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1. 发明专利

JP2001166597A IMAGE FORMING DEVICE AND ITS TRANSFER PAPER SEPARATION METHOD 失效
公开(公告)号：JP2001166597A
公开(公告)日：2001-06-22
申请号：JP35148099
申请日：1999-12-10
申请人： KONISHIROKU PHOTO IND
发明人： ISOKAWA HIROSHI , FUJII RITSUO , ITAMI AKIHIKO , MATSUBARA AKITOSHI
IPC分类号： B65H29/54 , G03G5/147 , G03G15/08 , G03G15/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming device which prevents the damage by the physical effect that an organic photoreceptor receives, achieves an improvement in the overall durability of the photoreceptor and has high durability and a transfer paper separation method. SOLUTION: The surface layer of the organic photoreceptor of the image forming device having the organic photoreceptor, a developing means for forming a toner image on the surface of the organic photoreceptor, a transfer means for transferring the toner image to transfer paper and a separating pawl for separating the transfer paper from the organic photoreceptor contains a siloxane based resin having a crosslinked structure and the separating pawl described above consists of an amide based resin of a quadrangular pyramid shape.

2. 发明专利

JP2000203732A PICTURE FORMING DEVICE AND ITS CONTROL METHOD 失效
公开(公告)号：JP2000203732A
公开(公告)日：2000-07-25
申请号：JP23555299
申请日：1999-08-23
申请人： KONISHIROKU PHOTO IND
发明人： YAMAZAKI HIROHIKO , MOROHASHI TAKETOSHI , MATSUBARA AKITOSHI
IPC分类号： B65H3/44 , G03G15/00 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To operate copying with high productivity by detecting a size of a document to make a picture formable, even in the case that the size of fixed form can not be detected due to that sheets of document are loaded in disorder on a tray and due to that sheets of document of equal size are loaded in disorder thereon. SOLUTION: This picture forming device 1 comprises an automatic document feeder 2 having a first document size detection means S1 detecting the size of a document in a condition loading it in a document loading tray 200, a second document size detection means S2 detecting the size of fed document, and a document read part 3, and a picture forming part having a transfer material feeder means. The device 1 is further provided with a control means selecting and feeding a transfer material of concerned size in the case that document size information detected in the first document size detection means S1 is a size of fixed form, detecting a size of the document in the second document size detection means S2 in the case that the information is not the size of fixed form, and performing control so as to select and feed the transfer material of concerned size.

3. 发明专利

JPH1048980A IMAGE FORMATION DEVICE 失效
公开(公告)号：JPH1048980A
公开(公告)日：1998-02-20
申请号：JP20587296
申请日：1996-08-05
申请人： KONISHIROKU PHOTO IND
发明人： HANEDA SATORU , SHIGETA KUNIO , SATO YOTARO , MATSUBARA AKITOSHI , IKEDA TADAYOSHI , FUKUCHI MASAKAZU
IPC分类号： G03G21/00 , G03G15/00 , G03G15/20 , G03G15/36
摘要： PROBLEM TO BE SOLVED: To consume appropriate energy by setting a member for fixing a toner image on the front face of a transcription member to a film rotation member having a plate heating element and setting a member for fixing a toner image on the rear face of the transcription member to a roller rotation member having a heating element. SOLUTION: A fixing device 17 is constituted of a heat fixing film 17a as a film rotation member for fixing a toner image on a front image and a heat fixing roller 17b as a roller rotation member for fixing a toner image on the rear image, and the heat fixing roller 17b is drivingly rotated by a fixing drive motor and the heat fixing file 17a is drivenly rotated. Heat and pressure are applied on a nip part formed of the heat fixing film 17a and the heat fixing roller 17b so that adhesion toner on a record paper sheet P to be fed to the nip part is fixed. A halogen heater 177 and a ceramic heater 172 are provided inside the core bar 175 of this heat fixing roller 17b and the heat fixing film 17a respectively.

