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11. 发明专利

JP2002079703A OPTICAL PRINTING HEAD AND IMAGING APPARATUS 失效
公开(公告)号：JP2002079703A
公开(公告)日：2002-03-19
申请号：JP2000273045
申请日：2000-09-08
申请人： RICOH KK
发明人： FUJITA KAZUHIRO , KANEMATSU TOSHIHIRO , INADA HISASHI , MASUDA KOJI , TAKAI MASAAKI , YOSHIMURA KENICHI , KINOSHITA MASAYUKI , OSUGI TOMOYA
IPC分类号： B41J2/44 , B41J2/45 , B41J2/455
摘要： PROBLEM TO BE SOLVED: To correct deformation such as bowing, deflection or the like of a minute light-emitting segment array by an array supporting member having a simple constitution. SOLUTION: The light-emitting segment array 16 is supported by the highly rigid array supporting member 17, whereby the bowing or the like even if generated to the minute light-emitting segment array 16 is corrected by the array supporting member 17. Since the array supporting member 17 is formed independently of a frame member 18 where the other optical parts are mounted, the array supporting member 17 can be manufactured highly accurately and easily. Moreover, since the minute light-emitting segment array 16 is assembled integrally with the array supporting member 17, it is made possible to handle the minute light-emitting segment array 16 separately from the other parts supported to the frame member 18, which is advantageous in terms of recycling because costs in replacing the minute light-emitting segment array 16 are reduced.

12. 发明专利

JP2000267037A OPTICAL SCANNER 失效
公开(公告)号：JP2000267037A
公开(公告)日：2000-09-29
申请号：JP7219199
申请日：1999-03-17
申请人： RICOH KK
发明人： OSUGI TOMOYA
IPC分类号： H04N1/113 , B41J2/44 , G02B26/10 , G02B26/12
摘要： PROBLEM TO BE SOLVED: To reduce the heat generation of the whole of an optical box with an inexpensive configuration. SOLUTION: A flow passage 44 closed so as to make a round of the outside circumference of a housing 21a is formed of the outside wall 37, the bottom wall and the inside wall 38 of the housing 21a, a transmission glass 14 and an upper cover. In order to extend surface area by making the passage 44 longer than the outside circumference, ribs 37a and 38a are respectively formed at one part sides of the walls 37 and 38 so as to form one part 44a of the passage 44 like a crank. Besides, a rotary polygon mirror and the driving part thereof are arranged in the passage 44 and other optical elements are arranged outside the passage 44. Then, an air flow produced by the rotation of the rotary polygon mirror is endlessly circulated along the inside of the passage 44, that means, along the outside circumference of the housing 21a.

13. 发明专利

JP2000227541A MIRROR SUPPORT STRUCTURE FOR IMAGE FORMING DEVICE 失效
公开(公告)号：JP2000227541A
公开(公告)日：2000-08-15
申请号：JP2813899
申请日：1999-02-05
申请人： RICOH KK
发明人： OSUGI TOMOYA , KUBO NOBUAKI
IPC分类号： G02B7/198
摘要： PROBLEM TO BE SOLVED: To provide a mirror support structure for image forming device by which a mirror can surely be supported and fixed so that the reflected light of light made incident on the mirror is not deviated from the aimed image- forming position even when vibration is generated in a drive system, etc., in the vicinity of a mirror. SOLUTION: In a lower mirror surface 11b almost perpendicular to a reflecting surface 11a for reflecting the light from a mirror 11, two areas (a) and (b) in its longitudinal direction are made into roughened surface 11c and 11d rougher than other parts of a mirror edge surface 11a, and the roughened surface 11e and 11d are held from below by supporting member 13 and 14. Thus, large fictional force is generated between the surface 11c (11d) of the mirror 11 and the supporting member 13 (14) to reduce the vibration of the mirror 11.

