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1. 发明专利

JPS60134275A BLADE CLEANING DEVICE OF RECORDING MEDIUM 失效
公开(公告)号：JPS60134275A
公开(公告)日：1985-07-17
申请号：JP24221283
申请日：1983-12-23
申请人： RICOH KK
发明人： TANZAWA SETSU , YASUDA YUUJI
IPC分类号： G03G21/10 , G03G21/00
摘要： PURPOSE:To suppress the black lines of a copy generated by the projections on a photosensitive body to a low level by oscillating axially a cleaning plate along the surface of the photosensitive body by oscillating sources having different frequencies and amplitudes. CONSTITUTION:A pin 22 projecting from a bracket 20 fixed to a cleaning unit housing 21 engages with the cam groove 24 of a cylindrical cam 23. Reference pins 25, 26 which can be slided are oscillated axially by suitable means such as cams so as to oscillated a blade 27. The blade 27 is given with sine curve oscillation A (1-2Hz/sec). The oscillation B which is higher in frequency and smaller in amplitude than the oscillation A is applied to the housing 21. The combined oscillation of both oscillations is thus applied to the blade 27. The number of collision against projections has many peaks and is uniform in the oscillating width.

2. 发明专利

JPS56144461A VARIABLE MAGNIFICATION OPTICAL DEVICE FOR COPYING MACHINE 失效
公开(公告)号：JPS56144461A
公开(公告)日：1981-11-10
申请号：JP4889480
申请日：1980-04-14
申请人： RICOH KK
发明人： YASUDA YUUJI
IPC分类号： G03B27/34 , G03G15/041
摘要： PURPOSE:To decrease the weight of scanning and obtain stable scanning speed by moving a scanner motor exclusively used for driving a lens together with a lens moving carriage in varying magnification by moving a mirror through lens scanning slit exposure thereby changing the optical path length. CONSTITUTION:The copying apparatus consists of a variable magnification part 1A and a copying part 1B, and an electrostatic drum 100 exposed by the light from the mirror part 9 of the part 1A is subjected to prescribed copying in the copying part 1B. After the original on the platen 2 of the variable magnification part is lighted by lighting parts 3-6, 3'-6', it is projected by a lens 7. A lens moving device 8 consists of a rod carrier 10 having a guide rod 12 guiding the lens 7 in an X direction and a carrier bracket 20 moving this carrier 10 in a Z direction and in the direction Y perpendicular to the plane of the figure. A scanner motor for driving the lens is proviced on the side part of said carrier 10.

3. 发明专利

JPS56133747A DUST PREVENTING DEVICE OF ELECTROPHOTOGRAPHIC COPYING MACHINE 失效
公开(公告)号：JPS56133747A
公开(公告)日：1981-10-20
申请号：JP3704880
申请日：1980-03-24
申请人： RICOH KK
发明人： YASUDA YUUJI
IPC分类号： G03G15/04 , G03G15/043 , G03G21/00
摘要： PURPOSE:To prevent toner staining of an optical exposure sytem, by providing a projected line protuberant to the circumference of a photoreceptor along a slit formed through a partition wall for separating the optical system from the other devices, and changing air flow near the circumference of the photoreceptor. CONSTITUTION:Projected line 16 is formed along the upstream side of a slit 15 for the light path of an optical exposure system is provided covering the entire width of receptor 5 so as to keep gap d1. Air flow caused by rotation of receptor 5 in the direction of arrow (B) in the vicinity of the circumference of receptor 5 is bended in its course by projected line 16, thus permitting the toner attached to the circumference of receptor 5 to be carried on the air flow, leaving the circumference, and landing on partition wall 14, and not to fall on slit 15.

4. 发明专利

JPS541021A ILLUMINATOR FOR COPIER 失效
公开(公告)号：JPS541021A
公开(公告)日：1979-01-06
申请号：JP6545077
申请日：1977-06-03
申请人： RICOH KK
发明人： YASUDA YUUJI
IPC分类号： G03B27/54 , G03B27/50 , G03G15/04
摘要： PURPOSE:To simply make a mirror carry out a predetermined angular motion by rotating an oscillating mirror with one-half of the rotation angle of an oscillating member by virtue of a link device.

5. 发明专利

JPS53143331A CLEANING DEVICE FOR ELECTRONIC COPYING APPARATUS OF WET TYPE 失效
公开(公告)号：JPS53143331A
公开(公告)日：1978-12-13
申请号：JP5758077
申请日：1977-05-20
申请人： RICOH KK
发明人： TOMITA SATORU , EBI YUTAKA , KATOU TOSHIBUMI , YASUDA YUUJI , HIRATA TOSHIHISA
IPC分类号： G03G21/10 , G03G21/00
摘要： PURPOSE:To completely remove the toners left on the surface of a photosensitive element with the use of a simple device by arranging a reverse roller at the back of a cleaning roller for the surface of the photosensitive element and in the vicinity of the same surface so that it may be tumed in the oppsoite direction to the moving direction of the same surface.

