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1. 发明专利

DE3330273A1 未知
公开(公告)号：DE3330273A1
公开(公告)日：1984-02-23
申请号：DE3330273
申请日：1983-08-22
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： KOMATSU ISAMU , ANZAI MASAYASU , HOSHI NOBUYOSHI , AKIMARU SUSUMU
IPC分类号： G03G15/01 , G03G15/08

2. 发明专利

JPS60154262A DEVICE FOR REMOVING UNNECESSARY TONER IN ELECTROPHOTOGRAPHY 失效
公开(公告)号：JPS60154262A
公开(公告)日：1985-08-13
申请号：JP1009984
申请日：1984-01-25
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： AKIMARU SUSUMU , ANZAI MASAYASU , HOSHI NOBUYOSHI , INADA YOUJI
IPC分类号： G03G15/01 , G03G15/08 , G03G15/09
摘要： PURPOSE:To prevent fog or color mixing by separating and removing a toner electrostatically charged to unnecessary polarity with an electric field applied to a conductive fur brush. CONSTITUTION:The first toner 5 is charged positively inside the first developing device 4, but when it is mixed into the second developing device 7, it is reversed in charge to negative polarity by friction with the second toner 8 positively charged. A toner separator comprises a suction casing 12 and a conductive brush 13 installed in it near a sleeve 10 or in contact with it. For example, 500V voltage 14a is applied to the brush 13, and only the toner 5 reversed negatively of both toners 5, 8 is attached to the brush 13 and removed with suction air through the suction opening of the casing 12. As a result, fog or color mixing can be prevented.

3. 发明专利

JPH0211159B2 失效
公开(公告)号：JPH0211159B2
公开(公告)日：1990-03-13
申请号：JP14470082
申请日：1982-08-23
申请人： HITACHI SEISAKUSHO KK , HITACHI KOKI KK
发明人： KOMATSU ISAMU , ANZAI MASAYASU , HOSHI NOBUYOSHI , AKIMARU SUSUMU
IPC分类号： G03G15/01 , G03G15/08

4. 发明专利

DE3239544A1 未知
公开(公告)号：DE3239544A1
公开(公告)日：1983-07-07
申请号：DE3239544
申请日：1982-10-26
申请人： HITACHI LTD
发明人： HOSHI NOBUYOSHI , ANZAI MASAYASU , KOMATSU ISAMU , AKIMARU SUSUMU
IPC分类号： G03G13/01
摘要： A toner of a first color incorporated into a development appartaus for second color is charged to a polarity opposite to a polarity of a charge of an electrostatic latent image for the second color by a frictional action with a toner in the development apparatus for the second color. The toner of the first color incorporated into the second development apparatus is caused to adhere to a charge-non-released region of a drum, whereby accumulation of the first toner in the second color development apparatus is prevented. The first and second toners are electrostatically transferred onto a paper by a bias electric field having a polarity opposite to that of the toner images, whereby at reversal development of the second color, the toner of the first color adhering to the charge-non-released region is prevented from being transferred onto the paper. Further, the toner of the first color, incorporated in the second development apparatus, changed reversly in its polarity, or reduced to about zero in the charge quantity can be removed by electrical and mechanical removal means provided in the second development apparatus.

5. 发明专利

GB2111703B METHOD FOR FORMING MULTI-COLOUR TONER IMAGE 未知
公开(公告)号：GB2111703B
公开(公告)日：1985-06-26
申请号：GB8230358
申请日：1982-10-25
申请人： HITACHI LTD
发明人： HOSHI NOBUYOSHI , ANZAI MASAYASU , KOMATSU ISAMU , AKIMARU SUSUMU
IPC分类号： G03G13/01
摘要： A toner of a first color incorporated into a development appartaus for second color is charged to a polarity opposite to a polarity of a charge of an electrostatic latent image for the second color by a frictional action with a toner in the development apparatus for the second color. The toner of the first color incorporated into the second development apparatus is caused to adhere to a charge-non-released region of a drum, whereby accumulation of the first toner in the second color development apparatus is prevented. The first and second toners are electrostatically transferred onto a paper by a bias electric field having a polarity opposite to that of the toner images, whereby at reversal development of the second color, the toner of the first color adhering to the charge-non-released region is prevented from being transferred onto the paper. Further, the toner of the first color, incorporated in the second development apparatus, changed reversly in its polarity, or reduced to about zero in the charge quantity can be removed by electrical and mechanical removal means provided in the second development apparatus.

6. 发明专利

GB2111703A METHOD FOR FORMING MULTI-COLOUR TONER IMAGE 未知
公开(公告)号：GB2111703A
公开(公告)日：1983-07-06
申请号：GB8230358
申请日：1982-10-25
申请人： HITACHI LTD
发明人： HOSHI NOBUYOSHI , ANZAI MASAYASU , KOMATSU ISAMU , AKIMARU SUSUMU
IPC分类号： G03G13/01
摘要： A toner of a first color incorporated into a development appartaus for second color is charged to a polarity opposite to a polarity of a charge of an electrostatic latent image for the second color by a frictional action with a toner in the development apparatus for the second color. The toner of the first color incorporated into the second development apparatus is caused to adhere to a charge-non-released region of a drum, whereby accumulation of the first toner in the second color development apparatus is prevented. The first and second toners are electrostatically transferred onto a paper by a bias electric field having a polarity opposite to that of the toner images, whereby at reversal development of the second color, the toner of the first color adhering to the charge-non-released region is prevented from being transferred onto the paper. Further, the toner of the first color, incorporated in the second development apparatus, changed reversly in its polarity, or reduced to about zero in the charge quantity can be removed by electrical and mechanical removal means provided in the second development apparatus.

