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公开(公告)号：EP4120024A1
公开(公告)日：2023-01-18
申请号：EP22182993.0
申请日：2022-07-05
申请人： Ricoh Company, Ltd.
发明人： KONNO, Yoshio , ISHII, Tatsuya , MATSUMOTO, Tohru , AOYAGI, Kohta , NAKAYAMA, Satoshi , MAKINO, Hideyo , MIKAJIRI, Susumu , YAMAZAKI, Kimiharu
摘要： A reading device (100) and an image forming apparatus (100) are provided. The reading device (100) includes an image reading device (130) configured to read an image on a recording medium (S) being conveyed, a background device (140a, 140b, 140c, 140d) serving as a background image when the image is read by the image reading device (130), and a foreign-object detector (133) configured to compare a first read image obtained as the background device (140a, 140b, 140c, 140d) is read by the image reading device (130) with a second read image obtained as the background device (140a, 140b, 140c, 140d) and the recording medium (S) are read by the image reading device (130) to detect an attached foreign object. The image forming apparatus (100) includes the reading device (100) and an image forming device (110).
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2.发明公开
公开(公告)号：EP4060414A1
公开(公告)日：2022-09-21
申请号：EP22154944.7
申请日：2022-02-03
申请人： Ricoh Company, Ltd.
发明人： ISHITSUKA, Ryoh , AOYAGI, Kohta , EBINUMA, Ryosuke , NAKAYAMA, Satoshi , YAMAZAKI, Kimiharu , MATSUMOTO, Tohru , ISHII, Tatsuya
IPC分类号： G03G15/00
摘要： An image inspecting device (500) includes an abnormality detector (140) and an area setting unit (150). The abnormality detector (140) is configured to detect an abnormality of an inspection object image (G). The area setting unit (150) is configured to set a non-detection area (R1, R2) to be excluded from a detection object area within which the abnormality detector (140) detects an image abnormality and set an area including an abnormality detection portion as the non-detection area when a detection result obtained by the abnormality detector (140) satisfies a non-detection condition.
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3.发明公开
公开(公告)号：EP4057071A1
公开(公告)日：2022-09-14
申请号：EP22158924.5
申请日：2022-02-25
申请人： Ricoh Company, Ltd.
发明人： YAMAZAKI, Kimiharu , AOYAGI, Kohta , ISHII, Tatsuya , MATSUMOTO, Tohru , NAKAYAMA, Satoshi , EBINUMA, Ryosuke , ISHITSUKA, Ryoh
IPC分类号： G03G15/00
摘要： An image reading device (500) includes an image reader (130) and a defective image determination unit (43). The image reader (130) is configured to read an image on a recording medium (S). The defective image determination unit (43) is configured to obtain defective image information and defect type information based on the image on the recording medium (S) read by the image reader, and determine an abnormality of the image on the recording medium (S) based on the defective image information and the defect type information.
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公开(公告)号：EP3883228A1
公开(公告)日：2021-09-22
申请号：EP21161808.7
申请日：2021-03-10
申请人： Ricoh Company, Ltd.
发明人： YAMAZAKI, Kimiharu , MAKINO, Hideyo , MIKAJIRI, Susumu , MATSUMOTO, Tohru , NAKAYAMA, Satoshi , AOYAGI, Kohta , ISHII, Tatsuya
摘要： An image position detection apparatus 400 includes a reading unit 401 configured to detect a position of a print sheet M, a counter member 93 arranged on an opposite side of the print sheet M from the reading unit 401, and configured to switch a background color of the print sheet M detected by the reading unit 401, and a contact glass 94 arranged between the reading unit 401 and the counter member 93. The print sheet M is conveyed between the contact glass 94 and the counter member 93 while being in contact with the contact glass 94. The contact glass 94 is provided with a pair of longitudinal lines 406 serving as an indicator indicating a reference position. The reading unit 401 is configured to calculate, based on position information detected from the pair of longitudinal lines 406, the position of the print sheet M.
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公开(公告)号：EP4249270A1
公开(公告)日：2023-09-27
申请号：EP23163208.4
申请日：2023-03-21
申请人： Ricoh Company, Ltd.
摘要： A liquid application apparatus (1) sequentially moves to each of a plurality of divided areas obtained by dividing a liquid application area and discharges liquid to connect images. The liquid application apparatus (1) includes an imager (8) and an image connection measuring unit (51). The imager (8) reads a reference position set in an area where end portions of the plurality of divided areas overlap with each other. The image connection measuring unit (51) sets the reference position to a reference origin of image writing.
