公开(公告)号：US5043569A

公开(公告)日：1991-08-27

申请号：US470737

申请日：1990-01-26

申请人： Mitsunori Iima ,  Seiich Mori ,  Mikio Horie ,  Masatoshi Takano

发明人： Mitsunori Iima ,  Seiich Mori ,  Mikio Horie ,  Masatoshi Takano

IPC分类号： G06K7/10 ,  H04N1/029

CPC分类号： H04N1/029 ,  G06K7/10762

摘要： An optical system of a laser reader has a light projecting portion for emitting a laser beam of light converging toward an object, a condenser lens for condensing a reflecting light from the object and a light receiving element for detecting light quantity of the reflecting light condensed by the condenser lens. The optical axis of the light projecting portion and that of the condenser lens are substantially parallel within a readable range which is established by a relation between a spatial frequency of the object and a spot diameter of the laser beam of light. The laser emits infrared radiation and a light emitting diode emits a visible guide light to confirm the position of the infrared laser spot.

摘要翻译： 激光读取器的光学系统具有用于发射朝向物体会聚的光的激光束的光投射部，用于聚集来自物体的反射光的聚光透镜和用于检测由物体聚光的反射光的光量的光接收元件 聚光镜。 光投射部分和聚光透镜的光轴在通过物体的空间频率与激光束的光斑直径之间的关系建立的可读范围内基本平行。 激光发射红外辐射，发光二极管发出可见的引导光，以确认红外激光光斑的位置。

公开(公告)号：US5969347A

公开(公告)日：1999-10-19

申请号：US992812

申请日：1997-12-18

申请人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

发明人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

IPC分类号： B41J2/47 ,  G02B26/12 ,  G06K15/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/19 ,  H04N1/192 ,  H01J3/14

CPC分类号： G02B26/123 ,  B41J2/473 ,  G06K15/1204 ,  H04N1/0473 ,  H04N1/19 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/192 ,  H04N2201/0471 ,  H04N2201/04755

摘要： A cascade scanning optical system which includes: a first laser scanning optical system having a first polygon mirror, provided with a plurality of first reflecting surfaces, for deflecting a first scanning laser beam to scan a part of a scanning surface to generate a first scanning line; a second laser scanning optical system having a second polygon mirror, provided with a plurality of second reflecting surfaces, for deflecting a second scanning laser beam to scan another part of the scanning surface to generate a second scanning line, wherein the first and second laser scanning optical systems are arranged so as to align the first scanning line with the second scanning line at a point of contact therebetween in a main scanning direction to form a single scanning line; means for measuring a degree of tilt of each of the plurality of first reflecting surfaces and the plurality of second reflecting surfaces; and means for determining combinations of the plurality of first reflecting surfaces with the plurality of second reflecting surfaces in accordance with results of measurements of the measuring means so that the single scanning line is formed by any one of the combinations while minimizing a phase difference between a first phase formed by degrees of tilt of the plurality of first reflecting surfaces and a second phase formed by degrees of tilt of the plurality of the second reflecting surfaces.

摘要翻译： 一种级联扫描光学系统，其包括：第一激光扫描光学系统，具有设置有多个第一反射面的第一多面镜，用于偏转第一扫描激光束以扫描扫描表面的一部分以产生第一扫描线 ; 第二激光扫描光学系统，具有设置有多个第二反射表面的第二多面反射镜，用于偏转第二扫描激光束以扫描扫描表面的另一部分以产生第二扫描线，其中第一和第二激光扫描 光学系统布置成使得第一扫描线与第二扫描线在主扫描方向上的接触点处对准以形成单个扫描线; 用于测量所述多个第一反射表面和所述多个第二反射表面中的每一个的倾斜度的装置; 以及用于根据测量装置的测量结果确定多个第一反射表面与多个第二反射表面的组合的装置，使得单个扫描线由组合中的任何一个形成，同时最小化 所述第一相通过所述多个第一反射面的倾斜度和由所述多个所述第二反射面的倾斜度而形成的第二相形成。

