and I found the ink to make excellent black and white copies which were sometimes even better than the originals

In the photo, the left is the original and the right is the copy (I have put black lines through any brand names on the original and copy)

You can make it vibrant but the trade off is that you will go through lots of ink and still not be quite as robust in color as the original copy

The red definitely is not as vibrant as the original copy