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| Number | Title | Issue Date |
| 8361701 | Method for making lithographic plates Method for producing an imaged lithographic printing plate comprising the step of developing an imagewise exposed negative working precursor with a developer comprising an alkylene oxide derivative of formula (A), wherein R1 is a linear or branched C... | 01/29/2013 |
| 8105755 | Method for processing of photopolymer printing plates with overcoat Method is described for producing an imaged lithographic printing plate from a precursor comprising a free-radical polymerizable coating and an oxygen-impermeable overcoat, characterized in that removing the overcoat, developing and gumming is carried out in one sin... | 01/31/2012 |
| 7829261 | Method for making a lithographic plate Process for the posttreatment of an imaged lithographic printing plate comprising (a) providing a lithographic printing plate comprising image areas and non-image areas on a lithographic substrate; (b) bringing the lithographic printing plate of step (a) into contac... | 11/09/2010 |
| 7569329 | Method for making a lithographic plate A process for the post-treatment of an imaged lithographic printing plate comprises (a) Contacting a lithographic printing plate having image areas and non-image areas on a lithographic substrate with a solution comprising at least one phosphono-substituted siloxane... | 08/04/2009 |
| 7553607 | Interlayer for lithographic printing plates Lithographic substrate comprising (a) a dimensionally stable plate- or foil-shaped support, (b) an aluminum oxide layer provided on at least one side of the support (a), and (c) a hydrophilic layer applied onto the aluminum oxide layer comprising at least one phosph... | 06/30/2009 |
| 7524613 | Material for the treatment of lithographic substrates and lithographic printing plates Phosphono-substituted siloxanes suitable as interlayer material in lithographic substrates and for post-treating developed lithographic printing plates, obtainable by reacting (a) a first organosilicon compound of the general formula (I) and (b) a second organosilic... | 04/28/2009 |
| 6649324 | Aqueous developer for lithographic printing plates An aqueous developer for lithographic printing plates and a method for developing the printing plates are disclosed. The developer comprises an organic dispersing agent. The developer develops multi-layer printing plates quickly, with high throughput, but... | 11/18/2003 |
| 6613494 | Imageable element having a protective overlayer Positive-working imageable elements and methods for their preparation are disclosed. The elements comprise a hydrophilic substrate; a bottom layer, which contains a positive-working photosensitive composition; and a protective overlayer, which has an over... | 09/02/2003 |
| 6569609 | Process for developing exposed radiation-sensitive printing plate precursors A replenisher composition developing exposed radiation-sensitive printing plate precursors for plate/developer systems in which the electrical conductivity of the developer does not decrease to the same extend as the activity of the developer decreases or... | 05/27/2003 |
| 6517622 | Additive correction fluid for metal printing forms A composition for positive correction of lithographic printing plates, applicable by pen or by brush, is disclosed. The correction fluid contains a film forming phosphate ester and a solvent that does not dissolve image areas of the printing plate. A corr... | 02/11/2003 |
| 6391530 | Process for developing exposed radiation-sensitive printing plate precursors A replenisher composition developing exposed radiation-sensitive printing plate precursors for plate/developer systems in which the electrical conductivity of the developer does not decrease to the same extend as the activity of the developer decreases or... | 05/21/2002 |
| 6255042 | Developing system for alkaline-developable lithographic printing plates with different interlayers The invention is aqueous alkaline composition comprising at least one alkali metal silicate, glycerol, at least one glycol and phosphoric acid and/or phosphates. The composition can be used as a developer and replenisher for developing either positive-wor... | 07/03/2001 |
| 6143479 | Developing system for alkaline-developable lithographic printing plates An aqueous alkaline composition comprising at least one phosphonic acid, at least one polyglycol derivative and at least one glycol. The composition can be used as either a developer or a replenisher for either positive-working or negative-working alkalin... | 11/07/2000 |
