chromogenic processes
- Photographic processes in which subtractive dyes form from the reaction of the oxidation product of the developing agent (resulting from the development of the latent image) with a coupler, contained either in the film or in the developing solution.
color photographs
- The broad class of photographs having images composed of more than one hue, plus the neutral tones. For photographs having a range of tones within one hue, see "black-and-white photographs."
Contemporary
- Refers to painting, sculpture, graphic arts, and architecture dating from the recent past and present. It differs from modern art in that the term 'contemporary art' does not carry the implication of a non-traditional style, but instead refers only to the time period in which the work was created. 'Modern' and 'contemporary' are inherently fluid terms. The term 'contemporary' is sometimes more narrowly used to refer to art from ca. 1960 or 1970 up to the present.
paper (fiber product)
- Refers generally to all types of matted or felted sheets or webs of fiber formed and dried on a fine screen from a pulpy water suspension. The fibers may be animal, such as hair, silk or wool, or mineral, such as asbestos, or synthetic. However most paper is made from cellulosic plant fiber, such as from wood pulp, grass, cotton, linen, and straw.
photographic paper
- Paper used for making photographic prints that consists of a base material with a white or near-white surface that is coated with one or more emulsion layers. It is typically a high grade of paper traditionally made from 100% cotton or linen rags, because lignin and other residues in other paper would react with the photosensitive salts and destroy the image. Photographic paper is strong, uniform, and dimensionally stable when wet and dry. For increased wet-strength, the papers are sized with animal glue, starch, stearic acid, or synthetic resins, such as melamine (used since 1948). One or more fillers, such as barium sulfate, titanium dioxide, clay, starch, or polyacrylamide, are also added for opacity, color, and strength. The papers were calendered to produce a smooth, nonporous surface. Since the late 1960s, most color photographic papers have been made from cellulose fibers coated on both sides with polyethylene.
photographs
- Refers to still images produced from radiation-sensitive materials (sensitive to light, electron beams, or nuclear radiation), generally by means of the chemical action of light on a sensitive film, paper, glass, or metal. It does not include reproductive prints of documents and technical drawings, for which descriptors found under "" are more appropriate. Photographs may be positive or negative, opaque or transparent.
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