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21. 发明专利

JPH09134091A FIXING DEVICE FOR CONTINUOUS PAPER PRINTER 失效
公开(公告)号：JPH09134091A
公开(公告)日：1997-05-20
申请号：JP29158095
申请日：1995-11-10
申请人： HITACHI KOKI KK
发明人： KAWASAKI KAZUHIKO , ISHIKAWA MASAMI , SANO YOSHIHIKO , TSUCHIYA KIYOMI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To prevent reduction in an effective printing speed and to reduce the size of an opening/closing mechanism and the cost by executing the opening/ closing operations of a heating roll and a backup roll, after transient stopping at a position just before the heating roll and a paper come into contact with each other. SOLUTION: When a printing start command is issued from a host device 16, a motor 15 is driven clockwise. When a sensor 27 for detecting the position just before the heating roll 9 and the paper come into contact with each other is turned on, a middle position is obtained and the driving of the motor 15 is transiently stopped. Then, the motor 15 is driven clockwise again and when the sensor 27 for detecting the contact state of the heating roll 9 with the paper 5 is turned on, the motor 15 is stopped. After that, the feeding of the paper is started to start, a printing operation. When printing is stopped, a printing stop command is issued from the host device and the motor 15 is driven counterclockwise. When the middle position as the position just before the heating roll 9 and the paper 5 come into contact with each other is obtained, the sensor 27 is turned on to transiently stop the driving of the motor 15.

22. 发明专利

JPH08175746A IMAGE RECORDING DEVICE 失效
公开(公告)号：JPH08175746A
公开(公告)日：1996-07-09
申请号：JP32048294
申请日：1994-12-22
申请人： HITACHI KOKI KK
发明人： ISHIKAWA MASAMI , TSUCHIYA KIYOMI , KAWASAKI KAZUHIKO
IPC分类号： G03G15/00 , B65H43/02 , B65H43/06
摘要： PURPOSE: To enhance the easiness in manipulation of a recording material accommodating means by furnishing a control means for automatic drawing-out of the accommodating means with respect to the body of an image recording device in conformity to the sensing signal given by a means to sense the condition that the recording material in the accommodating means has attained its specified quantity. CONSTITUTION: When a sensor 27 senses the empty condition of a recording material and an applicable signal is passed to a control part 35, a motor 22 is actuated to perform drawing-out of a hopper. When another sensor 34 senses the full condition of the recording material and an applicable signal is fed to the control part 35, a motor 30 is actuated to perform drawing-out of a stacker. Accordingly the operator is merely required to move to the image recording device when the draw-out motion of the accommodating means is acknowledge, which permits improvement of the easiness in manipulation.

23. 发明专利

JPH07248677A TONER SUPPLY CONTROL METHOD 失效
公开(公告)号：JPH07248677A
公开(公告)日：1995-09-26
申请号：JP4101094
申请日：1994-03-11
申请人： HITACHI KOKI KK
发明人： TAKAHASHI KOICHI , KATO KOJI , TSUCHIYA KIYOMI , ISHIKAWA MASAMI
IPC分类号： G03G15/09 , G03G15/08
摘要： PURPOSE:To provide a toner supply control system capable of being used within a range near a toner density set value for supplying a toner of a two-constituent developer constituted of the toner and a magnetic carrier in an electrophotographic system. CONSTITUTION:A two-constituent developer 3 is scraped from a magnetic roll 5 by a scraping member 10 in a developing device 1, then it is brought into contact with a toner 4 supplied by the toner supplying shaft 8 of a toner supply section 7 and dropped into a mixing chamber 13. The dropped two-constituent developer 3 passes below a mixing chamber forming member 12 by its own weight, then it is lifted by the magnetic roll 5 and converted into a uniform magnetic brush by a shaping member 6, and it is developed on a photoreceptor 11. The toner supply section 7 is constituted of the toner supplying shaft 8, a toner storage container 15, and a stirring member 9, a fixed quantity of toner is discriminated by a toner density detector 14, the toner supplying shaft 8 is rotated for a fixed period, and the scraped quantity of toner is supplied through a groove.

24. 发明专利

JPH06278930A PAPER SHEET STACKING DEVICE 失效
公开(公告)号：JPH06278930A
公开(公告)日：1994-10-04
申请号：JP6825293
申请日：1993-03-26
申请人： HITACHI KOKI KK
发明人： TAKEUCHI YOICHI , ISHIKAWA MASAMI , KIYONO MINORU
IPC分类号： B65H29/22 , B65H31/38 , B65H43/06
摘要： PURPOSE:To always apply the optimum paper sheet pressing force to be by vertically or revolution shifting a sensor for detecting the upper surface position of a paper sheet so that the paper sheet pressing force of a paddle unit can be varied, by allowing the paper sheet stacking position to be changed. CONSTITUTION:A sensor 12 for detecting the upper surface position of a paper sheet 1 is installed onto a holder 14 which is restrained in a shiftable manner only in the vertical direction. The holder 14 is installed on a belt 16 connected with a motor 15, and the sensor 12 shifts vertically by driving the motor 15. The vertical shift varies the paper sheet pressing force of a paddle unit 6 which is installed in a swingable manner around a rotary shaft 7. Accordingly, the paper sheet pressing force of the paddle unit 6 can be set to an optimum value for each paper sheet having different size, continuation quantity and frictional coefficient.

