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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7357013 | Marking device for encoding metallic workpieces with two-dimensional matrix codes A marking device for encoding metallic workpieces with two-dimensional matrix codes includes a striking tool for forming the code recesses, driven by an electromagnetic device. The driving movement is performed against the force of a return device. A positioning dev... | 04/15/2008 |
| 7168364 | Method and apparatus for marking workpieces A method and an apparatus are provided for marking a sheet-shaped workpiece using a marking tool. The marking tool is mounted in a punch holder of a punch press and a counter-support is fixed in place on a side opposite of a marking surface of the workpiece to be ma... | 01/30/2007 |
| 7050195 | Printed medium data storage A method of, and apparatus for, printing information on a hardcopy medium includes the acceptance of data representing a first information and the acceptance of data representing a second information. Second information is printed in regions on the medium where firs... | 05/23/2006 |
| 7038703 | Label printer with label edge detector A label printer with a label edge sensor having a shortened measurement path through the supporting frame of the label printer. Linear and or angular movement of the print head as it encounters label edges is detected by sensors coupled to the printer frame. The sen... | 05/02/2006 |
| 6910752 | Ink jet printing apparatus and method for adjusting driving timing of ink ejection The present invention provides an ink jet printing apparatus and method that can print a high-grade image without being affected by a variation in moving speed of a printing head. To accomplish this, an encoder is used which outputs a pulse each time a printing head... | 06/28/2005 |
| 6835011 | Impact dot printing head control apparatus With an impact dot printing head control apparatus according to the invention, the drive control of respective wires is implemented on the basis of a normal fire and a pre-fire by generating the normal fire for driving the respective wires of the impact dot printing... | 12/28/2004 |
| 6801335 | Method of controlling impact printer noise A method of controlling noise in an impact printer that modulates the input pulse to the power amplifier of the printer. The resulting current waveform is then applied to the print wire solenoids. The final shape of the force input to the platen reduces or spreads t... | 10/05/2004 |
| 6695495 | Constant density printer system An ink density closed loop control system for an ink ribbon of an impact printer having a reservoir roller formed of an ink absorbent material with at least one or more channels within the reservoir roller fluidly connected to a pump and ink supply. A tra... | 02/24/2004 |
| 6641314 | Color thermal printer having tension roller A color thermal printer has a feed roller set, a thermal head, and a tension roller set that are serially arranged along a transporting path. The feed roller set and the tension roller set are rotated by respectively a stepping motor and a DC motor. The s... | 11/04/2003 |
| 6543946 | Combination printer A combination printer is described. The combination printer includes a thermal head and an ink printing head, such as a thermal transfer printing head. The thermal head thermally prints on thermal paper by heating. The thermal transfer printing head print... | 04/08/2003 |
| 6540417 | Stencil making apparatus A stencil making apparatus thermo-sensitively perforates a stencil sheet by a thermal print head. The apparatus includes a controlling device for driving contiguous N pieces of heat generating elements of the thermal print head while shifting respectively... | 04/01/2003 |
| 6530632 | Method and apparatus for envelope printing with an ink jet printer An inkjet printer having an envelope comer printing apparatus that prints print data on the comer of an envelope independently from the printing function performed by the printer with respect to the sheet media printed by the printer. The printer housing ... | 03/11/2003 |
| 6254291 | Dot-impact printing head control apparatus A printing head control apparatus 10 is used for a dot-impact printer in which a dot is formed on a paper set on a platen via an ink ribbon 16 with an impact force applied by a pin 18. The printing head control apparatus 10 comprises: a dot classifier for... | 07/03/2001 |
| 6027265 | Printer having improved print head mechanism and method A printer having a platen for supporting a binder strip to be printed, a ribbon positioned adjacent the platen and print head mechanism having print pins, driver coils associated with each print pin and a heating element for heating the print pins. A driv... | 02/22/2000 |
| 5829895 | Method for printing an image indicative of value such as a postal indicia A method includes printing a dot-matrix pattern of a first one of an image on a recording medium; and printing a dot matrix pattern of a second one of the image on the recording medium which second one of the image is interlaced with the first one of the ... | 11/03/1998 |
| 5816720 | Printer mechanism for automated teller machine A statement printer of an automated teller machine includes a top plate (16) pivotally mounted on a pair of spaced side walls (12). The top plate supports a ribbon cartridge (18) thereon. The cartridge includes a pair of downward extending projections (38... | 10/06/1998 |
| 5806421 | Method and apparatus for securely printing a machine detectable postal indicia image A method for printing a postal indicia on a mailpiece includes moving a printing mechanism and the mailpiece relative to each other during a plurality of passes; and printing with the printing mechanism at least a corresponding portion of the postal indic... | 09/15/1998 |
| 5674014 | Printhead driver circuit for line printers A printhead drive circuit to be utilized in impact printers is disclosed. In accordance with a preferred embodiment of the present invention, the printhead driver circuit includes a first switch, a set of second switches, and a decoupling circuit. The fir... | 10/07/1997 |
| 5518323 | Method of adjusting a head gap for a wire dot impact printer According to a method of adjusting a head gap, a wire dot head is set to a predetermined position of a reference head gap; a printing pattern for detecting printing time is printed by a plurality of pins; reference printing times of respective pins are de... | 05/21/1996 |
| 5474391 | Print gap setting in an impact printer An impact printer having a print head, the print head having a movable armature, a printing wire fixed to the armature, and sensor for detecting movement of the armature. The position of the armature is monitored based on an output of the sensor. A home s... | 12/12/1995 |
