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1. 发明专利

JP2005084305A Method for measuring mobility and relaxation time of material having space charge limited current area 审中-公开
标题翻译：用于测量具有空间电荷的材料的移动和放松时间的方法有限公司
公开(公告)号：JP2005084305A
公开(公告)日：2005-03-31
申请号：JP2003315374
申请日：2003-09-08
申请人： F & M Imaging Technology Co Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社
发明人： MIZUNO TSUNEO
IPC分类号： G03G21/00 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a method for measuring mobility and relaxation time by which the mobility and the relaxation time of semiconductive material such as a transfer belt can be very accurately measured.
SOLUTION: Voltage which gets the space charge limited current area is applied to material to be tested having the space charge limited current area so as to accumulate charge, and the potential of the material to be tested for which the application of voltage has been stopped is measured with time, and the mobility and the relaxation time are obtained by following expressions from obtained relationship between the voltage and the differential coefficient of charge attenuating characteristic. In the expression (1), μ means the mobility, L means the thickness of the material to be tested, V means the voltage, (t) means time and dV/dt means the differential coefficient of the charge attenuating characteristic. In the expression (2), τ means the relaxation time, V means the voltage, (t) means the time and dV/dt means the differential coefficient of the charge attenuating characteristic.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种测量移动性和弛豫时间的方法，通过该方法可以非常精确地测量诸如转印带的半导体材料的迁移率和弛豫时间。
解决方案：将具有空间电荷限制电流面积的电压施加到具有空间电荷限制电流面积的待测试材料，以便积累电荷，并且施加电压的被测试材料的电位随时间测量，通过从电压和微分电荷衰减特性之间的关系得出以下表达式，获得迁移率和弛豫时间。在表达式（1）中，μ表示迁移率，L表示被测材料的厚度，V表示电压，（t）表示时间，dV / dt表示电荷衰减特性的微分系数。在式（2）中，τ表示弛豫时间，V表示电压，（t）表示时间，dV / dt表示电荷衰减特性的微分系数。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2004347912A Image forming apparatus 有权
公开(公告)号：JP2004347912A
公开(公告)日：2004-12-09
申请号：JP2003145747
申请日：2003-05-23
申请人： F & M Imaging Technology Co Ltd , Minolta Co Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社 , ミノルタ株式会社
发明人： YOSHIDA SHIGETAKA , KOBAYASHI AKIRA
IPC分类号： B41J29/38 , B41J29/42 , B41J29/46 , G03G15/00 , G03G21/00 , H04N1/00
CPC分类号： G03G15/553 , G03G15/55
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus firmly urging a user to exchange a unit by surely informing the user that the exchange time of any unit has come without attaching a new device. SOLUTION: In a color printer 1, the remaining service life of the exchangeable unit is detected for every unit, and when the exchange time of any unit comes near, such an effect is displayed on the display part of an operation panel 75. Furthermore, when the remaining service life becomes equal to or under improvement inhibition level (when the exchange time of the unit comes), a message to accelerate the exchange of the unit is displayed on the panel 75 and also image quality improving operation is inhibited. Namely, an image is formed without performing the image quality improving operation. Since the quality of the formed image is lowered, the user is surely informed that the exchange time of the unit comes, and firmly urged to exchange the unit. COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2004219678A Developing apparatus, and image forming apparatus equipped with the same 有权
公开(公告)号：JP2004219678A
公开(公告)日：2004-08-05
申请号：JP2003006535
申请日：2003-01-15
申请人： F & M Imaging Technology Co Ltd , Minolta Co Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社 , ミノルタ株式会社
发明人： KINOSHITA TAKESHI , KUWABARA NOBUO , NARUSE AKIRA
IPC分类号： G03G15/06 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing apparatus and an image forming apparatus constituted so that residual developer on a developer carrier can be efficiently recovered to the developing apparatus, irrespective of an environmental change such as changes in temperature and humidity and a long use, and also image soiling and soiling the vicinity of the developing apparatus owing to the leakage of the residual developer are prevented. SOLUTION: A destaticizing member 34 is arranged in press contact with a developing roller 31 inside the main body housing 14a of the developing apparatus 14 so as to seal the developer. The destaticizing member 34 is constituted by laminating a 1st sheet 34a as a 1st conductive uppermost layer facing the developing roller 31, a 2nd sheet 34b as an intermediate layer and a 3rd sheet 34c as a 2nd conductive lowermost layer. A potential in a direction of attracting the residual developer toward the developing roller 31 is applied on the 1st sheet 34a, and a potential in a direction of attracting the residual developer toward the 3rd sheet 34c is applied on the 3rd sheet 34c. Then, the residual developer is efficiently recovered to the developing apparatus, and the residual developer is never leaked to the outside of the apparatus. COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2004128718A Compressor for image data and method therefor 有权
标题翻译：压缩机用于图像数据及其方法
公开(公告)号：JP2004128718A
公开(公告)日：2004-04-22
申请号：JP2002287645
申请日：2002-09-30
申请人： F & M Imaging Technology Co Ltd , Fujitsu Ltd , Minolta Co Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社 , ミノルタ株式会社 , 富士通株式会社
发明人： SATO KAZUHIKO , IIDA MASARU , OSHIO HIROSHI , MORIKAWA MASAO
IPC分类号： B41J2/52 , G06T5/00 , H04N1/405
摘要： PROBLEM TO BE SOLVED: To provide an image forming device and a method which are capable of shortening a design time, and at the same time, capable of excellently reproducing multi-value data.
SOLUTION: The compressor for image data and the method are used for screen processing to control a dot area to fill the dot as a unit capable of on/off control in order to reproduce the gradation of dark and light images and they are regarding an image forming method to prepare a matrix to regulate the order of filling the dot. That is to say, they have a step of setting dot center coordinates showing the center of the dot; a step of setting dot extinguishing point center coordinates showing the center of the white aggregate dot which is an aggregate of void dots between a plurality of the dot center coordinates; and a step of determining the order of filling the dot in the matrix by using a first calculation value calculated by utilizing the dot center coordinates and the center coordinates of each dot, and a second calculation value calculated by utilizing the dot extinguishing point center coordinates and the center coordinates of each dot in the order from the one with the smallest calculated value. When the value from the dot center coordinates is small, it is in the order from one. When the value in-between the dot extinguishing point center coordinates is small, it is in the reverse order from the total number of the dots of the whole calculation area.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供能够缩短设计时间，同时能够极好地再现多值数据的图像形成装置和方法。解决方案：用于图像数据的压缩器和方法用于屏幕处理以控制点区域以将点填充为能够进行开/关控制的单元，以便再现暗和亮图像的灰度，并且它们是关于用于制备矩阵以调节填充点的顺序的图像形成方法。也就是说，它们具有设置显示点的中心的点中心坐标的步骤; 显示作为多个点中心坐标之间的空白点的集合的白色聚集点的中心的点灭点中心坐标的步骤; 以及通过使用通过利用每个点的点中心坐标和中心坐标计算的第一计算值来确定在矩阵中填充点的顺序的步骤，以及通过利用点灭点中心坐标计算的第二计算值，以及每个点的中心坐标按从计算值最小的顺序排列。当点中心坐标的值很小时，它的顺序是从一个。点熄灭点中心坐标之间的值小时，与整个计算区域的总点数相反。版权所有（C）2004，JPO

