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1. 发明专利

JPS56144160A INK JET RECORDING UNIT 失效
公开(公告)号：JPS56144160A
公开(公告)日：1981-11-10
申请号：JP4769380
申请日：1980-04-11
申请人： RICOH KK
发明人： IKEZU YOUHEI , FUJII TADASHI
IPC分类号： B41J2/045 , B41J2/055 , B41J2/175
摘要： PURPOSE:To obtain the ink jet recording unit simple in construction, having no restriction in moving scanning and easy to exchange by a method wherein an ink reservoir is formed integral with a head equipped with an oscillator, ink chamber and a nozzle to make them into one unit. CONSTITUTION:The ink reservoir 8 is formed at the lower position of the nozzle 2 in one side of the rectangular parallelopiped head body 1 equipped with the oscillator 4, the ink chamber 3 and the nozzle 2 and a membrane filter 9 is provided at the bottom surface thereof. The lower part of the ink reservoir 8 and an ink supplying chamber 10 provided at the nozzle section 2 are connected by a supplying path 11. The head body 1 thus constituted is made into one unit and is connected to the other unit by only electrical connections, therefore, it is very easy to attach to and detach from a carrier. Ink is fed from the ink reservoir 8 to the ink liquid chamber 3 sufficiently by capillarity and the setting of the ink at the nozzle section 2 upon resting may also be eliminated. Bubbles will never invade into the ink liquid chamber 3 since thay are removed by the membrane filter 9 at the bottom surface of the ink reservoir 8.

2. 发明专利

JPS5421736A ILLUMINANCE DISTRIBUTION CORRECTION FILTER FOR RECORDING SYSTEM BY MEANS OF ELECTRONIC SCANNING TUBE 失效
公开(公告)号：JPS5421736A
公开(公告)日：1979-02-19
申请号：JP8650477
申请日：1977-07-19
申请人： RICOH KK
发明人： EBI YUTAKA , HIRATA TOSHIHISA , KATOU TOSHIBUMI , IKEZU YOUHEI
IPC分类号： G03B27/32 , B41J2/44 , G03G15/04 , H02M1/08
摘要： PURPOSE:To make the vibration of a focusing light transmitter alley unnecessary, simplify the recorder, and reduce its cost by using the illuminance distribution correction filter which can be easily manufactured and can make the inherent illuminance distribution of the focusing light transmitter alley uniform on the image plane.

3. 发明专利

JPS53100237A DOUBLE SIDE COPYING MACHINE 失效
公开(公告)号：JPS53100237A
公开(公告)日：1978-09-01
申请号：JP1473977
申请日：1977-02-14
申请人： RICOH KK
发明人： HIRATA TOSHIHISA , FUKAZAWA TAKAO , IKEZU YOUHEI
IPC分类号： B41J2/01
摘要： PURPOSE:To obtain a double-side copy from a double-side original in one copying operation by reading the adjoining picture images of the original with a pair of reading means and passing the signals thereof to respectively a pair of driving circuits thereby injecting inks with the ink jet heads disposed on both sides of recording paper.

4. 发明专利

JPS56161533A PREVENTING DEVICE FOR LEAVING BEHIND OF ORIGINAL IN COPYING MACHINE 失效
公开(公告)号：JPS56161533A
公开(公告)日：1981-12-11
申请号：JP6460780
申请日：1980-05-15
申请人： RICOH KK
发明人： IKEZU YOUHEI , AKIYAMA YOSHIKO , SAKURAI SACHIKO
IPC分类号： G03B27/62 , G03G15/00 , G03G15/04
摘要： PURPOSE:To detect the presence or absence of any original on contact glass while an original pressure plate is held closed by forming transparent electrodes on the contact glass, providing plural pieces of electrodes to the undersurface of the original pressure plate and conducting these. CONSTITUTION:A thin-film-like transparent electrode 2 is formed on the surface of contact glass 1. Plural pieces of electrodes 5 are provided to the undersurface of an original pressure plate 3 in such a manner as to contact originals 4 of various sizes when said originals 4 are placed on the prescribed position on the glass 1, so that when there are no originals 4, the electrodes 5 contact the electrodes 2 and conduct to form a closed circuit. If all the electrodes 5 conduct when the plate 3 is held closed upon ending of copying, it is indicative of the absence of the original on the glass 1. When the conduction of, for example, the two electrodes 5 on the undersurface of the plate 3 is blocked, and the other two electrodes 5 not in contact with the original 4 contact the electrode 2, the conduction state can be controlled as compared with full conduction and therefore the remaining of the original is easily detected.