公开(公告)号：US5828479A

公开(公告)日：1998-10-27

申请号：US929003

申请日：1997-09-04

申请人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

发明人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

IPC分类号： G02B26/10 ,  G02B13/00 ,  G02B13/18 ,  G02B26/12 ,  H04N1/113 ,  G02B26/08

CPC分类号： B41J2/473 ,  G02B26/12 ,  H04N1/1135

摘要： A cascade scanning optical system which includes: a pair of laser scanning optical systems each having a laser beam emitter and a laser beam deflector, wherein a laser beam emitted by the laser beam emitter enters the laser beam deflector so that the laser beam deflector deflects the laser beam to scan a surface of a member such that the laser beams proceed to the surface on a common line thereon in respective ranges of the common line; a pair of mirrors respectively provided in the pair of laser scanning optical systems, each of the pair of mirrors being positioned in a corresponding optical path between the laser beam deflector and the member to reflect a laser beam incident thereon toward the surface; a pair of cylindrical lenses having power in a sub-scanning direction, respectively provided in the pair of laser scanning optical systems, each of the pair of cylindrical lenses being positioned in a corresponding optical path between the laser beam emitter and the laser beam deflector; first means for adjusting an angle of at least one of the pair of mirrors relative to the surface; and second means for adjusting a position of at least one of the pair of cylindrical lenses relative to a corresponding one of the laser beam deflectors.

摘要翻译： 一种级联扫描光学系统，其包括：一对激光扫描光学系统，每个具有激光束发射器和激光束偏转器，其中由激光束发射器发射的激光束进入激光束偏转器，使得激光束偏转器偏转 激光束扫描构件的表面，使得激光束在公共线的相应范围内前进到其上的公共线上的表面; 分别设置在一对激光扫描光学系统中的一对反射镜，每对反射镜位于激光束偏转器和构件之间的相应光路中，以反射入射到其上的激光束; 分别设置在该对激光扫描光学系统中的副副扫描方向上具有动力的一对柱面透镜，所述一对柱面透镜中的每一个位于激光束发射器和激光束偏转器之间的相应光路中; 用于调整所述一对反射镜中的至少一个相对于所述表面的角度的第一装置; 以及用于相对于相应的一个激光束偏转器来调节所述一对柱面透镜中的至少一个的位置的第二装置。

公开(公告)号：US5903377A

公开(公告)日：1999-05-11

申请号：US1559

申请日：1997-12-31

申请人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

发明人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/19 ,  H04N1/192 ,  G02B26/08

CPC分类号： H04N1/053 ,  G02B26/12 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/19 ,  H04N1/192 ,  H04N2201/0471 ,  H04N2201/04786

摘要： Disclosed is a scanning apparatus having a cascade scanning optical system. The scanning apparatus includes: a first scanning optical system for deflecting a first scanning laser beam to scan a scanning surface; a second scanning optical system for deflecting a second scanning laser beam to scan the scanning surface, wherein each of the first and second scanning optical systems is a telecentric system; a beam splitter positioned such that a first portion of the first scanning laser beam which has been reflected by the beam splitter and a first portion of the second scanning laser beam which has passed through the beam splitter proceed to the scanning surface on a common line thereon extending in a main scanning direction in respective different adjacent ranges of the common line to generate a single scanning line on the scanning surface by a combination of the first portion of the first scanning laser beam and the first portion of the second scanning laser beam; and a first laser beam detector fixed at a position to detect a second portion of the first scanning laser beam which has passed through the beam splitter and a second portion of the second scanning laser beam which has been reflected by the beam splitter when the first and second laser beams start scanning the respective different adjacent rang of the common line.

摘要翻译： 公开了一种具有级联扫描光学系统的扫描装置。 扫描装置包括：第一扫描光学系统，用于偏转第一扫描激光束以扫描扫描表面; 用于偏转第二扫描激光束扫描扫描表面的第二扫描光学系统，其中第一和第二扫描光学系统中的每一个是远心系统; 分束器，其被定位成使得已经被分束器反射的第一扫描激光束的第一部分和已经通过分束器的第二扫描激光束的第一部分在其上的公共线上前进到扫描表面 在公共线的各个不同相邻范围内沿主扫描方向延伸，通过第一扫描激光束的第一部分和第二扫描激光束的第一部分的组合在扫描表面上产生单个扫描线; 以及第一激光束检测器，其固定在检测已经通过所述分束器的所述第一扫描激光束的第二部分和所述第二扫描激光束的第二部分的位置，所述第二扫描激光束当所述第一和第二扫描激光束被所述第一和第二扫描激光束反射时， 第二激光束开始扫描公共线的各个不同相邻的范围。

公开(公告)号：US5867299A

公开(公告)日：1999-02-02

申请号：US917475

申请日：1997-08-26

申请人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

发明人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  H04N1/113 ,  H04N1/12 ,  H04N1/192 ,  G02B26/08

CPC分类号： G02B26/12 ,  H04N1/192 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0426 ,  H04N2201/04729

摘要： A cascade scanning optical system which includes a plurality of laser scanning optical systems each emitting a laser beam to scan a surface of a member, and a beam splitter positioned in an optical path between the plurality of laser scanning optical systems and the member such that a first laser beam which has passed through the beam splitter and a second laser beam which has been reflected by the beam splitter proceed to the surface on a common line thereon in respective ranges of the common line. Each of the plurality of laser scanning optical systems is desinged as a telecentric system.

