Browse Prior Art Database

Mirrored Tab/Cavity Artwork Disclosure Number: IPCOM000060436D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue


Related People

Lahey, E Weisel, HC [+details]


Two mirrored glass plates having perfect registration and alignment with different images can be made from one master pattern and a characterization glass. Generate the cavity pattern as a positive image and chemically reverse, creating a correct negative B. Create the tab pattern, and process as a correct negative A. Contact print A to a positive image. In this step, interrupt the chemical reversal process by bypassing the second exposure and second develop fix, and wash and dry. This procedure creates a pattern with unsensitized areas on an otherwise sensitized photo plate. Contact print B to this plate of unsensitized areas and process develop as a reverse positive C, resulting in tines having breaks (tabs) in them. Through normal process contact print B and process as a Reverse Negative E.