But it sounds as though you are sensitive to whatever concentration of chemicals the printer is emitting. So don't back down. Direct your boss to information published by NIOSH and the Occupational Safety and Health Administration, get checked by a doctor, and keep (politely) making a stink until this is resolved. You might want to try enlisting the gripers in your cause. When they confront you, say: "I've asked about moving me away or moving the printer closer to you, which would solve both our problems. But I'm being told that's not possible. You'll have to ask [whoever can get this fixed] about it."
With luck, the company will buy them a low-emission printer. Then, they can turn to griping about learning to use it.
Karla L. Miller writes an advice column on navigating the modern workplace. Each week she will answer one or two questions from readers. Miller has written for and edited tax publications for 16 years, most recently for the accounting firm KPMG's Washington National Tax office.