I just bought a 4M Plus from someone. Having problems printing my 3 dimensional logo on my Quick Books invoices. It came with PostScript 2. I have added 48 megs of memor greatful fory for a total of 50 megs. The logo is a tiff file. It prints with some lines broken and the edges of the image are not clear and sharp. It's a high quality image and prints fine on my regular inkjet printer. I have tried adjusting print density and resolution enhancement. Have tried printing at both 300 & 600 dpi. No improvement.Text prints beautifully. Will be very grateful for any help on this. Have downloaded latest drivers from HP. Any ideas?