Card Modifier To Prevent Superposed Records Patents (Class 346/85)
  • Frequency optimized ink jet printer
    Patent number: 5461401
    Abstract: Ink jet printers used for printing large characters employ a separate solenoid valve for each drop stream which forms part of a printhead matrix. By optimizing the frequency response of the nozzle/valve sub system (primarily the connecting tubing), higher operating frequencies can be obtained. It has been found that a ratio of six to one between subsystem resonant frequency and operating frequency provides greatly improved printing.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: October 24, 1995
    Assignee: Videojet Systems International, Inc.
    Inventors: Dilip K. Shrivastava, Pietro C. Lostumbo
  • Time recorder registration apparatus
    Patent number: 4422079
    Abstract: An apparatus for registering cards for printing in time recorders and the like uses a punch and die to form perforations which are co-linear with the printed information on the card. The perforations are sensed on subsequent insertions of the card and are used to prevent further insertion of the card and register the card in position so that each printing on the card will be made below previous printings.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: December 20, 1983
    Assignee: Simplex Time Recorder Co.
    Inventor: George Franke
  • Method and device for time-recording
    Patent number: 4227199
    Abstract: A double check or safety system for recording information of two types on a record sheet, such as a time clock card. One type of information is applied automatically to a first predetermined area of the record sheet when the sheet is inserted into a machine, such as the entrance time and exit time stamped onto the record sheet by a time clock. The other type of information is applied manually by the operator, such as a signature applied by the operator to a second predetermined area of the record sheet associated with the time stamp area.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: October 7, 1980
    Inventor: Stephen R. Sharkey