Recording head and recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorHideyuki Ueki
Life of this patent
Estimating the term…
Abstract
Provided is a recording head including: a recording element; a delay circuit including a delay element and configured to supply a clock signal from a main body unit of a recording apparatus to the delay element; and a logical sum (OR) element configured to generate a clock state signal based on a logical sum of the clock signal and output from each delay element. The recording head detects a defect in the clock signal transmitted from the main body unit to the recording head based on the clock state signal, and sets the recording element to a disable state when a defect is detected in the clock signal.
Claims17
A recording head, which includes a recording element, and is configured to perform recording on a recording medium by driving the recording element based on a first clock signal transmitted from a main body unit of a recording apparatus via a cable,
- the recording head comprising:
- a first generation unit configured to generate a second clock signal by shifting a phase of the first clock signal by at least one-half phase;
- a second generation unit configured to generate a logical sum signal based on a logical sum of a plurality of signals including the first clock signal and the second clock signal;
- and
- a detection unit configured to detect whether a wire break has occurred in the cable based on the logical sum signal.
A recording head, which includes a recording element, and is configured to perform recording on a recording medium by driving the recording element based on a first clock signal transmitted from a main body unit of a recording apparatus via a cable,
- the recording head comprising:
- a first generation unit configured to generate a second clock signal by shifting a phase of the first clock signal by at least one-half phase;
- a second generation unit configured to generate a logical sum signal based on a logical sum of a plurality of signals including the first clock signal and the second clock signal;
- and
- a control unit configured to control heating of the recording element based on the logical sum signal.
Dependencies are inferred from the claim text.