About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
IEEE T-ED
Paper
A High-Resolution and High-Speed Ferroelectric Liquid-Crystal Shutter Array Print Head
Abstract
A 1-in-wide, 577-dot/in, and 4:1 multiplex ferroelectric liquid crystal (FLC) shutter array has been fabricated and tested for optical performance. The array has a cell gap of 2.8 μm and is surface-stabilized [1] with an FLC material of high spontaneous polarization (140 nC/cm<sup>2</sup>) and fast switching time (16 μs) at room temperature. It is capable of operating at a speed of 6.5 in/s (24 ppm printing speed) with optical contrast ratios better than 4. Using a tungsten-halogen illumination, a prototype print head has been made, and print samples have been obtained on an electrophotographic printer engine. © 1991 IEEE