EP0771437A1 - Multifunktionale druckeinrichtung mit modularem aufbau - Google Patents
Multifunktionale druckeinrichtung mit modularem aufbauInfo
- Publication number
- EP0771437A1 EP0771437A1 EP95917905A EP95917905A EP0771437A1 EP 0771437 A1 EP0771437 A1 EP 0771437A1 EP 95917905 A EP95917905 A EP 95917905A EP 95917905 A EP95917905 A EP 95917905A EP 0771437 A1 EP0771437 A1 EP 0771437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- recording medium
- channel
- module
- paper
- 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
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
-
- 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
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
- G03G15/0142—Structure of complete machines
- G03G15/0147—Structure of complete machines using a single reusable electrographic recording member
- G03G15/0152—Structure of complete machines using a single reusable electrographic recording member onto which the monocolour toner images are superposed before common transfer from the recording member
- G03G15/0163—Structure of complete machines using a single reusable electrographic recording member onto which the monocolour toner images are superposed before common transfer from the recording member primary transfer to the final recording medium
-
- 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
- G03G15/234—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters
- G03G15/237—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters the image receiving member being in form of a continuous web
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- 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
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00443—Copy medium
- G03G2215/00451—Paper
- G03G2215/00455—Continuous web, i.e. roll
- G03G2215/00459—Fan fold, e.g. CFF, normally perforated
-
- 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
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00535—Stable handling of copy medium
- G03G2215/00556—Control of copy medium feeding
- G03G2215/00586—Control of copy medium feeding duplex mode
-
- 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
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00919—Special copy medium handling apparatus
- G03G2215/00924—Special copy medium handling apparatus two or more parallel feed paths
-
- 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
Definitions
- Multifunctional printing device with a modular structure
- the invention relates to a multifunctional electrophotographic printing device for printing on tape-shaped record carriers of different bandwidth with a modular structure.
- EP-Bl-01 54 695 In order to produce multicolor and reverse side printing with electrographic printing devices that work on continuous paper, it is known from EP-Bl-01 54 695 to operate two continuous paper printers one after the other, the paper printed in the first printer being turned over and subsequently in the second printer on the second side is printed. The effort is considerable due to the second printer required.
- a printing device for front and back printing of a tape-shaped recording medium which contains an intermediate carrier with associated toner image-generating units, a transfer printing station which transfers the toner images to the recording medium and a fixing station, each of which has a usable width of at least have twice the bandwidth of the record carrier.
- the recording medium is removed from the fixing station via a return channel. tion to a turning station, in which it is turned and fed to the transfer station again for printing on the reverse side.
- Such a printing device in pure simplex operation, i.e. in the case of single-sided printing e.g. a wide or a plurality of narrow recording media arranged side by side is restricted. They only require duplex operation, i.e. printing on both sides e.g. of a single, narrow recording medium, functional elements such as duplex feedback in the return channel and the turning station require a lot of space and impair the handling.
- the turning station limits the usable stack width (form length) of the recording medium in the storage area.
- the duplex return arranged below the exit area of the fixing station in turn limits the stack height of an internal stacker device.
- the aim of the invention is therefore to provide a multifunctional printing device for printing on the front and / or back of tape-shaped recording media, which enables a simple change of operating mode and which can be operated without restriction both in simplex mode and in duplex mode.
- the two additional units duplex return and reversing unit, are removably attached in a modular manner in the basic mechanism of the printing module. Specifically, this means the following:
- the duplex feedback is mounted on guide rails, which allow the operator to carry the entire unit can be removed in a few simple steps from the working position in the printer. No tools are required for this.
- the mechanical interface is designed in such a way that the unit is automatically centered and fixed in its working position when it is reinstalled in the printer.
- the electrical interface is designed so that the plug connection is automatically restored when it is reinserted in the printer.
- the turning unit is also mounted on guide rails, which allow the operator to remove the complete unit from the working position in the printer with just a few simple steps. No tools are required for this.
- the mechanical interface is designed in such a way that the unit is automatically centered and fixed in its working position when it is reinstalled in the printer.
- the electrical interface is designed so that the plug connection is automatically restored when it is reinserted in the printer.
