Troubleshooting

Ink takes on too little or too much press mix during emulsification.

During the printing operation the highlight dots start to form into a “donut” shape, where the center of the dot no longer is transferring ink.

Irregular “donut” shaped white spots surrounding a small spot of ink.

Glazing is the result from the formation of insoluble components from the ink, paper, and water mixture. Usually occurring on rollers and blankets.

Slurring is the filling in of halftones and at the back edges of solids. Mostly occurs on coated papers and is caused mainly by paper slippage in the impression nip between plate and blanket or blanket and paper.

Ink dries too quickly and fails to bond with the paper. Ink can be wiped off the paper

Wetting agents and or surfactants deposit on to plates that will coat or adhere too the image area becoming non ink receptive.

The fountain solution and mixing system becomes contaminated with a biological growth that feeds on the ingredients in the chemistry, resulting in a degradation of the chemistry.