Samsung SCX4521F - B/W Laser - All-in-One - Sample Tests Patterns

Reference Information
Samsung Electronics
Service Manual
11-5
11.4 Sample Tests Patterns
The sample patterns shown below are the standard test patterns used in the factory.
The life of the toner cartridge, developer cartridge and printing speed are measured with the pattern shown
below (5%). The A4 ISO 19752 standard pattern samples are reproduced reduced to 70% of the actual A4
size.
A4 ISO 19752 Standard Patterns