EP0784809B1 - Imaging apparatus and intermediate transfer blanket therefor - Google Patents

Imaging apparatus and intermediate transfer blanket therefor Download PDF

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Publication number
EP0784809B1
EP0784809B1 EP95920290A EP95920290A EP0784809B1 EP 0784809 B1 EP0784809 B1 EP 0784809B1 EP 95920290 A EP95920290 A EP 95920290A EP 95920290 A EP95920290 A EP 95920290A EP 0784809 B1 EP0784809 B1 EP 0784809B1
Authority
EP
European Patent Office
Prior art keywords
transfer
layer
intermediate transfer
drum
blanket
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
EP95920290A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0784809A1 (en
Inventor
Alon Gazit
David Idan
Hanni Inbar
Ilan Kander
Eli Kritchman
Benzion Landa
Amiran Lavon
Moshe Levanon
Ishaiau Lior
Jan Van Mil
Yehuda Niv
Avner Schneider
Aron Shmaiser
Hani Younes
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.)
HP Indigo BV
Original Assignee
Indigo BV
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
Priority claimed from IL11184694A external-priority patent/IL111846A0/xx
Priority claimed from IL11184794A external-priority patent/IL111847A0/xx
Application filed by Indigo BV filed Critical Indigo BV
Priority to EP01204163A priority Critical patent/EP1179757B1/en
Priority to EP01204162A priority patent/EP1178366B1/en
Publication of EP0784809A1 publication Critical patent/EP0784809A1/en
Application granted granted Critical
Publication of EP0784809B1 publication Critical patent/EP0784809B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • 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
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
    • G03G15/162—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support details of the the intermediate support, e.g. chemical composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/70—Forming the printing surface directly on the form cylinder

