Kodak announced in a Securities and Exchange Commission (SEC) filing on Monday that there was “substantial doubt” about the company’s ability to stay in business. The company plans to pay off some of its debt and preferred stock using money it expects to get back from its pension plan. The company is hoping to change the terms, push out due dates or refinance its remaining debt and preferred stock obligations, which are payments promised to holders of special shares that usually get paid before regular shareholders. Still, since these plans depend on things outside Kodak’s control, they aren’t considered reliable...