KR100261088B1 - Drying unit for wet type electrophotographic printing apparatus - Google Patents

Drying unit for wet type electrophotographic printing apparatus Download PDF

Info

Publication number
KR100261088B1
KR100261088B1 KR1019970054867A KR19970054867A KR100261088B1 KR 100261088 B1 KR100261088 B1 KR 100261088B1 KR 1019970054867 A KR1019970054867 A KR 1019970054867A KR 19970054867 A KR19970054867 A KR 19970054867A KR 100261088 B1 KR100261088 B1 KR 100261088B1
Authority
KR
South Korea
Prior art keywords
roller
dry
toner
dry roller
carrier
Prior art date
Application number
KR1019970054867A
Other languages
Korean (ko)
Other versions
KR19990033498A (en
Inventor
김용국
Original Assignee
윤종용
삼성전자주식회사
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 윤종용, 삼성전자주식회사 filed Critical 윤종용
Priority to KR1019970054867A priority Critical patent/KR100261088B1/en
Publication of KR19990033498A publication Critical patent/KR19990033498A/en
Application granted granted Critical
Publication of KR100261088B1 publication Critical patent/KR100261088B1/en

Links

Images

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0088Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge removing liquid developer
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/11Removing excess liquid developer, e.g. by heat
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/06Developing structures, details
    • G03G2215/0634Developing device
    • G03G2215/0658Liquid developer devices
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/0026Cleaning of foreign matter, e.g. paper powder, from imaging member
    • G03G2221/0068Cleaning mechanism
    • G03G2221/0084Liquid

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wet Developing In Electrophotography (AREA)

Abstract

PURPOSE: A dry unit of a wet type electronic photography mode printer is provided to clean the surface of a dry roller by enabling a cleaning roller to clean the residual including a toner stick to a toner. CONSTITUTION: A dry roller(300) is contacted with the transfer surface of a photosensitive belt(200) and rotated. The dry roller(300) absorbs a carrier in ink stick to the transfer surface. A heating roller(400) heats the dry roller(300) and evaporates the carrier absorbed. A cleaning roller(500) is contacted with the dry roller(300) and rotated. The cleaning roller(500) cleans a toner stick to the outer circumference of the dry roller(300). An injection unit injects an adhesive liquid(611) to the outer circumference of the cleaning roller(500). The injection unit includes a storage tank(610), a pump(620) and a nozzle pipe(600).

Description

습식 전자사진방식 인쇄장치의 건조유니트{Drying unit for wet type electrophotographic printing apparatus}Drying unit for wet type electrophotographic printing apparatus

본 발명은 감광벨트에 부착된 액상의 캐리어를 건조시키는 습식 전자사진방식 인쇄장치의 건조유니트에 관한 것이다.The present invention relates to a drying unit of a wet electrophotographic printing apparatus for drying a liquid carrier attached to a photosensitive belt.

일반적으로 습식 전자사진방식 인쇄장치는, 도 1에 도시된 바와 같이, 복수의 가이드롤러(10)에 의해 지지되어 무한궤도를 순환 주행하는 감광벨트(20)와, 상기 감광벨트(20)에 정전잠상을 형성하는 레이저 스캐닝 유닛(31)과, 전사할 화상을 기록하기 위해 상기 감광벨트(20)에 소정 색상의 잉크를 공급하여 상기 정전잠상을 토너화상으로 현상하는 현상유니트(30)와, 토너화상이 형성된 상기 감광벨트(20)의 전사면을 건조시키는 건조유니트(40)와, 상기 감광벨트(20)의 토너화상을 용지(1)에 전사하는 전사유니트(50) 및, 전사후 상기 감광벨트(20)에 남아 있는 정전잠상을 제거하는 리셋유니트(60)를 포함하여 구성된다.In general, a wet electrophotographic printing apparatus, as shown in FIG. 1, is supported by a plurality of guide rollers 10 and circulates in an endless track, and electrostatic on the photosensitive belt 20. A laser scanning unit 31 for forming a latent image, a developing unit 30 for supplying ink of a predetermined color to the photosensitive belt 20 for recording an image to be transferred, and developing the electrostatic latent image into a toner image; A drying unit 40 for drying the transfer surface of the photosensitive belt 20 on which the image is formed, a transfer unit 50 for transferring the toner image of the photosensitive belt 20 to the paper 1, and the photosensitive after transfer. And a reset unit 60 for removing the latent electrostatic image remaining on the belt 20.

