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21. 发明专利

DE69232124D1 未知
公开(公告)号：DE69232124D1
公开(公告)日：2001-11-15
申请号：DE69232124
申请日：1992-05-14
申请人： SEIKO EPSON CORP
发明人： INOUE NOZOMU , TAKADA KYU , KURIHARA HAJIME , KOGA YOSHIRO
IPC分类号： B41J2/47 , G02B26/12 , G06K15/12 , H04N1/113 , H04N1/12 , H04N1/19 , H04N1/191 , H04N1/195
摘要： A laser beam scanning unit (53) adapted for scanning laser beams on a surface of a charged image bearing member (5) is provided. The laser beam scanning apparatus (53) comprises a semiconductor laser array (21) having a plurality of light emitting portions (21a) and a rotating polygon mirror (3) adapted for deflecting laser beams emitted from the light emitting portions to the image bearing member (5). The light emitting portions (21a) are disposed two-dimensionally on a surface of the semiconductor laser array. The lighting and the amount of light of the light emitting portions (21a) are discretely controlled by a control unit (60).

22. 发明专利

DE69212285T2 未知
公开(公告)号：DE69212285T2
公开(公告)日：1997-02-06
申请号：DE69212285
申请日：1992-05-14
申请人： SEIKO EPSON CORP
发明人： INOUE NOZOMU , TAKADA KYU , KURIHARA HAJIME , KOGA YOSHIRO
IPC分类号： B41J2/47 , G02B26/12 , G06K15/12 , H04N1/113 , H04N1/12 , H04N1/19 , H04N1/191 , H04N1/195 , G03G15/04 , H01S3/18 , H04N1/04
摘要： A laser beam scanning unit (53) adapted for scanning laser beams on a surface of a charged image bearing member (5) is provided. The laser beam scanning apparatus (53) comprises a semiconductor laser array (21) having a plurality of light emitting portions (21a) and a rotating polygon mirror (3) adapted for deflecting laser beams emitted from the light emitting portions to the image bearing member (5). The light emitting portions (21a) are disposed two-dimensionally on a surface of the semiconductor laser array. The lighting and the amount of light of the light emitting portions (21a) are discretely controlled by a control unit (60).

23. 发明专利

GB2287361B Charger apparatus 未知
公开(公告)号：GB2287361B
公开(公告)日：1997-01-15
申请号：GB9510470
申请日：1994-03-17
申请人： SEIKO EPSON CORP
发明人： OKAMURA TAKEHIKO , HAMA TAKASHI , YOSHIOKA KENJIROU , SHIMURA HIDETSUGU , KURIHARA HAJIME , IKEGAMI AKIHIKO
IPC分类号： G03G15/02 , H01T19/00

24. 发明专利

GB2287360B Charger apparatus 未知
公开(公告)号：GB2287360B
公开(公告)日：1997-01-15
申请号：GB9510469
申请日：1994-03-17
申请人： SEIKO EPSON CORP
发明人： OKAMURA TAKEHIKO , HAMA TAKASHI , YOSHIOKA KENJIROU , SHIMURA HIDETSUGU , KURIHARA HAJIME , IKEGAMI AKIHIKO
IPC分类号： G03G15/02 , H01T19/00

25. 发明专利

FR2697926B1 未知
公开(公告)号：FR2697926B1
公开(公告)日：1996-04-12
申请号：FR9313176
申请日：1993-11-05
申请人： SEIKO EPSON CORP
发明人： SHIMURA HIDETSUGU , KURIHARA HAJIME , IKEGAMI AKIHIKO , TANAKA HIROSHI , YOSHIOKA KENJIROU
IPC分类号： B41J2/385 , G03G15/00 , G03G15/02 , G03G15/16
摘要： A contact charge supply device for externally controlling the charges, which are supplied to a member to be charged by bringing a contact member appled with an external voltage into contact with the member to be charged, which at least includes an underlayer, and holds the following inequality log (R)>/=log {Rpx(Va-Vt)/Vt}+( alpha - beta )xlog(S/s)+ gamma xlog (i/I) where |Va|>/=|Vt|, Va (V): voltage applied to a contact member in contact with the member to be charged; I ( mu A): current flowing from the contact member to the member to be charged; S (cm2): contact area of the member to be charged and the contact member; R ( OMEGA ): resistance of the contact member when current I ( mu A) is fed to an area corresponding to the contact area S (cm2) of the contact member; gamma : current dependency of the resistance of the contact member; 1- beta : area dependency of the resistance of the contact member; s (cm2): area of a defective part of the member to be charged; Vt (V): breakdown voltage of the underlayer; i ( mu A): current flowing into an area of the underlayer corresponding to the contact area S (cm2) when a voltage, slightly lower than the breakdown voltage Vt (V), is applied to that area; Rp ( OMEGA ): resistance of the underlayer when the current i ( mu A) flows into the area of the underlayer corresponding to the contact area S (cm2) when a voltage, slightly lower than the breakdown voltage Vt (V), is applied to that area; 1- alpha : area dependency of the resistance of the underlayer.

