Thermal matrix type printing head
Patent 4023184 Issued on May 10, 1977. Estimated Expiration Date: 
May 10, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 10, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3161457 3340381 3453647 3478191 3578946 3715564 3789423 3814897 3907090 InventorApplicationNo. 05/619589 filed on 10/06/1975US Classes:347/208, Specific conductor means (e.g., electrode, conducting pattern, etc.)346/139C, Stylus feature347/222Housing or mountingExaminersPrimary: Miller, George H. Jr.Attorney, Agent or FirmInternational ClassB41J 2/345 (20060101)AbstractA printer for recording images on thermally sensitive paper. It includes a head that comprises a set of longitudinally extending fingers comprising laminated highly conductive and resistive heating layers. Gaps in the electrically conductive layers traverse the fingers to form discrete printing areas in the resistive layers. An electrical current selectively passed through a finger heats the printing area therein and thereby records a dot image at a corresponding portion of the paper.Field of SearchStylus feature | |
