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71. 发明授权

US5151910A Light quantity control device 失效
标题翻译：光数量控制装置
公开(公告)号：US5151910A
公开(公告)日：1992-09-29
申请号：US588331
申请日：1990-09-26
申请人： Toshihiko Inuyama , Junichi Kimizuka , Makoto Abe , Akihisa Kusano , Kaoru Sato , Kazuhiko Okazawa , Masanori Ishizu , Toshiyuki Ito
发明人： Toshihiko Inuyama , Junichi Kimizuka , Makoto Abe , Akihisa Kusano , Kaoru Sato , Kazuhiko Okazawa , Masanori Ishizu , Toshiyuki Ito
IPC分类号： B41J2/44 , G03G15/04 , H01S5/042 , H04N1/113 , H04N1/23 , H04N1/40
CPC分类号： H04N1/4005 , H04N1/40037
摘要： A light quantity control device suitable for use in a laser beam printer includes a beam generator, a monitor for monitoring the quantity of light of a beam generated by the beam generator, and a controller. The controller controls the light quantity of the beam generated by the beam generator in response to the output of the monitor. The controller includes a digital value output circuit and a light quantity control circuit. The digital value output circuit outputs a digital value representing the quantity of light of the beam, and the light quantity control circuit controls the quantity of light in response to the digital value. The digital value output circuit varies the timing of output of the digital value in accordance with the output of the monitor.

72. 发明授权

US5140349A Recording apparatus 失效
标题翻译：记录装置
公开(公告)号：US5140349A
公开(公告)日：1992-08-18
申请号：US714987
申请日：1991-06-14
申请人： Makoto Abe , Kaoru Seto , Takashi Kawana , Atsushi Kashihara , Hiroshi Mano , Tetsuo Saito , Hiroshi Sasame , Michio Itoh , Masaharu Ohkubo , Hiromichi Yamada , Masaki Ojima
发明人： Makoto Abe , Kaoru Seto , Takashi Kawana , Atsushi Kashihara , Hiroshi Mano , Tetsuo Saito , Hiroshi Sasame , Michio Itoh , Masaharu Ohkubo , Hiromichi Yamada , Masaki Ojima
IPC分类号： H04N1/113 , H04N1/12 , H04N1/40 , H04N1/405 , H04N1/407
CPC分类号： H04N1/407 , H04N1/0411 , H04N1/0443 , H04N1/0446 , H04N1/40037 , H04N1/4005 , H04N1/405 , H04N1/4056 , H04N1/1135 , H04N1/12
摘要： A recording apparatus includes an input circuit for inputting recording data, a process circuit for performing a recording operation on a photosensitive body on the basis of the recording data input from the input circuit, a designating circuit for designating a recording density, and a control circuit for controlling an operating condition of at least a high-voltage circuit on the basis of designation by the designating circuit. The process circuit includes the high-voltage circuit used for the recording operation.
摘要翻译：记录装置包括用于输入记录数据的输入电路，用于根据从输入电路输入的记录数据对感光体进行记录操作的处理电路，用于指定记录密度的指定电路和控制电路用于基于指定电路的指定来控制至少高压电路的工作状态。处理电路包括用于记录操作的高电压电路。

