US3622237A - Electrostatographic light sensitized drum cleaning arrangement in wet-type development - Google Patents

Electrostatographic light sensitized drum cleaning arrangement in wet-type development Download PDF

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Publication number
US3622237A
US3622237A US820576A US3622237DA US3622237A US 3622237 A US3622237 A US 3622237A US 820576 A US820576 A US 820576A US 3622237D A US3622237D A US 3622237DA US 3622237 A US3622237 A US 3622237A
Authority
US
United States
Prior art keywords
drum
immersed
electrostatographic
lever
wet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US820576A
Other languages
English (en)
Inventor
Fried Walther Vongrabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Application granted granted Critical
Publication of US3622237A publication Critical patent/US3622237A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0088—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge removing liquid developer

Definitions

  • the present invention relates to an electrostatographic light sensitized drum cleaning arrangement and more particularly an improved arrangement for cleaning an electrostatographic light sensitized drum for wet-type development.
  • the present invention provides an arrangement for cleaning an electrostatographic light sensitized drum for use in wet-type development comprising the step of pressing a rotary brush against the surface of said drum which is disposed so as to have its one portion immersed in a developing solution, thereby cleaning thoroughly the surface of the drum and solving the aforementioned problem.
  • FIGURE illustrates one preferred embodiment according to the present invention.
  • a drum 3 has an electrically conductive support 2 and a photoconductive layer 1 formed thereupon.
  • the drum 3 is arranged in such a manner that one portion of the drum 3 is always immersed in a processing solution or developing solution 4 within a developing solution chamber 5.
  • a recording support 6 such as a paper sheet is provided in contact with the surface of the drum 3, which is the photoconductive layer 1, and this contact is maintained by an image transfer electrode 7 disposed on the other side of the recording support 6.
  • a rotary brush 8 is disposed within the developing solution 4 in such a manner that the brush 8 may be pressed against the drum 3 or removed away therefrom.
  • Reference numeral I0 designates an optical system for fonning an electrostatic latent image upon the surface of the photoconductive layer 1.
  • the toner particles remain upon the surface of the photoconductive layer 1 after the image has been transferred to the recording support 6. These particles can be easily separated from the surface of the drum when immersed in the developing solution 4 and removed therefrom into the solution by means of the rotary brush 8. It is preferable to position the rotary brush 8 so as to contact the lowermost portion of the drum 3 within the solution 4 for attaining the best result.
  • the toner consumption can be minimized and the drum can be thoroughly cleaned from the remaining toner particles as compared with the case in which the remaining particles are cleaned of! from the drum at the exterior of the developing solution by means of a brush.
  • An electrostatographic light sensitized drum cleaning arrangement in wet-type developing comprising an open chamber having developing solution containing particles therein;
  • an electrostatographic light sensitized rotatable drum having part thereof immersed in said developing solution; said drum having a photoconductive layer formed thereon; an optical system adapted to form an electrostatic latent imafe upon said layer, said optical system spaced from sa: drum in a location opposite to the immersed part of said drum;
  • a recording support having recording paper thereon positioned in rotatable contact with said layer, said recording support located between said optical system and said immersed part of said drum;
  • said lever being pivotable to selectively move said brush into and out of particle cleaning contact with a portion of said layer that has been rotated to be immersed after passing said optical system and said recording support.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
US820576A 1968-05-02 1969-04-30 Electrostatographic light sensitized drum cleaning arrangement in wet-type development Expired - Lifetime US3622237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43029518A JPS5010497B1 (enrdf_load_stackoverflow) 1968-05-02 1968-05-02

Publications (1)

Publication Number Publication Date
US3622237A true US3622237A (en) 1971-11-23

Family

ID=12278305

Family Applications (1)

Application Number Title Priority Date Filing Date
US820576A Expired - Lifetime US3622237A (en) 1968-05-02 1969-04-30 Electrostatographic light sensitized drum cleaning arrangement in wet-type development

Country Status (3)

Country Link
US (1) US3622237A (enrdf_load_stackoverflow)
JP (1) JPS5010497B1 (enrdf_load_stackoverflow)
GB (1) GB1268075A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776632A (en) * 1972-02-24 1973-12-04 Savin Business Machines Corp Cleaning mechanism for photoconductive surfaces
JPS49146948U (enrdf_load_stackoverflow) * 1973-04-18 1974-12-18
JPS5017235A (enrdf_load_stackoverflow) * 1973-06-13 1975-02-24
JPS5067843U (enrdf_load_stackoverflow) * 1973-10-19 1975-06-17
US4240723A (en) * 1974-05-20 1980-12-23 Elfotec A.G. Process for electrographic image production and an apparatus for carrying out this process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53156172U (enrdf_load_stackoverflow) * 1977-05-16 1978-12-07

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128683A (en) * 1961-04-17 1964-04-14 Xerox Corp Xerographic apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128683A (en) * 1961-04-17 1964-04-14 Xerox Corp Xerographic apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776632A (en) * 1972-02-24 1973-12-04 Savin Business Machines Corp Cleaning mechanism for photoconductive surfaces
JPS49146948U (enrdf_load_stackoverflow) * 1973-04-18 1974-12-18
JPS5017235A (enrdf_load_stackoverflow) * 1973-06-13 1975-02-24
JPS5067843U (enrdf_load_stackoverflow) * 1973-10-19 1975-06-17
US4240723A (en) * 1974-05-20 1980-12-23 Elfotec A.G. Process for electrographic image production and an apparatus for carrying out this process

Also Published As

Publication number Publication date
JPS5010497B1 (enrdf_load_stackoverflow) 1975-04-22
GB1268075A (en) 1972-03-22

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