- a compressed air supply is also required for the turning unit.
- the interface provided for this purpose is also designed so that the plug connection is automatically restored when it is reinserted in the printer.
- the electronic control of the printer recognizes using
- Sensors automatically detect the presence or absence of the duplex return and turning unit. It can thus be determined independently via the printing device that when the duplex return is removed, the maximum paper stack height to be processed in the output tray of the printer is again equal to the height of the duplex return and when the reversing unit is removed, the maximum paper format height to be processed in the input tray of the printer is again equal to the width of the turning area unit can be enlarged.
- the electronic device control automatically switches all device functions to simplex operation, and the electronic device control automatically issues error messages when the printer operator tries to access duplex functions .
- the entire printing system can thus be operated either as a simplex printer with unrestricted simplex functionality or as a duplex printer with full duplex functionality.
- FIG. 1 shows a schematic illustration of an electrographic printing device for printing on tape-shaped recording media in duplex mode
- FIG. 2 shows a schematic illustration of the same electrographic printing device in simplex mode for printing on a single wide recording medium
- FIG. 3 shows a schematic illustration of the same electrographic printing device in simplex mode for parallel printing of two narrow recording media
- FIG. 4 shows a schematic illustration of a turning device arranged in the electrophotographic printing device
- FIG. 5 shows a schematic illustration of the turning device arranged in the electrographic printing device in a side view
- FIG. 6 shows a schematic sectional illustration of the paper guide in the turning device along the section line C-C of FIG. 4,
- FIG. 7 shows a schematic sectional illustration of the paper guide in the turning device along the section line B-B of FIG. 4,
- FIG. 8 shows a schematic illustration of the paper guide in the area of the lateral reversing devices
- FIG. 9 shows a schematic illustration of the turning device in service position
- FIG. 10 shows a schematic illustration of the turning device in the operating position
- FIG. 11 shows a schematic sectional illustration of the printing device
- FIG. 12 shows a schematic illustration of a return device for the turning device
- Figure 13 is a schematic representation of the return device to the turning device from the front and
- Figure 14 is a schematic representation of the return device to the turning device from above.
- An electrographic printing device for printing on tape-shaped recording media 10 of different bandwidth contains an electromotive-driven photoconductor drum as intermediate media 11.
- an electromotive-driven photoconductor drum as intermediate media 11.
- a band-shaped intermediate carrier for example an OPC band, or a magneto-styli arrangement as described, for example, in EP-Bl-0 191 521 can also be used.
- the various units for the electrophotographic process are grouped around the intermediate support 11.
- a charging device 12 in the form of a charging corotron for charging the intermediate carrier 11; a character generator 13 with a light-emitting diode comb for character-dependent exposure of the intermediate carrier 11, which extends over the entire usable width of the intermediate carrier 11; a developer station 14 for coloring the character-dependent charge image on the intermediate carrier 11 with the aid of a one- or two-component developer mix; a transfer printing station 15, which extends over the width of the intermediate carrier 11 and with which the toner images are transferred to the recording medium 10.
- a cleaning station 16 is provided, with a cleaning brush integrated therein with the associated suction device and a discharge device 17.
- the intermediate carrier 11 is driven by an electric motor and moved in the direction of the arrow in printing operation.
- the printing device contains a fixing station 18, which is arranged as a thermal printing fixing station and is arranged as a thermal printing fixing station, which is arranged downstream of the transfer printing station 15, and a feed device 21 with guide rollers for feeding the recording carrier 10, which is arranged downstream of the fixing station to an internal stacking device 22/1 or to an external stacking or other post-processing device 22/2 arranged outside the printing device.
- a fixing station 18 which is arranged as a thermal printing fixing station and is arranged as a thermal printing fixing station, which is arranged downstream of the transfer printing station 15, and a feed device 21 with guide rollers for feeding the recording carrier 10, which is arranged downstream of the fixing station to an internal stacking device 22/1 or to an external stacking or other post-processing device 22/2 arranged outside the printing device.
- the fixing station shown other fixing stations are also possible, for example with a heated or unheated inlet saddle or a cold fixing station.
