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公开(公告)号：JP2003154664A
公开(公告)日：2003-05-27
申请号：JP2001358291
申请日：2001-11-22
Applicant: CANON KK
Inventor： SASAKI TOSHIAKI , TACHIHARA MASAYOSHI , TAMURA YASUYUKI , ASAI AKIRA , MURAI KEIICHI , KAWAI TSUTOMU , SUGAMA SADAYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a liquid ejection head ejecting a micro liquid drop on the order of subpico liter or less. SOLUTION: An ejection opening 4 is provided, at a position of an ejection opening plate 5 recessed from an ejection opening plane 5a to which the ejection opening 4 is opening, with a throttle part 7 where the transverse sectional area of the ejection opening 4 is constricted abruptly as compared with that of other parts. Liquid being ejected is held in the ejection opening 4 while forming a meniscus 8 between the ejection opening plane 5a and the throttle part 7. In other words, the throttle part 7 is located in the liquid in the passage from a liquid channel 3 to the ejection opening plane 5a of the ejection opening plate 5.
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公开(公告)号：JP2001277511A
公开(公告)日：2001-10-09
申请号：JP2000095000
申请日：2000-03-30
Applicant: CANON KK
Inventor： SHINJO KATSUHIKO , ASAI AKIRA
IPC: B41J2/05
Abstract: PROBLEM TO BE SOLVED: To eject a liquid drop stably by enhancing energy efficiency with regard to ejection of a liquid ejection head. SOLUTION: The liquid ejection head 31 is manufactured such that a nondimensional number α based on the forward inertance A1, the rearward inertance A2, the outside pressure Pamb, the volume Vd of liquid ejected from an ejection opening 38, the impulse per unit area applied to the liquid by initial bubbling impact at the time of bubbling, i.e., the bubbling impact II, and resistance B1 will be 0.5 or below.
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93.发明专利
公开(公告)号：JP2001101158A
公开(公告)日：2001-04-13
申请号：JP28037799
申请日：1999-09-30
Applicant: CANON KK
Inventor： SHINJO KATSUHIKO , ASAI AKIRA
IPC: G06F17/10
Abstract: PROBLEM TO BE SOLVED: To execute flow analysis by using inertance allowed to be applied to non-compressive fluid in a multi-opening pipeline. SOLUTION: Non-compressive fluid exists in a pipeline 1 forming a plurality of openings 31 to 3n whose areas are S1 to Sn and pressures P1 to Pn are applied to respective openings 31 to 3n. The inertance A of the non-compressive fluid is defined by an equation 1 (Aij=-ρ/ vector Φj.vector nidSi) and the flow of the non-compressive fluid in the pipeline is analyzed by using the inertance A.
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公开(公告)号：JP2000339292A
公开(公告)日：2000-12-08
申请号：JP14712699
申请日：1999-05-26
Applicant: CANON KK
Inventor： SUGIOKA HIDEYUKI , ASAI AKIRA
Abstract: PROBLEM TO BE SOLVED: To accurately simulate the movement of particles in a noncompressed fluid guaranteeing momentum and the preservation of energy. SOLUTION: Concerning the method and the device for simulation with which the character of a system including the fluid is simulated, the non-compressed fluid is regarded as N pieces of particle groups having a mass mj (j=1, 2,..., N) and a velocity uj, a restriction power to be generated is calculated by charging a restriction condition, on which the diffusion of a relative velocity related to each particle is zero, (2) and while using that found restriction power, the movement of particles is calculated (3). In this case, a differentiable integration nucleus ϕj having the character of ∫∫∫ϕjdr=1 is used for calculation of the restriction power and when the relative velocity of another particle (j) is defined as (uj-uf), concerning a certain particle (f), discrete approximation is performed on the restriction condition of a residual Rf=∫∫∫ϕ f nabla.(Σ (ui-uf) ϕj) dr.
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公开(公告)号：JP2000243286A
公开(公告)日：2000-09-08
申请号：JP3934599
申请日：1999-02-18
Applicant: CANON KK
Inventor： OKUDA MASAHIRO , ASAI AKIRA
Abstract: PROBLEM TO BE SOLVED: To correctly evaluate the elemental parameter by directly operating a crack width on the basis of the data on electron emission current, capable of easily measured by dealing a width of an electron emitting portion of a cold cathode in vacuum as a prescribed function of a distance between its element and an anode electrode, the element voltage, and the anode voltage of a singular point position of the correlation between the anode voltage and the electron emitting current. SOLUTION: A width D of an electron emissive portion is represented by formula I, a coefficient C (Vf, Wf) is represented by formula II, and a measurement operation part for dealing them is preferably provided. In the formulas I and II, Vf is elemental voltage for driving, H is parallel distance between electron emissive element, and anode electrode, Vak is anode voltage at a singular point of the correlation of voltage Ia of anode and an electron emission current Ie flowing in the same, Wf is work function, and (e) is elementary electric charge. The crack width D formed by the foaming of a conductive thin film on a board is operated on the basis of the electron emission current, which is the current characteristic of the anode voltage and can be easily measured, which dispenses with various kinds of assumed settings relative to the crack portion, so that error factors can be excluded.
