EP0432298A1 - Dispositif automatique d'introduction de papier pour une installation d'impression électrophotographique - Google Patents

Dispositif automatique d'introduction de papier pour une installation d'impression électrophotographique Download PDF

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Publication number
EP0432298A1
EP0432298A1 EP89123026A EP89123026A EP0432298A1 EP 0432298 A1 EP0432298 A1 EP 0432298A1 EP 89123026 A EP89123026 A EP 89123026A EP 89123026 A EP89123026 A EP 89123026A EP 0432298 A1 EP0432298 A1 EP 0432298A1
Authority
EP
European Patent Office
Prior art keywords
paper
station
paper guide
fixing
fixing station
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.)
Withdrawn
Application number
EP89123026A
Other languages
German (de)
English (en)
Inventor
Josef Dipl.-Ing.(Fh) Windele
Peter Rumpel
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.)
Wincor Nixdorf International GmbH
Original Assignee
Siemens AG
Wincor Nixdorf International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Wincor Nixdorf International GmbH filed Critical Siemens AG
Priority to EP89123026A priority Critical patent/EP0432298A1/fr
Publication of EP0432298A1 publication Critical patent/EP0432298A1/fr
Withdrawn legal-status Critical Current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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6517—Apparatus for continuous web copy material of plain paper, e.g. supply rolls; Roll holders therefor
    • G03G15/6526—Computer form folded [CFF] continuous web, e.g. having sprocket holes or perforations
    • 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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2064—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat combined with pressure
    • 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
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00371—General use over the entire feeding path
    • 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
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00413—Fixing device
    • 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
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00417—Post-fixing device
    • G03G2215/00421—Discharging tray, e.g. devices stabilising the quality of the copy medium, postfixing-treatment, inverting, sorting
    • 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
    • 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
    • G03G2215/00544—Openable part of feed path

