| Patents for B41J 9 - Hammer-impression mechanisms (955) |
|---|
| 06/18/1991 | US5024542 Magnetic actuator |
| 06/11/1991 | US5022771 Thermal printing apparatus and tape supply cartridge therefor |
| 06/04/1991 | US5021676 Document-skew detection with photosensors |
| 06/04/1991 | US5021673 Web transport with anti-skew arrangement |
| 05/28/1991 | US5018888 Paper tension adjusting device and method for a printer |
| 05/14/1991 | CA1284058C Book cover serial stamp printer |
| 05/02/1991 | WO1991006069A2 High-speed power encode module |
| 04/30/1991 | US5011309 Ribbon drive for low cost quiet impact printer |
| 04/16/1991 | US5007748 Printer for bar code using thin and thick bar code fonts |
| 04/02/1991 | US5004360 Carriage device for an electronic typewriter using a two-row daisy wheel |
| 02/26/1991 | US4995744 Dot matrix |
| 01/30/1991 | EP0410259A1 Thermal printing apparatus and tape supply cartridge therefor |
| 01/30/1991 | CN1011397B Knocking type typewriter |
| 01/29/1991 | US4988223 Matrix printing head with pivotable armatures |
| 01/24/1991 | DE3924311A1 Rebound damper for print hammer lever in typewriter or similar - uses angled section of hammer lever above DC motor ensuring rapid hammer contact in rest position |
| 01/23/1991 | EP0409627A2 Batch mode duplex printing |
| 01/23/1991 | EP0409577A1 Solenoid controlling apparatus |
| 01/23/1991 | EP0409576A1 Current controlling apparatus |
| 01/22/1991 | US4986179 Print head for dot matrix printers |
| 01/16/1991 | EP0294474B1 Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device |
| 01/16/1991 | CN1011214B Improvements in impression machine |
| 01/09/1991 | EP0406957A2 Hammer solenoid |
| 01/06/1991 | CA2020211A1 Hammer solenoid |
| 01/02/1991 | EP0405910A1 Printing recorder |
| 12/27/1990 | EP0272287B1 Printer energy control circuit |
| 12/27/1990 | CA2002738A1 Endorser hammer joint |
| 12/12/1990 | EP0402073A1 Striker device for printers |
| 12/12/1990 | EP0401881A2 Needle printhead with driving and return flap armature electromagnets |
| 12/04/1990 | US4974976 Printing hammer device |
| 11/13/1990 | CA1276126C Quiet impact printer |
| 10/31/1990 | EP0395350A2 A printing apparatus |
| 10/09/1990 | US4961376 Printer |
| 08/22/1990 | EP0383555A1 Impact dot head for a printer |
| 08/16/1990 | EP0382465A1 Drive circuit for driving a wire dot print head |
| 07/31/1990 | US4945331 Electromagnetic actuator |
| 07/31/1990 | US4944617 Encoder employing a shock absorbing tension spring |
| 07/10/1990 | US4940343 Wire-dot print head driving apparatus |
| 06/27/1990 | EP0374528A2 Improved lubrication system for print hammer mechanisms |
| 06/20/1990 | EP0373427A2 Impact printer actuator using magnet and electromagnetic coil and method of manufacture |
| 06/05/1990 | US4930911 Flat-bed heated finger daisy wheel hot debossing stamper |
| 06/05/1990 | CA1270068A1 Adaptable selection and profiling of coil currents for multiple actuator assembly |
| 05/22/1990 | CA1269339A1 Print tip contact sensor for quiet impact printer |
| 04/25/1990 | EP0364761A2 Electromagnetic actuator having improved dampening means |
| 04/17/1990 | US4918490 Batch mode duplex printing |
| 03/13/1990 | US4907901 Method and apparatus for measuring displacement of a moveable member of an electromagnetic device by using perturbations in the device's energizing current |
| 03/07/1990 | EP0356998A2 Impact dot print head |
| 02/20/1990 | US4902148 Typewriter with a print wheel and hammer driven by one motor |
| 02/13/1990 | US4900169 Print hammer damping mechanism for typewriters and like printing machines |
| 02/07/1990 | EP0353444A2 Impact printer print mechanism and method of manufacture |
| 02/01/1990 | DE3825254A1 Method and device for checking the serviceability of the print needles of a needle print head |
