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1. 发明专利

JP2003211708A INK-JET RECORDING APPARATUS, AND INK-JET RECORDING METHOD 审中-公开
公开(公告)号：JP2003211708A
公开(公告)日：2003-07-29
申请号：JP2002007858
申请日：2002-01-16
申请人： CANON KK
发明人： YASHIMA MASATAKA , SHIBATA RETSU
IPC分类号： B41J2/01 , B41J2/205
摘要： PROBLEM TO BE SOLVED: To record a preferable gradation image without gradation inversion or the like. SOLUTION: At the time of executing multi-gradation recording using a plurality of kinds of inks having different concentrations for colors of the same hue, by changing the kind of the ink and the number of ink droplets used in recording pixels, an ink distribution table for determining the combination of the kind of the ink and the number of ink droplets is produced by a distribution table preparing part 2 corresponding to the gradation value based on the relative concentration of each ink inputted from an ink concentration ratio input part 1. According to the ink distribution table, the combination to be used for recording the pixels is selected for executing a multi-value process and distributing data for each ink. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003136701A INK JET RECORDER AND ITS IMAGE CORRECTING METHOD 审中-公开
公开(公告)号：JP2003136701A
公开(公告)日：2003-05-14
申请号：JP2001340612
申请日：2001-11-06
申请人： CANON KK
发明人： YASHIMA MASATAKA , SHIBATA RETSU , KOITABASHI NORIFUMI , TSUBOI HITOSHI , FUJIMOTO YASUNARI
IPC分类号： B41J2/01 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To perform correction appropriately when ejection of ink from a recording head is reduced or stopped due to various causes. SOLUTION: A plurality of shading patterns having different duties are recorded, a nozzle ejection of ink therefrom is reduced or stopped due to increase of channel resistance is judged from the difference of density distribution, and correction processing is performed differently depending on the state of the nozzle.

3. 发明专利

JP2002067296A INK-JET PRINTING METHOD AND DEVICE 失效
公开(公告)号：JP2002067296A
公开(公告)日：2002-03-05
申请号：JP2000266158
申请日：2000-09-01
申请人： CANON KK
发明人： SHIBATA RETSU , KOITABASHI NORIFUMI , YASHIMA MASATAKA
IPC分类号： B41J2/01 , B41J2/165 , B41J2/21
摘要： PROBLEM TO BE SOLVED: To reduce deterioration of the image quality by white striped derived from non-ejection or defected nozzle in ink-jet recording using a coloring material ink and a printing property improving ink, and to enable use of a recording head having a non-ejection or defective nozzle by reducing deterioration of the image quality so as to prolong the replacement life of the recording head. SOLUTION: By preventing impact of a printing property improving ink in the vicinity of a stripe part, ink dots in the vicinity of the stripe is blurred so as to be unrecognizable.

4. 发明专利

JP2002029072A INK JET RECORDING APPARATUS, ITS METHOD, AND COMPUTER READABLE MEMORY 失效
公开(公告)号：JP2002029072A
公开(公告)日：2002-01-29
申请号：JP2000214796
申请日：2000-07-14
申请人： CANON KK
发明人： SHIBATA RETSU
IPC分类号： B41J2/205 , G06K15/10 , H04N1/40
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method for ink jet recording whereby a high-speed recording for recording highly fine input images at high speeds is realized. SOLUTION: Discharging/non discharging ink from a plurality of ink discharge recording elements is controlled in accordance with a pixel density distribution pattern and its gradation value with reference to a first table indicating a correspondence between a plurality of inks and gradation values of recording pixels according to pixel density distribution patterns and their gradation values, and a second table indicating combinations of the density distribution patterns of recording pixels and ink discharge recording elements correspondingly to the gradation values.

5. 发明专利

JP2001105631A RECORDING METHOD AND RECORDING DEVICE 失效
公开(公告)号：JP2001105631A
公开(公告)日：2001-04-17
申请号：JP28581499
申请日：1999-10-06
申请人： CANON KK
发明人： YASHIMA MASATAKA , SHIBATA RETSU
IPC分类号： B41J2/205 , B41J2/01
摘要： PROBLEM TO BE SOLVED: To provide a recording method capable of preventing generation of 'migiation' and 'stripes' without deteriorating the recording speed. SOLUTION: A recording method uses a plurality of ink-jet recording heads for ejecting inks of different concentrations, and for executing multi-gradation recording, by changing the kind of the ink and the number of ink droplets to be ejected to each pixel on a recording medium. Ink concentration and combination data 1 including a plurality of kinds of inks to be ejected according to each gradation value and combinations of numbers of ink droplets are prepared, so that the combination to be used is selected by a data distribution part 3 such that the plurality of the combinations can be used by the substantially same frequency with respect to each gradation value.

6. 发明专利

JPH11317879A IMAGE DATA PROCESSING METHOD, SYSTEM, IMAGE FORMING DEVICE AND GRADATION RECORDING METHOD 失效
公开(公告)号：JPH11317879A
公开(公告)日：1999-11-16
申请号：JP12237498
申请日：1998-05-01
申请人： CANON KK
发明人： YASHIMA MASATAKA , TAKAYAMA HIDETO , SHIBATA RETSU
IPC分类号： B41J2/52 , G06T5/00 , H04N1/23 , H04N1/405 , H04N1/46
摘要： PROBLEM TO BE SOLVED: To provide an excellent gradation image by applying multi-value processing while changing a quantization level of the image so as to reduce the possibility where pixels of a same density level are consecutive. SOLUTION: In the image data processing method, input image data are quantized by n-sets of quantization levels to form an image with a recording head that attains recording of one pixel for n-sets of gradation corresponding to n-sets of the quantization levels. In the S10, a line to be multi-value-processed is read and a type A or B that is a combination of m-sets of quantization levels among n-sets of quantization levels depending on whether the line is an odd number line or an even number line in the S11, 12, 14. Then the input image data are quantized at m-set of the selected quantization levels in the S13, S15.

