Carbonless paper, also known as NCR paper (No Carbon Required), is a specialized type of paper designed for creating duplicate or triplicate copies without the need for carbon sheets. Here are the key features of carbonless paper:

1. Chemical Coating: Carbonless paper comprises multiple layers, each coated with a specialized chemical. When pressure is applied to the top sheet during writing or printing, it reacts with the chemicals on the underlying sheets to create copies without the use of carbon.
2. Multiple Parts: Carbonless paper is available in sets with multiple parts (typically two, three, or more), allowing for the creation of several copies simultaneously.
3. Sequential Color Coding: The layers of carbonless paper are often color-coded for easy identification of each copy. Common color sequences include white, yellow, and pink, with subsequent copies maintaining the same color pattern.
4. Uniform Image Transfer: The chemical coating ensures uniform and precise image transfer, resulting in clear and legible copies across all parts of the set.
5. Wide Range of Uses: Carbonless paper finds applications in various fields, such as invoice and receipt books, order forms, and any situation where duplicate or triplicate copies are required without the mess and inconvenience of carbon paper.