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| Number | Title | Issue Date |
| 6409321 | Modular printer/plotter with controllable printhead/media spacing in three degrees of freedom A modular printer chassis, particularly for large scale printers, includes a lower media module which provides a rigid platen media support surface connected to an upper scanning carriage support module by a plurality of fasteners which are tightened at t... | 06/25/2002 |
| 4600319 | Control for dot matrix printers operating in harsh environments A control processing method and apparatus for dot matrix printers which are ubjected to relatively high levels of vibration and shock. Vibration and shock are detected and, in the event that a known safe vibration or shock level is exceeded, print line dat... | 07/15/1986 |
| 4493570 | Control system for impact printer In an impact printing apparatus including a carriage which carries a rotary type element, the length of time required for a motor drive system for the carriage stop hunting and stabilize at a desired printing position depends on variables including the di... | 01/15/1985 |
| 4462708 | Automated tape lettering machine An improved dry lettering printing machine of the type having a printing station, a rotatable disc or type font having embossed characters on the disc and a means for causing the machine to execute a print cycle which includes providing a color carrying r... | 07/31/1984 |
| 4283150 | Typewriter An electric typewriter having a prevention mechanism for preventing printing errors caused by a depression of a few keys in very rapid succession. The prevention mechanism includes a lock member for locking a clutch, which is interposed between a drive mo... | 08/11/1981 |
| 4235554 | Keyboard signal storage mechanism A coded electric signal generating keyboard for a single element typewriter is disclosed which has a keylever signal storing function and includes an interlock mechanism for permitting only one interposer at a time to be moved out of its normal position. ... | 11/25/1980 |
| 4198169 | Type disc printer An electromechanical printer having characters of a type font located on radial spokes of a circular type disc is disclosed. The type disc is normally arrested and connected to be driven about its axis by a unidirectional motor source via a slip clutch. S... | 04/15/1980 |
| 4087852 | Microprocessor for an automatic word-processing system The keyboard, printer and recording means are peripheral units under the control of a microprocessor including a programmable read-only memory from which appropriate control instructions are derived. Control signal sequences for operating the word process... | 05/02/1978 |
| 3963340 | Imaging apparatus for typewriter employing electrostatic printing process Imaging apparatus which employs MANIFOLD imaging techniques and reusable loops to create a marking material image and transfer it to a receiving medium. The apparatus may be employed in a printer having keyboard input and an elongate platen supporting a r... | 06/15/1976 |
