2 SAMPLES

CHEMICAL WATERMARKING is available under trade names such as Customark, Shadowmark, and Trustmark. Trustmark has a tagging material as a security feature that is mixed in the chemical watermark and changes color when exposed to chemical bleaches (Carlson 1988). Three chemically watermarked papers were supplied by the Fox River Paper Company for the purpose of experimentation. They were:

1. a white, optically brightened, lightweight wove paper, GE light-and-shade, chemical watermark, 8 � � 11 in (21.6 � 27.9 cm)
2. a white, optically brightened, lightweight wove paper, Bergdorf Goodman (BG) line chemical watermark, 7 � � 10 � in (18.5 � 26.7 cm)
3. a cream, unbrightened, lightweight laid and chain line paper, JCC line chemical watermark, 8 � � 11 in (21.6 � 27.9 cm).Traditionally watermarked papers used for comparison throughout the experiment were:
4. a white, optically brightened, lightweight wove typing paper, Strathmore Bond 25% Cotton Fiber, USA, 8 � � 11 in (21.6 � 27.9 cm)
5. a white, optically brightened, lightweight wove typing paper, 100% Cotton, Anniversary Bond by Fox River, 8 � � 11 in (21.6 � 27.9 cm)
6. a gray, unbrightened, lightweight laid and chain line typing paper, Eaton Private Stock 25% Cotton Fibre, 8 � � 11 in (21.6 � 27.9 cm).