Liquid ejection method, head and apparatus
    3.
    发明公开
    Liquid ejection method, head and apparatus 失效
    用于喷射液体和液体喷射头的方法和装置

    公开(公告)号:EP0811490A3

    公开(公告)日:1998-11-25

    申请号:EP97303927

    申请日:1997-06-06

    Applicant: CANON KK

    Abstract: A liquid ejection method includes preparing a head comprising an ejection outlet (18) for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member (31) disposed faced to the bubble generation region (11) and displaceable between a first position and a second position further from the bubble generation region (11) than the first position; displacing the movable member (31) from the first position to the second position by pressure produced by the generation of the bubble in the bubble generating portion (11) to permit expansion of the bubble more in a downstream side closer to the ejection outlet (18) than in an upstream side; supplying, to a heat generating element (2) for applying thermal energy to the bubble generating region (11), a driving pulse divided into a first pulse and an adjacent second pulse with interval time therebetween; pre-heating the liquid by the first pulse to an extent not enough to eject the liquid through the ejection outlet; generating a bubble by heating the liquid by the second pulse to eject the liquid through the ejection outlet (18); controlling a degree of pre-heating of the liquid by changing at least one of a pulse width of the first pulse or the interval time.

    Abstract translation: 一种液体喷射方法,包括:制备一个头在喷射出口,其包括用于喷射液体,在液体中产生气泡的气泡发生区域,一可动件,面向所述气泡发生区域,并在第一位置和另外的第二位置之间移动 从比第一位置的气泡发生区域; 通过在气泡发生部分的气泡的发生而产生的,以允许气泡的扩展更在下游侧比在上游侧更靠近喷射出口的压力可动件从第一位置到第二位置移动; 供给,在热产生元件,用于将热能施加到气泡产生区,一个驱动脉冲分成第一脉冲和与间隔时间之间存在相邻的第二脉冲; 由第一脉冲在幅度不足以喷射通过喷射出口的液体预加热的液体; 通过由第二脉冲加热液体以喷射通过所述喷射出口的液体中产生气泡; 控制通过改变第一脉冲或间隔时间的脉冲宽度中的至少一个一定程度的液体的预加热的。

    4.
    发明专利
    未知

    公开(公告)号:AT426999T

    公开(公告)日:2009-04-15

    申请号:AT01310025

    申请日:2001-11-29

    Applicant: CANON KK

    Abstract: Image processing apparatus and image processing method for formation of high quality image by high-speed error diffusion processing by execution of more complicated threshold condition processing in a simple manner. When error diffusion processing is performed on multivalued image data having plural density components and the result of processing is outputted, upon execution of error diffusion processing on a first density component among the plural density components, a threshold value used in the error diffusion processing is determined based on a density value of a second density component, then the error diffusion processing is performed on the first density component based on the determined threshold value, and the result of execution of the error diffusion processing is outputted. Further, upon execution of the error diffusion processing on the second density component among the plural density components, a threshold value used in the error diffusion processing is determined based on a density value of the first density component, then the error diffusion processing is performed on the second density component based on the determined threshold value, and the result of the error diffusion processing is outputted.

    6.
    发明专利
    未知

    公开(公告)号:DE60134593D1

    公开(公告)日:2008-08-14

    申请号:DE60134593

    申请日:2001-02-16

    Applicant: CANON KK

    Abstract: The present inventions allow the detection of ink in the printing head by significantly simplified their configurations and on which various printing systems can be widely applied. There are a heater (101) for supplying an energy to ejecting ink, a driver (102) for driving heater (101), and a detection electrode (118) capable of detecting a voltage variation between the heater (101) and the driver (102) to be occurred depending on the driving of the heater (101). Furthermore, an insulating film (410) that covers the surface of the detection electrode (118) prevents a chemical or physical change from the detection electrode (118). Furthermore, a reference element group or a reference unit that produces a signal as a reference of the detection signal avoids the influence of noise. Furthermore, an energy-generating element (101) and another signal source (101) improve the accuracy of ink-detection. A drive pulse which is insufficient to ejecting ink may be supplied to the heater (101) to improve the accuracy of ink-detection.

    7.
    发明专利
    未知

    公开(公告)号:DE60038527D1

    公开(公告)日:2008-05-21

    申请号:DE60038527

    申请日:2000-11-10

    Applicant: CANON KK

    Abstract: This invention relates to an ink set which can form a colored area on a recording medium with a broad color reproduction range, excellent uniformity of the colors, with effective prevention of bleeding at the boundary between adjacent different color areas on a recording medium, and high rub-off resistance of the colored area. The ink set has separately an aqueous anionic or cationic ink containing a coloring material, and a liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink. The ink and the liquid composition are adjusted to give, when mixed at a mixing weight ration of about 1:1, a pH of the liquid mixture to cause aggregation of at least the coloring material.

    8.
    发明专利
    未知

    公开(公告)号:DE60217010T2

    公开(公告)日:2007-08-09

    申请号:DE60217010

    申请日:2002-05-08

    Applicant: CANON KK

    Abstract: The present invention relates to a liquid composition for use in forming a colored portion by imparting it together with an ink containing a colorant to a recording medium. The liquid composition includes at least a solvent and fine particles reactive with the colorant and, in which the fine particles in the liquid composition have an average particle diameter in a range of 30 to 200 nm, and a 10% cumulative value of scatting intensity of 10 nm or more and 90% cumulative value of scattering intensity of 300 nm or less, when measured by a dynamic light scattering method.

    9.
    发明专利
    未知

    公开(公告)号:DE69834009T2

    公开(公告)日:2006-08-31

    申请号:DE69834009

    申请日:1998-06-25

    Applicant: CANON KK

    Abstract: On the basis of an image data for one line, ejection data is established distributed ejection data in a period of two pixels for each scan for performing printing by scanning twice with different ejection openings. Then, a processing liquid data is generated with a processing liquid mask of a period of three pixels which is prime to the period of two pixels, with respect to the ejection data. By this, with respect to results of a first scan and a second scan, pixels, on which an ink and a processing liquid are overlaid can be distributed uniformly. As a result, it is never differentiate order of application of the processing liquid by performing printing in the order of second scan and the first scan in other scanning region from correspondence of the ejection openings.

    10.
    发明专利
    未知

    公开(公告)号:DE69833730D1

    公开(公告)日:2006-05-04

    申请号:DE69833730

    申请日:1998-05-05

    Applicant: CANON KK

    Inventor: KATO MASAO

    Abstract: The invention intends to improve the efficiency of recording, e.g., to shorten a recording time, while preventing an excessive temperature rise of an ink jet head. To that end, in a control method for an ink jet recording apparatus with which an amount of heat generated by the head is restricted when a condition of a head temperature being not lower than a predetermined threshold is found by the use of means for detecting the head temperature and an environment temperature around the head, an extent of restricting the amount of heat generated by the head is changed depending on the environment temperature or a difference between the head temperature and the environment temperature.

Patent Agency Ranking