| 5439301 | Printer controller and method thereof for a printhead assembly A print controller apparatus and method thereof for controlling the movement of a printhead assembly including a carriage, printhead, and head pins. First and second moving times of the carriage moving from first and second predetermined distances and a d... | 08/08/1995 |
| 5439302 | Self-adjusting controller for dot impact printer A controller for a dot impact printer has capacitance sensors for sensing the motion of the dot wires in the print head, and a non-volatile, rewritable memory for storing self-adjustment data relating to dot-wire characteristics. A processor controls the ... | 08/08/1995 |
| 5435656 | Back stop structure for matrix pin print head A matrix pin print head is set to a fixed distance (17) relative to a print counter support (2), where a recording substrate (3) rests on the print counter support (2). An ink ribbon (4) is guided in front of the print pins (5) between the matrix pin prin... | 07/25/1995 |
| 5330277 | Drive system for wire dot head A drive system for a wire dot head is provided with sensors for detecting displacements of corresponding print wires. Each sensor outputs a movement initiation timing signal and an impact timing signal for the corresponding print wire. An electric current... | 07/19/1994 |
| 5302035 | Method of driving wire-dot print head To suppress a secondary bound of a print wire of a dot matrix printer which may occur after a single dot or continuous dots are printed and also to prevent both density variation of printed characters and printing ghost from occurring, a braking pulse is ... | 04/12/1994 |
| 5295750 | Wire-dot impact printer In a wire-dot impact printer having a capacitance detector for detecting a displacement of each armature by a sensor electrode arranged opposite the armature, a space is formed between each sensor electrode and its associated armature, and a shield patter... | 03/22/1994 |
| 5071268 | Wire-dot print head driving apparatus having sensing coils In a driving apparatus for a wire-dot print head having electromagnets for driving print wires, each electromagnet comprising a core and a coil, sensing coils are provided in association with the respective electromagnets and provided to interlink the mag... | 12/10/1991 |
| 5039238 | Dot-matrix printer with impact force determination In a dot-matrix printer including a wire-dot print head having print wires which print dots by impact on a printing medium, and a sensor for sensing the position of the print wires and generating signals indicating the position of the print wires, a param... | 08/13/1991 |
| 5039237 | Dot matrix print head drive method In a dot matrix print head drive method for controlling head drive signals for driving dot pins in accordance with print pattern signals, a correction factor is set specifically to each dot pin; and the length of time for which the print pattern signals a... | 08/13/1991 |
| 5030020 | Wire-dot impact printer having means for detecting displacement of individual print wires A wire-dot impact printer includes a wire-dot print head having a plurality of print wires disposed therein. Each of the plurality of print wires has a distal end, and each is displaced in response to a drive signal so as to strike a printing medium with ... | 07/09/1991 |
| 5017027 | Impact printer An impact printer having a platen, an impact printing member such as a printing wire, a driver such as a driving coil for driving the impact member, a controller for controlling the driver and a temperature detector. Before printing data is printed, the t... | 05/21/1991 |
| 4940343 | Wire-dot print head driving apparatus A driving apparatus for a wire-dot print head in a wire-dot impact printer has a sensor mounted in the print head to detect the motion of the print wires, enabling each print wire to be driven for the optimum time for each dot. Beneficial results include ... | 07/10/1990 |
| 4936210 | Arrangement of printing pins in a serial type dot printer In the present invention there is disclosed an improved serial type dot printer. According to the printer, the mutual magnetic interference between the magnetic circuits that are provided for each of the printing hammers to act as their respective driving... | 06/26/1990 |
| 4877342 | Method of moving print elements in printheads and a printhead with moving mechanism for print elements The invention relates to a method in printheads (1) with a plurality of print elements (4) arranged movable in relation to each other and a moving mechanism (7, 9, 11, 12, 14) with magnetic field-responsive forces for moving selectable print elements to p... | 10/31/1989 |
| 4812062 | Print hammer with flux detection for print pressure control A recording apparatus in which recording on a recording medium is perfomed by impacting against the recording medium. This recording apparatus has a recording unit which is constututed by a recording element supported so as to be reciprocatively movable r... | 03/14/1989 |
| 4810113 | Print head driving system A print head driving system for driving a print head having a plurality of print wire controlling magnetic circuits and a plurality of print wires respectively operatively associated with the print wire controlling magnetic circuits regulates the flight s... | 03/07/1989 |
| 4806031 | Uniform print density and registration in an impact printer Commencing with the first print hammer(s) "out", or actuated, on each print line the hammer drive current is boosted 10% for a period, ranging from 25%=650 microseconds for single part forms to 50% for multi-part forms, of the total print hammer flight ti... | 02/21/1989 |
| 4743821 | Pulse-width-modulating feedback control of electromagnetic actuators The trajectory of an electromagnetic actuator is adjusted by pulse-width-modulating feedback control of the waveform which energizes the coil. As applied to actuators for impact printing, the objectives of the control scheme are to regulate the armature's... | 05/10/1988 |
| 4741636 | Dot drive circuit of wire dot type printer A dot drive circuit for a wire dot type printer including dot pins of a print head different in gaps with respect to a platen sets dot drive time intervals for each dot pin or for each dot pin group in accordance with the size of the gap.... | 05/03/1988 |
| 4579467 | Dot printer with predriving force for removing particles from dot pins A dot printer is adapted to make test printing by driving dot pins (161 to 167) included in a print head (16) before the first character is printed out. More specifically, a central processing unit (1) makes evaluation of the value of a period of approxim... | 04/01/1986 |