| 01/30/1990 | US4896596 Lubrication system for print hammer mechanisms |
| 01/17/1990 | EP0350964A2 Print hammer mechanism |
| 01/04/1990 | DE3822273A1 Adjusting device for the impression hammer of a printing mechanism in typewriters or office machines of similar design |
| 12/20/1989 | EP0347109A2 Impact mechanism for impact printer |
| 12/20/1989 | CN1006145B Electromagnetic hammer actuator for impact printer |
| 12/14/1989 | WO1989011973A1 Hammering printer head |
| 11/30/1989 | DE3917259A1 Actuating member for an impression hammer |
| 11/28/1989 | US4882987 Attaching device in a spring-charged dot printer |
| 11/21/1989 | US4881833 Drive mechanism for a small-sized printer |
| 11/14/1989 | US4880325 Ink ribbon cassette including means for identifying the type of ink ribbon contained therein and containing an ink ribbon having end indication means |
| 11/14/1989 | US4880322 Method for rebound damping of print hammer magnets in typewriters or similar office machines |
| 11/14/1989 | US4879947 Printhead which minimizes stray magnetic flux |
| 11/14/1989 | CA1262950A1 Dot matrix print head energy control circuit |
| 10/31/1989 | US4877342 Method of moving print elements in printheads and a printhead with moving mechanism for print elements |
| 10/25/1989 | EP0338638A1 Needle printer |
| 10/18/1989 | EP0337275A2 Printer paper thickness detector |
| 10/17/1989 | US4874265 Impact mechanism for impact printer |
| 10/05/1989 | WO1989009132A1 Digital printhead energy control system |
| 09/26/1989 | CA1260862A1 Quiet impact printer |
| 09/26/1989 | CA1260861A1 Impact mechanism for quiet impact printer |
| 09/19/1989 | US4867584 Impact mechanism for impact printer |
| 09/19/1989 | US4867059 Impact printer print mechanism and method of manufacture |
| 09/12/1989 | US4865475 Printer adjusting the print hammer position for precise printing |
| 09/12/1989 | CA1259272A1 Impact printer with magnetic interaction compensation |
| 09/12/1989 | CA1259222A1 Impact printer with means for adjusting the associated print hammer |
| 09/05/1989 | CA1259043A2 Method and means for microbial polypeptide expression |
| 08/29/1989 | US4861174 Device for driving print member of printer |
| 08/22/1989 | US4859096 Impact mechanism for impact printer |
| 08/15/1989 | US4856921 Rotary wheel printer |
| 08/09/1989 | EP0326781A1 Printer drive |
| 08/08/1989 | US4854756 Adaptive print hammer timing system |
| 08/08/1989 | US4854753 Printer |
| 08/08/1989 | CA1258246A1 Electromagnetic hammer actuator for impact printer |
| 08/08/1989 | CA1258198A1 Electronic printer |
| 08/01/1989 | US4852481 Print hammer mechanism |
| 07/11/1989 | US4846593 Printing apparatus system with a plurality of interchangeable type units |
| 06/27/1989 | US4842429 Type face striking system in an office writing machine |
| 06/13/1989 | US4839621 Electromagnetic actuator having improved dampening means |
| 06/13/1989 | US4838157 Digital printhead energy control system |
| 06/06/1989 | CA1255243A1 Full field magnetic ink character recognition encoder |
| 05/31/1989 | EP0318449A2 A method and an arrangement for controlling the method of operation of a matrix printer |
| 05/31/1989 | EP0318448A2 A method and arrangement for monitoring the modus operandi of matrix printers |
| 05/30/1989 | US4835655 Power recovery circuit |
| 05/30/1989 | US4833981 Field replaceable print hammer |
| 05/30/1989 | US4833980 High efficiency coil posts for print hammer actuators |
| 05/24/1989 | EP0316376A1 Matrix printing head with swinging-armature magnets |
| 05/09/1989 | US4828410 Serial print wheel impact printer |
| 04/26/1989 | EP0312772A2 Impact printer |
| 04/19/1989 | EP0311870A2 Lubrication system for print hammer pivot pin |
| 04/18/1989 | US4821639 Control for enabling flight timing of hammers during printing |