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| Number | Title | Issue Date |
| 7237870 | Office machine An office machine. The office machine includes a main body, a shaft, a recording head, a driving wheel, a driven wheel, a tension buffer and a transmission belt. The shaft is disposed on the main body. The recording head is slidably disposed on the shaft. The drivin... | 07/03/2007 |
| 7021735 | Reduction of color plane alignment error in a drum printer An imaging system including a rotatable device configured for rotation, a memory including an error table having a plurality of error entries and a position detection apparatus coupled to the rotatable device, the position detection apparatus having at least one pos... | 04/04/2006 |
| 6997627 | Label printer read after print correlation apparatus A printer and a process for correlating printed subject matter with subject matter that is meant to be printed by a printer with a printing mechanism or print engine such as a thermal printer including a print head, a platen, a media upon which labels are printed an... | 02/14/2006 |
| 6955747 | Cam driven paddle assembly for a plating cell The present invention overcomes the drawbacks and limitations described above by providing a paddle assembly having a paddle that moves in a bidirectional fashion for agitating solution in a container of a plating cell. A follower is coupled to the paddle. The follo... | 10/18/2005 |
| 6461064 | Service station assembly for a drum-based wide format print engine This invention relates to an improved wide format color digital print engine, and in particular to a drum-based large format digital ink jet print engine having a vertically articulated carriage portion which carries both the print heads and an imaging ar... | 10/08/2002 |
| 6247785 | Positioning assembly for drive mechanism A print head drive mechanism and cooperating positioning assembly are provided. In one embodiment, the print head drive mechanism comprises a lead screw that is coupled to the print head and extends through the threaded hub of a gear. The gear is driven b... | 06/19/2001 |
| 6033138 | Magnetically held motor stop for use in a printer carriage feed mechanism An image processing apparatus (10) includes an imaging drum (300). A printhead (500) moves along a line parallel to the longitudinal axis (301) of the imaging drum as the imaging drum rotates. A linear drive motor (258) turns a lead screw (250) and is mou... | 03/07/2000 |
| 5964542 | Carriage system with variable belt tension A carriage drive system includes a timing belt pivotally anchored to a carriage. A drive motor rotates the timing belt, moving the carriage along a carriage path. The drive belt moves along a pair of pulleys. A first pulley is coupled to the motor's drive... | 10/12/1999 |
| 5871292 | Cooperating mechanical sub-assemblies for a drum-based wide format digital color print engine This invention relates to an improved wide format color digital print engine, and in particular to a cooperating group of print engine sub-assemblies comprising a sealable enclosure defining electronics and printing sub-spaces within the enclosure and sup... | 02/16/1999 |
| 5797691 | Carriage driver having a distortion prohibiting mechanism A carriage driver includes a cam shaft having a shaft, a cylinder provided around the shaft and made of material of which thermal expansion coefficient is different from that of the shaft, and a cam groove provided on the cylinder, a carriage motor which ... | 08/25/1998 |
| 5702189 | Rack and pinion cleaning mechanism in a serial printer In a serial printer a pinion and a rack for lateral movement of a carriage, a dislodging member with edges proximate to the rack is provided to remove any chads or other foreign matters that may be attached to the rack, as they approach the pinion with th... | 12/30/1997 |
| 5475403 | Electronic checking with printing An electronic checkbook (10) is provided for printing checks. electronic checkbook (10) is of a hand-held size and operates on two AAA batteries. An on/off switch (30) which includes a needle valve (410) controls ink flow. A print cap switch (26) is also ... | 12/12/1995 |
| 5445461 | Detachable carriage drive A carriage, preferably carrying a knife for cutting a moving web for attachment of the cut web end to a web winding roll, is driven on a supporting rail along a linear path by means of a driving motor operating a toothed driving belt. The belt is detachab... | 08/29/1995 |
| 5415483 | Sealed linear positioning apparatus First and second tubes (16, 18) extend between first and second housings (12, 14). A magnet assembly (52) is slidably received in the first tube (16) which is formed of non-magnetic material. A timing belt (38) is attached to one side of the magnet assemb... | 05/16/1995 |
| 5402156 | Slow scan stitching mechanism A translatable information transfer device, such as ink jet printhead, is stepwise advanced by a mechanism consisting of a lead screw axially spring biased at one end, cam surface provided at the other end of the lead screw, fixed cam follower which engag... | 03/28/1995 |
| 5372440 | Printing machines A printing machine wherein printing onto a substrate is effected by a first movement of a print head (1) downwardly into contact with the substrate and then by a second movement over the surface of the substrate while thermal printing elements within the ... | 12/13/1994 |
| 5276466 | Recording apparatus Disclosed is a recording apparatus for recording information signals on a recording sheet. The apparatus includes a conveyance mechanism for conveying the sheet, a recording head reciprocating along the sheet for performing recording thereon, a driving po... | 01/04/1994 |
| 5193920 | Dot line printer with paper feed time controlling capability A dot line printer with a paper feed time controlling capability includes a hammer bank accommodating a plurality of print hammers, a shuttle mechanism for shuttling the hammer bank back and forth along a print line, and a sheet feeding mechanism for feed... | 03/16/1993 |
| 5032033 | Reduced backlash mounting for printer carriages in line printers A printer carriage is carried by the guide bars of a printing unit with the help of busings and is moved along the guide bars by means of a traction mechanism. The traction mechanism is attached to the printer carriage and/or the bearing elements, in such... | 07/16/1991 |
| 4976556 | Print carrier rack drive An improved carriage moving mechanism on a frame for a typewriter of printer. (a) The carriage is movably mounted on a guide rail for longitudinal movement on the frame; (b) The traveling motor is fixedly mounted on the carriage including a pinion attache... | 12/11/1990 |
