Diazo copying (blueprinting) is a printing process where the original document and photosensitive paper is pressed together, upon which light is shined through to burn the text onto the photosensitive paper. Very thin paper is needed for this process. However, the thinner the paper, the less durable the paper becomes and becomes difficult to handle. Mitsubishi Paper Mills Champion Copy was developed to produce a paper that is durable but has high see-through. It also offers high printability for letterpress and offset-printing.
Yamamoto's fountain pen tests showed fast dry times, good color reproduction, and no bleed-through. This paper is made using old equipment at the Takasago factory in Hyogo prefecture.
- Size: A4
- 50 sheets
- Grain direction: Long grain