Envelopes of Nevada

A World of Color, A World of Possibilities

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Common Printing Problems

Hickies: Defects in print appearing as specks of ink surrounded by a white hole.

Tinting: A uniform discoloration of the background caused by emulsification of ink pigment in the fountain solution.

Offset: An undesirable transfer of the ink film from the front of one sheet to the back of the adjacent sheet.

Chalking: Pigment not properly bound to the paper is easily rubbed off as a powder when dry.

Color fade: A loss of color strength evident when a freshly printed sheet is compared to one previously printed during the same run.

Scumming: An undesirable adhesion of ink to the non-image areas of the printing plate.

Roller Stripping: Failure of the ink to adhere to metal rollers of the press.

Misting: A condition which occurs when a fine mist or spray of ink particles is thrown off of rapidly moving ink rollers.

Streaking: Streaks or bands which appear across the metal cylinder of the press.

Piling: The buildup of ink on the rollers, plate or blanket.

Slow drying: Excessive drying time can delay run of succeeding colors or folding.

Crystallization: The failure of a dried ink film to accept overprinting.

Mottling: An uneven appearance in printed solids characterized by small light and dark areas.

Backing: Ink lacking “flow” backs away from the fountain roller and thus is not delivered to the ductor rollers.

Gloss Ghosting: Uneven drying rate causes loss of gloss in areas of a printed sheet.

Slur: A condition caused by slippage oat the moment of impression between the paper, plate or blanket.

Filling in: A condition in which halftones, tints and reverses “fill in” producing a muddy or solid appearance.

Bleeding: The spread of ink into an unwanted area of the paper.

Picking: Removal of parts of the paper surface or coasting during printing.