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31. 发明专利

JPH11202345A PRODUCTION OF LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH11202345A
公开(公告)日：1999-07-30
申请号：JP725398
申请日：1998-01-19
申请人： HITACHI LTD
发明人： AKIMARU SUSUMU , KONDO KATSUMI , ABE HIDETOSHI , MIWA TAKAO , WAKAGI MASATOSHI
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/1339 , G02F1/136 , G02F1/1368
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display device with which image non- uniformity or alignment defect caused by spacer beads is prevented and sharp display with no contrast reduction is enabled by arranging the spacer beads only at non-pixel parts on a substrate. SOLUTION: The spray position of a spacer is controlled into non-pixel area. Concerning spray beads 8, spacer beads 1 are dispersed in compressed air or nitrogen gas, and charging is applied until they are carried to the spray port of a beads spray nozzle 9. A color filter 2 is formed on a transparent substrate 3, a black matrix 5 is formed around it and an alignment layer 4 is formed at the upper part of that black matrix. The black matrix 5 uses a conductive member and by grounding this member, an electrostatic latent image can be formed. The spacer beads 1 can be sprayed only at non-pixel parts without being stuck on the side of the same pole. Besides, the spacer beads 1 can be stuck on the side of opposite poles by selecting the charging polarity but in such a case, it is necessary to inversely form the electrostatic latent image.

32. 发明专利

JPH07128974A COLOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH07128974A
公开(公告)日：1995-05-19
申请号：JP27807193
申请日：1993-11-08
申请人： HITACHI LTD
发明人： AKIMARU SUSUMU , AONO YOSHINORI , SHIMADA AKIRA , KUMADA KATSUMI
IPC分类号： B41J2/525 , G03G15/00 , G03G15/01 , G03G15/08
摘要： PURPOSE:To prevent a change in image density with a surrounding environment and to obtain satisfactory color image quality by controlling the operation of a developing device and a toner replenishment means according to information on temperature/humidity detected by the use of a temperature/humidity detection means and information on toner concentration detected by the use of a toner concentration detection means. CONSTITUTION:A temperature/humidity detector 16 is provided on the consol panel of a color printer. When the detector judges that a temperature/humidity detection signal indicates a high humidity, a control signal for the comparison with a toner concentration signal is increased to reduce toner concentration from a reference value, thereby suppressing an increase in image density. Conversely when the detector judges that the temperature/humidity detection signal indicates a low humidity, the control signal for the comparison with the toner concentration signal is reduced to increase the toner concentration from the reference value, thereby suppressing a decrease in image density. To reduce the toner concentration under a high humidity environment, a photosensitive belt 1 and developing devices 1a-1d are operated to consume toner; to increase the toner concentration under a low temperature environment, a toner hopper 13 is operated to carry out toner replenishment, thereby making the toner concentration proper.

33. 发明专利

JPH05201553A PAPER FEED CASSETTE 失效
公开(公告)号：JPH05201553A
公开(公告)日：1993-08-10
申请号：JP977492
申请日：1992-01-23
申请人： HITACHI LTD
发明人： AONO YOSHINORI , AKIMARU SUSUMU , HOSHI NOBUYOSHI
IPC分类号： B65H1/00 , B65H1/26 , B65H31/02 , G03G15/00
摘要： PURPOSE:To miniaturize an image forming device in its entirety by curving one end part of a paper feed cassette so that the projection area of the cassette is made to be small. CONSTITUTION:In an electrophotographing image-forming device, one end part of a cassette 1 for storing therein recording mediums is curved in a sheet pick-up direction. Meanwhile, the other end part 2 of the cassette 1 is slanted so that several recording mediums which are not uniformly aligned when they are stored in the cassette may be aligned. Further, the stored mediums are fed out one by one by means of a pick-up roller 4, and are formed thereon with a toner image by means of an intermediate image-transfer drum 7. Further, a member 3 for pressing the back surface of a medium and a spring 6 are disposed in the bottom part of the cassette so that even a small number of the recording mediums remaining in the cassette may be taken out. The loading and unloading of this cassette 1 is carried out in a direction perpendicular to the sheet pick-up direction. Accordingly, the projection area of the cassette can be made to be smaller than that of a conventional rectangular parallelepiped cassette, thereby it is possible to miniaturize the image forming device in its entirety.

