HP 4 plus ' 20 memory overflow ' ; HP 5L ' no enough memory'

["Jephe Wu" <jwu asiansources com>]

I have two Linux print server (Redhat 5.2,486/8MRAM/210MHD) running on my
LAN , every server is serving one department. the clients is using Windows
95/98 . one server is connected to HP 4 plus laser printer, another is
connected to HP 5L laser printer, when installing Linux server, I selected
HP 4/5/6 series laser printer. for clients, using hp 4 plus driver and hp 5l
driver for windows 95/98, but HP 4 plus often reported that '20 ,memory
overflow', and sometimes, on HP 5L clients screen display ' no enough
memory' . why?

Thanks