In which method of marker planning are light sensitive papers used?

Correct option is C

The Diazo Photographic method uses light sensitive papers in marker planning. This technique involves placing the pattern on a photosensitive diazo paper, which is exposed to ultraviolet (UV) light. The areas exposed to light undergo a chemical reaction, allowing the pattern lines to be reproduced clearly on the paper after development. This method is widely used in garment manufacturing for accurate pattern replication to optimize fabric usage during cutting.
Information Booster: Marker planning is crucial in the apparel industry as it determines how patterns are arranged on fabric to minimize wastage. The diazo photographic method offers precision by using diazo paper sensitive to UV light, ensuring sharp, detailed pattern outlines. After exposure, the paper is developed in ammonia vapour, which reveals the pattern. This method is cost-effective, efficient, and helps reduce fabric loss, thereby enhancing production efficiency. It is especially useful when multiple copies of patterns are needed.
Additional Knowledge:
· (a) Computerised: Digital marker planning uses CAD (Computer-Aided Design) software, eliminating the need for physical copying or light sensitive materials.
· (b) Hectograph Carbon system: Uses carbon paper to copy designs manually but doesn’t involve light sensitivity.
· (d) Carbon Duplicating: Relies on carbon paper to duplicate patterns; it’s a manual, non-photographic process.