User Manual

48
2921B EN 20031206
4 After the image is printed, the Drystar 5300 will display the optical density
values:
The displayed values represent the following steps on the test film:
• Base+Fog -The density value of the Base + Fog step.
This value should be less than 0.25.
• Mid Density -The density value of the Mid density step.
This value should be greater than 1.20.
• DD - Density Difference, i.e. the density value of the high-density step minus the
density value of the low-density step. This value should be greater than 1.30.
• MaxD - The density value of the 100% step.
• (densitometer = xxxxx) - indicates the default densitometer used to measure the
density values. It should not be changed during the entire QC procedure.
5 Record the density levels on the Drystar 5300 Chart 1 (Drystar 5300
‘Determination of Operating Levels’). Refer to Appendix C ‘Quality Control
Charts’ on page 71.
6 Press the Confirm key to return to the main menu.
7 Repeat steps 1 through 6 once a day for five consecutive days, as indicated
on the Drystar 5300 Chart 1.
8 Calculate the average value of the densities from the five (5) images. These
values represent operating levels, or aim values, for each density.
9 Record the respective aim (average) values as the ‘Operating levels’ on the
Drystar 5300 Charts 2A and 2B (Drystar 5300 ‘Daily Density Control Chart’).
Refer to Appendix B ‘Quality Control Charts’ on page 71.
If the Mid Density and DD values do not meet or exceed the
recommended values, the reason must be found and the problem solved
before any further clinical films can be printed.
Refer to ‘Maintaining optimal image quality’ on page 101 and ‘Preventive
maintenance’ on page 161, or call your local Agfa service organization.
QC readings:
Base+Fog x.xx
Mid Density x.xx
DD x.xx MaxD x.xx
(densitometer=xxxxx)
QC