73. 发明授权

US5057851A Method of exposing photosensitive medium for optimum density of reproduced image 失效
标题翻译：曝光光敏介质以达到最佳再现图像密度的方法
公开(公告)号：US5057851A
公开(公告)日：1991-10-15
申请号：US458508
申请日：1989-12-28
申请人： Yutaka Hattori
发明人： Yutaka Hattori
IPC分类号： B41J2/44 , G03G15/04 , H04N1/113 , H04N1/23 , H04N1/40
CPC分类号： H04N1/40 , H04N1/40037
摘要： Method and apparatus for imagewise exposing a photosensitive medium to a laser radiation according to image signals representative of nominal densities of original images, such that the medium is scanned in mutually perpendicular first and second directions at respective first and second scanning intervals. An intensity of a laser beam assigned to expose a given local spot on the photosensitive medium, which local spot has a size equal to the second scanning interval, is determined depending upon at least one of intensities of laser beams assigned to expose two local spots which are adjacent to the given local spot in the second direction, so that an average density of an image reproduced by exposure of the given local spot to the laser beam substantially coincides with the nominal density of the corresponding original image represented by the corresponding image signal.
摘要翻译：根据代表原始图像的标称密度的图像信号，将光敏介质成像曝光到激光辐射的方法和装置，使得介质以相互垂直的第一和第二方向以相应的第一和第二扫描间隔被扫描。分配给曝光光敏介质上的给定局部光点的激光束的强度，该局部光点具有等于第二扫描间隔的尺寸，这取决于被分配以暴露两个局部光点的激光束的强度中的至少一个，在第二方向上与给定的局部光点相邻，使得通过给定的局部光点曝光到激光束再现的图像的平均浓度基本上与由对应的图像信号表示的相应原始图像的标称浓度一致。

74. 发明授权

US5017944A Control system for information recording laser beam 失效
标题翻译：信号记录激光束控制系统
公开(公告)号：US5017944A
公开(公告)日：1991-05-21
申请号：US486834
申请日：1990-03-01
申请人： Hiroki Kitamura , Itsuo Takanashi , Takashi Yamamura , Toshikatsu Ichitou , Hiromichi Tai
发明人： Hiroki Kitamura , Itsuo Takanashi , Takashi Yamamura , Toshikatsu Ichitou , Hiromichi Tai
IPC分类号： H04N1/40 , H04N1/405
CPC分类号： H04N1/4005 , H04N1/40037 , H04N1/4056
摘要： In a control system for an information recording laser beam, an intensity of a laser beam is varied in a predetermined variation pattern during each of sequential one-pixel periods. The laser beam is periodically activated and deactivated in synchronism with a change of the one-pixel periods. A duration of the activating the laser beam within each of the one-pixel periods is controlled in accordance with a density of each of pixels of an image to be recorded.
摘要翻译：在用于信息记录激光束的控制系统中，激光束的强度在每个连续的一个像素周期期间以预定的变化图案变化。与一个像素周期的变化同步地周期性地激活和去激活光束。根据要记录的图像的每个像素的密度来控制在每个一个像素周期内激活激光束的持续时间。

75. 发明授权

US4989039A Image forming apparatus responsive to environmental conditions 失效
标题翻译：适用于环境条件的图像形成装置
公开(公告)号：US4989039A
公开(公告)日：1991-01-29
申请号：US144047
申请日：1988-01-14
申请人： Kimiyoshi Hayashi , Kenichi Suda , Kazuhiko Hirooka
发明人： Kimiyoshi Hayashi , Kenichi Suda , Kazuhiko Hirooka
IPC分类号： G03G15/00 , G03G15/02 , H04N1/29 , H04N1/40
CPC分类号： G03G15/5037 , G03G15/0266 , H04N1/295 , H04N1/40037 , H04N1/4005 , G03G2215/00054 , G03G2215/00084
摘要： An image forming apparatus responsive to environmental conditions has an image forming device for forming a dot image on a recording member. The image forming device includes exposure apparatus for exposing the recording member. A detector detects a humidity condition of the apparatus, and control circuitry regulates the amount of light of the exposure apparatus in accordance with an output of the detector. The control circuitry is adapted, when the humidity detected by the detector is lower than a predetermined value, to select an amount of light of the exposure apparatus larger than that in the case where the humidity is higher than the predetermined value.

