Canon Kabushiki Kaisha

Agency of Industrial Science and Technology

Nissan Motor Company Limited

Kazuyuki Maeda

Fujio Mizukami

Hideo Taka

Shuichi Niwa

Makoto Toba

Junichi Mine

Tsuyoshi Shibata

Hitoshi Tsuboi

Kazuki Konishi

Yasuhiko Shiomi

Kiyoshi Alyfuku

Hidenori Taniguchi

Hiroshi Arita

Yoshimichi Kiyozumi

Kazuo Shimizu

The present invention makes it possible to print a good quality image even if ink is ejected abnormally from a nozzle. To attain this, when there is an abnormal nozzle (N) exhibiting an abnormal ink ejection state, the printing data corresponding to the abnormal nozzle (N) is added to the printing data corresponding to neighboring nozzles (N&#x2212;1) and (N+1) arranged in the neighborhood of the abnormal nozzle (N). In this way, the printing data corresponding to the abnormal nozzle (N) can be compensated.

Inkjet printing method and inkjet printing apparatus

An ignition control apparatus for an engine; in particular, an engine having two or more igniter plugs per cylinder energized by a electric power source, comprises a voltage detector for detecting a voltage of the electric power source, and a controller configured to effect initial combustion using both igniter plugs, to determine whether the voltage is lower than a first threshold voltage, and to effect further combustion using one of the igniter plugs when the voltage detected by the voltage detector is determined to be lower than the first threshold voltage.

Ignition control apparatus for an engine

An ink-jet head having a plurality of discharge openings for discharging ink therefrom, and an ink chamber which communicates with the discharge openings is driven so as to achieve stable ink discharging operation, by preventing meniscus vibration caused by resonance of the meniscus surface of the ink at the discharging openings in response to the pressure wave which is produced in the ink chamber due to changes in pressure in the ink chamber resulting from the ink discharging operation. More specifically, the driving timing of the ink-jet head is adjusted in a time division manner within a predetermined driving period.

Ink-jet recording apparatus and driving method for ink-jet recording head

A focusing device has a first unit for producing information for focusing an optical unit and a second unit for forming, based on a predetermined number of pieces of the information derived from the first unit, an operation instruction signal for operating the optical unit. The second unit, when an actuating signal is input while a number of pieces of information from the first unit is still smaller than the predetermined number, forms the operation instruction signal based on a smaller number of pieces of information than the predetermined number.

Focusing device

An image taking apparatus changing a size of the image receiving area based on a detected visual axis includes structure for detecting that a visual axis of an operator of the apparatus is directed to a mark lying in a viewfield. Image pickup structure is provided for receiving an image of an object in the viewfield, and for outputting electrical signals corresponding to the received image, the image pickup structure having an image receiving area from which the electrical signals are generated. Structure is provided for changing the size of the image receiving area of the image pickup structure when the visual axis is directed to the mark.

Image-taking apparatus changing the size of an image receiving area

A process includes a step of melting aluminium alkoxide in hexylene glycol (2-methyl 2,4-pentonediol). Then, the solution is subject hydrolysis. During this, hydrolysis and dehydrating condensation of hexylene glycol is controlled by alkoxide. This is found effective for obtaining alumina having uniform porous structure with high specific surface area.

Process for producing alumina with high specific surface area

An apparatus that measures the distance to an object by projecting light, receiving reflected light of the projected light through at least two light receiving devices disposed at different positions, and combining information from the two light receiving device to cancel, the influence of a change in the centroid position of the reflected light at the same distance. The apparatus has a signal processor performs a first processing operation for determining the distance to the object by combining information from the two light receiving devices, and a second processing operation for determining the distance to the object using information from only one of the two light receiving devices.

Range finder

There is disclosed a crystalline aluminum organophosphate stable against heating, composed of a skeleton structure having micropores therein and represented by the following formula (I) in chemical composition:

Crystalline aluminum organophosphate

An active type distance measuring apparatus is provided with sensors for a plurality of distance measuring fields, and, in performing multi-point distance measuring, obtains distance information in a macro region on the basis of outputs from at least two sensors used for different distance measuring fields.

Active distance measuring apparatus

A distance measurement device includes a light projection unit for projecting light towards plural objects in different areas of a scene to measure respective distances to the objects. A photo-sensing unit receives reflected light from the different areas of the scene. Also provided is a processing unit which has a first mode and a second mode. The first mode is for measuring the respective distances to the objects based on a first photo-sense output of the photo-sensing unit corresponding to light projected to the different areas of the scene and reflected by the objects. The second mode is for judging, based on a second photo-sense output of the photo-sensing unit corresponding to light projected to a specific area and reflected by at least one of the objects, whether the at least one object is located outside of a distance measuring area within which a distance to the at least one object can be measured using the first mode. A selecting unit selects one of the first and second modes such that the first and second modes operate independently of each other.

Distance measurement device having a mode for measuring an extremely

A distance measuring apparatus includes a light projecting device for projecting a light toward an object, a first light receiving device for receiving reflected light from the object; a second light receiving device for receiving light which is reflected by glass positioned between the distance measuring apparatus and the object; a distance calculator device for evaluating an output from the first light receiving device to calculate a distance to the object; and a distance information evaluator device for detecting a presence of glass based on an output from the second light receiving device, and for setting predetermined distance information, irrespective of the distance to the object calculated by the distance calculator device, when the presence of glass is detected.

Distance measuring apparatus

A camera includes an abnormal state detecting circuit for detecting an abnormal state of the camera, a counter for counting the number of times for which the abnormal state of the camera is detected by the abnormal state detecting circuit, and a setting instruction circuit for setting the camera into an operation inhibiting mode in response to a counted value of the counter when the abnormal state of the camera has been detected by the abnormal state detecting circuit a predetermined plural number of times.

Camera

This invention discloses a camera capable of being remote-controlled by a remote control signal, comprising a memory for storing a distance information in response to the operation of an operating member, and a control circuit for permitting the memory to hold the distance information stored in the memory in response to the setting to enable remote control by the remote control signal even after the operation of the operating member was cancelled.

Camera capable of being remote-controlled

A process for preparing a cordierite, which includes dissolving a silicon compound, an aluminum compound and a magnesium compound in a molar ratio of 1:0.7 to 1:0.3 to 0.5 in a complexing agent represented by the formula R(OCH.sub.2 CH.sub.2).sub.n OH, wherein R is an alkyl group and n is an integer of 1 to 4; heating the resulting solution to bring about a ligand exchange reaction of the silicon compound, aluminum compound and magnesium compound with the complexing agent; conducting hydrolysis to form a gel; drying the gel and sintering the dried gel at 800.degree. to 1450.degree. C.

Process for preparing cordierite

A process of production of alumina includes method for controlling specific surface area of alumina. Control of specific surface area is performed by controlling porous structure of alumina. In the process, aluminum alkoxide is subject hydrolysis for forming alumina sol. During hydrolysis process, polyether is used as organic solvent in order to control the porous structure of produced alumina.

Growing community of inventors

Yokohama, Japan

Kazuyuki Maeda