WO2012023946A1 - Fluid delivery system and method thereof - Google Patents
Fluid delivery system and method thereof Download PDFInfo
- Publication number
- WO2012023946A1 WO2012023946A1 PCT/US2010/046169 US2010046169W WO2012023946A1 WO 2012023946 A1 WO2012023946 A1 WO 2012023946A1 US 2010046169 W US2010046169 W US 2010046169W WO 2012023946 A1 WO2012023946 A1 WO 2012023946A1
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- WIPO (PCT)
- Prior art keywords
- fluid
- charge
- unit
- chamber
- directors
- Prior art date
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
- B41J2/185—Ink-collectors; Ink-catchers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
- G03G15/104—Preparing, mixing, transporting or dispensing developer
Definitions
- Fluid delivery systems for image forming apparatuses such as liquid electrophotography printing apparatuses include providing liquid toner to fluid applicators. Subsequently, the fluid applicators provide the charged liquid toner to an image transfer member that receives images formed by the image forming apparatuses and transfer the images onto substrates such as print media. Generally, the liquid toner includes charge directors to electrically charge the liquid toner.
- FIG. 1 is a schematic view illustrating a fluid delivery system in communication with an exemplary liquid electrophotography printing apparatus according to an example of the present disclosure.
- FIG. 2A is a block diagram illustrating a fluid delivery system according to an example of the present disclosure.
- FIG. 2B is a partial side view illustrating the fluid delivery system of FIG. 2A according to an example of the present disclosure.
- FIGS. 3A and 3B are perspective views of charge reducing units of the fluid delivery system of FIG. 2B according to examples of the present disclosure.
- FIG. 4A is a block diagram illustrating a fluid delivery system of FIG. 2A according to an example of the present disclosure.
- FIG. 4B is a partial side view illustrating the fluid delivery system of FIG. 4A according to an example of the present disclosure.
- FIG. 5 is a flowchart illustrating a method of controlling a charge level of fluid in a fluid chamber of a fluid delivery system according to an example of the present disclosure.
- Fluid delivery systems for image forming apparatuses such as liquid electrophotography printing apparatuses provide charged liquid toner including charge directors and a carrier fluid to fluid applicators such as binary ink developers (BIDs) of the liquid electrophotography apparatuses.
- a fluid chamber receives each of the charge directors and carrier fluid forming the charged liquid toner and subsequently provides the charged liquid toner to a respective BID.
- the BID provides the charged liquid toner to a latent image on a photo imaging member, which in turn provides the image to an image transfer member such as an image transfer blanket.
- the image transfer blanket transfers the image onto a substrate such as print media.
- the fluid delivery system may include multiple fluid chambers in fluid communication with corresponding BIDS in which each fluid chamber with its corresponding BID may correspond to a different color fluid to enable color printing.
- a charge level of the liquid toner in the fluid chamber may change in a manner in which the charge level is no longer within a range recommended, for example, for the liquid toner to be sufficiently transferred to and from the intermediate transfer member.
- the charge level may rise above the recommended range due to, for example, an accumulation of charge directors on the photo imaging member as a result of periodic cleaning processes thereof, an accumulation of charge directors remaining in fluid chamber, and/or printing side effects such as electrical fatigue.
- Such a rise in charge level may contribute to printing defects resulting in printed images of an inferior image quality.
- a fluid delivery system is disclosed to prevent inferior quality images from being printed and stabilize optical density.
- a fluid delivery system is disclosed to maintain the charge level of the fluid in the fluid chamber within a predetermined range, for example, by changing a concentration of an amount of charge directors in the fluid.
- a charge reducing unit is configured to decrease the charge level of the fluid of the fluid chamber and a charge increasing unit is configured to increase the charge level of the fluid based on based on a detection of at least one fluid parameter corresponding to the charge level of the fluid of the fluid chamber.
- FIG. 1 is a schematic view illustrating a fluid delivery system in communication with an exemplary liquid electrophotography printing apparatus according to an example of the present disclosure.
- a fluid deliver system 100 is usable with an image forming apparatus such as a liquid electrophotography printing apparatus (LEP) 1 10.
- the LEP 1 10 includes an image forming unit 120 that receives a substrate S such as a print media from an input unit 140 and outputs the substrate S to an output unit 160.
- the image forming unit 120 includes a photo imaging member (PIP) 180 that defines an outer surface on which images can be formed.
- the outer surface may be charged with a suitable charger (not illustrated), such as a charge roller, and portions of the outer surface that correspond to features of the image can be selectively discharged by a laser writing unit 1 19 to form an electrostatic image on the outer surface.