- the tape-shaped recording medium 10 is made up, for example, as prefolded, continuous paper provided with edge perforations and is based on an internal 23/1 or external 23/2 storage area is fed via feed rollers 24 to a swiveling paper dividing device of the transfer station 15. However, it is also possible to feed a recording medium without edge perforations via a roll feed.
- the recording medium is preferably transported via a transport device 25 assigned to the transfer printing station 15 in the form of transport belts 26 provided with pins, which, guided by drive shafts 27, engage in the peripheral perforations of the recording medium 10.
- a transport-hole-free recording medium is used, a correspondingly adapted transport device is to be provided, which e.g. by friction, controlled by a control arrangement scanning synchronization marks.
- a turning device 28 is arranged in the housing area of the printing device, specifically in a receiving area for the internal supply stack 23/1, the structure and function of which will be explained later and via which the recording medium already printed on the front side is turned over and used for printing on the back side is again supplied to the transfer printing station 15.
- the turning device 28 is connected to the fixing station 18 via a return channel 29.
- the printing device is controlled via a printer control, which is shown schematically here, with a central unit CPU, a page memory SP, which is divided into memory areas depending on the page, and a data control unit DC. All of the control units are connected to one another and to the units of the printing device via a BUS system.
- the electrographic printing device is suitable for printing on recording media with different bandwidths.
- the intermediate carrier 11 (Photoconductor drum) has a usable width which corresponds to the largest possible recording medium width (for example a wide recording medium with a width corresponding to the format DIN A3 landscape). This width corresponds to twice the A4 bandwidth. This makes it possible in the area of
- Transfer station 15 to arrange two narrower recording medium webs in A4 format alongside one another.
- the fixing station 18 and the other electrophotographic units, such as developer station 14, character generator 13, cleaning station 16, are designed in accordance with this usable width.
- Adapting the width of the character generator 13 to different recording medium widths does not require any mechanical change to the character generator if, as in this case, an LED character generator is used, with a large number of LEDs arranged in rows.
- An adaptation to the used recording medium width is done electronically by control.
- Width of the record carrier can be configured to be width-adjustable. This can e.g. can be achieved in that the drive wheels, which carry the conveyor belts (nub belts) engaging in the edge perforations of the recording medium, are slidably mounted on polygonal shafts.
- these transport elements do not interfere with operation with only one wide recording medium, they can be arranged such that they can be plugged in and plugged in or swiveled out, or it is possible to provide the drive wheels 27 of the transport device 25 with retractable pins and knobs.
- the turning device 28, which is coupled to the fixing station 18 via the return channel 29 for narrow recording media, has two functions: on the one hand it serves to move the recording media web laterally so that a parallel guidance in the area of the transfer station 15 is possible, and on the other hand for rotating the recording media from the front to the rear. It can be configured to be switchable depending on the operating mode.
- the printing device according to the invention enables a wide variety of changes without changing the hardware structure
- the narrow, for example DIN A4-wide, recording medium 10 is fed from the storage area 23 via the feed rollers 24 to the transfer station 15 and in a partial transfer area El printed on the top with a front toner image.
- the front of the recording medium 10 is identified by solid transport arrows, the rear by dashed transport arrows.
- the recording medium with the loose, electrostatically adhesive front-side toner image is then fed to the fixing station 18 and the front-side toner image is fixed there.
- the recording medium is then transported further via the return channel 29 to the turning device 28, the deflection contour of which is positioned in a turning position.
- the record carrier is turned through 180 ° with respect to its front and back and is fed again via the feed rollers 24 to the transfer printing device 15 in such a way that its back can be provided with a back toner image in the partial transfer area E2. Thereafter, the recording medium is again fed to the fixing station 18 and the rear-side toner image is fixed, and then the recording medium printed on both sides is deposited in the stacking device 22/1 or output in a cutting device 22/2 or the like for post-processing.
- the page memory SP contains storage areas VS for storing the front side image data and storage areas RS for storing the back side image data.
- the data preparation takes place via the data control device DC, the data starting from a data source
- HOST e.g. can be supplied to an external data memory via an interface of the data control device DC.
