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51. 发明专利

JPH10213943A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH10213943A
公开(公告)日：1998-08-11
申请号：JP1726997
申请日：1997-01-31
申请人： FUJI XEROX CO LTD
发明人： KOBAYASHI SUSUMU , TAGAWA KOZO , KATO TAKESHI , MATSUZAKI YOSHIKI , MURAKAMI JUNICHI , OGATA KENTA
IPC分类号： G03G15/00 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To highly accurately correct register deviation due to a change in ambient temperature without reducing the productivity in forming an image by controlling plural image output parts based on the register deviation correction valve which corresponds to the detected ambient temperature. SOLUTION: When a power is supplied and register checking command is given by a control part 15, a pattern signal for detecting the register deviation is generated by a pattern generator 16, and respective image output parts 5 to 8 are operated by the image control part 17 based on the pattern signal. Thus, the register deviation detecting pattern is formed all over an intermediate transfer belt 1, then, the pattern image is read by the register sensor 13. At this time, the register deviation correction value is calculated by a calculation part 18 based on the reading result of the register sensor 13, the calculated register deviation correction value is stored by a memory 19 so as to correspond to the ambient temperature detected by a temperature sensor 14 at the time of checking the register. And the register alignment is performed based on the register deviation correction value stored by memory 19.

52. 发明专利

JPH10153896A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH10153896A
公开(公告)日：1998-06-09
申请号：JP2859397
申请日：1997-02-13
申请人： FUJI XEROX CO LTD
发明人： TAGAWA KOZO , KOBAYASHI SUSUMU , MATSUZAKI YOSHIKI , OGATA KENTA , KATO TAKESHI , MURAKAMI JUNICHI
IPC分类号： G03G21/14 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To correct periodic register deviation in a main scanning direction by detecting pattern positional fluctuation in the main scanning direction on respective sample timings, also detecting the amplitude and the phase of pattern positional fluctuation on a specified period, and correcting an image writing timing in the main scanning direction based on the detection result. SOLUTION: A positional fluctuation detecting part 104a detects the pattern positional fluctuation in the main scanning direction in each sample timing obtained through a register sensor 12. An amplitude and phase detecting part 104b detects the amplitude and the phase of the pattern positional fluctuation on specified period. A table forming part 105a forms a correction table by making the correction table correspond to each sample timing. A data converting part 105b converts the table data formed by the part 105a to a value for correcting register deviation. An image writing correcting part 14 corrects the image writing operation in the main scanning direction in accordance with a control signal from a control part 101.

53. 发明专利

JPH08146793A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH08146793A
公开(公告)日：1996-06-07
申请号：JP28974094
申请日：1994-11-24
申请人： FUJI XEROX CO LTD
发明人： KOBAYASHI SUSUMU , KIDO MAMORU , TAGAWA KOZO , KOBAYASHI MASAKAZU , OMORI KIMITO , MURAKAMI JUNICHI
IPC分类号： G03G15/16 , G03G21/10
摘要： PURPOSE: To eliminate an image defect such as a deviation in the image and to obtain the excellent color image, by allowing the cleaning device for cleaning the surface of a transfer roll not to operate during the time of image forming by the transfer roller. CONSTITUTION: The cleaning blade 15 is fixed to the toner recovering box 16, and when the transfer roll 10 is in a state separated from the intermediate transfer belt 8, the cleaning blade 15 is in the state capable of cleaning while coming in contact with the transfer roll 10. Then, the device is constituted that the cleaning blade 15 is separated from the transfer roll 10 and imparting no load to the transfer roll 10, when the transfer roll 10 is in the state of coming in contact with the intermediate transfer belt 8. The cleaning device is not actuated at the time of the image transferring operation of the transfer roller 10, and the cleaning device is actuated and the surface of the transfer roll 10 is made cleaning at the non-transferring time only, therefore the load by the cleaning device is not imparted to the transfer roll 10 at the time of the image transferring operation.

