Rajgopal Subramanian from 8 Roosevelt St, Trenton, NJ 08691, age 71, Phone: 609 443-8991

Method For Rebalancing A Multicomponent Solvent Solution
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US Patent:

8349185, Jan 8, 2013
Filed:

Oct 20, 2010
Appl. No.:

12/908475
Inventors:

Mark A. Hackler - Ocean NJ, US
Rajgopal Subramanian - Robbinsville NJ, US
Assignee:

E I du Pont de Nemours and Company - Wilmington DE
International Classification:

B01D 11/00
G03C 5/08
US Classification:

210634, 203 39, 210639, 210739, 210742, 210767, 210774, 210787, 210806, 430398, 430399, 700265, 700273, 702 55, 702156, 3661521, 3661522
Abstract:

The invention pertains to a method for rebalancing a solvent solution useful for treating photosensitive printing elements having a photopolymerizable layer. The solvent solution becomes contaminated with unpolymerized material and other materials that release from the photosensitive printing elements during washout treating, and separation of contaminates also removes some of one or more components in the used solvent solution. The method rebalances the proportion of the components in a solvent solution having 3 or more components. The method includes measuring a reclaimant, which has been separated from the contaminates, for two or more properties, calculating a mass of the components to be added to the reclaimant based on an equation generated for each measured property, and adding the mass of the component or components to the reclaimant to adjust the proportion of the components in the reclaimant to targeted proportions.

Printing Form Precursor Having Indicia And A Method For Preparing A Printing Form From The Precursor
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US Patent:

20140087306, Mar 27, 2014
Filed:

Sep 3, 2013
Appl. No.:

14/016323
Inventors:

- Wilmington DE, US
Violeta Lungu - Old Bridge NJ, US
Adrian Lungu - Old Bridge NJ, US
Rajgopal Subramanian - Robbinsville NJ, US
Assignee:

E I DU PONT DE NEMOURS AND COMPANY - Wilmington DE
International Classification:

G03F 7/105
G03F 7/30
US Classification:

4302701, 430306
Abstract:

The present invention relates to a photosensitive printing form precursor and a method for forming a printing form from the precursor. The precursor includes a support and a layer of a photosensitive composition adjacent the support, in which at least one indicia is disposed between the support and the photosensitive layer. The indicia identifies the precursor, is retained throughout a multi-step process to convert the precursor into a printing form and in the end-use of the printing form.