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1. 发明公开

EP1447221A4 LIQUID JET HEAD 有权
标题翻译：喷液头
公开(公告)号：EP1447221A4
公开(公告)日：2005-06-15
申请号：EP02790699
申请日：2002-11-22
申请人： CANON KK
发明人： SASAKI TOSHIAKI , MURAI KEIICHI , TAMURA YASUYUKI , SUGAMA SADAYUKI , ASAI AKIRA , KAWAI TSUTOMU , TACHIHARA MASAYOSHI
IPC分类号： A61M15/00 , A61M15/02 , B05B1/24 , B41J2/14
CPC分类号： B41J2/1404 , A61M15/0065 , A61M15/02 , A61M15/025 , B41J2/14016 , B41J2/1412 , B41J2/1433 , B41J2002/14387
摘要： A liquid ejection head includes a liquid path; an ejection outlet forming member which constitutes a part of a wall of the liquid and which forms an ejection outlet for ejecting a droplet of liquid; a heat generating element, provided at a position opposing to the ejection outlet of the wall of the liquid flow path, for generating a bubble in the liquid by application of heat to the liquid; a restrictor portion, provided at a recessed portion of the ejection outlet, wherein the recessed portion is recessed from a plane in which the ejection outlet is formed, wherein the liquid forms a meniscus and is retained in the ejection outlet such that the restrictor portion is within the liquid, wherein an area So of an opening of the restrictor portion and a surface Sh of the heat generating element satisfy So

2. 发明专利

DE69833050D1 未知
公开(公告)号：DE69833050D1
公开(公告)日：2006-02-02
申请号：DE69833050
申请日：1998-09-03
申请人： CANON KK
发明人： TACHIHARA MASAYOSHI , MIZUTANI MICHINARI
IPC分类号： B41J2/14 , B41J2/15
摘要： In order to enable high speed printing with maintaining reliability of ink ejection, auxiliary holes (13) are provided in an upper wall (15) forming a liquid passage. An opening area of the auxiliary holes is set to be greater than or equal to three times of an opening area of an ejection opening (12), and a minimum distance (L4) between the auxiliary holes (13) and the ejection opening (12) is set to be greater than or equal to three times of a height (H1) of the liquid passage (14).

3. 发明专利

CA2256928C LIQUID EJECTION METHOD 未知
公开(公告)号：CA2256928C
公开(公告)日：2004-10-26
申请号：CA2256928
申请日：1998-12-23
申请人： CANON KK
发明人： KANEKO MINEO , TACHIHARA MASAYOSHI
IPC分类号： B41J2/05 , B41J2/14
摘要： A liquid ejection method includes a step of preparing a liquid ejection head including an electrothermal transducer element for generating thermal energy contributable to ejection of liquid, an ejection outlet for ejecting liquid, the ejection outlet being provided at a position opposed to the electrothermal transducer element, a liquid flow path in fluid communication with the ejection outlet to supply the liquid to the ejection outlet and having the electrothermal transducer element on its bottom side; a step of applying the thermal energy to the liquid to cause state change to the liquid to create a bubble, wherein the liquid is ejected through the ejection outlet by a pressure of the bubble; wherein the bubble is first in communication with the ambience in a process of reduction of the volume of the bubble after the bubble reaches a maximum volume.

4. 发明专利

AU765958B2 Liquid ejecting method and liquid ejecting head 未知
公开(公告)号：AU765958B2
公开(公告)日：2003-10-02
申请号：AU3506901
申请日：2001-04-09
申请人： CANON KK
发明人： TACHIHARA MASAYOSHI , TAMURA YASUYUKI , MURAKAMI SHUICHI
IPC分类号： B41J2/14

5. 发明专利

DE69331943D1 未知
公开(公告)号：DE69331943D1
公开(公告)日：2002-06-27
申请号：DE69331943
申请日：1993-12-21
申请人： CANON KK
发明人： ASAI AKIRA , TACHIHARA MASAYOSHI
IPC分类号： G06F17/21 , G06K15/02 , G06T11/20
摘要： In the invention, a plane region to which characters are output is divided into lattice-like elements (orthogonal lattice, triangular lattice, hexagonal lattice, etc.). In each element, an area ratio of the area to be output to the element is previously stored. The portion in the element in which the area ratio is equal to a first predetermined value (area ratio = 0) is not output. The portion in the element in which the area ratio is equal to a second predetermined value (area ratio = 1) larger than the first predetermined value is output. Further, the portion in the element in which the area ratio is larger than the first predetermined value and is smaller than the second predetermined value is regarded as a distribution of the continuous area ratio on the basis of the values of the area ratios of such an element and the elements therearound. The portion in which the area ratio is equal to or larger than a third predetermined value is output.