- a suitable charger not illustrated
- portions of the outer surface that correspond to features of the image can be selectively discharged by a laser writing unit 1 19 to form an electrostatic image on the outer surface.
- a fluid delivery system 100 may supply fluid such as liquid toner, for example, Electrolnk, trademarked by Hewlett- Packard Company, to fluid development units of the LEP 1 10 such as BIDs 130.
- the BIDs 130 apply the fluid to the electrostatic image to form a fluid image on the outer surface of the PIP 180 to be transferred to an intermediate transfer member (ITM) 150.
- ITM intermediate transfer member
- the STM 150 is configured to receive the fluid image from the PIP 180, heat the image, and transfer the image to the substrate S. During the transfer from the ITM 150 to the substrate S, the substrate S is pinched between the ITM 150 and an impression member 190. Once the fluid image has been transferred to the substrate S, the substrate S can be transported to the output unit 160.
- FIG. 2A is a block diagram illustrating a fluid delivery system according to an example of the present disclosure.
- a fluid delivery system 100 includes a fluid chamber 1 1 1 , a charge reducing unit 1 12, and a charge control unit 1 13.
- the fluid delivery system 100 may be disposed within the image forming apparatus 1 10.
- the fluid delivery system 100 may be external to the image forming apparatus 1 10.
- the fluid chamber 1 1 1 is configured to store fluid having at least charge directors and a carrier liquid.
- the fluid chamber 1 1 1 may be a reservoir, ink tank, or the like.
- the fluid may also be supplied to a LEP 1 10 to print images on a substrate S (FIGS.
- the charge reducing unit 1 12 is in fluid communication with the fluid chamber 1 1 1 .
- the charge reducing unit 1 12 is configured to decrease a charge level of the fluid of the fluid chamber 1 1 1 .
- the charge control unit 1 13 is in communication with the fluid chamber 1 1 1 and is configured to control the charge level of the fluid based on a detection of at least one fluid parameter corresponding to the charge level of the fluid of the fluid chamber 1 1 1 .
- the charge reducing unit 1 12 reduces a concentration of an amount of the charge directors in the fluid of the fluid chamber 1 1 1 .
- the charge directors that is, charge control agents, may include one or more of lecithin, barium sulfocuccinate, or the like.
- FIG. 2B is a partial side view illustrating the fluid delivery system of FIG. 2A according to an example of the present disclosure.
- the charge reducing unit 1 12 includes a filter unit 1 12a configured to remove charge directors from the fluid by adsorbtion with the fluid f p entering the filter unit 1 12a to form a filtered fluid f f , and provide the filtered fluid f f to the fluid chamber 1 1 1 .
- the charge control unit 1 13 includes a fluid parameter detector 1 13a configured to detect the at least one fluid parameter corresponding to the charge level of the fluid.
- the at least one fluid parameter may be conductivity.
- the charge control unit 1 13 may also include a selector unit 1 13b configured to place the charge reducing unit 1 12 such as the filter unit 1 12a in or out of fluid communication with the fluid chamber 1 1 1 based on the detection of the at least one fluid parameter such as the conductivity of the fluid.
- a selector unit 1 13b configured to place the charge reducing unit 1 12 such as the filter unit 1 12a in or out of fluid communication with the fluid chamber 1 1 1 based on the detection of the at least one fluid parameter such as the conductivity of the fluid.
- a predetermined range for the conductivity may be 70 to 1 10 picoseimens per centimeter (pS/cm).
- the selector unit 1 13b may place the filter unit 1 12a in fluid
- the selector unit 1 13b may open an automated control valve 1 13c, or the like, disposed between the filter unit 1 12a and the fluid chamber 1 1 1 to enable the filter unit 1 12a to remove the charge directors from the fluid passing therethrough.
- the fluid parameter detector 1 13a may be a conductivity sensor disposed on the fluid chamber 1 1 1 .
- the fluid chamber 1 1 1 may further include a pump (not illustrated), additional sensors (not illustrated) such as a density sensor, level sensor and temperature sensor, and a fluid temperature controller such as a heater a cooler. As illustrated in FIG.
- the fluid delivery system 100 may also include an ink tank 21 1 configured to receive fluid from the fluid chamber 1 1 1 and toner concentrate 1 15a (FIG. 4B) to form a printing fluid.
- the ink tank 21 1 may also be in fluid communication with the LEP 1 10, to provide the printing fluid to a respective BID 130 (FIG. 1 ) of the LEP 1 10 to print images therewith.
