Leased a Ricoh Pro C651EX several years ago. Runs #10, #11, #12 Regular, #9 Window with Digital Film, #9 Regular, A2 thru A8, 6x9 Booklet. No wrinkles, must run with all flaps open and print side up. Has dedicated envelope tray. Loads about 50 to 65 envelopes. Speed varies depending on size of envelope. I have run 10M number 9 regular envelopes in about 6 hours. We run variable data on all envelopes including name and address info. If set up correctly has very few jams. May lose 25 envelopes per 5M printed. Great machine! Questions call Paul 508-778-7122 or [email protected].