26. 发明专利

GB2287362A Charger apparatus eg for image forming apparatus 未知
公开(公告)号：GB2287362A
公开(公告)日：1995-09-13
申请号：GB9510471
申请日：1994-03-17
申请人： SEIKO EPSON CORP
发明人： OKAMURA TAKEHIKO , HAMA TAKASHI , YOSHIOKA KENJIROU , SHIMURA HIDETSUGU , KURIHARA HAJIME , IKEGAMI AKIHIKO
IPC分类号： G03G15/02 , H01T19/00

27. 发明专利

DE69014023D1 未知
公开(公告)号：DE69014023D1
公开(公告)日：1994-12-15
申请号：DE69014023
申请日：1990-08-29
申请人： SEIKO EPSON CORP
发明人： SHIMURA EIJI , KURIHARA HAJIME
IPC分类号： B41J31/14

28. 发明专利

DE4337876A1 Contact charge supply device e.g. for printer, video printer, facsimile, copier, or display 未知
公开(公告)号：DE4337876A1
公开(公告)日：1994-06-09
申请号：DE4337876
申请日：1993-11-05
申请人： SEIKO EPSON CORP
发明人： SHIMURA HIDETSUGU , KURIHARA HAJIME , IKEGAMI AKIHIKO , TANAKA HIROSHI , YOSHIOKA KENJIROU
IPC分类号： G03G15/02 , G03G15/16 , H01T19/00
摘要： The contact charge supply device includes a contact member which contacts to the member to be charged and to which a voltage is applied. The contact member may be the charging member, transfer member, contact type developing member, contact type cleaning member and a member for disordering a developer remaining on the member to be charged. Where the contact member satisfies the given formula, the device would not suffer from problems in image defect or any deterioration of the contact member even though the member to be charged has a defect or pinhole. The device prevents an overcurrent being fed from the contact member concentrically to the defective part of the photoreceptor layer if the latter suffers from a defect.

29. 发明专利

GB2272581A Contact charge supply device 未知
公开(公告)号：GB2272581A
公开(公告)日：1994-05-18
申请号：GB9322758
申请日：1993-11-04
申请人： SEIKO EPSON CORP
发明人： SHIMURA HIDETSUGU , KURIHARA HAJIME , IKEGAMI AKIHIKO , TANAKA HIROSHI , YOSHIOKA KENJIROU
IPC分类号： B41J2/385 , G03G15/00 , G03G15/02 , G03G15/16 , H01T19/02
摘要： In charging an electrophotographic medium that has defects such as pinholes or foreign material the charging device is such as to satisfy one of three inequalities that relate a number of parameters including the area of a defective part of the medium to be charged.

30. 发明专利

DE69233409D1 未知
公开(公告)号：DE69233409D1
公开(公告)日：2004-10-14
申请号：DE69233409
申请日：1992-05-14
申请人： SEIKO EPSON CORP
发明人： INOUE NOZOMU , KURIHARA HAJIME , TAKADA KYU , KOGA YOSHIRO
IPC分类号： B41J2/47 , G02B26/12 , G06K15/12 , H04N1/113 , H04N1/12 , H04N1/19 , H04N1/191 , H04N1/195
摘要： A laser beam scanning unit (53) adapted for scanning laser beams on a surface of a charged image bearing member (5) is provided. The laser beam scanning apparatus (53) comprises a semiconductor laser array (21) having a plurality of light emitting portions (21a) and a rotating polygon mirror (3) adapted for deflecting laser beams emitted from the light emitting portions to the image bearing member (5). The light emitting portions (21a) are disposed two-dimensionally on a surface of the semiconductor laser array. The lighting and the amount of light of the light emitting portions (21a) are discretely controlled by a control unit (60).

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