How do I prevent left and top white lines on a black picture?

Solution 1:

Answering my own question. What I finally ended up doing is copying the block of cells, and pasting that as a linked picture in the same sheet. Then do a tiny bit of cropping. From there on always copy that picture (which automatically changes with the original block) to wherever I need it.

Added advantage is that I can blow up the size of the picture so that I can increase the number of pixels, giving me a great picture (font) resolution outside of Excel.