| Patents for B41M 3 - Printing processes to produce particular kinds of printed work, e.g. patterns (11,751) |
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| 01/21/1992 | US5082703 Thick ink ridge |
| 01/10/1992 | WO1992000852A1 Transfer printing process |
| 01/07/1992 | US5078428 Copy-proof sheet |
| 12/26/1991 | WO1991019614A1 Security of objects or documents |
| 12/26/1991 | WO1991019610A1 Method of manufacturing bright decorative sheet |
| 12/24/1991 | US5074597 Computerized method of generating film masters for embossing and printing color images |
| 12/24/1991 | US5074596 Currency paper, especially bank note, with a safety design and process for producing it |
| 12/24/1991 | US5074206 Halftone dots solid color |
| 12/21/1991 | WO1991019955A1 Method for producing an image on a substrate having the same spectral content with front and back illumination |
| 12/18/1991 | EP0461475A1 Method for transferring a pattern onto a substrate and use of a film |
| 12/17/1991 | CA1293152C Variable color print and method of making same |
| 12/11/1991 | EP0460270A1 Color changing print |
| 11/27/1991 | EP0470131A4 Secure image production. |
| 11/27/1991 | EP0458631A2 Signs with transparent substrate |
| 11/14/1991 | WO1991017054A1 Method, device and substance for forming picture |
| 11/14/1991 | WO1991017053A1 Process and device for applying colour decoration to a plastic substrate and decorated plastic substrate |
| 11/13/1991 | EP0455849A1 Method and apparatus for transfer of a colour design to a plastic substrate or a decorated plastic substrate |
| 11/13/1991 | EP0455750A1 Nonreplicable document and method for making same |
| 11/12/1991 | US5064221 Method for distinguishing printed originals from copies |
| 11/06/1991 | CN2088034U Heat colour-changing trade mark |
| 10/29/1991 | US5060981 Transparent overlay for protecting a document from tampering |
| 10/23/1991 | EP0452566A1 Method for making transparent thermal dye transfer images |
| 10/22/1991 | US5059245 Ink incorporating optically variable thin film flakes |
| 10/22/1991 | US5058925 Leach resistant ink for protecting documents from alteration and document protected thereby |
| 10/16/1991 | CN1055404A Production of heat sensitizing transfer printing paper and its transferring method |
| 10/15/1991 | US5056880 Holographic wallpaper |
| 10/08/1991 | US5055323 Applying curable base coat by rotogravure printing, printing colored design with high binder inks |
| 10/03/1991 | WO1991015805A1 A switchon-switchoff, multistate, interactive, antiphotocopying, antifraud and antifaxing system |
| 10/03/1991 | WO1991014571A1 Marker device with permanent indicia |
| 10/02/1991 | EP0449012A1 Decorative sheets and processes for producing them |
| 10/01/1991 | US5053788 Method and apparatus for thermal printing suitable for large printing area |
| 09/25/1991 | EP0447533A1 Treatment of hot melt ink images. |
| 09/25/1991 | CN1054808A Anti-imitation paper and manufacturing method thereof |
| 09/18/1991 | EP0446846A2 Thermally-transferable fluorescent europium complexes |
| 09/18/1991 | EP0446834A1 Receiver for thermally-transferable fluorescent europium complexes |
| 09/14/1991 | CA2037154A1 Receiver for thermally-transferable fluorescent europium complexes |
| 09/14/1991 | CA2036191A1 Thermally-transferable fluorescent europium complexes |
| 09/04/1991 | EP0444087A1 Imaging plastics articles. |
| 09/03/1991 | US5046166 Digital electrophotographic copying apparatus |
| 08/27/1991 | US5043188 Image-impressing device overlaps inwardly tapered ends to enhance illusion of continuity; constant width; straight edges |
| 08/22/1991 | WO1991012139A1 Imaging process |
| 08/21/1991 | EP0441935A1 Self-adhesive dry-transfer decal, process for its manufacture and method of use. |
| 08/14/1991 | CN1053769A Non-photographic method for patterning organic polymer films |
| 08/10/1991 | WO1991012372A1 Sheet for protected documents having high printability and high handling resistance |
| 08/07/1991 | EP0440554A1 Document authenticable by an authentication composition and process to realize said authentication |
| 08/06/1991 | US5037682 Light reflectivity |
| 08/06/1991 | US5037504 Transferring the image |
| 08/06/1991 | US5037447 Thermally transferring an image of heat-fusible ink containing a hydroxyl-containing substance and treating with a crosslinking polycyanate |
| 08/03/1991 | WO1991011492A1 Ink composition and components thereof |
