Hi, thanks for your reply, here are some more details for you:
We have six HP LaserJet 100 Color MFP M175nw's throughout the school. Mostly they have about 4 or 5 either laptops or pc's connected to them through a wired ethernet. They are generally a mixture of Windows Xp and Window 7 machines, apart from one in the school office which is running with brand new Windows 7 machines only and printing through a different server. Three of the printers randomly get the error : unsupported personality printing at the top of lots of blank pages, this can happen in the middle of a print. Turning the printer off and on usually clears the error. The printers are running the most up to date firmware. Originally the printers were installed with the driver that they came with, but when we started getting the error we downloaded the universal printer driver for PCL6 from your website, given that the error is a personality error. However, this is not the only error occurs, sometimes the printer shows invalid driver on the control panel. And one of the printers will randomly print 'alien-like' characters at the top of lots of pages. All new machines that have been added to the network have the universal driver. Some machines need to print to more than one printer so may have other drivers installed. The problem seems to happen more often when there is a combination of different types of machines printing to the printer. For example, where all the machines are the same in the school office, this printer has never had the error, but has also only ever had the universal driver installed, and prints through a different server. Another printer also only has two machines printing to it (a Windows 7 and a Windows XP) and prints through the server where everyone else has the problem) and does not have the problem. It is wasting a lot of paper! The error can occur when printing a very simple document from Word, and in the middle of a document. When I print off a config page it lists the personalities installed on the printer, all the printers have the same personalities - this doesn't seem to include PCL 5, so I did download the universal driver for this too, but it didn't seem to install on the printer, and I'm not quite certain how the personalities get onto the printer - is it when I installed on one of the connected laptops?
I tried to invoke our warranties, but can't seem to find the required product numbers and serial numbers on the printers, the numbers that I found on the labels just don't seem to work. Any help or advice that you can give would be greatly appreciated. Also I forgot to mention that re-installing the driver on any laptop does seem to clear the error for a couple of days. Uninstalling and re-installing on every machine really isn't practical in this environment! thanks Tammy