54. 发明专利

JPH0888748A COLOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH0888748A
公开(公告)日：1996-04-02
申请号：JP22439894
申请日：1994-09-20
申请人： FUJI XEROX CO LTD
发明人： TAGAWA KOZO , KIDO MAMORU , KOBAYASHI SUSUMU , KOBAYASHI MASAKAZU , OMORI KIMITO , MURAKAMI JUNICHI
IPC分类号： G03G15/01 , H04N1/29
摘要： PURPOSE: To prevent the deviation in color registration caused by a limited phase relation in an image forming rotating phase with respect to a laser beam scanning phase regardless that an integral multiple ratio is realized by enhancing the accuracy of an integral multiple ratio between a laser beam scanning period and an image forming rotation period so as to suppress the deterioration in image quality due to the deterioration in color registration and setting a new integral multiple ratio corresponding to the integral multiple ratio resulting from the change in the recording condition. CONSTITUTION: A laser beam scanning phase and an image forming rotating phase are measured based on a common clock signal outputted from a reference clock generating circuit 113. An integral multiple ratio is set by using a measured value not by a design value and a drive motor control circuit 120 or 140 drives a polygon mirror drive motor 32 or a belt drive motor 103 based on the result of measurement to attain an integral multiple ratio of both the periods. Furthermore, when a recording condition such as an in-equipment temperature is changed, the integral multiple ratio of both the periods is set again. Furthermore, the phase relation is set to a prescribed phase relation by using a delay circuit to delay an image forming rotating signal.

55. 发明专利

JPH0876546A COLOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH0876546A
公开(公告)日：1996-03-22
申请号：JP21471994
申请日：1994-09-08
申请人： FUJI XEROX CO LTD
发明人： KOBAYASHI SUSUMU , KIDO MAMORU , TAGAWA KOZO , KOBAYASHI MASAKAZU , OMORI KIMITO , MURAKAMI JUNICHI
IPC分类号： G03G15/01 , G03G15/08
摘要： PURPOSE: To provide a color image forming device capable of preventing color slurring without improving the dimensional accuracy and the attaching accuracy of an image carrying belt and a driving roll, capable of preventing the color slurring even in the case of thermal expansion and contraction, and capable of preventing the color slurring while restraining a cost from increasing. CONSTITUTION: This device is constituted of a belt reference position detecting sensor 22 detecting the reference position of an intermediate transferring belt 15, a belt reference position detecting sensor 17A detecting the reference position of the driving roll 17, a phase shift detecting device 29 detecting the phase deviation of the rotating position of the belt 15 and the roll 17 based on the detection timing of both detected reference positions, and a slip amount calculating device 30 and a driving roll controller 31 decreasing the phase, shift by advancing and receding for example, slipping the rotating position of the belt 15 and the roll 17 based on the phase deviation.

56. 发明专利

JP2010224203A IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：JP2010224203A
公开(公告)日：2010-10-07
申请号：JP2009071239
申请日：2009-03-24
申请人： FUJI XEROX CO LTD
发明人： MURAKAMI JUNICHI , KITAMURA ATSUYUKI , SATO MASAHIRO , TORIMARU SATORU , OGIWARA ATSUSHI , OKAMOTO TETSUJI , NISHIDE SHUICHI
IPC分类号： G03G15/16 , B65H9/16
摘要： PROBLEM TO BE SOLVED: To transfer a developer image to a recording medium while surely conveying the recording medium in a predetermined direction. SOLUTION: By conveying the recording medium by conveyance force Fg, a slanting roll 22 applies component force Fg1 in a direction where a correction guiding member 64 guides the recording medium, and applies component force Fg2 in a direction orthogonal to the guiding direction. The slanting roll 22 applies force Fg3 corresponding to strength of the component force Fg2 also to a point P on the recording medium within a transfer position T being a band-shaped area. A transfer roll 28 holds the recording medium with an image holding body 26, and conveys the recording medium by conveyance force Ft. When the conveyance force Ft inclines to an opposite side of the correction guiding member 64, the transfer roll 28 and the image holding body 26 apply component force Ft2 also to the point P on the recording medium within the transfer position T being the band-shaped area. The conveyance force Fg of the slanting roll 22 is set so that the force Fg3 may be stronger than the component force Ft2. COPYRIGHT: (C)2011,JPO&INPIT

57. 发明专利

JPH10333525A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH10333525A
公开(公告)日：1998-12-18
申请号：JP14553197
申请日：1997-06-03
申请人： FUJI XEROX CO LTD
发明人： KOBAYASHI SUSUMU , MURAKAMI JUNICHI , HOKARI NORIO , SAMEJIMA JUNICHIRO , NISHI NAOTO
IPC分类号： G03G21/14 , G03G15/00 , G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of reducing simply and surely deterioration in an image quality such as density unevenness and color slippage caused by fluctuations in a load occurring when a recording sheet is fed to a transfer position or carried from the transfer position to a fixing means. SOLUTION: An image forming device is set so that the rear part of a recording sheet is sent out from a paper feeding roll (in a state where the speed is increased) to be separated, while the interval between image forming regions on a photoreceptor passes through at least one of an exposure position and a transfer position. Similarly, the device is set so that the front part of the recording sheet rushes into a fixing means during the above-mentioned period. Similarly, the device is set so that the rear part of the recording sheet is sent out from between a transfer means and the photoreceptor or an intermediate transfer body to be separated during the above-mentioned period.

