Scanned data flow The HP LaserJet 9000mfp has a scan engine with 600 by 600 ppi (pixels per inch) resolution. It has three channels (red, blue, and green) with 10 bits per channel, equalling a 30-bit scan engine. Analog data is captured by the CCD driver circuit and converted to digital data on the analog processor board. Digital data is then sent through the three channels to the CPB. The CPB coverts the digital data into one of the three final output types: HRB (hardware ready bits): most copy jobs are processed at the CPB and sent to the print engine as HRB. PCL-XL:
if rotation, book copying, or n-up is chosen in the job, the CPB passes PCL-XL data to the print engine and the formatter finishes the processing. JPEG (lossless): compresses image data from the CPB to the formatter when processing a digital send job. The formatter then processes the data into the desired file type (TIFF, MTIFF, JPEG, or PDF). Figure 59. Scanned data flow C8523-90921 Scanned data flow 93