6. 发明专利

JPS53106047A RECORDER 失效
公开(公告)号：JPS53106047A
公开(公告)日：1978-09-14
申请号：JP2046277
申请日：1977-02-27
申请人： RICOH KK
发明人： KATOU TOSHIBUMI , EBI YUTAKA , YASUDA YUUJI , HIRATA TOSHIHISA
IPC分类号： G03B27/32 , B41J2/44 , B41J25/308 , G03G15/00 , G03G15/04 , G03G15/22 , G06K15/00 , G06K15/12
摘要： PURPOSE:To prevent end face from being contaminated by toners by making the end face of optical fibers retreatable from photosensitive body surface by an electromagnet device as well as to reduce the power consumption of the electromagnet device by restraining the end face in an evacuation or print position by a stopper.

7. 发明专利

JPS53106044A RECORDER 失效
公开(公告)号：JPS53106044A
公开(公告)日：1978-09-14
申请号：JP2045977
申请日：1977-02-27
申请人： RICOH KK
发明人： KATOU TOSHIBUMI , EBI YUTAKA , YASUDA YUUJI , HIRATA TOSHIHISA
IPC分类号： G03B27/32 , B41J2/44 , G03G15/00 , G03G15/04 , G03G15/22
摘要： PURPOSE:To reduce the contamination of end face by moving the end face of optical fibers to an evacuation position from a photosensitive body from the position in extreme proximity to the photosensitive body immediately before the commencemtn of the movement of the photosensitive body, immediately after the stop of the movement thereof, etc.

8. 发明专利

JPS53104241A RECORDER 失效
公开(公告)号：JPS53104241A
公开(公告)日：1978-09-11
申请号：JP1945277
申请日：1977-02-24
申请人： RICOH KK
发明人： TOMITA SATORU , EBI YUTAKA , KATOU TOSHIBUMI , YASUDA YUUJI , HIRATA TOSHIHISA
IPC分类号： G03B27/32 , B41J2/44 , G03G15/00 , G03G15/04 , G03G15/22
摘要： PURPOSE:To automatically detect the soil of an optical path leading to the surface of a photosensitive body by providing a photo-electroconversion element at the face plate which holds the light projecting and of optical fiber adjacent to the light projecting and by receiving the reflected light projected onto the surface of the photosensitive body near the projecting point.

9. 发明专利

JPS59228269A DUSTPROOF DEVICE OF OPTICAL SYSTEM OF COPYING MACHINE OR THE LIKE 失效
公开(公告)号：JPS59228269A
公开(公告)日：1984-12-21
申请号：JP10242383
申请日：1983-06-08
申请人： RICOH KK , NIHON ELECTRIC KK
发明人： TANZAWA SETSU , TANAKA MITSUO , SUZUKI SHIGERU , YASUDA YUUJI
IPC分类号： G02B27/00 , G03G15/04 , G03G15/043
摘要： PURPOSE:To prevent dust, etc., produced in a machine from sticking to an optical exposure system by arranging an ion wind generator between an image forming element and a photosensitive body, and generating an air flow crossing an optical path of exposure. CONSTITUTION:When a high voltage is impressed from a power source 23 to a wire 22 between two parallel electrode plates 20 and 21 over a beltlike photosensitive body 4, an ion wind in a direction B is generated by corona discharge and serves as an air curtain to cut off an air flow between an image-forming lens 3 and the photosensitive body 4. Consequently, developer particles flying in the machine are prevented from sticking to the optical system. When a bias voltage with the opposite polarity is impressed from a power source 24 to the electrode plate 20, dust charged by the corona discharge electrostatically to the positive polarity sticks to the electrode plate 20 positively, so dust collecting effect is also improved.

10. 发明专利

JPS5447659A PAPER DISCHARGE BASE IN COPYING MACHINE 失效
公开(公告)号：JPS5447659A
公开(公告)日：1979-04-14
申请号：JP11404077
申请日：1977-09-22
申请人： RICOH KK
发明人： IIJIMA TAKESHI , YASUDA YUUJI , TANI TATSUO
IPC分类号： B65H1/00 , B65H1/04 , B65H29/00 , B65H31/20 , B65H31/38 , B65H83/00 , G03G15/00 , G03G21/00
摘要： PURPOSE:To make possible automatic copying on both sides of paper and prevent paper feed miss and paper bending by disposing paper detecting members in the delivery path of paper and a paper reference member which moves in the direction parallel with the paper discharge direction and stops in specified positions. CONSTITUTION:A paper size detecting switch 14, a paper detecting switch 15 and paper delivery rollers 16 for both-side copying are provided in the paper conveying path between a both side selecting guide 13 and a both side copying paper discharge base 11. Further, two paper guide members 18 which is movable between the solid line position and the dotted line position by the revolutions of cams 17 and a paper reference member 20 which is movable between the solid line position and the dotted line position by the revolutions of a cam 19 are provided on the both-side copying paper discharge base 11. A paper feed roller 21 protruding from below is provided in the central part of said base 11. Thereby, copying may be performed automatically on both sides of paper of different sizes and paper feed miss and delivering of paper in a bent state may be prevented.

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