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21. 发明专利

DE69909670T2 未知
公开(公告)号：DE69909670T2
公开(公告)日：2004-05-27
申请号：DE69909670
申请日：1999-04-06
申请人： CANON KK
发明人： OTSUKA NAOJI , TAKAHASHI KIICHIRO , NISHIKORI HITOSHI , IWASAKI OSAMU , TESHIGAWARA MINORU , CHIKUMA TOSHIYUKI
IPC分类号： B41J2/01 , B41J2/05 , B41J2/125 , B41J2/21 , B41J19/18 , B41J29/46 , G06K15/10 , B41J2/505

22. 发明专利

DE69333481D1 未知
公开(公告)号：DE69333481D1
公开(公告)日：2004-05-13
申请号：DE69333481
申请日：1993-10-08
申请人： CANON KK
发明人： OTSUKA NAOJI , ARAI ATSUSHI , YANO KENTARO , TAKAHASHI KIICHIRO , NISHIKORI HITOSHI , IWASAKI OSAMU
IPC分类号： B41J2/055 , B41J2/14 , B41J2/19
摘要： An ink jet print head includes ink ejection outlets (5,6,7,8) for ejecting ink, passages communicating with the ejection outlets; a common chamber (9) for supplying the ink to the passages; ejection energy generating elements (3) for producing energy for ejecting the ink; an ink supply passage for supplying the ink to the common chamber; a buffering chamber (13) disposed at a position through which a pressure wave resulting from driving of the ejection energy generating elements (3) propagate, the buffering chamber containing a gas for attenuating the pressure wave, wherein a part of a wall constituting the buffering chamber (13) has a gas transmitting property.

23. 发明专利

DE69233218T2 未知
公开(公告)号：DE69233218T2
公开(公告)日：2004-05-06
申请号：DE69233218
申请日：1992-07-30
申请人： CANON KK
发明人： HIRABAYASHI HIROMITSU , OTSUKA NAOJI , YANO KENTARO , SUGIMOTO HITOSHI , MATSUBARA MIYUKI , TAKAHASHI KIICHIRO , IWASAKI OSAMU
IPC分类号： B41J2/05 , B41J2/175 , B41J2/195
摘要： An ink jet recording apparatus includes a recording head for ejecting an ink from an ejection unit to cause a change in temperature in a recording period, a temperature keeping unit for maintaining a temperature of the recording head at a predetermined keeping temperature higher than an upper limit of a surrounding temperature range in which recording is possible, a temperature prediction unit for predicting an ink temperature in the ejection unit in the recording period prior to recording, and an ejection stabilization unit for stabilizing ink ejection from the ejection unit according to the ink temperature in the ejection unit predicted by the temperature prediction unit.

24. 发明专利

AT263682T 未知
公开(公告)号：AT263682T
公开(公告)日：2004-04-15
申请号：AT99104872
申请日：1993-10-08
申请人： CANON KK
发明人： OTSUKA NAOJI , ARAI ATSUSHI , YANO KENTARO , TAKAHASHI KIICHIRO , NISHIKORI HITOSHI , IWASAKI OSAMU
IPC分类号： B41J2/055 , B41J2/14 , B41J2/19
摘要： An ink jet print head includes ink ejection outlets (5,6,7,8) for ejecting ink, passages communicating with the ejection outlets; a common chamber (9) for supplying the ink to the passages; ejection energy generating elements (3) for producing energy for ejecting the ink; an ink supply passage for supplying the ink to the common chamber; a buffering chamber (13) disposed at a position through which a pressure wave resulting from driving of the ejection energy generating elements (3) propagate, the buffering chamber containing a gas for attenuating the pressure wave, wherein a part of a wall constituting the buffering chamber (13) has a gas transmitting property.

25. 发明专利

DE69532311D1 未知
公开(公告)号：DE69532311D1
公开(公告)日：2004-01-29
申请号：DE69532311
申请日：1995-07-31
申请人： CANON KK
发明人： IWASAKI OSAMU , OTSUKA NAOJI , YANO KENTARO , TAKAHASHI KIICHIRO , KANEMATSU DAIGORO
IPC分类号： B41J2/175 , B41J2/05 , B41J2/205
摘要： An ink jet recording apparatus in which thermal energy is applied to ink in accordance with a driving signal applied to a heater to produce a bubble, by which ink is ejected onto a recording material includes a driver for applying a plurality of driving signals to the heater for one ejection of ink droplet, wherein the driving signals comprises a first driving signal not ejecting the ink and a second driving signal for ejecting the ink, the second driving signal is applied after a rest period after the first driving signal; a controller for changing an amount of ink ejected by changing a length of the rest period and changing the first driving signal; wherein the controller effects its changing operation in a first changing region in which the rest period is changed without changing the first driving signal and in a second changing region in which a length of the first drive signal is changed.

26. 发明专利

CA2296908C INK JET RECORDING APPARATUS HAVING TEMPERATURE CONTROL FUNCTION 未知
公开(公告)号：CA2296908C
公开(公告)日：2004-01-06
申请号：CA2296908
申请日：1992-07-29
申请人： CANON KK
发明人： TAKAHASHI KIICHIRO , YANO KENTARO , OTSUKA NAOJI , IWASAKI OSAMU
IPC分类号： B41J2/05 , B41J2/17 , G01K1/00 , G01K3/00
摘要： An ink jet recording apparatus includes a recording head for ejecting an ink from an ejection unit to cause a change in temperature in a recording period, a temperature keeping unit for maintaining a temperature of the recording head at a predetermined keeping temperature higher than an upper limit of a surrounding temperature range in which recording is possible, a temperature prediction unit for predicting an ink temperature in the ejection unit in the recording period prior to recording, and an ejection stabilization unit for stabilizing ink ejection from the ejection unit according to the ink temperature in the ejection unit predicted by the temperature prediction unit.

