Canon Kabushiki Kaisha

Hideyuki Ueki

Satoshi Yamamoto

Shinya Ishikawa

Hironori Naka

Yuta Shinsawatsu

Kotaro Kimoto

Yosuke Ezumi

Takuhiro Ogushi

Yukinori Nishikawa

Takahiro Aida

A power supply control apparatus comprises a first power supply supplying power to a controller and a second power supply supplying power to an operation unit and a power controller. The operation unit receives an operation for switching the first power supply on and off. The power controller is operable to turn on the first power supply according to the signal from a timer or the operation by the operation unit, and to turn off the first power supply according to a state of the controller. The controller, upon at least either of the operation by the operation unit or the signal from the timer, performs a setting to the timer of a time at which to turn on the power from the first power supply or a time at which to turn off the power from the first power supply.

Power supply control apparatus, method and recording apparatus

An electronic device inputs a voltage from each of a first and a second constant voltage sources, amplifies the inputted voltage, and converts the inputted voltage or a voltage amplified by an amplifier into a digital value. Using a first and a second digital values based on the inputted voltage, and a third and fourth digital values based on the inputted, amplified and converted voltage, an amplification factor of the amplifier and an offset voltage of the amplifier are calculated, and the amplifier is corrected based on the calculated amplification factor and offset voltage.

Electronic device and printing apparatus having correction unit that corrects an amplifier

An ink jet printing apparatus comprises a controller and a printhead control unit positioned between the controller and the printhead and configured to control the printhead upon an instruction from the controller. The controller comprises a control unit configured to, in a case where transmission of an instruction to the printhead control unit failed, if the instruction is an instruction included in a first communication sequence performed periodically with respect to the printhead control unit in order to control the printhead, not execute a retry of the failed instruction, and in a case where the instruction is an instruction included in a second communication sequence performed aperiodically with respect to the printhead control unit in order to control the printhead, retry the failed instruction.

Ink jet printing apparatus

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.

Recording head and recording apparatus

During attachment or detachment of an article to or from an attaching portion, a coded vibration pattern is generated by contact between the attaching portion and the article. Information about attachment or detachment of an article is acquired by detection of a vibration pattern using a vibration sensor and analysis.

Method for acquiring information about attachment of article, and printing apparatus

A data processing apparatus includes a holding unit holding a code table, in which each of the codes in the table determines the dot arrangement pattern, a determining unit determining a predetermined number of first offset values which is power of 2, the first offset values denoting a number of pixels by which an arrangement of the codes is shifted in the code table, a table generating unit, in a case where a size of the code table is not power of 2 and the determining unit determines the first offset value wherein a quotient and a remainder when the predetermined number is divided by the size is 1 or more, determining a second offset value wherein the quotient is zero, as substitute for the determined first offset value, and to generate the code table to which an offset is made with the second offset value.

Growing community of inventors

Fuchu, Japan

Hideyuki Ueki