An image is created on a substrate capable of, or made capable of (e.g., coating with a thickener), accepting colorant. In one example, the image is printed onto the coated substrate using an inkjet printer. Porous material, for example, clothing or plaster, is treated with a dissolvent for dissolving the thickener. Contacting the treated porous material with the imaged substrate causes the thickener to dissolve. A chemical activator for activating the colorant may also be used (e.g., in the coating or by pretreatment). Under vacuum, the colorant of the image is drawn from the substrate to the porous material without using heat.