34. 发明专利

JPH031662B2 失效
公开(公告)号：JPH031662B2
公开(公告)日：1991-01-11
申请号：JP8241782
申请日：1982-05-18
申请人： HITACHI LTD
发明人： KOMATSU ISAMU , ANZAI MASAYASU , HOSHI NOBUYOSHI , AKIMARU SUSUMU
IPC分类号： G03G15/01 , G03G15/08

35. 发明专利

JPS6356543B2 失效
公开(公告)号：JPS6356543B2
公开(公告)日：1988-11-08
申请号：JP17014181
申请日：1981-10-26
申请人： HITACHI LTD
发明人： HOSHI NOBUYOSHI , ANZAI MASAYASU , KOMATSU ISAMU , AKIMARU SUSUMU
IPC分类号： G03G13/01 , G03G15/01 , G03G15/08

36. 发明专利

JPS62262059A IMAGE TRANSFER AND RECORDING DEVICE 失效
公开(公告)号：JPS62262059A
公开(公告)日：1987-11-14
申请号：JP10376886
申请日：1986-05-08
申请人： HITACHI LTD
发明人： ANZAI MASAYASU , SAWADA HIROTSUGU , AKIMARU SUSUMU , KIRYU MASAE , ISOO OSAMU , KANAI HIROSHI
IPC分类号： G03G15/16 , G03G15/00
摘要： PURPOSE:To miniaturize the overall constitution of a printer and to lighten the weight of a device by transferring a transfer body, making it pass through above diagonally above a recording body, allowing the lower face or the diagonal lower face of the recording body into contact with the recording body, and transferring an image onto the lower face or the diagonal lower face of the recording body. CONSTITUTION:Cut paper 7 is contained in a cassette 21 set to the diagonal upper part, pushed out by a pickup roller 8, contacts a drum in the diagonal upper part of the drum, and under the action of a transfer device 10, a toner image is transferred onto a form. Subsequently, the form 7 is transferred to the diagonal lower part, and fixed by a fixing roller 14. Comparing with the contact point Q of a photosensitive drum 1 and the form, the contact point P of a pair of fixing rollers 14 is positioned in the lower part, therefore, the form is transferred to the diagonal lower part and passes through the fixing rollers, and carried smoothly. In such way, the overall constitution of a printer is miniaturized and lightened in weight.

37. 发明专利

JPS62135850A COLOR ELECTROPHOTOGRAPHIC RECORDING DEVICE 失效
公开(公告)号：JPS62135850A
公开(公告)日：1987-06-18
申请号：JP27598085
申请日：1985-12-10
申请人： HITACHI LTD
发明人： ANZAI MASAYASU , HOSHI NOBUYOSHI , AKIMARU SUSUMU , KOBAYASHI SHINYA
IPC分类号： H04N1/29 , B41J2/525 , B41J29/38 , G02B26/10 , G03G15/01 , G03G21/14 , H04N1/04 , H04N1/21 , H04N1/23
摘要： PURPOSE:To reduce a position shift and the size of a color electrophotographic recording device by providing a function which determines the timing of the start of a horizontal scan corresponding to each color by counting internal clock pulses by the 2nd number set corresponding to each color from the point of time of the detection of a reference pulse. CONSTITUTION:A photosensitive drum 1 is corona-charged electrostatically and uniformly by an electrostatic charger 2 and an optically modulated laser beam 3Y is scanned horizontally by the optical system composed of a polygon mirror 4 rotated by a motor 600, an Ftheta lens 5, a mirror 6, etc., to expose the photosensitive drum 1 to light, forming an electrostatic latent image on the photosensitive body. A beam detector is provided for only one of three colors and the modulation of three laser beams is controlled on the basis of the detection signal. Namely, the modulation start times of respective color recording laser beams 3Y-3C of Y, M, and C are set as times t1-t3 according to a signal BDY so that respective color toner images are superposed at a horizontally correct position when transferred to a recording form. Consequently, a color image which has superior color reproducibility and resolution is obtained and the device is reduced in size and cost.

