Xerox Corp expects double-digit earnings growth in 1997 and beyond from new products and cost controls, it said, because its market is growing at more than 10% a year and it says it has a load of superior products and technology. It also says it is focusing on productivity-driven cost controls. It will release new digital black-and-white copiers in mid-April which it says will be easily upgradable to act as high-speed, robust printers on networks. The approach builds on its DocuTech Production Publishing strategy of selling stand-alone products and then subsequently upgrading them to the network. Xerox now does $1.8bn a year in this business, driven by its DocuTech family of products.