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Devices for developing an electrostatic charge image on a record sheet by a developer solution
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Inventors: Nishikawa, Masaji; Suzuki, Yoshiro; Yasuda, Tadahiro;
Assignee: Olympus Optical Co., Ltd. (Tokyo, JP)
Primary Examiner: Kee Chi; James
Assistant Examiner:
Attorney, Agent or Firm: Haseltine, Lake & Waters
A device for developing a latent image produced on a record sheet by an effect of electrostatic charge by charged particles dispersed in a developer solution is disclosed. The device comprises a tank containing the developer solution and at least one pair of opposed rollers immersed in said developer solution at an intermediate region of said tank, said opposed rollers being passed by the record sheet therebetween and arranged closely adjacent to the record sheet. |
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DETAILED DESCRIPTION What is claimed is: 1. A device for developing an electrostatic charge image on a record sheet by a developer solution, comprising: a tank containing a developer solution with charged particles dispersed therein, said record sheet being fed from one end of said tank into said developer solution and leaving said tank from another end thereof, and at least one pair of opposed rollers immersed in that part of said developer solution which is located at an intermediate region of said tank, said opposed rollers being resiliently urged against said record sheet under pressure and rotated so as to feed said record sheet through said developer solution, said opposed rollers immersed in said developer solution being formed of electric conductive material and one of said opposed rollers is connected through a resistor to one terminal of a D. C. supply source and the other roller is connected to the other terminal of said D. C. supply source, thereby preventing said electroconductive rollers from being shortcircuited in the absence of said record sheet. 2. The device as claimed in claim 1, wherein said tank includes a plurality pairs of opposed rollers arranged in succession and spaced apart from each other in said intermediate region of said tank, a pair of take up opposed rollers arranged at the inlet end of said tank, a pair of delivering opposed rollers arranged at the outlet end of said tank, a cleaning pad arranged at the rear of one of said delivering opposed rollers, and two opposed perforated guide frames arranged between said successive rollers. 3. A device for developing an electrostatic charge image on a record sheet by a developer solution, comprising: a tank containing a developer solution with charged particles dispersed therein, said record sheet being fed from one end of said tank into said developer solution and leaving said tank from another end thereof, and at least one pair of opposed rollers immersed in that part of said developer solution which is located at an intermediate region of said tank, said opposed rollers being resiliently urged against said record sheet under pressure and rotated so as to feed said record sheet through said developer solution, a D
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