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91. 发明专利

JP2003189115A IMAGE FORMING DEVICE, IMAGE FORMING METHOD, IMAGE FORMING PROGRAM, AND STORAGE MEDIUM THEREOF 审中-公开
公开(公告)号：JP2003189115A
公开(公告)日：2003-07-04
申请号：JP2001386563
申请日：2001-12-19
申请人： FUJI XEROX CO LTD
发明人： TANAKA SATOSHI , AOKI MATSUYUKI , YOKOYAMA SHINO
IPC分类号： B41J2/52 , B41J2/525 , G03G15/00 , G03G15/01 , G06T1/00 , G06T5/00 , H04N1/00 , H04N1/407 , H04N1/46 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To solve a problem of a conventional image forming device that cannot have formed a print image with desired image quality because the conventional device cannot adjust the image quality of the image being a requirement of a user in compliance with respective print object images and image forming conditions. SOLUTION: In order to solve the task above, the image forming device of this invention having an image forming section for forming ordinary print image data 10 onto a recording medium 16, includes an image quality adjustment section 38 that uses image quality adjustment pattern image data 20 suitable for the adjustment to have desirable image quality to set a target image value 28 and uses the target image value 28 to adjust a gradation and color processing LUT 18. COPYRIGHT: (C)2003,JPO

92. 发明专利

JP2000089531A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2000089531A
公开(公告)日：2000-03-31
申请号：JP26078198
申请日：1998-09-16
申请人： FUJI XEROX CO LTD
发明人： TANAKA SATOSHI
IPC分类号： H04N1/407 , G03G15/00 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To prepare a gradation conversion table having high reliability in all gradation. SOLUTION: This image forming device is constituted so that the first gradation conversion table obtained at a set-up time and the second gradation conversion table obtained at the executing time of a job are synthesized and an image forming condition is controlled. Besides it is provided with a first gradation extension means 11 extending the number of gradation of the first gradation conversion table, a second gradation extension means 12 extending the number of gradation of the second gradation conversion table and a synthesis means 13 synthesizing the first gradation conversion table extended by the extension means 11 and the second gradation conversion table extended by the extension means 12 so as to prepare the third gradation conversion table.

93. 发明专利

JPS6354671A GRAPHIC PROCESSOR 失效
公开(公告)号：JPS6354671A
公开(公告)日：1988-03-09
申请号：JP19826786
申请日：1986-08-26
申请人： FUJI XEROX CO LTD
发明人： TANAKA SATOSHI
IPC分类号： G06F17/50
摘要： PURPOSE:To correspond to the alteration of a graphic by considering the graphic as closing areas segmented by plural dimension borders, and using the dimension borders to store the dimension border and dimension from dimension information and shape information in a dimension definition part and the shape as the connection of the intersecting points of the dimension borders in a shape definition part. CONSTITUTION:A drawn picture information storage part 6, which stores drawn picture information as the results processed in an arithmetic processing part 2, has the dimension definition part 7 and the shape definition part 8. The dimension definition part 7 stores the dimension border and dimension, storing the dimension border and the dimension every shape element, and it has, for example, a parallel dimension definition part 10, an angle specified dimension definition part 11 and a circle dimension definition part 12. The shape definition part 8 defines the shape as the one obtained by sequentially connecting the intersecting points of the dimension borders to store in it. Thus even if the alteration of the graphic, etc., is executed, the stored drawn picture information can be made not to be different from the information of a real object.

94. 发明专利

JP2003177579A IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：JP2003177579A
公开(公告)日：2003-06-27
申请号：JP2001376309
申请日：2001-12-10
申请人： FUJI XEROX CO LTD
发明人： YOKOYAMA SHINO , AOKI MATSUYUKI , TANAKA SATOSHI
IPC分类号： B41J29/38 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To solve the problem of not being able to maintain the maximum density above a lower limit even when a set up is carried out for every specified printed number of pages when an image of high density is continuously printed in a conventional electrophotographic printing method image forming apparatus. SOLUTION: In the image forming apparatus developing charged toner at a desired density for a latent image written to a photoreceptor drum 10 and printing the toner to a recording medium, the problem is solved by being provided with a set up means 22 carrying out adjustment of image density for every reference printed number of pages γ, and a reference varying means 30 varying the reference printed number of pages γ based on the image printed density of the a printed original. COPYRIGHT: (C)2003,JPO

95. 发明专利

JP2001209217A IMAGE FORMING DEVICE AND PATCH DENSITY MEASURING DEVICE 失效
公开(公告)号：JP2001209217A
公开(公告)日：2001-08-03
申请号：JP2000334611
申请日：2000-11-01
申请人： FUJI XEROX CO LTD
发明人： NAGATA YASUSHI , AOKI MATSUYUKI , TANAKA SATOSHI , NISHIMURA AKIHITO
IPC分类号： B41J13/10 , B65H5/06 , B65H29/52 , G03G15/00 , G03G15/01 , G03G21/16
摘要： PROBLEM TO BE SOLVED: To provide a patch density measuring device capable of accurately measuring the density of a toner patch and an image forming device equipped with the patch density measuring device and capable of forming an image excellent in tone reproduction. SOLUTION: In this patch density measuring device, the density of a fixed toner patch formed on a recording medium P is optically measured in the midst of carrying the medium P. The device is equipped with a patch density sensor 22 radiating light to the fixed toner patch formed on the medium P and receiving reflected light therefrom, a position regulating member 25 regulating the position of the surface of the medium P on a side where the fixed toner patch is carried and having a measuring window 24 formed as the path 23 of the light projected and received by the sensor 22 and a light transmissive member 26 arranged in the window 24.

