Photographic paper

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Types_of_Photographic_Papers

Paper coated with a light-sensitive chemical formula

Photographic paper is a type of paper that is coated with a light-sensitive chemical formula, used for making photographic prints. When exposed to light, the paper undergoes a chemical reaction that creates a visible image. This process is a fundamental aspect of traditional photography.

Types of Photographic Paper

Photographic paper can be classified into several types based on the emulsion used, the surface finish, and the intended use. The most common types include:

• Silver halide paper: This is the most widely used type of photographic paper, which contains a coating of silver halide crystals. When exposed to light, these crystals form a latent image that is developed into a visible photograph.
• Inkjet paper: Specially designed for use with inkjet printers, this type of paper has a coating that absorbs ink and prevents it from spreading.
• Resin-coated paper: This paper has a polyethylene coating that makes it more durable and resistant to water and chemicals.
• Fiber-based paper: Known for its high quality and archival properties, fiber-based paper is often used for fine art photography.

Surface Finishes

Photographic paper is available in various surface finishes, each providing a different aesthetic effect:

• Glossy: Provides a shiny, reflective surface that enhances color saturation and contrast.
• Matte: Offers a non-reflective surface that reduces glare and is suitable for framing.
• Lustre: A semi-gloss finish that combines the benefits of both glossy and matte papers.
• Metallic: Gives a unique, pearlescent finish that adds depth and vibrancy to the image.

Photographic Paper Sizes

Photographic paper comes in a range of sizes to accommodate different printing needs. Common sizes include:

• 4x6 inches
• 5x7 inches
• 8x10 inches
• 11x14 inches
• 16x20 inches

Development Process

The development process of photographic paper involves several steps:

1. Exposure: The paper is exposed to light through a negative or a digital file. 2. Development: The exposed paper is immersed in a chemical developer that reduces the exposed silver halide crystals to metallic silver, forming a visible image. 3. Stop bath: The development process is halted by immersing the paper in a stop bath, usually a weak acid solution. 4. Fixing: The paper is then placed in a fixer solution that removes the unexposed silver halide crystals, making the image permanent. 5. Washing: The paper is thoroughly washed to remove any residual chemicals. 6. Drying: Finally, the paper is dried, either by air drying or using a heated dryer.

Related Pages

• Photography
• Darkroom
• Photographic film
• Silver halide
• Inkjet printing
• Resin-coated paper
• Fiber-based paper

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