EP0608264A1 - Printer or copier with an arrangement for printing both sides of a recording medium. - Google Patents
Printer or copier with an arrangement for printing both sides of a recording medium.Info
- Publication number
- EP0608264A1 EP0608264A1 EP92920147A EP92920147A EP0608264A1 EP 0608264 A1 EP0608264 A1 EP 0608264A1 EP 92920147 A EP92920147 A EP 92920147A EP 92920147 A EP92920147 A EP 92920147A EP 0608264 A1 EP0608264 A1 EP 0608264A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transfer
- printing
- recording medium
- fixing
- transfer belt
- 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.)
- Granted
Links
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
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
- G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
- G03G15/232—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
- G03G2215/0167—Apparatus for electrophotographic processes for producing multicoloured copies single electrographic recording member
- G03G2215/0174—Apparatus for electrophotographic processes for producing multicoloured copies single electrographic recording member plural rotations of recording member to produce multicoloured copy
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/16—Transferring device, details
- G03G2215/1676—Simultaneous toner image transfer and fixing
- G03G2215/1695—Simultaneous toner image transfer and fixing at the second or higher order transfer point
Definitions
- Printing or copying device with an arrangement for double-sided printing on a recording medium
- the invention relates to an arrangement for printing on the front or the back of a record carrier in a printing or copying device operating according to the transfer printing principle, and to a method for operating such an arrangement.
- Printing or copying machines for simplex or duplex printing are e.g. B. from US-A-4 477 176 and US-A 4 537 493.
- These are electrophotographic printing devices with a photoconductor, on which at least two charge images can be arranged one behind the other and which have a transfer printing station with associated single sheet positioning device (turning device), which enables the electrophotographic printing device to be operated in two operating modes to operate in a first operating mode, in which the colored toner images arranged one behind the other on the charge image carrier are arranged one above the other or next to one another on one side of the single sheet, and in a second operating mode, in which the sequence of be on the charge image carrier ⁇ sensitive toner images is arranged on the front and back of the single sheet.
- the toner images are fixed on the individual sheets with the aid of a roller fixing station using pressure and high temperatures.
- each braking, acceleration and turning device in the device exerts forces on the record carrier, which complicates exact positioning of the record carrier and thus reliable guidance of the record carrier in the device. This increases the risk of congestion considerably, which can lead to frequent downtimes.
- the turning of a recording medium provided with toner images before the fixing requires a considerable amount of guidance in order to prevent blurring of the toner images.
- the aim of the invention is to provide an arrangement for printing on the front and / or back of a recording medium in a printing or copying device which works according to the transfer printing principle, as well as a method for operating such an arrangement which enables simultaneous printing and fixing of the Record carrier on the front and back is possible in just one operation.
- Another object of the invention is to achieve an optimal register accuracy of the printed images on the recording medium with a minimal control effort.
- the invention enables simultaneous transfer printing with simultaneous fixation in only one operation.
- the recording medium can move in a completely straight path through the device at a continuous speed.
- a turning device can be omitted.
- Both before and after the transfer printing and fixing station there is no smearable print image on the recording medium. It is thus possible to guide and transport the recording medium on both sides both before and after the transfer printing and fixing station.
- the one-time processing operation with simultaneous 20th double-sided transfer printing using low-temperature fixation leads to gentle processing of the record carrier. This prevents warping and tension in the record carrier.
- FIG. 1 shows a schematic sectional illustration of an arrangement for printing on the front and / or the back of a recording medium in a printing device which operates on the transfer printing principle
- FIG. 2 shows a schematic side view of the transfer printing and fixing station used in the arrangement of FIG. 1.
- the illustrated electrophotographic single-sheet printing device for single or multi-color printing of single sheets in simplex or duplex mode contains an intermediate carrier 10 in the form of a photoconductor drum which is driven by an electric motor. Instead of the photo conductor drum, however, an OPC belt can also be arranged. Grouped around the first intermediate carrier 10, the various units are for the electrophotographic process. These are essentially: a charging device LE in the form of a charging corotron for charging the intermediate carrier • 10; a character generator ZG with an LED comb for character-dependent exposure of the intermediate carrier 10; Developer stations EY, EM, EC and EB for coloring the charge-dependent discharged images generated with the help of the character generator ZG on the intermediate carrier 10 with colored toner.
