Abstract: A sheet processing apparatus includes: a folding unit that folds a sheet bundle; a pressing unit that presses a fold part of the sheet bundle, which has been folded by the folding unit, in a thickness direction of the sheet bundle to enhance folding of the fold part; and a moving unit that advances and returns the pressing unit in a width direction of the sheet bundle. The pressing unit starts pressing from a predetermined position in the width direction of the sheet bundle during advancing movement, and releases pressing after going past one end of the sheet bundle. The pressing unit starts pressing from the predetermined position during return movement and goes past the other end of the sheet bundle.

Abstract: An imaging device includes a plurality of light-receiving units configured to perform photoelectric conversion for different colors, respectively, each light light-receiving unit including a plurality of pixels; a plurality of output units provided for the light-receiving units, each output unit sequentially converting charges of the respective pixels produced by the photoelectric conversion into voltages and sequentially outputting the voltages; a switching unit configured to switch between signal paths so as to alternate output of the voltage between the output units in accordance with a switching signal input from an external device; and an electric-potential applying unit configured to apply an offset potential to the voltages output by the output units until a predetermined time has elapsed since switching between the signal paths by the switching unit.