| 08/03/1991 | WO1991011331A1 Anti-photographic/photocopy imaging process and product made by same |
| 08/03/1991 | CA2075063A1 Anti-photographic/photocopy imaging process and product made by same |
| 08/03/1991 | CA2075055A1 Ink composition and components thereof |
| 07/31/1991 | EP0438819A1 Photochromatic compound, a method for its preparation, and articles which contain it |
| 07/25/1991 | WO1991010571A1 Imaging process |
| 07/24/1991 | EP0437720A1 Method of transferring decoration from an embossing to a flat surface, and device for carrying out the method |
| 07/23/1991 | US5033773 Security for images formed by impact based systems |
| 07/16/1991 | US5032216 Non-photographic method for patterning organic polymer films |
| 07/16/1991 | US5032003 Optially variable surface pattern |
| 07/03/1991 | EP0435675A2 Phase change ink printed substrate and method of production thereof |
| 06/26/1991 | CN2079561U Manifolding bill capable of distinguishing true from false |
| 06/19/1991 | EP0432698A1 Jigsaw puzzle |
| 06/12/1991 | EP0432093A1 Highly reactive printing inks |
| 06/12/1991 | EP0431940A2 Improvements in and relating to the generation of sales records |
| 06/11/1991 | US5023111 Maintaining ink pattern at abobe melting temperature for a short time to spread, quenching; wrinkle resistance |
| 06/05/1991 | EP0429782A1 Arrangement for improving the falsification safety of a document of value |
| 06/04/1991 | US5021112 Process of multicolor printing by laser |
| 05/29/1991 | EP0428933A2 Materials coated with plate like pigmets |
| 05/29/1991 | EP0428828A2 Process for the detection of copies |
| 05/28/1991 | US5018767 Counterfeit protected document |
| 05/22/1991 | EP0427847A1 Security paper for producing documents |
| 05/21/1991 | US5017417 Excellent heat resistance, dimensional stability, formability, |
| 05/21/1991 | US5017226 Ink and method for the development of concealed images |
| 05/16/1991 | DE3937418A1 Finely structured plastic film recess printing plate prodn. - used for transfer printing matrix onto flat display panel |
| 05/02/1991 | WO1991005833A1 Fluorescent compounds and marking method using such compounds |
| 05/02/1991 | EP0425467A2 Process for creating magnetic impressions on sheetlike material |
| 04/30/1991 | US5011816 Ligands reacting with complex to form higher coordinate complex in situ; emitting red hue with ultraviolet radiation; security badges |
| 04/21/1991 | WO1991006118A1 Non-photographic method for patterning organic polymer films |
| 04/21/1991 | CA2069306A1 Non-photographic method for patterning organic polymer films |
| 04/18/1991 | WO1991004799A1 Treatment of hot melt ink images |
| 04/17/1991 | CN2075135U Improved mechanism for synchronism punching hole and forming of printer |
| 04/11/1991 | CA2282910A1 Money order imprinter |
| 04/09/1991 | US5006503 Thermally-transferable fluorescent europium complexes |
| 04/09/1991 | CA1282637C Rotary multicolor indirect printing machine for simultaneously recto-verso printing |
| 04/02/1991 | US5003915 Apparatus for printing and for forming a hologram on sheet material |
| 03/27/1991 | EP0419389A1 Device for printing and drying, particularly paper, corresponding ink and method for manufacturing the ink |
| 03/27/1991 | EP0419241A2 Transparent overlay for protecting a document from tampering |
| 03/21/1991 | WO1991003382A1 Heat transfer decorations with patterned metallization |
| 03/19/1991 | US5000090 Method for the continuous printing of a planar structure |
| 03/19/1991 | US5000089 Picture forming method, picture thereof and picture forming material |
| 03/12/1991 | US4998962 Printing method and printed product |
| 03/01/1991 | WO1991003381A1 Self-adhesive dry-transfer images, process for their manufacture and method of use |
| 03/01/1991 | CA2042364A1 Self-adhesive dry-transfer images, process for their manufacture and method of use |
| 02/27/1991 | EP0414015A2 Tissue web, method for preparing and use of same |
| 02/26/1991 | US4996537 Method of and apparatus for recording image |
| 02/26/1991 | US4996184 Sheet material for use in a method for non-impact printing, photocopying and like reprographic processes |
| 02/26/1991 | US4995927 Process for and product related to fabricating linked duplex film with trapped printing |
| 02/12/1991 | US4992347 Marking |
| 02/12/1991 | US4992304 Patterning, reorientation |
| 02/06/1991 | EP0411602A2 Object having visible pattern including invisible information printed thereon |
| 02/05/1991 | CA1279794C Printing |