- FIGS. 3A and 3B are perspective views of charge reducing units of the fluid delivery system of FIG. 2B according to examples of the present disclosure.
- the filter unit 1 12a may include at least one of silica gel 310 (FIG. 3A) and a mono-directional membrane 350 (FIG. 3B).
- the filter unit 1 12a may include a silica gel 310 and a housing unit 312 to store the silica gel 310.
- the housing unit 312 may include a removable portion 314 in which the silica gel 310 can be removably stored, and a stationary portion 316 having an inlet 316a and outlet 316b in fluid communication with the removable portion 314 and the silica gel 310 stored therein.
- the silica gel 310 may be replaced as needed.
- the fluid f p from the fluid chamber 1 1 1 enters the inlet 316a of the stationary portion 316 of the filter unit 1 12a. Subsequently, the fluid f p flows into the removable portion 314 of the filter unit 1 12a and comes in contact with the silica gel 310.
- the silica gel 310 filters the fluid by attracting to its surface solids such as charge directors.
- the filtered fluid f f having a reduced amount and/or no charge directors therein flows out of the outlet 316b of the stationary portion 316 of the filter unit 1 12a, and into the fluid chamber 1 1 1 .
- the filtered fluid ff mixes together with the rest of the fluid therein resulting in a reduction of the concentration of the amount of charge directors in the fluid stored in the fluid chamber 1 1 1 .
- the housing unit 312 may include a mono- directional membrane 350 stored therein in which the mono-directional membrane 350 and/or the housing unit 312, or a portion thereof, is replaceable as illustrated in FIG. 3B.
- the fluid f p from the fluid chamber 1 1 1 is directed through the mono-directional membrane 350 in order to remove charge directors therefrom resulting in the filtered fluid f f .
- the filtered fluid f f having a lower concentration of the amount of the charge directors than the fluid in the fluid chamber 1 1 1 is directed into the fluid chamber 1 1 1 .
- FIG. 4A is a block diagram illustrating a fluid delivery system of FIG. 2A according to an example of the present disclosure.
- a fluid delivery system 100 includes a fluid chamber 1 1 1 , a charge reducing unit 1 12, a charge increasing unit 1 14, and a charge control unit 1 13.
- the fluid chamber 1 1 1 is configured to store fluid having at least charge directors and a carrier liquid.
- the charge reducing unit 1 12 is in fluid communication with the fluid chamber 1 1 1 .
- the charge reducing unit 1 12 is configured to decrease a charge level of the fluid of the fluid chamber 1 1 1 .
- the charge reducing unit 1 12 reduces a concentration of an amount of the charge directors in the fluid of the fluid chamber 1 1 1 .
- the charge control unit 1 13 is in communication with the fluid chamber 1 1 1 , the charge reducing unit 1 12, and the charge increasing unit 1 14.
- the charge increasing unit 1 14 of the fluid delivery system 100 is in fluid communication with the fluid chamber 1 1 1 and in communication with the charge control unit 1 13.
- the charge increasing unit 1 14 is configured to increase the charge level of the fluid of the fluid chamber 1 1 1 .
- the charge increasing unit 1 14 increases a concentration of the amount of the charge directors in the fluid of the fluid chamber 1 1 1 .
- the charge increasing unit 1 14 may provide a supplemental fluid 1 14a (FIG. 4B) to the fluid of the fluid chamber 1 1 1 1 such that the concentration of the amount of charge directors of the
- the charge increasing unit 1 14 may include the suppiementai fluid 1 14a and a suppiementai fluid receptacle 1 14b configured to removable receive the supplemental fluid 1 14a as illustrated in FIG. 4B.
- the supplemental fluid 1 14a may be primarily imaging oil such as ISOPAR, trademarked by Exxon Corporation, having a charge director compound dispersed therein, a toner concentrate 1 15a having charge directors and toner particles mixed therein, and/or primarily a charge director compound 1 16a in a solution.
- the suppiementai fluid 1 14a may be replaced as needed.
- the charge control unit 1 13 is in communication with the fluid chamber 1 1 1 , the charge reducing unit 1 12 and the charge increasing unit 1 14.
- the charge control unit 1 13 is configured to control the charge level of the fluid based on a detection of at least one fluid parameter corresponding to the charge level of the fluid of the fiuid chamber 1 1 1 .
- FIG. 4B is a partial side view illustrating the fluid delivery system of FIG. 4A according to an example of the present disclosure. Referring to FIGS.
