The suit alleges that HP's drives don't work right, but the firm says it has been dealing with the problem for months.
The suit was filed in California on behalf of two customers who purchased HP's 4020I and 6020I CD-R drives, said their attorney, Jonathan Shub.
CD-R drives can record data to a CD-ROM disc once, unlike CD-RW drives, which can record, erase, and re-record data. The suit alleges that the drives stop recording before the CD has reached full capacity because of a faulty spring inside the drive. The problem usually occurs at the same point in the recording process, and information already burned onto the CD may be lost.
HP says the suit relates to an old problem that is being handled on a case-by case bases.
"The 'write append error' we see with the 4020, what we've done to alleviate the error is to replace one spring with two springs," in later versions, said an HP spokesperson who would not comment on the merits of the lawsuit.
"If that is the issue, then our customer support people are taking care of it, and [have been] dealing with it for 6 months."
These HP drives are the subject of fierce criticism on Internet newsgroups and Web sites, drawing complaints about the so-called "write append errors."
Similar problems have also been reported with drives from Philips, who reportedly is one of HP's manufacturers.
"This should go forward on behalf of customers of HP," Shub said.