27. 发明专利

DE69909670D1 未知
公开(公告)号：DE69909670D1
公开(公告)日：2003-08-28
申请号：DE69909670
申请日：1999-04-06
申请人： CANON KK
发明人： OTSUKA NAOJI , TAKAHASHI KIICHIRO , NISHIKORI HITOSHI , IWASAKI OSAMU , TESHIGAWARA MINORU , CHIKUMA TOSHIYUKI
IPC分类号： B41J2/01 , B41J2/05 , B41J2/125 , B41J2/21 , B41J19/18 , B41J29/46 , G06K15/10 , B41J2/505

28. 发明专利

AU759094B2 Ink jet printing apparatus and method with suppressed bleeding of inks 未知
公开(公告)号：AU759094B2
公开(公告)日：2003-04-03
申请号：AU1542602
申请日：2002-02-05
申请人： CANON KK
发明人： NISHIKORI HITOSHI , OTSUKA NAOJI , SUGIMOTO HITOSHI , TAKAHASHI KIICHIRO , IWASAKI OSAMU , TESHIGAWARA MINORU , YAZAWA TAKESHI , CHIKUMA TOSHIYUKI
IPC分类号： B41J2/01 , B41J2/07 , B41J2/21 , B41J19/14 , B41J2/145
摘要： An ink jet printing apparatus comprising print means having a polarity of ejection outlet arrays each having a plurality of ejection outlets, arranged in a predetermined direction, for ejecting ink, scanning means for scanningly moving the print means relative to the print medium in a main scan direction which is different from the predetermined direction during a printing operation, and means for feeding the print medium relative to the print means in a direction which is different from the main scan direction, wherein an image is formed on the print medium while repeating scanning operation of the scanning means and feeding operation by the feeding means, includes information obtain means for obtaining image information corresponding to at least one of the ejection outlet arrays with respect to a predetermined area of image data to be printed; and selecting means for selecting such a portion in the at least one of ejection outlet arrays as is to effect printing for the image data in the predetermined area, on the basis of the information obtained by the information obtaining means upon image formations.

29. 发明专利

DE69714400T2 未知
公开(公告)号：DE69714400T2
公开(公告)日：2002-12-05
申请号：DE69714400
申请日：1997-10-31
申请人： CANON KK
发明人： KANEMATSU DAIGORO , OTSUKA NAOJI , YANO KENTARO , TAKAHASHI KIICHIRO , NISHIKORI HITOSHI , IWASAKI OSAMU , KANDA HIDEHIKO
IPC分类号： B41J2/01 , B41J2/05 , B41J2/14 , B41J2/145 , B41J2/205 , B41J2/21 , B41M5/00 , C09D11/00 , C09D11/30 , C09D11/40 , H04N1/40
摘要： In the case of printing in three-value level utilizing two kinds of inks mutually different densities for one color (higher and lower density inks), it is assumed that a reflection density of a region having a predetermined area (C, D) when solid print is performed only by the lower density ink, and when solid print is performed only by the higher density ink are expressed ODt and ODn, respectively. Since the granular appearance of the ink dots is expressed in terms of reflection density of one dot, the granular appearance of a lower density ink dot at a portion (A) of image formed only by the lower density ink dots and the granular appearance of a higher density ink dot at a portion (B) of image formed by the higher and lower density ink dots are expressed in terms of values of ODt and (ODn - ODt) divided by the number of pixels included the above region, respectively. Accordingly, by making the reflection density ODt to be approximately one half of the reflection density ODn, the granular appearance produced by the lower density ink dot at the highlighted portion and the granular appearance produced by the higher density ink dot at the portion where the higher density ink dots scattered in the lower density ink dots can be made substantially equal to each other. For this purpose, it is preferable that a dye concentration of the lower density ink is to be about one fourth of that of the higher density ink.

30. 发明专利

DE69714400D1 未知
公开(公告)号：DE69714400D1
公开(公告)日：2002-09-05
申请号：DE69714400
申请日：1997-10-31
申请人： CANON KK
发明人： KANEMATSU DAIGORO , OTSUKA NAOJI , YANO KENTARO , TAKAHASHI KIICHIRO , NISHIKORI HITOSHI , IWASAKI OSAMU , KANDA HIDEHIKO
IPC分类号： B41J2/01 , B41J2/05 , B41J2/14 , B41J2/145 , B41J2/205 , B41J2/21 , B41M5/00 , C09D11/00 , C09D11/30 , C09D11/40 , H04N1/40
摘要： In the case of printing in three-value level utilizing two kinds of inks mutually different densities for one color (higher and lower density inks), it is assumed that a reflection density of a region having a predetermined area (C, D) when solid print is performed only by the lower density ink, and when solid print is performed only by the higher density ink are expressed ODt and ODn, respectively. Since the granular appearance of the ink dots is expressed in terms of reflection density of one dot, the granular appearance of a lower density ink dot at a portion (A) of image formed only by the lower density ink dots and the granular appearance of a higher density ink dot at a portion (B) of image formed by the higher and lower density ink dots are expressed in terms of values of ODt and (ODn - ODt) divided by the number of pixels included the above region, respectively. Accordingly, by making the reflection density ODt to be approximately one half of the reflection density ODn, the granular appearance produced by the lower density ink dot at the highlighted portion and the granular appearance produced by the higher density ink dot at the portion where the higher density ink dots scattered in the lower density ink dots can be made substantially equal to each other. For this purpose, it is preferable that a dye concentration of the lower density ink is to be about one fourth of that of the higher density ink.

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