1. Reproduction method for printing wherein characteristic data of an original are transformed into data required for printing, wherein a modified characteristic curve of printing which in relation to the ideal characteristic curve of printing has a maximum above an area coverage of 50% is predefined for the transformation in order to control the dot gain in printing.
2. Reproduction method for printing in accordance with claim 1, wherein the modified characteristic curve of printing in relation to the ideal characteristic curve of printing corresponds to the dependence of a modified dot gain on the area coverage.
3. Reproduction method for printing in accordance with claim 1, wherein the maximum of the modified characteristic curve of printing in relation to the ideal characteristic curve of printing lies at an area coverage of between 50% and 70%.
4. Reproduction method for printing in accordance with claim 1, wherein the maximum of the modified characteristic curve of printing in relation to the ideal characteristic curve of printing lies at approximately 60% area coverage.
5. Reproduction method for printing in accordance with claim 1, wherein the modified characteristic curve of printing in relation to the ideal characteristic curve of printing has a zero crossing at a finite area coverage.
6. Reproduction method for printing in accordance with claim 1, wherein the zero crossing of the modified characteristic curve of printing at low area coverage lies in the range of between 3% and 30% area coverage.
7. Reproduction method for printing in accordance with claim 1, wherein the zero crossing of the modified characteristic curve of printing at low area coverage lies in the range of between 5% and 25% area coverage.
8. Reproduction method for printing in accordance with claim 1, wherein the zero crossing of the modified characteristic curve of printing at high area coverage lies in the range of between 90% and 98% area coverage.
9. Reproduction method for printing in accordance with claim 1, wherein the zero crossing of the modified characteristic curve of printing at high area coverage lies in the range of between 95% and 98% area coverage.
10. Reproduction method for printing in accordance with claim 1, wherein the zero crossing of the modified characteristic curve of printing at low area coverage has a flatter slope than the zero crossing at high area coverage.
11. Reproduction method for printing in accordance with claim 10, wherein the slope of the zero crossing at low area coverage lies in the range of between 20 and 30.
12. Reproduction method for printing in accordance with claim 10, wherein the slope of the zero crossing at high area coverage lies in the range of between 25 and 35.
13. Reproduction method for printing in accordance with claim 1, wherein the maximum of the modified characteristic curve of printing is determined by a correlation of the theoretical area coverage and the dot gain.
14. Reproduction method for printing in accordance with claim 1, wherein the modified characteristic curve of printing is predefined by a mathematical function.
15. Reproduction method for printing in accordance with claim 14, wherein the predefined function comprises several arcs of a circle.
16. Reproduction method for printing in accordance with claim 15, wherein the predefined function comprises two arcs of a circle.
17. Reproduction method for printing in accordance with claim 15, wherein the position of the center point of the circle forming an arc of a circle is adjustable.
18. Reproduction method for printing in accordance with claim 15, wherein the radius of the circle forming an arc of a circle is adjustable.
19. Reproduction method for printing in accordance with claim 14, wherein the predefined mathematical function is one or several arcs of an ellipse, a parabola or a hyperbola.
20. Reproduction method for printing in accordance with claim 1, wherein the modified characteristic curve of printing has in relation to the ideal characteristic curve of printing a maximum percent dot gain of less than 30%.
21. Reproduction method for printing in accordance with claim 20, wherein the maximum percent dot gain lies in the range of between 5% and 30%.
22. Reproduction method for printing in accordance with claim 21, wherein the maximum percent dot gain is approximately 10%.
23. Reproduction method for printing in accordance with claim 1, wherein a modified black color characteristic curve of printing is used for black.
24. Reproduction method for printing in accordance with claim 1, wherein a modified chromatic color tone characteristic curve of printing is used for the chromatic color tones.
25. Reproduction method for printing in accordance with claim 1, wherein printing inks with increased density in the print are used for printing.
26. Reproduction method for printing in accordance with claim 25, wherein the standard density in the print in the case of the printing ink with the lowest density is at least approximately 1.6.
27. Reproduction method for printing in accordance with claim 1, wherein a CMYK set of process colors is used for printing.
28. Reproduction method for printing in accordance with claim 25, wherein the standard density in the print in the case of printing ink of the color tone yellow (Y) is approximately 2.0.
29. Reproduction method for printing in accordance with claim 25, wherein the standard density in the print in the case of printing ink of the color tone magenta (M) is approximately 2.4.
30. Reproduction method for printing in accordance with claim 25, wherein the standard density in the print in the case of printing ink of the color tone cyan (C) is approximately 2.5.
31. Reproduction method for printing in accordance with claim 25, wherein the standard density in the print in the case of printing ink of the color tone black (K) is approximately 3.0.
32. Reproduction method for printing in accordance with claim 25, wherein a printing ink is made from a mixture of binder, colorant and printing additives, and the proportion of the colorant in an ink as proportion of pigment is between 15% and 40%.
33. Reproduction method for printing in accordance with claim 1, wherein the transformation from the original to printing data comprises a color space transformation from an RGB color space to a CMYK color space.
34. Reproduction method for printing in accordance with claim 1, wherein the printing process is an offset printing process.
35. Reproduction method for printing in accordance with claim 1, wherein the modified characteristic curve of printing is entered in a color management system.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A circuit board structure comprising:
a solder mask layer having a plurality of openings, the openings having first conductive vias formed therein, wherein each of the first conductive vias has an exposed surface and the exposed surface of each of the first conductive vias is flush with a surface of the solder mask layer;
a patterned circuit layer formed on the solder mask layer and electrically connected to the first conductive vias;
a dielectric layer formed on the patterned circuit layer and the solder mask layer, wherein a plurality of openings are formed in the dielectric layer to thereby expose parts of the patterned circuit layer; and
a built-up structure formed on the dielectric layer, wherein the built-up structure comprises at least one dielectric layer, at least one built-up circuit layer, a plurality of connecting pads, and a plurality of second conductive vias electrically connecting to the patterned circuit layer,
wherein the connecting pads are used for outwardly, electrically connecting to a semiconductor chip, and the connecting pads are used for inwardly, electrically connecting to the first conductive vias through the built-up circuit layer, the second conductive vias and the patterned circuit layer, so that the exposed surface of each of the first conductive vias is used for electrically connecting to a printed circuit board.
2. The circuit board structure of claim 1, further comprising another solder mask layer formed on a surface of the built-up structure and formed with a plurality of openings for exposing the connecting pads of the built-up structure.
3. The circuit board structure of claim 1, further comprising bumps formed on the exposed surface of each of the first conductive vias.