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Patent Agency Ranking
公开(公告)号：JP2000235649A
公开(公告)日：2000-08-29
申请号：JP3650899
申请日：1999-02-15
Applicant: CANON KK
Inventor： ASAI AKIRA
Abstract: PROBLEM TO BE SOLVED: To easily decide whether a prescribed point exists inside a closed curve by an integer operation. SOLUTION: The graphic inside and outside deciding method that decides whether a prescribed point is included inside a closed curve reads each coordinate value of dot sequences constituting a closed curve by approximating the closed curve to a straight line more (S1), acquires the coordinate values of the prescribed point (S2), allocates an integer value to each linear part constituting the closed curve (S3) on the basis of the prescribed point and each coordinate value of the dot sequences constituting the closed curve, adds the integer value allocated to each linear part along the closed curve (S6) and decides whether the prescribed point exists inside the closed curve on the basis of the addition results (S7 to S9).
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公开(公告)号：JPH11328150A
公开(公告)日：1999-11-30
申请号：JP13397898
申请日：1998-05-15
Applicant: CANON KK
Inventor： ASAI AKIRA , MATSUTANI SHIGEKI , OKUDA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To quickly and accurately analyze a modeled survival system by calculating a survival rate in the distance of an object to be solved in the survival system by a specified condition in an arithmetic means. SOLUTION: A CPU 21 stores the values of a replenishment success rate βand an advancing distance X from the keyboard 23 of this survival system analyzer at a RAM 25, calculates the respective terms of the total sum Σ from L=0 to by expressions I and II based on the stored values of the replenishment success rate βand the advancing distance X, and stores the calculated results of the respective terms for L=0 to in the RAM 25. Then, the total sum Σ of the stored calculated results of the respective terms is calculated by executing a total sum calculation module, the calculated total sum Σ is substituted in the expression III and the survival rate P(XS) is obtained. In the expressions I and III, is a maximum integer not exceeding X, and θis a step function.
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公开(公告)号：JPH11110569A
公开(公告)日：1999-04-23
申请号：JP28113797
申请日：1997-09-30
Applicant: CANON KK
Inventor： ASAI AKIRA , MATSUTANI SHIGEKI , NODA TOMOYUKI
IPC: G06T7/60
Abstract: PROBLEM TO BE SOLVED: To discriminate the inner point of a graphic in a short time by checking whether or not all the outer products of two vectors whose terminating point is successive two points of the sequenced vertexes of a projected polygon and starting point is the point P are the same sign and discriminating whether or not the point P is present inside the projected polygon when the polygon is the projected polygon. SOLUTION: Whether or not all the outer products of the two vectors corresponding to two sides holding the polygon formed by the set of the directed vertexes on a plane and the sequenced vertexes of the polygon to the point P on the plane there between are of the same sign is checked, and whether or not the polygon is the projected polygon is discriminated. Then, when it is the projected polygon occording to the discrimination, whether or not all the outer products of the two vectors whose terminating point is successive two points of the sequenced vertexes of the projected polygon and starting point is a point P on the plane are of the same sign is checked, and whether or not the point P on the plane is present inside the projected polygon is discriminated. Thus, calculation force required for discriminating the inner point of the graphic is reduced and the inner point of the graphics is discriminated in a short time.
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公开(公告)号：JPH07182970A
公开(公告)日：1995-07-21
申请号：JP34547993
申请日：1993-12-22
Applicant: CANON KK
Inventor： ASAI AKIRA , SUGIOKA HIDEYUKI , OKUDA MASAHIRO
IPC: H01J9/02
Abstract: PURPOSE:To uniformize the electron emission characteristics by applying constant voltage for a prescribed period and then applying voltage higher than the former level for electric communication treatment to form an electron emitting part of an electron emitting element. CONSTITUTION:An organometal solution is applied between element electrodes 5, 6 formed on the surface of an insulating substrate 1 to form an organometal thin film and then the film is heated and fired to form an electron emitting part composing thin film 2. Following that, forming voltage with a prescribed voltage waveform is applied between the electrodes 5, 6 to locally break, deform, or denature the film 2 and to form an electron emitting part 3. At the time when the forming treatment is carried out, the film 2 is moderately heated at constant voltage and then heated by applying voltage higher than the former constant voltage to form the part 3 within a short period. Consequently, even if the resistance of each element is not even, forming can be carried out surely without causing overload. As a result, the characteristics of each element can be made uniform.
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公开(公告)号：JPH0765704A
公开(公告)日：1995-03-10
申请号：JP23596593
申请日：1993-08-30
Applicant: CANON KK
Inventor： SUGIOKA HIDEYUKI , ONISHI TOSHIICHI , OKUDA MASAHIRO , MATSUTANI SHIGEKI , MITOME MASANORI , ASAI AKIRA , OSADA YOSHIYUKI
Abstract: PURPOSE:To provide an electron emission element, where the island structure of superfine particles is controlled by the orientation property peculiar to an organic film so as to suppress the dispersion between elements, by arranging an organic film layer containing superfine particles between a pair of electrodes. CONSTITUTION:On an insulating substrate 4, an organic film layer 1 of both mediaphilic properties, which shows peculiar self composition by the mutual action of hydrophobic and hydrophilic radicals containing superfine particles such as ribosome 202 where, for example, conductive superfine particles 201 are sealed, is arranged between element electrodes 2 and 3. For the ribosome, the size and the retention efficiency into inner water phase of sealed matter can be controlled to some degree by making method, so the dispersion between elements can be controlled by controlling the island structure of the superfine particles. After current application treatment with the voltage applied between the electrodes 2 and 3, the substrate 4 and an insulating substrate 13, where a phosphor layer 11 and a transparent electrode 12 are arranged, are confronted with each other across a sealing member 14, and the space 15 is decompressed for sealing.
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