Head device, ink jet printing device, and driving voltage adjustment method

An ink jet printing device comprising:

• an ink jet head including a plurality of head modules;
• and
• a driving voltage supply device that includes one or more processors and supplies a driving voltage to the ink jet head, the driving voltage corresponding to a target jetting amount for each head module,
• wherein the processor is configured to:
• acquire a module characteristic from one or more memories, the module characteristic representing an initial voltage coefficient associated with each head module,
• acquire an ink characteristic from the one or more memories, the ink characteristic representing a characteristic of ink applied to printing using the ink jet head,
• acquire a jetting amount for each head module from the one or more memories, the jetting amount being measured by applying defined ink,
• derive a first voltage coefficient for adjusting the driving voltage based on the module characteristic and the ink characteristic, the first voltage coefficient being derived based on the jetting amount for each head module, and
• adjust the driving voltage supplied to the ink jet head by applying the first voltage coefficient for each head module.

A driving voltage adjustment method of adjusting a driving voltage applied to an ink jet head including a plurality of head modules, the driving voltage corresponding to a target jetting amount for each head module, the method comprising:

• acquiring a module characteristic from one or more memories, the module characteristic representing an initial voltage coefficient associated with each head module;
• acquiring an ink characteristic from the one or more memories, the ink characteristic representing a characteristic of ink applied to printing using the ink jet head;
• acquiring a jetting amount for each head module from the one or more memories, the jetting amount being measured by applying defined ink,
• deriving a first voltage coefficient for adjusting the driving voltage based on the module characteristic and the ink characteristic, the first voltage coefficient being derived based on the jetting amount for each head module;
• and
• adjusting the driving voltage supplied to the ink jet head by applying the first voltage coefficient for each head module.