- the data of the individual pages to be printed are stored in the page memory SP, separately to the front VS and back RS in the corresponding memory areas.
- the data are then called up in a time-controlled manner so that the desired front-back assignment of the toner images on the recording medium is achieved.
- the recording medium 10 is, as shown in FIG. 2, in a conventional manner, starting from the storage areas (storage stack) 23/1 or 23 / 2 via the feed rollers 24 (paper dividers) to the transfer printing station 15, there provided with toner images and fixed in the fixing station 18 and then in the internal or external sta pel device 22/1, 22/2 filed.
- the transport takes place via the transport device 25, which engages in the edge perforations of the recording medium, the width of the transport device 25 being set in accordance with the width of the recording medium.
- Such a wide recording medium enables e.g. printing with DIN A3 horizontally arranged toner images or with two adjacent A4 A4 toner images.
- the two recording media 10/1, 10/2 are guided in parallel through the printing device with the transfer printing station 15 and the fixing station 18, as shown in FIG. 3.
- the recording medium webs 10/1 and 10/2 are transported via the correspondingly set transport device 25.
- the recording mediums 10/1 and 10/2 are transported on both sides via their edge perforations.
- the middle transport elements can be brought into engagement with the inner perforations of the record carriers 10/1 and 10/2 by extending the corresponding pins. It is also possible to design these inner transport elements as elements that can be fitted as required. In principle, it is also possible to use only the outer transport elements for the transport of the recording media 10/1 and 10/2 in the area of the transfer printing station 15 and thus to transport the recording media webs on one side.
- the turning device 28 (FIG. 4) essentially contains four deflection elements arranged in the manner of the letter W, by means of which the narrow recording medium 10, starting from a paper coupled to the return channel 29 (FIG. 1), inlet channel 30 is passed to a paper outlet channel 31, which in turn feeds the recording medium 10 to the feed rollers 24 (FIG. 2). Paper inlet channel 30 and paper outlet channel 31 are arranged side by side in one plane.
- the recording medium 10 fed to the paper inlet channel 30 via the return channel 29 is first guided via a first oblique deflection device 32 which deflects the recording medium laterally.
- This consists of a hollow deflecting rod 33 or roller arranged at approximately 45 ° to the paper running direction.
- a first reversing device 34 Downstream from the first oblique deflection device 32 in the paper transport direction is a first reversing device 34 with a deflecting element 35 in the form of a hollow profile for returning the recording medium 10 behind the paper channels to the area of an approximately parallel to the first reversing device 34, which again reverses the recording medium 10 second reversing device 36.
- This likewise has a deflecting element 35 in the form of a hollow profile.
- a second oblique deflecting device 37 Downstream of the second reversing device 36 is a second oblique deflecting device 37 deflecting the recording medium 10 into the paper outlet channel 31 with a hollow deflecting rod 33 or
- Deflection rods 33 and deflection elements 35 have wear-resistant polished surfaces as deflection surfaces 38 (FIGS. 6, 7) which serve as sliding surfaces for the recording medium 10 and which are contained in a distance from guide surfaces 40 forming a deflection channel 39.
- the guide surfaces 40 assigned to the deflecting rods 33 of the oblique deflecting devices 32 and 37 are part of flaps 41 made of hollow profiles that can be pivoted away. They are shown in FIG. 4 in the operating position (solid line) and in the pivoting position (broken lines).
- the guide surfaces 40 of the deflection elements 35 consist of spring plates 42, which on the front and rear, swiveling housing flaps 43
- Its length is dimensioned such that in the operating state of the turning device shown in FIG. 4, in which the friction element 49 is located between the oblique deflection devices 32, 37, the friction element 49 is out of engagement with the recording medium 10.
- a recording medium circulation channel 50 with associated switches 51 for introducing and discharging the recording medium 10 in the area of the oblique deflection devices 32, 37.
- this results in a continuous guide channel for the deflection channels 39 the recording medium 10 around the deflecting elements 33, 35 from the paper inlet channel 30 to the paper outlet channel 31.
- the conveyor belt 46 is immersed in the channel sections of the channel between the reversing devices 34, 36
- Recording medium circulation channel and is carried there.