- the charge reducing unit 1 12 includes a filter unit 1 12a configured to remove charge directors from the fluid by adsorbtion with the fiuid f p entering the filter unit 1 12a to form a filtered fluid f, having a lower concentration of an amount of charge directors than the fluid in the fiuid chamber 1 1 1 , Subsequently, the filtered fiuid ft is directed from the filter unit 1 12a to the fiuid chamber 1 1 1 , As illustrated in FIG. 4B, the charge control unit 1 13 includes a fluid parameter detector 1 13a configured to detect the at least one fluid parameter such as conductivity corresponding to the charge level of the fluid.
- the charge control unit 1 13 may also include a selector unit 1 13b configured to place the charge reducing unit 1 12 such as the filter unit 1 12a and the charge increasing unit 1 14 such as the supplemental fluid 1 14a in or out of fluid communication with the fluid chamber 1 1 1 based on the detection of the at least one fluid parameter.
- the selector unit 1 13b may place the fluid chamber 1 1 1 in fiuid communication with the supplemental fluid 1 14a having a higher concentration of the amount of the charge directors than the fluid in the fluid chamber 1 1 1 to mix with the fluid therein.
- the selector unit 1 13b may open an automatic control valve 1 13d, or the like, disposed between the supplemental fluid 1 14a and the fiuid chamber 1 1 1 ,
- the supplemental fluid 1 14a may be primarily imaging oil such as ISOPAR having a charge director compound dispersed therein, a toner concentrate 1 15a having charge directors and toner particles mixed therein, and/or primarily a charge director compound 1 18a in solution.
- the supplemental fluid 1 14a Includes the Imaging oil having a concentration of an amount of charge directors of approximately 0.075%.
- the fluid delivery system 100 may also include an ink tank 21 1 configured to receive fluid from the fluid chamber 1 1 1 and toner concentrate 1 15a to form a printing fluid.
- the ink tank 21 1 may also be in fluid communication with the LEP 1 10, to provide the printing fluid to a respective BSD 130 (FIG. 1 ⁇ of the LEP 1 10 to print images therewith.
- the fluid delivery system 100 may include other fluid receptacles 1 15b in addition to the supplemental fluid receptacle 1 14b to receivable mount, for example, the toner concentrate 1 15a.
- the toner concentrate 1 15a supplies color pigments to the fluid to correspond with a desired color.
- the toner concentrate 1 15a may include 21 .5% solids.
- the selector unit 1 13b may additionally place the filter unit 1 12a out of fluid communication with the fluid chamber 1 1 1 in response to the detection of the conductivity below 70 pS/cm.
- the selector unit 1 13b may close an automated control valve 1 13c, or the like, disposed between the fluid chamber 1 1 1 and the charge reducing unit 1 12.
- the selector unit 1 13b may select the charge reducing unit 1 12 to be in fluid communication with the fluid chamber 1 1 1 when the conductivity is greater than 1 10 pS/cm, and select the charge increasing unit 1 14 to be in fluid communication with the fluid chamber 1 1 1 when the conductivity is less than 70 pS/cm.
- the fluid chamber 1 1 1 of the fluid delivery system 100 may also be in fluid communication with the LEP 1 10, for example, through the ink tank 21 1 , to provide the fluid to a respective the BID 130 (FIG. 1 )-
- FIG. 5 is a flowchart illustrating a method of controlling a charge level of fluid in a fluid chamber of a fluid delivery system 100 according to an example of the present disclosure.
- at least one fluid parameter corresponding to a charge level of a fluid having at least charge directors and carrier liquid in a fluid chamber is detected.
- the at least one parameter may be conductivity and a predetermined range of the conductivity of the fluid may be in a range of 70 pS/cm to 1 10 pS/cm.
- the charge level of the fluid in the fluid container is controlled by changing a concentration of an amount of the charge directors in the fluid based on the detected fluid parameter.
- a charge control unit may control the charge level of the fluid by selecting at least one of a charge reducing unit and a charge increasing unit to be in fluid communication with the fluid chamber based on the detected at least one fluid parameter of the fluid.
- the charge reducing unit may reduce the concentration of the amount of the charge directors in the fluid and the charge increasing unit may increase the concentration of the amount of the charge directors in the fluid.
- the charge control unit may select the charge reducing unit when the detected fluid parameter is greater than 1 10 pS/cm and may select the charge increasing unit when the detected fluid parameter is less than 70 pS/cm.
- the concentration of the amount of the charge directors in the fluid may be reduced by a filter unit removing respective charge directors from the fluid by adsorbtion.
- the filter unit 1 12a may include at least one of a silica gel and a mono-directional membrane (FIGS. 3A and 3B).