여기서 상기 현상유니트(30)에서 공급되는 잉크는 고체상의 토너와 액상의 캐리어가 혼합된 것으로서, 이중 상기 토너가 실제로 용지에 전사되는 색상을 지니고 있으며, 상기 캐리어는 그 토너를 운반해주는 매체의 역할을 한다. 이 캐리어는 전사전에 상기 건조유니트(40)에 의해 건조되어 상기 감광벨트(20)의 전사면으로부터 제거되기 때문에, 상기 전사유니트(50)에서의 전사작업 시에는 상기 감광벨트(20)에 소정 색상을 지닌 토너만이 남게 된다.Here, the ink supplied from the developing unit 30 is a mixture of solid toner and liquid carrier, of which the toner actually has a color transferred to paper, and the carrier serves as a medium for transporting the toner. do. Since the carrier is dried by the drying unit 40 and removed from the transfer surface of the photosensitive belt 20 before the transfer, the carrier has a predetermined color in the photosensitive belt 20 during the transfer operation. Only toner with

이와 같은 건조작업을 위해, 상기 건조유니트(40)에는 열을 발생시키는 히팅롤러(42)와, 상기 감광벨트(20) 및 상기 히팅롤러(42)에 접촉되어 회전하며 상기 감광벨트(20)에 부착된 잉크 중 캐리어를 흡수하여 분리해내는 드라이롤러(41)가 구비되어 있다. 즉, 상기 드라이롤러(41)가 상기 감광벨트(20)와 접촉되어 회전하면서, 그 전사면에 부착되어 있는 잉크중 액상의 캐리어를 흡수하고, 상기 히팅롤러(42)는 드라이롤러(41)에 묻어 있는 캐리어를 건조시켜 증발시키게 된다.For such a drying operation, the drying unit 40 is heated in contact with the heating roller 42 for generating heat, the photosensitive belt 20 and the heating roller 42 is rotated to the photosensitive belt 20 The dry roller 41 which absorbs and isolate | separates a carrier among the attached ink is provided. That is, while the dry roller 41 is in contact with the photosensitive belt 20 and rotates, the dry roller 41 absorbs the carrier of the liquid in the ink attached to the transfer surface, and the heating roller 42 is connected to the dry roller 41. The buried carrier is dried and evaporated.

그런데, 인쇄작업이 반복되다 보면, 상기 드라이롤러(41)에 캐리어 뿐 아니라 고체상의 토너가 그 캐리어와 함께 소량씩 묻어나는 경우가 발생된다. 이와 같이 묻어난 토너는 드라이롤러(41) 표면에 점차 축적되고, 이 상태로 드라이롤러(41)는 감광벨트(20)와 계속 접촉하게 된다. 따라서 묻어난 토너가 다시 감광벨트(20)로 옮겨붙게 되어, 상기 전사유니트(50)에서 용지에 전사되는 화상을 오염시키는 문제점이 있다.By the way, when the printing operation is repeated, not only the carrier but also the solid toner is buried in small quantities together with the carrier in the dry roller 41. The toner thus buried gradually accumulates on the surface of the dry roller 41, and the dry roller 41 keeps in contact with the photosensitive belt 20 in this state. Therefore, the toner buried again is transferred to the photosensitive belt 20, and there is a problem of contaminating the image transferred to the paper in the transfer unit 50.

본 발명은 상기한 바와 같은 문제점을 감안하여 창출된 것으로, 드라이롤러 표면을 클리닝할 수 있도록 개선된 습식 전자사진방식 인쇄장치의 건조유니트를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a drying unit of a wet electrophotographic printing apparatus that can be improved to clean a dry roller surface.