76. 发明授权

US4935615A Light intensity control for light beam recorder 失效
标题翻译：光束记录仪的光强度控制
公开(公告)号：US4935615A
公开(公告)日：1990-06-19
申请号：US232168
申请日：1988-08-15
申请人： Yoshida Eiichi , Kenjiro Hori , Takashi Nakahara , Satoshi Akiyama
发明人： Yoshida Eiichi , Kenjiro Hori , Takashi Nakahara , Satoshi Akiyama
IPC分类号： G02B26/10 , B41J2/44 , G02B26/12 , G06K15/12 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/23 , H04N1/40
CPC分类号： H04N1/4005 , G06K15/1214 , H04N1/053 , H04N1/1135 , H04N1/40037 , H04N1/12 , H04N2201/0471
摘要： A beam recorder comprises a beam generator, a deflector for deflecting the beam to scan the beam, and a light intensity control unit for controlling a light intensity of the beam. The deflection has a plurality of deflection planes to which the beam is directed, and at least one of the deflection planes in a non-scan plane. The light intensity control is effected by utilizing a period in which the beam is directed to the non-scan plane.

77. 发明授权

US4910532A Image recording apparatus 失效
标题翻译：图像记录装置
公开(公告)号：US4910532A
公开(公告)日：1990-03-20
申请号：US196010
申请日：1988-05-19
申请人： Hiroshi Hiraguchi
发明人： Hiroshi Hiraguchi
IPC分类号： B41J2/44 , G03G15/04 , G06K15/12 , H04N1/23 , H04N1/40
CPC分类号： B41J2/471 , G06K15/12 , H04N1/40037 , H04N1/4005
摘要： An image recording apparatus which is possible to change the rise on-time of a scanning beam controlled in an on-off manner by a data signal corresponding to image information to reproduce the white portion sufficiently and to obtain a high quality image.
摘要翻译：一种图像记录装置，其可以通过与图像信息相对应的数据信号来改变以开关方式控制的扫描光束的上升时间，以充分再现白色部分并获得高质量图像。

78. 发明授权

US4899344A Semiconductor laser control apparatus 失效
标题翻译：半导体激光控制装置
公开(公告)号：US4899344A
公开(公告)日：1990-02-06
申请号：US279211
申请日：1988-12-02
申请人： Isamu Shibata , Takahiro Asai , Kiyoto Nagasawa , Kenichirou Asada
发明人： Isamu Shibata , Takahiro Asai , Kiyoto Nagasawa , Kenichirou Asada
IPC分类号： G06K15/12 , H01S5/0683 , H04N1/40
CPC分类号： H04N1/40043 , G06K15/1214 , H01S5/0683 , H04N1/40037 , H04N1/4005
摘要： A semiconductor laser control apparatus for controlling an optical output of a semiconductor laser to a predetermined value comprises a switching part coupled in series with the semiconductor laser and controlled by an N-bit image signal, N constant current supply circuits coupled in parallel to each other and in series with the switching part for supplying currents to the switching part so that a driving current is supplied to the semiconductor laser from the switching part, a detector for detecting the optical output of the semiconductor laser and for outputting a detection signal indicative of the detected optical output, and a control part responsive to the detection signal from the detector for controlling the driving current by controlling the N constant current supply circuits so that the optical output of the semiconductor laser becomes the predetermined value.
摘要翻译：用于将半导体激光器的光输出控制到预定值的半导体激光器控制装置包括与半导体激光器串联耦合并由N位图像信号控制的开关部分，并联耦合的N个恒流源电路并且与用于向开关部供给电流的开关部分串联，以便从开关部件向半导体激光器提供驱动电流;检测器，用于检测半导体激光器的光输出并输出表示该半导体激光器的检测信号检测光输出，以及控制部分，响应来自检测器的检测信号，通过控制N个恒流源电路来控制驱动电流，使得半导体激光器的光输出变为预定值。

