Print medium handling system including cockle springs to control pen-to-print medium spacing during printing
February 28, 2014. 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 3673960 3915281 Dot matrix impact printer having retractable platen Printer having swingable printing rings Paper feed mechanism with varying contact pressure Paper feed apparatus for typewriters or business machines having a paper levelling gap disposed in the paper guidance channel Printer comprising spring biased print head and roller platen Printer with drive on swinging platform Single sheet ink-jet printer with passive drying system Ink-set printhead-to-paper referencing system InventorsApplicationNo. 203113 filed on 02/28/1994US Classes:400/642, Including sheet guide (e.g., for sheet insertion, etc.)271/209, With means to bow sheets347/8, Of spacing between fluid ejector and receiving medium347/104, Physical handling400/578SHEET OR WEB (E.G., RECORD-MEDIUM FEEDING MECHANISM)ExaminersPrimary: Burr, Edgar S.Assistant: Nguyen, Anthony H. International ClassB41J 013/10AbstractA printer mechanism to control pen-to-print medium spacing during printing is described. The preferred embodiment of the mechanism includes a printhead and an adjacent platen. The platen includes differentially yieldable structure adapted to resiliently support the print medium thereby to inhibit uncontrolled bending of the print medium during printing. The yieldable structure preferably extend along a line generally perpendicular to a direction of feed of the print medium. The platen may further include a transition region located adjacent the yieldable structure, the transition region adapted to facilitate smooth transition of the leading edge of the print medium onto the yieldable structure.Field of SearchIncluding sheet guide (e.g., for sheet insertion, etc.)Sheet table at delivery side of platen PLATEN OR PLATEN-MOVING MECHANISM Bar (i.e., line size) platen For feeding web record-medium By friction-feed means (e.g., reciprocating finger or gripper or pinch roller, etc.) SHEET OR WEB (E.G., RECORD-MEDIUM FEEDING MECHANISM) For feeding sheet from stack or pack holder Including web guiding or aligning (e.g., laterally, relative to print-line, etc.) INCLUDING ADJUSTMENT FOR OPTIMUM PRINTING PLANE Responsive to thickness of record-medium By adjustment of carriage (e.g, carriage-guide rollers) RECORD RECEIVERS AND/OR DRIVING MEANS THEREFOR Means to bow sheets during delivery With means to bow sheets | |