5. 发明专利

JPS5699358A TAPE FOR PREVENTING DOCUMENT FROM COPYING 失效
公开(公告)号：JPS5699358A
公开(公告)日：1981-08-10
申请号：JP239280
申请日：1980-01-12
申请人： RICOH KK
发明人： IKEZU YOUHEI , KARASAWA SHIYUUICHI
IPC分类号： G03G15/04 , G03B27/32 , G03G21/00 , G03G21/04
摘要： PURPOSE:To perfectly prevent secret documents from copying without hindrance in observing them directly with naked eyes, by applying a tape with a glass bead layer formed to the whole surface of them or a part of them. CONSTITUTION:Copy preventing tape 1 is wounded around proper reel 2, and a necessary length of tape 1, when needed, is drawn out and applied to the secret document copying of which has to be prevented. The second transparent adhesive layer 7 is formed to stick glass bead layer 6 onto transparent base 5. Glass beads (b) of layer 6 have 60mum mean sphere diameter and >=1.9 refractive index, and the greater the difference of refractive index between layer 7 and beads (b), the better, and it is preferable that the difference is approximate to 1.0 as closely as possible.

6. 发明专利

JPS5593175A IMAGING POINT ADJUSTING SYSTEM IN ELECTRON TUBE RECORDER 失效
公开(公告)号：JPS5593175A
公开(公告)日：1980-07-15
申请号：JP16515678
申请日：1978-12-30
申请人： RICOH KK
发明人： IKEZU YOUHEI , HIRATA TOSHITAKA , EBI YUTAKA
IPC分类号： G03B27/32 , B41J2/44 , G03G15/04
摘要： PURPOSE:To obtain a distinct imaging point with good accuracy by disposing a solid-state image sensor on the plane identical to or in a conjugate relation with the recording medium plane and adjusting the luminescent spot image by the illuminance distribution signal of luminescent spot in this sensor. CONSTITUTION:The fluorescent face 1b of a cathode ray tube CRT1 and the photo detecting face of a solid state image sensor CCD5 are so disposed as to assume a conjugate relation with respect to a lens 4. The electric signal output distribution of the CCD5 varies with the sharpness of the scanning luminescent spot on the fluorescent face 1b of the CRT1. If the luminescent spot on the fluorescent face 1b is sharp, hence if the imaging on the CCD5 is sharp, the electric signal output distributiion of the CCD5 is limited to a range where the peak value of the illuminance ratio is high and the illuminance distribution is narrow. Thereupon, the peak value and the allowance width of the half value width of the illuminance ratio are beforehand determined and the electric output signal of the CCD5 is actually measured while it is being moved on the optical axis, thence the position where the output of the CCD5 comes within said allowance width is obtained, whereby the sharp imaging point may be obtained rapidly with good accuracy.

7. 发明专利

JPS5582561A READDIN UNIT FOR CYLINDRICAL SCANNING UNIT 失效
公开(公告)号：JPS5582561A
公开(公告)日：1980-06-21
申请号：JP15499978
申请日：1978-12-18
申请人： RICOH KK
发明人： IKEZU YOUHEI
IPC分类号： H04N1/028 , H04N1/06
摘要： PURPOSE:To form sharp image on the sensor at all times, by locating the attachment lens to extend the optical distance from the lens to the object at the object of the imaging lens. CONSTITUTION:The attachment lens 14 is located to the object side of the imaging lens 12 to obtain the same effect that the object point P is located at the point P' much far from the lens 12. Accordingly, the object on the original surface at scanning is made deeper for the depth of focus optically to form shrap image on the sensor at all times.

