Patent ID: 8284225
Filing Date: 2012-10-09
Classification: B41J

Abstract:
1. A printer comprising: a line head having an array of plural elements; a shift register circuit that shifts input data input from an input terminal according to a clock signal; a latch circuit that temporarily stores the input data of the shift register circuit according to a latch signal; a driver that outputs the input data held by the latch circuit to the elements of the line head according to a strobe signal; an output terminal that outputs output data from the shift register circuit according to the clock signal; a head control unit that outputs the clock signal, the input data, the strobe signal, and the latch signal; an element count detection data generating unit that generates element count detection data for detecting the number of elements in the line head, and outputs to the input terminal of the shift register circuit synchronized to the clock signal output by the head control unit; and an element number counting unit detects the number of elements in the line head based on the element count detection data outputted from the output terminal.