Ricoh Beluga-C1 Training page 162

Three A3-width LED heads have been joined together.
Using three 600-dpi A3-width heads is one-third the cost of
using a single 400-dpi A0 width head.
Slide 162
LED HEAD STRUCTURE
The main points are on the slide.
Note the major cost reduction. However, there is a small problem with copy
quality at the joints between the heads, as will be seen later in this section.
LED Head Structure
162
Beluga-C1/C1.5 Training