Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7131774 | Self-aligning print head mechanism and related printer and method A printer for printing between a print roller and a print head having a print head alignment system is provided. The print head alignment system includes a print roller assembly, a print head support assembly and an actuating assembly. The print roller assembly incl... | 11/07/2006 |
| 7083245 | Recording apparatus A reliable detection of optically detecting the type of recording media is achieved. A part of a support member for supporting an optical sensor is pushed against the surface of a sheet by a spring so as to maintain the gap between the sensor and the sheet surface. ... | 08/01/2006 |
| 6886897 | Apparatus to adjust the head gap in ink-jet printers A head gap adjusting apparatus used with an ink-jet printer, in which there are provided a pair of carrier shaft lifting parts disposed upon a chassis to adjust the head gap between a paper and a print head by converting a force of horizontal motion to a force of ve... | 05/03/2005 |
| 6669382 | Printer and method of controlling the same A printer including a printing head for performing printing while moving over a printing medium, a gap roller capable of rolling along a direction of moving of the printing head, and a platen bar placed so as to face the printing head and the gap roller. ... | 12/30/2003 |
| 6666600 | Printer having detection and correction of tilt using skew correction There is provided an apparatus which can make a correction such that paper will not be fed in a tilted state without a need for any special mechanism. A moving mechanism C1 is driven to move a printing head 41 toward a platen and to urge the printing head... | 12/23/2003 |
| 6561606 | Ink jet printing apparatus, image reading apparatus, ink jet printing method and image reading method There are provided an ink jet printing apparatus, an image reading apparatus, an ink jet printing method and an image reading method capable of saving electric power, reducing noise and improving the reliability by specifying a timing of the adjustment of... | 05/13/2003 |
| 6502058 | Device for measuring thickness of a form document in an impact printer A thickness of a form document loaded in a pin feed tractor is measured to appropriately adjust a gap between a platen and a print head. A projection formed on a pressing block is linearly moved toward and away from the form document supported on a tracto... | 12/31/2002 |
| 5445458 | Automatic platen gap adjusting apparatus An automatic platen gap adjusting apparatus is provided with (i) a stepping motor for moving a carriage provided with a recording head in the direction of a platen, (ii) a rotary encoder for producing a plurality of pulse signals proportional to the rotat... | 08/29/1995 |
| 5360276 | Printing device with adjustable printing head gap In a printing device having an abutment (10) intended for supporting a recording medium (52), a print head (32) which is movable relative to the abutment (10) in the direction of the lines, an actuating drive (28, 26, 24) for setting the print head distan... | 11/01/1994 |
| 5257867 | Printer with print gap control A printer having an adjusting apparatus for adjusting a head gap between a print head and a print sheet supported on a platen, is disclosed. In such printer, at first, a carriage 1 mounting the print head 8 thereon is advanced to the print sheet 6 by ecce... | 11/02/1993 |
| 5193918 | Print-head positioning system having a paper sensor A printer with a print-head distance-setting device for adjusting the distance (1) between print head (2) and print-material counter support (3) for recording-material carriers (4) of unequal thickness, resting on the print-material counter support (3), i... | 03/16/1993 |
| 5149210 | Apparatus for recording and/or reading information A recording and/or reading head has a recording and/or read nose and is movably mounted. The head is preloaded against a record carrier with first and second preload values. A sensor device senses and maintains the distance between the record carrier and ... | 09/22/1992 |
| 5135316 | Automatic print head position adjusting mechanism An apparatus adapted to adjust an interval or gap between a print head carried by a carrier unit and a printing paper disposed on a platen by sensing a paper thickness to obtain the optimum position of the print head without stepping-out a motor, includin... | 08/04/1992 |
| 4818128 | Impact printer capable of being equipped with an auto sheet feeder An impact printer which can be equipped with an auto sheet feeder comprises printing means, driving means for driving the printing means and controlling means for controlling the driving means so as to reduce the printing strength of the printing means wh... | 04/04/1989 |
| 4797017 | Wire dot matrix printer capable of printing letters on a plurality of superposed sheets of paper Disclosed is a wire dot matrix printer capable of printing letters on a plurality of superposed sheets of paper, in which there is provided a drive current adjuster for continuously increasing and decreasing the drive current of solenoids which move print... | 01/10/1989 |
| 4657415 | Mechanism for adjusting the spacing between the print head and platen of a printer A shoe in the form of a cylindrical screw is rotatably threaded through a carriage supporting a print head and has one end held slidably against a guide rail parallel to a main guide shaft on which the carriage is movable parallel to the platen of an impa... | 04/14/1987 |
| 4655625 | Single station printer for printing on plural record media A slip/receipt printer is provided with a separator bracket attached at one side thereof to a forms compensating arm in cantilever manner. The separator bracket is biased by magnetic means toward the arm to provide a precise path for receipt paper. A slip... | 04/07/1987 |
| 4652153 | Wire dot-matrix printer A wire dot-matrix printer has a print head which can be moved toward and away from a sheet or sheets of print paper by means of a stepping motor, the print head being movable from an initial position. The wire dot-matrix printer also includes a detector f... | 03/24/1987 |
| 4609294 | Adjustment of print position The platen roller in a matrix printer is mounted to the printer case so that stop plates of the mount define a representation of the disposition of the roller. A frame is provided to hold a guide rod on which rides a carriage, and the print head is secure... | 09/02/1986 |
| 4472071 | Apparatus for adjusting the distance between the print head and platen This invention involves methods and apparatus relating to the assembly and structure of a dot matrix print head. The invention includes a single unit, coil assembly of a bobbin, coil, and clapper which can be removeably placed as a unit among fixed pole p... | 09/18/1984 |