- the developer station EY contains yellow toner, the developer station EM toner in the color magenta, the developer station EC toner the color cyan and the developer station EB black toner.
- a cleaning station RS is provided with a cleaning brush integrated therein with an associated suction device and a discharge device (not shown here).
- the developer stations EY, EM, EC and EB are interchangeable designed bar and can z. B. pulled out of the device via slide guides and inserted into the device. They are usually constructed and contain developer rollers for coloring the charge image. They can be controlled individually and can be operated or activated together or individually.
- the transfer belt 12 can be designed as a thermoadhesive transfer belt with a temperature-resistant carrier fabric, eg B. from glass fiber fabric or temperature-resistant plastic, with an elastic cover layer arranged thereon made of silicone or a silicone-like material, for. B. rubber.
- the transfer belt 12 is also driven by an electric motor and is guided over deflection rollers 13, 14, 16 and 17.
- the deflecting roller 13 is part of a transfer printing and fixing station 18. It has a relatively large diameter and can be designed to be heatable in the form of a deflecting roller.
- the deflecting roller can contain a heater in the form of a radiator.
- the deflecting rollers 16 and 17 are part of the transfer station 1-1, which in the case shown contains a transfer corotron 19. However, it is also possible to arrange a mechanical transfer station instead of such an electrostatic transfer station, in which the toner images developed on the intermediate carrier 10 are transferred to the transfer belt 12 by contact between the transfer belt 12 and the intermediate carrier 10. Also assigned to the transfer belt is a heating station 20 with an infrared heating source arranged therein and, if necessary, a cleaning device 15, 21 for the transfer belt, e.g. in the form of cleaning rollers.
- a transfer and fixing element 22 in is parallel to the deflection roller 13 Form arranged a heated transfer roller. It is guided on both sides and is supported on the deflection roller 13 and thus on the transfer belt 12 by means of an elastic suspension. It can also be driven by an electric motor.
- the area between the deflected transfer belt 12 or the deflection roller 13 and the transfer roller 22 is referred to as transfer and fixing gap 23.
- the Umtik ⁇ roller 22 has a structure as shown for example in Figure 2. It consists of a metal hollow roller 24 made of aluminum with an elastic layer arranged thereon, e.g. B. made of rubber 25 and an outer jacket layer 26 made of fluoroplastic.
- the fluoroplastic-containing outer jacket can, for. B.
- Teflon can be used as the fluoroplastic-containing material. Teflon is a trademark of Du Pont. Fluoroplastic materials are e.g. B. materials made of tetrafluoroethylene, photopolymers of tetrafluoroethylene and hexafluoropropylene and similar materials.
- the hollow roller 24 can have a thickness of 2 to 5 mm, the rubber layer 25 z. B. a thickness of 200 to 500 microns. However, other dimensions are possible, as z. B. are described in EP-B1-0 186 314.
- a heating device 27 Arranged in the hollow roller 24 is a heating device 27 in the form of a radiant heater. It is also possible to heat the hollow roller 24 from the outside.
- a cleaning device 28 e.g. B. in the form of a movable assembly line or in the form of brushes.
- the cleaning device 28 can be swiveled in and out on the transfer roller 22 in the arrow directions shown in FIG. 1 with the aid of a swivel mechanism.
- a paper channel 30 For feeding a recording medium 29 in the form of a single sheet or several arranged side by side Single sheets for the transfer printing and fixing gap 23, a paper channel 30 is provided with the recording medium transport devices 31 and 32 assigned to the paper channel, e.g. B. with paper transport rollers 33 or conveyor belts engaging on both sides of the paper channel 30. These recording medium transport devices transport the individual sheets 29 from a storage area 34 to the transfer printing and fixing nip 23 and from there to a stacking device 35
- Recording medium transport device 31 can be assigned a preheating device 36 for the recording medium.
- This preheating device 36 can be constructed corresponding to the heating station 20 and it can have radiator elements arranged on both sides of the paper transport channel 30. Instead of separate radiators, it is also possible, for. B. to heat the paper transport rollers 33 of the record carrier transport device 31,
- the recording medium 29 to be printed is fed in the form of a single sheet to the transfer printing and fixing station 18 in such a way that its rear side faces upwards and its front side points downwards.