Definitions

  • the present invention relates to image forming and image transfer apparatus especially for use in electrostatic imaging using an intermediate transfer blanket.
  • intermediate transfer members and members including transfer blankets for offset ink printing are also well known.
  • Such blankets have characteristics which are suitable for ink transfer but are generally not usable, per se, for liquid toner imaging.
  • the present invention seeks to provide, in one aspect thereof, improved image transfer apparatus using an improved intermediate transfer member.
  • the present invention further seeks to provide, in a second aspect thereof, an improved image transfer member for use in imaging apparatus, especially in image forming apparatus using electrostatically charged toner.
  • the present invention further seeks to provide, in a third aspect thereof, an improved image transfer blanket for use as part of the image transfer member in imaging apparatus, especially in image forming apparatus using electrostatically charged toner.
  • imaging apparatus according to claim 1 and to dependent claims and claim 31 and an intermediate image transfer blanket according to claim 9 and its dependent claims.
  • FIGs. 1 and 2 illustrate a multicolor electrostatic imaging system constructed and operative in accordance with a preferred embodiment of the present invention.
  • an imaging sheet preferably an organic photoreceptor 12, typically mounted on a rotating drum 10.
  • Drum 10 is rotated about its axis by a motor or the like (not shown), in the direction of arrow 18, past charging apparatus 14, preferably a corotron, scorotron or roller charger or other suitable charging apparatus known in the art and which is adapted to charge the surface of sheet photoreceptor 12.
  • the image to be reproduced is focused by an imager 16 upon the charged surface 12 at least partially discharging the photoconductor in the areas struck by light, thereby forming the electrostatic latent image.
  • the latent image normally includes image areas at a first electrical potential and background areas at another electrical potential.
  • Photoreceptor sheet 12 may use any suitable arrangement of layers of materials as is known in the art, however, in the preferred embodiment of the photoreceptor sheet, certain of the layers are removed from the ends of the sheet to facilitate its mounting on drum 10.
  • photoreceptor 12 may be deposited on the drum 10 and may form a continuous surface.
  • photoreceptor 12 may be a non-organic type photoconductor based, for example, on a compound of Selenium.
  • Imaging apparatus 16 may be a modulated laser beam scanning apparatus, an optical focusing device for imaging a copy on a drum or other imaging apparatus such as is known in the art.
  • drum 10 and photoreceptor sheet 12 are also associated with drum 10 and photoreceptor sheet 12, in the preferred embodiment of the invention, are a multicolor liquid developer spray assembly 20, a developing assembly 22, color specific cleaning blade assemblies 34, a background cleaning station 24, an electrified squeegee 26, a background discharge device 28, an intermediate transfer member 30, cleaning apparatus 32, and, optionally, a neutralizing lamp assembly 36.
  • Developing assembly 22 preferably includes a development roller 38.
  • Development roller 38 is preferably spaced from photoreceptor 12 thereby forming a gap therebetween of typically 40 to 150 micrometers and is charged to an electrical potential intermediate that of the image and background areas of the image.
  • Development roller 38 is thus operative, when maintained at a suitable voltage, to apply an electric field to aid development of the latent electrostatic image.
  • Development roller 38 typically rotates in the same sense as drum 10 as indicated by arrow 40. This rotation provides for the surface of sheet 12 and development roller 38 to have opposite velocities at the gap between them.
  • Multicolor liquid developer spray assembly 20 may be mounted on axis 42 to allow assembly 20 to be pivoted in such a manner that a spray of liquid toner containing electrically charged pigmented toner particles can be directed either onto a portion of the development roller 38, a portion of the photoreceptor 12 or directly into a development region 44 between photoreceptor 12 and development roller 38.
  • assembly 20 may be fixed.
  • the spray is directed onto a portion of the development roller 38.
  • Color specific cleaning blade assemblies 34 are operatively associated with developer roller 38 for separate removal of residual amounts of each colored toner remaining thereon after development. Each of blade assemblies 34 is selectably brought into operative association with developer roller 38 only when toner of a color corresponding thereto is supplied to development region 44 by spray assembly 20.
