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1. 发明公开

EP4283407A3 IMAGE FORMING APPARATUS INCLUDING OPTICAL PRINT HEAD 审中-公开
公开(公告)号：EP4283407A3
公开(公告)日：2024-03-06
申请号：EP23197688.7
申请日：2018-10-11
申请人： CANON KABUSHIKI KAISHA
发明人： HOSOI, Shinichiro , IWAI, Hitoshi , TAMURA, Yuya , ISHIDATE, Takehiro , MOMOKA, Toshiki , ARUGA, Daisuke
IPC分类号： G03G15/04 , G03G21/00 , G03G21/16
摘要： An image forming apparatus includes a drum cartridge including a photosensitive drum, a movable optical print head including a light emitting element and a lens array, a cleaning member and a portion-to-be-contacted. The cleaning member includes a gripping portion to be gripped by the operator, a sliding portion configured to slide on and clean the light emergent surface, and a project portion projecting from the cleaning member. Said project portion is provided on said cleaning member between said gripping portion and said sliding portion with respect to longitudinal direction of said cleaning member. The photosensitive drum and a light emergent surface of the lens array are spaced from each other to permit insertion of said cleaning member therebetween. The portion-to-be-contacted provided in a main assembly and configured to be contacted by the cleaning member to prevent further insertion of said cleaning member cleaning said light emergent surface.

2. 发明公开

EP4265425A1 IMAGE FORMING DEVICE 审中-实审
公开(公告)号：EP4265425A1
公开(公告)日：2023-10-25
申请号：EP21906051.4
申请日：2021-08-10
申请人： CANON KABUSHIKI KAISHA
发明人： FURUTA Yasutomo
IPC分类号： B41J2/447 , B41J2/45 , G03G15/04 , H04N1/036
摘要： An image forming apparatus includes: an exposure head including a light emitting portion that includes a first electrode layer including a plurality of electrodes that are two-dimensionally arranged in a main scanning direction and a sub-scanning direction, a light emitting layer stacked on the first electrode layer, and a second electrode layer through which light is transmissible; and a controller configured to control a voltage applied to each of the plurality of electrodes in such a way that the light emitting layer emits light, in which the plurality of electrodes for forming an identical pixel are arranged in such a way that the electrodes partially overlap each other when viewed from the rotation direction, and an inter-centroid distance of the plurality of electrodes in the rotational axis direction is equal in the rotational axis direction, and d3 = W1/n (n is a natural number of 2 or more), in which W1 [mm] is a width of the electrode in the rotational axis direction, n is the number of electrodes for forming the identical pixel, and d3 [mm] is the equal inter-centroid distance in the rotational axis direction.

3. 发明授权

EP3862816B1 EXPOSURE DEVICE OF IMAGE FORMING APPARATUS 有权
公开(公告)号：EP3862816B1
公开(公告)日：2023-10-18
申请号：EP20204064.8
申请日：2020-10-27
发明人： Otsuka, Takuya
IPC分类号： G03G15/04 , G03G21/16

4. 发明公开

EP4202554A1 OPTICAL SCANNING APPARATUS AND ELECTRONIC IMAGING DEVICE 审中-实审
公开(公告)号：EP4202554A1
公开(公告)日：2023-06-28
申请号：EP21871380.8
申请日：2021-09-15
申请人： Zhuhai Pantum Electronics Co., Ltd.
发明人： NIE, Yongchao , WANG, Chao
IPC分类号： G03G15/04 , G03G15/043
摘要： The present disclosure provides an optical scanning apparatus and an electronic image-forming apparatus. In the image height expression of the scanned target surface, since the scanning coefficient B satisfies the condition of 0.7≤B≤0.9, the value of tan(B×θ) may become smaller. In order to maintain the magnitude of tan(B×θ) to ensure certain image height, on the one hand, it needs to increase effective scanning angle θ of the optical scanning apparatus; on the other hand, after effective scan angle θ increases, the magnitude of tan(B×θ) may increase, and the image-forming characteristic coefficient fc of the second optical unit may also be reduced to ensure certain image height. Therefore, the volume of the optical scanning apparatus may be reduced by combining improvements in above-mentioned two aspects, thereby achieving the purpose of reducing the printer volume and reducing production cost.

