×

Non-impact printer with token bit control of data and current regulation signals

  • US 5,126,759 A
  • Filed: 06/26/1990
  • Issued: 06/30/1992
  • Est. Priority Date: 06/26/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A non-impact printer apparatus comprising:

  • a recording head having a plurality of recording elements for recording on a recording medium;

    driving means for selectively driving said plurality of recording elements in accordance with respective image data signals;

    data bus means for carrying multibit image data signals and for carrying on one line that is also used for carrying image data signals, a multibit digital signal used for regulating current;

    said driving means including a plurality of data register means with respective data register means being associated with each recording element for storing said image data signals;

    means for commonly connecting said data bus means to said plurality of data register means;

    means for generating a token bit signal;

    a multistage shift register means for outputting sequentially at respective stages the token bit signal for sequentially selecting a respective data register means for accepting image data signals;

    said driving means further including current regulating means for regulating a level of electrical current to each recording element, the current regulating means including means for adjusting a level of electrical current to each recording element in response to the multibit digital signal used for regulating current, and wherein the current regulating means further includes first register means including a plurality of registers for storing a multibit digital signal related to a level of current control, second register means for storing and shifting a token bit signal and means responsive to a token bit signal in said second register means for latching in an appropriate register of said first register means a digital signal found on said data bus means.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×