96. 发明专利

JP2001134047A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001134047A
公开(公告)日：2001-05-18
申请号：JP31414199
申请日：1999-11-04
申请人： FUJI XEROX CO LTD
发明人： OKUBO MASAO , KAWABATA TAKASHI , HAYASHI YUKIO , TAKAHASHI MASAAKI , TANAKA SATOSHI , NISHIMURA AKIHITO , AOKI MATSUYUKI , KATAYAMA MAKOTO
IPC分类号： G03G15/00 , G03G15/01 , G03G15/16 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To effectively prevent the staining of the measuring surface of a process control sensor by visible image particles in an image forming device equipped with an image carrying belt and performing process control by the process control sensor. SOLUTION: This device is equipped with the image carrying belt 2 laid over plural rolls for laying 3 and circularly rotating and carrying a visible image T, one or plural transfer means 4 directly or indirectly transferring the visible image T on an image carrier 1 to the belt 2, and the process control sensor 5 detecting information for image forming process control concerning the visible image T on the belt 2. The sensor 5 is arranged at a position deviated from a visible image particle scattering area A including the contact start point P of a contact member 6 with the belt 2 where the member 6 comes in contact with the belt 2 first on the downstream side of a final transfer means 4(4d) with the belt 2 and oppositely to the stable carrying area of the belt 2 where the change of a gap between the belt 2 and the sensor 5 is within a tolerance.

97. 发明专利

JPH099039A IMAGE DATA PROCESSOR 失效
公开(公告)号：JPH099039A
公开(公告)日：1997-01-10
申请号：JP15437795
申请日：1995-06-21
申请人： FUJI XEROX CO LTD
发明人： SUZUKI TATSUHISA , SUGITA HIROSHI , TANAKA SATOSHI , OBINATA ATSUSHI
IPC分类号： H04N1/387 , G06T1/00 , G06T11/20 , H04N1/41
摘要： PURPOSE: To reduce a data amount at the time of storing bit map data in a memory in spite of the mode of a pattern constituting bit map data. CONSTITUTION: When an image data processor 11 receives the supply of input data 13 showing a character and the like from a host computer 12, it reads corresponding bit map data from font ROM 23, stores it in a page memory 25 and compresses the data obtained by rotating it in a rotation processing part 19 and data which is not rotated by a compression/expansion part 21. Respective data amounts and the data amount when it is not compressed are compared. The minimum data is stored in bit map data RAM 24. Thus, the memory amount required for storing bit map data for respective characters can be reduced.

98. 发明专利

JP2002196552A IMAGE FORMING APPARATUS 失效
公开(公告)号：JP2002196552A
公开(公告)日：2002-07-12
申请号：JP2000398344
申请日：2000-12-27
申请人： FUJI XEROX CO LTD
发明人： NISHIMURA AKIHITO , AOKI MATSUYUKI , TANAKA SATOSHI , NAGATA YASUSHI
IPC分类号： G03G15/00 , G03G15/01 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus equipped with a control means for controlling so that prescribed image density can be obtained in the minimum adjusting time. SOLUTION: The image forming apparatus for forming an image constituted of a fixed toner image on a recording medium by using a developing device 3 for holding two-component developer is provided with a toner concentration measuring means for measuring the toner concentration in the developer, a toner image density measuring means for measuring the density of a reference toner image having a reference potential, and a toner concentration adjusting means for increasing/decreasing the toner concentration in the developer in accordance with a deviation from the prescribed target concentration of the density of the reference toner image, and the toner in the developing device is increased/decreased based on both of the deviation and a conversion coefficient selected in accordance with the concentration area of the toner concentration in the developer.

99. 发明专利

JP2001154427A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001154427A
公开(公告)日：2001-06-08
申请号：JP33309099
申请日：1999-11-24
申请人： FUJI XEROX CO LTD
发明人： AOKI MATSUYUKI , TANAKA SATOSHI , NISHIMURA AKIHITO
IPC分类号： G03G15/00 , G03G15/08 , G03G21/00 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of obtaining an image with higher image quality by properly controlling the toner concentration of developer. SOLUTION: In a color printing device 1 of such a system that the quantity of toner supplied to a developing unit 3 is controlled according to the density of a toner image for control Tp, the toner concentration of the developer in the developing unit 3 is detected by a toner concentration sensor 7. Then, a target value adjustment part 8 changing the density target value of the toner image for control to a high density side when the detected value of the sensor 7 becomes equal to or under a prescribed toner concentration lower limit value and changing the control target value of the developing potential in a direction that developing potential width is enlarged when the detected value becomes equal to or over a prescribed toner concentration upper limit value is arranged.

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