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31. 发明专利

JP2004284130A Semiconductor laser modulation driving device and image formation device 有权
公开(公告)号：JP2004284130A
公开(公告)日：2004-10-14
申请号：JP2003077458
申请日：2003-03-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ISHIDA MASAAKI , NIHEI YASUHIRO , OMORI JUNJI , KOZASA MADOKA
IPC分类号： B41J2/44 , G02B26/10 , H01S5/042 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To realize a higher operating speed, improved EMI characteristics and the like by transmitting an LD modulation signal to drive a semiconductor laser (LD) to an LD driving section at a high speed.
SOLUTION: An LD modulation signal is converted to a small amplitude differential signal and transmitted to an LD driving section 170 side from an LD modulation signal generation section 120 by providing a small amplitude differential signal output section 130 on the output side of the LD modulation signal generation section 120 generating an LD modulation signal from image data, providing a small amplitude differential signal input section 160 on the input side of an LD driving section 170 driving a semiconductor (LD) 190 on the basis of the LD modulation signal. The small amplitude differential signal output section 130 is composed of a circuit generating a normal rotation signal of the same phase and a reverse rotation signal of a phase differing by 180 degrees from the LD modulation signal and a circuit outputting a small amplitude differential signal by inputting the normal rotation signal and the reverse rotation signal.
COPYRIGHT: (C)2005,JPO&NCIPI

32. 发明专利

JP2003320702A Imaging method and imaging apparatus 审中-公开
标题翻译：成像方法和成像装置
公开(公告)号：JP2003320702A
公开(公告)日：2003-11-11
申请号：JP2002129318
申请日：2002-04-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MASAKANE , NIHEI YASUHIRO , ISHIDA MASAAKI
IPC分类号： B41J2/44 , G02B26/10 , G03G15/01 , G03G15/04 , G03G15/043 , G03G21/14 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an imaging method whereby temperatures of a plurality of scanning optical systems are detected by a single temperature detecting element so as to simplify a correction of a printing position deviation due to a temperature fluctuation of the scanning optical systems, and an imaging apparatus. SOLUTION: Temperature detecting elements 10 and 11 for detecting temperatures of two scanning optical systems by one element are set at scanning optical systems '5a, 6a' to '5d, 6d' of a tandem form laser scanning optical device. Since there is no problem even when temperatures of adjacent scanning optical systems are considered to be nearly equal to each other in a tandem form laser scanning optical unit, the need of setting temperature sensors for four colors of Y, M, C and K is eliminated. By simplifying temperature sensors as above, a control for correcting, the printing position deviation is simplified, a memory capacity is reduced, and an energy is saved. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种通过单个温度检测元件检测多个扫描光学系统的温度的成像方法，以便简化由于扫描光学器件的温度波动引起的打印位置偏差的校正系统和成像装置。解决方案：用于通过一个元件检测两个扫描光学系统的温度的温度检测元件10和11被设置在串联形式激光扫描光学器件的扫描光学系统5a，6a'至'5d，6d'处。由于即使在串联形式的激光扫描光学单元中认为相邻的扫描光学系统的温度被认为几乎相等也没有问题，因此消除了设置Y，M，C和K四种颜色的温度传感器的需要。通过简化如上所述的温度传感器，用于校正的控制被简化，打印位置偏差减小，并且节省了能量。版权所有（C）2004，JPO

33. 发明专利

JP2003279873A Optical scanner and image formation device 审中-公开
标题翻译：光学扫描仪和图像形成装置
公开(公告)号：JP2003279873A
公开(公告)日：2003-10-02
申请号：JP2002079455
申请日：2002-03-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ISHIDA MASAAKI , HAYASHI YOSHIAKI , OMORI JUNJI , NIHEI YASUHIRO
IPC分类号： B41J2/44 , G02B26/10 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner capable of highly accurately correcting a dot position.
SOLUTION: A laser beam from a semiconductor laser 201 is passed through a collimator lens 202 and a cylinder lens 203, scanned by a polygon mirror 204, passed through an fθ lens 205 and made incident on a photoreceptor 208 through a transparent member 206 and thus an image is formed on the photoreceptor 208. The valid write start position and end position of the scanning laser beam are detected by detection means 101 and 102 and inputted to a dot position deviation detection/control part 110. In the dot position deviation detection/control part 110, the time of scanning the laser beam between the detection means is measured and compared with scanning time in the case that ideal scanning is performed or the like and the deviation amount of the scanning time is obtained and outputted to a pixel clock generation part 120. Also, the output signals of the detection means 101 are supplied also to an image processing part 130 as line synchronizing signals. On the basis of the fluctuation amount of the scanning time for a luminous flux to cross between the detection means, phase data are corrected.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供能够高精度地校正点位置的光学扫描仪。解决方案：来自半导体激光器201的激光束通过准直透镜202和由多面镜204扫描的柱面透镜203，其通过fθ透镜205并通过透明构件入射到感光体208上 206，因此在感光体208上形成图像。扫描激光束的有效写入开始位置和结束位置由检测装置101和102检测并输入到点位置偏差检测/控制部分110.在点位置偏差检测/控制部分110测量在检测装置之间扫描激光束的时间，并且在执行理想扫描等的情况下与扫描时间进行比较，并且获得扫描时间的偏差量并将其输出到像素时钟产生部分120.此外，检测装置101的输出信号也作为线路同步信号提供给图像处理部分130。基于在检测装置之间交叉的光通量的扫描时间的波动量，校正相位数据。版权所有（C）2004，JPO

