Patent application number | Description | Published |
20090002439 | RECORDING APPARATUS - A recording apparatus scans a recording head in a main scanning direction to perform time-division driving for a plurality of blocks of recording elements to perform recording. The recording apparatus includes an obtaining unit configured to obtain information regarding inclination of the recording element array with respect to a main scanning direction, a first changing unit configured to change, in units of recording elements, based on the obtained information, storage positions of recording data items that are stored in a storage unit and that are assigned to recording elements in each of groups, each of the groups including recording elements belonging to the blocks in the recording element array which are consecutive, and a second changing unit configured to change, in units of groups, based on the obtained information, the storage positions of the recording data items in the main scanning direction. | 01-01-2009 |
20090002777 | RECORDING APPARATUS - A recording apparatus, performing recording by time-division driving of multiple recording elements on a recording head in increments of blocks, includes: a storing unit storing recording data; an obtaining unit obtaining information relating to inclination of the recording elements in the main scanning direction; a changing unit changing, in increments of recording elements, the main scanning direction storage position of recording data stored in the storing unit to be provided to recording elements of a group, configured of consecutive recording elements in each block of the recording elements, based on the obtained information; and a determining unit determining the driving order of the recording elements subjected to time-division driving in increments of the blocks, for each of the scans; wherein recording is performed based on recording data with the main scanning direction storage position having been changed by the changing unit, and the driving order determined by the determining unit. | 01-01-2009 |
20090315934 | INK JET PRINTING APPARATUS - An ink jet printing apparatus that can inhibit the possible degradation of image quality caused by variation in the conveyance amount of a print medium is provided. The ink jet printing apparatus includes a detection section detecting the conveyance amount of the print medium, and a print head position adjusting section slightly moving a print head in a conveyance direction of the print medium. The print head position adjusting section adjusts the position of the print head in the conveyance direction according to an error in the conveyance amount of the print medium detected by the detection section. Thus, printing can be performed at the head position adjusted with the error in conveyance amount taken into account. Therefore, the possible degradation of the image quality caused by a conveyance variation can be inhibited. | 12-24-2009 |
20090322819 | PRINTING APPARATUS AND OBJECT CONVEYANCE CONTROL METHOD - A printing apparatus and a conveyance control method are provided, both capable of detecting a print medium conveying state highly precisely in an entire process of conveying the print medium being printed. For this purpose, the surface of the print medium placed on the belt and the surface of the belt are detected to acquire the moving distance or moving speed of the print medium. Based on the moving distance or moving speed thus obtained, the driving of the belt is controlled. Even in a situation where the object being detected switches from the print medium to the belt in the middle of the conveying operation, the measurement of the moving distance can be performed without interruption by the same detection method using the same optical sensor unit. | 12-31-2009 |
20090323094 | CONVEYING APPARATUS AND PRINTING APPARATUS - The apparatus comprising: a mechanism for moving an object; an information acquisition unit acquiring a driving amount information of the mechanism; a sensor for capturing a surface of the object; a processing section for processing a first image data and a second image data acquired by the sensor at different timings; and a control unit for controlling the mechanism, wherein: the processing section performs processings of: (a) cutting out an image pattern of a part of the first image data; (b) limiting a search range in the second image data within which a similar region similar to the image pattern is searched; (c) searching the similar region within the limited search range in the second image data; and (d) obtaining the moving information of the object based on a positional relation between the image pattern in the first image data and the similar region in the second image data. | 12-31-2009 |
20100118080 | APPARATUS AND METHOD FOR INK JET PRINTING - The present invention provides an ink jet printing apparatus and a method for controlling temperature for the ink jet printing apparatus wherein the temperature of a print head, which may lower during printing, is controlled before printing without using any sub-heater to allow a favorable ejection condition to be established without reducing the head temperature below a predetermined value. Thus, scan width information and dot count information are acquired before a carriage starts scanning to determine the heating temperature of the print head on the basis of the information. | 05-13-2010 |
