The image size in the design software differs from the image size in RasterLink7
The size of images created in design software will not perfectly match the image size displayed in RasterLink7. This can be due to a number of reasons.
- Restrictions on how image size is handled in PostScript language
- Size is normally specified in units of mm or inches in design software, but in PostScript, values are managed in Points (1/72 inch).
The sizes of image objects are handled as the actual number of Points, but the overall size when saving as an eps file or PostScript custom page size for printer driver output is ultimately converted to an integer-based number of Points. This can result in conversion errors of up to 1 Point (0.353 mm). - Effects of line width
- The object size displayed in the [Information] window in Adobe Illustrator does not include line width. The actual object size will be the size including line width.
- Effects of size calculation method in specific design software
- Effects occur due to specific size calculation methods in the design software, in the same way as described in Parts surrounding images are missing.
Because errors of approximately 1 Point will occur for this reason even when outputting at actual size, enlarging or reducing using RasterLink7 will increase these errors. (An error of 1 Point will become an error of 3.5 mm if enlarged by 1000%.)
If accuracy of the output size is an important factor, the following points should be borne in mind to minimize any errors:
- Try to print at actual size where possible.
- Set in % when enlarging or reducing. (Do not set values in mm or inches.)
