With nothing to lose I did a Google search for clogged printer IP3000 and found two sites that had step-by-step instructions on how to take apart the head and clean it. I followed all of the steps and then put the printer back together. When we did a test I was happily surprised that the printer was still working. I didn't totally dry out the head assembly and we can see wet spots on the paper when it prints, but, I figure if I print out 10-15 pages of images that it should clear up. Total time to take apart the printer, clean it and re-assemble was 30-45 minutes. I would recommend you use disposable plastic gloves as it is a somewhat messy process.
The only thing I could think that caused the print head to clog up was I used a generic black cartridge in the spring. After this I will be using Canon cartridges only. Right now I am happy that we didn't have to go out and buy a new printer and my wife thinks I am a genius on cleaning the printer without breaking anything.
The printer is working, but, the photo quality is not working properly. It appears that I didn't completely clean out the alcohol from the portion that prints black. I don't know if it will ever clean up, but, the black is splotchy and smears when printing. We don't have a problem if we don't use photo paper. I will probably keep the printer for normal jobs, but, I will probably have to get my wife a new printer so that she can print off her photos. Lesson here is to completely follow all directions and to thoroughly clean up before putting the parts back together.