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| Number | Title | Issue Date |
| 4709247 | High resolution, print/cartridge ink, jet printer A high resolution ink jet printing system includes a plurality of substantially identical print/cartridges each having an orifice plate comprising: (i) an array of orifices located in a precisely interspaced relation and (ii) a detent means precisely loca... | 11/24/1987 |
| 4709246 | Adjustable print/cartridge ink jet printer A system for printing with a plurality of removable print/cartridges includes a carriage constructed to traverse a linear print zone and removably support such print/cartridges. A plurality of referencing surfaces are located respectively on each of the c... | 11/24/1987 |
| 4703332 | Ink jet print head and printer The head is formed by a container (2) comprising a rigid frame (14, 16) of tapered shape, bearing the nozzle (4) at one end thereof. Fitted into the frame is a tubular membrane (47) for containing the ink, which is sealed at the other end of the frame by ... | 10/27/1987 |
| 4689642 | Ink-jet recording head with an elastic ink tank in a sealed casing held at a partial vacuum and having a breakable seal An ink-jet recording head comprises an ejection element for forming ink droplets, an elastic ink tank for holding therein ink to be supplied to said ejection element, a casing for containing said ink tank therein, and a communication section detachably mo... | 08/25/1987 |
| 4677447 | Ink jet printhead having a preloaded check valve A preloaded check valve disposed in a valve body between an ink reservoir and a printhead has a valve opening pressure or "cracking" pressure at least sufficient to overcome the hydrostatic pressure due to gravity of ink in the reservoir. This prevents de... | 06/30/1987 |
| 4673955 | Ink receptacle for ink jet printer An ink receptacle for an on-demand type ink jet printer in which an ink reservoir for storing ink which is to be ejected from an ink jet head is mounted on a carriage. A relatively thick flat housing which is made of non-flexible resin and open at one sur... | 06/16/1987 |
| 4630758 | Liquid tank A liquid tank structure for reducing hydrostatic pressure at an outlet thereof. The structure has a liquid container having an outlet at its lower portion, and a capillary member within the liquid container for exerting a force on a liquid therein in a di... | 12/23/1986 |
| 4630077 | Serial printhead ink supply The head (12) comprises a closed container (14) carrying two electrodes (36, 62) and a nozzle (18) and mounted removably on a carriage (13). In order for the ink (16) always to be held at atmospheric pressure, the container (14) comprises an expansible space d... | 12/16/1986 |
| 4628333 | Ink jet recording head and ink jet recorder An ink jet recording head has a nozzle for discharging ink and an ink chamber for supplying ink to the nozzle. A valve mechanism actuated by a vacuum force is arranged in the ink chamber in which an air layer is created as the ink is supplied into the ink... | 12/09/1986 |
| 4620202 | Ink jet printer of the ink-on-demand type An ink-on-demand type ink jet printer including a printer head and an ink container. The printer head includes nozzles for ejecting ink droplets, pressure chambers for pressurizing ink therein and ink passageways for supplying ink from the ink container t... | 10/28/1986 |
| 4600927 | Method of preserving ink jet recording head A method of preserving an ink jet recording head comprises an ejecting element for flying ink droplets, an elastic ink tank portion containing an ink to be fed to the ejecting element, a casing housing the ink tank portion, and the feature is composed of ... | 07/15/1986 |
| 4599625 | Ink tank frangible lever for pressure co-action with a ink bag An ink tank comprises a deformable ink bag for storing ink provided in a case, wherein a low strength portion is formed in a member constituting said case, and a lever for pressing said ink bag is formed by breaking said low strength portion. An ink-jet r... | 07/08/1986 |
| 4593296 | Ink jet printer with gas evacuating arrangement An ink jet printer has a chamber for the evacuation of gases which form during the printing operation, the chamber having an associated Venturi pump acting as a vacuum source. The electrical energization circuit for the printer includes an adjustment memb... | 06/03/1986 |
| 4589000 | Ink jet printer of the ink-on-demand type An ink-on-demand type ink jet printer includes an ink jet head assembly having a printer head and an ink container integrally joined to the printer head. The printer head includes a pressure chamber and ink supply and ejection flow passages communicating ... | 05/13/1986 |
| 4580148 | Thermal ink jet printer with droplet ejection by bubble collapse A thermal ink jet printhead ejects ink droplets on demand by utilizing the conservation of momentum of collapsing bubbles in a layer of liquid ink having a predetermined thickness. The printhead has an ink containing chamber with an array of individually ... | 04/01/1986 |
| 4571599 | Ink cartridge for an ink jet printer A plurality of disposable, individually replaceable ink supply cartridges are mountable on the carriage of an ink jet printer. Each cartridge has a thermal printhead fixedly attached thereto. A constant slightly negative pressure is maintained at the nozz... | 02/18/1986 |
| 4549243 | Spraying apparatus Electrostatic spraying apparatus e.g. for graphic work, having a hand or finger held body carrying a nozzle to which the atomizing potential is applied from a high voltage generator. The nozzle is of the non-drip type, e.g. a capillary bore or a felt- or ... | 10/22/1985 |
| 4509062 | Ink reservoir with essentially constant negative back pressure An ink reservoir which incorporates a negative back pressure source coupled to a membrane wall of the reservoir to prevent ink leakage from a reservoir orifice is disclosed. The back pressure is created by either a linear or nonlinear spring which can be ... | 04/02/1985 |