摘要翻译： 一种级联扫描光学系统，其包括多个激光扫描光学系统，每个激光扫描光学系统发射激光束以扫描部件的表面;以及分束器，其位于所述多个激光扫描光学系统和所述部件之间的光路中，使得 已经通过分束器的第一激光束和被分束器反射的第二激光束在公共线的相应范围内前进到公共线上的表面。 多个激光扫描光学系统中的每一个被设计为远心系统。

公开(公告)号：US5909300A

公开(公告)日：1999-06-01

申请号：US1560

申请日：1997-12-31

申请人： Yoshiyuki Araki ,  Masatoshi Takano ,  Shinji Kikuchi ,  Tsutomu Sato ,  Eiji Takasugi ,  Takashi Sasaki ,  Mitsunori Iima ,  Takashi Iizuka

发明人： Yoshiyuki Araki ,  Masatoshi Takano ,  Shinji Kikuchi ,  Tsutomu Sato ,  Eiji Takasugi ,  Takashi Sasaki ,  Mitsunori Iima ,  Takashi Iizuka

IPC分类号： G02B26/12 ,  H04N1/113 ,  G02B26/08

CPC分类号： H04N1/1135 ,  G02B26/12

摘要： Disclosed is a scanning apparatus having a cascade scanning optical system. The scanning apparatus includes: a first laser scanning optical system for deflecting a first scanning laser beam to scan a scanning surface to generate a first scanning line; a second laser scanning optical system for deflecting a second scanning laser beam to scan the scanning surface to generate a second scanning line, wherein the first and second laser scanning optical systems are arranged so as to align the first scanning line with the second scanning line in a main scanning direction to form a single scanning line, with opposing ends of the first and second scanning lines overlapping each other by a predetermined amount; and a device for delaying the commencement of the writing of each scanning line made by the second laser scanning optical system with respect to the commencement of the writing of each scanning line made by the first laser scanning optical system so as to align the first scanning line with the second scanning line at a point of contact therebetween in the main scanning direction without the first scanning line overlapping the second scanning line.

摘要翻译： 公开了一种具有级联扫描光学系统的扫描装置。 扫描装置包括：第一激光扫描光学系统，用于偏转第一扫描激光束扫描扫描表面以产生第一扫描线; 第二激光扫描光学系统，用于偏转第二扫描激光束以扫描扫描表面以产生第二扫描线，其中所述第一和第二激光扫描光学系统被布置为将所述第一扫描线与所述第二扫描线对准 形成单扫描线的主扫描方向，第一扫描线和第二扫描线的相对端彼此重叠预定量; 以及用于延迟由第二激光扫描光学系统对由第一激光扫描光学系统制成的每条扫描线的写入的开始而开始写入每条扫描线的装置，以使第一扫描线对准 其中第二扫描线在主扫描方向上的接触点处，而第一扫描线不与第二扫描线重叠。

公开(公告)号：US5903378A

公开(公告)日：1999-05-11

申请号：US001561

申请日：1997-12-31

申请人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

发明人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/192 ,  G02B26/08

CPC分类号： H04N1/053 ,  G02B26/12 ,  H04N1/1135 ,  H04N1/192 ,  H04N2201/0471 ,  H04N2201/04786

摘要： Disclosed is a scanning apparatus having a cascade scanning optical system. The scanning apparatus includes: a first laser scanning optical system for deflecting a first scanning laser beam to scan a scanning surface to generate a first scanning line during modulation of the first scanning laser beam in accordance with first given image data; a second laser scanning optical system for deflecting a second scanning laser beam to scan the scanning surface to generate a second scanning line during modulation of the second scanning laser beam in accordance with second given image data, wherein the first and second laser scanning optical systems are arranged so as to align the first scanning line with the second scanning line at a point of contact therebetween in a main scanning direction to form a single scanning line; a first laser beam detector fixed at a position to detect the first scanning laser beam before the first scanning laser beam starts generating the first scanning line; a second laser beam detector fixed at a position to detect the first scanning laser beam after the first scanning laser beam has completed generating the first scanning line; a measuring device for measuring a time interval; a determining device for determining a time-delay interval; and an adjusting device for adjusting the time at which the first scanning line starts to be generated, in accordance with the time-delay interval.

