Canon imagePROGRAF iPF5000 Series Service Manual

Also see for iPF5000 - imagePROGRAF Color Inkjet Printer: Troubleshooting guide Troubleshooting guide Brochure & specs Brochure Information sheet

Contents

Canon imagePROGRAF iPF5000 Series Service Manual Manual pdf 49 page image

Chapter 22-9F-2-72.3.2.3 Carriage Unit2.3.2.3.1 Functions of Carriage Unit0013-4306a) Printhead mounting functionThe carriage mechanically locks the printhead and is connected to the printhead via the terminals on the carriage PCB.b) Control functionThe carriage incorporates a carriage PCB that relays the signal from the main controller, a linear encoder that generates a print timing signal based on the detectedcarriage position, and a multi sensor that detects the media width and skewing to adjust the registration and height.The carriage PCB and main controller PCB are connected with a flexible cable.c) Carriage drive functionThe carriage motor moves the carriage back and forth on the platen via the carriage belt.d) Printhead maintenance functionThe printer performs the printhead cleaning operation such as printhead wiping and suction at the home position of the carriage.The cleaning operation accompanied by ink suction is performed only at the left cap.e) Nozzle check functionThe printer detects a non-discharging nozzle using the head management sensor attached to the maintenance jet tray by discharging ink with the carriage stoppedat the maintenance jet tray.f) Media thickness adjustment functionIf the gap between the printhead face and the media increases due to the difference in media thickness, cockling, curling, and so on, more ink mist is generated. Inreverse, if the gap decreases, the head can touch the media surface more frequently.To maintain the proper gap, the remote lifter is driven to adjust the head height automatically according to the selected media type, media supply method, printingconditions (borderless/priority print type), environmental conditions (temperature/humidity), and the result of measurement by the multi sensor.The relationship between media types and head heights (from the platen) is summarized in the table below. Note that the head height is adjusted with priority givento the media gap measured by the multi sensor.T-2-3Head height (mm) Media type (Value in parentheses:mm)1.4 Glossy paper(0.2),plain paper(line drawing)(0.1)1.8 Plain paper(0.1)2 Coated paper(0.5)Valve camValve motorInk supply valveValve open/closed detection sensorLinkageLinkage