Epson 2200 Service Manual - Page 44

EPSON Stylus PHOTO 2100/2200 Revision B However, the white level value is not used in the PW sensor-related firmware processing. The white level value is used to check the sensor deterioration condition during servicing or like. If the measurement value of the white level is close to that of the PW detection level, it means that the sensor is dirty or deteriorated. 2.2.2 Print Mode 2.2.2.1 Printhead Specifications The Printhead of this product is a G-Mach head. The following shows the arrangement of the nozzles and the color arrangement of each nozzle line when they are viewed from behind. 2.258mm 2.258mm 2.258mm (32/360inch) (32/360inch) (32/360inch) 7.902mm 7.902mm 7.902mm (112/360inch) (112/360inch) (112/360inch) Line A Line B Line C Line D Line E Line F Line G Paper feeding direction 0.076mm (1/360inch) 0.014mm (1/180inch) OPERATING PRINCIPLES 30.48mm 38.44mm Carriage moving direction Figure 2-3. Nozzle Rear View Table 2-3. Relationships between Nozzle Lines and Color Arrangement Line Ink A Photo-black or Matte-black B Light-black or Matte-black C Cyan D Light cyan E Magenta F Light magenta G Yellow Printer Mechanism 44