Abstract: A screen printing apparatus includes a printing execution unit that performs screen printing on a substrate. At least one substrate support table that is provided movably along a specific direction orthogonal to the conveying direction. A table drive mechanism that moves the substrate support table at least between substrate entry and exit positions along a specific direction. The substrate entry and exit positions are set asymmetrically with respect to the specific direction. A printing execution unit drive mechanism is provided to drive the printing execution unit along the specific direction. A control unit is provided to control the printing execution unit drive mechanism so that the printing execution unit is driven to set the printing position on a substrate conveying path needed for the substrate support table to move from the substrate entry to the substrate exit.

Abstract: A coolant circuit circulates coolant between an internal combustion engine and a radiator of a vehicle and is provided with a thermostat. A control unit obtains radiator side released heat amount information, which indicates the amount of heat released from coolant through the radiator or information relevant to the amount of heat released from the coolant through the radiator. The control unit determines whether a thermostat open state abnormality exists by determining whether a predetermined thermostat abnormal time correlation exists between the radiator side released heat amount information and a vehicle speed of the vehicle in a warm-up incomplete temperature range of the coolant.

Abstract: A coolant circuit circulates coolant between an internal combustion engine and a radiator of a vehicle and is provided with a thermostat. A control unit obtains radiator side released heat amount information, which indicates the amount of heat released from coolant through the radiator or information relevant to the amount of heat released from the coolant through the radiator. The control unit determines whether a thermostat open state abnormality exists by determining whether a predetermined thermostat abnormal time correlation exists between the radiator side released heat amount information and a vehicle speed of the vehicle in a warm-up incomplete temperature range of the coolant.

Abstract: Two different flows for air-fuel mixture are formed by two different variational amounts for changing the air-fuel ratio of the mixture. Response delay times for different exhaust gas flows are measured as time periods from a first time point at which the air-fuel ratio of the mixture is changed to a second time point at which an output of an oxygen sensor is changed. The oxygen sensor is provided in an exhaust pipe of an engine at a downstream side of an exhaust gas purifying catalyst. A difference between the two response delay times is compared with a predetermined threshold value to carry out the diagnosis for the catalyst deterioration.

Abstract: The present invention provides a vehicle-mounted video communication system being characterized in that the wiring between a plurality of image pickup devices and a plurality of video processing devices can be simplified, the total length of cables can be reduced, and the respective devices can be reduced in size.

Abstract: A valve freeze control apparatus for an internal combustion engine includes a concentration sensor, a valve, a freeze control device, and a start determination unit. The concentration sensor is adapted to detect an alcohol concentration of fuel supplied to the internal combustion engine. The valve is provided in one of an intake passage and an exhaust passage of the internal combustion engine, wherein the valve controls flow of air that passes through the one of the intake and exhaust passages. The freeze control device is adapted to limit malfunction of the valve caused by freeze of water in exhaust gas, and the water has been attached to the valve. The start determination unit determines to start the freeze control device when the alcohol concentration detected by the concentration sensor is equal to or greater than a reference value.

Abstract: An engine control apparatus feedback-controls a mixture air-fuel ratio of air-fuel mixture supplied to each cylinder of the engine based on an exhaust air-fuel ratio detected by an air-fuel ratio sensor. The control apparatus further calculates an exhaust air-fuel ratio change rate at every predetermined interval and integrates an absolute value of the exhaust air-fuel ratio change rate. The control apparatus determines an abnormality in any one of engine cylinders when an integration value of the exhaust air-fuel ratio change rate exceeds a predetermined reference value.

Abstract: An engine start is beforehand detected when a preparation operation to engine start is detected. When the preparation operation is detected based on a seat switch indicating that a driver seats himself on a driver seat, control of an electric current for a heater of an air/fuel ratio sensor is started. The air/fuel ratio sensor is then activated prior to the engine start. Failure diagnosis is conducted on a function for detecting the preparation operation. Namely, the seat switch is diagnosed as having failure, for instance, by the following. Even while a vehicle travels, the seat switch is in an OFF state indicating that no driver is seated. This structure can restrict the engine start without the air/fuel ratio sensor being pre-heated. It can also restrict deteriorating of emission.

Abstract: A door mirror retraction switch apparatus is configured to include a switch case, an insulator in which an actuator is disposed movably which is provided in an interior of the switch case in such a manner as to be surrounded by the switch case, and a lock mechanism, and a guide portion of the lock mechanism is formed in the insulator in such a manner as to have an opening which is made to open to an external surface of the insulator at one end thereof and to extend inwards of the insulator in a groove-like fashion from the opening, a lock member is movably inserted into the guide portion, and the opening of the guide portion is made to be closed by the switch case.

Abstract: An engine control apparatus feedback-controls a mixture air-fuel ratio of air-fuel mixture supplied to each cylinder of the engine based on an exhaust air-fuel ratio detected by an air-fuel ratio sensor. The control apparatus further calculates an exhaust air-fuel ratio change rate at every predetermined interval and integrates an absolute value of the exhaust air-fuel ratio change rate. The control apparatus determines an abnormality in any one of engine cylinders when an integration value of the exhaust air-fuel ratio change rate exceeds a predetermined reference value.

