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1. 发明专利

JPH0428090B2 失效
公开(公告)号：JPH0428090B2
公开(公告)日：1992-05-13
申请号：JP11917983
申请日：1983-06-29
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G03B27/50 , G02B13/08 , G02B13/24 , G03B27/68 , G03G15/04 , G03G15/041

2. 发明专利

JPS62151821A PHOTOSCANNING OPTICAL SYSTEM 失效
公开(公告)号：JPS62151821A
公开(公告)日：1987-07-06
申请号：JP29231085
申请日：1985-12-26
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G02B26/08 , G02B26/10 , G03B27/70 , G03G15/04 , G03G15/047
摘要： PURPOSE:To reduce power consumption and decrease a rise in the temperature in a machine by utilizing unnecessary light effectively by irradiating a photosensitive body with part of nonsignal line from an electromechanical optical modulation element for electrostatic discharging. CONSTITUTION:The electromechanical optical modulation element (DMD) 27 used for a printer generates signal light B from a mirror swinging part and nonsignal light C from a reflecting surface except the mirror switching part. A lens 60, a mirror 61, etc., are arranged in the direction of the nonsignal light C, which is used for electrostatic discharging to illuminates a specific position on the photosensitive body 30. Therefore, the light for electrostatic discharging is obtained from only the light from a light source 21 for driving the DMD 27, so a light source such as a conventional lamp for electrostatic discharging is not necessary and the power consumption is reducible. Further, the rise in the temperature in the machine due to the heat of the lamp, etc. is reduced.

3. 发明专利

JPS61243480A PROJECTING DEVICE 失效
公开(公告)号：JPS61243480A
公开(公告)日：1986-10-29
申请号：JP8518785
申请日：1985-04-19
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G02B26/10 , B41J2/445 , G02B26/08 , G03G15/04 , G03G15/22 , H04N1/113 , H04N5/74
摘要： PURPOSE:To obtain images of excellent picture quality by forming a pattern of light dots on a photodetector with reflected light from oscillatory mirrors in respective mirror arrays according to a subscan so that light dots adjacent in a main scanning direction overlap each other. CONSTITUTION:The length of each mirror 37 of a DMD (deformable mirror device) element 37 in the main scanning direction (X direction) is larger than mirror intervals in the X direction and the 1st and the 2nd mirror arrays are arranged zigzag shifting in X-directional mirror arrangement pitch by a half. The 1st and the 2nd mirror arrays are at an interval of length corresponding to the pitch in the subscanning direction (Y direction). When the 1st and the 2nd mirror arrays P1-1 and P1-2 are moved in the Y direction by distance corresponding to the subscanning pitch, arrays P2-1 and P2-2 are obtained. Thus, adjacent light dots of respective mirror arrays formed on the photodetector according to a subscan overlap each other, so that an excellent image is obtained.

4. 发明专利

JPS61243476A PROJECTING DEVICE 失效
公开(公告)号：JPS61243476A
公开(公告)日：1986-10-29
申请号：JP8518385
申请日：1985-04-19
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G02B26/10 , B41J2/445 , G02B26/08 , G03G15/04 , G03G15/22 , H04N1/113 , H04N5/74
摘要： PURPOSE:To obtain excellent images by forming a light-dot pattern on a photosensitive body with reflected light from oscillatory mirrors in each mirror array according to subscanning so that dots adjacent in the subscanning direction overlap each other. CONSTITUTION:Respective mirrors 37 of a DMD (deformable mirror device) element are formed so that the length in a main scanning direction (X direction) is equal to the mirror intervals in the X direction. Then, the 1st and the 2nd mirror arrays are arranged zigzag shifting in X-directional mirror array pitch by a half. The 1st and the 2nd mirror arrays are arranged at an interval of length shorter than the length corresponding to the pitch in the subscanning direction (Y direction). Therefore, when the mirror arrays obtained by moving the mirror array pattern of the DMD element in the Y direction by the pitch corresponding to the subscanning pitch are put one over the other, arrays P2-1 and P2-2 are obtained and adjacent light dots overlap each other.

5. 发明专利

JPS60254029A VARIABLE MAGNIFICATION COPYING MACHINE 失效
公开(公告)号：JPS60254029A
公开(公告)日：1985-12-14
申请号：JP11030484
申请日：1984-05-30
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G03B27/34 , G02B15/10 , G03G15/04 , G03G15/041
摘要： PURPOSE:To widen the range of copy magnification greatly without varying the size of the copying machine frame by providing an attachment lens for increasing the reduction rate or enlargement rate of a zoom lens at the end position of the movement range of the zoom lens. CONSTITUTION:The attachment lens 10 is mounted on the zoom lens Z at the position 6' near the end of the reduction range of the zoom lens Z. The attachment lens 10 consists of a concave lens 12 and a convex lens 13, and an image of higher reduction magnification than when only the zoom system Z is used is formed on a drum 7. When the zoom lens Z is set at the opposite end position for enlargement, the addition of the attachment lens increases the enlargement magnification of copying. Consequently, the range of copy magnification is widened without increasing the movement range of the zoom lens and sometimes the size of the copying machine and a reduced and an enlarged copy are taken at a time although those copies need to be taken individually before.