- the channel walls facing the friction lining 49 have roller elements 52 (FIG. 4) in the region of the conveyor belt 46 in order to reduce the friction between the recording medium 10 and the wall surface.
- the recording medium 10 is clamped between the roller elements 52 and the friction lining 49 and thus safely transported through the friction lining 49.
- the transport belt 46 is guided over a transport path (FIG. 8) which runs outside the deflection channel 39 as part of the recording medium circulation channel 50 and which is longer than the transport path of the beginning of the recording medium the deflection channel 39.
- the position of the recording medium 10 relative to the friction lining 49 thus changes in a premature manner
- the turning device is controlled via a microprocessor-controlled threading control arrangement, which can be part of the device control DC. It contains a central control with a microprocessor. This is connected on the input side to an optical sensor S2, which is arranged below the first oblique deflection device 32 and which scans the beginning of the recording medium in the area of the first oblique deflection device 32, and to a sensor SI arranged in the area of the first reversing device 34, which is used as a hall ⁇ sensor can be formed and. which scans the position of the friction element 49 (friction lining) via a magnetic element.
- a microprocessor-controlled threading control arrangement which can be part of the device control DC. It contains a central control with a microprocessor. This is connected on the input side to an optical sensor S2, which is arranged below the first oblique deflection device 32 and which scans the beginning of the recording medium in the area of the first oblique deflection device 32, and to a sensor SI arranged
- the threading control arrangement is coupled to the blower for generating the blown air 56, the drives for the paper transport elements 53 and the paper transport rollers 54 and the conveyor belt drive 48.
- the threading control arrangement detects the beginning of the recording medium in the area of the first oblique deflecting device 32 for threading via the sensor S2, activates the conveyor belt drive 48 as a function thereof and positions it as a function of the position signal of the sensor SI after threading the recording beginning of the carrier up to the paper outlet channel 31, the friction lining 49 in a rest position in which it is out of engagement with the recording medium 10.
- the turning device is designed as an independent, torsion-resistant structural unit in the form of a module and is mounted on telescopic rails 55 in the device in the receiving area 23 for the internal storage stacks 23/1 (FIGS. 9, 10). This means that all deflection elements are freely accessible in the event of paper flow malfunctions and when servicing is required.
- the fan 56 for generating the blown air, the drives for the paper transport elements 53 and the paper transport rollers 54 are activated via the threading control arrangement.
- the friction lining 49 is in the
- FIG. 4 shows the rest position between the inclined steering elements 32, 37.
- the beginning of the tape entering the paper inlet channel 30 is deflected in the deflecting channel 39 of the first inclined deflecting device 32 and detected by the sensor S2.
- the conveyor belt 46 is started. It detects the beginning of the tape via the friction lining 49 and transports it around the first reversing device 34.
- the beginning of the recording medium leads the friction lining 49 somewhat ahead.
- the beginning of the recording medium rotates around the second reversing device 36 and again leads the friction lining 49 somewhat ahead.
- the recording medium start is then pushed over the switch 51 through the second inclined deflection device 37 into the area of the paper transport element 53, is grasped by it and into the area of the paper transport rollers 54 (FIG. 4). transported and from there to the transfer station. This ends the threading process and the friction lining is again out of engagement with the recording medium in the rest position (FIG. 4).
- a return device Arranged in the return channel 29 is a return device (FIG. 12) which serves to guide the recording medium from the fixing station 18 to the turning device 28 after printing on the front side.
- the feedback device contains a pair of motor-driven rollers 57 on the input side with a motor-driven transport roller 58 and a pressure roller 60 that can be pivoted on and off via a lever 59, furthermore a pair of output rollers 61 on the output side with a motor-driven transport roller 62 and a pressure roller 64 mounted on a pivot lever 63 that can be pivoted on and off.
- a connecting channel 65 receiving the recording medium from upper and lower baffles, the channel width of which is dimensioned such that the recording medium is largely prevented from buckling in the channel. For this purpose, it has a clear width of no greater than 15 mm. This ensures that the recording medium does not buckle when the recording medium start is pushed through the connecting channel 65.