7. 发明专利

JPH11129505A INK JET RECORDER 失效
公开(公告)号：JPH11129505A
公开(公告)日：1999-05-18
申请号：JP31277097
申请日：1997-10-29
申请人： CANON KK
发明人： SHIKAME OSAMU , YOMO MAKOTO , YASHIMA MASATAKA , SHIBATA RETSU
IPC分类号： B41J2/175 , B41J2/05
摘要： PROBLEM TO BE SOLVED: To prevent variation of a quantity of ejected ink during recording even when using an ink tank having a large capacity for storing ink by providing a means for adjusting a height of the ink tank such that a liquid level in the ink tank is always equal to a height of an ink ejection face of a recording medium. SOLUTION: Each of ink tanks 25 (25a, 25b, 25c, 25d) is supported with each of spring bases 22 (22a, 22b, 22c, 22d) such that it is balanced with an upward elastic force of each of the respective spring bases which are independently provided. In this structure, when ink in the ink tank 25 on the spring base 22 is consumed and the weight thereof is reduced by, for example, 12g, the liquid level is lowered by 10 mm. However, as the ink tank 25 is urged upward by the spring, it is lifted by 10 mm, thereby balancing the weight with the reduction of the ink. As a result, the height of the liquid level in the ink tank 25 is maintained at a constant level. As the damper is provided thereto, it is possible to suppress the vibration of the liquid level even when a sudden change in condition, such an earthquake, occurs.

8. 发明专利

JPH09193530A RECORDING SHEET AND INK JET RECORDING METHOD 失效
公开(公告)号：JPH09193530A
公开(公告)日：1997-07-29
申请号：JP343896
申请日：1996-01-12
申请人： CANON KK
发明人： SHIBATA RETSU , MORI AKIHIRO
IPC分类号： B41M5/00 , B41M5/50 , B41M5/52
摘要： PROBLEM TO BE SOLVED: To provide an inexpensively ink jet recording apparatus miniaturized in apparatus constitution by using a recording sheet for gradation image recording ink jet containing a region perfectly colored by black so that reflecting optical density is a predetermined value or more. SOLUTION: A required gradation image part is predetermined and a latent image is recorded on a blank part other than the required gradation image part in a black solid state so that the optical density after development of a gradation image unrecorded part being a black solid part becomes 2.0 or more. A thermal developing photosensitive member has a photosensitive layer 17 on its support 18 and further has a protective layer 16 thereon. The protective layer 17 is formed by coating the photosensitive layer 17 with a dispersion containing at least pigment of which the surface is treated with a coupling agent and a water-soluble compd. A water-soluble polymeric material to be used is dissolved in 100g of water in an amt. of 5g or more.

9. 发明专利

JPH0593905A LIQUID CRYSTAL ELEMENT AND LIQUID CRYSTAL DISPLAY DEVICE, DISPLAY METHOD USING THESE ELEMENT AND DEVICE 失效
公开(公告)号：JPH0593905A
公开(公告)日：1993-04-16
申请号：JP8617092
申请日：1992-03-10
申请人： CANON KK
发明人： YOSHINAGA KAZUO , ONISHI TOSHIICHI , SATO KOICHI , TOSHIDA YOSHI , EGUCHI GAKUO , SHIBATA RETSU
IPC分类号： C09K19/00 , C09K19/54 , G02F1/1333 , G02F1/1334
摘要： PURPOSE:To provide the liquid crystal element which can make display of a good contrast with a large screen with substantially no hysteresis and the display device constituted by using this element. CONSTITUTION:This liquid crystal element is constituted by putting a display layer 103 consisting of a mixture composed of a specific incompatible high- polymer material 104and a low-molecular liquid crystal compd. 105 between substrates 101 and 101' having electrodes 102, 102' and has

10. 发明专利

JPH0538800A PRINTING METHOD 失效
公开(公告)号：JPH0538800A
公开(公告)日：1993-02-19
申请号：JP30327991
申请日：1991-11-19
申请人： CANON KK
发明人： MORI AKIHIRO , SHIBATA RETSU , KONDO YUJI
IPC分类号： B41C1/00 , B41F13/00 , G03F7/00 , G03F7/34
摘要： PURPOSE:To solve a problem such as a flaw and fouling to a printing plate by forming superposing and non-superposing patterns to a superposing layer under the state, in which an original plate for photosensitive printing having the superposing layer between a support and a separate film is installed to a plate cylinder, peeling the separate film and constituting the printing plate. CONSTITUTION:The printing method is composed of a printing-image forming section A, a peeling section B and a printing section C, and a printing image pattern is formed to an original plate 12 for photosensitive printing mounted onto the circumferential surface of a plate cylinder 13 in the printing-image forming section A, and the printing-image forming section A is constituted of an optical system including an optical unit 130. The original plate 12 for photosensitive printing is formed by shaping a superposing layer 101 between a support 100 and a separate film 19, and superposing and non-superposing patterns are formed to the superposing layer 101. In the peeling section B, the separate films 19 on the original plate 12 are peeling by a separating guide 20, and the separate films 19 are recovered in a recovery tray 22. The original plate 12 is used as a printing plate by peeling the separate films 19, and printing is conducted by employing the original plate.

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