5. 发明公开

EP4141572A1 EXPOSURE DEVICE AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：EP4141572A1
公开(公告)日：2023-03-01
申请号：EP22166246.3
申请日：2022-04-01
申请人： FUJIFILM Business Innovation Corp.
发明人： TONOSU, Kenta , KASUYA, Yosuke , KOBAYASHI, Takahiko
IPC分类号： G03G21/16 , G03G15/04
摘要： An exposure device includes at least one light emitter that includes a substrate and a light-emitting device disposed on the substrate, and a position adjuster that includes a contact member having an outer periphery in contact with the substrate, a support member that rotatably supports the contact member, and at least one mover that is in contact with the support member to move the support member in a light emission direction of the light emitter.

6. 发明授权

EP3379338B1 IMAGE FORMING DEVICE AND LIGHT-EMITTING ELEMENT INCLUDED IN SAME 有权转让
公开(公告)号：EP3379338B1
公开(公告)日：2022-03-30
申请号：EP16866574.3
申请日：2016-10-27
发明人： KIM, Wan Chin , LEE, Wan Ho , KIM, Kyoung Man , KIM, Su Hwan , PARK, Yong Shik , HAN, Sang Koo
IPC分类号： G03G15/04 , F21K9/60 , F21V7/10 , F21V7/22

7. 发明授权

EP2643680B1 OPTICAL SENSOR AND IMAGE FORMING APPARATUS 有权
公开(公告)号：EP2643680B1
公开(公告)日：2021-11-17
申请号：EP11842775.6
申请日：2011-11-25
发明人： OHBA, Yoshihiro , SUGAWARA, Satoru , ISHII, Toshihiro , HOSHI, Fumikazu
IPC分类号： G01B11/06 , G03G15/00 , G03G15/04 , G03G15/32 , G01N21/21 , G01N21/55 , G01N21/57 , G01N33/34 , G03G15/043

8. 发明授权

EP2592483B1 Writing device, image forming apparatus, and writing method 有权
公开(公告)号：EP2592483B1
公开(公告)日：2021-11-17
申请号：EP12184257.9
申请日：2012-09-13
发明人： Ishikawa, Naoichi , Iwasaki, Takeshi , Ogawa, Yuya , Komura, Taro
IPC分类号： G03G15/04 , G03G15/043

9. 发明公开

EP3889666A1 OPTICAL SCANNING UNIT AND ELECTRONIC IMAGING DEVICE 审中-实审
公开(公告)号：EP3889666A1
公开(公告)日：2021-10-06
申请号：EP19904955.2
申请日：2019-12-16
申请人： Zhuhai Pantum Electronics Co., Ltd.
发明人： NIE, Yongchao , WANG, Chao
IPC分类号： G02B26/10 , G02B26/12 , G03G15/04
摘要： The present disclosure provides a light scanning unit and an electronic image forming apparatus including the light scanning unit. The light scanning unit includes a light source, a first optical unit, an optical deflector, and a second optical unit. The light source includes at least two light-emitting points; the at least two light-emitting points are distributed along a straight line; and an angle between an extension direction of a distribution line thereof and a main scanning direction or a secondary scanning direction of the light scanning unit includes an acute angle, where the main scanning direction is perpendicular to the secondary scanning direction. The first optical unit is configured to collimate at least two light beams emitted from the light source along the main scanning direction and to focus the at least two light beams emitted from the light source along the secondary scanning direction.

10. 发明公开

EP3761118A1 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS 有权
公开(公告)号：EP3761118A1
公开(公告)日：2021-01-06
申请号：EP20179914.5
申请日：2020-06-15
申请人： Toshiba TEC Kabushiki Kaisha
发明人： KURIBAYASHI, Yasushi
IPC分类号： G03G15/04 , G03G15/043
摘要： An optical device includes a first light source emitting a first beam, a second light source emitting a second beam and arranged upstream in a scanning direction, a diaphragm including an opening passing portions of the first beam, the first portion having a first width from the light axis of the first beam on the upstream side, the second portion having a second width from the light axis on the downstream side, the first width narrower than the second width, and an opening passing portions of the second beam, the first portion having a third width from the light axis of the second beam on the upstream side, the second portion having a fourth width from the second light axis on the downstream side, the third width wider than the fourth width, and a deflector deflecting on a surface thereon the beams at positions shifted in a sub scanning direction.

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