| A | B |
|---|
| Hydrophobic | “Water Hating” – Part of the printing plate that is chemically formulated to repel the water and attract the ink; the image area. |
| Hydrophilic | “Water loving” – part of the printing plate that is chemically formulated to attract the water; the non-image area. |
| Water Fountain | That part of the offset press that stores and supplies water to the dampening system |
| Web-fed press | A press that prints from a roll of paper |
| Sheet-fed press | A printing press that takes individual sheets of paper rather than rolls of paper. |
| Plate Cylinder | The cylinder which holds the printing plate |
| Plate | A thin sheet of paper, metal, or plastic which carries the image |
| Perfecting Press | A printing press that prints both sides of the paper in one pass |
| Offset Lithography | The process of printing from a flat surface with the image and nonimage areas kept separated by chemistry… based on the concept that water and grease don’t mix. |
| Ink Fountain | That part of the offset press that stores and supplies ink to the inking rollers. |
| Impression Cylinder | The cylinder which applies pressure for image transfer to the paper. |
| Image Area | That part of the plate which repels water and carries the ink to print the image. |
| Blanket Cylinder | The cylinder which holds the rubber blanket on an offset press. |
| Blanket | In offset printing, a smooth rubber surface which transfers the image from the plate to the paper. |
| Out-of-Register | Term that refers to images that are visibly out of alignment due to layout error or misalignment during printing. |
