HP 72SI, 98SI manual Index Description, Parts Overview

Index Description

1Encoder strip — allows precise positioning of the print- head carriage across the length of the platen.

2Main carriage drive belt — moves the carriage across the length of the platen.

Transport chain (not shown) — supports the ink sup- ply tubes that carry ink from the ink supplies to the printheads, power, and electrical signal cables.

3Platen — supports the media under the printheads during printing, warms the media in the print zone, includes vacuum to hold the media against the platen.

4Printhead carriage — carries the printheads, digital imaging sensor, and photodiode across the length of the platen.

Digital image sensor (on carriage, not shown) — detects the location of printed pixels for precise align- ment of the printheads, enables the automatic replace- ment of poorly-printing ink jets with substitute jets.

Photodiode (on carriage, not shown) — enables the creation of color transforms without an external spec- trophotometer (requires print server support), and the linearization of existing transforms.

5Spittoons — located at both ends of the platen, receives ink “spits” that keep the printheads at their optimal performance.

6AutoCleanTM Service station — catches purged ink from the printheads, wipes the printheads with clean- ing solvent. Wipers are automatically cleaned and cleaning solvent applied before wiping. Ink is periodi- cally spit when idle to keep the inkjets working.

7Ready-for-Refill LEDs — an LED illuminates when its corresponding profiler indicates that the ink box should be replaced with a full one.

8Control panel — displays messages and allows control of certain printer operations. Includes a contrast adjust- ment lever and audio feedback.

9Electronics module — contains the printer’s power supply and control electronics.

10Postheater — helps to dry the output prior to the takeup. Incorporates turnbuckles that can be adjusted to straighten the media path.

Parts Overview 1-11