| Patents for B41J 2 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed (138,049) | 
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| 07/02/1991 | US5028939 Spatial light modulator system | 
| 07/02/1991 | US5028938 Printing head | 
| 07/02/1991 | US5028937 Perforated membranes for liquid contronlin acoustic ink printing | 
| 07/02/1991 | US5028936 Pulsed droplet deposition apparatus using unpoled crystalline shear mode actuator | 
| 07/02/1991 | US5028935 Wide format thermal recording device | 
| 07/02/1991 | US5028834 Device for magnifying displacement of piezoelectric element and method of producing same | 
| 07/02/1991 | US5028812 Multiplexer circuit | 
| 07/02/1991 | US5028514 Method of producing an etched base plate for an ink print head | 
| 07/02/1991 | US5027872 Syringe | 
| 07/02/1991 | CA1285605C Method and apparatus for non-impact printing | 
| 07/02/1991 | CA1285604C Imaging system utilizing an oscillating gradient index lens array | 
| 07/02/1991 | CA1285602C Electrostatic printer and imaging process utilizing heated air | 
| 07/02/1991 | CA1285601C Offset electrostatic printer and imaging process utilizing dehumidified air | 
| 07/02/1991 | CA1285600C Multifunction ionographic marking apparatus | 
| 07/02/1991 | CA1285427C Thin film vertical resistor devices for a thermal ink jet printhead and methods of manufacture | 
| 06/27/1991 | WO1991009490A2 Improved dot printer and method for grey level recording | 
| 06/27/1991 | WO1991009487A1 Method and apparatus for grey level recording using multiple addressability | 
| 06/27/1991 | WO1991009486A1 Non-contact optical print head for image writing apparatus | 
| 06/27/1991 | WO1991008905A1 Thermal printer | 
| 06/27/1991 | WO1991008904A1 Thermal printer | 
| 06/27/1991 | WO1991008903A1 Liquid-jet printer device | 
| 06/27/1991 | WO1991008902A1 Bidirectional hot melt ink jet printing | 
| 06/27/1991 | WO1991008901A1 User selectable drop charge synchronization for travelling wave-stimulated, continuous ink jet printers | 
| 06/27/1991 | WO1991008900A1 Improved drop charging method and system for continuous, ink jet printing | 
| 06/27/1991 | WO1991008899A1 Bubble jet print head having improved multiplex actuation construction | 
| 06/27/1991 | DE4038083A1 Imaging system for copier or laser printer - has electromagnetically controlled toner slits controlling transfer of toner to copy sheet | 
| 06/27/1991 | DE3942459A1 Modulated laser beam for developing tapes or films - uses opto-acoustic crystal modulator and scanning mirror | 
| 06/26/1991 | EP0434367A2 Thermal ink jet printheads | 
| 06/26/1991 | EP0434340A1 Thermal transfer printing | 
| 06/26/1991 | EP0433985A2 Spatial light modulator printer | 
| 06/26/1991 | EP0433984A2 Printer having separate paper handling and printing sections and method of printer operation | 
| 06/26/1991 | EP0433982A2 Spatial light modulator exposure unit and method of operation | 
| 06/26/1991 | EP0433981A2 Printing system exposure module alignment method and apparatus of manufacture | 
| 06/26/1991 | EP0433865A2 Thermal printing head and method of manufacturing the same | 
| 06/26/1991 | EP0433556A2 Process and apparatus for multi-color ink jet printing | 
| 06/26/1991 | EP0433497A1 Matrix print head and particularly serial matrix wire print head | 
| 06/26/1991 | EP0433280A1 Arrangement for printing devices for monitoring printing medium containers. | 
| 06/25/1991 | US5027289 Method and device for controlling a plotter | 
| 06/25/1991 | US5027221 Digital image recording system with preset control for selecting output formats based on the selected amount of pixel color and density data | 
| 06/25/1991 | US5027137 Drawing surface adjusting mechanism for use with scanning pattern drawing apparatus | 
| 06/25/1991 | US5027136 Method and apparatus for charged particle generation | 
| 06/25/1991 | US5027134 Non-clogging cap and service station for ink-jet printheads | 
| 06/25/1991 | US5026426 Ink compositions having improved waterfastness | 
| 06/25/1991 | US5025552 Method of manufacturing ion current recording head | 
| 06/22/1991 | CA2023022A1 Multi-color ink jet printing process and color pen for minimizing banding and color bleed and ink jet nozzle plate for use therewith | 
| 06/19/1991 | EP0433134A1 Ink jet printing device for tubes for storing biological liquids | 
| 06/19/1991 | EP0433093A2 Thermal head for thermal recording machine | 
| 06/19/1991 | EP0433063A1 Label printer | 
| 06/19/1991 | EP0432982A1 Recording head and substrate therefor, and recording apparatus utilizing the same | 
