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Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.

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Class 400/174 - Type-head, per se


Subclass of Class 400 - Typewriting machines
Definition: Subject matter wherein significance is attributed to the
No. of patents: 87
Last issue date: 02/19/2008


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NumberTitleIssue Date
7331660Cradle unit having a cover assembly with ink refill port
A cradle unit for an inkjet printer is provided. The cradle unit has a body complementary to a removable inkjet cartridge of a type having a pagewidth printhead and a refillable ink supply, and a controller for controlling the operation of the printhead to facilitat...
02/19/2008
7213897Ink-jet printer
The present invention has a recording head of jetting ink drops to record, a carriage adapted to be loaded an ink container storing ink to be fed to the recording head in a removable state, and a communication unit of communicating with a storage element for the ink...
05/08/2007
7046386Bandwidth booster for aging printer ASICs
A method triggers a printer (106) to receive a signal (300) from a print engine (202) indicating the initiation of the transmission of print data; transmits a shorter signal (302) to a printer ASIC (204), in response to receiving a...
05/16/2006
6994423Printer carriage interlock for ink cassette
An interlock arrangement for selectively removably mounting an ink cassette in the chute of a printer carriage comprises an ink cassette including a notch or recess and an interlock clip selectively connectable to a side of a printer carriage chute and cooperates wi...
02/07/2006
6592277Label roll core holder associated system and label regulating guide in labeler
A printing labeler having a label restraining and guiding system with a deflection member for turning back only the backing sheet of a continuous label strip composed of a backing sheet having a label peel-off layer and a plurality of labels provisionally...
07/15/2003
6584896Label roll core holder associated system and label regulating guide in labeler
A core holding device and a cover for roll-shaped label of a label sticking machine capable of assuredly holding a roll-shaped label or a core thereof, simplifying an operation for installation and removal thereof and forming it simple and compact, charac...
07/01/2003
6447185Core holding mechanism and label adjusting guide for roll-shaped label of label sticking machine
A core holding device of a label sticking machine capable of assuredly holding a roll-shaped label or a core thereof, simplifying an operation for installing and removal thereof, and forming it simple and compact. Characterized in that core holding member...
09/10/2002
6283651Mounting arrangement for a print head in a printer
The invention relates to an arrangement for mounting a print head in a printer. The arrangement comprises a frame (1) to which a feeder device feeds a material to be printed which the printer will print on by means of a print head (3), movably arranged ad...
09/04/2001
6000869Technique for controlling the position of a driving motor and a print head
A device for accurately controlling the positions of a driving motor and a print head and enhancing print quality by sensing the position of the driving motor by occurring pulses from a timer at shorter intervals than predetermined step units and synchron...
12/14/1999
5746521Thermal printhead with integrated printhead position sensor
A thermal printer is provided with an integrated sensor that detects the printhead position without requiring a custom cable assembly or other sensing components. The thermal printer comprises a rotatable platen and a printhead disposed relative to each o...
05/05/1998
5676475Smart print carriage incorporating circuitry for processing data
The present patent discloses a method and apparatus for improving communication between print drivers and a host computer. The disclosed method simplifies and standardizes the output data format of the host computer. The disclosed printer processing elect...
10/14/1997
5567063Cordless printing head control system
A cordless printer head, for example of a bubble-jet or ink-jet printer, is provided with memory to allow it to store data to be printed and a control device for driving the printer head. This avoids the need for a continous data transmission to the print...
10/22/1996
5413422Print wheels and methods of using same
In a print wheel encoding scheme, signs such as reflector strips are arranged on an encoder ring along the print wheel petals. One strip is provided at each petal. The strips are grouped into groups of three or more petals. Each group starts with a reflec...
05/09/1995
5174666Printing device having printwheel coupling means
A printing device having a detachable printwheel coupling means which includes a motor driven drive plate which is formed with a cantilevered spring finger and an aligning slot disposed on the side opposite the spring finger. The spring finger carries at ...
12/29/1992
5152616Miniature printer
A miniature printer is provided which can print characters in additional different character sets of fonts by combining several character sets which are included in the printer on a type drum or type belt. The printer includes a mechanism for selecting pa...
10/06/1992
4913568Dot printer
A dot printer wherein a film of magnetic ink is formed in a slit shaped between a pair of magnetic poles, and needles piercing through the ink film thus formed are driven to deposit the magnetic ink on a recording paper so as to print dots thereon. The ti...
04/03/1990
4904096Printing device
A printing device according to the present invention, the contact of a ribbon-guiding-member surfaces with the ribbon is increased, restraining the movement of the ribbon with the threading path bent by elastic restitution of the flexible ribbon guiding m...
02/27/1990
4881839Portable electronic data handling/data entry system
An electronic terminal is mechanically and electrically connected to an electronic printer module to form a portable electronic terminal/printer. The bottom housing of the terminal and an extended portion of the bottom housing of the printer module togeth...
11/21/1989
4867584Impact mechanism for impact printer
An impact mechanism for use in an impact printer, to deliver a printing force to drive a character element against a platen by means of a print tip movable toward and away from the platen. A rockable bail bar having an axis of rotation substantially paral...
09/19/1989
4863297Thermal printer