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- Wet Developing In Electrophotography (AREA)
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Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080068676.4A CN103052509B (en) | 2010-08-20 | 2010-08-20 | Fluid delivery system and method thereof |
BR112013003824A BR112013003824A2 (en) | 2010-08-20 | 2010-08-20 | fluid delivery system and method for controlling a fluid charge level |
PCT/US2010/046169 WO2012023946A1 (en) | 2010-08-20 | 2010-08-20 | Fluid delivery system and method thereof |
US13/816,467 US8983321B2 (en) | 2010-08-20 | 2010-08-20 | Fluid delivery system and method thereof |
EP10856244.8A EP2605914B1 (en) | 2010-08-20 | 2010-08-20 | Fluid delivery system and method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2010/046169 WO2012023946A1 (en) | 2010-08-20 | 2010-08-20 | Fluid delivery system and method thereof |
Publications (1)
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WO2012023946A1 true WO2012023946A1 (en) | 2012-02-23 |
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ID=45605375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2010/046169 WO2012023946A1 (en) | 2010-08-20 | 2010-08-20 | Fluid delivery system and method thereof |
Country Status (5)
Country | Link |
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US (1) | US8983321B2 (en) |
EP (1) | EP2605914B1 (en) |
CN (1) | CN103052509B (en) |
BR (1) | BR112013003824A2 (en) |
WO (1) | WO2012023946A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7066406B2 (en) * | 2017-12-28 | 2022-05-13 | キヤノン株式会社 | Recording device, recording method, and program |
JP6992193B2 (en) * | 2018-03-12 | 2022-01-13 | ヒューレット-パッカード デベロップメント カンパニー エル.ピー. | Measurement of fluid actuator when no nucleus is generated |
WO2021211101A1 (en) * | 2020-04-14 | 2021-10-21 | Hewlett-Packard Development Company, L.P. | Force adjustment arrangement |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US4860924A (en) * | 1986-02-14 | 1989-08-29 | Savin Corporation | Liquid developer charge director control |
US5003352A (en) * | 1989-10-24 | 1991-03-26 | Am International, Inc. | Liquid toner supply system and method |
US5231454A (en) * | 1989-05-15 | 1993-07-27 | Spectrum Sciences B.V. | Charge director replenishment system and method for a liquid toner developing apparatus |
US5278615A (en) * | 1990-07-23 | 1994-01-11 | Spectrum Sciences B.V. | Liquid toner imaging system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0915982A (en) * | 1995-06-28 | 1997-01-17 | Minolta Co Ltd | Monitoring device for physical property of liquid |
JPH1165295A (en) * | 1997-08-15 | 1999-03-05 | Minolta Co Ltd | Image forming device |
US7343121B2 (en) * | 2005-12-21 | 2008-03-11 | Eastman Kodak Company | Addition of liquid charge control agents to toner in toner development stations of electrographic reproduction apparatus |
JP5240541B2 (en) * | 2007-02-26 | 2013-07-17 | 株式会社リコー | Image forming apparatus |
-
2010
- 2010-08-20 US US13/816,467 patent/US8983321B2/en active Active
- 2010-08-20 BR BR112013003824A patent/BR112013003824A2/en active Search and Examination
- 2010-08-20 CN CN201080068676.4A patent/CN103052509B/en active Active
- 2010-08-20 WO PCT/US2010/046169 patent/WO2012023946A1/en active Application Filing
- 2010-08-20 EP EP10856244.8A patent/EP2605914B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4860924A (en) * | 1986-02-14 | 1989-08-29 | Savin Corporation | Liquid developer charge director control |
US5231454A (en) * | 1989-05-15 | 1993-07-27 | Spectrum Sciences B.V. | Charge director replenishment system and method for a liquid toner developing apparatus |
US5003352A (en) * | 1989-10-24 | 1991-03-26 | Am International, Inc. | Liquid toner supply system and method |
US5278615A (en) * | 1990-07-23 | 1994-01-11 | Spectrum Sciences B.V. | Liquid toner imaging system |
Also Published As
Publication number | Publication date |
---|---|
US8983321B2 (en) | 2015-03-17 |
CN103052509A (en) | 2013-04-17 |
US20130148989A1 (en) | 2013-06-13 |
EP2605914A4 (en) | 2017-04-26 |
CN103052509B (en) | 2015-04-22 |
EP2605914B1 (en) | 2018-02-21 |
EP2605914A1 (en) | 2013-06-26 |
BR112013003824A2 (en) | 2016-06-28 |
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