I am using FOP version 1.1.
I tried the following configurations, listed below.
Let me know if any further information is required.
Variant 1
<renderer mime="image/tiff">
<!--transparent-page-background>true</transparent-page-background-->
<!--compression>NONE</compression-->
</renderer>
Variant 2
<renderer mime="image/tiff">
<!--transparent-page-background>true</transparent-page-background-->
<compression>NONE</compression>
</renderer>
Variant 3
<renderer mime="image/tiff">
<!--transparent-page-background>true</transparent-page-background-->
<compression>PackBits</compression>
</renderer>
Variant 4
<renderer mime="image/tiff">
<color-mode>rgba</color-mode>
<!--transparent-page-background>true</transparent-page-background-->
<compression>PackBits</compression>
</renderer>
Variant 5
<renderer mime="image/tiff">
<color-mode>rgba</color-mode>
<!--transparent-page-background>true</transparent-page-background-->
<rendering>true</rendering>
<compression>PackBits</compression>
</renderer>
Variant 6
<renderer mime="image/tiff">
<color-mode>rgba</color-mode>
<transparent-page-background>true</transparent-page-background>
<rendering>true</rendering>
<compression>PackBits</compression>
</renderer>