도 1은 종래 습식 전자사진방식 인쇄장치를 개략적으로 보인 도면,1 is a view schematically showing a conventional wet electrophotographic printing apparatus;

도 2는 본 발명에 따른 건조유니트를 보인 도면,2 is a view showing a drying unit according to the present invention,

도 3은 도 2의 요부 발췌사시도.Figure 3 is a perspective view of the main portion of Figure 2 excerpt.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

100...가이드롤러 200...감광벨트100 ... guide roller 200 ... photosensitive belt

300...드라이롤러 400...히팅롤러300 ... dry roller 400 ... heating roller

500...클리닝롤러 600...노즐파이프500 ... cleaning roller 600 ... nozzle pipe

610...저장탱크 611...점착액610 storage tank 611 adhesive

620...펌프620 ... pump

상기 목적을 달성하기 위해 본 발명에 따른 습식 전자사진방식 인쇄장치의 건조유니트는, 감광벨트의 전사면과 접촉되어 회전하면서 그 전사면으로부터 토너가 함유된 액상의 캐리어를 흡수하는 드라이롤러와; 상기 드라이롤러를 가열하여 흡수된 캐리어를 증발 건조시키는 히팅롤러와; 상기 드라이롤러와 접촉되어 회전하면서 상기 드라이롤러 외주면에 잔존하는 토너를 포함한 잔류물을 클리닝하는 클리닝롤러; 및, 상기 클리닝롤러의 외주면에 점착력을 지닌 점착액을 분사하는 분사수단;을 포함하는 것을 특징으로 한다.In order to achieve the above object, the drying unit of the wet electrophotographic printing apparatus according to the present invention comprises: a dry roller for absorbing a liquid carrier containing toner from the transfer surface while rotating in contact with the transfer surface of the photosensitive belt; A heating roller heating the dry roller to evaporate and dry the absorbed carrier; A cleaning roller cleaning the residue including toner remaining on the outer circumferential surface of the dry roller while rotating in contact with the dry roller; And spraying means for spraying an adhesive liquid having an adhesive force on an outer circumferential surface of the cleaning roller.

이하, 첨부된 도면들을 참조하면서 본 발명에 따른 바람직한 실시예를 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2 및 도 3은 본 발명에 따른 습식 전자사진방식 인쇄장치의 건조유니트를 나타낸다.2 and 3 show a drying unit of the wet electrophotographic printing apparatus according to the present invention.

도시된 바와 같이 본 발명의 건조유니트는, 감광벨트(200)의 전사면과 접촉되어 회전하면서 그 전사면에 부착된 잉크 중 캐리어를 흡수하는 드라이롤러(300)와, 상기 드라이롤러(300)를 가열하여 흡수된 캐리어를 증발시키는 히팅롤러(400)와, 상기 드라이롤러(300)와 접촉되어 회전하면서 그 드라이롤러(300) 외주면에 묻어있는 토너를 클리닝하는 클리닝롤러(500) 및, 상기 클리닝롤러(500)의 외주면에 토너에 대해 점착력을 지닌 점착액(611)을 분사하는 분사수단를 포함하여 구성된다.As shown, the drying unit of the present invention comprises a dry roller 300 which absorbs a carrier from the ink attached to the transfer surface while rotating in contact with the transfer surface of the photosensitive belt 200 and the dry roller 300. A heating roller 400 for evaporating the absorbed carrier by heating, a cleaning roller 500 for cleaning the toner on the outer circumferential surface of the dry roller 300 while rotating in contact with the dry roller 300, and the cleaning roller And an injection means for injecting an adhesive liquid 611 having an adhesive force to the toner on the outer circumferential surface of 500.

그리고 상기 분사수단은 점착액(611)을 저장하는 저장탱크(610)와, 상기 저장탱크로부터 점착액(611)을 펌핑하는 펌프(620)와, 상기 펌프(620)에 의해 펌핑된 점착액을 상기 클리닝롤러(500)의 외주면으로 분사하는 노즐파이프(600)를 포함한다. 도면의 참조부호 100은 감광벨트(200)의 주행을 가이드하는 가이드롤러를 나타낸다.The injection means may include a storage tank 610 for storing the adhesive liquid 611, a pump 620 for pumping the adhesive liquid 611 from the storage tank, and an adhesive liquid pumped by the pump 620. And a nozzle pipe 600 spraying to the outer circumferential surface of the cleaning roller 500. Reference numeral 100 in the drawing represents a guide roller for guiding the travel of the photosensitive belt 200.

