1. An image processing method for color conversion that converts image data into an amount of color material to be used in printing, the image processing method comprising:
changing the amount of color material that can be obtained in the color conversion by converting black represented by image data, into an amount of color material that reduces saturation.
2. The image processing method according to claim 1, wherein changing the amount of color material is performed in equivalent luminance expressed by the sum of measured luminance and luminance depending on the color, by reducing the luminance depending on the color.
3. The image processing method according to claim 2, wherein a value of luminance depending on the color in the equivalent luminance is set based on the predetermined amount of color material corresponding to black to adjust a color tone of a gray line.
4. The image processing method according to claim 1, wherein the color conversion is performed using a table that outputs the amount of color material changed by converting the black represented by image data so as to reduce the saturation.
5. The image processing method according to claim 1, wherein the image data is represented by brightness signals R, G, and B, and the black is expressed as (R, G, B)=(0, 0, 0).
6. A program having a computer function as an image processing apparatus for color conversion that converts image data into the amount of color material to be used in printing according to the image processing method of claim 1.
7. An image processing apparatus for color conversion that converts image data into an amount of color material to be used in printing, wherein
the amount of color material that can be obtained, in the color conversion, by converting black represented by image data is changed into an amount of color material that reduces saturation.
8. The image processing apparatus according to claim 7, wherein the change for reducing the saturation is performed, in equivalent luminance expressed by the sum of measured luminance and luminance depending on the color, by reducing the luminance depending on the color.
9. The image processing apparatus according to claim 8, wherein a value of luminance depending on the color in the equivalent luminance is set based on a predetermined amount of color material corresponding to black, thus adjusting a color tone of a gray line.
10. The image processing apparatus according to claim 7, wherein the color conversion is performed using a table that outputs the amount of color material changed by converting the black represented by image data so as to reduce the saturation.
11. The image processing apparatus according to claim 7, wherein the image data is represented by brightness signals R, G, and B, and the black is expressed as (R, G, B)=(0, 0, 0).
12. An image processing method for color conversion that converts image data into an amount of color material to be used in printing, the method comprising:
printing a chart of patches produced by adding varying amounts of color material to grid point data representing a black point; and
determining, according to a patch selected from the patches that were printed, the amount of color material that increases the density of black obtained, in the color conversion, by converting black represented by image data.
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 method for manufacturing a card body having a plurality of plastic layers, comprising:
a card core made of at least one core layer,
at least two cover layers for covering both surfaces of the card core, and
wherein the plastic layers are laminated to each other in one work operation or in several work operations, wherein there is used as at least one of the cover layers andor as at least one intermediate layer the foil composite material.
2. The method according to claim 1, wherein laminating is effected at a temperature of between 120\xb0 C. and 200\xb0 C.
3. The method of claim 1, wherein the foil composite material comprises:
at least one first outer plastic layer,
at least one inner plastic layer,
at least one second outer plastic layer,
wherein all the layers jointly form a coextruded composite,
the plastic of the at least one first outer layer is a polyethylene terephthalate glycol copolymer (PETG) or contains a PETG,
the plastic of the at least one inner layer is a thermoplastic copolyester elastomer (TPC) or contains a TPC,
the plastic of the at least one second outer layer is a PETG or contains a PETG.
4. The method of claim 1, wherein the foil composite material being in the form of a coextrusion of at least one first outer layer plastic material, at least one second outer layer plastic material, and at least one inner layer plastic material, comprising:
merging all the plastic materials in a molten state, and extruding them through an extruder nozzle that extrudes a foil, to thereby obtain an extruded foil composite material, in which an inner plastic layer is covered on both sides by a first and a second outer plastic layer,
wherein the composition of at least one first outer layer plastic material is a polyethylene terephthalate glycol copolymer (PETG) or contains a PETG,
the at least one second outer layer plastic material has a composition comprising a thermoplastic copolyester elastomer (TPC) or contains a TPC,
the at least one inner layer plastic material has a composition comprising a PETG or contains a PETG.