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公开(公告)号：DE69028345D1
公开(公告)日：1996-10-10
申请号：DE69028345
申请日：1990-04-17
Applicant: CANON KK
Inventor： KURITA MITSURU , IKEDA YOSHINORI
Abstract: An image processing apparatus, comprising process means for processing an input image; detection means for detecting an isolated point in the input image; and control means for controlling the image processing by the process means according to a detection of the isolated point by the detection means, thereby eliminating a noise conventionally involved in a color conversion to red of an image contour.
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公开(公告)号：DE3486390D1
公开(公告)日：1995-07-13
申请号：DE3486390
申请日：1984-03-07
Applicant: CANON KK
Inventor： IKEDA YOSHINORI
Abstract: An image processing apparatus has a character code buffer for receiving decoded character signal and generating data presenting a designated character image portion in response a character read address signal, a character generator for converting the readout data to dot data, a character image memory for storing the dot data in a memory area in response to a character write address signal, an image buffer memory for receiving decoded image data and generating data representing a designated half tone image region in response to a halftone read address signal, processing circuit blocks for performing a series of predetermined operations for the readout data, and a half tone image memory for storing the processed data in response to a halftone write address signal.
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公开(公告)号：DE3336588C3
公开(公告)日：1995-04-20
申请号：DE3336588
申请日：1983-10-07
Applicant: CANON KK
Inventor： IKEDA YOSHINORI
Abstract: A color image processing apparatus includes a signal generator for generating color signals representative of at least three color components, each having a density level, for one pixel. A detector detects a specific color having a density level exceeding a predetermined density level by detecting the signals representative of the three color components and generates a specific signal representative of that specific color. A first processor is responsive to the color signals to conduct half-tone reproduction processing of the color signals to output color output signals. A second processor is responsive to the specific signal for outputting a signal of a predetermined level. Finally, a prohibiting device prohibits the output of the color output signals by the first processor when the second processor outputs the signal of the predetermined level. In a preferred embodiment, the specific color is black. The apparatus can reproduce an image including a half-tone portion and a character or line portion with excellent halftone reproduction characteristics and excellent sharpness of the character or line portion.
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公开(公告)号：DE3750627D1
公开(公告)日：1994-11-10
申请号：DE3750627
申请日：1987-11-13
Applicant: CANON KK
Inventor： OUTA KENICHI , SUZUKI YASUMICHI , IKEDA YOSHINORI
Abstract: A color film reading apparatus of this invention has holding means for holding a color negative film therein; illuminating means for projecting illumination light onto the color negative film; reading means for reading image data from the color negative film; shading correcting means for performing shading correction; and controlling means for controlling the reading means to cause the reading means to read data relative to an unexposed portion of the color negative film to thereby obtain shading correction data for the shading correcting means. The apparatus is capable of generating high-gradation color signals from either of color negative and positive films. This invention further provides an image forming apparatus capable of producing a high-gradation image from either of a film-type original document or a reflection-type original document.
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公开(公告)号：DE3341774C3
公开(公告)日：1994-09-01
申请号：DE3341774
申请日：1983-11-18
Applicant: CANON KK
Inventor： IKEDA YOSHINORI
IPC: G03G15/041 , G03G15/047 , G03G15/04
Abstract: An image forming apparatus has as control unit which controls an image formation area on a photosensitive drum in accordance with original document size information detected by an original document size detector and magnification/reduction scale determined by a selected magnification/reduction mode. Unnecessary area other than a desired image formation area is discharged.
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Patent Agency Ranking
公开(公告)号：CA1317886C
公开(公告)日：1993-05-18
申请号：CA580120
申请日：1988-10-12
Applicant: CANON KK
Inventor： SAKAI MASANORI , HORII HIROYUKI , KOMINE TAKAYUKI , SUZUKI YASUMICHI , IKEDA YOSHINORI , HONMA TOSHIO
Abstract: There is disclosed an image processing apparatus capable of reading image and synthesizing it with another standardized image signal supplied from outside and stored in a memory provided in the apparatus.
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公开(公告)号：DE3484661D1
公开(公告)日：1991-07-11
申请号：DE3484661
申请日：1984-03-07
Applicant: CANON KK
Inventor： IKEDA YOSHINORI
Abstract: An image processing apparatus has a character code buffer for receiving decoded character signal and generating data presenting a designated character image portion in response a character read address signal, a character generator for converting the readout data to dot data, a character image memory for storing the dot data in a memory area in response to a character write address signal, an image buffer memory for receiving decoded image data and generating data representing a designated half tone image region in response to a halftone read address signal, processing circuit blocks for performing a series of predetermined operations for the readout data, and a half tone image memory for storing the processed data in response to a halftone write address signal.
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公开(公告)号：FR2627654A1
公开(公告)日：1989-08-25
申请号：FR8813574
申请日：1988-10-14
Applicant: CANON KK
Inventor： SAKAI MASANORI , HORII HIROYUKI , KOMINE TAKAYUKI , SUZUKI YASUMICHI , IKEDA YOSHINORI , HONMA TOSHIO
Abstract: There is disclosed an image processing apparatus capable of reading image (at 1) and synthesizing it (at 12) with another standardized image signal supplied from outside and stored (at 3) in a memory provided in the apparatus.
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公开(公告)号：DE3432515A1
公开(公告)日：1985-03-21
申请号：DE3432515
申请日：1984-09-04
Applicant: CANON KK
Inventor： IKEDA YOSHINORI , AOKI TAKAO
Abstract: There is provided an image forming device wherein a half-tone pattern having a recording portion and non-recording portion is formed on a recording medium, a value corresponding to the image density of the half-tone pattern is detected, and a high quality half-tone is obtained by controlling image signals by the above detection output or quantization means for the binary or multi-value conversion of image signals.
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公开(公告)号：JP2561439B2
公开(公告)日：1996-12-11
申请号：JP9510094
申请日：1994-05-09
Applicant: CANON KK
Inventor： HONMA TOSHIO , IKEDA YOSHINORI , SUZUKI YASUMICHI
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