| Patent application number | Description | Published |
|---|
| 20090020035 | Inkjet ink - The present invention pertains to an aqueous inkjet ink comprising anionic self-dispersing pigment and a certain mixture of ammonium and alkali metal cations. The inks exhibit greatly extended latency. | 01-22-2009 |
| 20090020037 | Ink jet ink - The present invention pertains to an aqueous inkjet ink comprising anionic self-dispersing pigment, a certain mixture of alkali metal cations and a certain humectant. The inks exhibit greatly extended latency. | 01-22-2009 |
| 20090054563 | Inkjet ink - The present invention pertains to an aqueous inkjet ink comprising anionic self-dispersing pigment with a certain mixture of tetraorganoammonium and alkali metal cations. The inks exhibit greatly extended latency. | 02-26-2009 |
| 20090056588 | Inkjet ink - The present invention pertains to an aqueous inkjet ink comprising pigment stabilized to dispersion with anionic dispersant, wherein cations present in the ink comprise a mixture, in a certain molar ratio, of lithium and one or more of sodium, potassium, rubidium and/or cesium. The inks exhibit greatly extended latency. | 03-05-2009 |
| 20100081740 | Aqueous inkjet ink comprising self-dispersing pigment - Disclosed is an inkjet ink comprising an anionic self-dispersing pigment, lithium counter-ions and an aqueous vehicle comprising water and caprolactam. This ink exhibits very favorable latency. | 04-01-2010 |
| 20100091053 | INK JET PRINTING METHOD - This invention pertains to a drop-on-demand ink jet printing method, more particularly to a method of printing wherein a purge image is logically combined with a selected image so as to insure a desired amount of drop firing from every jet of an ink jet printhead for every page printed. The inventive method avoids image defects that could otherwise occur as a result of faulty drop firing from infrequently used nozzles. Purge image data that specifies the deposition of at least one ink dot on at least one predetermined pixel location on each of the plurality of image scanlines is constructed and stored in a purge image memory accessible by the printing apparatus. Imperceptible purge image patterns are constructed having blue noise spatial frequency characteristics and optical density levels equal to or less than 0.01 OD above print medium base OD. A plurality of purge image data sets are constructed and stored for retrieval to adapt to a variety of conditions. Acceptable purge image data sets are determined using a purge performance image as a test pattern which is optically scanned or analyzed by user observation. The present invention further include numerous printing apparatus configured to implement the disclosed methods of maintaining ink jet printheads | 04-15-2010 |
| 20100283814 | MAGENTA INKJET INK AND AN INKJET INK SET CONTAINING SAME - The present invention pertains to a magenta inkjet ink and to an inkjet ink set for inkjet printing comprising the magenta ink and further comprising a yellow and cyan inkjet ink. The magenta ink and the other inks in the ink set are characterized by the presence of certain specific colorants. The magenta ink comprises a certain magenta dye defined in the specification and either one or both of Acid Red 52 and Acid Red 249. The yellow ink comprises Acid Yellow 79 and one or any combination of Direct Yellow 169, Direct Yellow 86 and Acid Orange 33. The cyan ink comprises Direct Blue 199. The magenta ink and the ink set are particularly advantageous for printing on plain and photo-glossy paper. | 11-11-2010 |
| 20110030580 | MAGENTA INKJET INK, AND PROCESS OF MAKING AND USING SAME - The present invention pertains to a magenta inkjet ink comprising a combination of pigments which provide favorable hue, chroma and optical density. The invention also pertains to a process of making the magenta ink and an inkjet ink set comprising this magenta ink. | 02-10-2011 |
