Ink Jet Printing Method
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
U.S. Patent 4,097,873 describes a method of obtaining dual-resolution documents from an ink jet printing system having at least two sets of multiple linear arrays. The present article describes an alternate method of achieving dual-resolution documents from an ink jet printing system having a single set of multiple linear arrays. The present method allows a reproduced document to contain both high and low resolution print elements. This is accomplished by changing the velocity of the drop generator relative to the velocity of the printing substrate while also selecting whether a plurality of drops or a single drop is used to print each spot. A fast relative velocity is necessary for low the maximum resolution is obtained using the lower relative velocity and only single drops per spot.