6. 发明专利

JPS60247663A ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPS60247663A
公开(公告)日：1985-12-07
申请号：JP10383584
申请日：1984-05-23
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G03G15/04 , G03G15/043 , G03G15/047
摘要： PURPOSE:To prevent waste of a toner, lowering of contrast and image dropout on the border of the copied image by lighting a light source array composed of light emitting diodes and self-converging type lenses short in focal length and small in diameter in accordance with the width of the image to be formed on a photosensitive body to expose the lateral region of said body on which the image is not formed. CONSTITUTION:A light emitting diode (LED) array 20 arranged in the lateral direction of the photosensitive body 1 is lighted in accordance with the nonimage region width, and self-converging type lenses array 21 short in focal length and small in diameter are arranged likewise in the lateral direction are allowed to expose the nonimage region width in a sharp cutting manner. Only the fraction of the LED array 20 corresponding to the nonimage region width S is allowed to emit light to expose the photosensitive body 1 through the lenses 21, thus preventing the toner from attaching to the nonimage area.

7. 发明专利

JPS60229572A PICTURE PROCESSOR 失效
公开(公告)号：JPS60229572A
公开(公告)日：1985-11-14
申请号：JP8660084
申请日：1984-04-27
申请人： CANON KK
发明人： SUEDA TETSUO , TOKUHARA MICHIHIRO
IPC分类号： H04N1/00 , G03G15/36 , G03G21/00 , G03G21/04 , H04N1/387 , H04N1/40 , H04N1/46
摘要： PURPOSE:To prevent paper currency, etc., from being forged by providing a detecting means which detects the contents of an original and controlling image processing according to the state of the original. CONSTITUTION:When the image processing is started, a part D moves reciprocally or in one way in an X direction. At this time, the image processing is not performed and obtained original information is divided into plural sections to discriminate whether the original is paper currency or not. Namely, a discrimination part 2 while scanning on an aimed point detect an original intensity distribution in plural directions from each address on the original and compares it with an intensity distribution stored in a dictionary part 2 to check on their correlation; the threshold value is so set that when there is paper currency among originals, the correlative value is larger than some level, and information when paper currency is present is outputted to a control circuit 3 or stored before being outputted. An actual original A is copied to a recording medium (paper) E by the 2nd and succeeding scans, but a signal generating circuit 4 prevents the information of the original A from being copied as it is to the area where the paper currency is present.

8. 发明专利

JPS60218761A LIGHTING EQUIPMENT 失效
公开(公告)号：JPS60218761A
公开(公告)日：1985-11-01
申请号：JP7513484
申请日：1984-04-16
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G03B27/54 , F21V3/04 , H01J61/35
摘要： PURPOSE:To increase luminescent efficiency and obtain good picture when lighting equipment is used for a picture forming device by forming an anti-reflection coating mainly comprising SiO2 or TiO2 on the surface of a fluorescent tube. CONSTITUTION:Anti-reflection coatings 2a and 2b are formed inner and outer surfaces of a glass pipe 1 and a reflector 3 having a projection opening 3a which extends in an exial direction is mounted on the inner wall of the pipe 1. The inner surface of the pipe is coated with phosphor 4. The anti-reflection coating is formed so that anti-reflection efficiency in the vicinity of wave length having the highest brightness of phosphor is increased. For example, the pipe is immersed in a solution mainly comprising SiO2 so as to form desired coating thickness, and the coating obtained is sintered, then coated with phosphor. A coating mainly comprising TiO2 is formed thereon to increase transmission factor and anti-reflection ability.

9. 发明专利

JPS58176601A GLASS PLATE FOR COPYING MACHINE 失效
公开(公告)号：JPS58176601A
公开(公告)日：1983-10-17
申请号：JP5996382
申请日：1982-04-10
申请人： CANON KK
发明人： TOKUHARA MICHIHIRO
IPC分类号： G03B27/52 , G02B1/11 , G02B1/111 , G03G15/00 , G03G15/04
摘要： PURPOSE:To obtain a stable glass plate with high strength and improved loss in the quantity of light at a low cost by forming thin film layers of silicon dioxide or the like on the surfaces of an optical glass plate to reduce the reflection of light. CONSTITUTION:Thin film layers 12 of silicon dioxide are formed on both sides of a glass substrate 10. The layers 12 are ion implanted layers, and they are formed by exchanging Na ions in the substrate 10 for Si ions contained in a soln. in which the substrate 10 is immersed. Since the reflectance of the layers 12 depends on the thickness for every wavelength, the thickness is determined in accordance with the kind of the photosensitive material of the photosensitive drum of a copying machine.

10. 发明专利

JPS5868064A VARIABLE POWER IMAGE FORMING DEVICE 失效
公开(公告)号：JPS5868064A
公开(公告)日：1983-04-22
申请号：JP16662581
申请日：1981-10-19
申请人： CANON KK
发明人： TORIKAI AKIYOSHI , MORIKAWA TERUO , TOKUHARA MICHIHIRO , KOBAYASHI HIROO , SATOU HIDEKI
IPC分类号： G03B27/34 , G03G15/041
摘要： PURPOSE:To prevent the entry of flared light from an object side to a photoreceptor by moving a light shielding member having an aperture for passage of image forming luminous fluxes in the direction of an optical axis in the stage of changing magnifications together with a lens to which a light shielding plate is fixed. CONSTITUTION:A light shielding mask 5 having an aperture 5' for passage of image forming luminous fluxes is not fixed to side plates 1, 2. When a lens L fixed with a light shielding plate 4 moves in an optical axis direction during the operation for changing magnifications, said mask is moved together with the lens L in the optical axis direction. In the stage of copying at variable power, the lens L moves in the optical axis direction in order to correspond the ratio between the optical path lengths before and behind the lens to the selected magnification and in order to form the image of the end X of the original image in a prescribed position Z, the lens must be moved together with the plate 4 in the direction at a right angle to the optical axis. If the mask 5 and the plate 4 are overlapped in all the strokes, the incidence of flared light to a photosensitive drum D is prevented.

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