  • the construction and operation of cleaning blade assemblies is described in PCT Publication WO 90/14619 and in US patent 5,289,238.
  • Each cleaning blade assembly 34 includes a toner directing member 52 which serves to direct the toner removed by the cleaning blade assemblies 34 from the developer roller 38 to separate collection containers 54, 56, 58, and 60, for each color to prevent contamination of the various developers by mixing of the colors.
  • the toner collected by the collection containers is recycled to a corresponding toner reservoir (55, 57, 59 and 61).
  • a final toner directing member 62 always engages the developer roller 38 and the toner collected thereat is supplied into collection container 64 and thereafter to reservoir 65 via separator 66 which is operative to separate relatively clean carrier liquid from the various colored toner particles.
  • the separator 66 may be typically of the type described in U.S. Patent 4,985,732.
  • a background cleaning station 24 typically including a reverse roller 46 and a fluid spray apparatus 48 is provided.
  • Reverse roller 46 which rotates in a direction indicated by arrow 50 is electrically biased to a potential intermediate that of the image and background areas of photoconductive drum 10, but different from that of the development roller.
  • Reverse roller 46 is preferably spaced apart from photoreceptor sheet 12 thereby forming a gap therebetween which is typically 40 to 150 micrometers.
  • Fluid spray apparatus 48 receives liquid toner from reservoir 65 via conduit 88 and operates to provide a supply of preferably non-pigmented carrier liquid to the gap between sheet 12 and reverse roller 46.
  • the liquid supplied by fluid spray apparatus 48 replaces the liquid removed from drum 10 by development assembly 22 thus allowing the reverse roller 46 to remove charged pigmented toner particles by electrophoresis from the background areas of the latent image.
  • Excess fluid is removed from reverse roller 46 by a liquid directing member 70 which continuously engages reverse roller 46 to collect excess liquid containing toner particles of various colors which is in turn supplied to reservoir 65 via a collection container 64 and separator 66.
  • the apparatus embodied in reference numerals 46, 48, 50 and 70 is not required for low speed systems, but is preferably included in high speed systems.
  • an electrically biased squeegee roller 26 is urged against the surface of sheet 12 and is operative to remove liquid carrier from the background regions and to compact the image and remove liquid carrier therefrom in the image regions.
  • Squeegee roller 26 is preferably formed of resilient slightly conductive polymeric material as is well known in the art, and is preferably charged to a potential of several hundred to a few thousand volts with the same polarity as the polarity of the charge on the toner particles.
  • the squeegee roller is made by molding a soft polyurethane rubber coating onto a metal core, coating the molded core with a conductive lacquer and coating the lacquer with a low conductivity elastomer.
  • the molded coating can be made of an elastomer with a controlled conductivity and the lacquer can be omitted.
  • a single coating of controlled conductivity elastomer is used and the outer layer is omitted.
  • the metal core is cleaned, and coated with a rubber to metal adhesive, such as, for example CILBOND 49 SF (Compounding Ingredients Limited, UK) dissolved in an equal amount of methyl ethyl ketone, which is dried at 110°C for one hour.
  • a rubber to metal adhesive such as, for example CILBOND 49 SF (Compounding Ingredients Limited, UK) dissolved in an equal amount of methyl ethyl ketone, which is dried at 110°C for one hour.
  • An outer mold having a diameter about 9.5 mm greater than that of the core is dip coated with a release agent, such as, for example, a mixture of 10 parts Syl-Off 7600 (Dow Corning), 1 part Syl-Off 7601 and 150 parts n-hexane which is then cured for one hour at 110°C.
  • the space between the core and the mold (preheated to 70-80°C) is filled with polyurethane rubber for casting (CIL A 20, Compounding Ingredients Limited, UK) which is preheated under vacuum at 80°C for 16 hours and then at 120°C for an additional hour.
  • the polyurethane is cured at 135°C for 8 hours.
  • the cast material is ground to size to approximately ⁇ 5 micrometers.
  • the preferred hardness of the coating is about 20 Shore A, although this hardness may vary from 15-40 Shore A depending on the amount of liquid removal desired.