- a transport aid consisting of a further motor-driven pair of traction rollers 66 with a motor-driven transport roller 67 and a pressure roller 68 that can be pivoted on and off is arranged between the pair of pull rollers 57 on the input side and the pair of output rollers 61 on the output side, approximately in the middle of the connecting channel.
- the pressure roller 68 is opposite the pressure roller 64 mounted on the opposite side of the swivel lever 63.
- the pivot lever 63 can be pivoted about a rotary axis 69 with the aid of a servomotor 70, which engages on the lever 63 via cams 71 on a shoulder 72 with a compression spring element 76 arranged therein.
- the pivoting lever 59 of the pressure roller 60 of the pair of input rollers 57 on the input side is also coupled to a servomotor 73, which acts on the lever 59 via a cam 74 on a shoulder 75 with an associated compression spring 76.
- the transport rollers 58, 67 and 62 which are made of rubber or silicone, for example, are connected via belts 77 to a central drive motor 78 coupled.
- the pair of traction rollers 57 has a centering device in the form of a centering funnel 79.
- guide plates or the like can also be used.
- the recording media 10, 10/1, 10/2, 10/3 can also consist of pre-folded continuous paper, in which the form fold distances have different lengths. These folds increase the risk of buckling during the sliding process within the connecting channel 65, since the paper web has hardly any buckling stability in the folded area.
- the distance between two pairs of pull rollers, e.g. the pulling roller pairs 57 and 66 or 66 and 61 should therefore have the minimum length of the pre-folded folds
- pre-folded recording media with a minimum folding distance of, for example, 6 inches are known.
- a switch on the output side in the form of a baffle plate 80 which is pivotally coupled to the lever 59.
- a through channel opens between the pressure roller 60 and the transport roller 58 Record carrier which opens into an output channel 81 to the feed device 21 for the internal stacking device 22/1.
- the pressure force of the pressure rollers 60, 64 and 68 of the pairs of rollers can be changed depending on the position of the cams 71 and 74.
- the frictional force on the recording medium 10 located between the transport roller and the pressure roller changes accordingly.
- the feed device is designed as an independent structural unit in the form of an exchangeable return module.
- the module housing 83 is in turn suspended via corresponding guide elements in telescopic rails 84 which are fastened in a receiving area for the module below the fixing station 18 (FIG. 13).
- the feedback module can be pulled out of the receiving area via these rails 84 and thus exchanged or removed.
- a centering device is also assigned to the return device in order to center the return module in the inserted position in the working position (FIG. 14).
- the centering device consists of two centering guides 85 attached to the printer device, into which centering pins 86 attached to the module housing 83 engage.
- the centering devices can be designed such that by coupling the centering pins to the centering guides, the electrical connections for the central drive motor and other electrical components are closed at the same time.
- plug connections 86/1 FIG. 13
- This plug can contain a switch, via which the correct connection of the centering device and thus also its presence is sensed and reported to the device controller DC in the form of electrical signals.
- the internal stacking device 22/1 arranged below the receiving area for the return module has a feed device 21 which can be moved as a function of the stack height.
- the feed device 21 contains a centering funnel 87 and a pair of traction rollers from a motor-driven transport roller 88 with an associated pressure roller
- the feed device 21, which is integrated in the upper part of the stacker 22/1, can be raised and lowered via chains 90. It is thus possible to position the feed device 21 with the pair of feed rollers in the area of the output channel 81 when the return module is inserted and in the area of the recording medium outlet area of the fixing station 18 if the print module is not present. Function of the feedback device
- the beginning of the recording medium is fed to the pair of feed rollers 57 via the centering funnel 79 when the return module is inserted.
- the pressure rollers of the pair of feed rollers 57 on the input side, of the pair of central feed rollers 66 and of the pair of feed rollers 61 on the output side are pivoted.
- the pair of feed rollers 57 detects the start of the recording medium and transports it with the support of the pair of central feed rollers 66 and the pair of feed rollers 61 on the output side into the paper inlet channel 30 of the turning device 28, where it is picked up by the transport elements arranged there and threaded through the turning device 28.
