Premium 884922 (Type 4500A) Black Copier Cartridge fully compatible with the Gestetner DSM 735E,745E, Lanier LD-040,LD-050,LD-335,LD-345, Ricoh MP3500,MP4000,MP4500,MP5000 Series, Savin 8035E,8045E,9040,9050. The use of compatible supplies does not void your printer warranty. (884922, Type 4500A, Type4500A)