34. 发明专利

JP2003183063A HEATING FACILITY FOR CONCRETE SCRAP 审中-公开
公开(公告)号：JP2003183063A
公开(公告)日：2003-07-03
申请号：JP2001380238
申请日：2001-12-13
申请人： MITSUBISHI MATERIALS CORP
发明人： HASHIMOTO KOICHI , NISHIMURA YUSUKE , SATO SHINICHIRO , ISHIDA MASAAKI , ABE YUICHIRO
IPC分类号： B09B3/00 , B02C19/18 , B02C23/08 , C04B14/02 , C04B18/16 , C04B20/04
摘要： PROBLEM TO BE SOLVED: To control a heating time for a concrete block more constant than before. SOLUTION: The facility is composed of a vertical heating tower 4a in which the concrete blocks B supplied from upward are heated by hot air, a concrete block B supply means 32 supplying the concrete blocks B toward the heating tower 4a, a discharge means 42 which discharges the concrete blocks B from under the heating tower 4a, and a transfer means 43 which transfers the concrete blocks B to a tumbling means 5. Wherein the discharge means 42 controls the discharge amount of the concrete blocks B so that a load of the transfer means 43 is kept in a predetermined range, and the supply means 32 controls the supply amount of the concrete blocks B so that the upper surface level of the concrete blocks B in the heating tower 4a is kept in a predetermined range. COPYRIGHT: (C)2003,JPO

35. 发明专利

JP2003103830A METHOD OF GENERATING PIXEL CLOCK, PIXEL CLOCK GENERATING APPARATUS, AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：JP2003103830A
公开(公告)日：2003-04-09
申请号：JP2001302644
申请日：2001-09-28
申请人： RICOH KK
发明人： OMORI JUNJI , ISHIDA MASAAKI , NIHEI YASUHIRO
IPC分类号： B41J2/44 , G02B26/10 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a method of generating a pixel clock, a pixel clock generating apparatus, and an image forming apparatus wherein an amount of correction data is markedly reduced, cost reduction can be achieved by reduction of the memory size along with the reduction of the correction data, and moreover accurate correction of position shift of a dot can be executed. SOLUTION: This pixel clock generating apparatus comprises a data region setting means for setting a data region based on a data region set value for determining a number of clock signals in the data region consisting of a plurality of continuous clock signals and a phase shift data setting means for setting phase shift data for executing the phase shift by each data region set by the data region setting means.

36. 发明专利

JP2003015068A Image forming device and pixel clock generating circuit 审中-公开
标题翻译：图像形成装置和像素时钟发生电路
公开(公告)号：JP2003015068A
公开(公告)日：2003-01-15
申请号：JP2001201404
申请日：2001-07-02
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NIHEI YASUHIRO , EMA HIDETOSHI , ISHIDA MASAAKI
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12 , H03L7/081 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus and a pixel clock generating circuit which can correct a scan width. SOLUTION: The pixel clock generating circuit to generate a pixel clock is provided with a high-frequency clock generating circuit 10, a counter 11 incremented at the time of the fall of a high-frequency clock VCLK outputted by the high-frequency clock generating circuit 10, a comparator circuit 12 to compare a counter value with phase data to instruct the phase shift amount of the pixel clock, and a pixel clock control circuit 13 to shift the pixel clock PCLK on the basis of the result of the comparator circuit 12. The phase of the pixel clock PCLK is controlled for every line so as to compensate a write-in start positional deviation in a scanning direction caused by the positional deviation of each light emitting point of a plurality of light fluxes in the scanning direction.
摘要翻译：要解决的问题：提供可以校正扫描宽度的图像形成装置和像素时钟产生电路。解决方案：用于生成像素时钟的像素时钟产生电路设置有高频时钟发生电路10，在高频时钟发生电路输出的高频时钟VCLK的下降时增加的计数器11 如图10所示，比较器电路12将计数器值与相位数据进行比较，指示像素时钟的相移量，以及像素时钟控制电路13，根据比较电路12的结果移位像素时钟PCLK。对于每行控制像素时钟PCLK的相位，以便补偿由扫描方向上的多个光束的每个发光点的位置偏差引起的扫描方向上的写入开始位置偏差。