- the record carrier 29 is thus stacked face down in the stacking device 35.
- the designations "front side” and “back side” are to be understood relatively to describe the two opposite surfaces of the recording medium.
- the present printing or copying machine has a format-independent printing performance in order to reduce the control effort and to achieve high register accuracy. That means within a certain unit of time it can be A4 or A5 regardless of the size of the formats or US formats a certain number of single sheets can be printed. The print performance is based on the processing speed of the largest possible format.
- the single sheets 29 of different formats are thus fed to the transfer printing and fixing station 18 with a fixed time grid in fixed time windows and printed within these fixed time windows regardless of their format size.
- the photoconductor 10 For this purpose, clocked by the device control, one defines on the photoconductor 10 image areas 38 within which charge images 37/1, 37/2 can be generated at any point via the character generator ZG by exposing the photoconductor drum 10.
- the so-called "IMAGE” is also determined by the image areas.
- the image areas 38 of constant size are continuously lined up, their constant length is referred to as the following distance.
- the following distance must now be dimensioned such that it is larger than the largest possible recording medium format to be processed.
- the size of the image areas and thus the subsequent distance is determined in such a way that the common DIN and US formats result in a maximum printing performance and thus the specified image areas and thus the largest charge image that can be generated is used to the maximum.
- the individual sheets of different formats can be continuously fed and printed to the printing or copying device in a rigid time sequence predetermined by the geometry. This considerably reduces the control effort.
- the feeding of the single sheets can be rigidly geometrically synchronized with respect to their front edges with the start of the image areas 38, that is, according to the fixed clock sequence of the edges of the image areas, the front edges of the individual sheets are fed to the transfer printing and fixing station 18. leads and prints.
- the circumferential length of the transfer printing and fixing element and thus the transfer roller 22 is adapted to the required length of the image areas 38 and thus to the fixed predetermined subsequent distance.
- the latent character images of the back 37/1 and the front 37/2 of a sequence of individual sheets 29 to be printed are produced in succession in the image areas 38 of the photoconductor 10 by exposure, specifically the back 37 / 1 followed by the front 37/2 etc.
- the latent character images "IMAGES" are then colored by one of the developer stations EB to EY depending on the desired color with toner and thus toner images 39/1 and 39/2 are produced.
- the toner images 39/1 and 39/2 are then electrostatically transferred to the transfer belt 12 in the transfer station 11.
- the transfer belt 12 is in a hot state. It is kept at this temperature by the heating device 20. That way now. first transfer back information and then front information to transfer belt 12.
- the action of the heating device 27 changes the state of the toner images, they become doughy.
- the transfer belt 12 transports the toner images of the back 39/1 and the front 39/2, which follow one after the other into the transfer printing and fixed nip 23.
- the beginning of the back toner image 39/1 reaches the fixing gap 23 again after one revolution of the transfer roller 22
- the beginning of the front-side toner image 39/2 is likewise in the same position in the fixing gap 23, as is the front edge of the recording medium 29 to be printed.
- the recording medium can be preheated via the heating device 36 (preheating device) before being fed to the transfer printing and fixing station 18.
- the warm single sheet coincides with the pasty toner image of the back 39/1 and the pasty toner image of the front 39/2.
- the print information can thus be fixed immediately under low temperature influences with the transfer to the recording medium.
- a clock sequence is used with which a single sheet is fed after every second toner image.
- the guidance of the single sheets in the paper transport channel 30 is straight, the transport speed is continuous. Due to the rigid, geometrically precisely determined sequence, a high level of registration accuracy is achieved. Record carriers are printed gently since the temperatures are low and the transfer printing and fixing station 18 only has to be passed once in duplex operation.
- the corresponding charge images are generated in succession in the image areas 38, colored in the developer station E according to the desired color, transferred to the transfer belt 12 and, in the case shown, to the individual sheets fed one behind the other on the front - transfer page. Due to the continuous feeding of the single sheets, there is no unwanted transfer of toner images to the transfer roller 22 assigned to the back.
- the toner images are normally transferred completely to the single sheets 29 without residues of the toner remaining on the transfer belt 12 or the transfer roller 22. Faults occurring in the electrophotographic process can, however, lead to an accumulation of toner at fault points, which in some circumstances leads to the fact that toner residues still remain on the transfer printing roller or the transfer belt 12.
