HAVE BEEN ABLE TO PRODUCE GOOD CAMERA-READY COPY ON HP4000 UNTIL TRYING GRADIENTS AND SCREENS FOR 4 COLOR PROCESS. AM I ASKING TOO MUCH OF THIS PRINTER? DOES HP HAVE A LASER PRODUCT WHICH WILL PRODUCE BLACK & WHITE COPIES AT ABOVE 1200 DPI? PLEASE ADVISE IF SOME ONE HAS GRAPHICS/COMMERCIAL PRINTING EXPERIENCE. PS-CAN'T AFFORD IMAGESETTER AT THIS TIME.