Riso RZ3xx Series Technical Manual page 81

At print drum Position-A
When the print drum comes to its position-
A, the G-lever is pushed down by the
timing cam and the guide roller is raised
up. The guide roller is disengaged from
the timing roller.
First paper feed starts
When the first paper feed starts by the
rotation of the rotation of the scraper roller
and pickup roller, the leading edge of the
paper arrives to the second paper feed
area, between the At this point, the timing
cam no longer pushes the G-lever and the
guide roller pressure spring pulls the guide
roller down against the timing roller,
reventing the paper to go any further into
the machine.
Second paper feed starts
When the first paper feed operation ends,
the rotation of the sector gear cam swings
the sector gear assembly in the clockwise
direction. The clockwise swing of the
sector gear drives the timing roller. The
timing roller drives the guide roller with the
paper clamped in between, sending the
paper onto the printing area.
RISO Inc. Technical Communications
CHAPTER 5: SECOND PAPER FEED SECTION
Guide roller
Timing cam
Timing roller
G-lever assembly
Sector gear cam
Sector gear assembly
[ 5 - 3 ]
Guide roller pressure spring
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