Methods and systems achieving print uniformity using reduced memory or computational requirements

Method of 12, where the aim RC is derived from the average of all response curves over the space of desired uniformity.

Method of 12, where the aim RC is derived from the average of all response curves in the vicinity of wherein other process controls sense a printer response to maintain print density over time.

Method of 13, wherein determination of the aim RC includes identification of an RC Dmax for RCs across the space of desired uniformity, wherein the aim RC Dmax is the maximum density achievable for the weakest responding point in the space of desired uniformity.

Method of 13, wherein determination of the aim RC includes identification of an RC Dmin , wherein RC Dmin is the minimum density achievable for the engines with the poorest capability for developing small halftone dots.

A System for implementing uniformity compensating RCs in a digital printer, comprising:

• a sensor adapted to measure a collection of response curves over the space of desired uniformity;
• a controller adapted to select a subset of orthogonal bases vectors that represent the response curves measured by the sensor;
• printing hardware under direction of the controller, said printing hardware adapted for applying uniformity compensating RCs to a digital image undergoing printing, wherein the uniformity compensating RCs are based on the subset of basis vectors of the response curves.

An active compensation method for streak compensation comprising:

• modifying digital input images with spatially dependent response curves (RCs), said spatially dependent RCs compensating for a non-uniform engine response such that each gray level throughout a printable space is printed at desired values.