摘要翻译： 公开了一种具有级联扫描光学系统的扫描装置。 扫描装置包括：第一激光扫描光学系统，用于根据第一给定图像数据偏转第一扫描激光束扫描扫描表面以在第一扫描激光束的调制期间产生第一扫描线; 第二激光扫描光学系统，用于根据第二给定图像数据偏转第二扫描激光束扫描扫描表面以在第二扫描激光束的调制期间产生第二扫描线，其中第一和第二激光扫描光学系统是 排列成使得第一扫描线与第二扫描线在主扫描方向上的接触点处对准，以形成单条扫描线; 第一激光束检测器，固定在第一扫描激光束开始产生第一扫描线之前检测第一扫描激光束的位置; 第二激光束检测器，固定在第一扫描激光束完成后检测第一扫描激光束的位置，产生第一扫描线; 用于测量时间间隔的测量装置; 用于确定时间延迟间隔的确定装置; 以及调整装置，用于根据时间延迟间隔来调整开始生成第一扫描线的时间。

公开(公告)号：US5825522A

公开(公告)日：1998-10-20

申请号：US921466

申请日：1997-09-02

申请人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

发明人： Masatoshi Takano ,  Eiji Takasugi ,  Shinji Kikuchi ,  Tsutomu Sato ,  Hiroyuki Saito ,  Yoshiyuki Araki ,  Mitsunori Iima ,  Takashi Sasaki ,  Takashi Iizuka

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  H04N1/113 ,  G02B26/08

CPC分类号： H04N1/1135 ,  G02B26/12

摘要： A cascade scanning optical system which includes a first laser scanning optical system for emitting a first laser beam to scan a surface of a member to generate a first scanning line, and a second laser scanning optical system for emitting a second laser beam to scan the surface to generate a second scanning line, wherein the first and second laser scanning optical systems are arranged so as to combine the first scanning line with the second scanning line at a point of contact therebetween in a main scanning direction to form a single scanning line, and wherein each of the first and second laser scanning optical systems is designed as a non-telecentric system through which the incident angle of a corresponding one of the first and second laser beams relative to the surface varies in accordance with a variation in the position of a scanning spot of the corresponding one of the first and second laser beams on the surface in the main scanning direction, and further wherein an incident angle of each of the first and second laser beams relative to the surface in the vicinity of the point of contact is predetermined to be larger than an incident angle of the same in the vicinity of a corresponding one of opposite ends of the single scanning line.

摘要翻译： 一种级联扫描光学系统，包括：第一激光扫描光学系统，用于发射第一激光束以扫描部件的表面以产生第一扫描线;以及第二激光扫描光学系统，用于发射第二激光束以扫描所述表面 以产生第二扫描线，其中第一和第二激光扫描光学系统布置成在主扫描方向上在其接触点处组合第一扫描线和第二扫描线以形成单个扫描线，并且 其中所述第一和第二激光扫描光学系统中的每一个被设计为非远心系统，通过所述非远心系统，所述第一和第二激光束中的相应一个激光束相对于所述表面的入射角度根据所述第一和第二激光扫描光学系统的位置的变化而变化 在主扫描方向的表面上的第一和第二激光束中的相应一个的扫描光点，并且其中， 第一和第二激光束中的每一个相对于接触点附近的表面的距离被预定为大于在单个扫描线的相应一个相对端附近的入射角。

公开(公告)号：US5528352A

公开(公告)日：1996-06-18

申请号：US400020

申请日：1995-03-06

申请人： Kazuhiro Ichinokawa ,  Kenichiro Otsuka ,  Satoshi Hokamura ,  Eiichi Ito ,  Takaaki Yano ,  Masatoshi Takano ,  Masakazu Hirano ,  Motohiro Maseki ,  Tatsuya Yoshida ,  Mikio Horie ,  Masami Shirai

发明人： Kazuhiro Ichinokawa ,  Kenichiro Otsuka ,  Satoshi Hokamura ,  Eiichi Ito ,  Takaaki Yano ,  Masatoshi Takano ,  Masakazu Hirano ,  Motohiro Maseki ,  Tatsuya Yoshida ,  Mikio Horie ,  Masami Shirai

