be inadequate as complexity increases.

I've tried a dozen permutations for both GIMP export (alpha channel for layer, .png export settings such as transparent pixels, etc.) and Inkscape import and preferences (alpha background color).

I could export from Inkscape to .png, but surely that isn't necessary.

Can you describe a successful trip from GIMP to Inkscape, step-by-step?

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Update:

I ran across posts that discuss layer opacity in Inkscape and also a recognized bug. I decided to export to .png for my printing.

Answer 1

1. Ensure every object has zero transparency. Make all layers visible and unlocked, "Select All in All Layers", go to the Fill and Stroke panel and set the Opacity slider to 100%.
2. Other points that may apply: Page background color in Document Properties (set to white) and transparency for each layer (set to 100% opaque). I've wasted too much printer ink already to want to check whether these are critical.
3. Inserting bitmap images may cause a problem.

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A known bug when using the 64-bit version of Inkscape on a 64-bit Windows OS may be the culprit. Simply replace with the 32-bit version.