Canon AJ1 Service Manual

Contents

Canon AJ1 Service Manual Manual pdf 21 page image

Lifter ControlWhen the cassette is set, the Cassette 2 Lifter Motor rotates to raise the Lifter Plate. Then, the paper is raised to the position tobe picked up.Registration ControlIt is a control to align the image on the ITB with the paper at a specified timing.Based on the leading edge detection by the Pre-Registration Sensor, the following 2 controls are used:• Non-stop Registration Control• Stop Registration ControlBasically, non-stop registration control is used. However, if the Pre-Registration Sensor is turned ON later than the period of timecorresponding to the maximum correctable distance of the non-stop registration control, it is not possible to align the image onthe ITB with the paper at the specified timing, and a jam code is generated. (Jam code: 0A90)On the other hand, if the Pre-Registration Sensor is turned ON earlier than the period of time corresponding to the minimumcorrectable distance of the non-stop registration control, the image on the ITB is aligned with the paper at the specified timing bythe stop registration control.Sensor ON(early) Sensor ON(late)Jam occursPaper feedSensordetectiontimingNon-stop Registration ControlDecelerated AcceleratedStop RegistrationControlSensor ON(ideal)■ Non-stop Registration ControlIt is a control to align paper and image on the ITB at a specified timing by increasing or decreasing the paper feed speed. Sincepaper is not stopped at the registration position, paper interval can be shortened and productivity can be improved.■ Stop Registration ControlIt is a control to stop paper at the registration position, align the image on the ITB with the paper at a specified timing, and thenresume paper feed.Stop registration control stops the Pre-registration Roller. Paper fed by the Pre-registration Roller after being picked up from thecassette generates an arch due to being pushed against the Registration Roller which has been stopped. In order to align theimage on the ITB with the paper at a specified timing, this control stops paper feed with the paper arched, aligns the image onthe ITB with the paper at the specified timing, and then resumes paper feed.2. Technical Explanation16