Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 5462371 | Indexing planetary gear train for a printer An indexing double planetary gear train forms a portion of a feed system for accurately advancing a print media sheet through a printer. The planetary gear train has primary and secondary rings coupled to a sun gear by a series of planet gear clusters. Ea... | 10/31/1995 |
| 5056943 | Line-spacing device for a typewriter or the like In a line-spacing device for a typewriter or the like, where a platen, used as a support for the paper, is moved forward in steps by means of a ratchet it is provided for attaining a half-step transport that the gripper point (20) is seated longitudinally... | 10/15/1991 |
| 4940348 | Platen controlled sheetfeed permitting back-up for erasure Sensor arm (5) detects paper (1) at the printing stations of a printer (13). The sensor arm is linked through shaft (37) to position ledge (43) where it encounters and extension (47) of spring clutch (31) to decouple the spring clutch. Sheetfeed (11) is b... | 07/10/1990 |
| 4934849 | Apparatus for feeding recording paper forwardly and backwardly An apparatus for feeding recording paper forwardly and backwardly in a printing apparatus comprising a pair of paper feed devices, one on each side of a printing unit. The upstream paper feed device is lower in forward feed speed than the downstream paper... | 06/19/1990 |
| 4913575 | Printing machine A printer with a printing paper feeding apparatus is disclosed. The printer comprises a pressing device for pressing a printing sheet on the platen roller which is operable to an open position to allow the sheet to pass freely, a detection device for detecting... | 04/03/1990 |
| 4896978 | Method for optional control of line spacing in electronic typewriter A process for controlling line spacing, including the steps of clearing or setting line pitch variable mode in a first state; checking keyboard input in a second stage; determining whether the keyboard input indicates line pitch variable mode, and perform... | 01/30/1990 |
| 4893953 | Printer for normal line feed by a carriage return Disclosed is a printer having memory means for storing the vertical print position movement data so as to print a super-script or sub-script character. When the carriage is returned after printing in a nonstandard row position, the print position is moved... | 01/16/1990 |
| 4881837 | Automatic sheet feeder The sheet feeder can be mounted on a typewriter or on a printer in a system for processing data. The sheets which are accommodated in a feed magazine are passed to the platen roller by friction stripper rollers. After the printing operation, the sheets ar... | 11/21/1989 |
| 4863295 | Printer platen motor controller A printer which is so constructed as to automatically detect deviation of a printing type when a deviation detecting command signal is detected and to automatically adjust paper feed immediately after a pause mode is released.... | 09/05/1989 |
| 4844631 | Thermal print head printer including a platen The platen (11) is mounted between two side plates (9-10) of equipment which is hinged to two risers (5-6) to rotate about an axis γ running parallel to the axis of the platen. The platen is provided with a freewheel mechanism including an inner ring (28... | 07/04/1989 |
| 4842430 | Printing paper reversing device A paper reversing device comprises a paper inlet roller for moving a printing paper toward a guide plate in association with a reversing roller, and a cylindrical fur brush disposed above the guide plate for forcing the printing paper which has passed bet... | 06/27/1989 |
| 4838719 | Sheet tensioning printer rollers A thermal color printer includes a reversible platen roller 9 and associated pinch rollers 11, 10 on the paper feed and discharge sides. The paper is repeatedly advanced back and forth through the printing station to successively print the different color... | 06/13/1989 |
| 4820063 | Typewriter with a correction function An electronic typewriter is provided with a function that the print head is moved leftward linearly when a backspace key is continuously operated after the printing paper is fed more than a preset amount, while the print head traces the printed characters... | 04/11/1989 |
| 4789257 | Line find feature for an electronic typewriter A function for an electronic typewriter is described which allows the operator of the typewriter to realign the print element of the typewriter to the prior adjacent, or the following adjacent line which contains textual material, even when the present po... | 12/06/1988 |
| 4761087 | Printer with automatic printed paper advancement to tear-off position and subsequent retraction to new first print line A printer is provided with a controllable bail located between a print station and a downstream paper tear-off station. Upon occurrence of a first control signal, a printed portion of the paper is advanced to a desired tear-off position adjacent the tear-... | 08/02/1988 |
| 4752786 | Single motor multi-function drive control recorder A thermal printer using a single pulse motor is disclosed. This thermal printer comprises: a single pulse motor; a moving member which is moved in accordance with the drive of the pulse motor; a head raising and lowering mechanism and a sheet feed mechani... | 06/21/1988 |
| 4714364 | Automatically returned paper ball assembly of a printer A paper setting mechanism of a printer for setting a sheet of paper in position around a platen roller for printing desired information includes a paper bail assembly having at least one bail roller, which is pivotally supported and normally biased so as ... | 12/22/1987 |
| 4702632 | Sheet loading device and method for a printing apparatus A printing apparatus is disclosed which comprises a platen roller for feeding a cut paper sheet set on a hopper, a paper bail bar having paper bail rollers used in conjunction with the platen roller to secure the cut paper sheet against the platen roller,... | 10/27/1987 |
| 4697943 | Electric platen driving device with manual override The present invention relates to a driving device of platen used in printing devices such as typewriters, printers, etc., which is equipped with a motor, a first gear adapted to transmit the output from this motor and provided with notches on part thereof... | 10/06/1987 |
| 4652161 | Sheet feeding apparatus A paper feeder for use in dispensing paper into a printer with sensors for leading and trailing edges of paper and with a platen which rotates in a forward imprinting direction in response to a leading edge and in a backward, paper-ejecting direction in r... | 03/24/1987 |