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公开(公告)号：EP4053637A1
公开(公告)日：2022-09-07
申请号：EP22157302.5
申请日：2022-02-17
申请人： Ricoh Company, Ltd.
发明人： NAKAYAMA, Satoshi , MATSUMOTO, Tohru , AOYAGI, Kohta , EBINUMA, Ryosuke , ISHITSUKA, Ryoh , YAMAZAKI, Kimiharu , ISHII, Tatsuya
IPC分类号： G03G15/00
摘要： An image inspector (1500) includes a recording device (20) and a control unit (100). The reading device (20) is configured to read an image on a recording medium (P). The control unit (100) is configured to determine whether the recording medium (P) has a wrinkle and an edge folding based on a plurality of positions on the image on the recording medium (P) read by the reading device (20) satisfying a predetermined relation. The control unit (100) is configured to determine whether the recording medium (P) has the wrinkle based on the predetermined relation, and then determine whether the recording medium (P) has the edge folding based on the predetermined relation.
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8.发明公开
公开(公告)号：EP4043964A1
公开(公告)日：2022-08-17
申请号：EP22154202.0
申请日：2022-01-31
申请人： Ricoh Company, Ltd.
发明人： AOYAGI, Kohta , MATSUMOTO, Tohru , YAMAZAKI, Kimiharu , NAKAYAMA, Satoshi , EBINUMA, Ryosuke , ISHIZUKA, Ryoh , ISHII, Tatsuya
摘要： An image abnormality detecting device (500) includes an image reader (130), an abnormality detector (140), a pattern holder (160a, 160b, 260, 360), and a control unit (150). The image reader (130) is configured to read an image on a recording medium (S). The abnormality detector (140) is configured to detect abnormality of the image based on read information of the image on the recording medium (S), read by the image reader (130). The pattern holder (160a, 160b, 260, 360) has a check pattern (171, 172, 271, 272a, 272b, 272c, 273, 471-474) and is disposed within a reading area of the image reader (130). The control unit (150) is configured to inspect a detecting operation of the abnormality detector (140) based on read information of the check pattern (171, 172, 271, 272a, 272b, 272c, 273, 471-474) read by the image reader (130).
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公开(公告)号：EP3828636A1
公开(公告)日：2021-06-02
申请号：EP20210167.1
申请日：2020-11-27
申请人： Ricoh Company, Ltd.
发明人： YAMAZAKI, Kimiharu , MAKINO, Hideyo , MIKAJIRI, Susumu , NAKAYAMA, Satoshi , YAMAMURA, Hiroki , AOYAGI, Kohta , MATSUMOTO, Tohru
IPC分类号： G03G15/00
摘要： An image reading device (50) includes a plurality of image reading units (60A; 60B) arranged at different positions in a width direction perpendicular to a conveyance direction of a recording medium (P) to read an image on the recording medium (P) at respective image reading positions (E1; E2) and a conveyance roller pair (55) that conveys the recording medium (P) to the plurality of image reading units (60A; 60B). The conveyance roller pair (55) includes a drive roller (55a) and a driven roller (55b). The plurality of image reading units (60A; 60B) includes an upstream image reading unit (60A) and a downstream image reading unit (60B). The relation X2 = n1 × π × Dla is satisfied, where X2 represents a reading interval (X2) between the respective image reading positions (E1; E2), nl represents an integer, and D1a represents the diameter (D1a) of the drive roller (55a).
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公开(公告)号：EP3805863A1
公开(公告)日：2021-04-14
申请号：EP20197924.2
申请日：2020-09-23
发明人： HEMMI, Kaori , KATO, Koichi , YAMAZAKI, Kimiharu , FUSHINOBU, Kazuyoshi , KURAMOTO, Shinichi , KAWASAKI, Shunsuke
摘要： An image forming apparatus (100) includes a plurality of temperature-influence members (25a, 25e, 26a), a first-point temperature acquisition unit (103), a second-point temperature estimation unit (120), and a controller (110). The plurality of temperature-influence members (25a, 25e, 26a) have influence on a temperature of a recording medium (S) on which an image is formed. The first-point temperature acquisition unit (103) is configured to detect or estimate a temperature of the recording medium (S) at a first point. The second-point temperature estimation unit (120) is configured to estimate a temperature of the recording medium (S) at a second point, based on a detection result of at least one of a temperature of the recording medium (S) at a point different from the second point and a temperature of a member (25a) or atmosphere. The controller (110) is configured to control the plurality of temperature-influence members (25a, 25e, 26a), based on an acquisition result from the first-point temperature acquisition unit (103) and an estimation result from the second-point temperature estimation unit (120).
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