SCIENCE / TECHNOLOGY : 3 1/2-Pound Printer to Go With Laptop Computer is $350

What can you do with a 3 1/2-pound printer, billed as the world’s smallest?

Plenty, if you’re a busy executive or traveling salesman who hauls around a laptop computer. You could, for example, print out purchase orders on the spot for customers or get copies of computer-written memos that could then be faxed back to the home office.

Computer Products Plus, a Huntington Beach firm, will soon begin distributing its Road Warrior WsP-200 printer for laptop computers. The printer’s dimensions are 11 1/2 inches by 1 1/8 inches by 6 3/4 inches, or small enough to fit in a briefcase.

The tiny printer, manufactured in Japan for Computer Products Plus, prints on fax machine thermal paper and uses five C batteries. It sells for $349.95.

The Road Warrior’s nearest competitor is Eastman Kodak Co.’s Diconix 150, which sells for $519 and weighs four pounds.