25. 发明专利

JPH06186850A TONER SUPPLY DEVICE FOR ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPH06186850A
公开(公告)日：1994-07-08
申请号：JP33732392
申请日：1992-12-17
申请人： HITACHI KOKI KK
发明人： KATO KOJI , TAKAHASHI KOICHI , ISHIKAWA MASAMI , DOI KOJI , YAMAKI MASAMI
IPC分类号： G03G15/08
摘要： PURPOSE:To prevent fogging caused by the faulty dispersion of toner and an omitted word caused by the lump of toner from occurring and to prevent printing quality from being deteriorated by providing a load preventing plate near an elastic member abutting on a toner supply member. CONSTITUTION:The toner is stored in a easing 13 having a toner supply port on its lower part. A toner feed shaft 1 provided with plural grooves 1a is installed at the toner supply port. A leaf spring 2 abuts on the toner feed shaft 1 and closes the toner supply port lest the excess toner should be discharged inside a developing machine while the shaft 1 is rotating. The load preventing plate 3 made of a material having high rigidity is attached to the lead spring 2 in a direction where load is imposed by the toner 4. The load imposed on the leaf spring 2 is reduced by the load preventing plate 3. Therefore, the pressing force (f) of the spring 2 to the shaft 1 is made weak, and the toner is supplied to the developing machine without being solidified.

26. 发明专利

JPH06133130A PAPER FEED CONTROL SYSTEM FOR ELECTRONIC PHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPH06133130A
公开(公告)日：1994-05-13
申请号：JP27888692
申请日：1992-10-16
申请人： HITACHI KOKI KK
发明人： TSUCHIYA KIYOMI , ISHIKAWA MASAMI , GUNJI YOSHINOBU , OGAWA TSUKASA
IPC分类号： B41J13/00 , B65H7/18 , H04N1/00 , H04N1/29
摘要： PURPOSE:To prevent plural paper sheets from being stacked to a primary stack section by preventing a reception start position of print data from being irregu lar at re-start after the print data are tentatively intermitted in a printer having a photosensing body with a winding mechanism and the paper turn-over use primary stack section. CONSTITUTION:The system is provided with a paper feed signal reception processing 101, a synchronization processing 107 for a joint signal, a print data reception processing 110 and a paper feed processing 113, and when the paper feed processing 113 discriminates (116) the absence of paper feed data, a print flag is reset (115) and synchronization processing with the joint signal is stopped (116), the synchronization with the joint signal by the paper feed signal reception processing 101 is again started (105) by a succeeding paper feed start signal, and the same control as the usual start is implemented.

27. 发明专利

JPH0225343B2 失效
公开(公告)号：JPH0225343B2
公开(公告)日：1990-06-01
申请号：JP1306383
申请日：1983-01-28
申请人： HITACHI KOKI KK
发明人： ORIHARA KATSUHISA , ISHIKAWA MASAMI
IPC分类号： B65H23/188 , B41J15/04 , B41J15/16 , G03G15/00

28. 发明专利

JPH01271373A DETECTING METHOD FOR SHEET LENGTH 失效
公开(公告)号：JPH01271373A
公开(公告)日：1989-10-30
申请号：JP10085688
申请日：1988-04-22
申请人： HITACHI KOKI KK
发明人： AIDA SATOSHI , ISHIKAWA MASAMI , UNO KAZUO
IPC分类号： B65H43/00 , B65H7/02 , B65H45/00
摘要： PURPOSE:To aim at the close detection of travel in a folding part by installing a magnet moving as interlocking with rotation of a turning shaft for holding part movements, and attaching each magnetic detecting element onto a disk in a magnet moving range at regular intervals. CONSTITUTION:A folding part 1 is moved by rotation of a turning shaft 5, and its travel is detected at every 1/2 inch by a detecting element 3. In this turning shaft 5, there is provided with a magnet 7 circumferentially rotating as interlocking with the rotation, and circumferential rotation of the magnet 7 is detected at a pitch of 60 deg. by each magnetic detecting element 8 attached on the circumference at every 60 deg.. Since the turning shaft 5 is moved at one inch per rotation, a movement of the folding part 1 is detected at a 1/6 inch unit, so that detection performance is improved.

29. 发明专利

JPS60129769A METHOD FOR CONTROLLING OIL FEEDING TO FIXING DEVICE 失效
公开(公告)号：JPS60129769A
公开(公告)日：1985-07-11
申请号：JP23851283
申请日：1983-12-16
申请人： HITACHI KOKI KK
发明人： TSUCHIYA KIYOMI , ISHIKAWA MASAMI
IPC分类号： G03G15/20
摘要： PURPOSE:To prevent failure of starting after long idle running and to feed oil in accordance with the width of paper by changing the driving period of plural oil pumps supplying oil to oil-impregnated material wiping off the dirt of toner on a heat roll which is divided in the width direction. CONSTITUTION:Dirt due to toner which is generated on the heat roll 2 fixing a toner image on paper 1 is wiped off by the oil-impregnated agent 4. During the idle running of the roll 2, oil included in a contact part between the roll 2 and the oil-impregnated agent 4 is dried because of the high temperature of the roll 2. Therefore, a valve 5 is opened every prescribed timing to drive an oil pump 6 and supply oil to an oil tank 7, so that the oil is prevented from being dried. At the time of printing, only a pump feeding oil to a part contacting with the paper 1 out of plural pumps 6 is driven at a proper timing period in accordance with paper width information detected by a paper width detecting means. Thus, the generation of the failure of starting of the roll 2 after long idle running is prevented and the proper quantity of oil corresponding to the width of the paper to be used can be fed.

30. 发明专利

JPS6013286B2 失效
公开(公告)号：JPS6013286B2
公开(公告)日：1985-04-06
申请号：JP10937479
申请日：1979-08-27
申请人： HITACHI KOKI KK
发明人： ISHIKAWA MASAMI , OKANO HIROCHIKA , KATAGIRI SHIGENOBU , ASANO MITSUGI , FUJEDA TOSHIAKI
IPC分类号： B41J9/44 , B41J9/38 , H01F7/18

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