20110164261 | RECORDING APPARATUS - A recording apparatus scans a recording head in a main scanning direction to perform time-division driving for a plurality of blocks of recording elements to perform recording. The recording apparatus includes an obtaining unit configured to obtain information regarding inclination of the recording element array with respect to a main scanning direction, a first changing unit configured to change, in units of recording elements, based on the obtained information, storage positions of recording data items that are stored in a storage unit and that are assigned to recording elements in each of groups, each of the groups including recording elements belonging to the blocks in the recording element array which are consecutive, and a second changing unit configured to change, in units of groups, based on the obtained information, the storage positions of the recording data items in the main scanning direction. | 07-07-2011 |
20130106934 | INK-JET RECORDING DEVICE AND INK-JET RECORDING CONTROL METHOD | 05-02-2013 |
20130201241 | PRINTING APPARATUS AND OBJECT CONVEYANCE CONTROL METHOD - A printing apparatus and a conveyance control method are provided, both capable of detecting a print medium conveying state highly precisely in an entire process of conveying the print medium being printed. For this purpose, the surface of the print medium placed on the belt and the surface of the belt are detected to acquire the moving distance or moving speed of the print medium. Based on the moving distance or moving speed thus obtained, the driving of the belt is controlled. Even in a situation where the object being detected switches from the print medium to the belt in the middle of the conveying operation, the measurement of the moving distance can be performed without interruption by the same detection method using the same optical sensor unit. | 08-08-2013 |
20140132657 | INK-JET RECORDING DEVICE AND INK-JET RECORDING CONTROL METHOD - An ink-jet recording device is capable of correcting a recording position due to a leaning of a printing head and correcting of driving timing between multiple printing heads. Each nozzle row of a printing head is classified into multiple nozzle groups, and the driving timing of the nozzle groups other than the nozzle group serving as a reference of correction of the multiple nozzle groups is adjustable to correct for any leaning of the printing head. Moreover, in the event of performing the driving timing between printing heads, the driving timing of a non-reference printing head is adjustable relative to a reference printing head employed for leaning correction of multiple printing heads. | 05-15-2014 |
Patent application number | Description | Published |
20090126664 | VALVE TIMING ADJUSTING DEVICE - A valve timing adjusting device includes a housing, a first vane rotor, a second vane rotor, a biasing device, and a limiting device. The second vane rotor is coaxial with the first vane rotor. The biasing device has a first end engaged with the first vane rotor and a second end engaged with the second vane rotor. The biasing device biases one of the first and second vane rotors in the advance direction, and biases the other one in the retard direction. The limiting device allows the first vane rotor to rotate relative to the second vane rotor when pressure of working fluid is lower than a preset level, and limits the first vane rotor from rotating relatively when the pressure is not lower than the preset level. | 05-21-2009 |
20090173298 | VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a first rotor, a second rotor, and a bias mechanism. The bias mechanism is provided to one of the first and second rotors. The bias mechanism includes a resilient member and a projection portion that is rotatable together with the one of the first and second rotors. The projection portion is rotatable relative to the other one of the rotors and contacts a contact part of the other one. Restoring force of the resilient member is applied to the other one of the first and second rotors through the projection portion. The contact part includes an inclination portion that is configured to increase and decrease restoring force of the resilient member. | 07-09-2009 |
20090199798 | VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a driving-side rotor, a driven-side rotor, and a bias mechanism. The bias mechanism includes a projection portion that is rotatable synchronously with the one of the driving-side and driven-side rotors and that contacts a contact part of the other one of the driving-side and driven-side rotors. The contact part includes a receiver part that is configured to increase the restoring force of the resilient member when the other one of the driving-side and driven-side rotors is rotated relative to the one of the driving-side and driven-side rotors in the advance direction or in the retard direction. | 08-13-2009 |
20110185994 | VALVE TIMING ADJUSTER - A valve timing adjuster adjusts timing of opening and closing an intake valve or an exhaust valve by changing a phase between a drive shaft and a driven shaft. The valve timing adjuster includes a housing, a vane rotor, an urging member, a regulating member, and a control unit. The control unit controls rotation of an electric motor that rotates the drive shaft. When an internal combustion engine stops in a state, where the regulating member is positioned out of a bore, the control unit restarts the engine by controlling the electric motor in the following manner. Firstly, the motor is controlled to rotate at a first rotational speed, which is a relatively high speed and subsequently, the motor is quickly changed to rotate at a second rotational speed, which is a relatively low speed. | 08-04-2011 |
