Patent ID: 6126341
Filing Date: 2000-10-03
Classification: B41J,G06K

Abstract:
A serial recording apparatus comprising:a recording head with a plural number of dot-forming elements;a paper feeding device for feeding a recording sheet;a first image data storing device for storing image data for the plurality of dot-forming elements;a second image data storing device for storing image data for the a defective dot-forming element; anda control device for controlling the plural number of dot-forming elements so as to print in accordance with the image data read out from the first image data storing device, and for controlling the paper feeding device;wherein when one of the plural number of dot-forming elements is defective and a remainder are normal, the control device reads out the image data for the defective dot-forming element from the first image data storing device, and saves the readout image data into the second image data storing device, and selects a substitution dot-forming element from among the normal dot-forming elements, and causes the substitution dot-forming element to substitution print a location on the recording sheet which would otherwise be subjected to printing by the defective dot-forming element, in accordance with the image data read out from the second image data storing device;wherein the print of said plural number of dot-forming elements in accordance with the image data read out from the first image storing device is performed in a first operation, and the substitution printing to print only said substitution dot-forming elements is performed in a second operation.