Patent ID: 8864283
Filing Date: 2014-10-21
Classification: B41J

Abstract:
1. A method for operating inkjets in a plurality of printheads in a printer to enable visual detection of one or more defective inkjets comprising: operating with a controller a substantially evenly-distributed subset of inkjets in each printhead in a first predetermined number of printheads that eject ink having a same first ink color to form a first portion of a test pattern on an image substrate; operating with the controller substantially every inkjet in each printhead in the first predetermined number of printheads that eject ink having the same first ink color to form a second portion of the test pattern on the image substrate that is immediately adjacent to the first portion of the test pattern in a process direction; operating with the controller the inkjets in each printhead in the first predetermined number of printheads that were not used to form the first portion of the test pattern to form a third portion of the test pattern on the image substrate that is immediately adjacent to the second portion of the test pattern; and moving the image substrate on which the test pattern is printed to a position where the test pattern on the image substrate can be viewed by a user.