HP Color LaserJet Pro M155a Single-Function A4 Color Laser Printer

The HP Color LaserJet Pro M155a is a single-function A4 colour laser printer — print only, with no scanning or copying — for shops, small offices and home desks that need clean colour documents quickly. Laser output does not smudge when a page is handled or when the air is damp, which is a real advantage over inkjet for anything that gets filed, signed or passed across a counter. It prints at up to 17 ppm in black and 17 ppm in colour, at resolutions up to 600 x 600 dpi, with 128MB of DDR memory and 128MB of NAND flash storage behind it. Paper handling is a 150-sheet input tray and a 100-sheet output bin, and connection is a single Hi-Speed USB 2.0 port, so it attaches directly to one computer rather than joining a network. The monthly duty cycle is rated up to 30,000 pages, and consumables are HP 215A toner cartridges, rated at around 1,050 pages for black and around 850 pages for each colour. It comes with a 1-year warranty, and keeping the original box makes any claim straightforward. This is the printer for a business turning out invoices, quotations, price lists, certificates and marketing sheets in colour every day at a predictable cost per page. Toner does not dry out between busy spells the way ink does, so an office that prints in bursts is not penalised, and the USB-only design keeps setup simple where there is no office network to join.