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The HP 8100: Faster Printers Need Faster Fusers
by Bruce Gamache · Color Image · January 1, 1999 - page(s): 92-93
The new HP 8100 printer is a Canon-based engine rated at 32ppm. To reach this higher speed, the original WX engine for the 5Si, as well as the fusing assembly, have been tweaked. The Lexmark 3450, which is rated at 34 ppm, also uses a version of the WX engine. For this article I will use the HP printer models as my reference.To better understand the changes, we first need to look at the differences between the Canon LBP-WX (HP 5Si/8000) and the Canon LBP-WX+ (HP 8100). The 5Si is a 24 ppm printer in the text mode. The 8000 incorporates a faster processor, which increased the print speed to a true 24 ppm in a network configuration. These two printers are the same basic print engines. The 8100 is a 32 ppm printer and is very similar in operation to the 5Si/8000. However, few of the parts are interchangeable. The same changes were made when the 8 ppm HP4 was modified to become the 12 ppm HP4+/5.
Just as the HP4 fuser will not fit into the HP4+/5, the 5Si/8000 fuser will not fit into the 8100. Photo 1 shows both fusers. They appear to be very similar, but less than 25% of the parts are the same. As you can see in Photo 1, the 8100 fuser on the right has only one electrical connection where the 5Si/8000 shown on the left has two plugs. This prevents accidental installation of the incorrect fuser.
Fig. 1
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