14. 发明专利

JP2006350251A OPTICAL SCANNER, AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：JP2006350251A
公开(公告)日：2006-12-28
申请号：JP2005179828
申请日：2005-06-20
申请人： RICOH KK
发明人： HAYASHI YOSHIAKI , OSUGI TOMOYA , SAISHO KENICHIRO , NAOE YASUHIRO , OKUWAKI HIROYUKI , HIRAI RYOJI
IPC分类号： G02B26/10 , B41J2/44 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive optical scanner in which adjustment is easily performed, beam spot diameter is reduced, and the deviation of beam spot position is reduced. SOLUTION: A cylindrical lens 21 as an optical element is mounted in a housing 33 via an intermediate member 32. The cylindrical lens 21 is adjustable with respect to the intermediate member 32 in the position in a subscanning direction and in the eccentricity around an axis which is parallel to an optical axis, and the intermediate member 32 is adjustable with respect to the housing 33 in the position in the optical axis direction and in the eccentricity around an axis which is parallel to the subscanning direction. The cylindrical lens 21 is held with an unillustrated jig and the position of the cylindrical lens is adjusted, the intermediate member 32 is abutted to the cylindrical lens 21 and the housing, and faces 36 on which an adhesive is applied are irradiated with ultraviolet ray to be cured. COPYRIGHT: (C)2007,JPO&INPIT

15. 发明专利

JP2001353901A APPARATUS AND METHOD FOR IMAGING 失效
公开(公告)号：JP2001353901A
公开(公告)日：2001-12-25
申请号：JP2000179924
申请日：2000-06-15
申请人： RICOH KK
发明人： ITO MASAHIRO , SHIMADA KAZUYUKI , MASUDA KOJI , OSUGI TOMOYA
IPC分类号： B41J2/44 , B41J2/45 , B41J2/455 , G03G15/01 , G03G15/04 , H04N1/036 , H04N1/29 , H04N1/46
摘要： PROBLEM TO BE SOLVED: To obtain an apparatus and method for imaging in which high speed image processing is realized in monochromatic mode without increasing the data transfer rate or shortening the exposing time. SOLUTION: The imaging apparatus comprises a plurality of planes 3C, 3M, 3Y and 3K being irradiated, and a plurality of optical print heads 16C, 16M, 16Y and 16K provided in correspondence with respective planes being irradiated. Each optical print head comprises at least one light emitting element array 20C, 20M, 20Y, 20KA and 20KB and the number of light emitting element arrays of a specified optical print head 16K among the plurality of optical print heads is set higher than that of other optical print head. At the time of multicolor mode, use conditions are equalized for the specified optical print head 16K and other optical print head. At the time of monochromatic mode, the specified optical print head 16K having a larger number of light emitting element arrays is used.

16. 发明专利

JP2001225506A OPTICAL PRINT HEAD AND IMAGING APPARATUS COMPRISING IT 失效
公开(公告)号：JP2001225506A
公开(公告)日：2001-08-21
申请号：JP2000040685
申请日：2000-02-18
申请人： RICOH KK
发明人： OSUGI TOMOYA
IPC分类号： H04N1/036 , B41J2/44 , B41J2/45 , B41J2/455
摘要： PROBLEM TO BE SOLVED: To reduce the effect of heat generation on the optical performance and to keep the position of a light emitting array and a focus element in the direction of optical axis with high a accuracy by absorbing heat generated from the light emitting array and a drive element efficiently. SOLUTION: The optical print head 11 comprises a substrate 2 mounting a light emitting array 3 and an element 4 for driving it, a focus element 8, and a support 13 for supporting the substrate 2 and the focus element 8 by forming a space 12 between them. Since a heat absorbing member 14 having high thermal conductivity is interposer between the driving element 4 and the focus element support 13 on the substrate while touching them, heat generated from the driving element 4 is absorbed efficiently through the heat absorbing member 14, and the effect of heat generation of the driving element 4 on the optical performance is reduced. It can be realized at a low cost through a simple arrangement.