Definitions

  • the invention relates to a paper insertion device according to the features of claim 1.
  • Non-mechanical printing devices e.g. Laser printers with LED combs, printing devices or magnetic printers are generally known and have been used successfully.
  • a latent image is generally produced with the aid of a laser or with the aid of magnetic recording media on a photoconductor drum or a magnetosensitive drum, which is developed by applying toner in a developer station and then in the subsequent transfer printing station onto a tape-shaped recording medium in the form of a perforated edge provided continuous paper is transferred.
  • the image consisting of toner, which is loosely on the continuous paper, is fixed with the aid of a fixing device and then placed on a paper storage surface by means of an automatic paper stacker.
  • Such non-mechanical fast printing devices are operated together with EDP systems and operated and serviced by the same operating personnel. For this reason, the printing devices must be designed so that an almost uninterrupted printing operation is guaranteed. After a stack of paper has been consumed, it must therefore be possible to insert a new stack of paper very quickly without a substantial interruption time. Such printing devices must therefore be designed to be ergonomically optimal, this applies in particular to the insertion and removal of the paper and to the maintenance of the overall system.
  • the paper loading and removal of the paper when the printer starts up and when printing is interrupted is difficult and unwieldy.
  • the transfer station is removed from the intermediate carrier, e.g. a photoconductor drum, swiveled and the paper inserted into the printing device by hand.
  • the paper must be threaded through the entire printer by hand before the start of printing. This is complicated and causes disruptive downtimes.
  • the paper guide in the area of the transfer printing station and there in the area of the transfer printing point is particularly problematic. It must be ensured that the paper is taut and without play around the transfer station during printing. Fluttering of the paper in the area of the transfer printing point leads to malfunctions in the transfer printing process and thus to a deterioration of the typeface, e.g. in the form of wiping pressure or the like.
  • the paper transport device at the transfer printing station must be designed so that a synchronous running of the paper with the photoconductor drum is guaranteed.
  • Tractors of this type generally consist of a tractor belt with tractor flaps arranged above it, which press the paper against the tractor belt. While generally the out are easily accessible on the aisle-side paper tractors, depending on the type, it is difficult to operate the input-side tractor flaps.
  • the object of the invention is to provide a paper insertion device for continuous paper in the transport elements of a non-mechanical printing device, which enables simple insertion of the continuous paper.
  • the insertion should run as automatically as possible.
  • the paper is first inserted into the incoming feed beads of the paper transport and then a threading procedure is automatically triggered. This means that the paper is automatically threaded through the printing device to the paper tray. The insertion of the paper is made extremely easy.
  • the transfer printing station has a between an operating position and coupled to a loading position pivotable actuating rocker, in a pivoted-down position, correspondingly coupled paper guide elements form an expanded paper guide channel for inserting or removing the continuous paper into the transfer printing station.
  • a printing device operating on the principle of electrophotography has a supply table 10 for receiving a supply stack 11 made of pre-folded continuous paper 12.
  • the continuous paper is fed to the actual electrophotographic printing unit 15 via a paper dividing device 13 and a pivoting actuating rocker 14 provided with paper guide elements.
  • This printing unit 15 has a transfer printing station 17, which can be swiveled in and out of a photoconductor drum 16, and devices which are arranged around the photoconductor drum 16 and are necessary for the electrophotographic process.
  • the photoconductor drum 16 charged with the aid of a charging device 18 is discharged in a customary manner via an LED character generator 19, and the charge image thus generated is colored in a developer station 20 with a developer mixture of toner and carrier particles.
  • the toner image is then transferred to the continuous paper 12 in the transfer printing station 17.
  • the photoconductor drum 16 is unloaded via an unloading station 21 and cleaned in a cleaning station 22 and recharged via the charging device 18.
  • the electrophotographic process described it is also possible to generate the toner image on the endless paper 12, for example, to use an electrostatic process or a magnetic process or even an ink comb that applies ink directly to the continuous paper.
  • the paper web 12 provided with a toner image is then fixed chemically or by heat in a fixing station 23 and placed on a deposit table 24.
  • the storage table 24 is designed so that it can be swung out via a pivoting lever 25 to facilitate the removal of the printed paper stack 26.
  • the paper web 12 can also be fed directly to the paper dividing device 13 via external paper feed channels 27. Furthermore, it is possible to use an external endless supply stack 28 as a supply stack. Separate paper feed elements with paper rollers 29 may be necessary to feed the paper web.
  • a particle trap 30/1, 30/2 is arranged either at the entrance area to the transfer printing station 17 or in the transfer printing station.
  • the printing device also has a paper loading device which can be activated via the actuating rocker 14 and has an associated paper brake 31.
  • a paper dividing device 13 is arranged at the entrance of the feed channel to the printing unit 15 above the paper stack 11 (FIG. 2).
  • This paper dividing device contains a first deflection element in the form of a rotatably mounted paper roller 32, which is arranged between two side parts 33 of the actuating rocker 14 at its free pivot end. Furthermore, it contains a second deflection element in the form of a motor-driven paper roller 34 which is arranged in a stationary manner on two fixed support elements 35 connected to the housing of the printing device.
  • the motor-driven paper roller 34 is located in the swivel range of the actuating rocker 14.
  • a paper guide element 36 is arranged at a distance forming a passage for the paper web.
  • the paper guide element is designed such that it forms, together with other sheet metal elements, a collecting basket 38 for the first peeled-off folder of the paper web.
  • operating position i.e. when the actuating rocker 14 is swung up, the continuous paper web 12 is first guided in a first deflection direction over the first deflection element 32.
  • a first paper layer 37 adhering to the outside of the paper web with respect to the paper roller 32 is peeled off with its folded edge from the paper guide element 36 and penetrates into the collecting basket 38.
  • the first paper layer 37 is fanned out during further transport.
  • a second paper layer adhering to the inside of the paper roller 32 is guided by the paper web 12 around the paper roller 32 with the first deflection direction and then detaches from the second deflection element (paper roller 34) by the deflection and falls downward. This also leads to a fanning out of the paper layer, so that an expanded continuous paper web 12 is available for further transport via a paper guide element 40 arranged between the side parts 33 of the actuating rocker 17.
  • the actuating rocker 14 not only forms part of a paper dividing device 13, but is an essential functional element of a paper insertion device for inserting the continuous paper 12 into the printing device.
  • the actuating rocker 14 is mechanically coupled to the transfer printing station 17 such that when the actuating rocker 14 is pivoted from a loading position A into an operating position B, the transfer printing station 17 pivots on the photoconductor drum 16 or when pivoting from position B into the position A swings down.
  • the actuating rocker 14 is rotatably mounted in the area of the transfer printing station on an axis 41 fixed to the frame via holding elements 42.
  • the transfer station itself is also pivotally mounted on an axis that is fixed to the frame.
  • the transfer station contains a tractor drive with two tractor belts 44 which engage laterally in the edge perforations of the continuous paper 12 with transport nipples 45 arranged thereon.
  • the tractor belts 44 are guided and mounted on two drive wheel pairs 46 which are connected to one another via axles, the drive of the tractors via a motor M ( FIG 2) takes place, which is coupled to the large pair of drive wheels.