- the friction force in particular in the area of the feed rollers 57 on the input side, is dimensioned by rotating the cams 74 such that the recording medium does not tear off in the area of the fixing station.
- the beginning of the recording medium is pushed through the transfer printing station and at the same time the back is printed. It then passes via the paper exit channel 29 of the fixing station 18 into an output channel 91 arranged next to the return channel 29 through the return module into the area of the feed device 21 of the internal stacking device and is detected by it.
- the pressure rollers 64 and 68 of the feed rollers of the central feed roller pair 66 and of the output-side feed roller pair 61 are then pivoted away, so that only the driving force of the input-side feed roller pair 57 acts.
- This is dimensioned by positioning the cam 74 so that it does not act on the paper tensile force in the fixing station 18 and there has a negative influence on the paper flow.
- the tensile force must not be so high that, when the recording medium passes through the fixing and pressure roller, there is a slip in the fixing station which causes the print image
- Reversible module can be replaced. This also applies to the feed module.
- electrostatic printing device is also intended to include printing or copying devices which use magnetographic or electrostatic recording methods.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Handling Of Sheets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4425074 | 1994-07-15 | ||
DE4425074 | 1994-07-15 | ||
DE4435757 | 1994-10-06 | ||
DE4435757 | 1994-10-06 | ||
PCT/DE1995/000635 WO1996002872A1 (de) | 1994-07-15 | 1995-05-12 | Multifunktionale druckeinrichtung mit modularem aufbau |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0771437A1 true EP0771437A1 (de) | 1997-05-07 |
EP0771437B1 EP0771437B1 (de) | 1999-07-07 |
Family
ID=25938384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95917905A Expired - Lifetime EP0771437B1 (de) | 1994-07-15 | 1995-05-12 | Multifunktionale druckeinrichtung mit modularem aufbau |
Country Status (5)
Country | Link |
---|---|
US (1) | US5790924A (de) |
EP (1) | EP0771437B1 (de) |
JP (1) | JP2000510959A (de) |
DE (1) | DE59506364D1 (de) |
WO (1) | WO1996002872A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29823854U1 (de) | 1997-03-26 | 2000-03-30 | Oce Printing Systems Gmbh | Druck- oder Kopiergerät mit eine Identifizierungsanordnung aufweisenden austauschbaren Teilaggregaten, Teilaggregat sowie Tonerbehälter zur Verwendung in einem solchen Gerät |
DE19718417C2 (de) | 1997-04-30 | 1999-03-04 | Oce Printing Systems Gmbh | Verfahren zum Steuern eines Druckers |
US5875383A (en) * | 1997-09-30 | 1999-02-23 | Xerox Corporation | Dual mode interchangeable modules cut sheet or web printing system with a single xerographic cut sheet print engine |
US5848345A (en) * | 1997-09-30 | 1998-12-08 | Xerox Corporation | Two sided imaging of a continuous web substrate with moving fusers |
US5860053A (en) * | 1997-09-30 | 1999-01-12 | Xerox Corporation | Two sided imaging of a continuous web substrate with a single print engine with alternating transfer stations |
US5878320A (en) * | 1997-09-30 | 1999-03-02 | Xerox Corporation | Continuous imaging of a continuous web substrate with a single print engine with a photoreceptor belt seam |
US5970304A (en) * | 1997-09-30 | 1999-10-19 | Xerox Corporation | Two sided imaging of a continuous web substrate with a single print engine with in line transfer stations |
US6018640A (en) * | 1999-03-31 | 2000-01-25 | Hewlett-Packard Company | Image alignment during duplex printing |
