Shock-jitter canceller

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The shock generated and the change in speed when the leading edge enters and the trailing edge exits the nip between the PTR [9] and paper transfer timing roller [7] may cause image quality problems where unwanted lines appear perpendicular to the paper feed direction (shock-jitter).

To ease the shock, the PTR unit is equipped with the "shock-jitter canceller" function, in which the PTR [9] moves up when the paper enters the nip and moves down when the paper exits the nip.