  • the continuous paper 12 When the continuous paper 12 is transported, the continuous paper is in engagement with the tractor belts 44 via its perforation holes in the transport direction of the paper both before and after the transfer area of the transfer station.
  • Four transport flaps 50 are provided as securing and guiding elements for the continuous paper, which hold the continuous paper Press in the area of the perforation holes against the tractor belts 44.
  • the transfer station 17 is mounted with respect to its pivot point in such a way that the paper guided in the transfer area via the transfer station 17 immediately lifts off the photoconductor drum without grinding there.
  • the transfer printing station 17 is pivoted to the photoconductor 16 and paper guide elements give the transfer printing area free. If the actuating rocker 14 is pivoted into position A, a paper guide plate is guided into the area between the photoconductor drum and transfer printing station and an expanded paper guide channel opens between transfer printing station 17 and paper element.
  • the paper guide element protects the photoconductor drum 16 in the transfer printing area against the entry of light and damage.
  • a paper insertion plate 68 is fixedly arranged, which interacts with a round paper guide area 69 of the actuating rocker 14.
  • the paper guide area 69 serves as a paper deflection element for the paper web.
  • a paper guide channel 80 is provided above the transfer station 17 in the paper transport direction.
  • This paper guide channel 80 consists of a flat traverse 81 with a cover plate covering the width of the paper web and a wall plate 82 arranged at a distance from it.
  • a paper guide plate 84 paper guide flap
  • the paper guide plate has the function of a loop puller and serves as a paper length buffer in order to compensate for different paper transport speeds between transfer printing station 17 and fixing station 23 due to mechanical tolerances, different types of drive (friction drive-tractor drive) etc.
  • the position of the paper guide flap 84 is sensed by two sensors 84/1 and 84/2 and the drive of the fixing station 23 is controlled as a function thereof. For example, the fuser drive runs quickly ler than that of the transfer printing station 23, the lower sensor 84/2 is actuated and the fixing station 23 braked. If the transfer printing station 23 runs slower than the fixing station, the paper flap 84 is deflected more strongly and this deflection is detected by the sensor 84/1.
  • a suction chamber 85 is also arranged, which extends over the entire width of the paper guide channel and which interacts with a vacuum generating device, not shown here.
  • the suction chamber has the function of a paper brake in order to be able to brake the paper safely when the paper transport is interrupted and to ensure an even retention force of the paper during transport through the fusing station.
  • the paper guide channel 80 feeds the paper to the fixing station 23.
  • the fixing station 23 is designed as a thermal fixing station. It consists of a heating roller 86 heated by radiators and a pressure roller 87 which can be pivoted and pivoted to the heating roller 86 by an electric motor via a cam 87/1. Furthermore, it has an oiling device 88 which serves to apply separating oil to the heating roller 86 and the heating roller possibly to clean.
  • the oiling device 88 has an oil pan 89, one side wall of which serves as a paper guide element for the continuous paper. Below the oil pan 89 of the oiling device there is a cooling profile 90 through which air flows for heat dissipation.
  • an outlet roller saddle 91 is arranged below the heating roller and the pressure roller, on which paper rollers are arranged and which serves to forward the continuous paper after the fixing.
  • a paper guide saddle 93 which can be pivoted about an axis 92, is arranged between the fixing station with the heating roller 86 and the pressure roller 87 and the paper guide channel 80 and can be pivoted in and out on the heating roller 86 with the aid of a cam 94 driven by an electric motor, depending on the position of the cam.
  • the cam 94 enables three positions of the paper guide saddle 93. These Positions are marked with AP, BP and CP. In the position AP, the paper guide saddle 93 is almost pivoted onto the heating roller 86. This represents the operating position or printing position.
  • the continuous paper is guided around the heating roller 86 at a wrap angle denoted by U.
  • the pressure roller 87 is pivoted to the heating roller 86.
  • the wrap angle U can be controlled.
  • the paper guide saddle 93 is in a loading position. It is pivoted away from the heating roller 86 at a distance, the distance being such that in this state the continuous paper can easily be passed through the fixing station without coming into contact with the heating roller 86.
  • the pressure roller 87 is also pivoted away.
  • a paper feed-through channel is thus formed through the fixing station via the paper guide saddle and the fixing station in the open state in connection with the outlet roller saddle.
  • the further pivoted position C of the paper guide saddle 93 defines the so-called standby position. This is the position where the paper web is completely exposed. This position is taken when printing is interrupted.
  • a stacking device 99 is arranged in order to be able to securely deposit the continuous paper on the deposit table 24.
  • This stacking device can be shifted in position with the aid of a drive device 101 (electric motor) with respect to the storage table 24.
  • It contains funnel-shaped insertion profiles 95, which serve to take over the continuous paper in the raised state of the stacking device and to safely feed the paper guided over the discharge roller saddle 91 to two paper transport rollers 96 driven by an electric motor.
  • the paper transport rollers 96 are usual Paper rolls with rubber covering.
  • a paper guide channel 97 Downstream of the paper transport rollers 96 is a paper guide channel 97, which is formed by guide plates, a scanning device 98 for the continuous paper being arranged in the paper guide channel 97.
  • the scanning device is designed as a conventional light barrier.
  • the stacking device 99 also has paddle shafts 100 for the secure storage of the continuous paper 12.
  • a microprocessor-controlled control arrangement D is provided for the paper transport, the transfer printing station, the fixing station and the stacking device 99 (FIG. 2).
  • the control arrangement D can be part of the device control C, which e.g. can be designed according to US Pat. No. 4,593,407.
  • the control arrangement D controls the loading process and the monitoring of the individual elements of the paper loading device, e.g. the elements of the fixing station 23, the drive of the paper transport rollers 96, the drive of the cams 94 and the tractor drive M (motor) of the transfer station 17. Furthermore, it detects a large number of input signals, e.g. the scanning signal of the scanning device 98 or a switch 120 scanning the position of the actuating rocker 14 and the position of the sensors 84/1 and 84/2.
  • the entire paper loading device works as follows:
  • the actuating rocker 14 is pivoted into the position A via a handle 81. This position is sensed via the switch 82 (FIG. 2).
  • the transfer printing station 17 is pivoted away and paper guide elements cover the photoconductor drum 16 and open a wide paper insertion channel.
  • the paper can be passed through this paper insertion channel through the printing station and hooked into the tractor belts 44 on the output side. They are hung up so that the end of the first sheet comes to rest on the flap of the paper guide plate 84 acting as a loop puller.
  • the first sheet of continuous paper is thus located in the feed area of the paper guide channel 80.
  • the transport flaps of the tractor belts on the driven side are then closed. Now the actual insertion procedure controlled by the control arrangement D begins.
  • the paper guide saddle 93 is brought into the loading position B via the cam 94 via the control arrangement D.
  • the control arrangement D switches off the further paper transport and moves the paper guide saddle 93 into the standby position C. This creates a loop of the continuous paper. The paper length released in this process is transported out via the paper transport rollers 96, which are then switched off.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Handling Of Sheets (AREA)
EP89123026A 1989-12-13 1989-12-13 Dispositif automatique d'introduction de papier pour une installation d'impression électrophotographique Withdrawn EP0432298A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP89123026A EP0432298A1 (fr) 1989-12-13 1989-12-13 Dispositif automatique d'introduction de papier pour une installation d'impression électrophotographique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89123026A EP0432298A1 (fr) 1989-12-13 1989-12-13 Dispositif automatique d'introduction de papier pour une installation d'impression électrophotographique

