| Patent Number |
Title Of Patent |
Date Issued |
| RE30741 |
Miniaturized printer control assembly |
September 15, 1981 |
| A miniaturized printer wherein the duration of each print cycle, the sequence of printing operations performed in each print cycle and the time between each print cycle is controlled by a detecting arrangement. The detecting arrangement is adapted to detect the rotary position of a p |
| RE29745 |
Printer |
August 29, 1978 |
| A printer has a plurality of print hammers displaceable between a rest position and a print position, and respective deformable elastic bodies maintained in a deformed position by each print hammer in its rest position and biasing the print hammer toward its print position. Respectiv |
| RE28897 |
Motion transforming mechanism |
July 13, 1976 |
| A motion-transformer suitable for use with a small printing machine utilizes a trigger mechanism in combination with a rotating drum and slidable members to convert the rotation of the drum into linear motion. The linear motion provides for intermittent advancement of paper on which |
| RE28796 |
Compact flying printer |
May 4, 1976 |
| A compact flying printer having a continuously rotating print drum and ratchet wheel, a trigger lever positionable to be struck by a tooth of said ratchet wheel and a hammer lever driven by said trigger lever and provided with a print hammer at its end. The trigger lever is formed with |
| D267567 |
Ink-ribbon cassette |
January 11, 1983 |
|
| D267413 |
Printer for an electronic calculator |
December 28, 1982 |
|
| D266570 |
Ink roll set for printing apparatus |
October 19, 1982 |
|
| D266424 |
Electronic printer |
October 5, 1982 |
|
| D263808 |
Display panel for a digital timepiece |
April 13, 1982 |
|
| D263604 |
Inkroller set |
March 30, 1982 |
|
| D254742 |
Printer for electrical cash register |
April 15, 1980 |
|
| 4398461 |
Small printer |
August 16, 1983 |
| A printer of small overall size includes a plurality of typing wheels on the periphery of which are provided letters characters or symbols. At a printing position, a selection mechanism selects one of the plurality of letters, characters or symbols on each typing wheel. A printing mechan |
| 4386565 |
Printer apparatus using electromagnet |
June 7, 1983 |
| A printer of the needle or hammer impact type prints by release of spring-stored energy, driving the needle or hammer against a platen or character ring. A rotating cam restores the printing member to a locked standby condition after impact, and an electromagnet attracts a moveable c |
| 4383773 |
Serial printer |
May 17, 1983 |
| A serial printer for use in portable electronic calculators and the like. The printer includes a single printing head having a plurality of characters divided into two groups circumferentially disposed therearound in a predetermined pattern. A first selecting mechanism selects one of the |
| 4375338 |
Wire dot print head |
March 1, 1983 |
| An improved wire dot print head assembly for a wire dot printer including a resilient securing spring for holding the assembly elements secure is provided. The print head assembly includes a plurality of print wires, each selectively driven through a print nose by a plurality of elec |
| 4373439 |
Character ring-selecting type printer |
February 15, 1983 |
| Character rings mounted on a common shaft and having a plurality of circumferential character columns thereon, are opposed by a platen including recessed portions. A recessed portion faces non-printing character columns when the platen presses against one character column on each cha |
| 4373438 |
Dot printer |
February 15, 1983 |
| A rounded end on a pivoted arm impacts a print medium through an ink ribbon to form a printed dot on the print medium. For printing, a wire drawn by an electromagnet acts on the arm between the pivot axis and the rounded end. A plurality of arms and electromagnets are spaced apart along |
| 4368478 |
Ink supply system for ink jet printers |
January 11, 1983 |
| An ink supply system for an ink printer. The system includes an ink cartridge which supplies ink through a conduit to the print head of the printer. A bubble trapping device is disposed along the conduit and includes a porous member which prevents air bubbles from entering the nozzle |
| 4367480 |
Head device for ink jet printer |
January 4, 1983 |
| A head for an ink-on-demand type ink jet printer includes two laterally offset, linear rows of ink nozzles, said nozzle rows being linearly offset for producing alternate dots of a continuous printed line of dots. Interconnected chambers and channels, formed in opposite surfaces of a |
| 4364067 |
Highly integrated ink jet head |
December 14, 1982 |
| A head for an ink-on-demand jet dot printer is highly integrated to provide a large plurality of closely spaced dots by combining more than one head of lesser dot density as components of a single unit. The dots from the separate component heads are interspaced on the print recording med |
| 4364066 |
Ink jet printing head |
December 14, 1982 |