US6167231A (en) | 1999-03-31 | 2000-12-26 | Hewlett-Packard Company | Print recording apparatus having modular autoduplex mechanism |
US6261012B1 (en) | 1999-05-10 | 2001-07-17 | Fargo Electronics, Inc. | Printer having an intermediate transfer film |
DE10132625A1 (de) * | 2001-07-05 | 2003-01-23 | Oce Printing Systems Gmbh | Verfahren, Computerprogrammprodukt und Gerätesystem zum visuellen Überprüfen von Bilddaten |
WO2003017007A1 (fr) * | 2001-08-09 | 2003-02-27 | Fuji Xerox Co., Ltd. | Imprimante |
US6705786B2 (en) | 2002-04-11 | 2004-03-16 | Hewlett-Packard Development Company, L.P. | Duplex printing of print sheets |
US8956490B1 (en) | 2007-06-25 | 2015-02-17 | Assa Abloy Ab | Identification card substrate surface protection using a laminated coating |
DE102013107451A1 (de) | 2013-07-15 | 2015-01-15 | Océ Printing Systems GmbH & Co. KG | Druckeinrichtung zum beidseitigen Bedrucken eines bandförmigen Bedruckstoffs |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6042774A (ja) * | 1983-08-18 | 1985-03-07 | Fuji Xerox Co Ltd | 自動両面複写機 |
DE3406244A1 (de) * | 1984-02-21 | 1985-08-22 | Siemens AG, 1000 Berlin und 8000 München | Laserdrucksystem fuer mehrfarben- und rueckseitendruck |
US4766467A (en) * | 1985-11-28 | 1988-08-23 | Mita Industrial Co. Ltd. | Electrostatic copying apparatus and auxiliary unit capable of being detachably mounted thereon |
JPS63171743A (ja) * | 1986-12-30 | 1988-07-15 | Toshiba Corp | 両面複写機用複写紙搬送装置 |
US4905053A (en) * | 1987-01-28 | 1990-02-27 | Minolta Camera Kabushiki Kaisha | Sheet re-feeding apparatus provided for image forming apparatus |
JP2656630B2 (ja) * | 1989-08-31 | 1997-09-24 | キヤノン株式会社 | 両面印字用搬送路を備える画像形成装置 |
EP0505418B1 (de) * | 1989-12-13 | 1994-04-20 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Elektrofotografische druckeinrichtung für endlospapier mit einer thermo-druckfixierstation |
EP0432298A1 (de) * | 1989-12-13 | 1991-06-19 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Automatische Papiereinlegeeinrichtung für eine elektrofotografische Druckeinrichtung |
DE59202164D1 (de) * | 1991-03-11 | 1995-06-14 | Siemens Nixdorf Inf Syst | Umlenkeinrichtung zum umlenken eines bandförmigen aufzeichnungsträgers zwischen zwei schnelldruckeinrichtungen. |
JPH0566622A (ja) * | 1991-09-05 | 1993-03-19 | Toshiba Corp | 画像形成装置 |
DE9218167U1 (de) * | 1992-10-22 | 1993-08-26 | Siemens Nixdorf Informationssysteme AG, 33106 Paderborn | Elektrofotografisches Druckgerät mit einer Anordnung zum automatischen Zuführen eines bandförmigen Aufzeichnungsträgers |
EP0699315B1 (de) * | 1993-05-19 | 1996-10-30 | Siemens Nixdorf Informationssysteme AG | Elektrografische druckeinrichtung zum bedrucken von bandförmigen aufzeichnungsträgern unterschiedlicher bandbreite |
DE4335473C2 (de) * | 1993-10-18 | 2001-07-12 | Oce Printing Systems Gmbh | Wendeeinrichtung für einen bandförmigen Aufzeichnungsträger |
DE59400220D1 (de) * | 1994-08-19 | 1996-05-23 | Siemens Nixdorf Inf Syst | Wendeeinrichtung für bandförmige Aufzeichnungsträger |
-
1995
- 1995-05-12 US US08/624,460 patent/US5790924A/en not_active Expired - Fee Related
- 1995-05-12 DE DE59506364T patent/DE59506364D1/de not_active Expired - Fee Related
- 1995-05-12 EP EP95917905A patent/EP0771437B1/de not_active Expired - Lifetime
- 1995-05-12 WO PCT/DE1995/000635 patent/WO1996002872A1/de active IP Right Grant
- 1995-05-12 JP JP08504563A patent/JP2000510959A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9602872A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2000510959A (ja) | 2000-08-22 |
WO1996002872A1 (de) | 1996-02-01 |
US5790924A (en) | 1998-08-04 |
DE59506364D1 (de) | 1999-08-12 |
EP0771437B1 (de) | 1999-07-07 |
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