HP Laserjet 4Si and 4SiMX

The LaserJet 4 family is not a model of printer, there are 4 engine variants - the "4", "4P", "4V" and "4Si" which are all quite distinctive. So the LaserJet 4 is not so much a model as a generation of "laserjet" - and particularly of the PCL and PostScript languages and the computer system drivers.

The HP 4Si was HP's heavy-duty model in the LJ4 family. It is based on the Canon "NX" engine with a output of 17ppm letter (16ppm A4). The engine is quite like the EX engine but "bigger boned" with room for two 500 sheet trays and easy incorporation of a duplex unit.

The 4Si MX was a postscript model aimed at graphics artists and Apple Mac users.

• LaserJet 4SI - C2010A - PCL
• LaserJet 4SI MX - C2011A - PCL and PostScript version

The 4Si was introduced in April 1993 so its a very old design. Physically it's a bit of a monster so it is now rare, although given enough memory it can still do a good job.

However to the best of my knowledge I'm the last user (as at 2009)

Control:

LCD control panel with 2 lines and a set of 8 buttons for menu. The control panel is similar to other "4" series. The prompts and key pushes are not quite intuitive but the printer can print out a menu to help.

Duty Cycle:

75,000 pages per month

Print Speed:

16 ppm A4

Print Resolution:

600x600 dpi

Paper Handling:

A4 and letter paper path. Ships with 2 x 500 sheet trays.

Tray 1:500 Sheets Tray

Tray 2:500 Sheets Tray

Face Down:

Default output is to a face-down tray on top of the printer.

Duplex:

Duplex can be fitted within (Many of these printers have it)

Memory:

2MB, Expandable to 64MB

Interface:

Parallel

Network:

2 x MIO Slots

Network Protocols:

Support depends on the MIO card installed. There were options for token ring and ethernet.

System Compatability:

Vitually all systems can use the 4SI MX with it's PostScript support. It works with Linux - although it can be very slow printing things like Google earth.

Consumables:

Toner cartridge for 4Si with 8,000 page yield at 5% cover. - 92291A

Maintenance Kit:

Maintenance kit - C2062-67901

Maintenance kit 220V - C2087-67902

Spares:

Delivery Roller - RB1-0531

Roller - RB1-0559

Pickup roller - RF5-0041

Transfer roller - RG5-0141