38. 发明专利

JPS59172671A Electrophotographic method 失效
标题翻译：电子方法
公开(公告)号：JPS59172671A
公开(公告)日：1984-09-29
申请号：JP4709083
申请日：1983-03-23
申请人： Hitachi Ltd
发明人： HOSHI NOBUYOSHI , AKIMARU SUSUMU , HOSOYA AKIRA
IPC分类号： G03G21/00 , G03G21/08
CPC分类号： G03G21/08
摘要： PURPOSE:To adjust print density by varying the quantity of erasing light and controlling the surface potential of a photoconductor in a laser beam printer. CONSTITUTION:The photoconductor 1 is electrostatically charged by an electrostatic charger 2 and exposed to a light beam 3 containing picture information from a laser to form an electrostatic latent image, which is developed by a developing device 4 to form a toner image 6; and this toner image is transferred electrostatically to transfer paper 7. Residual toner 9 on the photoconductor 1 is removed by a cleaner 10 and residual charges on the photoconductor 1 are erased by the erasing light 11 to reuse the photoconductor 1. When the picture density of the transfer toner image 8 on transfer paper 7 is controlled, the surface potential at a development part 4 should be varied, but the surface potential varies in inverse proportion to the quantity of the erasing light, so the surface potential is controlled by the erasing light 11 to adjust the print density easily.
摘要翻译：目的：通过改变擦除光量并控制激光打印机中光电导体的表面电位来调整打印浓度。构成：光电导体1由静电充电器2静电充电并暴露于包含来自激光器的图像信息的光束3以形成由显影装置4显影以形成调色剂图像6的静电潜像; 并且该调色剂图像被静电转印以转印纸7。通过清洁器10去除光电导体1上的残留色调剂9，并且通过擦除光11擦除感光体1上的残留电荷以重新使用光电导体1.当图像密度转印纸7上的转印调色剂图像8被控制，显影部分4的表面电位应当改变，但是表面电位与擦除光量成反比变化，因此表面电位由擦除光 11可以轻松调整打印浓度。

39. 发明专利

JPS58166363A REMOVING DEVICE OF UNNECESSARY TONER IN ELECTROPHOTOGRAPHY 失效
公开(公告)号：JPS58166363A
公开(公告)日：1983-10-01
申请号：JP4743082
申请日：1982-03-26
申请人： HITACHI LTD
发明人： AKIMARU SUSUMU , HOSHI NOBUYOSHI , KOMATSU ISAMU
IPC分类号： G03G15/01
摘要： PURPOSE:To remove the toner other than the toner for image formation and to prevent photographic fog and mixed coloring by applying voltage on a perforated electrode provided near a flow passage for a developer to suck the unnecessary toner electrostatically and removing the same by air. CONSTITUTION:The 1st toner 5 flows together with the developer which is contained therein and is inverted to a minus potential on a scraper 15 through a sleeve 10. A separator constituted of a perforated electrode 14, a suction 11 provided with an air suction port therein in the position where it does not face the scraper 15 and a brush 13 provided as opposed to the air suction port of the scraper 15 on the outside is provided there. Voltage 12 of +1,000V is applied on the electrode 14 so that only the tober 5 sticks thereon. The stuck toner 5 is scraped away with the brush 13 and is sucked by the suction 11.

40. 发明专利

JPS568165A ELECTROSTATIC RECORDING APPARATUS 失效
公开(公告)号：JPS568165A
公开(公告)日：1981-01-27
申请号：JP8264379
申请日：1979-07-02
申请人： HITACHI LTD
发明人： HOSHI NOBUYOSHI , ANZAI MASAYASU , AKIMARU SUSUMU
IPC分类号： G03G15/01 , G03G13/01
摘要： PURPOSE:To achieve the improvement in the sharpness of recording images of two colors by providing a roller applied with the charge of the polarity opposite from that of a two-component type developer on its surface near the surface of a sleeve and removing the two component type developer mixed from a magnetic power layer. CONSTITUTION:Developing parts 6, 12 which respectively develop the electrostatic latent images formed on a recording medium 1 by a two-component developer 7 and a magnetic toner 13 of a color differing from this are provided. At the time when a magnetic toner layer 22 contacts the surface of the recording medium 1 in the developing part 12, apart of the two-component developer 7 stuck on the recording medium 1 comes off and mixes into the magnetic toner layer 22. A roller 23 applied with the charge of the polarity opposite from that of the two component type developer 7 on its surface is provided in proximity to the lower side of a sleeve 19 in order to remove the two component developer 7a having entered the magnetic toner layer 22 from said layer. The two component developer 7 and the magnetic toner 13 separated in this way are recovered and are again used for development, thus the sharp two-color imges may be obtained.

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