| 4503442 | Ink jet printing head and serial printer The printing head (12) comprises an insulating container (14) for conductive ink (16) which is expelled through a fine nozzle (18) when a voltage pulse is applied between an electrode (56, 57, 40) and a counter-electrode (22). Capillary passages (51, 50) ... | 03/05/1985 |
| 4503443 | Serial ink jet printing head The head is provided for a conducting ink and comprises a closed container (14) carrying two electrodes and a nozzle (18). The head is removably mounted on a carriage (13) and is replaced when the ink is exhausted. The container (14) is divided into two caviti... | 03/05/1985 |
| 4500895 | Disposable ink jet head A thermal ink jet head is disclosed in which the jetting resistors, fluid interconnections, ink reservoir, electrical connections, and jetting orifices are fully integrated to provide an inexpensive, disposable jetting head. The entire hydraulic ink syste... | 02/19/1985 |
| 4484827 | Ink cartridge A disposable ink cartridge for use in automatic marking systems. The ink cartridge is composed of a housing which contains a collapsible elastomeric ink reservoir having an open end secured to a plurality of barrier disks. The barrier disks are apertured ... | 11/27/1984 |
| 4471364 | Ramp style constant head ink jet cartridge A replaceable cartridge for use in an electrostatic ink jet printer includes not only a sealed ink supply, but the ink jet itself. The cartridge forms part of a printer head which is mounted to move transversely back and forth across the width of a record... | 09/11/1984 |
| 4456916 | Ink jet cartridge with hydrostatic controller A disposable electrostatic ink jet cartridge forms part of a printer head which is mounted to move transversely back and forth across the width of a recording paper. The cartridge includes an ink jet nozzle and multicompartment ink reservoir, one compartm... | 06/26/1984 |
| 4436439 | Small printer A small printer for printing characters on a printing medium especially adapted for use in a portable electronic calculator. The printer includes a frame having a carriage slidably mounted thereon for lateral displacement across the printing medium. An in... | 03/13/1984 |
| 4434430 | Ink jet printer head An ink jet head for a printer for ejecting liquid ink as droplets onto a recording medium, comprises a substrate having a nozzle, pressure chamber and passageway which are defined in a surface thereof, and a vibration plate supporting thereon a piezoelect... | 02/28/1984 |
| 4429320 | Ink jet recording apparatus An ink jet type recording apparatus is disclosed which comprises a carriage slide movable along a shaft, a recording head for jetting recording liquid in response to an electric signal, a subsidiary container for supplying the recording liquid to the reco... | 01/31/1984 |
| 4419677 | Ink jet recording apparatus An ink jet recording apparatus has a recording liquid container storing recording liquid therein, a recording head supplied with the recording liquid from the container and a carriage on which the recording head and the recording liquid container are moun... | 12/06/1983 |
| 4412232 | Ink jet printer An ink jet printer includes a print head having a plurality of piezoelectric driving elements selectively energizable to cause ejection of droplets of ink through nozzles in a nozzle plate. Ink is supplied to the print head from an ink reservoir which is ... | 10/25/1983 |
| 4376283 | Method and apparatus for using a disposable ink jet assembly in a facsimile system and the like An ink jet apparatus is disclosed which comprises a disposable ink reservoir and pumps for providing priming and purging to the ink jet and for providing subatmospheric pressure in the vicinity of the jet to collect any debris from the orifice of the jet ... | 03/08/1983 |
| 4359744 | Ink jet printer with peristaltic pump Ink jet apparatus of the impulse type employs one or more peristaltic pumps. The pumps comprise a flexible tube extending between the ink reservoir and the jet. One tube is constricted so as to advance ink from the reservoir to the jet. Another tube is co... | 11/16/1982 |
| 4329698 | Disposable cartridge for ink drop printer A convenience package for drop-on-demand ink drop recording devices which includes drop generating means for projecting ink droplets to a recording medium, filter means, and the ink supply, all of which are quickly interchangeable, and intended for dispos... | 05/11/1982 |
| 4306245 | Liquid jet device with cleaning protective means A liquid jet recording device is provided with a cleaning protective means for cleaning and protecting the orifice. This means is provided at a reset position lying at one end of the scanning shaft of the device.... | 12/15/1981 |
| 4131899 | Droplet generator for an ink jet printer An ink jet printer having a piezoelectric capillary injector-type droplet generator. The droplet generator includes an integral body having formed within it a single chamber that receives and holds ink under capillary action. A nozzle defined by one or mo... | 12/26/1978 |
| 4095237 | Ink jet printing head An ink supply to a movable printing head in which the liquid reservoir follows the printing head in its movement along a recording medium and communicates with the liquid pumping chambers by means of at least one channel located in the printing head. In o... | 06/13/1978 |
| 4025928 | Unitary ink jet and reservoir An impulse ink jet mounted in an ink reservoir so as to be a self-contained writing device for X-Y and strip chart process recorders and table top graphic recorders, with the jet being associated with a length of energy absorbing conduit coiled within the... | 05/24/1977 |
| 3967286 | Ink supply arrangement for ink jet printers An ink reservoir and supply arrangement associated with a printing head of an ink jet printer having means for filling the supply device automatically. The device is arranged to follow the movements of the printing head along an adjacent recording medium.... | 06/29/1976 |
| 3953862 | Printing head device for an ink jet printer A printing head for an ink jet printer in which a liquid reservoir is operatively associated therewith. The liquid reservoir is provided with an air inlet opening having a filter which permits the passage of air but prevents liquid flow thereby preventing... | 04/27/1976 |
