10:16 AM
PM2 PRINTING
Resolution can be confusing, even for people who have been working in the trade for a long time. This is largely due to the fact that, in digital technology, resolution has to be considered in both the input stage (scan) and the output stage (Imagesetter or laser printer). Understanding these two resolutions is vital to the process of getting high-quality images.
Halftone Spots
Halftone spots are the result of turning off and/or on the dots in a halftone cell. This is how an imagesetter creates variant dot sizes.
Screen Frequency (Line Screen)
The number of rows or Lines Per Inch lines of spots in a halftone image within a given distance (lpi). Screen frequency effects the size and sharpness of the halftone spots the imagesetter will render. Choosing the correct screen frequency will depend on such things as the type of paper it will be printing on and the amount of dot gain expected on the press.
Halftone Spots
Halftone spots are the result of turning off and/or on the dots in a halftone cell. This is how an imagesetter creates variant dot sizes.
Screen Frequency (Line Screen)
The number of rows or Lines Per Inch lines of spots in a halftone image within a given distance (lpi). Screen frequency effects the size and sharpness of the halftone spots the imagesetter will render. Choosing the correct screen frequency will depend on such things as the type of paper it will be printing on and the amount of dot gain expected on the press.
Resolution Specifications
| LPI | Imagesetter Resolution |
| 133 LPI | 2400 DPI |
| 150 LPI | 2400 DPI/3000 DPI |
| 175 LPI | 3000 DPI |
0 comments:
Post a Comment