Patent application number | Description | Published |
20080252686 | INKJET PRINTING APPARATUS AND INKJET PRINTING METHOD - This invention reduces an unprinted stripe occurred by edge deviation of a printhead. An inkjet printing apparatus according to this invention can execute a first printing mode in which an image is printed by scanning the printhead in a first region on the printing medium N times and scanning the printhead in a second region adjacent to the first region (N+1) times, and a second mode in which an image is printed by scanning the printhead in the first region M times and scanning the printhead in the second region (M+1) times. The width, in the conveyance direction of the printing medium, of the second region printed in the second printing mode is narrower than the width, in the conveyance direction of the printing medium, of the second region printed in the first printing mode. | 10-16-2008 |
20080278530 | PRINTING APPARATUS AND METHOD FOR ESTIMATING AMOUNT OF INK - The present invention provides a printing apparatus which is capable of estimate an amount of remaining ink with high accuracy by using ejection of ink from a printing head while restraining a consumption of ink during the estimation of the remaining ink amount, and also provides a method for estimating an amount of ink. An amount of ink ejected per unit time during the ink ejection for estimation of the remaining ink amount is set to be larger than an amount of ink ejected per unit time during printing. | 11-13-2008 |
20080284823 | INKJET PRINTING APPARATUS - To achieve high-quality printing by controlling an ink-travelling direction by an electrostatic force so that the ink can be accurately applied on a printing medium, the ink is landed on a desired position of the printing medium effectively without disturbing the ink ejection, independent of a difference in the thickness of the printing medium. An electric field between a printing head and the printing medium is generated by applying a voltage to a platen of conductive material positioned immediately below the printing medium. At this point, the voltage applied to the platen is adjusted so that the electric field of a preferable intensity can be generated on a face of the printing head where ejection openings are formed irrespective of the thickness of the printing medium. | 11-20-2008 |
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 |
20090015638 | INKJET PRINTING APPARATUS AND PRINTING METHOD - To achieve high-quality printing by controlling an ink-traveling direction by an electrostatic force so that the ink can be accurately applied on a printing medium, the ink ejected to areas outside edges of the printing medium is prevented from being attracted to the end portions in margin-less printing. This configuration includes: a platen, made of a conductive material, positioned immediately below the printing medium; an absorber positioned at a side of the edge; and a mesh conductive member disposed on the absorber. A first voltage is applied to the platen, causing polarization in the printing medium, and a second voltage higher than the first voltage is applied to the conductive member. Thereby, ink ejected outside the edges in the margin-less printing, travels straight-forwardly toward the conductive member without being attracted to the end portions, and is absorbed into the absorber via the conductive member. | 01-15-2009 |
20090115810 | RECORDING APPARATUS AND RECOVERY CONTROL METHOD - A control method at the time of preliminary ejection of ink is changed between a recording area in which a nozzle used for recording is not switched every recording scanning and a recording area in which the nozzle for recording is switched every recording scanning, whereby the preliminary ejection is performed at an appropriate frequency in any recording area. | 05-07-2009 |
20090141059 | PRINTHEAD, PRINTING APPARATUS, AND PRINTHEAD DRIVING METHOD - A printhead includes a driving unit configured to drive a plurality of heaters, a register configured to input data of a plurality of bits corresponding to the number of heaters, a latch configured holding the data transferred from the register; a generation unit configured to generate a control signal of the driving unit for each heater based on a value of the data and a change in a level of an enable signal including a plurality of pulse signals; and an output unit outputting the control signal generated by the generation unit to the driving unit in synchronism with the pulse signals. | 06-04-2009 |
20090309907 | INKJET PRINTING APPARATUS AND INKJET PRINTING METHOD - This invention reduces an unprinted stripe occurred by edge deviation of a printhead. An inkjet printing apparatus according to this invention can execute a first printing mode in which an image is printed by scanning the printhead in a first region on the printing medium N times and scanning the printhead in a second region adjacent to the first region (N+1) times, and a second mode in which an image is printed by scanning the printhead in the first region M times and scanning the printhead in the second region (M+1) times. The width, in the conveyance direction of the printing medium, of the second region printed in the second printing mode is narrower than the width, in the conveyance direction of the printing medium, of the second region printed in the first printing mode. | 12-17-2009 |
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 |
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 |
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 |