Copying pencil Copying pencil A copying pencil, also indelible pencil or chemical pencil, is pencil whose lead contains a dye. The lead is fabricated by adding a dry water-soluble permanent dye to powdered graphite—used in standard graphite pencils—before binding the mixture with clay. Copying pencils were introduced in the 1870s and were originally marketed for copying documents, especially for making permanent copies of a permanent original. This was achieved by creating a hand-written document using a copying pencil, laying a moist tissue paper over the document and pressing down with a mechanical press. The water-soluble dye in the writing would be transferred
Lead Pencil Studio posited by the man-made world." Han and Mihalyo met at the University of Oregon in 1991 while in the architecture program, and their relationship has evolved into a work partnership centered around Lead Pencil Studio. They have also worked in Bellingham, Chicago, Portland, and Seattle, among others. They currently reside in Seattle, Washington. Annie Han was born in Pusan, South Korea in 1967, and attained an accredited Master's equivalent in Architecture (5-year B. Arch) from the University of Oregon in 1993 before studying sculpture for one year at Portland State University in 1994. She is a naturalized US citizen. Daniel