Kodak 700, 630, 500 service manual Deadband Alignments, Slow Deadband

NovaJet 500/630/700 Series Service Manual

6.Continue until all six calibrations on the Color Calib Menu have been accomplished.

Deadband Alignments

Deadband calibration compensates for minute differences created when bidirectional printing is used. Unidirectional printing is not affected by deadband. There are four types of deadband tests:

Deadband

Slow Deadband

All Lines Tests

Single Line Test

Figure 3-23. Slow Deadband.

Figure 3-22 shows what the display will look like when printing the slow deadband test if it is out of alignment. A correctly aligned printer will appear as if there is only a series of vertical lines printed. No difference between the top and bottom set of lines to the center set of lines would be appearant.

The SLOW DEADBAND calibration is a precision test that checks the firing time of the jets as related to the forward and reverse direction.

Allowable values for the Slow Deadband calibration is -2, -1, 0, 1 and 2.

The Single Line Test and All Line Test are variations of the deadband test except they print longer lines so that long time integration of the deadband calibration can be observed. The Single Line Test prints only one line at a time while the All Line Test prints all lines at the same time. These tests were designed primarily to be used in manufactoring only.

The deadband test on a NovaJet 500 series printer will look like the display in Figure 3-22 and the procedures to adjust the values are in the following section.

MAINTENANCE

Maintenance 3-29