이와 같은 구성에 있어서, 감광벨트(200)에 부착된 잉크 즉, 고체상의 토너와 액상의 캐리어 중 상기 캐리어는, 감광벨트(200)가 상기 드라이롤러(300)와의 접촉부를 통과할 때 그 드라이롤러(300)의 외주면으로 흡수된다. 그리고 흡수된 캐리어는 상기 히팅롤러(400)에 의해 가열되어 드라이롤러(300) 외주면으로부터 증발된다. 한편, 상기 감광벨트(200)에 부착되어 있던 토너 중 일부가 캐리어와 함께 상기 드라이롤러(300)에 묻어나올 수 있는데, 이와 같이 묻어난 토너는 상기 드라이롤러(300)와 접촉 회전되는 상기 클리닝롤러(500)에 의해 닦여지게 된다. 이때 상기 클리닝롤러(500) 외주면에는 상기 노즐파이프(600)로부터 토너와의 점착력을 지닌 점착액(611)이 분사된다. 즉, 상기 펌프(620)를 가동시켜서 저장탱크(610)에 담겨있던 점착액(611)을 상기 노즐파이프(600)를 통해 클리닝롤러(500) 외주면으로 분사하게 된다. 따라서 상기 클리닝롤러(500)의 외주면은 항상 점착액이 도포된 상태를 유지하고 있기 때문에, 상기 드라이롤러(300)에 묻어 있는 토너를 효과적으로 닦아낼 수 있다. 이와 같은 점착액 분사 조작은, 소정 콘트롤러(미도시)로부터 지시를 받아서 주기적으로, 예컨대 기설정된 인쇄매수당 1회씩 수행되도록 하거나, 또는 사용자의 스위치 조작에 의해, 점착액(611)의 도포량이 부족하다고 판단되는 경우에만 분사되도록 구성할 수도 있다.In such a configuration, the ink attached to the photosensitive belt 200, that is, the carrier among the solid toner and the liquid carrier, is the dry roller when the photosensitive belt 200 passes through the contact portion with the dry roller 300. Absorbed into the outer circumferential surface of 300. The absorbed carrier is heated by the heating roller 400 and evaporated from the outer circumferential surface of the dry roller 300. On the other hand, some of the toner attached to the photosensitive belt 200 may be buried in the dry roller 300 together with a carrier, the buried toner is rotated in contact with the dry roller 300 the cleaning roller ( 500). At this time, the adhesive liquid 611 having adhesive force with the toner is injected from the nozzle pipe 600 on the outer circumferential surface of the cleaning roller 500. That is, the pump 620 is operated to spray the adhesive liquid 611 contained in the storage tank 610 to the outer circumferential surface of the cleaning roller 500 through the nozzle pipe 600. Therefore, since the outer circumferential surface of the cleaning roller 500 is always kept in a state where the adhesive liquid is applied, the toner on the dry roller 300 can be effectively wiped off. Such adhesive liquid spraying operation is performed by a predetermined controller (not shown) periodically, for example, once per predetermined number of prints, or by a user's switch operation, the coating amount of the adhesive liquid 611 is insufficient. It may also be configured to be injected only when it is determined that.

이와 같이 점착액(611)이 도포된 클리닝롤러(500)에 의해 드라이롤러(300)에 부착된 토너를 닦아냄으로써 드라이롤러(300)를 깨끗한 상태로 유지시킬 수 있는 것이다.As such, the toner attached to the dry roller 300 may be wiped off by the cleaning roller 500 coated with the adhesive liquid 611 to keep the dry roller 300 in a clean state.

상술한 바와 같이 본 발명에 따른 습식 전자사진방식 인쇄장치의 건조유니트는, 드라이롤러에 묻어있는 토너를 포함한 잔류물을 클리닝롤러가 닦아내도록 구성되어 있기 때문에, 드라이롤러 및 감광벨트의 오염을 억제하여 인쇄시 화상 오염을 방지할 수 있다.As described above, the drying unit of the wet electrophotographic printing apparatus according to the present invention is configured so that the cleaning roller wipes off the residue including the toner from the dry roller, thereby suppressing the contamination of the dry roller and the photosensitive belt. Image contamination can be prevented during printing.

본 발명은 상기에 설명되고 도면에 예시된 것에 의해 한정되는 것은 아니며, 다음에 기재되는 청구의 범위 내에서 더 많은 변형 및 변용예가 가능한 것임은 물론이다.It is to be understood that the invention is not limited to that described above and illustrated in the drawings, and that more modifications and variations are possible within the scope of the following claims.

