Abstract: A one-way clutch including: a driving force input member; a driving force output member; and a driving force transmitting member, wherein, when the driving force input member performs forward rotation, the second engaging part performs forward rotation in a state of being engaged with the first engaging part, so as to connect the first ratchet engaging part and the second ratchet engaging part, in order to make the driving force output member perform forward rotation, wherein, when the driving force input member performs reverse rotation, the second engaging part performs reverse rotation in a state of being engaged with the first engaging part, so as to make the driving force transmitting member and the first ratchet engaging part perform reverse rotation so that the first ratchet engaging part is separated from the second ratchet engaging part, in order not to make the driving force output member perform reverse rotation.

Abstract: A one-way clutch including: a driving force input member; a driving force output member; and a driving force transmitting member, wherein, when the driving force input member performs forward rotation, the second engaging part performs forward rotation in a state of being engaged with the first engaging part, so as to connect the first ratchet engaging part and the second ratchet engaging part, in order to make the driving force output member perform forward rotation, wherein, when the driving force input member performs reverse rotation, the second engaging part performs reverse rotation in a state of being engaged with the first engaging part, so as to make the driving force transmitting member and the first ratchet engaging part perform reverse rotation so that the first ratchet engaging part is separated from the second ratchet engaging part, in order not to make the driving force output member perform reverse rotation.

Abstract: A printing apparatus includes a first roller pair disposed upstream of a print head; a second roller pair disposed downstream of the print head in the conveyance direction; and a controller configured to control the print head so as to perform an ejection operation at an ejection timing according to the rotation detected by a rotation detecting unit when the first roller pair conveys the print medium at a first conveyance speed before the second roller pair holds the print medium and when the second roller pair conveys the print medium at a second conveyance speed while holding the print medium and the first roller pair idly rotates by a one-way clutch.

Abstract: A printing apparatus includes: a first roller pair disposed upstream of a print head; a second roller pair disposed downstream of the print head in the conveyance direction; and the printing apparatus configured to control the print head so as to perform ejection operation at an ejection timing according to the rotation detected by the first rotation detecting unit when the first roller pair conveys the print medium at the first conveyance speed before the second roller pair holds the print medium and when the second roller pair conveys the print medium at the second conveyance speed while holding the print medium whereas the first roller pair idly rotates by the one-way clutch.

Abstract: A feeding/separation apparatus includes a feeding mechanism configured to feed a recording medium stacked on a sheet feeding unit, and a separation mechanism having a feeding member driven in a sheet feeding direction and a separation member driven in a direction opposite to the sheet feeding direction, a drawing member driven in the sheet feeding direction is disposed downstream of a nip portion formed by the separation member, and wherein the distance between the nip portion by the drawing member and the nip portion by the separation member in the sheet feeding direction is x/2 or less, where x denotes a minimum length of the recording medium.