20120180740 | VALVE TIMING CONTROL DEVICE - A valve timing control device includes a first housing, a vane rotor, a second housing, a sealing plate, a regulating portion and a biasing portion. The sealing plate is interposed between the first housing and the second housing. The biasing portion biases the regulating portion toward the sealing plate. The sealing plate has a recess recessed from a base part toward the second housing at a predetermined position corresponding to the regulating portion in a relative rotation of the vane rotor. The regulating portion regulates the relative rotation of the vane rotor relative to the first housing and the second housing by being fitted with the recess of the sealing plate. | 07-19-2012 |
20130192551 | VALVE TIMING CONTROLLER AND ASSEMBLING METHOD OF THE SAME - A valve timing controller includes a reed valve interposed between an end surface of a vane rotor and an end surface of a driven shaft. The reed valve has a fixed part, a first reed part and a second reed part. Each of the first reed part and the second reed part has each lower limit pressure for allowing working oil to flow from a first supply passage to a second supply passage. The lower limit pressure of the first reed part is different from the lower limit pressure of the second reed part. | 08-01-2013 |
20130220247 | FLUID-PRESSURE-OPERATED VALVE TIMING CONTROLLER - A fluid-pressure-operated valve timing controller has a control valve that is disposed in a vane rotor and a camshaft. The control valve has a sleeve and a spool moving in an axial direction in the sleeve. The sleeve includes: a valve part held by the vane rotor; a screw part coaxially secured to the camshaft in a state where an axial tension is generated; and a connector part that connects the valve part and the screw part with each other in the axial direction. A strength or rigidity of the connector part relative to the axial tension is lower than that of the valve part. | 08-29-2013 |
20140090611 | VALVE TIMING CONTROLLER - A valve timing controller includes a rotation transmit component; a housing including an outer shape part fixed to the rotation transmit component and a plurality of partition parts extending from the outer shape part inward in a radial direction; and a vane rotor including a boss part and a plurality of vane parts radially extending from the boss part. The vane rotor is rotated relative to the housing on an advance side or a retard side according to a pressure of operation oil in an advance chamber and a retard chamber. The outer shape part of the housing has a dome shape. | 04-03-2014 |
20140090612 | VALVE TIMING CONTROL APPARATUS - A resin member may include a first side wall, which is placed between a first housing and a laminated body, and a second side wall, which is placed between a second housing and the laminated body. A vane rotor may include a pressing oil passage that is configured to guide hydraulic oil to a first seal member and a second seal member to exert a pressing force, which radially outwardly and axially urge the first seal member and the second seal member. | 04-03-2014 |
20140090613 | VALVE TIMING CONTROLER - A valve timing controller includes a housing, a vane rotor, and a stopper pin. The stopper pin regulates a relative rotation position of the vane rotor relative to the housing. A boss part of the vane rotor has a plurality of metal plates layered with each other in an axial direction. At least one metal plate of the plurality of metal plates has a hole in which the stopper pin is inserted, and a nail projected from an inner wall of the hole toward the stopper pin so as to hold the stopper pin. | 04-03-2014 |
20140144399 | VALVE TIMING ADJUSTING SYSTEM - A main angle-limiting mechanism mechanically limits a relative movement between a vane rotor and a housing within a main angular range. When a rotational phase difference between the vane rotor and the housing becomes out of the main angular range, for example, due to a breakage of the main angle-limiting mechanism, an electronic control unit sets a target value for the rotational phase difference. The target value is set at such a value within a restricted angular range, which is smaller than the main angular range. | 05-29-2014 |
20140150741 | VALVE TIMING CONTROL APPARATUS - In a valve timing control apparatus, a supply oil passage, which supplies hydraulic oil to advancing chambers, is formed separately from a discharge oil passage, which discharges the hydraulic oil from the advancing chambers. A spool is configured to reciprocate in a sleeve to enable and disable communication between each corresponding two of an intake oil passage, the supply oil passage, the discharge passage, and a supply and discharge passage. An isolating member is fixed to one end portion of the spool and isolates an air chamber, which is formed between the one end portion of the spool and a bottom portion of the sleeve, from each of the oil passages. | 06-05-2014 |
20140345550 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a housing rotor, a vane rotor, a control valve, and a lock mechanism which locks a rotation phase at a stop time and a start time of an engine. The control valve has an atmospheric port communicating with atmosphere air; a discharge port through which hydraulic fluid is discharged from a discharge chamber communicating with the discharge port when the engine is stopped; and a check valve which intercepts the atmospheric port and the discharge port from each other by receiving a negative pressure from the discharge chamber through the discharge port when the engine is started. | 11-27-2014 |
