Dr. Omar S. Leung Profile

Dr. Omar S. Leung

Senior Engineer at Silicon Light Machines

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 24 January 2004 Paper

Computer-to-plate printing using the Grating Light Valve device

Eiichi Tamaki, Yoshimi Hashimoto, Omar Leung

Proceedings Volume 5348, (2004) https://doi.org/10.1117/12.525895

KEYWORDS: Reflectivity, Printing, Imaging systems, Polarization, Grating light valves, Computing systems, Silicon, Modulation, Switching, Graphic arts

Read Abstract +

A new class of commercial platesetters, called computer-to-plate (CtP) systems, has been introduced in the graphic arts industry in the past few years. As opposed to conventional systems that use an analog mask, these CtP systems employ direct digital imaging methods to generate patterns on metal plates used for offset printing. By eliminating this intermediate mask step, CtP platesetters enable users to transfer images directly from the computer to the plate, thus reducing cost and cycle time. The Grating Light Valve (GLV) is a diffractive MOEMS device that has been successfully implemented as the spatial light modulator in a commercial CtP platesetter for the graphic arts industry. The combination of high power handling capability, fast modulation rate, and large number of pixels on the GLV allows for increased printing speed. Properties of the GLV, such as analog gray scale, and pulse width modulation can be used to increase print quality. In order to create images on the plates, infrared laser illumination is focused onto the GLV device, which reflects the beam with controlled intensity onto a photo-thermal medium. While offering advantages in quality and throughput, the high pixel count and form of the GLV presents some challenges in illumination and projection onto the printing plate. This paper will describe the system architecture and method of operation for a GLV-based optical write engine, and show performance and results.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years