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 |
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 |
20090002415 | RECORDING APPARATUS - A recording apparatus includes: a recording head having a recording element row in which multiple recording elements are disposed, with recording elements at dispersed positions in the recording element rows as blocks; a scanning unit configured to scan the recording head in a main scanning direction; a time-division driving unit configured to drive the recording elements in increments of blocks; a storing unit configured to store recording data; an obtaining unit configured to obtain information relating to the inclination of the recording element row relative to the main scanning direction; and a changing unit operable to change, in increments of individual recording elements, the storage position in the main scanning direction of recording data stored in the storing unit that is to be provided to recording elements of a group, which is configured of consecutive recording elements in each block in the recording element row, based on the obtained information. | 01-01-2009 |
20090002420 | PRINTING APPARATUS AND METHOD OF CONTROLLING THE SAME - An object of this invention is to properly prevent clogging of each nozzle in order to stably discharge ink without increasing a circuit scale even when the number of nozzles increases. For this purpose, the number of ink discharges from each printing element is stored in a memory. The number of ink discharges from each printing element that is measured from input printing data is subtracted from that stored in the memory, and the subtraction result is rewritten into the memory. The subtraction result is checked in a predetermined period, and if the number of ink discharges from each printing element is equal to or larger than a predetermined count, preliminary discharge to be performed periodically is suppressed. | 01-01-2009 |
20090002728 | PRINTING APPARATUS AND CONTROL METHOD THEREFOR - An object of this invention is to provide a printing apparatus capable of reducing slanting displacement for high-quality image. To achieve this object, slant information of a printing element array ( | 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 |
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 |
20120194587 | PRINTING APPARATUS AND DETERMINATION METHOD THEREOF - A printing apparatus, comprising a plurality of printing element substrates provided with printing elements that discharge ink using thermal energy, a plurality of temperature sensors, each of the plurality of temperature sensors is provided on each of the printing element substrates, and that measure a temperature of the printing element substrates, a selection unit configured to select any one of the plurality of temperature sensors, a control unit configured to perform control such that driving is performed for only the printing elements of the printing element substrate on which is provided the temperature sensor selected by the selection unit, and a determination unit configured to determine a presence/absence of an abnormality of the printing element substrates based on a measured temperature that has been measured by the temperature sensor selected by the selection unit. | 08-02-2012 |
20120229544 | RECORDING APPARATUS - A recording apparatus includes: a recording head having a recording element row in which multiple recording elements are disposed, with recording elements at dispersed positions in the recording element rows as blocks; a scanning unit configured to scan the recording head in a main scanning direction; a time-division driving unit configured to drive the recording elements in increments of blocks; a storing unit configured to store recording data; an obtaining unit configured to obtain information relating to the inclination of the recording element row relative to the main scanning direction; and a changing unit operable to change, in increments of individual recording elements, the storage position in the main scanning direction of recording data stored in the storing unit that is to be provided to recording elements of a group, which is configured of consecutive recording elements in each block in the recording element row, based on the obtained information. | 09-13-2012 |
20130328957 | INK JET PRINTING APPARATUS AND CONTROL METHOD THEREOF - The ink jet printing apparatus, wherein, to print images on a printing medium, a plurality of print heads, each of which includes an ejection port array provided by arranging multiple ink ejection ports in a widthwise direction of the printing medium, are arranged in a conveying direction of the printing medium, including: a unit for detecting a printing position displacement with respect to a printing position of a reference print head on the printing medium for each of remaining print heads excluding the reference print head which is one of the plurality of print heads; and a unit for adding non-image data corresponding to the printing position displacement to print data to be printed by the plurality of print heads, so as to align the printing positions of the plurality of print heads. | 12-12-2013 |
20140111815 | PRINTING APPARATUS AND METHOD FOR CORRECTING PRINT POSITION DISPLACEMENT - A printing apparatus which uses a plurality of print element arrays in each of which a plurality of print elements are arranged, and drives a predetermined number of print elements of each of blocks obtained by dividing each of the plurality of the print element arrays into pieces of the predetermined number of the print elements respectively in a time division driving manner, to perform printing on a print medium conveyed, including: a position displacement detecting unit configured to detect print position displacements; and a correction unit configured to perform correction in which pixels which are to be printed by print elements is shifted, the number of the print elements corresponding to an amount of the print position displacement, by a block in each of the plurality of the print element arrays. | 04-24-2014 |