HP LaserJet Enterprise 500 Image formation process

Image formation process

The image-formation system consists of ten steps divided into six functional blocks.

Figure 1-10Image formation process

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Fusing

Fuser

M C K

Table 1-11Image formation process

Functional block	Steps		Description
Latent image formation	1. Pre-exposure		An invisible latent image forms on the
	2.	Primary charging	surface of the photosensitive drums.
	3.	Laser-beam exposure
Development	4.	Development	Toner adheres to the electrostatic latent
			image on the photosensitive drums.
Transfer	5.	Primary transfer	The toner image transfers to the ITB and
	6.	Secondary transfer	subsequently to the paper.
	7.	Separation
Fusing	8.	Fusing	The toner fuses to the paper to make a
			permanent image.
ITB cleaning	9.	ITB cleaning	Residual toner is removed from the ITB.
Drum cleaning	10. Drum cleaning		Residual toner is removed from the
			photosensitive drums.

22 Chapter 1 Theory of operation ENWW