| 4920258 | Recording apparatus with carriage-driving/sheet-feeding mechanism A recording apparatus comprises a carriage for carrying a printing head capable of recording on a recording sheet, a drive belt secured to the carriage for reciprocating the carriage relative to the recording sheet when the drive belt is driven, a rotatab... | 04/24/1990 |
| 4911567 | Print head press-contact device A print head press-contact device for a printer, arranged such that a print head holder is rotatably attached to a head press-contact lever, and the head press-contact lever is rotatably attached to a head carrier. The print head is thus installed in the ... | 03/27/1990 |
| 4889438 | Serial printer carriage drive with ballistic rebound reversal In a serial printer wherein a bi-directionally operating motor drives a carriage in an oscillatory motion between two end points, an improvement for minimizing the time for direction reversal of the carriage. There is a ballistic rebound device for transf... | 12/26/1989 |
| 4834565 | Driving mechanism for a printer head A printer head is connected to its counterbalance by a counter drive in a manner to reduce shock and noise when the printer head is reciprocated by a linear motor. The counter drive comprises a pulley and a pair of belts or wires which are wound approxima... | 05/30/1989 |
| 4832518 | Apparatus for driving and controlling a printing head carriage A printing apparatus is provided with a drive device for driving a carriage supporting a printing head, a speed control device for releasing a control signal for controlling the speed of the drive device, and a signal output device for releasing a control... | 05/23/1989 |
| 4827282 | Print head assembly acceleration control method A control method for providing an acceptable motion window (range) that restricts high accelerations and velocities of an ink jet print head. The method provides two limited step ranges that are initiated dependent on the total distance that the print hea... | 05/02/1989 |
| 4819556 | Shuttle printer which stops shuttle for paper feed A line printer apparatus with which a printing control operation is carried out by using a printing mechanism and printing operation control unit in which the reversal of the motion of a printing unit is carried out in synchronization with the feeding of ... | 04/11/1989 |
| 4810110 | Form thickness compensator with cutter A printer mechanism including a frame, a platen, a printhead, a compensator mechanism supported on a frame and movable relative thereto to compensate for print media of various thicknesses, a drive motor for driving the printhead rotatable in the first di... | 03/07/1989 |
| 4804285 | Printhead transport apparatus Disclosed is a precision printhead transport apparatus. The apparatus includes a differential wheel rotatably mounted upon belt or a printhead carriage which is constrained to move along a printing path. A first portion of an endless belt or band is loope... | 02/14/1989 |
| 4787761 | Miniature printer A small-sized printer has a carriage moving in front of a platen. A print wheel is rotatably mounted on the carriage and coupled to a print wheel gear. The print wheel gear meshes with two worm gears which extend parallel to the platen. A rack-like cam al... | 11/29/1988 |
| 4784503 | Serial dot printer with movable head-carrying carriage The carriage is displaced by a tooth belt which is moved continuously by an electric motor and is connected to the carriage be means of an element engaged between two teeth of the belt and slidable on the carriage in a direction perpendicular to the direc... | 11/15/1988 |
| 4732502 | Printer A printing mechanism assembly, including a platen, a carriage bearing a print head thereon, a ribbon cassette, and drive mechanisms for driving these members for printing operation, is mounted on a subframe to form a unit. Also, control means including a ... | 03/22/1988 |
| 4718786 | Transport device for a print unit of printing machines The device comprises an electric motor whose rotor is capable of rotating selectively in either direction and a transmission unit which comprises a sleeve carrying a gear at an input end in mesh with a pinion on the motor shaft. At the output end of the s... | 01/12/1988 |
| 4714363 | Print control device for a dot matrix printer A print control device for use with a portable battery powered dot matrix printer has a DC motor which moves a carriage with a dot generating mechanism and is provided with a shaft position signal generator. A control circuit responds to the anglular posi... | 12/22/1987 |
| 4710042 | Method and apparatus for indexing the print hammer of typewriters or the like A method and apparatus for indexing the print hammer of typewriters or the like having a carriage supported type matrix positionable in X-Y directions to present a selected character for printing wherein the matrix positioning motor is used to index the h... | 12/01/1987 |
| 4686540 | Compact plotter for generation of accurate plotted images of long length A compact plotter is disclosed, having a small area in which a plurality of print heads (10) are laterally scanned to print impressions on the paper (14), and the paper (14) is incrementally advanced by an indexer (42) past the print heads (10). A paper t... | 08/11/1987 |
| 4684961 | Detachable facsimile print head drive In a facsimile recorder a traversing print head is detachably coupled to a cable by a ball on the cable which is seated on the print head by a spring detent with camming ramps which allow automatic disengagement and reengagement of the ball and head and a... | 08/04/1987 |
| 4652159 | Printer A print timing circuit for a printer has a reciprocating carriage and at least one printing element mounted on the carriage. The print timing circuit includes a carriage controller for reciprocating the carriage and an encoder for detecting the speed of m... | 03/24/1987 |
| 4613246 | Printer with mounting structure for print head A printer having a print head with a mounting portion, and a carriage with a supporting structure engaging the mounting portion of the print head to hold it in place on the carriage. The supporting structure includes a lateral positioning portion for posi... | 09/23/1986 |
| 4613245 | Device for controlling the carriage return of a lead screw driven printing head Disclosed is a travelling control of printing head in which when a printing head is to be returned to its home position, the printing head is returned in a selected one of two modes, the first mode being such that a lead screw is reversely rotated upon co... | 09/23/1986 |