| 4645365 | Paper feed control in a printer A paper feed system in a printer includes a platen for supporting a recording paper sheet, a paper feed drive motor, and a transmission gear mechanism for transferring the rotation of the paper feed drive motor to the platen so as to conduct an automatic ... | 02/24/1987 |
| 4630949 | Device for controlling the rotary movement of a platen A device for controlling the rotary movement of a platen roller of a typewriter comprises a bidirectional electric motor coupled to the platen by a worm gear and gear wheel and a pair of knobs which are disposed at the sides of the platen and which are ro... | 12/23/1986 |
| 4621933 | Line spacing mechanism for printing machines A line spacing mechanism for printing machines comprises an electric motor which is operable to rotate selectively in either direction. A worm on the shaft of the motor meshes with a helicoidally toothed wheel to cause a platen roller to rotate in the clo... | 11/11/1986 |
| 4591882 | Printer electromagnetic clutch drive A printer such as a thermal printer includes a reversible motor, a paper feed driver angularly movable through a desired angle in response to operation of the motor, a paper feeder rotatable for feeding a sheet of paper, and an electromagnetic clutch oper... | 05/27/1986 |
| 4585224 | Paper feeding apparatus A paper feeding apparatus for a printing device, comprising a rotational shaft connected through a one way spring clutch to a forward and reverse rotatable driving motor supported by the printing device, feed rollers mounted on the rotational shaft so as ... | 04/29/1986 |
| 4576492 | Multi-stage printer A multi-stage printer has an arithmetic section for calculating the next paper moving amount on the basis of a line position of a selected type stage of a plurality of type stages; printing is performed by a desired number of digits in a first line positi... | 03/18/1986 |
| 4531850 | Line spacing device for printing machines A line spacing device for printing machines comprises an electric motor arranged to rotate selectively in a clockwise direction and anticlockwise direction and a control disc carrying a pawl on an eccentric. The tooth of the pawl describes a closed trajec... | 07/30/1985 |
| 4480931 | Electronic typewriter An electronic typewriter which provides for significant simplification of machine operations. The typewriter includes automatic error correcting function associated with electronic controls and a memory. A series of text data which have been deleted durin... | 11/06/1984 |
| 4439051 | Single printing station, multiple record member feeding mechanism A single drive mechanism providing selective feeding of at least two printing media and independent bi-directional movement of the media in the operation of a single print station. The drive mechanism including a platen member is movable to allow the two ... | 03/27/1984 |
| 4405248 | Advancing device in electrically driven typewriters and similar machines In an advancing device for the motorized vertical displacement of a record carrier in an electrically driven office machine, which device includes an operating element mounted for movement in either one of two directions from a zero position, and members ... | 09/20/1983 |
| 4269522 | Bi-directional record material feed apparatus A record material feed apparatus for use with a printing machine of the type including a platen and drive means for rotating the platen about its longitudinal axis. The apparatus comprises a frame capable of being attached to a printing machine adjacent t... | 05/26/1981 |
| 4234261 | Printer The printer is provided for alternative use with long webs or individual, precut forms; it includes two friction roll drives adjacent to the print head and platen, and a sprocket drive upstream, being permanently engaged with a perforated web. The drives ... | 11/18/1980 |
| 4224869 | Parallel line printer According to a representative embodiment of the invention, a parallel line printer such as a thermal printer is provided having a parallel printing head with a plurality of printing elements arranged to extend across the width of a paper strip. Electrical... | 09/30/1980 |
| 4195940 | Line control for platen printing devices A control for platen rotation in printers, and particularly in telex machines where the platen rotation drive, either a stepping motor or a DC motor, is provided with an incremental control actuated by keyboard keys to advance or counter advance the plate... | 04/01/1980 |
| 4181444 | Device for printing out indices and powers in typewriters A device is disclosed for index and exponent impression printing in typewriters. An exponent or index switching key has associated with it an edge detector, and parallel thereto, a state detector. A time function element which triggers a gate circuit for ... | 01/01/1980 |
| 4175687 | Uniform indexing of paper forms The accurate and uniform indexing of paper business forms with line hole punched margins. The index drive overcomes any possible accumulation of errors. A pawl and ratchet device is employed in the feeding of the paper form. The ratchet is rotated approxi... | 11/27/1979 |
| 4082172 | Justifying text writing reproducing machine A justifying text writing reproducing machine for automatic or manual typing of text includes a keyboard enabling an operator to manually type text, and reader means responsive to coded information on a coded medium for automatically typing lines of text.... | 04/04/1978 |
| 4074067 | Digital printout arrangement with magnetic field carriage drive A digital printout arrangement to print out a predetermined character response to a known coded input signal. The printout arrangement has a rotatably moveable platen for moving the medium upon which the printing is to occur in both forward and reverse di... | 02/14/1978 |
| 4000803 | Vacuum-buffered bidirectional paper drive system A printer-plotter system includes a vacuum-buffered bidirectional paper drive system for moving paper uniformly forward and backward over a sprocketed platen and sprocketed drum. The platen comprises a stationary portion with a flat region and a rotatable... | 01/04/1977 |
| 3993179 | Justifying, text writing composing machine A desk top justifying text writing composing machine including automatic encoding and reading control means for operating a desk top justifying reproducing machine, or for operating larger and more sophisticated printing machines capable of automatic just... | 11/23/1976 |
