Why is it not printing the last few lines of a page?

Lately, when my printer prints a document, doc or pdf in Greek, is lights up the yellow "error" led. When the operation button is pressed, it prints 4/5ths of each page ok, prints the rest of the same page in unreadable format, and then prints a second page mostly blank and at the bottom the few lines that could not be printed on the first page.

An English document I tried to print from the 50 pages, it had the same problem on 1 page with a big table.A second page with a similar table was printed ok.It drives me crazy.

any help?