AGFA ADC Compact Plus User Manual page 58

Image plate
Another difference between an ADC Compact cassette and a conventional
cassette is the X-ray sensitive element (image receptor). The latter is no
longer a film, but an image plate that can be re-used thousands of times.
The way in which this image plate is placed into the cassette is of great
importance. The side containing the white phosphor must be oriented
towards the black tube side of the cassette. The dark support side is then
oriented towards the red side of the cassette, as shown in the illustration
below.
The 'clips' mounted on the cassette prevent the cassette from being opened
by a conventional daylight system such as the Curix Capacity (Plus), so that
even in hybrid conventional/digital departments the occurrence of errors is
avoided.
Clip
58
Dark support side
White, phosphor-containing
side
2231C EN 20040224