Browse Prior Art Database

Printer Head Control Command Look-Ahead and Overlap

IP.com Disclosure Number: IPCOM000061107D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Cavill, BR [+details]

Abstract

A technique is described whereby an algorithm used in conjunction with a print mechanism control microprocessor (PMCM) and a head control microprocessor (HCM) provide an overlap of print head movement commands and a look-ahead feature. Early notification of print head movement, through the use of an anticipation algorithm, permits directional and speed changes of the print head to take place while the head is operating under a previous instruction. This look-ahead and overlap command function provides for faster printer throughput and provides smooth operation, since repeated stopping of the print head to await instructions is eliminated. In prior art, print head mechanisms were required to complete their individual instruction and come to a stop before proceeding with the next instruction.