37. 发明专利

JP2002280809A UNITED STRUCTURE OF HIGH FREQUENCY COMPONENT AND HIGH FREQUENCY TRANSMISSION LINE CONVERSION CIRCUIT 失效
公开(公告)号：JP2002280809A
公开(公告)日：2002-09-27
申请号：JP2001081276
申请日：2001-03-21
申请人： TOSHIBA CORP
发明人： ISHIDA MASAAKI
IPC分类号： H05K9/00 , H01P5/107
摘要： PROBLEM TO BE SOLVED: To provide a downsized united structure of a high frequency component and a high frequency transmission line conversion circuit. SOLUTION: A waveguide section 5 is formed to a waveguide block 3 and a back short section 6 is formed to a cover 4. Then the waveguide block 3 and the cover 4 clamp and fix a dielectric board 1. A space 13 with a size able to contain a high frequency component 2 is formed to the cover 4, and the waveguide block 3 and the cover 4 cover the high frequency component 2. The high frequency component 2 is directly in contact with the waveguide block 3. Furthermore, a board ground 10 is formed to the board 1, a board ground 11 is formed to the high frequency component 2 and the grounds are in contact with the cover 4 and the waveguide block 3 to share the board ground and the circuit ground in common.

38. 发明专利

JP2001201910A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001201910A
公开(公告)日：2001-07-27
申请号：JP2000009630
申请日：2000-01-19
申请人： RICOH KK
发明人： OMORI JUNJI , EMA HIDETOSHI , ITO SATORU , NAKAJIMA TOMOHIRO , ISHIDA MASAAKI , ITO TATSUYA
IPC分类号： G03G21/00 , G03G15/01 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To provide an image forming device which houses a photoreceptor, a light source means, a light projecting means and a substrate mounting a driving circuit for the light source means, etc., and enables a user to confirm whether or not an attachable/detachable image forming unit for every color is loaded in an appropriate position. SOLUTION: In the color image forming device 100, each color image forming unit 103Y, 103M, 103C and 103K is attachably/detachably loaded in each corresponding color opening part, and a discrimination plate 240 for discriminating whether each image forming unit 103Y, 103M, 103C and 103K is appropriately loaded in the opening part in accordance with the color of stored toner 214Y, 214M, 214C and 214K is attached to each unit, besides, a slit for making the discriminating plate 240 pass through is formed in the main body case 101. Then, each image forming unit 103Y, 103M 103C and 103K is easily and surely replaced while preventing each unit from being erroneously loaded.

39. 发明专利

JP2001186348A PULSE WIDTH MODULATION CIRCUIT, OPTICAL WRITER AND IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001186348A
公开(公告)日：2001-07-06
申请号：JP2000090475
申请日：2000-03-29
申请人： RICOH KK
发明人： ISHIDA MASAAKI , EMA HIDETOSHI
IPC分类号： B41J2/44 , G06K15/12 , H03K7/08 , H04N1/40 , H04N1/405
摘要： PROBLEM TO BE SOLVED: To provide a pulse width modulation circuit capable of solving a problem that the linearity/reproducibility of a triangle wave or a tooth-shaped wave is not consistent with acceleration of an operating speed and that the gradation of an image is not consistent with acceleration of the operating speed. SOLUTION: The circuit is provided with an analog delay 15 of a fast analog delay circuit constitution having a signal generation means for generating a clock signal to be a reference and a signal inversely proportional to a digital data input signal and a delay quantity generation means for desirably phase- delaying the clock signal based on the signal inversely proportional to the digital data input signal from the signal generation means, a delay quantity control means 16 for controlling the delay quantity of this part 15 and a modulation signal generating means 17 for generating a modulated signal given pulse width modulation from a pulse and the clock signal from the part 15. Thus the circuit can cope with the case of a high operating speed and can realize the high gradation of an image, etc.

40. 发明专利

JP2001183598A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001183598A
公开(公告)日：2001-07-06
申请号：JP36917899
申请日：1999-12-27
申请人： RICOH KK
发明人： ITO SATORU , NAKAJIMA TOMOHIRO , EMA HIDETOSHI , ISHIDA MASAAKI , ITO TATSUYA , OMORI JUNJI
IPC分类号： G03G21/14 , B41J2/44 , G02B26/10 , G03G15/04 , G03G15/043 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an image forming device to which an image forming unit containing a photosensitive body, a light source means and its driving circuit, a light irradiating means, and a mechanism controlling the rotating speed of a polygon mirror, the operating frequency of the light source means, etc., according to image recording density is fitted detachably and has excellent recyclability and image quality. SOLUTION: The image forming unit 205 is mounted detachably on the image forming device 200 and a connector 231 of the image forming unit 205 is automatically connected to a connector 241 of the image forming device by the insertion of the image forming unit 205. The image forming unit 205 supports a photoreceptor drum 213, an electrostatic charging roller 214, a polygon mirror 216, a scanning lens 215, a printed board 222, etc., between a main body upper case 210 and a main body lower case which can be separated from each other, and a semiconductor laser, etc., is mounted on the printed board 222. The image forming unit 205 has the mechanism adjusting the rotating speed of the polygon mirror 217 and the driving frequency of the semiconductor laser according to image recording density and forms a distortionless image.

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