Printings And Printings Pdf - Abnormal Size


I write for a friend on Tiger 10.4.2. Recently, he encounters a
very strange problem with printings.
With his Deskjet 840C or towards pdf, when he wants to print 1 page or more, he obtains a considerable number of pages (200-300 pages - finally enormous ) And this happens starting from all his applications: Safari, Apercu, Mail,..)
Any solution?


( G3 576 RAM 10 Go upgraded from Mac OS 9.2.2)