Abstract: In an optical communications module comprising one or more dielectric substrates equipped with an optical transmitter section, an optical receiver section or an optical transceiver section, and a chassis encasing all of them, a metal part is formed on one side of at least one of the dielectric substrates such that the metal part constitutes the whole or a part of the exterior surface of the chassis so that the length of heat conduction from a dielectric substrate with heat-generating components installed thereon can be minimized so as to efficiently release heat through the metal part to outside, curbing a temperature increase within the chassis. Thus, the optical communications module can exhibit excellent performance.

Abstract: In a switch device including: a push button disposed in an opening of a switch case and operable to be tilted in any one of a plurality of directions by being pushed at an outer edge side; a rubber contact that forces the push button to a position before pushing; and a movable contact and a fixed contact connectable to each other by each pushing operation on the push button, a convex portion and a concave portion that can be spaced apart from each other are separately provided to the push button and the switch case for rotational support and positional regulation of the push button with respect to the switch case at the time of a tilting operation by each pushing.

Abstract: In a switch device including: a push button disposed in an opening of a switch case and operable to be tilted in any one of a plurality of directions by being pushed at an outer edge side; a rubber contact that forces the push button to a position before pushing; and a movable contact and a fixed contact connectable to each other by each pushing operation on the push button, a convex portion and a concave portion that can be spaced apart from each other are separately provided to the push button and the switch case for rotational support and positional regulation of the push button with respect to the switch case at the time of a tilting operation by each pushing.

Abstract: In an optical communications module comprising one or more dielectric substrates equipped with an optical transmitter section, an optical receiver section or an optical transceiver section, and a chassis encasing all of them, a metal part is formed on one side of at least one of the dielectric substrates such that the metal part constitutes the whole or a part of the exterior surface of the chassis so that the length of heat conduction from a dielectric substrate with heat-generating components installed thereon can be minimized so as to efficiently release heat through the metal part to outside, curbing a temperature increase within the chassis. Thus, the optical communications module can exhibit excellent performance.

Abstract: A fuel evaporation control system is connected to an engine control system in which an air-fuel ratio in mixture gas supplied to an engine is controlled to an optimum level. Fuel evaporated from a fuel tank is absorbed by a canister, and the absorbed fuel is purged into the engine. Deterioration of the canister in its air-permeability is detected based on measured pressure in the fuel evaporation control system or calculated density in the purge gas, both the pressure and the density being measured or calculated under two different amounts of purge gas flow. Deterioration of the canister in its fuel-absorbing ability is also detected based on the purge gas density.

Abstract: An optical communication module includes (a) at least one light-emitting device, at least one light-receiving device, or a combination of these; (b) an optically coupling means coupled optically with the device or each device; (c) an electric-circuit part connected to the device or each device; (d) multiple layers of electroconductive media supporting the device or devices, the optically coupling means or these optically coupling means, and the electric-circuit part or parts; and (e) a connector portion formed at the end portion of each of the electroconductive media. The insertion of the next-stage circuit substrate between the connector portions enables the electrical connection between the module and the next-stage circuit substrate having a multitude of leads without requiring a large space. An insulating spacer placed between the layers of the electroconductive media secures the electrical and thermal insulation. The module has a property of high-speed response.

Abstract: An engine start is beforehand detected when a preparation operation to engine start is detected. When the preparation operation is detected based on a seat switch indicating that a driver seats himself on a driver seat, control of an electric current for a heater of an air/fuel ratio sensor is started. The air/fuel ratio sensor is then activated prior to the engine start. Failure diagnosis is conducted on a function for detecting the preparation operation. Namely, the seat switch is diagnosed as having failure, for instance, by the following. Even while a vehicle travels, the seat switch is in an OFF state indicating that no driver is seated. This structure can restrict the engine start without the air/fuel ratio sensor being pre-heated. It can also restrict deteriorating of emission.

Abstract: The electric circuit unit has a module having an electric or optical signal processing function. Between two parallel circuit boards, the module is bonded thereto and has an electric connection structure or an optical connection structure. This provides a small-size electric circuit unit with component elements mounted at high density.

Abstract: A fuel evaporation control system is connected to an engine control system in which an air-fuel ratio in mixture gas supplied to an engine is controlled to an optimum level. Fuel evaporated from a fuel tank is absorbed by a canister, and the absorbed fuel is purged into the engine. Deterioration of the canister in its air-permeability is detected based on measured pressure in the fuel evaporation control system or calculated density in the purge gas, both the pressure and the density being measured or calculated under two different amounts of purge gas flow. Deterioration of the canister in its fuel-absorbing ability is also detected based on the purge gas density.

Abstract: The electric circuit unit has a module having an electric or optical signal processing function. Between two parallel circuit boards, the module is bonded thereto and has an electric connection structure or an optical connection structure. This provides a small-size electric circuit unit with component elements mounted at high density.