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Method for reducing print distortion of ink drop writing apparatus

  • US 4,430,656 A
  • Filed: 12/18/1981
  • Issued: 02/07/1984
  • Est. Priority Date: 12/19/1980
  • Status: Expired due to Term
First Claim
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1. In a method for writing information on a writing medium with ink drops which are sequentially generated, selectively charged in accordance with the information, and directed toward the writing medium so as to impinge thereon in column form for representing the information as a continuing mark formed by a sequence of charged ink drops, the improvement comprising the steps of utilizing a predetermined number of uncharged dummy drops for each column, and inserting a single uncharged dummy drop only at selected locations and in a predetermined order with respect to the drop positions for eliminating merging of adjacent charged ink drops when an uncharged dummy drop is inserted therebetween, the step of inserting including the steps of initialing determining an insertion location for inserting an uncharged dummy drop between the first and last two adjacent charged ink drops, respectively, of each sequence of charged ink drops along the column, and controlling the selective charging of the sequentially generated ink drops so as to insert the uncharged dummy drops at the determined locations of the column.

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