HP recently announced plans to release Windows 7-compatible drivers for some of its printers. Unfortunately, some models won’t be supported on the new operating system.

For example, an HP support forum has been filled with angry comments about the apparent decision not to update drivers for the LaserJet 3600n, a color workgroup laser printer. That model was introduced three years ago and discontinued last year. There are lots of angry users who now must choose between doing without Windows 7 or forking out for a new color laser printer.

For example, one aggrieved manager wrote:

“This is unbelievable! We purchased multiple 3600n printers just barely a year ago (September, 2008). We have made the decision to upgrade our office computers to Windows 7 (from Vista) and now we find out that our practically still new printers are not compatible.”

Another user warned: “If HP does not support these printers in Windows 7 they will be the last HP printers I purchase.”

The company has provided a list of what devices have drivers available or will soon. If a printer’s not listed, HP says it won’t offer support for Windows 7. They are facing a growing number of angry customers.

Problems have hit other companies as well. Lexmark and Xerox have also put out lists of which products they will or won’t support with Windows 7.