| An ink jet printing head of simple construction includes two supply channels and a pressure chamber which are substantially coplanar with the nozzle. A piezoelectric element acts to decrease the pressure chamber volume and eject an ink droplet from the nozzle. A smoothly curved supply |
| 4358776 |
Thermal printer and improved platen |
November 9, 1982 |
| A thermal printer for printing on a thermal print paper including a platen element of a porous material, a fibrous material or a plastic material having an inrregular surface is provided. The platen element is opposed to the printer heating element which generates thermal energy for prin |
| 4357116 |
Printer control assembly |
November 2, 1982 |
| A printer for an electric cash register or the like which performs at least two print related functions. The printer includes a printing head adapted for lateral displacement across a printing paper for effecting printing on the paper. The printer also includes a drive mechanism for effe |
| 4352691 |
Liquid ink for printers |
October 5, 1982 |
| A liquid ink for printers including a component for dissolving at least one of a fibrous material, sizing material and surface treatment material included in the recording medium is provided. An aqueous liquid ink in accordance with the invention includes a water-soluble dye, a strong |
| 4350907 |
Thermally sensitive printer |
September 21, 1982 |
| An improved thermally sensitive printer for recording characters on a thermally sensitive medium is provided. An exothermic printing head includes a substrate and a plurality of selectively energized resistance elements supported on the substrate, the resistance elements being energi |
| 4343556 |
Ink ribbon cartridge |
August 10, 1982 |
| An ink ribbon cartridge for a printer drives an endless loop of ribbon by passing the ribbon between a feed roller having teeth of one pitch and a pinch roller having teeth of another pitch. |
| 4328747 |
Character ring-selecting type printer |
May 11, 1982 |
| A character ring-selecting type printer for printing m laterally spaced columns includes less than m character rings with lateral spacing between adjacent character rings. The character rings are translated in unison to enable one character ring to print in more than one column. |
| 4271383 |
DC Motor control circuit |
June 2, 1981 |
| A DC motor control circuit for providing improved starting and stopping control is provided. The control circuit includes a DC motor that is driven in response to an operating voltage applied thereto. A shunting element is adapted to define a current path in parallel with the DC motor |
| 4270448 |
Printing device |
June 2, 1981 |
| In a printing device including rotatable character wheels having type characters on the surface thereof and a selection mechanism for selectively bringing a character to a printing position, a drive means is provided for moving the selection mechanism. Coupling between the drive mean |
| 4259026 |
Dot printer having concentric driving cams |
March 31, 1981 |
| In a miniature printer for printing with dots on printing paper, concentrically mounted driving cams provide both horizontal and vertical motions which synchronize the reciprocating action of the printing head mechanism with the paper feed and ink ribbon feed mechanism. Constant velo |
| 4258624 |
Miniaturized printer |
March 31, 1981 |
| A small-sized printer having print characters circumferentially disposed around a plurality of print rings rotating by a motor on a common shaft, includes a detector comprised of an integrated circuit board rotating on the same shaft. The rotating circuit board incorporates conductive fo |
| 4252449 |
Construction of wire type dot printer head |
February 24, 1981 |
| In a wire type dot printer head a flat lever pivots on a fulcrum when attracted by an electro-magnetic coil. Pivoting of the lever on the fulcrum drives a print wire or needle, in opposition to a biasing spring, against an ink ribbon and paper for printing on the paper with dots. The |
| 4222674 |
Head portion of a dot printer |
September 16, 1980 |
| The head portion of a dot printer includes a cup-shaped yoke, an electromagnet on a coil frame, an iron core within said coil frame, said core being securely fixed to said cup-shaped yoke, a second yoke, a movable element comprising a second iron core disposed for attraction by said |
| 4204180 |
End of paper roll detection assembly |
May 20, 1980 |
| An end of paper roll detection assembly for detecting the end or near-end of a paper roll on a hollow core is provided. The end of paper roll detection assembly includes a detecting bar pivotally mounted on a retaining bar biased towards the side face of the paper roll which is suppo |
| 4197021 |
Printing head for a wire-type dot printer |
April 8, 1980 |
| The printing head for a wire-type dot printer includes a plurality of electromagnet coils, each on a coil core including a central post, said coil core and central post being of a magnetic material. Each of the coil cores is mounted on a frame having a cap for holding an operating plate |
| 4196349 |
Clock signal producing device for a card reader |
April 1, 1980 |