79. 发明授权

US4853710A Imaging by laser beam scanning 失效
标题翻译：激光束扫描成像
公开(公告)号：US4853710A
公开(公告)日：1989-08-01
申请号：US936079
申请日：1986-11-28
申请人： Kazuyuki Shimada , Tomohiro Nakajima , Hiroaki Kotabe , Kouji Yamanobe , Kozo Yamazaki
发明人： Kazuyuki Shimada , Tomohiro Nakajima , Hiroaki Kotabe , Kouji Yamanobe , Kozo Yamazaki
IPC分类号： G02B5/09 , G06K15/12 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/191 , H04N1/40 , H04N1/401
CPC分类号： H04N1/1916 , G02B5/09 , G06K15/1261 , H04N1/053 , H04N1/1135 , H04N1/40037 , H04N1/4015 , H04N1/12 , H04N1/1911 , H04N2201/0471 , H04N2201/04786
摘要： A laser beam scanning system includes a laser for emitting a laser beam modulated with image information to be recorded and a deflecting device, such as polygon mirror, for deflecting the laser beam over a predetermined angle repetitively, so that the laser beam is scanned on a scanning surface, thereby an image is formed on the scanning surface. When a plurality of laser beams are used at the same time, the plurality of laser beams are arranged in an array inclined with respect to the scanning direction. In this case, a sync sensor generates a sync signal in response to a laser beam received in the first place. When a polygon mirror is so structured to have a reflecting surface which is defined by a curved surface having a predetermined radius of curvature, a f.theta. lens may be discarded. In this case, when a transparent layer is formed on this curved reflecting surface, no distortion in scanning speed is produced even without using any electrical correction. Besides, it is also preferable to control the intensity of laser beam so as to maintain the image density of a resultant image at constant.
摘要翻译：激光束扫描系统包括用于发射用待记录的图像信息调制的激光束的激光器和诸如多面镜的偏转装置，用于使激光束重复地偏转预定角度，使得激光束被扫描扫描表面，从而在扫描表面上形成图像。当同时使用多个激光束时，多个激光束被布置成相对于扫描方向倾斜的阵列。在这种情况下，同步传感器响应于首先接收的激光束产生同步信号。当多面镜被构造为具有由具有预定曲率半径的曲面限定的反射表面时，可以丢弃fθ透镜。在这种情况下，当在该弯曲反射面上形成透明层时，即使不进行任何电校正，也不会产生扫描速度的变形。此外，还优选控制激光束的强度，以便使得到的图像的图像浓度保持恒定。

80. 发明授权

US4849980A Laser beam recording method and apparatus 失效
标题翻译：激光束记录方法和装置
公开(公告)号：US4849980A
公开(公告)日：1989-07-18
申请号：US137222
申请日：1987-12-23
申请人： Takashi Shoji , Takenori Tomita , Hideo Watanabe
发明人： Takashi Shoji , Takenori Tomita , Hideo Watanabe
IPC分类号： H01S5/06 , H01S5/068 , H01S5/0683 , H04N1/40 , H04N1/405
CPC分类号： H04N1/40037 , H01S5/06832 , H04N1/4005 , H01S5/0617 , H01S5/06812
摘要： A laser beam recording method and apparatus are constituted for recording an image by obtaining a laser beam whose optical intensity is modulated by controlling a drive current for a semiconductor laser on the basis of a light emission level instructing signal corresponding to an image signal, and scanning the laser beam on a photosensitive material. The optical output is stabilized by detecting the optical intensity of the laser beam and feeding back a feedback signal corresponding to the detected optical intensity to the light emission level instructing signal. A filter circuit formed so that the gain gradually increases from near to a cutoff frequency of a circuit for the optical output stabilization toward a higher frequency side is disposed in a stage prior to the circuit for the optical output stabilization. Or, a bias current of a value smaller than the value of the drive current that produces the laser beam of the minimum optical intensity capable of exciting the photosensitive material is always fed to the semiconductor laser.
摘要翻译：一种激光束记录方法和装置，用于通过基于与图像信号对应的发光电平指示信号，通过控制半导体激光器的驱动电流来获得其强度被调制的激光束来记录图像，并且扫描激光束在感光材料上。通过检测激光束的光强度并将对应于检测到的光强度的反馈信号反馈给光发射电平指令信号来稳定光输出。滤波器电路被形成为使得增益从用于光输出稳定化到较高频率侧的电路的接近到截止频率的逐渐增加设置在用于光输出稳定的电路之前的阶段。或者，总是向半导体激光器馈送小于产生能够激发感光材料的最小光强度的激光束的驱动电流的值的偏置电流。

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