- the transfer belt 12 can be assigned a cleaning device 21 in the form of one or more cleaning rollers 15, 21 and the transfer roller 22 a cleaning device 28 e.g. in the form of a fleece cleaning station that can be swiveled in and out.
- the fleece cleaning station 28 is pivoted on and off in a controlled manner by the device control as a function of the toner image sequence.
- the transfer roller 22 can be cleaned with the fleece cleaning station 28 swiveled in, e.g. then take place when there is no toner image to be printed on the transfer roller 22 or e.g. during the transfer to the single sheet.
- cleaning cycles can be inserted as part of the printing cycle sequence.
- the heated, doughy partial color toner images are then superimposed by the transfer roller 22 and, together with a single-color toner image for the front side, which is also connected to the transfer belt 12, are transferred simultaneously and in one operation to a supplied single sheet.
- the supplied single sheets 29 can be printed in color on their back side.
Abstract
Une imprimante ou un photocopieur fonctionnant selon le principe hectographique comprend un dispositif d'impression du recto et/ou du verso d'un support d'enregistrement (29). Le dispositif comprend un tambour photoconducteur (10) et une bande thermoadhésive de transfert (12) couplée au tambour photoconducteur. Une station (18) d'impression hectographique et de fixation associée à la bande de transfert (12) contient une fente de fixation (23) d'un côté de laquelle est située la bande de transfert (10) et de l'autre côté de laquelle est situé un élément d'impression hectographique et de fixation (22) constitué par un rouleau chauffé d'impression hectographique. La bande de transfert (10) et l'élément d'impression hectographique et de fixation (22) s'appuient élastiquement l'un sur l'autre. Afin d'imprimer en même temps le recto et le verso d'un support d'enregistrement, une première image en toner (39/1) associée au verso du support d'enregistrement (29) et une deuxième image en toner associée au recto (39/2) du support d'enregistrement (29) sont générées sur le tambour photoconducteur et transférées dans cet ordre à la bande de transfert (12). Les images en toner chauffées jusqu'à l'état pâteux sont amenées à la fente de fixation (23), l'image en toner (39/1) correspondant au verso étant traitée la première par le rouleau chauffé (22) d'impression hectographique et de fixation (22). Le support d'enregistrement (29) est ensuite amené à la fente de fixation (23). En tournant sur la feuille (29), la bande de transfert (12) et le rouleau d'impression (22) assurent en même temps le transfert et la fixation des images en toner sur les deux côtés du support d'enregistrementA printer or photocopier operating according to the hectographic principle comprises a device for printing the front and/or the back of a recording medium (29). The device includes a photoconductive drum (10) and a thermal adhesive transfer tape (12) coupled to the photoconductive drum. A hectographic printing and fixing station (18) associated with the transfer tape (12) contains a fixing slot (23) on one side of which the transfer tape (10) is located and on the other side of which is located a hectographic printing and fixing element (22) constituted by a heated hectographic printing roller. The transfer belt (10) and the hectographic printing and fixing element (22) rest elastically on each other. In order to print the front side and the back side of a recording medium at the same time, a first toner image (39/1) associated with the back side of the recording medium (29) and a second toner image associated with the front (39/2) of the recording medium (29) are generated on the photoconductive drum and transferred in this order to the transfer tape (12). The toner images heated to a pasty state are supplied to the fixing slot (23), the toner image (39/1) corresponding to the back being processed first by the heated printing roller (22) hectographic and fixation (22). The recording medium (29) is then brought to the fixing slot (23). By rotating on the sheet (29), the transfer belt (12) and the printing roller (22) simultaneously transfer and fix the toner images on both sides of the recording medium.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92920147A EP0608264B1 (en) | 1991-10-15 | 1992-09-24 | Printer or copier with an arrangement for printing both sides of a recording medium |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91117565 | 1991-10-15 | ||