Claims (1)

감광벨트의 전사면과 접촉되어 회전하면서 그 전사면으로부터 토너가 함유된 액상의 캐리어를 흡수하는 드라이롤러와;A dry roller which contacts and rotates the transfer surface of the photosensitive belt and absorbs the liquid carrier containing toner from the transfer surface; 상기 드라이롤러를 가열하여 흡수된 캐리어를 증발 건조시키는 히팅롤러와;A heating roller heating the dry roller to evaporate and dry the absorbed carrier; 상기 드라이롤러와 접촉되어 회전하면서 상기 드라이롤러 외주면에 잔존하는 토너를 포함한 잔류물을 클리닝하는 클리닝롤러; 및,A cleaning roller cleaning the residue including toner remaining on the outer circumferential surface of the dry roller while rotating in contact with the dry roller; And, 점착액이 저장된 저장탱크와, 상기 저장탱크로부터 점착액을 펌핑하는 펌프와, 상기 펌프에 의해 펌핑된 점착액을 상기 클리닝롤러의 외주면으로 분사하는 노즐파이프를 구비하는 분사수단;을 포함하는 것을 특징으로 하는 습식 전자사진방식 인쇄장치의 건조유니트.And a spraying means including a storage tank in which the adhesive liquid is stored, a pump for pumping the adhesive liquid from the storage tank, and a nozzle pipe for spraying the adhesive liquid pumped by the pump to the outer circumferential surface of the cleaning roller. Drying unit for wet electrophotographic printing apparatus.
KR1019970054867A 1997-10-24 1997-10-24 Drying unit for wet type electrophotographic printing apparatus KR100261088B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970054867A KR100261088B1 (en) 1997-10-24 1997-10-24 Drying unit for wet type electrophotographic printing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970054867A KR100261088B1 (en) 1997-10-24 1997-10-24 Drying unit for wet type electrophotographic printing apparatus

Publications (2)

Publication Number Publication Date
KR19990033498A KR19990033498A (en) 1999-05-15
KR100261088B1 true KR100261088B1 (en) 2000-07-01

Family

ID=19523366

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970054867A KR100261088B1 (en) 1997-10-24 1997-10-24 Drying unit for wet type electrophotographic printing apparatus

Country Status (1)

Country Link
KR (1) KR100261088B1 (en)

Also Published As

Publication number Publication date
KR19990033498A (en) 1999-05-15

Similar Documents

Publication Publication Date Title
US6947700B2 (en) Fixing apparatus and image forming apparatus
US6442363B2 (en) Liquid electrophotographic printing apparatus and method wherein liquid carrier absorption and discharge between rollers and photosensitive medium can reach equilibruim
KR100395603B1 (en) Cleaning mechanism for image forming apparatus
KR100261088B1 (en) Drying unit for wet type electrophotographic printing apparatus
US6186066B1 (en) Roller cleaning apparatus for liquid printer
JP2869061B1 (en) Photosensitive belt cleaning device for wet electrophotographic printer
US5963768A (en) Toner remixing developing unit
JP2008065190A (en) Fixing device and image forming apparatus
KR100224872B1 (en) Drying unit for liquid electrophotographic printer
KR20000055458A (en) Developer liquid squeegee apparatus for a liquid electrographic imaging system
US6597880B2 (en) Apparatus for preventing ink in a wet electrophotographic printer from polluting a roller mounted therein
KR100385986B1 (en) OPR-belt cleaning apparatus for liquid electro photographic printer
KR200147794Y1 (en) Development apparatus for liquid electrographic imaging system
CA2243773C (en) Fixing device provided in an image forming device
JP3535400B2 (en) Electrophotographic equipment
KR100230328B1 (en) Development apparatus for an image forming apparatus
KR100385985B1 (en) A photosensitive media cleaning apparatus for printing device
KR20000051624A (en) OPR-belt cleaning apparatus for printer
KR200321605Y1 (en) Photosensitive belt cleaning device for wet electrophotographic printer
KR20000039258A (en) Carrier removing device for wet type printer
KR100243237B1 (en) Development apparatus in electrographic printer
KR100230321B1 (en) Image developing apparatus for electrophotographic printer
KR20030027621A (en) a wet electrophotograph type printer having apparatus for cleaning intermediate transfer member
JPH1010874A (en) Wet system image forming device
KR100322557B1 (en) Ink circulating system for wet type electrophotographic printer

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070329

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee