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| US4031561 | 3. Mai 1976 | 21. Juni 1977 | The Mead Corporation | Startup apparatus and method for jet drop recording with relatively movable charge plate and orifice plate |
| US4045802 | 27. Juli 1976 | 30. Aug. 1977 | Ricoh Company, Ltd. | Ink ejection printing apparatus comprising automatically actuated ejection orifice cap |
| US4097874 | 3. Mai 1977 | 27. Juni 1978 | Mesne Koh-I-Noor Rapidograph, Inc. | Blocking assembly for an automatic drafting device |
| US4106031 | 25. März 1977 | 8. Aug. 1978 | Koh-I-Noor Rapidograph, Inc. | Automatic drafting device |
| US4112435 | 16. Febr. 1977 | 5. Sept. 1978 | Siemens Aktiengesellschaft | Protective and cleaning device for writing heads in ink recorder devices |
| US4144537 | 2. Juni 1977 | 13. März 1979 | Konishiroku Photo Industry Co., Ltd. | Method and apparatus for capping a nozzle of ink jet recording device |
| US4170016 | 12. Dez. 1977 | 2. Okt. 1979 | Gould Inc. | Priming apparatus for liquid ink writing instruments |
| US4173020 | 7. Juli 1978 | 30. Okt. 1979 | Rotring-Werke Riepe KG
Aristo-Werke Dennert & Pape KG | Automatic drafting instrument with stylographic pen |
| US4228442 | 24. Jan. 1979 | 14. Okt. 1980 | NCR Corporation | Means for preventing drying of ink at nozzles of print heads |
| US4266231 | 1. Nov. 1979 | 5. Mai 1981 | International Business Machines Corp. | Ink jet with retractable electrode and secondary ink catcher |
| US4296418 | 23. Mai 1980 | 20. Okt. 1981 | Ricoh Company, Ltd. | Ink jet printing apparatus with reverse solvent flushing means |
| US4336547 | 11. Sept. 1980 | 22. Juni 1982 | Sharp Kabushiki Kaisha | Pump synchronization in an ink jet system printer |
| US4369454 | 28. Dez. 1979 | 18. Jan. 1983 | Canon Kabushiki Kaisha | Recording apparatus |
| US4380770 | 20. Nov. 1980 | 19. Apr. 1983 | Epson Corporation
Kabushiki Kaisha Suwa Seikosha | Ink jet printer |
| US4450454 | 19. Nov. 1981 | 22. Mai 1984 | Epson Corporation
Kabushiki Kaisha Suwa Seikosha | Small size ink jet printer |
| US4999643 | 27. Febr. 1990 | 12. März 1991 | Canon Kabushiki Kaisha | Discharge recovery device and apparatus having suction means and vent means communicating with capping means |
| US5005024 | 2. März 1990 | 2. Apr. 1991 | Canon Kabushiki Kaisha | Ink jet recording apparatus which supplies repellent agent to liquid discharge port surface and method thereof |
| US5489928 | 25. Okt. 1993 | 6. Febr. 1996 | Canon Kabushiki Kaisha | Liquid-repellent application process for a liquid ejection recording apparatus |
| US5521623 | 22. Okt. 1992 | 28. Mai 1996 | Nur Industries (1987) Ltd. | Printing method and apparatus |
| US5661509 | 15. März 1996 | 26. Aug. 1997 | Nur Advanced Technologies Ltd. | Apparatus and process for printing large graphics |