6. 发明专利

AU2320602A Ink jet head 未知
公开(公告)号：AU2320602A
公开(公告)日：2002-05-02
申请号：AU2320602
申请日：2002-03-11
申请人： CANON KK
发明人： SATO TAMAKI , INOUE TAKASHI , MIZUTANI MICHINARI , MURAKAMI SHUICHI , WATANABE YASUTOMO , TACHIHARA MASAYOSHI , KANEKO MINEO , TAMURA YASUYUKI
IPC分类号： B41J2/14

7. 发明专利

DE69520461D1 未知
公开(公告)号：DE69520461D1
公开(公告)日：2001-05-03
申请号：DE69520461
申请日：1995-04-25
申请人： CANON KK
发明人： MORITA OSAMU , TACHIHARA MASAYOSHI
IPC分类号： B41J2/18 , B41J2/05 , B41J2/165 , B41J2/175 , B41J2/185
摘要： A liquid ejection printing apparatus can certainly and quickly perform preliminary ejection. The liquid ejection printing apparatus ejects droplet of a liquid state printing material through a printing head (10) to a medium to be printed for depositing the printing material to perform printing. The liquid ejection printing apparatus performs preliminary ejection upon the onset of power supply (13) and/or prior to initiation of printing with varying a drive frequency of the printing head during the preliminary ejection.

8. 发明专利

ES2131521T3 未知
公开(公告)号：ES2131521T3
公开(公告)日：1999-08-01
申请号：ES92305132
申请日：1992-06-04
申请人： CANON KK
发明人： TANAKA HIDEKI , TAMURA YASUYUKI , TAKAHASHI HIROTO , TAKAGI SHINJI , SHIOYA MAKOTO , TACHIHARA MASAYOSHI
IPC分类号： B41J2/21 , B41J19/16 , B41J2/205
摘要： Each of pixels (No. 1 to N) of recorded image is formed by a plurality of dots composed with ink droplets ejected from a plurality of different orifices (No. 1 to M) at individual different main-scannings (No. 1, 2, 3 and so on). With this recording process, the variation of ink ejection characteristics between a plurality of orifices in a recording head can be reduced in forming pixels.

9. 发明专利

DE69229065D1 未知
公开(公告)号：DE69229065D1
公开(公告)日：1999-06-10
申请号：DE69229065
申请日：1992-01-16
申请人： CANON KK
发明人： HIRASAWA SHIN ICHI , TAMURA YASUYUKI , TAKAHASHI HIROTO , SHIOYA MAKOTO , TACHIHARA MASAYOSHI , MAEDA HIROYUKI , INADA GENJI
IPC分类号： B41J2/14 , B41J2/05
摘要： A fluid ejection head comprises a heater (5) in a face within a fluid path (1). A bubble is generated by suppling electric power to the heater (5), and ink is ejected almost in a direction parallel to a face of the heater (5). The fluid path (1) further comprises a first part having a constant-section area being adjacent to an ejection orifice (2) a second part which exists behind the first part containing the heater, the cross-section area of the second part increasing by twice as large as the cross-section area of the ejection orifice (2), a length (A) between an end of the first part and a top end of the heater (5) is greater than or equal to a half of a height Ph of the ejection orifice.

10. 发明专利

DE69116176D1 未知
公开(公告)号：DE69116176D1
公开(公告)日：1996-02-22
申请号：DE69116176
申请日：1991-01-16
申请人： CANON KK
发明人： HIRASAWA SHINICHI , TACHIHARA MASAYOSHI
IPC分类号： B41J2/14

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