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Patent Agency Ranking
公开(公告)号：AU5838996A
公开(公告)日：1997-02-06
申请号：AU5838996
申请日：1996-07-08
Applicant: SONY CORP
Inventor： NARUSHIMA TOSHIO , KAKINUMA KOICHIRO , ARAYA MASAO , MIKAMI SHINICHIRO
Abstract: A method for controlling gradation in an ink jet printer is provided which includes the steps of (a) reading input picture data in first memory means (b) determining the position of a pixel under consideration from the input picture data read out from the first memory means and for calculating an error +531 =X-X', where X is input picture data of the pixel under consideration and X' is a level of plural stages to be actually printed, (c) distributing the error +531 to surrounding pixels around the pixel under consideration, (d) replacing the input picture data of the surrounding pixels, to which the error has been distributed, based on the distributed error, (e) performing the steps (a) to (d) for all input picture data by way of dithering, (f) storing the dithered pixel data resulting from the step (e) in second memory means, (g) generating, from the dithered pixel data read out from the second memory means, output picture data controlling the ink dot diameter of each pixel, (h) D/A converting the output picture data and (i) impressing an output voltage resulting from D/A conversion across an electrostriction oscillator of the printing head for variably controlling the diameter of liquid droplets of the liquid ink discharged from the printing head.
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公开(公告)号：DE69229822D1
公开(公告)日：1999-09-23
申请号：DE69229822
申请日：1992-10-16
Applicant: SONY CORP
Inventor： EGUCHI YASUHITO , ANDO MAKOTO , NARUSHIMA TOSHIO , TOMONO KAORU , SATO MASAYUKI , ARAYA MASAO
Abstract: The present invention is to provide an on-demand type ink-jet printer which is free from the risk such that the nozzle is stopped and which is also free from the maintenance. An ink-jet print head comprises a liquid chamber (2) into which a carrier liquid (7) is filled, ink-jet driving means (3), (4) disposed within the liquid chamber (2), a nozzle (14) communicated with the liquid chamber (2) and a mixing unit (14a) disposed in the vicinity of the nozzle (14) for mixing an ink (9) into the carrier liquid (7). The ink (9) is mixed into the carrier liquid (7) in the liquid chamber (2) by the mixing unit (14a), pressed by the ink-jet driving means (3), (4) and then ink-jetted from the nozzle (14). Since the carrier liquid (7) is constantly filled into the nozzle (14), the nozzle (14) can be prevented from being choked up.
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公开(公告)号：CA2181223A1
公开(公告)日：1997-02-01
申请号：CA2181223
申请日：1996-07-15
Applicant: SONY CORP
Inventor： NARUSHIMA TOSHIO , KAKINUMA KOICHIRO , ARAYA MASAO , MIKAMI SHINICHIRO
Abstract: A method for controlling gradation in an ink jet printer is provided which includes the steps of (a) reading input picture data in first memory means (b) determining the position of a pixel under consideration from the input picture data read out from the first memory means and for calculating an error .epsilon. = X -X', where X is input picture data of the pixel under consideration and X' is a level of plural stages to be actually printed, (c) distributing the error .epsilon. to surrounding pixels around the pixel under consideration, (d) replacing the input picture data of the surrounding pixels, to which the error has been distributed, based on the distributed error, (e) performing the steps (a) to (d) for all input picture data by way of dithering, (f) storing the dithered pixel data resulting from the step (e) in second memory means, (g) generating, from the dithered pixel data read out from the second memory means, output picture data controlling the ink dot diameter of each pixel, (h) D/A converting the output picture data and (i) impressing an output voltage resulting from D/A conversion across an electrostriction oscillator of the printing head for variably controlling the diameter of liquid droplets of the liquid ink discharged from the printing head.
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公开(公告)号：DE69229822T2
公开(公告)日：2000-02-17
申请号：DE69229822
申请日：1992-10-16
Applicant: SONY CORP
Inventor： EGUCHI YASUHITO , ANDO MAKOTO , NARUSHIMA TOSHIO , TOMONO KAORU , SATO MASAYUKI , ARAYA MASAO
Abstract: The present invention is to provide an on-demand type ink-jet printer which is free from the risk such that the nozzle is stopped and which is also free from the maintenance. An ink-jet print head comprises a liquid chamber (2) into which a carrier liquid (7) is filled, ink-jet driving means (3), (4) disposed within the liquid chamber (2), a nozzle (14) communicated with the liquid chamber (2) and a mixing unit (14a) disposed in the vicinity of the nozzle (14) for mixing an ink (9) into the carrier liquid (7). The ink (9) is mixed into the carrier liquid (7) in the liquid chamber (2) by the mixing unit (14a), pressed by the ink-jet driving means (3), (4) and then ink-jetted from the nozzle (14). Since the carrier liquid (7) is constantly filled into the nozzle (14), the nozzle (14) can be prevented from being choked up.
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公开(公告)号：AU701284B2
公开(公告)日：1999-01-21
申请号：AU5838996
申请日：1996-07-08
Applicant: SONY CORP
Inventor： NARUSHIMA TOSHIO , KAKINUMA KOICHIRO , ARAYA MASAO , MIKAMI SHINICHIRO
Abstract: A method for controlling gradation in an ink jet printer is provided which includes the steps of (a) reading input picture data in first memory means (b) determining the position of a pixel under consideration from the input picture data read out from the first memory means and for calculating an error +531 =X-X', where X is input picture data of the pixel under consideration and X' is a level of plural stages to be actually printed, (c) distributing the error +531 to surrounding pixels around the pixel under consideration, (d) replacing the input picture data of the surrounding pixels, to which the error has been distributed, based on the distributed error, (e) performing the steps (a) to (d) for all input picture data by way of dithering, (f) storing the dithered pixel data resulting from the step (e) in second memory means, (g) generating, from the dithered pixel data read out from the second memory means, output picture data controlling the ink dot diameter of each pixel, (h) D/A converting the output picture data and (i) impressing an output voltage resulting from D/A conversion across an electrostriction oscillator of the printing head for variably controlling the diameter of liquid droplets of the liquid ink discharged from the printing head.
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