7. 发明专利

JPH096107A DEVELOPING DEVICE 失效
公开(公告)号：JPH096107A
公开(公告)日：1997-01-10
申请号：JP15435095
申请日：1995-06-21
申请人： HITACHI LTD
发明人： ONOSE ATSUSHI , AONO YOSHINORI , AKIMARU SUSUMU , KUMADA KATSUMI , MIKAMI KATSUMASA , TAKEYA MASAHARU
IPC分类号： G03G15/01 , G03G15/08 , G03G15/09
摘要： PURPOSE: To accelerate a color imaging speed by shortening the time required for recovering developer and made to be long because of the localization of the developer and accelerating the switching operation of developing. CONSTITUTION: A developing slit by shutters 6 and 7 is provided between a developer container 1 and a developer carrier 10. By arranging the developing slit inclinedly according to the localization of the developer, the equal quantity of developer can be attached to the carrier 10. Therefore, the developer is uniformly supplied and uniformly eliminated in the longitudinal direction in accordance with the rotation of the carrier 10. Besides, the developer can be eliminated from a developing part immediately after the developing is finished and it is not mixed with the developer of the other color. Since the developer can be eliminated from the developing part immediately after the developing is finished, the developing can be quickly switched. Besides, time required for the developing is shortened and the color imaging speed is accelerated.

8. 发明专利

JPH08194380A DEVELOPING DEVICE 失效
公开(公告)号：JPH08194380A
公开(公告)日：1996-07-30
申请号：JP619195
申请日：1995-01-19
申请人： HITACHI LTD
发明人： ONOSE ATSUSHI , AKIMARU SUSUMU , AONO YOSHINORI
IPC分类号： G03G15/09 , G03G15/08
摘要： PURPOSE: To provide a developing machine capable of instantaneously choosing development or nondevelopment at a low load. CONSTITUTION: In this image forming device provided with a magnet roll 3 in a developing sleeve 4, the developing sleeve 4 having a partial difference in the distance between the axial center of the magnet roll 3 and the surface of the developing sleeve 4 is used and a driving means for rotating or moving the sleeve 4 is provided, to change the distance between a photoreceptor 6 and the surface of the sleeve 4. Therefore, the surface of the developer carrier (developing sleeve) 4 carrying the developer is moved to attain the contact and uncontact of the developer with an image carrier. Thus, the developing machine capable of instantaneously choosing the development or the nondevelopment at the low load can be provided.

9. 发明专利

JPH041907B2 失效
公开(公告)号：JPH041907B2
公开(公告)日：1992-01-14
申请号：JP1961582
申请日：1982-02-12
申请人： HITACHI LTD
发明人： KOMATSU ISAMU , ANZAI MASAYASU , HOSHI NOBUYOSHI , AKIMARU SUSUMU
IPC分类号： G03G13/01 , G03G15/01

10. 发明专利

JPS58189658A Two-color developing method 失效
标题翻译：双色发展方法
公开(公告)号：JPS58189658A
公开(公告)日：1983-11-05
申请号：JP7116182
申请日：1982-04-30
申请人： Hitachi Ltd
发明人： HOSHI NOBUYOSHI , KOMATSU ISAMU , AKIMARU SUSUMU , ANZAI MASAYASU
IPC分类号： G03G13/01 , G03G15/01
CPC分类号： G03G13/013
摘要： PURPOSE:To obtain a clear two-color picture free of color mixing, by making the mass of the 1st toner less than that of the 2nd toner, and scattering the 1st toner mixed with the 2nd toner far away and separating it from the 2nd toner. CONSTITUTION:The 1st toner 5 is carried on the surface of a conveyance sleeve 11 together with the 2nd toner 8 and a developer 9 consisting of a carrier, scooped up to the surface of the sleeve 12, and carried. A small-diameter sleeve 15 rotates faster than the sleeve 12 in inverse proportion to the diameter ratio to the sleeve 12 in order to specify the carried amount of the developer 9, and the toner scatters from the developer 9 striking the sleeve 15. The toner 5 has the mass several times as small as that of the toner 8 and the toner 5 flies farther away from the sleeve 15 than the toner 8. Thus, the clear two-color picture free of color mixing is obtained.
摘要翻译：目的：为了获得无色混合的清晰双色图像，通过使第一调色剂的质量小于第二调色剂的质量，并将与第二调色剂混合的第一调色剂远离第二调色剂并将其与第二调色剂分离。构成：第一调色剂5与第二调色剂8一起承载在输送套筒11的表面上，以及由载体构成的显影剂9，该显影剂9被舀到套筒12的表面上并携带。为了指定显影剂9的承载量，并且调色剂从显影剂9撞击到套筒15上而使小直径套筒15比与套筒12的直径比成反比例比套筒12旋转得更快。调色剂 5的质量比调色剂8的质量小几倍，并且调色剂5比调色剂8远离套筒15飞行。因此，获得了没有混色的透明双色图像。

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