Cracking open Hewlett Packard's IIP, the original personal LaserJet printer

Cracking open Hewlett Packard's IIP, the original personal LaserJet printer

Summary: The Hewlett Packard LaserJet IIP popularized the desktop personal laser printer. TechRepublic cracks it open to see what made the IIP tick.

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  • Disassembling the IIP from the top down reveals the DC controller, next.

    Photo by: Erik Eckel / TechRepublic.com
  • The DC controller assembly PCB sits beneath the video controller board (now removed in this image). Here you see the DC controller board in a side view of the IIP.

    Photo by: Erik Eckel / TechRepublic.com
  • In this view of the DC controller, you can just make out the cover (look for the orange sticker with black lettering) of the unit's scanner motor.

    Photo by: Erik Eckel / TechRepublic.com

Topics: Hewlett-Packard, CXO, Hardware, Legal, Printers

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5 comments
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  • RE: Cracking open Hewlett Packard's IIP, the original personal LaserJet printer

    I remember having one of these; nice printer. you could get a 3rd party PostScript cartridge for it IIRC.
    mcgonegal
  • Transfer roller

    The part you labeled a fuser roller, sequence no. 10, is actually the transfer roller. Paper runs between it and the drum in the toner cartridge, and a strong charge through the conductive foam rubber of the transfer roller pulls toner image off the drum and onto the paper between them.
    kidtree
  • Canon parts

    On sequence no. 18, you point out that the main drive motor is made by Canon. In fact, the entire print engine is from Canon, as with most HP LaserJets. HP adds their own controlling electronics and operation panel, but the guts are pure Canon. The label on the motor includes a part number, RH7-1094. That's the alpha-numeric pattern of Canon parts, and HP also uses those numbers for those parts they don't specifically design for their own machines.
    kidtree
  • Don't Laugh

    Hey, I've still got a IIp, and it's still working fine.

    And I've got the lower tray assembly and maxxed out memory.
    rag@...
    • RE: Cracking open Hewlett Packard's IIP, the original personal LaserJet printer

      @rag@... My school had one of these locked away in a closet, and I wanted to bring it home, but they threw it away before I could get it. Oh well, at least I managed to get an LJ4. They just don't make them like they used to.
      thehumanyawn