17. 发明专利

JP2000258709A MULTIBEAM SCANNER 失效
公开(公告)号：JP2000258709A
公开(公告)日：2000-09-22
申请号：JP5942199
申请日：1999-03-05
申请人： RICOH KK
发明人： KOJIMA AKIRA , AOKI MASAKANE , KUBO NOBUAKI , ITABASHI AKIHISA , SUHARA HIROYUKI , OSUGI TOMOYA
IPC分类号： B41J2/44 , G02B26/10
摘要： PROBLEM TO BE SOLVED: To make an image forming device continue image forming operation by a light source performing normal light emitting operation even when an abnormal situation that the normal light emitting operation can not be executed occurs in a part of plural light sources. SOLUTION: In this multibeam scanner, laser beams from 1st and 2nd laser diodes 7 and 8 optically modulated by an original image data are adjacently disposed in a subscanning direction and made incident on a photoreceptor 16. The electrostatic latent image of the original image is formed on the photoreceptor 16 by two scanning lines simultaneously in a main scanning direction. When high speed image-forming is performed and the light emitting level of either diodes 7 or 8 gets low, the moving speed of the photoreceptor 16 in the subscanning direction is decreased to 1/2 of ordinary speed or write-in density on the photoreceptor 16 is decreased to 1/2 of ordinary density. Thus, the image of the original is formed in a state where image forming time is set to twice as long as ordinary time with the ordinary write-in density or in a state where the image write-in density is set to 1/2 in ordinary image forming time until a service engineer arrives to make repairs.

18. 发明专利

JPH1152275A OPTICAL SCANNER 失效
公开(公告)号：JPH1152275A
公开(公告)日：1999-02-26
申请号：JP21486497
申请日：1997-08-08
申请人： RICOH KK
发明人： OSUGI TOMOYA
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12 , G03G21/20 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To restrain temperature rise around a rotary polygon mirror housed in a plastic optical box with inexpensive constitution. SOLUTION: The rotary polygon mirror 3 and a driving device 4 for driving the mirror 3 are housed in the plastic optical box 1, and the upper opening part of the optical box 1 is covered with a cover 2 so as to make the optical box 1 in an almost tight closure state. A metallic plate 5 functioning as a member whose heat conductivity is high is grounded on the lower surface of the driving substrate 15 of the device 4, and the trailing end side 5b of the plate 5 is drawn out to the outside while maintaining the almost tight closure state of the optical box 1.

19. 发明专利

JPH10307273A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH10307273A
公开(公告)日：1998-11-17
申请号：JP13287097
申请日：1997-05-07
申请人： RICOH KK
发明人： OSUGI TOMOYA
IPC分类号： B41J2/44 , G02B26/10 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an image forming device using a reflection element whose reflectance is high without requiring aluminum vapar deposition or coating and without causing the cost rising of a mirror. SOLUTION: In this image forming device using a laser beam source emitting a laser beam and a write-in optical system 10 forming the laser beam into an image; assuming that the refractive index of a reflection surface 1a with respect to the wavelength of incident light is N1 and the refractive index of substance adjacent to the reflection surface 1a is N2, the reflection element 1 arranged so that the laser beam may be made incident at an incident angle equal to or above a critical angle θ at which incident light is totally reflected on the reflection surface 1a and having reflection surface 1a being a smooth surface where surface processing by vapor deposition is not performed is arranged between the laser light source and a photoreceptor drum 15. The reflection element equipped with the incident surface perpendicular to the incident light and an emitting surface perpendicular to the light reflected on the reflection surface of the reflection element and emitted from the reflection element is arranged between the laser light source and the drum 15. Furthermore, plastic or float glass is used as the material of the reflection element.

20. 发明专利

JP2002268308A IMAGING DEVICE 失效
公开(公告)号：JP2002268308A
公开(公告)日：2002-09-18
申请号：JP2001067599
申请日：2001-03-09
申请人： RICOH KK
发明人： OSUGI TOMOYA , SHIMADA KAZUYUKI , SAITO TETSUO , MASUDA KOJI , SUZUKI HIROKATSU , ITO MASAHIRO
IPC分类号： B41J2/44 , B41J2/45 , B41J2/455 , G03G15/00 , G03G15/01 , G03G15/04 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To realize not only space saving around a photoreceptor but also miniaturization of an imaging device by efficiently arranging a solid-state optical writing device and a potential sensor, while preventing the deterioration of image quality caused by environmental change and changes due to aging or the like by using the potential sensor. SOLUTION: This imaging device is equipped with the photoreceptor (1), the optical writing device (3) on which a light-emitting element array (3b) is mounted on a base plate (3c) and a developing machine (5), and also equipped with the potential sensor (4) detecting the surface potential of the photoreceptor between an optical writing position (3f) and a developing position (5f) on the surface of the photoreceptor. The device is constituted such that the sensor (4) is held integrally by the device (3).

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