Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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 |
| 7064859 | Method, system, program, and data structure for producing a look-up table to enhance print quality Disclosed is a method, system, and program for generating a table for enhancing the print quality of input raster pel data. An output value is generated for different patterns of pel data. Each output value indicates a sub-pulse width power to charge a sub-pel regio... | 06/20/2006 |
| 6975427 | Method, system, and program for using look-up tables to filter raster data Disclosed is a method, system, and program for modifying raster pel data according to different types of filtering operations. At least two tables are maintained in memory. At least two of the tables provide output pel values for at least two different types of filt... | 12/13/2005 |
| 6975428 | Method, system, and program for reducing toner usage in print output Disclosed is a method, system, and program for reducing toner in an image comprised of raster pel data. A determination is made of pels surrounding subject pels. For each subject pel, a sub-pulse width power is generated to charge a sub-pel region within the subject... | 12/13/2005 |
| 5876132 | Method and system for high character density printing utilizing low pel density characters A method and system for printing a high density sequence of characters of M characters per inch from a predetermined character set. A print head having multiple print wires or pins is utilized to print a matrix of "dots" at a selected pel density, prefera... | 03/02/1999 |
| 5746524 | Printing control apparatus for spacing 1-byte and 2-byte characters In a printer that normally prints 1-byte characters as well as 2-byte characters in such a manner that a size of a 2-byte character is smaller than twice the size of a 1-byte character, a device and method for adjusting an interval between 1-byte characte... | 05/05/1998 |
| 5102243 | Printing apparatus for printing same size ruled line without regard to print pitch selection In the print apparatus of this invention, a ruled line is formed on a print medium as a line-up of lines printed by plural printing operation with a line type. A carriage on which the printing unit including the line type is installed is moved from the po... | 04/07/1992 |
| 5088847 | Setting variable character width in matrix printer When a specified head energizing pulse interval involves a decimal fraction, the fraction is accumulated at every printing, and when the cumulative value of the fraction is smaller than one pulse, a printing head is driven at a pulse interval of an intege... | 02/18/1992 |
| 4946299 | Document processing apparatus A document processing apparatus has a printer for printing characters; a keyboard used for inputting characters such as alphabetical characters, symbols and numerical characters; attribute imparting circuitry for imparting an attribute to characters input... | 08/07/1990 |
| 4883377 | Character pattern generator for dot matrix printer A character pattern generator for a dot-matrix type printer. A storage device stores first dot pattern data for fixed pitch printing and second dot pattern data for proportional printing where the proportional printing dot pattern data corresponding to a ... | 11/28/1989 |
| 4757462 | Signal processing apparatus A pattern pitch adjustment is applied to dot matrix pattern data as it is output from a CPU to a printer. The data is transferred from a DMA to the printer bit by bit, and the number of synchronizing signals output from the printer for each bit is counted... | 07/12/1988 |
| 4752144 | Reciprocative typing control system A reciprocative typing control system in which a typing head is driven reciprocally for typing letters at periodic separations in response to a typing signal A following a delay D. A timing signal is produced each time the head is driven by a predetermine... | 06/21/1988 |
| 4741634 | Printer with variable head displacement This invention provides a printer capable of regulating the displacement of printing head according to the kind of characters to be printed. The printer has a printing head, an identifying device for identifying the print size of the printing head, and a ... | 05/03/1988 |
| 4740093 | Proportional spacing printing management A method of determining character width for proportional spacing printing based on information contained in a dot pattern table. For a selected character, the character dot pattern in the table is analyzed to determine leading blanks and the actual charac... | 04/26/1988 |
| 4553866 | Electronic typewriter An electronic typewriter comprises a character-bearing disk movable along the platen and a selector to space selected characters according to a plurality of constant spaces or proportional spaces. A permanent, alterable memory has a series of locations, w... | 11/19/1985 |
| 4400106 | Typesetting apparatus A typesetter with a continuously rotating character drum that places lines of character images on thin transparent tape, equalizes line lengths for margin justification by stretching the tape, and places the lines on transparent film in a form suitable fo... | 08/23/1983 |
| 4371274 | Apparatus for dot-matrix printing with proportional character spacing An apparatus for dot-matrix printing with proportional character spacing utilizes a conventional character generator for generating characters with fixed spacing in which a matrix storage area of equal size is assigned to each character, regardless of the... | 02/01/1983 |
| 4326813 | Dot matrix character printer control circuitry for variable pitch printing A dot matrix character printer having the capability of printing characters at variable speeds and with variable pitches. Variable pitch is provided through the use of programmable radix counters which control actuation of the printing solenoids. Solenoid... | 04/27/1982 |
| 4321599 | High legibility multi-character dot matrix display A character generator (14) applies character columns in a standard 5×7 or similar matrix form to a multi-digit dot matrix display (12). Inhibition circuitry (33), (23) eliminates all character columns containing no character dots. Additional circuitry (1... | 03/23/1982 |
| 4257711 | Proportional spacing impact printing apparatus A printing element (90) which is rotatable to different positions to print characters having different widths is carried by a carriage (98). The width of each character is divided into a leading width portion and a trailing width portion which are oriente... | 03/24/1981 |
| 4252451 | Print point reposition feature for an electronic typewriter On electronic typewriters which have the ability to record into a small working memory the escapement of the characters which are keyed at the keyboard, it is many times advantageous to be able to reposition the carrier at the rightmost end of the typed m... | 02/24/1981 |
| 4236838 | Type-carrier disk with flexible tongues A type-carrier disk with flexible tongues for a printing device includes a central part for fixing onto a selection shaft and a peripheral notched crown from which issue several flexible tongues each tongue ending with a base from which projects a corresp... | 12/02/1980 |
| 4225249 | Variable character spacing matrix for proportional spacing printing systems The aesthetic characteristics of adjacent characters are used to enhance the quality of output in a proportional spacing printer and to provide right margin justification for composing. Spacing between characters is determined on the basis of the characte... | 09/30/1980 |
| 4213714 | Printer having variable character density An improved matrix printer is described employing a high order, single track incremental position encoder to provide a plurality of electrical reference signals representative of predetermined print positions along a platen and for locating matrix columns... | 07/22/1980 |
| 4210404 | Printhead compensation arrangement for printer An impact printer is described having a control circuit for varying the location at which the printing elements of a printhead are actuated in order to compensate for flight time of the elements and other mechanical characteristics of the printer.... | 07/01/1980 |
| 4176977 | Proportional carrier control and moving mechanism for electric typewriter A drive arrangement for a single element typewriter in which the element is mounted on a moving carrier, for facilitating proportional spacing incremental movements of the carrier. The carrier is bidirectionally driven by a servo motor which rotates bidir... | 12/04/1979 |
| 4074798 | Encoded print wheel system A method and apparatus for providing variable print hammer energy information and variable character spacing information for every character of every font in an electronic typing system having interchangeable print wheels, wherein the individual print whe... | 02/21/1978 |
| 4005772 | Automatic justifying typewriter having pitch changing and line spacing apparatus Automatic justifying typewriter includes incremental drive means operatively coupled to a printer for effecting controlled horizontal and vertical movement between a printout sheet and the character printing means. The operation of the printer and the dri... | 02/01/1977 |
| 3999168 | Intermixed pitches in a buffered printer In a printer in which character code bytes representing characters to be printed are translated into graphic code bytes, assembled into lines and pages, and thereafter used to select character image bits which are applied to modulate a scanning laser beam... | 12/21/1976 |
