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公开(公告)号：EP1447221A4
公开(公告)日：2005-06-15
申请号：EP02790699
申请日：2002-11-22
Applicant: CANON KK
Inventor： SASAKI TOSHIAKI , MURAI KEIICHI , TAMURA YASUYUKI , SUGAMA SADAYUKI , ASAI AKIRA , KAWAI TSUTOMU , TACHIHARA MASAYOSHI
CPC classification number: B41J2/1404 , A61M15/0065 , A61M15/02 , A61M15/025 , B41J2/14016 , B41J2/1412 , B41J2/1433 , B41J2002/14387
Abstract: 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
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公开(公告)号：DE69530826D1
公开(公告)日：2003-06-26
申请号：DE69530826
申请日：1995-11-30
Applicant: CANON KK
Inventor： OKUDA MASAHIRO , ASAI AKIRA , MASUTANI SHIGEKI
Abstract: An electron-emitting device having an electron-emitting portion (6,3) between a lower potential side electrode (4) and a higher potential side electrode (5) which are opposite to each other, the electron-emitting device including a field correction electrode (7) disposed adjacent to the lower potential side electrode or the higher potential side electrode and capable of independently supplying a potential.
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公开(公告)号：CA2209877C
公开(公告)日：2003-03-18
申请号：CA2209877
申请日：1997-07-04
Applicant: CANON KK
Inventor： ISHINAGA HIROYUKI , SUGIYAMA HIROYUKI , ASAI AKIRA , SUGAMA SADAYUKI , KASHINO TOSHIO , KUDO KIYOMITSU
Abstract: A liquid discharging method comprises the step of displacing the free end of the movable member following the creation of air bubble in the air bubble generating area. For this method, the fulcrum of the movable member is positioned on the side different from liquid discharging side with respect to the displacement area for the free end of the movable member to be displaceable, and at the same time, the free end thereof is arranged to face the effective bubbling area positioned on the downstream side of the central portion of the length of the effective bubbling area that forms the bubble generating area in the direction of the movable member from the fulcrum to the free end thereof, and a part of the effective bubbling area positioned to face the free end of the movable member on the downstream side of the effective bubbling area is arranged to face the displacement area directly. Thus, the initiation of the displacement of the free end of the movable member is effectuated quickly and reliably, and the pressure exerted by the air bubble creation is led to the discharge port side and the fulcrum side of the movable member sufficiently at the time of bubbling, and the development of air bubble that follows is directed to the discharge port side more reliably and efficiently.
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公开(公告)号：DE69331943D1
公开(公告)日：2002-06-27
申请号：DE69331943
申请日：1993-12-21
Applicant: CANON KK
Inventor： ASAI AKIRA , TACHIHARA MASAYOSHI
Abstract: 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.
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公开(公告)号：AU703968B2
公开(公告)日：1999-04-01
申请号：AU2054995
申请日：1995-06-07
Applicant: CANON KK
Inventor： SUZUKI NORITAKE , SUZUKI HIDETOSHI , ASAI AKIRA , YAMANO AKIHIKO
Abstract: An electron-beam generating device, in which a number of cold cathode elements are matrix-wired, as well as a method of driving the device, is applied to an image forming apparatus. Statistical calculations are performed in advance with regard to a required electron-beam output, and loss produced in the matrix wiring is analyzed. Drive signals are corrected by deciding optimum correction values based upon the analytical results. As a result, when rows of the matrix are driven successively row by row, the intensity of the outputted electron beams can made accurate for any driving pattern.
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Patent Agency Ranking
公开(公告)号：AU2861097A
公开(公告)日：1998-01-22
申请号：AU2861097
申请日：1997-07-11
Applicant: CANON KK
Inventor： SUGAMA SADAYUKI , ASAI AKIRA , ISHINAGA HIROYUKI , KASHINO TOSHIO , KUDO KIYOMITSU , SUGIYAMA HIROYUKI
Abstract: A liquid ejecting method includes displacing a movable member having a free end by bubble generation in a bubble generating region; the improvement residing in: that a fulcrum of said movable member is disposed adjacent to one side of a displacement region where the free end of said movable member displaces, and an ejection outlet through which the liquid is ejected is disposed adjacent to the opposite side of the displacement region; that there is provided a first period in which a displacing speed of the free end of the movable member is higher than a growing speed of the bubble generated in the bubble generating region toward the movable member, before the bubble reaches its maximum size.
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公开(公告)号：AU2054995A
公开(公告)日：1996-01-04
申请号：AU2054995
申请日：1995-06-07
Applicant: CANON KK
Inventor： SUZUKI NORITAKE , SUZUKI HIDETOSHI , ASAI AKIRA , YAMANO AKIHIKO
Abstract: An electron-beam generating device, in which a number of cold cathode elements are matrix-wired, as well as a method of driving the device, is applied to an image forming apparatus. Statistical calculations are performed in advance with regard to a required electron-beam output, and loss produced in the matrix wiring is analyzed. Drive signals are corrected by deciding optimum correction values based upon the analytical results. As a result, when rows of the matrix are driven successively row by row, the intensity of the outputted electron beams can made accurate for any driving pattern.
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公开(公告)号：CA2151202A1
公开(公告)日：1995-12-09
申请号：CA2151202
申请日：1995-06-07
Applicant: CANON KK
Inventor： SUZUKI NORITAKE , SUZUKI HIDETOSHI , ASAI AKIRA , YAMANO AKIHIKO
Abstract: An electron-beam generating device, in which a number of cold cathode elements are matrix-wired, as well as a method of driving the device, is applied to an image forming apparatus. Statistical calculations are performed in advance with regard to a required electronbeam output, and loss produced in the matrix wiring is analyzed. Drive signals are corrected by deciding optimum correction values based upon the analytical results. As a result, when rows of the matrix are driven successively row by row, the intensity of the outputted electron beams can made accurate for any driving pattern.
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公开(公告)号：DE69108438T2
公开(公告)日：1995-09-14
申请号：DE69108438
申请日：1991-04-26
Applicant: CANON KK
Inventor： ASAI AKIRA
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公开(公告)号：DE68921806D1
公开(公告)日：1995-04-27
申请号：DE68921806
申请日：1989-07-14
Applicant: CANON KK
Inventor： ASAI AKIRA
Abstract: A liquid jet recording head comprises a substrate (103) having a support; and an electricity-heat converter (107) arranged on the support, having a heat-generating resistor layer and a pair of electrodes (105, 106) electrically connected to the heat-generating resistor, with a heat-generating portion being formed between the pair of electrodes; where DELTA T = TH - To being 20 DEG C or more and 100 DEG C or less; and a member provided on the substrate for forming the liquid channel for the liquid for recording (To is the peak value of the temperature of the electricity-heat converter under driven state when no liquid for recording exists at the position of the surface of the substrate corresponding to the heat-generating portion on the surface where the bubble generated in the liquid for recording disappears; and TH is the peak value of the temperature of the electricity-heat converter under driven state when no liquid for recording exists at other positions than the above position).
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