Paper feed apparatus for typewriters or business machines having a paper levelling gap disposed in the paper guidance channel
May 16, 2004. 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 3722773 3860234 3875860 Apparatus for sensing when paper utilized in a printer has been depleted Printer for data-processing machine having single operator station Multiple bill detector for currency dispensers Overlapping feed detection device in sheet-processing machine Apparatus for detecting the passage of multiple superposed documents along a feed path Drive and printing mechanism for a franking machine Print wheel mounting arrangement for print head and ribbon cartridge assembly InventorApplicationNo. 06/610866 filed on 05/16/1984US Classes:400/708, Including detector of record-medium101/233, Article-controlled machines226/100, WITH ALARM, SIGNAL, OR INDICATOR226/45, Detector means271/263, To activate an electric circuit400/54, SAFETY SWITCH OR CONDITION-RESPONSIVE-CUTOFF SWITCH FOR ELECTRICALLY POWERED TYPEWRITER400/622With holder for single sheet (e.g., clip, backing sheet, etc.)ExaminersPrimary: Pieprz, WilliamAttorney, Agent or FirmInternational ClassesB41J 11/20 (20060101)B41J 15/18 (20060101) Foreign Application Priority Data1983-06-01 DEAbstractA paper feed apparatus for line printer means for the transport of single-ply and multi-ply paper contains a paper levelling gap in the ingress region of the paper guidance channel. The paper levelling gap consists of a stationary part and of a slide capable of excursion relative to said stationary part, with said slide communicating with a sensing means. Given transgression of a prescribed slot width due to buckling of the multi-ply paper, the paper feed is interrupted via the sensing means and a warning light is actuated.Field of SearchExcess-thickness sensor | |