5. 发明专利

JP2004112665A Apparatus and method for compressing image data 有权
标题翻译：用于压缩图像数据的装置和方法
公开(公告)号：JP2004112665A
公开(公告)日：2004-04-08
申请号：JP2002275553
申请日：2002-09-20
申请人： F & M Imaging Technology Co Ltd , Fujitsu Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社 , 富士通株式会社
发明人： IIZUKA SHINICHI , FUJII KATSUYASU , IWAKI SHINYA , AKIYAMA FUMITO , OYA YUKIHISA
IPC分类号： B41J5/30 , H04N1/41
摘要： PROBLEM TO BE SOLVED: To provide a compression method for realizing a high-speed processing, by effectively executing as a compression processing without increasing the memory capacity, and further providing a high speed color printer utilizing the compression method. SOLUTION: There are provided a history buffer for storing a plurality of up-to-date input data, a first output section for outputting compression data of image data, and a first compare section for comparing each data of the history buffer and present input data. When the compare section decides that both data match each other, a matching position offset value is outputted to the first output section, while when the compare section decides that both data do not match. There is provided a second output section for outputting a transmission code, distinguishable from a matching code and input data, as transmission data to the first output section. The size of one input data matches a bus width, and a bit width of the matching code and the size of the history buffer are set such that the sum of the matching code and the matching position offset value lies within 1 byte. Further, the transmission code is set within 8 bits, and the first output section outputs the compression data in units of 1 bite. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种用于实现高速处理的压缩方法，通过有效地执行作为压缩处理而不增加存储容量，并且进一步提供利用压缩方法的高速彩色打印机。提供了用于存储多个最新输入数据的历史缓冲器，用于输出图像数据的压缩数据的第一输出部分和用于比较历史缓冲器的每个数据和当前输入数据。当比较部分确定两个数据彼此匹配时，匹配的位置偏移值被输出到第一输出部分，而当比较部分判定两个数据不匹配时。提供了一个第二输出部分，用于输出与匹配代码和输入数据不同的发送代码作为发送数据到第一输出部分。一个输入数据的大小与总线宽度匹配，匹配码的位宽和历史缓冲区的大小被设置为使得匹配码和匹配位置偏移值的和位于1字节内。此外，将传输码设置在8位内，第一输出部分以1位为单位输出压缩数据。版权所有（C）2004，JPO

