News and Events

Gas Ghosting/Chemical Ghosting

The transfer of a printed image from the front of one sheet to the back of another.

Toning is the inability to remove fine ink particles that deposit on to the non — image area of the plate.

Ink rollers cannot except or transfer ink.

Gear streaks are always in parallel to the cylinder axis.

Fountain solution does not have the ability to clean the non-image areas of the plate.

Bands of ink that form and look like rail road tracks. They appear on the roller train and may transfer and appear in the print. They may appear in rows across the sheet anywhere from the lead edge to the tail edge.

Inability for plates to clean up quickly at startup and restart of press

The printed ink film is dry, but has excessive rub and scuffing when going through the delivery and finishing processes.

Ink may appear to be drying out in the roller train or press seems to be unable to adequately supply the proper ink water emulsion to the plate.

The shadows and tight reverses start to fill in and become “plugged” with ink during the run.

Fine lines and dots disappear. Work loses clarity and printing becomes streaky with weak solids and densities. Images disappear.

Plates become sensitive during the run, and will start to transfer ink in the non- image area.

Non-Image/image area piling is ink and paper fiber build up on the blanket that prevents proper offset.

Ink or other material accumulates on the blankets or transfer cylinders on the outside dimensions of the paper stock being run.

Picking or lifting of paper coating onto blankets, plates, and rollers.

pH and conductivity drift out of specification

Printed solid areas are not uniform or smooth in appearance. Ink density is uneven or light.

Fine droplets of ink formed on the rollers fly off creating a mist.

Streaks, tracking, or ink smearing due to the folding or finishing operations through mechanical contact.

Excessive paper lint and or filler depositing in both the image and non-image areas of blankets and or plates.

Ink is transferring from one page to the next or book to book when completed.

Ink pigments breakdown in fountain solution causing a light discoloration in the non-image areas

Ink backs away from ink ball. This causes the print to become starved for ink

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