Canon BJC-8500 Service Manual

Also see for BJC-8500: User manual

Contents

2.2.1 P-POP (Plain Paper Optimized Printing) modeThis printer ejects ink optimizer from Black BJ cartridge BC-80 only when plainpaper, envelope, or thick paper modes (except when print quality is set to high speed)are selected on the printer driver. During color printing, the printer ejects ink on theink optimizer. Waterproofing properties are improved during black printing, either byejecting black ink, then ink optimizer and then black ink or by ejecting black ink andthen ink optimizer.2.2.2 Draft mode (Print Quality: High Speed)The draft mode is the fastest printing mode on this printer. In this mode, ink isprinted by one pass in the uni-directional mode (254 nozzles used) when color ink isprinted, and in one pass in the bi-directional mode (256 nozzles used) when onlyblack ink is used.In this mode, the amount of ink used is reduced with the ink ejection rate on thepaper at 50%. So, images are printed faint.2.2.3 Photo printing modeIn this printing mode, the Photo BJ cartridge BC-82 Photo containing lower densityink and Color BJ cartridge BC-81 can be used to print halftone and high-contrastareas with less graininess.Combining color ink and photo ink allows 17 gradations of expression. This achievesboth high-contrast rendering and subtle coloring in the midtones. Also, graininess isreduced in low-density areas.2.2.4 Carriage SpeedThe carriage speed varies due to printer driver image processing resolution4-11BJC-8500Part 4: Technical ReferenceColor InkInk OptimizerInk OptimizerBlack Ink Ink OptimizerBlack InkBlack InkPaper Surface Paper Surface Paper SurfaceFigure 4-10 Ink Layering with the Ink OptimizerPrinter driver image processing resolution (dpi)300 × 300 (print quality: draft)300 × 300 (other than the above)600 × 600 (print quality: standard (HS))600 × 600 (other than the above)Carriage speed (inch/sec)26.716.78.316.7TABLE 4-2 CARRIAGE SPEED