HP LaserJet M9040/M9050 Service Manual - Page 144

SCB. After the scanning process is completed by the SCB, the scanned data is sent to the CP. The CP processes the image and sends the image data to the formatter. Figure 5-25 Copy processor Scanning process control signals The CP controls the following scanning process control signals: ● ADF unit and flatbed unit operation directs the SCB about the following: ◦ When to scan ◦ How to scan ◦ When to activate motors ◦ When to turn the scanning lamps on and off ● Image processing ◦ Color alignment ◦ Resolution conversion ◦ Image sharpening ◦ Moire removal ◦ Image scaling ◦ Shifting of data strips (reconstructing separately processed image data before CP communication to the formatter) ◦ RGB conversion for CP communication ◦ CP communication to the formatter using one of the following formats: • HRB (fastpath) communication with the hard drive on the formatter • PCL-XL (n-up, rotation, book mode) communication with the hard drive on the formatter 126 Chapter 5 Theory of operation ENWW