Abstract: An image forming apparatus includes a stacking portion including a lifting portion, a feeding member feeding a sheet stacked on the lifting portion to a conveyance passage, a position detector detecting movement of the sheet stacked on to a feedable position to the conveyance passage, a driver including a motor and performing the lifting operation of the lifting portion, a rotation detector detecting rotation of the motor, and a controller. The controller determines a factor that the position detector does not detect the movement of the sheet stacked on the lifting portion to the feedable position within a predetermined time based on a detection result of the rotation detector while controlling the driver to lift up the lifting portion.

Abstract: A method for producing a product capable of adsorbing mutagen involving providing a fiber-rich, vegetable material capable of adsorbing mutagen by separating fibers from a vegetable, boiling the fibers and then washing and dewatering the fibers, prior to treating the fibers to produce dehydrated, fiber-rich vegetable material in particulate form by subjecting the fiber-rich material to a dehydration technique which preferably involves co-drying the fibers with carrier materials, and an ingestible product including fiber-rich vegetable material made from cabbage, radish, bamboo sprout, onion, carrot, pimiento, spinach, soybean malt, and asparagus.