  • the ground surface is cleaned with acetone and preferably dip coated with a conductive lacquer (preferably, 3 parts H322 (Lord Corporation, USA) and 1 part ethyl acetate) which has been prefiltered through a lint free cloth to give a thickness (after drying) of about 30 micrometers.
  • a conductive lacquer preferably, 3 parts H322 (Lord Corporation, USA) and 1 part ethyl acetate
  • the coated squeegee is dried at room temperature and cured at 140°C for 2 hours.
  • the preferred hardness of the material forming the outer layer is about 30-35 Shore A and this hardness can be controlled by changing the proportion of MDI in the coating.
  • the coating has a resistivity in the range of 10 8 to 10 10 ohm-cm, with a preferred value of 1-3x10 8 to 2-3x10 9 ohm-cm.
  • the cast covering for the core is preferably an elastomer having the proper combination of hardness (15-30 Shore A, preferably 20 Shore A) and resistivity (1-10x10 6 ohm-cm).
  • This material can be polyurethane, nitrile or other oil resistant rubber. Polyurethane with selectable resistivity and hardness is available from Merthane Products (USA).
  • the coating is ground to size and finish and coated with a top layer which is made in the same manner as the top layer of the first embodiment.
  • the top layer is omitted and the conductive elastomer is preferably cast to exact size.
  • Discharge device 28 is operative to flood the sheet 12 with light which discharges the voltage remaining on sheet 12, mainly to reduce electrical breakdown and improve transfer of the image to intermediate transfer member 30. Operation of such a device in a write black system is described in U.S. Patent 5,280,326.
  • Figs. 1 and 2 further show that multicolor toner spray assembly 20 receives separate supplies of colored toner typically from four different reservoirs 55, 57, 59 and 61.
  • Figure 1 shows four different colored toner reservoirs 55, 57, 59 and 61 typically containing the colors Yellow, Magenta, Cyan and, optionally, Black respectively.
  • Pumps 90, 92, 94 and 96 may be provided along respective supply conduits 98, 101, 103 and 105 for providing a desired amount of pressure to feed the colored toner to multicolor spray assembly 20.
  • multicolor toner spray assembly 20, which is preferably a three level spray assembly receives supplies of colored toner from up to six different reservoirs (not shown) which allows for custom colored toner in addition to the standard process colors.
  • a preferred type of toner for use with the present invention is that described in Example 1 of U.S. Patent 4,794,651, or variants thereof as are well known in the art.
  • carbon black is replaced by color pigments as is well known in the art.
  • Other toners may alternatively be employed, including liquid toners and, as indicated above, including powder toners.
  • Another preferred embodiment of the toner for use in the invention is prepared using the following method:
  • the resulting material is diluted with additional Isopar L and Marcol 82 to give a working developer in which the dry solids portion is about 1.7% and in which the overall ratio of Isopar L to Marcol is between about 50:1 and 500:1, more preferably between about 100:1 and 200:1.
  • Charge director as described in US patent application 07/915,291 (utilizing lecithin, BBP and ICIG3300B) and in WO 94/02887, in an amount equal to 40 mg/gm of solids, is added to charge the toner particles.
  • Other charge directors and additional additives as are known in the art may also be used.
  • Cyan, magenta and yellow toners can be produced by using a different mix of materials for step 2).
  • Cyan toner 822g of the solubilized material, 21.33 grams each of BT 583D and BT 788D pigments (Cookson), 1.73 grams of D1355DD pigment (BASF), 7.59 grams of aluminum tri stearate and 1426 grams of Isopar L are used in step 2.
  • Magenta toner 810 grams of solubilized material, 48.3 grams of Finess Red F2B, 6.81 grams of aluminum tri-stearate and 1434.2 grams of Isopar L are used in step 2.
  • For yellow toner 810 grams of solubilized material 49.1 grams of D1355DD pigment, 6.9 grams of aluminum tri-stearate and 1423 grams of Isopar L are used in step 2.
  • Intermediate transfer member 30 may, for some embodiments of the invention, be any suitable intermediate transfer member having a multilayered transfer portion such as those described below or in US Patents 5,089,856 or 5,047,808 or in the applications mentioned herein and by other structures known in the art.
  • Member 30 is maintained at a suitable voltage and temperature for electrostatic transfer of the image thereto from the image bearing surface.
  • Intermediate transfer member 30 is preferably associated with a pressure roller 71 for transfer of the image onto a final substrate 72, such as paper, preferably by heat and pressure.