20140360449 | VALVE TIMING CONTROL DEVICE - A sealing member is supported by a holding surface of a vane rotor and slides on a sealing surface formed by an inner surface of a housing rotor, so as to seal an advancing chamber and a retarding chamber from each other. The sealing member has a pressure-receiving surface and a diffuser surface. The pressure-receiving surface receives pressure of working fluid from a working chamber in a direction to the sealing surface. The diffuser surface forms a sealing gap between the diffuser surface and the sealing surface, so that the sealing surface becomes larger as the sealing surface is more separated from the working chamber in a circumferential direction. The sealing member has a deformable portion forming the pressure-receiving surface and the diffuser surface. The deformable portion is elastically deformed, so that the diffuser surface is more strongly pushed to the sealing surface, when the pressure of the working fluid is increased. | 12-11-2014 |
20140373796 | VALVE TIMING CONTROL APPARATUS - A resin member may include a first side wall, which is placed between a first housing and a laminated body, and a second side wall, which is placed between a second housing and the laminated body. A vane rotor may include a pressing oil passage that is configured to guide hydraulic oil to a first seal member and a second seal member to exert a pressing force, which radially outwardly and axially urge the first seal member and the second seal member. | 12-25-2014 |
20150144084 | VALVE TIMING ADJUSTING APPARATUS - A vane rotor includes a laminated portion and seal portions. The laminated portion includes a plurality of metal plates, which are stacked in an axial direction. The seal portions are placed on two axially opposite sides of each of an advancing port, a retarding port, and a supply port. Each seal portion is configured into an annular form to extend along an outer peripheral surface of a sleeve in a circumferential direction and is engaged with the laminated portion to limit deformation of the seal portion toward a radially outer side. The seal portion is made of a material that has a thermal expansion coefficient, which is larger than a thermal expansion coefficient of a material of each metal plate. | 05-28-2015 |
Patent application number | Description | Published |
20120086957 | RECORDING APPARATUS - A recording apparatus includes a direct sensor arranged so as to face a second surface of a moving sheet on the back side of a first surface thereof and configured to perform measurement on the second surface at a measurement position to thereby detect at least one of information on sheet inclination at the measurement position and positional information on a sheet position in the direction of the distance between a recording head and the sheet at the measurement position. A control unit controls the operation of the recording apparatus based on the detection by the direct sensor. | 04-12-2012 |
20130088537 | PRINTING APPARATUS AND PROCESSING METHOD THEREOF - A printing apparatus comprising, a printhead including an element array in which a plurality of printing elements are arrayed, scanning unit configured to reciprocally scan the printhead, driving unit configured to time-divisionally drive the printing elements, conveyance unit configured to convey a printing medium, and setting unit configured to set a driving order, wherein the conveyance unit performs a first conveyance operation of conveying the printing medium by a conveyance amount which is an integer multiple of a width of the group of the time-divisional driving, and a second conveyance operation of conveying the printing medium by a conveyance amount which is not an integer multiple of the width of the group, and the setting unit sets the driving order in the time-divisional driving for each scan based on the conveyance amount by the conveyance unit. | 04-11-2013 |
20140104335 | PRINTING APPARATUS AND PRINTING METHOD - A printing apparatus including a print head including nozzle groups each having nozzles, each of the nozzle groups applying ink having a plurality of volumes from the nozzles to form dots including dots differing in size, including: an arrangement determination unit to determine an arrangement of dots to be formed by each of the nozzle groups; a size determination unit to determine sizes of ink ejected to print the dots determined by the arrangement determination unit, according to respective ejection characteristics of the nozzle groups, such that a print characteristic of an image based on the dot arrangement determined by the arrangement determination unit is within a predetermined range; and an ejection control unit to control the print head to eject ink having the plurality of sizes determined by the size determination unit in positions of a print medium based on the arrangement determined by the arrangement determination unit. | 04-17-2014 |
20150015640 | PRINTING APPARATUS AND PROCESSING METHOD THEREOF - A printing apparatus comprising, a printhead including an element array in which a plurality of printing elements are arrayed, scanning unit configured to reciprocally scan the printhead, driving unit configured to time-divisionally drive the printing elements, conveyance unit configured to convey a printing medium, and setting unit configured to set a driving order, wherein the conveyance unit performs a first conveyance operation of conveying the printing medium by a conveyance amount which is an integer multiple of a width of the group of the time-divisional driving, and a second conveyance operation of conveying the printing medium by a conveyance amount which is not an integer multiple of the width of the group, and the setting unit sets the driving order in the time-divisional driving for each scan based on the conveyance amount by the conveyance unit. | 01-15-2015 |