| 4426165 | Printing device with integrated print head fastening and adjustment For use in a printing machine, such as an office typewriter, employing a replaceable printing head to be mounted on a carriage, there is provided a printing head fastening arrangement for releasably clamping the printing head to the carriage and permittin... | 01/17/1984 |
| 4390292 | Means and method for compensating for print medium thickness in line printers Means are disclosed for use in a line printer having a print head on a carriage traversing parallel to a platen for printing characters through an inked ribbon onto a print medium drawn between the ribbon and platen. The inventive means provide for adjust... | 06/28/1983 |
| 4365900 | Printing plane adjusting mechanism Disclosed is a printing plane adjusting mechanism for a typewriter or similar machine wherein a paper handling system including a platen defining the printing plane is finely as well as coarsely adjustable by a single lever relative to a printing element ... | 12/28/1982 |
| 4286888 | Bi-directional belt drive, print head mounting means and printing plane adjustment means for serial printers A bidirectional belt-drive for printers and the like comprising a carriage assembly movable across a paper web and supporting a print head mounting bracket. A belt has upper and lower runs extending through guide passageways in the carriage assembly. Inde... | 09/01/1981 |
| 4279199 | Print head image generator for printer subsystem A printer has print wires arranged in a plurality of print head groups, each group comprising a predetermined number of print wires, the individual print wire groups being arranged according to a slanted serrated wire pattern. A print head image generator... | 07/21/1981 |
| 4278356 | Daisy wheel printer carrier A printer carrier for carrying both a selection motor and a carrier for print element and ribbon cartridges. The printer carrier is made up of a frame, adjustable rails, and a leadscrew follower, and is structured to be mounted on escapement rails. The ad... | 07/14/1981 |
| 4278020 | Print wire actuator block assembly for printers A print wire actuator block assembly is described that accommodates a plurality of print wire actuators and print wires, the print wire actuators and print wires being arranged in two rows, the entire assembly forming a compact structure. The print wire a... | 07/14/1981 |
| 4261039 | Microprocessor controlled positioning system A microprocessor controlled printer includes a forms feed assembly, a dot matrix print assembly, a ribbon drive assembly and a number of emitter assemblies associated with the foregoing to provide positional information during operation of the printer whi... | 04/07/1981 |
| 4243331 | Apparatus for adjusting a carriage relative to a platen Apparatus for adjusting a carriage assembly in a printing relationship to a platen. The carriage supports the printing mechanism including a print element. The distance between the carriage with the print element and the platen is adjusted by the adjustme... | 01/06/1981 |
| 4233895 | Printer comprising a printing head which is adjustable by means of a motor A printer comprising a carriage which is displaceable along a record carrier, parallel to the line direction, and on which a printing head is mounted which is displaceable transversely of the line direction by means of an electric motor. The electric moto... | 11/18/1980 |
| 4222673 | Print head carriage assembly for serial printers A print head carriage assembly for a serial printer apparatus, the carriage including a platform having two parallel channels extending laterally through the frame member for receiving self-aligning bearings and carriage guide rails; a central seat within... | 09/16/1980 |
| 4178106 | Print gap adjust mechanism for printers The gap between the print head and the printing surface or platen in a printer is extremely critical in certain types of printers. Where printers are required to accept print media of various thickness (single or multipart paper), an adjust mechanism is r... | 12/11/1979 |
| 4173927 | Printing device A printing device in which a roll having a plurality of characters disposed thereon is displaceable with respect to at least one printing hammer. The printing hammer cooperates with a coil which, when excited, generates a field which by cooperation with a... | 11/13/1979 |
| 4172671 | High speed printer having a pneumatically actuated printing head A high speed printing device having a printing head provided with printing needles. The printing device is mounted on a movable carriage which is adapted to move adjacent to a recording medium. The printing head is pneumatically operated and also is movab... | 10/30/1979 |
| 4134692 | High speed impact printer A type wheel comprises a rotary hub, a plurality of resilient, circumferentially spaced arms extending radially outwardly from the hub and a plurality of type elements provided at the end portions of the respective arms. The type wheel is rotated until th... | 01/16/1979 |
| 4086997 | Adjustable support for print head assembly A printer is disclosed which has an adjustable support for the print head assembly, either or both for changing the spacing between the print head and paper supporting surface to accommodate multiple sheets of paper and to facilitate paper and ribbon chan... | 05/02/1978 |
| 4023662 | Arrangement for adjusting the spacing between a print head and a platen A device for adjusting the distance of a printing head from a platen for an office machine comprises a printing head movable parallel to a platen along two guides. One of these guides is fixed to the frame of the machine; the other is transversely shiftab... | 05/17/1977 |
| 3981235 | Automatic print gap adjustment arrangement The mechanism herein relates to the automatic positioning of the print mechanism with respect to the forms and ribbon in a printer assembly. The automatic adjustment takes place for varying thicknesses of the forms, which is a function of the number of co... | 09/21/1976 |
| 3960256 | Adjustable carriage apparatus Apparatus for a matrix printer by which the distance between the printhead and the paper being printed upon may be adjusted. The printhead is secured to a carriage whose position may be adjusted with respect to the paper by rotating a pair of bearings tha... | 06/01/1976 |
| 3941051 | Printer system A dot matrix printer system utilizes a reciprocating shuttle having a plurality of hammer elements and externally energized hammer controls mounted with the hammers on the shuttle. Each hammer scans a number of dot printing positions within a dot matrix l... | 03/02/1976 |