| 06/19/1991 | EP0432917A2 Electrophotographic apparatus | 
| 06/19/1991 | EP0432795A1 Active energy-ray-curable resin composition, ink jet head having ink path wall formed by use of the composition, process for preparing the head, and ink-jet apparatus provided with the head | 
| 06/18/1991 | US5025399 Method and apparatus for personalizing plastic cards | 
| 06/18/1991 | US5025325 Graphics scaling method for high resolution printers | 
| 06/18/1991 | US5025322 Method and apparatus for grey level recording using multiple addressability | 
| 06/18/1991 | US5025321 Facsimile machine using thin film electroluminescent device | 
| 06/18/1991 | US5025273 RF drive circuit for an ion projection printing head | 
| 06/18/1991 | US5025271 Thin film resistor type thermal ink pen using a form storage ink supply | 
| 06/18/1991 | US5025270 Recording apparatus coupled ink supply tubes | 
| 06/18/1991 | US5025268 Optical scanning apparatus and asymmetrical aspheric scanning lens | 
| 06/18/1991 | US5025267 Thermal print head termperature control | 
| 06/18/1991 | US5024544 Method and system for controlling mechanism sections of printing apparatus | 
| 06/18/1991 | US5024543 Impact dot print head | 
| 06/18/1991 | CA1284913C Heat-transfer type thermal recording device | 
| 06/13/1991 | WO1991008267A1 Pressure-sensitive adhesive tape, ink jet recording head, and storing method | 
| 06/13/1991 | WO1991008112A1 Printing head for ink-jet printer | 
| 06/13/1991 | WO1991008111A1 Conductor-path arrangement in printing heads with a circular ink-feed aperture | 
| 06/13/1991 | DE4039010A1 Printing method for dot matrix printer - involves conversion of original point pattern before printing to achieve faster printing | 
| 06/13/1991 | DE4035507A1 Cleaning of ink jet printer heads - using absorbent material on carrier part fed through printer via normal transport path | 
| 06/13/1991 | DE4035389A1 Modulation system for laser printer - has lighting level monitored and used to to provide correcting action to input | 
| 06/12/1991 | EP0432024A1 System and method of contrast control for a thermal printhead | 
| 06/12/1991 | EP0431924A2 Three-dimensional printing techniques | 
| 06/12/1991 | EP0431889A2 Scanning laser printer | 
| 06/12/1991 | EP0431876A2 Printer head | 
| 06/12/1991 | EP0431692A1 Stackable drop generator for an ink-jet printer | 
| 06/12/1991 | EP0431621A2 Thermal transfer recording apparatus | 
| 06/12/1991 | EP0431603A2 Optical unit for use in laser beam printer or the like | 
| 06/12/1991 | EP0431551A2 Resistive sheet transfer printing and electrode heads | 
| 06/12/1991 | EP0431338A2 Ink recording apparatus | 
| 06/12/1991 | EP0430941A1 Ink reservoir for ink-jet printing devices with several storage chambers | 
| 06/12/1991 | EP0328525B1 System enabling the electrical balancing of transducers arranged in inking heads | 
| 06/11/1991 | US5023700 Minutely patterned structure | 
| 06/11/1991 | US5023630 Ink jet recording head having a surface inclined toward the nozzle for acting on the ink | 
| 06/11/1991 | US5023629 Ink jet recording apparatus with a member for absorbing waste ink created by insertion and removal of an ink container | 
| 06/11/1991 | US5023628 Thermal head mounting/positioning assembly | 
| 06/11/1991 | US5023627 Printing head | 
| 06/11/1991 | US5023626 Printer capable of temperature compensation of the optical density of a printed image after a complete image is printed | 
| 06/11/1991 | US5023625 Ink flow control system and method for an ink jet printer | 
| 06/11/1991 | US5023448 Beam position sensor for a light beam scanner | 
| 06/11/1991 | US5023442 Apparatus for optically writing information | 
| 06/11/1991 | US5023129 Element as a receptor for nonimpact printing | 
| 06/11/1991 | US5023111 Maintaining ink pattern at abobe melting temperature for a short time to spread, quenching; wrinkle resistance | 
| 06/11/1991 | US5022771 Thermal printing apparatus and tape supply cartridge therefor | 
| 06/11/1991 | US5022629 Valve construction | 
| 06/11/1991 | CA1284743C Ink jet printing head, and industrial tracer thus equipped | 
| 06/05/1991 | EP0430758A2 Multi-functional laser printer | 
| 06/05/1991 | EP0430692A1 Method for making printheads | 
| 06/05/1991 | EP0430593A2 Method of cutting a silicon wafer by orientation dependent etching | 
| 06/05/1991 | EP0430546A2 Color image recording apparatus | 
| 06/05/1991 | EP0430451A2 Method for enhancing the uniformity and consistency of dot formation produced by colour ink jet printing | 
| 06/05/1991 | EP0430087A2 Nozzleless ink jet printer |