FujiFilm ClearView CS, Service Manual

Page: 901 / 1404

CR-IR 363
Service Manual
MC-412
MC-412
011-202-11E
06.29.2012 FM6046
17. Shading/Sensitivity Correction for
IP Type ST/ST-BD
CAUTION
When correction is to be made by using the IP type ST-BD in the CR-IR363,
make sure that the IP type ST-BD is correctly inserted into the ST-BD cassette.
To check, open the cassette via a knob on the rear lid of the cassette, and
confirm that a blue marker indicating the IP type ST-BD is at the right corner of
the IP.
Even though an IP of a wrong type is inserted, the machine cannot recognize
the error.
If a cassette with wrong IP type is inserted, appropriate image cannot be
obtained.
u
INSTRUCTION
u
The adjustment procedures differ depending on the IP type used. Check the
procedures as appropriate.
{MU:5.3 [5-6]
_
Correction
}
u
NOTES
u
- Shading/sensitivity correction is done with the IP type of ST, and the IP size of 14" x
14" (35cm x 35cm) or 14" x 17" (35cm x 43cm).
- When the IP type is ST-BD, the largest sized IP of the IPs used by the user should
be utilized for shading/sensitivity correction.
- When the IP type is ST-BD, the correction procedures are the same as those for
shading/sensitivity correction of a one-side ST, and sensitivity adjustment for a both-
side ST is automatically selected from the barcode information in the cassette.
- Before shading/sensitivity correction, format adjustment should have been done. If
there is any white blank portion on the exposed image, error is likely to occur.
REFERENCE
Exposure reference conditions (approx. 1mR)
Distance Voltage Amperage Time
Tungsten X-ray tube 1.8m 80Kv 50mA 0.013 sec
17.1 Shading/Sensitivity Correction for IP Type
ST and ST-BD
u
NOTES
u
- The IP must be read for a one-minute period from 10 to 11 minutes after the X-ray
exposure. Otherwise, correct correction on the sensitivity cannot be done. Exercise
care.
- Be sure to use the tungsten X-ray tube. The molybdenum X-ray tube will not result
in normal correction, because it suffers from tube-to-tube variability.
u
INSTRUCTIONS
u
- The calibrated X-ray dosimeter should be used to measure the X-ray dose.
- Correction of the reading must be done for a one-minute period from 10 to 11
minutes after the exposure.
1.
Using the X-ray dosimeter, measure the X-ray dose for exposing the
IP, and write it down.
2.
Expose ST (one side) or ST-BD (both side) with the tungsten X-ray
tube (approx. 1 mR). If the IP is of type ST, an IP with a size of 14" x
14" (35cm x 35cm) or 14" x 17" (35cm x 43cm) should be used. If the
IP is of type ST-BD, the largest sized IP of the IPs used by the user
should be used.