A new high-speed color printer uses new image screening methods that lead to superior-quality images. The screen rulings as well as the screening angles are varied. The cyan, magenta, and yellow screens are around 200 lines per inch. The black screen starts at 212 lines per inch at 45 degrees and progresses to 300 lines per inch at zero degrees when half the pels in the basic cell are on. This improves the details in the black color plane without introducing significant m&b patterns.
By: Joan L. Mitchell, Gerhard R. Thompson, Chai Wah Wu, Tim J. Trenary, Yue Qiao
Published in: RC22274 in 2001
LIMITED DISTRIBUTION NOTICE:
This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.
Questions about this service can be mailed to reports@us.ibm.com .