Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site uw-beaver Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!harpo!decvax!tektronix!uw-beaver!laser-lovers From: laser-lovers@uw-beaver Newsgroups: fa.laser-lovers Subject: dangerous lie in LaserJet service manual Message-ID: <135@uw-beaver> Date: Sun, 9-Dec-84 02:25:42 EST Article-I.D.: uw-beave.135 Posted: Sun Dec 9 02:25:42 1984 Date-Received: Mon, 10-Dec-84 03:25:53 EST Sender: daemon@uw-beaver Organization: U of Washington Computer Science Lines: 21 From: ihnp4!utzoo!henry@uw-beaver.arpa >From section 3-3 of the service manual for the HP LaserJet: Ozone Filter One of the by-products of a corona discharge is the generation of ozone. Ozone is a harmless form of oxygen which sometimes generates a pungent odor. To remove the ozone generated by the corona assemblies the printer uses a charcoal absorbtion filter [located in the printer proper, not in the cartridge]. "Harmless"?!??!? Somebody's been sniffing too much ozone! Ozone is **NOT** harmless; it is poisonous. I find it a bit unsettling that the ozone filter in the LaserJet (and hence in the Canon engine in general?) is not mentioned anywhere as something that should be replaced from time to time. Does anybody know how long such a thing would last before being in need of replacement? Henry Spencer @ U of Toronto Zoology {allegra,ihnp4,linus,decvax}!utzoo!henry