Kodak 800 SERIES service manual Ink System Pressure Theory, Ghosting

NovaJet 800 Series Service Manual

Ink System Pressure Theory

The ink system works on less than 1/10 psi pressure. The reservoir caps should remain loose to allow for atmospheric pressure to push down on the ink to provide adequate pressure on the ink. The purpose of the cartridge priming procedure is to establish -2 to -5 inch head pressure in the upper chamber of the cartridge. The cartridge must have between 15 and 40 ml of ink inside the cartridge for adequate printing pressure. Proper cartridge pressure and ink level is required for long print opera- tions.

Figure 4-55. Ghosting.

Ghosting is a phenomena of inkjet technology. Adjust pre-heat levels to help correct. The temperature control mode on the NJ880 is the default setting by may be changed to preheat to help offset the ghosting effects observed.

Troubleshooting 4-53