| CPC B41J 2/155 (2013.01) [B41J 2002/14491 (2013.01)] | 14 Claims |
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1. A controller comprising a plurality of control circuits configured to be connected to respective ones of a plurality of head units, each of the plurality of head units having a nozzle, the plurality of head units including a first head unit,
the plurality of control circuits including:
a first control circuit, the first control circuit including a first interface for connecting to the first head unit;
a second control circuit connected to the first control circuit in series to perform communication; and
a third control circuit connected to the second control circuit in series to perform communication,
the first control circuit being configured to:
receive basic data for controlling at least one of the plurality of head units, the basic data including first head data for controlling the first head unit;
transmit the first head data to the first interface;
delete the first head data from the basic data; and
transmit first data to the second control circuit, the first data being obtained by deleting the first head data from the basic data, the first data being data for controlling at least one of the plurality of head units,
the second control circuit being configured to transmit second data to the third control circuit, the second data being data for controlling at least one of the plurality of head units,
a data amount of the second data being smaller than a data amount of the first data.
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