  • a final substrate 72 such as paper
  • Certain aspects of the present invention especially the method of mounting a transfer blanket on a drum are of general applicability and are applicable to a wide range of blanket types for ink, liquid toner or powder toner as are known in the art.
  • Cleaning apparatus 32 is operative to scrub clean the surface of photoreceptor 12 and preferably includes a cleaning roller 74, a sprayer 76 to spray a non-polar cleaning liquid to assist in the scrubbing process and a wiper blade 78 to complete the cleaning of the photoconductive surface.
  • Cleaning roller 74 which may be formed of any synthetic resin known in the art for this purpose is driven in the same sense as drum 10 as indicated by arrow 80, such that the surface of the roller scrubs the surface of the photoreceptor. Any residual charge left on the surface of photoreceptor sheet 12 may be removed by flooding the photoconductive surface with light from optional neutralizing lamp assembly 36, which may not be required in practice.
  • the single color image is transferred to intermediate transfer member 30.
  • Subsequent images in different colors are sequentially transferred in alignment with the previous image onto intermediate transfer member 30.
  • the complete multi-color image is transferred from transfer member 30 to substrate 72.
  • Impression roller 71 only produces operative engagement between intermediate transfer member 30 and substrate 72 when transfer of the composite image to substrate 72 takes place.
  • each single color image is separately transferred to the substrate via the intermediate transfer member. In this case, the substrate is fed through the machine once for each color or is held on a platen and contacted with intermediate transfer member 30 for composite image transfer.
  • FIGs. 3A, 3B and 4A-4D illustrate a preferred embodiment of intermediate transfer member 30 in accordance with a preferred embodiment of the invention.
  • Fig 3A shows an intermediate transfer blanket 100 mounted on a drum 102.
  • Transfer blanket 100 (whose details are shown in Figs. 4C and 4D) comprises a preferably layered transfer portion 104 and a mounting fitting 106.
  • transfer portion 104 comprises a release layer 109 which is outermost on the blanket when it is mounted on drum 102.
  • Underlying layer 109 is a conforming layer 111 preferably of a soft elastomer, preferably of polyurethane and preferably having a Shore A hardness of less than about 65, more preferably, less than about 55, but preferably more than about 35. A suitable hardness value is between 45-55, preferably about 50.
  • Underlying layer 111 is a conductive layer 114 which overlays a thin barrier layer 115.
  • Barrier layer 115 overlays a blanket body 116 comprising a top layer 118, a compressible layer 120 and a fabric layer 122.
  • Underlying the fabric layer is preferably an adhesive layer 126 which is in contact with drum 102.
  • Drum 102 is preferably heated by an internal halogen lamp heater or other heater to aid transfer of the image to and from the release layer 109 to a final substrate as is well known in the art.
  • Other heating methods, or no heating at all, may also be used in the practice of some aspects of the invention. The degree of heating will depend on the characteristics of the toner and or ink used in conjunction with the invention.
  • mounting fitting 106 comprises an elongate electrically conducting bar 108, for example of a metal such as aluminum formed with a series of L-shaped mounting legs 110 (in the form of finger-like extensions) which are also conducting, preferably of the same material as bar 108, and preferably formed integrally therewith.
  • bar 108 is formed with a slot into which the end of layered transfer portion 104 is inserted.
  • the end of the layered portion which is inserted into the mounting bar does not have a release layer 109 or conforming layer 111, whereby conducting layer 114 is exposed and is therefore in electrical contact with bar 108.
  • the bar 108 can be formed with sharp internal projections which pierce the outer layers of the blanket and contact the conducting layer.
  • each of the layers beneath the conducting layer 114 may be partially conducting (for example, by the addition of conductive carbon black or metal fibers) and the adhesive layer may be conductive, such that current also flows directly from the drum surface to the conducting layer.
  • fitting 106 is formed of a single sheet of metal, wherein the legs are partially cut from the metal which is bent into a U shape to form the slot into which the layered portion is inserted. After insertion, the outer walls of the slot are forced against the layered portion to secure the layered portion in the slot. The partially cut out portion is bent to form the mounting legs.
