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42 Functional Overview
C4224-90962
Basic functions
This chapter presents a functional overview of the HP LaserJet 1100 Printer’s processes.
The following systems are discussed:
• engine controller unit (ECU) system/power system
• formatter system
• image formation system
• paper feed system (printer) and document feed system (optional document scanner)
• document scanner system (optional)
• optical system (located in the optional document scanner)
The HP LaserJet 1100 Printer consists of the printer and the document scanner
(HP LaserJet 1100A Printer-Copier-Scanner). Operation sequences of the printer are
controlled by the ECU. Operation sequences of the document scanner are controlled by the
video controller.
Figure 3-1 Basic configuration