This site has not been updated since May 2004. In the rapidly developing world of digital printing, this is a very long time! In consequence, the information found on this website is out of date and may not be accurate, and should be treated with caution.

Visual Examination - Print Characteristics (5)

Medium Class and Structure (cont.)

III. Coated Paper-Plastic Combination
The effects of applying plastic films to a paper base have been tested in the manufacture of photographic papers. Resin coated (RC) paper (Figure 12) has the great advantage that it does not soak up the chemistry contained in the processing liquids. This concept does not apply to the ink jet process, but RC paper has been adopted nonetheless, presumably because it lends the look and feel of a real photograph to a digital print (for this reason, many brand names contain a form of the word "photographic"). Furthermore, the use of an anticurling layer on the reverse of a base of paper keeps the print flat, even when moisture is applied to one side in the amount that it is in ink jet printing. The degree of structural complexity of paper-plastic combination media can be high A range of media has been developed that offers the structure of bond paper with either a plastic layer on the front, reverse, or on both sides. Combination media are usually coated with an ink receptive layer, and they are most likely to have a manufacturer's logo on the verso.

Figure 12. RC paper for digital prints

Figure 13. Cross-section of ink jet on the coated Kodak PF Large Format Photo Glossy medium, 62.5 x magn., transmitted light. This cross-section shows 5 layers, which are from top to bottom: an ink receptor coating with incorporated plastic spheres, a layer of opaque, white pigment in a binder, which in transmitted light appears black, the paper substrate, and two layers of plastic.