  • drum 102 is maintained at a potential suitable for transferring images to the intermediate transfer member, for example at 500 volts, which voltage is applied, via mounting fitting 106 to conductive layer 114.
  • the source of transfer voltage is very near the outer surface of portion 104 which allows for a lower transfer potential on the drum.
  • Transfer portion 104 is fabricated by the following procedure:
  • mounting legs 110 are inserted into a plurality of mounting holes 130 formed in drum 102, preferably without removing the mylar sheet from the adhesive layer (the back of the blanket).
  • mounting legs 110 each have a tip portion 132 and a back portion 134. Tips 132 are inserted into slots formed in the far sidewalls of mounting holes 130 and the back portion 134 rests against the opposite sidewall of the hole. In this way the end of the blanket is accurately positioned. The edge of the mylar sheet closest to the legs is removed and the remainder of the mylar sheet is progressively removed while making sure that the successive portions of the blanket which are thus attached to the drum by the adhesive lie flat against the drum.
  • a very soft conforming layer may be used at the back of the blanket.
  • a soft layer of this type will allow for good thermal contact between the blanket and the heated drum 102 so that the temperature of the drum need not be excessive in order for the outer surface of the blanket to reach its operating temperature. Furthermore, such a very soft layer will cause the blanket to "cling" to the drum obviating the use of adhesive under certain circumstances. Furthermore, when the blanket is replaced there is no adhesive residue on the drum to be removed.
  • a very soft layer may be produced by the following method:
  • the layer has a Shore A hardness of about 20-24 without carbon black and about 40-45 with carbon black. Softer materials are also suitable; however, substantially harder materials do not adhere well to the drum surface.
  • the adhesive layer at the trailing end of the blanket is not coated with the very soft layer to improve coherence of the blanket and the drum. This is especially desirable for harder layers.
  • the acrylic material may be replaced by other soft elastomer materials such as soft polyurethane or nitrile rubber.
  • Other heat improving fillers which have a smaller effect on the hardness of the final product may be used instead of carbon black, such as Fe 2 O 3 or alpha aluminum oxide.
  • Fig. 5 shows an alternative, preferred embodiment of the invention in which somewhat different shaped holes 130' are used.
  • the back portion 134 rests against a protrusion 150 formed on one side of the hole while a surface 154 of leg 110 rests against the bottom 156 of a protrusion formed on the other side of the hole.
  • the preferred electrical connection between the conductive layer and the mounting bar is preferably achieved by removing (or not forming) the layers which overlay an end portion of the conductive layer, piercing the overlying layers, for example, by crimping and/or piercing the mounting bar, for example, at points marked 160 in Fig. 4D. Crimping can also be used to hold the blanket in the mounting bar.
  • the adhesive layer preferably covers the back of the blanket, alternatively the adhesive layer may cover only a portion of the back such as the edge farthest away from the bracket (the trailing edge of the blanket); or may, for some embodiments of the invention and under certain circumstances, be omitted.
  • the invention is not limited to the specific type of image forming system described above and the present invention is also useful with any suitable imaging system which forms a liquid toner image on an image forming surface and, with powder toner systems.
  • the invention is suitable for use with offset printing systems.
  • the specific details given above for the image forming system are included as part of a best mode of carrying out the invention; however, the invention is applicable to a wide range of systems as known in the art for electrophotographic and offset printing and copying.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Wet Developing In Electrophotography (AREA)
EP95920290A 1994-10-11 1995-06-06 Imaging apparatus and intermediate transfer blanket therefor Expired - Lifetime EP0784809B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01204163A EP1179757B1 (en) 1994-10-11 1995-06-06 Imaging apparatus and intermediate transfer blanket therefor
EP01204162A EP1178366B1 (en) 1994-10-11 1995-06-06 Imaging apparatus and intermediate transfer blanket therefor