EP91117565 | 1991-10-15 | ||
EP92920147A EP0608264B1 (en) | 1991-10-15 | 1992-09-24 | Printer or copier with an arrangement for printing both sides of a recording medium |
PCT/EP1992/002214 WO1993008511A1 (en) | 1991-10-15 | 1992-09-24 | Printer or copier with an arrangement for printing both sides of a recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0608264A1 true EP0608264A1 (en) | 1994-08-03 |
EP0608264B1 EP0608264B1 (en) | 1995-11-15 |
Family
ID=8207260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92920147A Expired - Lifetime EP0608264B1 (en) | 1991-10-15 | 1992-09-24 | Printer or copier with an arrangement for printing both sides of a recording medium |
Country Status (5)
Country | Link |
---|---|
US (1) | US5420662A (en) |
EP (1) | EP0608264B1 (en) |
JP (1) | JPH07500925A (en) |
DE (1) | DE59204375D1 (en) |
WO (1) | WO1993008511A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69432851T2 (en) * | 1993-12-09 | 2004-05-19 | Nec Corp. | Method and apparatus for forming images on both sides of recording paper without turning that paper over |
JP3206290B2 (en) * | 1994-04-15 | 2001-09-10 | 日立工機株式会社 | Image forming system |
US5561510A (en) * | 1995-01-31 | 1996-10-01 | Eastman Kodak Company | Image forming method utilizing intermediate transfer |
US5740510A (en) * | 1995-05-09 | 1998-04-14 | Agfa-Gevaert | Electrostatographic multicolour printing apparatus for single pass sequential duplex printing on a web-type toner receptor material |
DE19535776A1 (en) * | 1995-09-26 | 1996-10-17 | Siemens Nixdorf Inf Syst | Electrographic printer for multiple printing onto strip-shaped print medium |
KR970028908A (en) * | 1995-11-24 | 1997-06-24 | 엘 드 샴펠라에레 | Single Pass Multicolor Blackout Photo Printer |
US5826143A (en) * | 1996-03-26 | 1998-10-20 | Konica Corporation | Image forming apparatus with two transfer means |
KR0183921B1 (en) * | 1996-08-30 | 1999-05-15 | 삼성전자주식회사 | Electrophotography type printer |
KR100200620B1 (en) * | 1996-09-13 | 1999-06-15 | 윤종용 | Electrophotographic printer for both-side printing |
JP3954431B2 (en) * | 2002-04-26 | 2007-08-08 | 株式会社リコー | Image forming apparatus |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2990278A (en) * | 1955-12-29 | 1961-06-27 | Haloid Xerox Inc | Method and apparatus for transferring and fixing xerographic images |
US3506347A (en) * | 1967-10-19 | 1970-04-14 | Xerox Corp | Duplex xerographic reproduction apparatus |
US3893761A (en) * | 1972-11-02 | 1975-07-08 | Itek Corp | Electrophotographic toner transfer and fusing apparatus |
US3923392A (en) * | 1974-01-02 | 1975-12-02 | Itek Corp | Electrophotographic copier |
USRE32422E (en) * | 1977-02-14 | 1987-05-19 | Eastman Kodak Company | Method and apparatus for producing duplex copies |
JPS55100582A (en) * | 1979-01-25 | 1980-07-31 | Ricoh Co Ltd | Toner image transferring method |
US4448872A (en) * | 1979-02-22 | 1984-05-15 | Delphax Systems | Duplex imaging with pressure transfixing |
NZ198031A (en) * | 1980-08-21 | 1988-11-29 | Dennison Mfg Co | Electrostatic printer: charged particles extracted from glow discharge |
JPS57164773A (en) * | 1981-04-03 | 1982-10-09 | Konishiroku Photo Ind Co Ltd | Method and device for transferring and fixing of toner image |
JPS5977467A (en) * | 1982-10-25 | 1984-05-02 | Konishiroku Photo Ind Co Ltd | Intermediate transfer material |
US4477176A (en) * | 1983-12-27 | 1984-10-16 | Eastman Kodak Company | Apparatus for producing multiple image simplex and duplex copies in a single pass |
US4537493A (en) * | 1984-02-01 | 1985-08-27 | Eastman Kodak Company | Copy sheet positioning apparatus |
JPH0229217B2 (en) * | 1984-11-13 | 1990-06-28 | Konishiroku Photo Ind | ZOKIROKUHOHO |
US4714939A (en) * | 1985-11-04 | 1987-12-22 | Eastman Kodak Company | Electrographic reproduction apparatus |
US4688925A (en) * | 1985-12-06 | 1987-08-25 | Eastman Kodak Company | Electrographic reproduction apparatus capable of producing duplex copies |
JPH01209470A (en) * | 1988-02-17 | 1989-08-23 | Minolta Camera Co Ltd | Electrophotographic image forming device |