IPC分类号： B65H3/52 ,  B65H5/38 ,  B65H9/10 ,  G03G15/00 ,  G03G15/20 ,  G03G21/00

CPC分类号： B65H3/5223 ,  B65H5/38 ,  B65H9/106 ,  G03G15/2003 ,  G03G15/60 ,  G03G15/6564 ,  G03G2215/00561 ,  G03G2215/00599

摘要： An electrophotographic apparatus is provided with an original separation mechanism which is disposed on a lower side of the inlet port of a feeding path. The original separation mechanism is pressed to an original pick-up roller, and is provided for separating one original, which contacts the original pick-up roller, from at least one following original. The original separation mechanism includes a unit body, and a friction member attached to the upper surface of a unit body, extending toward a downstream side of the feeding direction of the original so as to intersect the feed path at a predetermined angle, and having an upper surface with a prescribed friction coefficient. The original separation mechanism further includes a pair of supporting members attached to both sides of the unit body with respect to the friction member, and each formed of a spring material having an upper surface which extends so as to intersect the upper surface of the lower original guide member at a predetermined angle. Each of the supporting members intersects the friction member at the distal end thereof.

摘要翻译： 电子照相设备设置有原始分离机构，其设置在馈送路径的入口的下侧。 原始分离机构被压到原始拾取辊上，并且被设置用于将与原始拾取辊接触的一个原稿从至少一个以下原稿分离。 原始的分离机构包括：单元主体和安装在单元主体的上表面的摩擦构件，朝向原稿的进给方向的下游侧延伸，以与预定角度相交的进给路径， 上表面具有规定的摩擦系数。 原始分离机构还包括一对支撑构件，其相对于摩擦构件附接到单元主体的两侧，并且每个支撑构件由弹簧材料形成，弹簧材料具有与下部原件的上表面相交的上表面 引导构件以预定角度。 每个支撑构件在其远端处与摩擦构件相交。

公开(公告)号：US5452072A

公开(公告)日：1995-09-19

申请号：US253195

申请日：1994-06-02

申请人： Kazuhiro Ichinokawa ,  Kenichiro Otsuka ,  Takaaki Yano ,  Masatoshi Takano ,  Satoshi Hokamura ,  Masakazu Hirano ,  Motohiro Maseki ,  Tatsuya Yoshida ,  Mikio Horie ,  Masami Shirai ,  Eiichi Ito

发明人： Kazuhiro Ichinokawa ,  Kenichiro Otsuka ,  Takaaki Yano ,  Masatoshi Takano ,  Satoshi Hokamura ,  Masakazu Hirano ,  Motohiro Maseki ,  Tatsuya Yoshida ,  Mikio Horie ,  Masami Shirai ,  Eiichi Ito

IPC分类号： B65H3/52 ,  B65H5/38 ,  B65H9/10 ,  G03G15/00 ,  G03G15/16 ,  G03G15/20 ,  G03G21/16 ,  G03G15/14

CPC分类号： B65H3/5223 ,  B65H5/38 ,  B65H9/106 ,  G03G15/1635 ,  G03G15/2003 ,  G03G15/6564 ,  G03G21/1628 ,  G03G2215/00561 ,  G03G2215/00599 ,  G03G2221/1687 ,  G03G2221/169

摘要： An electrophotographic apparatus is provided with a photoconductive drum including an outer peripheral surface on which a latent image corresponding to an image to be transferred is formed, and a developing device for developing the latent image by a toner. The electrophotographic apparatus further includes a housing for rotatably supporting the photoconductive drum therein and having an opening on one side, a cover member for releasably closing the opening of the housing, and a transfer charger which is attached to one surface of the cover member opposing to the photoconductive drum, and which is provided for transferring the developed image onto a sheet-like member. A pre-roller is attached to an upstream end of a housing which houses the transfer charger. The pre-roller and the photoconductive drum are positioned relative to each other so that a gap of predetermined dimension is defined therebetween.

摘要翻译： 电子照相设备设置有感光鼓，该感光鼓包括其上形成有与要转印的图像相对应的潜像的外周表面，以及用调色剂使潜像显影的显影装置。 电子照相设备还包括一个外壳，用于将感光鼓可旋转地支撑在其中，并且在一侧具有开口，用于可释放地封闭壳体的开口的盖构件和附接到盖构件的与其相对的一个表面的转印充电器 感光鼓，其被设置用于将显影图像转印到片状构件上。 预辊被安装在容纳转印充电器的壳体的上游端。 预辊和感光鼓相对于彼此定位，使得在其间限定预定尺寸的间隙。