Fusing Unit - Gestetner A294 Service Manual

DIFFERENCES FROM THE A294 I / A295 I MODELS

1.6 FUSING UNIT

1. Web length increased
The length of the web [A] has been
increased from 10m to 20m. This new
20m web cannot be installed on the
A294/A295 models, as there have
been changes in the machine's frame.
In addition, a stopper (Web Break
Pad) [B] made of rubber has been
added to the web unit shaft to ensure
that slack does not develop in the 20m
web while rolling (Web Break Pad is a
600K replacement part). Note that this
part is only for the 20m web. Also note
that the upgrade kit uses a 14m web.
2. Web drive modification
With the increased length of the web,
the number of gears has been
increased from 6 to 8 in order to
maintain the balance between motor
rotation (unchanged) and the amount
of web that is rolled/unrolled.
In addition, these gears allow the
machine to switch over to a fine-
precision drive control when the web is
full and when it has run out.
3. Web rolling/unrolling control
modification
• SP1902-2 (Web Motor Drive Interval)
Destination
US
Europe, Asia
• SP1902-3 (Web Motor Drive Time)
A294 I / A295 I
0.8 sec
4. Pressure roller changed from a nonconductive to a conductive type.
Since the new toner is more sensitive to static electricity, which can lead to
black spots on copies, the pressure roller has been changed to one with a
conductive surface to ensure this does not occur. The new roller has a black
surface with visible wrinkles, however these wrinkles have no effect on image
quality.
A294/A295
CÓPIA NÃO CONTROLADA
PPM
A294 I / A295 I
85 42 sec
105 34 sec
85 42 sec
105 34 sec
CÓPIA NÃO CONTROLADA
Interval
A294 II / A295 II
21 sec
17 sec
11 sec
9 sec
A294 II / A295 II
2.8 sec
11-4
[B]
[A]
A294D736.WMF
A294D733.WMF
SM