GB2226792B (en) * | 1988-12-05 | 1992-06-24 | Ricoh Kk | Side-free recording apparatus |
WO1992010793A1 (en) * | 1989-01-04 | 1992-06-25 | Spectrum Sciences B.V. | Imaging system with intermediate transfer member |
JP2906538B2 (en) * | 1990-03-02 | 1999-06-21 | ミノルタ株式会社 | Image forming device |
US5138389A (en) * | 1990-10-22 | 1992-08-11 | Eastman Kodak Company | Imaging apparatus utilizing intermediate transfer member |
US5070372A (en) * | 1990-10-22 | 1991-12-03 | Eastman Kodak Company | Method and apparatus of forming combined toner images |
US5070371A (en) * | 1990-10-22 | 1991-12-03 | Eastman Kodak Company | Method and apparatus for handling toner images |
-
1992
- 1992-09-24 WO PCT/EP1992/002214 patent/WO1993008511A1/en active IP Right Grant
- 1992-09-24 EP EP92920147A patent/EP0608264B1/en not_active Expired - Lifetime
- 1992-09-24 JP JP5507376A patent/JPH07500925A/en active Pending
- 1992-09-24 DE DE59204375T patent/DE59204375D1/en not_active Expired - Fee Related
- 1992-09-24 US US08/211,697 patent/US5420662A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9308511A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0608264B1 (en) | 1995-11-15 |
JPH07500925A (en) | 1995-01-26 |
US5420662A (en) | 1995-05-30 |
WO1993008511A1 (en) | 1993-04-29 |
DE59204375D1 (en) | 1995-12-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0154695B1 (en) | Non-mechanical printing or copying device for multicolour and duplex printing | |
EP0570419B1 (en) | Copying machine with a belt-type image-carrier transfer element | |
DE69130425T3 (en) | TWO-SIDED PRESSURE UNIT | |
DE2734314C2 (en) | ||
DE4213236C2 (en) | Copier | |
DE3341631A1 (en) | RECORDING DEVICE | |
EP1465023B1 (en) | Corotron with counter electrode | |
DE4422634C2 (en) | Imaging device | |
DE4132861C2 (en) | Electrophotographic printer for a continuous recording medium | |
DE69819052T2 (en) | Imaging device with fuser | |
EP0608264B1 (en) | Printer or copier with an arrangement for printing both sides of a recording medium | |
DE2526813A1 (en) | METHOD AND DEVICE FOR MELTING TONER IMAGES ON SHEET-SHAPED CARRIERS | |
DE19517816A1 (en) | Fixer with heated roller for colour printers | |
EP0635146A1 (en) | Electrophotographic printing device for the simultaneous printing of both sides of a substrate. | |
DE4129277C2 (en) | ||
DE19513584C2 (en) | Electrophotographic printing device | |
EP0551288B1 (en) | Thermo-fixing station with belt conveyor | |
DE69919087T2 (en) | Device for the accurate generation of multiple toner images on a substrate | |
DE3937848A1 (en) | Positioning of continuously fed paper in laser printer - detecting edge of paper to provide reference for locating paper in printer | |
DE19820672A1 (en) | Toner image heating arrangement | |
DE3811413A1 (en) | Device for image recording | |
DE60313264T2 (en) | Imaging apparatus with belt fuser for simultaneously fixing both sides of a duplex printing | |
DE2705893C3 (en) | Thermal fuser | |
DE2555116A1 (en) | CONVEYOR BELT FOR THE MELTING DEVICE OF AN ELECTROPHOTOGRAPHIC COPY MACHINE | |
DE4042050C2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19940407 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL |
|
17Q | First examination report despatched |
Effective date: 19950419 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19951115 |
|
REF | Corresponds to: |
Ref document number: 59204375 Country of ref document: DE Date of ref document: 19951221 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19960122 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
NLS | Nl: assignments of ep-patents |
Owner name: OCE PRINTING SYSTEMS GMBH |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19970722 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990401 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19990401 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20060823 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20060922 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20060929 Year of fee payment: 15 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20070924 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080401 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20080531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070924 |