Image Forming Apparatus Having a Function for Adjustment of Image Forming Conditions

An adjustment controller configured to control execution of an adjustment to be executed for correcting a pre-selected adjustable image forming condition in an image forming apparatus, said adjustment being executed based on a measurement of an image formed by said image forming apparatus, said adjustment controller comprising:

• an acquisition portion configured to obtain a plurality of kinds of variation values, which individually indicate a different state variation capable of involving a state change in said pre-selected adjustable image forming condition;
• a calculation portion configured to calculate a complex evaluation of a current state of said pre-selected adjustable image forming condition based on said plurality of kinds of variation values;
• and
• a determination portion configured to determine a starting time for execution of said adjustment based on said complex evaluation.

An adjustment control method for controlling execution of an adjustment to be executed for correcting a pre-selected adjustable image forming condition in an image forming apparatus, said adjustment being executed based on a measurement of an image formed by said image forming apparatus, said adjustment control method comprising:

• obtaining a plurality of variation values individually indicating a different state variation in said image forming apparatus, capable of involving a state change in said pre-selected adjustable image forming condition;
• calculating a complex evaluation of a current state of said pre-selected adjustable image forming condition based on said plurality of kinds of variation values;
• and
• determining a starting time for execution of said adjustment based on said complex evaluation.

A computer program product including an adjustment control program embodied on a computer-readable medium and operable to implement an adjustment control method on a computer connected to an image forming apparatus, said computer being capable of executing said adjustment control program for implementing said adjustment control method for controlling execution of an adjustment to be executed for correcting a pre-selected adjustable image forming condition in said image forming apparatus, said adjustment control program comprising:

• code for obtaining a plurality of variation values individually indicating a different state variation in said image forming apparatus, capable of involving a state change in said pre-selected adjustable image forming condition;
• code for calculating a complex evaluation of a current state of said pre-selected adjustable image forming condition based on said plurality of kinds of variation values;
• and
• code for determining a starting time for execution of said adjustment based on said complex evaluation.