HP LaserJet 5 (1996)

What the HP LaserJet 5 was

The HP LaserJet 5 was a desktop monochrome laser printer that Hewlett-Packard introduced in 1996 under the base product number C3916A. It printed on cut-sheet paper at 12 pages per minute and, according to HP's own user manual, offered "true 600-dpi printing with Resolution Enhancement technology (REt), MicroFine toner, and 120 levels of gray." The line shipped in three principal variants: the base 5, the PostScript-equipped 5M, and the network-ready 5N. Wikipedia describes the LaserJet 5 as a group of monochrome laser printers produced in the mid-1990s as part of HP's long-running LaserJet series.

The Canon EX-II engine and 600-dpi output

The 12-page-per-minute LaserJet 5 was built on a Canon print engine; Wikipedia identifies it as the Canon EX-II, a laser electrophotographic mechanism. HP's manual documents the output as true 600 dots per inch enhanced by Resolution Enhancement technology (REt), which it says "adjusts the size and placement of each dot to smooth edges and curves," paired with MicroFine toner to sharpen text and graphics. The manual also credits the engine with 120 levels of gray for smoother halftones and markets it as using "Accelerated Printing Technologies" for throughput.

PCL 6 and optional PostScript

A defining feature of the LaserJet 5 generation was its command language. HP's manual states the printer "comes with the PCL 6 printer language, which is compatible with all previous HP LaserJet printers," adding built-in Intellifont and TrueType type scaling, built-in HP-GL/2 vector graphics, and advanced imaging such as reverse (white-on-black) printing. Wikipedia notes that PCL 6 "gave noticeably faster output - especially with complex, graphics-intensive documents." The base 5 could accept optional Adobe PostScript Level 2 on a SIMM, while the companion LaserJet 5M shipped with PostScript Level 2 as standard; when multiple languages were installed, the printer could automatically detect and switch between them per job.

How a page was rendered

Like other laser printers, the LaserJet 5 formed each page by sweeping a modulated laser beam across a rotating photoconductor drum with a laser scanner unit, developing the resulting latent image with toner and fusing it to paper. Incoming jobs, described in PCL 6 or PostScript, were converted into the dot pattern the laser writes by a raster image processor. HP's Memory Enhancement technology (MEt) compressed page data so that, per the manual, most documents could print using the printer's standard amount of memory.

Connectivity: parallel, serial, infrared, and networking

HP's manual lists a comparatively rich set of ports for the period. The base printer came with an IEEE 1284 parallel interface for high-speed two-way communication, a standard RS-232 serial port, and - notably - a serial infrared port for wireless printing with an optional HP IR adapter. A Modular I/O (MIO) slot accepted optional HP JetDirect network cards, and the printer automatically switched I/O among all installed ports so several computers could connect at once. The LaserJet 5N was the network-ready model, while the 5M included an HP JetDirect card supporting LocalTalk and Ethernet networks.

The 5, 5M, and 5N variants

The LaserJet 5 line comprised three main models. HP's manual documents the base 5 with 4 MB of memory (expandable to 66 MB across four SIMM slots) and 45 built-in scalable TrueType fonts. The 5M added, in HP's words, "more memory, a built-in PostScript language SIMM, and an HP JetDirect card," shipping with 6 MB (expandable to 52 MB) and Adobe PostScript Level 2 drivers for Macintosh and Windows. The 5N was the networked variant. These belong to a broader LaserJet 5 family that Wikipedia also lists as including the personal 5P and 5L and the high-volume 5Si, each built on a different Canon engine.

Place in the LaserJet line

The 12-ppm LaserJet 5 succeeded the 600-dpi LaserJet 4 of 1992 and carried forward HP's PCL command language and Canon-engine strategy. Wikipedia dates the 5/5N/5M to April 1996; the surrounding LaserJet 5 family had already begun appearing in 1995 with the personal 5P (March 1995), the low-cost 5L (September 1995), and the workgroup 5Si (November 1995). It brought HP's new PCL 6 language to the desktop LaserJet line, and PCL 6 carried into subsequent HP generations.

Reference scope

This page records only facts traceable to authoritative sources - HP's own 1996 user manual and archival histories - and omits any specification that cannot be sourced rather than estimating it. Where sources disagreed, HP's manual was preferred: it gives the base LaserJet 5's standard memory as 4 MB (expandable to 66 MB). A processor specification sometimes quoted by resellers could not be confirmed against HP documentation and is therefore omitted. This is not a buying guide and quotes no current pricing or availability; the printer has long been discontinued and is supported only as a legacy product.