58. 发明专利

JPH10221913A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH10221913A
公开(公告)日：1998-08-21
申请号：JP2112197
申请日：1997-02-04
申请人： FUJI XEROX CO LTD
发明人： MATSUZAKI YOSHIKI , TAGAWA KOZO , KOBAYASHI SUSUMU , KATO TAKESHI , MURAKAMI JUNICHI , OGATA KENTA
IPC分类号： G03G21/14 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To detect various resist displacements without increasing the number of resist sensors. SOLUTION: The image forming device, which disposes a plurality of image output parts 5-8 along an intermediate transfer belt 1 and can form a multicolor image by superimposing images of different colors onto the intermediate transfer belt 1 in order by means of the image output parts 5-8, are provided with the resist sensor 13 for reading resist-displacement-detection patterns P formed on the intermediate transfer belt 1 by the image output parts 5-8, a sensor moving mechanism 15 for moving the resist sensor 13 in a main scan direction X, and a controller 14 for driving and controlling the sensor moving mechanism 15 according to the positions where the resist-detection-patterns P are formed.

59. 发明专利

JPH08110670A COLOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH08110670A
公开(公告)日：1996-04-30
申请号：JP24660494
申请日：1994-10-12
申请人： FUJI XEROX CO LTD
发明人： KOBAYASHI MASAKAZU , KIDO MAMORU , TAGAWA KOZO , OMORI KIMITO , KOBAYASHI SUSUMU , MURAKAMI JUNICHI
IPC分类号： G03G15/01
摘要： PURPOSE: To prolong the life of a belt, to reduce cost and to uniformize performance by making surface pressure generated on the belt uniform and energizing the belt toward a fixed guide. CONSTITUTION: By controlling the projecting length of the plunger 31 of a belt tensile force uniformizing device 30, belt tensile force T1 and T2 in a driving roll 17 and a supporting roll 18 is uniformized. Therefore, the surface pressure in the lateral direction of an intermediate transfer belt 15 becomes uniform. When the belt 15 is carried in a direction shown by an arrow A in such a state, the surface rolls 41 and the back surface rolls 42 of a pair of belt energizing rolls 40 are driven from a belt side and rotated. When the surface rolls 41 on both sides of the belt 15 are rotated, tensile force P1 and P2 (P1 >P2 ) is generated in accordance with tilt angles θ1 and θ2 on the belt 15, and even when waviness is caused on the belt 15, the waviness is eliminated and the belt 15 is smoothed. Simultaneously, the belt 15 is displaced(walk) toward the fixed guide 50 in the relation of the tensile force P1 >P2 , and the end of the belt 15 abuts on the fixed guide 50 by proper force.

60. 发明专利

JPH082758A BELT DRIVING GEAR 失效
公开(公告)号：JPH082758A
公开(公告)日：1996-01-09
申请号：JP13840694
申请日：1994-06-21
申请人： FUJI XEROX CO LTD
发明人： AOSHIMA KUNIMASA , KOBAYASHI SUSUMU , MURAKAMI JUNICHI , MATSUZAKI TSUTOMU , KIDO MAMORU , FUJITA NAOTOSHI
IPC分类号： G03G15/16 , B65H5/02 , B65H23/032 , G03G21/00
摘要： PURPOSE:To suppress generation of distortion while reducing wear of a belt, in a belt driving gear provided with a belt, at least two rollers and an edge guide. CONSTITUTION:An electromagnetic clutch mechanism 35 is provided, to detect a level of edge force F by a sensor 24, and through a power supply control part 28 and a power supply part 30, a current is allowed to flow in a coil in accordance with a level of the edge force F, to increase rotational speed ratio of an edge guide. When the force F is increased, a rotational speed of the edge guide is increased, to reduce wear of a belt. However, since distortion is generated in the belt in accordance with increasing the rotational speed, a coil current is controlled so as to be prevented from increasing to a certain value or more. Also a constitution, setting a drive transmission rate of the other clutch mechanism and the edge guide to a fixed value, is displayed.

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