8. 发明专利

JPS5382355A RECORDER 失效
公开(公告)号：JPS5382355A
公开(公告)日：1978-07-20
申请号：JP15762276
申请日：1976-12-28
申请人： RICOH KK
发明人： EBI YUTAKA , IKEZU YOUHEI
IPC分类号： G03B27/32 , B41J2/44 , G02B5/00 , G02B6/04 , G03G13/04 , G03G15/04 , G03G21/00
摘要： PURPOSE:To enlarge the distance between photo-fiber and photo-sensitive body, but not to increase the light loss, and obtain the record of high resolving power by giving the light an orientation from the end of photo-fiber in the projection direction by use of an absorbing layer.

9. 发明专利

JPS56104353A COPYING MACHINE 失效
公开(公告)号：JPS56104353A
公开(公告)日：1981-08-20
申请号：JP708180
申请日：1980-01-24
申请人： RICOH KK
发明人： IKEZU YOUHEI
IPC分类号： G03G15/04 , G03B27/32 , G03B27/50 , G03B27/54 , G03G21/00 , G03G21/04
摘要： PURPOSE:To make possible copying of even an original stuck the tapes for preventing copying by providing a translucent lighting surface between the translucent reflection mirror in the optical path of effective luminous flux and a light soruce, and making the lighting luminous flux and effective luminous flux optically the same. CONSTITUTION:An imaging lens 18 and a translucent reflection mirror 19 are disposed between a reflection mirror 16 and a photosensitive drum 17, and a light soruce 20 is provided in the position where the effective luminous flux r1 to the drum 17 and the luminous flux r2 reflected by the reflection mirror 19 align. Also, a translucent lighting surface 22 is provided in proximity to the light soruce 20, and the lighting luminous flux r2 and the effective luminous flux r1 are made identical. With this constitution, the light of the light source 20 irradiates the original stuck the tapes 1 for preventing copying and the reflected light passes through the same optical path as that of the incident luminous flux by the effect of the glass beads (b) of the tapes 1, and is imaged on the drum 17. Thereby, even the original stuck the tapes for preventing copying is copied.

10. 发明专利

JPS55110258A MAGNETIC RECORDING MATERIAL AND MAGNETIC PHOTOGRAPHING METHOD USING THIS 失效
公开(公告)号：JPS55110258A
公开(公告)日：1980-08-25
申请号：JP1682879
申请日：1979-02-16
申请人： RICOH KK
发明人： UMEHARA MASAAKI , IKEZU YOUHEI
IPC分类号： G03G19/00 , G03G5/16
摘要： PURPOSE:To enable a sharp copy to be obtained irrespective of any kind of original, by forming a layer for reflecting infrared rays or laser beams on the bottoms of the recesses of a transparent film with the surface having the minute recesses and filling a substance consisting mainly of a ferromagnetic material in the recesses. CONSTITUTION:Thin layer 13 of a material for reflecting infrared rays or laser beams is formed on the bottoms of minute recesses 12 provided on the surface of transparent film 11, and substance 14 consisting mainly of a ferromagnetic material is filled in recesses 12. An original is overlaid on the surface of sheet 1 where substance 14 is present. Sheet 1 is placed in a magnetic field and the reverse side of sheet 1 is illuminated by infrared rays. The rays except those impinging on layers 13 reach the original, and are absorbed in the dark areas of the original, resulting in conversion into heat, and formation of temperature distribution corresponding to the original pattern on the surface of the original. Substance 14 is heated by the transmitted heat and oriented in accordance with the external magnetic field to give a magnetic pattern. This pattern is developed with a magnetic toner and a transfer paper is overlaid on the developed pattern, thus permitting an image to be obtained on the transfer paper.

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