Publications (1)

Publication Number Publication Date
EP0432298A1 true EP0432298A1 (fr) 1991-06-19

Family

ID=8202224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123026A Withdrawn EP0432298A1 (fr) 1989-12-13 1989-12-13 Dispositif automatique d'introduction de papier pour une installation d'impression électrophotographique

Country Status (1)

Country Link
EP (1) EP0432298A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235704C1 (de) * 1992-10-22 1994-03-31 Siemens Nixdorf Inf Syst Längenpuffer für ein elektrografisches Druck- oder Kopiergerät
US5667125A (en) * 1993-07-28 1997-09-16 Oce Printing Systems Gmbh Device for transporting printing media in printers or copiers
US5790924A (en) * 1994-07-15 1998-08-04 Siemens Nixdorf Informationssystem Aktiengesellschaft Multi-functional printer device having modular structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429984A (en) * 1981-03-18 1984-02-07 Minolta Camera Kabushiki Kaisha Copying machine with traction feed

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429984A (en) * 1981-03-18 1984-02-07 Minolta Camera Kabushiki Kaisha Copying machine with traction feed

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
FEINWERKTECHN. & MESSTECHN., Jrg. 86, Nr. 2, März 1978, Seiten 80-84; G. TURINI et al.: "Die Fixierung des Druckbildes beim neuen Siemens Laserdrucker 3352" *
IBM JOURNAL OF RESEARCH AND DEVELOPMENT, Band 22, Nr. 1, Januar 1978, Seiten 13-18, New York, US; R.G. SVENDSEN: "Paper path of an on-line computer-output printer" *
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 182 (P-90)[854], 20. November 1981; & JP-A-56 110 969 (HITACHI KOKI K.K.) 02-09-1981 *
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 221 (P-153)[1099], 5. November 1982; & JP-A-57 124 774 (HITACHI KOKI K.K.) 03-08-1982 *
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 23 (P-171)[1168], 29. Januar 1983; & JP-A-57 176 067 (CANON K.K.) 29-10-1982 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235704C1 (de) * 1992-10-22 1994-03-31 Siemens Nixdorf Inf Syst Längenpuffer für ein elektrografisches Druck- oder Kopiergerät
US5667125A (en) * 1993-07-28 1997-09-16 Oce Printing Systems Gmbh Device for transporting printing media in printers or copiers
US5790924A (en) * 1994-07-15 1998-08-04 Siemens Nixdorf Informationssystem Aktiengesellschaft Multi-functional printer device having modular structure

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