HP has unveiled several new colour LaserJets for small offices, home offices and mid-sized businesses at the Macworld trade show. The company is showing one single-function and two multifunction models on the show floor.

The four-colour multifunction (MFP) models showcase a new 3.5-inch touchscreen display, with intuitive visual navigational controls. The touchscreen is large, responsive and much easier to operate than the navigation in previous models.

"The design has been streamlined so that these new printers are very easy to operate," said Sherri Harper, HP's LaserJet marketing expert. "What's more, these printers are all about mobility and printing on the go."

The HP LaserJet Pro 400 colour M451 is a single function model designed for businesses that want to create professional-looking colour documents, such as marketing materials. It prints up to 21 pages per minute in either black or colour, at 600 dpi.

The printer comes in three models. Automatic duplexing is available only on the M451dn (duplex/network) and M451dw (duplex/wireless) models. Built-in wireless is available only on the M451nw (network/wireless) and M451dw (duplex/wireless) models.

The company is also showing the multifunction LaserJet Pro 300 colour M375 and the LaserJet Pro 400 colour M475, which comes in duplex/network and duplex/wireless model. These models print, scan, copy and fax.

The M375 prints 19 pages per minute in black and colour. It can scan at 1200 dpi in monochrome and 600 dpi in colour, directly to a USB, email or networked folder. It can also produce up to 99 copies at 300 dpi. The MFP M475 is similar to the MFP 375, but faster. It prints up to 21 pages per minute in black or colour. It also includes standard duplexing.

All the new printers are web-connected and support Apple's AirPrint, HP ePrint and HP Wireless Direct. Thus, they allow users to print anywhere and from any Apple mobile device. All allow web-based administrative management via the company's Jetadmin software.

The HP LaserJet Pro 300 and 400 MFP series also includes support for HP business apps, which allow users to access and print web content directly using the touchscreen display.