| A device for reading the data on a card where the data are recorded in the form of marks or punched holes and the like includes means for producing a clock signal, such a clock signal being necessary for reading the data. The device is mechanical and eliminates the need for timing marks. |
| 4182576 |
Ink-ribbon reversing device |
January 8, 1980 |
| An ink-ribbon reversing device for use in a printing machine having an ink-ribbon winding mechanism is provided. The device includes two ink-ribbon spools and associated spool gears mounted on separate spool shafts spaced apart from each other. A drive shaft is positioned between the |
| 4182240 |
Printer control assembly |
January 8, 1980 |
| A small sized printer wherein the duration of the print cycle and the sequence of printing operations, during a print cycle, is controlled. The printer includes a plurality of print characters circumferentially disposed therearound, the print characters being selectively positioned in |
| 4181443 |
Drive mechanism for a reciprocating printer carriage |
January 1, 1980 |
| A printer including a print head adapted for reciprocal displacement across a print tape for effecting printing on the tape in at least one direction of the displacement is provided. The print head is engaged with a timing belt operatively coupled to a drive assembly for selectively adva |
| 4175876 |
Drive mechanism for printer |
November 27, 1979 |
| A printer including a printing head adapted for reciprocal displacement across a printing tape for effecting printing on the tape in at least one direction of reciprocation is provided. The printer includes a lever pivoted on a frame and adapted to reciprocate the printing head and a |
| 4173183 |
Line printer character belt |
November 6, 1979 |
| In a line printer character belt in which characters are mounted on flexible fingers which are struck by printing hammers toward a platen in the printing operation, the fingers are flexed toward the platen by a projection on the fingers or on a character block on which the fingers are |
| 4170937 |
Miniaturized printer control assembly |
October 16, 1979 |
| A miniaturized printer wherein the duration of each print cycle, the sequence of printing operations performed in each print cycle and the time between each print cycle is controlled by a detecting arrangement. The detecting arrangement is adapted to detect the rotary position of a p |
| 4168498 |
Digital display drive and voltage divider circuit |
September 18, 1979 |
| An improved interfacing circuit that is readily adapted to be integrated into the same circuit chip as the remaining circuitry in an electronic instrument having a digital display formed of passive display elements, and is adapted to deliver a plurality of discrete voltage levels to the |
| 4168421 |
Voltage compensating drive circuit for a thermal printer |
September 18, 1979 |
| A voltage compensating drive circuit for a thermal printer is provided. The thermal printer includes a power supply for producing a supply voltage of varying magnitude. A plurality of exothermic printing elements are disposed on a substrate for recording print characters on a thermally |
| 4165687 |
Printing equipment and method of operation thereof |
August 28, 1979 |
| A small-sized printing apparatus which operates at a low noise level and provides good printing quality includes a plurality of printing rings, each having type characters on the peripheral surface thereof. The printing rings are mounted on a shaft which reciprocates for the purpose |
| 4164181 |
Printer |
August 14, 1979 |
| An improved printer comprising a plurality of character rings provided with a plurality of characters on the respective peripheries thereof and corresponding pluralities of ratchet wheels and pawls. Each ratchet wheel is radially mounted on a character ring and a corresponding pawl is |
| 4161912 |
Miniature printer |
July 24, 1979 |
| A miniature printer especially suitable for use in a small calculator or the like, utilizes the energy released from a spring storage means to power the printing, paper feeding, and inking operations. The energy is stored by the spring from either manual operation or motor power. |
| 4152982 |
Miniature printer |
May 8, 1979 |
| A miniature printer especially for use in a small calculator or the like, of the type in which a plurality of character wheels are carried on a rotating drive shaft. The speed of rotation of the drive shaft can be varied so that its speed during character selection is different from that |
| 4152768 |
Electronic apparatus with calendar |
May 1, 1979 |
| An electronic apparatus with calendar is provided incorporating calculation circuitry and a display portion for displaying the up to thirty-one dates in a month and a day of the week so that a user is provided with a visual indication representative of the day of the week and the date of |
| 4113391 |
Method for controlling voltage and providing temperature compensation in a thermal printer |
September 12, 1978 |
| A method and apparatus is provided for controlling the period or pulse width of pulses applied to exothermic printing elements of a thermal printer to effect printing. Control of the period or pulse width is in response to variations in applied voltage and ambient temperature. A pulse |
