Printer
Case study : Hewlett Packard LaserJet 4000

• Configurations: HP LaserJet 4000
  4000: 4MB RAM, one 500-sheet tray
  4000 N: 8MB RAM, HP JetDirect print server card, one 500-sheet tray
  4000 T: 4MB RAM, two 250-sheet tray
  4000 TN: 8MB RAM, HP JetDirect print server card, two 250-sheet trays
• Speed and throughput
  • Instant-on fuser prints first page in 12 seconds
  • A4 at 16 pages per minute
  • 100MHz RISC processor
• Resolution
  • FastRes 1200 for fast, high quality 1200 dpi image printing
  • ProRes 1200 for best quality
  • Up to 220 levels of grey
  • Precision toner to sharpen the appearance of text and graphics
• Language & fonts
  • HP PCL 6
  • 110 fonts for MS-Windows
• Expansion
  • Up to 100MB

• For best results use good quality 75g/m2 paper.
• 60-199g/m² xerographic paper
• 0.099-0.114mm thickness transparencies
• 0.127-0.178mm thickness labels
• 75-105g/m² envelopes

Paper Guidelines

Do not use

• paper with cuts, nicks, tears, spots, loose particles, dust, wrinkles, voids and curled or bent edges.
• letterhead paper printed with  low temperature inks
• Raised letterhead
• Coloured or pre-printed paper that use inks that will not withstand the printers temperature (205^oC for 0.1 sec)

Ozone emissions

• The printer uses charging rollers in the toner cartridge and in the print engine, rather than high voltage corona wires in the electrophotographic process, so generate no measurable ozone gas (O₃)

EPA Energy Star Computers Award

• Drops from 330 W when printing to as little as 16 W while in low-power (PowerSave) mode.

Environmental Specifications

• Temperature
  • Operating 10^o to 32^o C
• Relative Humidity
  • Operating 20% to 80%
• Location requirements
  • Sturdy level placement
  • Space allowance around teh printer
  • Well ventilated room
  • No exposure to direct sunlight or chemicals, including ammonia-based cleaning solutions
  • Adequate power supply
  • A stable environment - no abrupt temperature or humidity changes.