Canon DADF-P1 Service Manual

Also see for DADF-P1: Portable manual

Contents

Canon DADF-P1 Service Manual Manual pdf 28 page image

Chapter 22-6T-2-62.4 Document Pickup/Separation2.4.1 Basic Pickup Operation 0011-2263With an document placed on the document tray, pressing the print start key will picks up the document in the following manner.a. Pickup operationWhen the pickup motor (M2) turns in reverse direction, the pickup roller unit lowers to rotate the pickup rollers, thus feeding the document. The stopper rises inconjunction with the pickup roller unit. The separation sheet and pad are used to prevent multiple sheets from being fed together.F-2-9b. Formation of loopWhile the pickup motor (M2) is turning in the reverse direction, the document is fed against the registration roller that is stopped by the idling one-way clutch toform a loop, thus preventing the document from skewing.F-2-10c. FeedThe pickup motor (M2) and feed motor (M1) turns in the forward direction to raise the paper pickup roller unit, feeding the document to the read standby point withthe registration roller and read roller. When the document reaches the read standby point, the pickup motor (M2) and feed motor (M1) stops.F-2-11d. Stream readingWhen the leading edge of the document reaches the read standby point, an image leading edge signal is sent to the host machine to start stream reading. Streamreading is a scan mode in which the document is moved on the optical system's glass using the platen roller.The read image is stored in the memory of the host machine.Sensor nameDocument widthsensor 1Document widthsensor 2Document lengthsensor 1Document lengthsensor 2Size11 x 17 - ON ON ONLGL - OFF ON ONLTRR - OFF ON OFFLTR - ON OFF OFFSTMT - OFF OFF OFFPickup roller unitDocumentM2Pickup roller unitDocumentStopper Separation pad Separation sheetM2One-wayclutchOne-wayclutchRegistrationrollerLoop formation 1RegistrationrollerRead standby pointRead rollerM1 M2