6. 发明专利

JP2004364008A Image forming method 有权
公开(公告)号：JP2004364008A
公开(公告)日：2004-12-24
申请号：JP2003160702
申请日：2003-06-05
申请人： F & M Imaging Technology Co Ltd , Fujitsu Ltd , Konica Minolta Business Technologies Inc , エフ・アンド・エム・イメージング・テクノロジー株式会社 , コニカミノルタビジネステクノロジーズ株式会社 , 富士通株式会社
发明人： SATO KAZUHIKO , IIDA MASARU , OSHIO HIROSHI , MORIKAWA MASAO
IPC分类号： B41J2/52 , H04N1/52
摘要： PROBLEM TO BE SOLVED: To provide an image forming method for forming an image with high image quality.
SOLUTION: The image forming method utilizes the area gradation processing that utilizes matrices each comprising a plurality of dots each divided into a plurality of cells as regions and specifies the threshold value of the cells, assigns one or a plurality of dots to halftone dots configuring an image to be printed and expresses the density of each halftone dot by the number of colored cells in the dots configuring each halftone dot, and is characterized in to include a step of deciding the arrangement of colored cells the number of which corresponds to the density of the halftone dots in the dots configuring the halftone dots by utilizing a pre-produced pattern, the pattern specifying the arrangement of the colored cells so that optional dots of the dots configuring the halftone dots have a prescribed number or over of adjacent colored cells when the number of the colored cells is increased in the dots configuring the halftone dots.
COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2004333593A Corona charging device 有权
公开(公告)号：JP2004333593A
公开(公告)日：2004-11-25
申请号：JP2003125976
申请日：2003-04-30
申请人： F & M Imaging Technology Co Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社
发明人： HIROTA AKIRA , KATORI KENTARO
IPC分类号： G03G15/02 , H01T19/04
摘要： PROBLEM TO BE SOLVED: To provide a corona charging device which has a dust collection function and can prevent the contamination of electrodes for electrostatic charging by positively collecting and removing the dust in the open air.
SOLUTION: The corona charging device 1A is provided with an electrode 51 for electrostatic charging for electrostatically charging a photoreceptor, an electrode 52 for dust collection for capturing the dust in the air, and a shielding case 53 for housing the electrode 51 for electrostatic charging and the electrode 52 for dust collection. The dust in the open air inhaled from a gap between an opening 531 and a photoreceptor drum 4 by performing forced evacuation from the opening 532, by which the contamination of the electrode 51 for electrostatic charging is prevented.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2004157254A Development device and image forming apparatus 有权
公开(公告)号：JP2004157254A
公开(公告)日：2004-06-03
申请号：JP2002321520
申请日：2002-11-05
申请人： F & M Imaging Technology Co Ltd , Minolta Co Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社 , ミノルタ株式会社
发明人： NARUSE AKIRA , KINOSHITA TAKESHI , KUWABARA NOBUO
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a development device that prevents a toner leakage and is excellent in operability when attached and to provide an image forming apparatus to which the development device can be attached. SOLUTION: The process cartridge 1K has a photoreceptor unit and a development unit. The process cartridge 1K also includes a peelable seal 8 which seals the replenishment opening of the development unit, and a pressing plate 9 disposed on the peelable seal 8. In addition, a slit 7 is formed in the face of the pressing plate 9. One end of the peelable seal 8 extends from the slit 7. Some apertures 91 are formed in the face of the pressing plate 9. The wall face 92 of the aperture 91, which is the nearest to the slit 7 slopes and its cross-section has a tapering shape. Therefore, the wall face 92 and the peelable seal 8 forms an acute angle. Further, the wall face 92 has the shape of a letter V. COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2004139414A Image data compression device and its method 有权
公开(公告)号：JP2004139414A
公开(公告)日：2004-05-13
申请号：JP2002304439
申请日：2002-10-18
申请人： F & M Imaging Technology Co Ltd , Fujitsu Ltd , Minolta Co Ltd , エフ・アンド・エム・イメージング・テクノロジー株式会社 , ミノルタ株式会社 , 富士通株式会社
发明人： AKIYAMA FUMITO , NOSAI TOYOSHIGE
IPC分类号： G06F3/12
摘要： PROBLEM TO BE SOLVED: To provide an image forming device and its method, maintaining a predetermined throughput while minimizing data to be stored for error recovery. SOLUTION: The image forming device has error recovery function for reprinting drawing data which cannot be printed after transmitted from a host. Furthermore, the device comprises a memory for storing intermediate format data and compressed frame data, a stored data selection processing part, and a control part for controlling a timing of releasing a memory region of non-stored data as the other of the intermediate format data and the compressed frame data which is not selected by the stored data selection processing part depending on the type of stored data selected by the stored data selection processing part. Thus, the optimum data out of the data (the intermediate format data and the compressed frame data) created during normal printing processing is selected as error recovery stored data and the timing of releasing the memory depending on the type of the data selected as the stored data is controlled, thereby improving the efficiency of the memory without lowering processing efficiency. COPYRIGHT: (C)2004,JPO

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