Image Data Processing - Ricoh G035 Service Manual

PRINTER CONTROLLER

2.1.3 IMAGE DATA PROCESSING

The FCI in the LD unit is responsible for edge smoothing and toner saving
functions.
The edge smoothing and toner saving modes can be switched on or off using the
printer user tool or the printer driver.
Edge Smoothing
G035D004.WMF
Usually, binary picture processing generates jagged edge on characters as shown
in the above left illustration (Figure A). The FCI reduces the edges of characters
using edge smoothing.
Whether or not the object pixel undergoes smoothing depends on the surrounding
image data. Changing the laser pulse position smoothes the object pixel.
Toner Saving Mode
Toner saving is done by reducing the laser power, not by varying the development
bias. In toner saving mode, the image data is filtered through a matrix.
Passing through the filter uses less toner to create the latent image on the drum,
and black areas print as gray.
G035 2-4 SM