4. 发明专利

JPH09325663A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09325663A
公开(公告)日：1997-12-16
申请号：JP14589896
申请日：1996-06-07
申请人： KONISHIROKU PHOTO IND
发明人： HANEDA SATORU , SHIGETA KUNIO , SATO YOTARO , FUKUCHI MASAKAZU , MATSUBARA AKITOSHI , IKEDA TADAYOSHI
IPC分类号： G03G21/14 , G03G15/00 , G03G15/36 , H04N1/29
摘要： PROBLEM TO BE SOLVED: To efficiently from front and back images onto an image carrier and to transfer them to the front and back of a transfer material at the same time by allowing image formation on a toner-image receiving body to precede image formation on the photosensitive drum used for transfer to the front of the transfer material, by synchronization with the reading of an original document. SOLUTION: In a transfer area 14b, superimposed color-toner images as a back image on the photoreceptor drum 10 are transferred all at once onto the toner-image receiving body 14a, provided close to the photoreceptor drum 10, by means of a transfer unit 14c to which a voltage having the opposite polarity of toner is applied. In synchronization, in the transfer area 14b, with the back image formed on the toner-image receiving body 14a, the front image as superimposed color-toner images is formed onto the photoreceptor drum 10. Thus, because, the superimposed color-toner images are transferred all at once, color slippage of the toner images on the toner-image receiving body 14a, toner scatter and rub, etc., hardly occur, and satisfactory both-sided color- image-formation with less image-deterioration is performed.

5. 发明专利

JPH09319167A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09319167A
公开(公告)日：1997-12-12
申请号：JP7143897
申请日：1997-03-25
申请人： KONISHIROKU PHOTO IND
发明人： HANEDA SATORU , SHIGETA KUNIO , SATO YOTARO , FUKUCHI MASAKAZU , MATSUBARA AKITOSHI , IKEDA TADAYOSHI
IPC分类号： G03G15/36 , G03G15/00 , G03G15/16 , H04N1/29
摘要： PROBLEM TO BE SOLVED: To obtain both-side images well-proportioned in image density arid a tone by changing an image forming condition, in accordance with the case a toner image is formed for performing a transfer to a second image carrying means or to one surface of a transfer material. SOLUTION: Front surface images on the periphery of a photoreceptor drum 10 are transferred to the front side of a recording paper P altogether by a transfer unit 14c to which a voltage having a polarity opposite to that of toner is applied. At this time, rear surface images on the periphery of a toner image receptor 14a exist on the toner image receptor 14a, without being transferred to the recording paper P. Then, the rear surface images on the periphery of the toner image receptor 14a are transferred to the rear side of the recording paper P altogether by a rear surface transfer unit 14g to which the voltage having the polarity opposite to that of the toner is applied. At this time, for adjusting the tone, a countermeasure on a printer part, side by changes in a potential by electrification by measurement with a potential sensor and process conditions such as image exposure light and a developing condition is taken according to the case the front or rear surface images are formed. Further, the change in an image processing part is possible as well.

6. 发明专利

JPH09311572A IMAGE FORMING DEVICE, AND CONTROL METHOD THEREFOR 失效
公开(公告)号：JPH09311572A
公开(公告)日：1997-12-02
申请号：JP12566096
申请日：1996-05-21
申请人： KONISHIROKU PHOTO IND
发明人： MATSUBARA AKITOSHI , FUKUCHI MASAKAZU , IKEDA TADAYOSHI , HANEDA SATORU , SHIGETA KUNIO , SATO YOTARO
IPC分类号： G03G15/00 , G03G15/16 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To perfectly eliminate electrical electrostatic offset and to perform excellent image recording over a long term by providing an electric field forming means forming electric field between a fixing member and a transfer materiel. SOLUTION: A corona electrifier 316 is provided to be opposed to an upper fixing device 310 and imparts positive charge whose polarity is the same as that of the toner charge of a toner image on the upper surface of recording paper P to the surface of an insulated roller. A corona electrifier 326 provided to be opposed to a lower fixing roller 320 imparts negative charge whose polarity is the same as that of the toner charge of the toner image on the lower surface of the recording paper P to the surface of the insulated roller. The electrifiers 316 and 326 are used as an electric field forming means, the roller 310 is electrified to have the same polarity as that of the toner charge of the upper toner image, and the roller 320 is electrified to have the same polarity as that of the toner charge of the lower toner image to enhance electric repulsive force between the toner and the roller, so that a double-sided toner image is fixed altogether.

7. 发明专利

JPH09311568A IMAGE FORMING METHOD, IMAGE FORMING DEVICE, AND METHOD FOR CONTROLLING IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09311568A
公开(公告)日：1997-12-02
申请号：JP12565996
申请日：1996-05-21
申请人： KONISHIROKU PHOTO IND
发明人： MATSUBARA AKITOSHI , IKEDA TADAYOSHI , FUKUCHI MASAKAZU , HANEDA SATORU , SHIGETA KUNIO , SATO YOTARO
IPC分类号： G03G21/00 , G03G15/00 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To execute one-side or both-side image forming by a simple control by switching the mode in the case where toner images formed on both sides of transfer material are fixed altogether. SOLUTION: This device is provided with a 1st fixing part H1 for fixing the toner image on a surface on an upstream side and a 2nd fixing part H2 fixing the toner image on a back surface on a downstream side by holding and carrying the transfer material between two belt members 301A and 301B of a fixing device 30, which come in contact with each other in a planar state, at the same speed. At the time of one-side image forming, heating is performed only by the 1st fixing part H1 and at the time of both-side image forming, thermal fixing is performed by the 1st and the 2nd fixing parts H1 and H2.

