On Dec 23, 2008, at 11:47 AM, Paul wrote:
> With some Laserjets, it's easy to replace the rollers that usually > need replacing. Some of the older ones especially were a pain that > way. > The CX marking engine (Apple LaserWriter and LaserWriter Plus, also HP LaserJet and LaserJet Plus) requires almost completely disassembling the printer in order to change the rollers. Makes sense, as the CX marking engine was originally a photo-copier which was later converted to a laser printer. You DO have to separate the "clamshell" in order to get to the rollers, thereby removing the "upper case", and to get to the registration roller you have to completely disassemble the "lower case". This is somewhat easier on the SX marking engine, but it is still not that easy. This flaw was resolved on the EX marking engine. > You also don't want to go too old (older than the various Laserjet 4 > models), because then you get ozone emissions from an earlier printing > technology. And I think the 4's were the first to have 600 dpi. And > front paper feed is more reliable than top. The "4 series" ... Pro 630, 16/660, LJ 4, LJ 4M ... were the first OPC (organic photoconductor) drum machines to offer 600 dpi, provided enough RAM was installed, otherwise these were limited to 300 dpi. The first 600 dpi printers were the selenium-drummed printers from Agfa, I believe, and which were sold as low-cost imagesetters. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