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US32153894A 1994-10-11 1994-10-11
US321538 1994-10-11
IL11184694 1994-12-01
IL11184794 1994-12-01
IL11184694A IL111846A0 (en) 1994-12-01 1994-12-01 Imaging apparatus and intermediate transfer blanket therefor
IL11184794A IL111847A0 (en) 1994-12-01 1994-12-01 Imaging apparatus and intermediate transfer blanket therefor
US371117 1995-01-11
US08/371,117 US5745829A (en) 1989-01-04 1995-01-11 Imaging apparatus and intermediate transfer blanket therefor
PCT/NL1995/000188 WO1996011426A1 (en) 1994-10-11 1995-06-06 Imaging apparatus and intermediate transfer blanket therefor

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP01204163A Division EP1179757B1 (en) 1994-10-11 1995-06-06 Imaging apparatus and intermediate transfer blanket therefor
EP01204162A Division EP1178366B1 (en) 1994-10-11 1995-06-06 Imaging apparatus and intermediate transfer blanket therefor

Publications (2)

Publication Number Publication Date
EP0784809A1 EP0784809A1 (en) 1997-07-23
EP0784809B1 true EP0784809B1 (en) 2002-09-11

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EP95920290A Expired - Lifetime EP0784809B1 (en) 1994-10-11 1995-06-06 Imaging apparatus and intermediate transfer blanket therefor

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EP (1) EP0784809B1 (ja)
JP (3) JP3708547B2 (ja)
AU (1) AU2578495A (ja)
CA (1) CA2202270A1 (ja)
DE (1) DE69528188T2 (ja)
WO (1) WO1996011426A1 (ja)

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IL114992A0 (en) 1995-08-17 1995-12-08 Indigo Nv Intermediate transfer blanket and method of producing the same
CA2273248C (en) 1996-12-03 2005-06-28 Indigo N.V. Method and apparatus for cleaning an image transfer member
CA2292592A1 (en) * 1997-06-03 1998-12-10 Indigo N.V. Intermediate transfer blanket and method of producing the same
EP1028358B1 (en) * 1997-06-03 2003-09-10 Hewlett-Packard Indigo B.V. Intermediate transfer blanket for toner images
US20080279587A1 (en) * 2007-05-09 2008-11-13 Soenke Dehn Digital multi-color printing machine
JP2010197724A (ja) * 2009-02-25 2010-09-09 Seiko Epson Corp 転写装置、画像形成装置及び画像形成方法
JP2010256442A (ja) * 2009-04-22 2010-11-11 Seiko Epson Corp 画像形成装置および画像形成方法
EP2253471A1 (de) * 2009-05-18 2010-11-24 Müller Martini Holding AG Druckzylinder mit Gummituch für eine Rollenoffsetdruckmaschine
JP2010281895A (ja) * 2009-06-02 2010-12-16 Seiko Epson Corp 転写装置および該装置を装備する画像形成装置
JP5054136B2 (ja) * 2010-02-25 2012-10-24 三菱重工印刷紙工機械株式会社 中間転写ブランケット及び電子写真印刷用中間転写体
BR112013021746A2 (pt) 2011-03-30 2016-10-18 Hewlett Packard Indigo Bv composição líquida de toner, método para produzir uma composição líquida de toner e método para impressão eletrofotográfica
JP5203527B2 (ja) * 2012-07-26 2013-06-05 三菱重工印刷紙工機械株式会社 印刷部及び電子写真印刷装置
US12122178B2 (en) * 2019-03-07 2024-10-22 Xerox Corporation Imaging blanket and variable data lithography system employing the imaging blanket
JP7342514B2 (ja) 2019-08-14 2023-09-12 富士フイルムビジネスイノベーション株式会社 ジャケット、転写装置、および画像形成装置

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US4984025A (en) * 1989-02-06 1991-01-08 Spectrum Sciences B.V. Imaging system with intermediate transfer member
US5089856A (en) * 1989-02-06 1992-02-18 Spectrum Sciences B.V. Image transfer apparatus incorporating an internal heater
US5585900A (en) * 1989-05-15 1996-12-17 Indigo N.V. Developer for liquid toner imager
DE3919281C1 (ja) * 1989-06-13 1991-01-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE69319535T2 (de) * 1992-04-13 1998-10-29 Toyo Ink Mfg Co Bildübertragungsgerät

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Publication number Publication date
CA2202270A1 (en) 1996-04-18
JP2004171022A (ja) 2004-06-17
DE69528188D1 (de) 2002-10-17
DE69528188T2 (de) 2003-05-15
EP0784809A1 (en) 1997-07-23
AU2578495A (en) 1996-05-02
JP2005122192A (ja) 2005-05-12
WO1996011426A1 (en) 1996-04-18
JPH10509525A (ja) 1998-09-14
JP3708547B2 (ja) 2005-10-19
JP3869442B2 (ja) 2007-01-17

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