8. 发明专利

JPH09292743A IMAGE FORMING DEVICE, IMAGE FORMING METHOD AND IMAGE FORMING DEVICE CONTROL METHOD 失效
公开(公告)号：JPH09292743A
公开(公告)日：1997-11-11
申请号：JP10749696
申请日：1996-04-26
申请人： KONISHIROKU PHOTO IND
发明人： YOSHINO KUNIHISA , YOKOBORI JUN , HIGASHIURA ISANORI , NIITSUMA TETSUYA , MATSUBARA AKITOSHI
IPC分类号： B41J2/52 , B41J2/44 , G03G15/00 , G03G15/02 , G03G15/04 , G03G15/043 , G03G15/08 , G03G15/16 , G03G15/20 , G03G21/14 , H04N1/04 , H04N1/113 , H04N1/23 , H04N1/29 , H04N1/405 , H04N1/407
摘要： PROBLEM TO BE SOLVED: To realize an image forming device capable of correcting a gradation characteristic and the highest image density to match the switching of recording pixel density. SOLUTION: The device is provided with a recording pixel density switching means which switches recording pixel density to a plurality of levels, a switching control means which switches and controls toner-image forming conditions according to the recording pixel density switched by the recording pixel density switching means, and a CPU 71, as a correction means, which corrects the highest image density and gradation characteristic of the toner image according to the recording pixel density switched to a plurality of levels. In this case, the correction means corrects the highest image density by calculation so as to match the second or later recording pixel density in the correction made by the correction means.

9. 发明专利

JPH09281867A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09281867A
公开(公告)日：1997-10-31
申请号：JP9816596
申请日：1996-04-19
申请人： KONISHIROKU PHOTO IND
发明人： HANEDA SATORU , SHIGETA KUNIO , SATO YOTARO , IKEDA TADAYOSHI , FUKUCHI MASAKAZU , MATSUBARA AKITOSHI
IPC分类号： G03G15/16 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To hardly cause the blurring of a toner image by a shock by making a cleaning blade abut on a toner image receiving body after finishing the transfer of the toner image on a photoreceptor drum onto recording paper. SOLUTION: After finishing the transfer of the toner image on the photoreceptor drum 10 onto the recording paper P by a transfer device 14c, the toner image receiving body cleaning blade 141 of a toner image receiving body cleaning device 140 is rotated with a supporting shaft 142 as the center of rotation before the edge of the toner left after transfer onto the toner image receiving body 14a comes to a cleaning position by the blade 141, and the edge thereof abuts on the body 14a. At such a time, the blade 141 of the device 140 functioning as a cleaning means abuts on the body 14a after even the trailing edge of a surface image on the drum 10 is transferred by the transfer device 14c and passes a transfer area 14b being a transfer position on the transfer device 14c.

10. 发明专利

JPH09258493A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09258493A
公开(公告)日：1997-10-03
申请号：JP7032196
申请日：1996-03-26
申请人： KONISHIROKU PHOTO IND
发明人： HANEDA SATORU , SHIGETA KUNIO , SATO YOTARO , FUKUCHI MASAKAZU , MATSUBARA AKITOSHI , IKEDA TADAYOSHI
IPC分类号： G03G15/00 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To efficiently record the vertically fed images of front and rear surface on the front and rear surfaces of transfer material in a double-sided image forming device simultaneously performing fixing by providing toner images on the front and rear surfers of the transfer material. SOLUTION: An original E is carried on a platen glass 51 passing a paper feeding route constituted of carrying drums 54A, 54B and 54C, while the images of the rear surface is read in a state where a first mirror unit 57 and a second mirror unit 58 are moved from the initial position of scanning shown by broken lines to a stopping position shown by solid lines. Next, respective mirror units are returned to the initial position of scanning and a front surface image on the platen glass 51 is read from the top end side of the original D same as a rear surface image, and the picture signal of the rear surface image is electrically reversed in a main scanning direction, so that it is outputted to a device main body from a reverse direction. The rear surface image is formed at a first image carrying means at the device main body, and is transferred to a second image carrying means, and next the front surface image is formed on the first carrying means, and is fixed after transferring it on the front and rear surfaces of the transfer material by first and second transferring means.

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