A multihead thermal printer comprises a plurality of thermal heads arranged around a platen roller. An ink film associated with each thermal head includes an end mark leaving a length to an end of the ink film at least equal to that of one sheet of record...
09/05/1989
4846594Apparatus for printing of envelopes and pre-packaged mailing inserts located therein
Apparatus for printing of mailing inserts prepackaged within envelopes and for printing of the envelopes also as desired simultaneously wherein specifically both sides of one or more inserts can be printed as desired by one pass through a computer control...
07/11/1989
4842795Method of making coinjection molded daisywheel printhead
A printhead is formed by injecting unfilled nylon by injection unit 1 and mineral filled nylon by injection unit 3. The filling adds impact resistance for printing, while the unfilled nylon is particularly resistant to flexural fatigue near the hub of the...
06/27/1989
4838714Needle print head
In a needle print head including a plurality of hinged armature magnets arranged in a ring about a needle guide with each of the magnets including a U-shaped magnet yoke, a magnet coil on one of the U-legs of such yoke and a hinged armature arranged at le...
06/13/1989
4828413Rotary print element, components thereof and drive coupling apparatus therefor
Improved rotary-type printing wheels, components thereof and mechanisms for mounting the printing wheels to a drive are disclosed. The disclosed printing wheels have a reduced rotary moment of inertia. As compared to all plastic printing wheels, they have...
05/09/1989
4800259Document track work station
A document track for use in a check encoding machine or typewriter comprises a workhead positioned in a slot in a wall of the track, the slot being positioned transverse to the direction of movement of a document in the track, the slot closed off by a fle...
01/24/1989
4793724Printing support and method for placing labels on a transparent record medium
An improved printing support and method for use in a conventional dry lettering printing machine of the type having a print station, a rotatable printing support having print characters thereon, and means for causing the machine to execute a print cycle w...
12/27/1988
4790674Impact printer having wear-resistant platings on hammer springs and pole piece tips
In a dot matrix line printer in which a plurality of hammer springs mounted along the length of an elongated reciprocating hammerbank are selectively released or fired to impact dot printing impact tips mounted thereon against a print paper through a leng...
12/13/1988
4778297Hammer coil cooling means in line printer
A cooled print hammer assembly in which a plurality of hammer coils are formed in a resin member having a recess in which is placed a cooling fin. The opened faces of the fins are placed adjacent a plate of the frame of the print hammer assembly so that c...
10/18/1988
4722621Keyboard assembly and recording apparatus
A keyboard assembly for selecting characters to be recorded includes a substrate carrying an array of characters arranged on one face thereof. A character selection device moves between advanced and retracted positions along each of two axes of the array ...
02/02/1988
4721400Hammer unit for printers
This invention provides a hammer unit for use in character printers in which the front end of the plunger of the solenoid operating under control of the print command is positioned directly opposite to and close to the type face of the character head, wit...
01/26/1988
4714362Typewriter daisy wheel
A daisy wheel for a typewriter having a plurality of petals with a character head on the end of each petal comprising irregular width characters on the ends of the petals and means for positioning the character heads in an irregular spacing about the circ...
12/22/1987
4688955Automatic ribbon positioning serial printer
A serial printer having a platen (5) and a carriage (4) having a printer head (6) with a plurality of aligned print needles close to the platen (5) for mosaic printing is disclosed. According to the present invention, an ink ribbon is in a detachable ribb...
08/25/1987
4684270Print element, printer and method of printing
A serial print element for use with a serial matrix font type printer for printing dot matrix type graphics with a serial matrix font type printer and a method of printing dot matrix graphics with a serial matrix font type printer. The print element inclu...
08/04/1987
4674898Printwheel
A printwheel for an impact printer includes a sheet metal core having a central disk portion and a plurality of radially extending arms. Sintered ceramic or metal character slugs are affixed to retaining regions at the ends of the respective character arm...
06/23/1987
4673305Printwheel for use in a serial printer
A printwheel, for use in a serial printer, in which the spokes pass in contact with a printwheel alignment member, which contact is a noise generation and wear inducing source. The printwheel is designed to include a noise and wear reducing element. The p...
06/16/1987
4668113Printing disc with damping means
In a type disc composed of: a hub; a plurality of spokes extending radially from the hub and spaced apart about the circumference of the hub to form slits between the spokes, each spoke carrying, at its end remote from the hub, a type face arranged to be ...
05/26/1987
4664543Device for monitoring and compensating for changes in the flight time of the print hammers of impact printers
A device for monitoring and compensating for changes in the flight time of the print hammers of impact printers is disclosed. The flight time of the respectively monitored hammer is calculated from the elapsed time between the moment of firing of a hammer...
05/12/1987
4649231Method for the transmission of characters by means of the code combinations of a telegraph alphabet
It is an object of the present invention to provide a teleprinting machine capable of transmitting and writing capital and small letters, where the number of additionally transmitted shift code combinations is minimized in order to reduce the transmission...
03/10/1987
4627753Daisy-wheel type printing system with multiple functions
A printer is provided with carriage having a daisy print wheel supporting type elements at the external circumferential edges of respective spokes that make up the wheel. The printer sequentially performs a printing operation by causing its carriage to mo...
12/09/1986
4626115Dot printer head
A dot printer head including a plurality of cores each surrounded by a coil, a yoke connected to the cores magnetically, and a plurality of armatures each facing one of the cores and the yoke and having one end to which a needle is connected. A plurality ...
12/02/1986
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