Manufacturers of inkjet printers earn most of their profits from the sale of ink cartridges rather than from the sale of the printers. The PRQ Company's profits have declined in recent years because other manufacturers are selling ink cartridges compatible with PRQ printers at a lower price than PRQ can match. PRQ is responding by designing a printer that will only accept a new specially designed PRQ cartridge, which will sell for the same price as its current ink cartridges. The company projects
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