CP80 and CP80 Plus Service Manual
2-15
Strobe
If an entire column of thermal elements (pixels) needs to be activated, the overall
power to the printhead will drop due to the current draw. The strobe setting
compensates for this drop in voltage by increasing the time the pixels are active.
For example, if all 672 pixels were turned on, it would take longer for each pixel
to reach the threshold temperature than it would if only 300 pixels were turned
on. This would result in a lighter image if more pixels are needed, and a darker
image if only a few pixels are needed.
The Strobe setting is a time factor that compensates for this reduction in power
by increasing the "on-time" for each pixel based on how many pixels are required
for the printed column. The strobe setting value is a baseline number for a
look-up table that the printer calculates for each printed column.
The gray test card is used to detect strobe misadjustment. This test card is
available only to the Advanced User in Diagnostics.
Summary of Contents for CP80
Page 1: ...Datacard CP80 and CP80 Plus Card Printers Service Manual May 2007 Part No 539490 002 Rev C ...
Page 14: ...1 4 Introduction ...
Page 17: ...CP80 and CP80 Plus Service Manual 2 3 Print Engine Functional Block Diagram ...
Page 18: ...2 4 Theory of Operation Laminator Functional Block Diagram ...
Page 22: ...2 8 Theory of Operation LCD Service Mode Menu Diagram ...
Page 52: ...2 38 Theory of Operation ...
Page 158: ...6 6 Removal and Replacement Print Engine Front Wire Routing Diagram ...
Page 159: ...CP80 and CP80 Plus Service Manual 6 7 Print Engine Duplex and Printhead Wire Routing Diagram ...
Page 160: ...6 8 Removal and Replacement Laminator Front Wire Routing Diagram ...
Page 161: ...CP80 and CP80 Plus Service Manual 6 9 Laminator Rear Wire Routing Diagram ...
Page 162: ...6 10 Removal and Replacement Power Supply Wire Routing Diagram ...
Page 163: ...CP80 and CP80 Plus Service Manual 6 11 Print Engine Cable Connection Diagram ...
Page 164: ...6 12 Removal and Replacement Laminator Cable Connection Diagram ...