IP Library › Granted Patent US 8,178,283
Granted Patent B2
US 8,178,283 · App. 12/516,884 · Granted May 15, 2012

Method of treating rinsing wastewater from developing apparatus for photosensitive lithographic printing plate, method of development, and developing apparatus

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Quick Facts
Patent No.
US 8,178,283
App. No.
12/516,884
Granted
May 15, 2012
Kind
B2
Abstract

An object of the present invention is to provide a simple method for treatment of a washing waste liquid, which enhances the flocculation effect and also enhances filtration characteristics of a flocculated washing waste liquid in a flocculation treatment of a washing waste liquid generated in processing a photosensitive lithographic printing plate. Disclosed is a method for treatment of a washing waste liquid generated in a processing apparatus of a photosensitive lithographic printing plate, which comprises (1) adding a cationic polymer flocculant to the washing waste liquid, then (2) adding an anionic polymer flocculent, followed by (3) filtration.

Claims (7)

1. A method for treatment of a used washing waste liquid generated in a processing apparatus during processing of a radiation exposed and developed photosensitive lithographic printing plate comprising a positive-working photosensitive layer comprising an alkali soluble resin and an infrared absorber, which method consists essentially of:

adding a cationic polymer flocculant to the used washing waste liquid, then

adding an anionic polymer flocculant to the used washing waste liquid, followed by

filtration of the used washing waste liquid containing the resulting flocculated materials, and

wherein the alkali soluble resin is a novolak resin.

2. The method for treatment according to claim 1 , wherein the anionic polymer flocculant is added to the used washing waste liquid in an amount of 0.05 to 10 parts by weight based on 100 parts by weight of the cationic polymer flocculant.

3. The method for treatment according to claim 2 , wherein the anionic polymer flocculant is added to the used washing waste liquid in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the cationic polymer flocculant.

Assignments (11)
RELEASE OF SECURITY INTEREST Recorded Jan 24, 2020
From: BARCLAYS BANK PLC
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST) INC.; KODAK AMERICAS LTD.; KODAK REALTY INC.; LASER PACIFIC MEDIA CORPORATION; QUALEX INC.; KODAK PHILIPPINES LTD.; NPEC INC.
Reel/Frame 052773/0001 →
RELEASE OF SECURITY INTEREST Recorded Jul 30, 2019
From: JP MORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; PFC, INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX, INC.; KODAK PHILIPPINES, LTD.; NPEC, INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
Reel/Frame 049901/0001 →
RELEASE OF SECURITY INTEREST Recorded Jul 22, 2019
From: JP MORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC, INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX, INC.; KODAK PHILIPPINES, LTD.; NPEC, INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
Reel/Frame 050239/0001 →
RELEASE OF SECURITY INTEREST Recorded Feb 8, 2017
From: BARCLAYS BANK PLC
To: EASTMAN KODAK COMPANY
Reel/Frame 041656/0531 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Sep 5, 2013
From: CITICORP NORTH AMERICA, INC., AS SENIOR DIP AGENT; WILMINGTON TRUST, NATIONAL ASSOCIATION, AS JUNIOR DIP AGENT
To: EASTMAN KODAK COMPANY; PAKON, INC.
Reel/Frame 031157/0451 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (FIRST LIEN) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC; KODAK AMERICAS, LTD.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE
Reel/Frame 031158/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (SECOND LIEN) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 031159/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (ABL) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
To: BANK OF AMERICA N.A., AS AGENT
Reel/Frame 031162/0117 →
PATENT SECURITY AGREEMENT Recorded Apr 1, 2013
From: EASTMAN KODAK COMPANY; PAKON, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 030122/0235 →
SECURITY INTEREST Recorded Feb 21, 2012
From: EASTMAN KODAK COMPANY; PAKON, INC.
To: CITICORP NORTH AMERICA, INC., AS AGENT
Reel/Frame 028201/0420 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 29, 2009
From: TAKEUCHI, JUN; TSURU, HITOSHI; YAMAKOSHI, YUKIHIRO
To: EASTMAN KODAK COMPANY
Reel/Frame 022752/0659 →