EP0234589B1 - Papiertransportvorrichtung für Druckeinrichtungen - Google Patents

Papiertransportvorrichtung für Druckeinrichtungen Download PDF

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Publication number
EP0234589B1
EP0234589B1 EP87102805A EP87102805A EP0234589B1 EP 0234589 B1 EP0234589 B1 EP 0234589B1 EP 87102805 A EP87102805 A EP 87102805A EP 87102805 A EP87102805 A EP 87102805A EP 0234589 B1 EP0234589 B1 EP 0234589B1
Authority
EP
European Patent Office
Prior art keywords
paper
roller
feed roller
paper feed
pressure roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87102805A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0234589A2 (de
EP0234589A3 (en
Inventor
Jeffrey Lee Gates
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0234589A2 publication Critical patent/EP0234589A2/de
Publication of EP0234589A3 publication Critical patent/EP0234589A3/de
Application granted granted Critical
Publication of EP0234589B1 publication Critical patent/EP0234589B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/08—Sound-deadening, or shock-absorbing stands, supports, cases or pads separate from machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles

Definitions

  • the invention relates to a paper transport device with rollers for feeding and removing continuous paper for printing devices.
  • Noise protection covers have also been used in this context.
  • the continuous paper is fed from a paper supply through a slot in the rear wall of the soundproofing cover to the printing device.
  • the side edges of the continuous paper are protected by special precautions on the way between the said entry slot and the printing device.
  • the paper is again guided to the rear wall of the soundproofing cover and is transported out of the soundproofing cover again through a second slot, which is located above the first.
  • the continuous paper is then collected on a table, on the floor or in a basket.
  • FR-A-90 77 83 describes a paper transport device with a first roller, from which a paper web is unwound, a second roller on which the paper web is wound, and an intermediate third roller, with the paper web located on the first two rollers is in contact.
  • the first two rollers rotate at certain speeds, which depend on the diameter of the paper being wound during the operation of the transport device.
  • the transport speed of the paper web always corresponds to the peripheral speed of the two first-mentioned rolls wound with paper. There is no direct and non-positive connection between the shafts of the first two rolls.
  • the invention has for its object to provide a paper transport device for feeding and removing continuous paper for printing devices, which ensures trouble-free, in particular paper jam-free feeding and removal of the paper to and from the printing device over an arbitrary long period of time.
  • the transport device does not require an additional motor or any other drive unit.
  • the energy for the operation of the transport device is taken from the energy with which the printing device draws in the continuous paper.
  • This paper inevitably passes through the nip between the paper feed roller and the paper pressure roller.
  • the pressure these two rollers exert on one another is sufficient to pass the continuous paper between them with practically no slippage and to drive them at the same time.
  • the force transmission means between the paper feed roller and the paper feed roller cause an inevitable rotation of the paper feed roller, which also bears against the paper pressure roller, so that the paper feed roller, the paper feed roller and the paper pressure roller rotate simultaneously.
  • the printed continuous paper running out of the printing device is passed between the paper pull-out roller and the paper pressure roller and thus inevitably transported away from the printing device.
  • the transport system consisting of the three rollers can also be easily arranged on a soundproofing device, for example in the rear wall of a soundproofing hood covering the pressure device. Since the three rollers lie close together and thereby the opening in practically completely seal the rear wall of the noise protection hood, the desired sound insulation is guaranteed in addition to the reliable paper transport.
  • the clear distance between the paper feed roller and the paper feed roller is smaller than the diameter of the paper pressure roller.
  • the paper pressure roller can easily be pressed simultaneously onto the paper feed roller and the paper extraction roller. This largely prevents slippage between the rollers and the continuous paper, and the nips are kept very small.
  • the paper pressure roller can be pressed against both the paper feed roller and the paper extraction roller by means of springs. This allows the pressure of the paper pressure roller to be adjusted to the thickness and quality of the continuous paper.
  • the spring force also helps to reduce the slippage between the continuous paper and the rollers.
  • gears or toothed belt pulleys with a toothed belt are provided as force transmission means between the paper feed roller and the paper extraction roller. This construction is very simple and inexpensive to manufacture.
  • the force transmission means are dimensioned such that the paper pull-out roller rotates at a higher peripheral speed compared to the paper feed roller.
  • a constant transport of the continuous paper is achieved and it is excluded that a paper jam occurs between the printing device and the paper extraction roller.
  • the higher peripheral speed of the paper draw-out roller causes a constant, directed away from the printing device on the continuous paper. This train is always kept small by a slip between the continuous paper on the one hand and the paper pull-out roller and the paper pressure roller on the other.
  • the paper feed roller, the paper extraction roller and the paper pressure roller each have a shaft made of steel and a roller surface made of foam.
  • a particularly preferred embodiment of the paper transport device consists in the fact that the paper feed roller, the paper extraction roller and the paper pressure roller are arranged in a wall of a soundproof housing for the printing device.
  • the soundproof housing 1 shows a section through a soundproof housing 1 in the region of its rear wall 2.
  • the soundproof housing 1 is provided with a cover 3 which can be opened and closed via a hinge 4.
  • the soundproof housing 1 and the cover 3 are lined on the inside with a sound-insulating foam 5.
  • a paper feed roller 8, a paper pressure roller 9 and a paper extraction roller 10 are rotatably supported one above the other in the rear wall 2 of the soundproof housing 1.
  • These three rollers 8, 9, 10 have approximately the have the same diameter from 30 to 35 mm and are each constructed from a metal shaft 11, 12, 13 and a foam layer 14, 15, 16 applied thereon.
  • This foam is a very dense sound-insulating foam, which is available, for example, under the trade name PE 60.
  • the length of the rollers 8, 9, 10 is, for example, approximately 420 mm each.
  • the roll circumference is exactly cylindrical, which is achieved by turning the foam rubber on a lathe.
  • the paper feed roller 8 and the paper feed roller 10 are positioned vertically one above the other at a distance. This distance is less than the diameter of the paper pressure roller 9, so that it is laterally offset in the direction of the outside of the soundproofing housing 1 between the paper feed roller 8 and the paper extraction roller 10 and bears against these two rollers 8, 10.
  • a coil spring 17 it is indicated schematically that the paper pressure roller 9 is pressed against the paper feed roller 8 and the paper extraction roller 10, with a coil spring 17 being located at each end of the paper pressure roller 9.
  • a toothed belt pulley 22 is attached to one end of the metal shaft 11 of the paper feed roller 8.
  • a toothed belt 23 connects the toothed belt pulley 22 with a further toothed belt pulley 24 at one end of the metal shaft 13 of the paper pull-out roller 10.
  • the paper feed roller 8 and the paper pull-out roller 10 are non-positively connected to one another, and at the same time the toothed belt pulleys 22, 24 and the toothed belt 23 are independent of the paper pressure roller 9.
  • the sizes of the toothed belt pulleys 22, 24 are such that the paper pull-out roller 10 rotates at a higher peripheral speed than the paper feed roller 8.
  • the system of toothed belt pulleys 22, 24 and toothed belt 23 can also be replaced only by toothed wheels, such as intermediate pinions, or equivalent power transmission means.
  • the position and the direction of movement of the continuous paper brought up to the printing device 6 by the transport device are represented by a dashed line 25 and an arrow 26.
  • the continuous paper leaving the printing roller 7 of the printing device 6 is explained in a corresponding manner by the dashed line 27 and the arrow 28.
  • FIG. 2 shows a view of one end of the paper feed roller 8 and the paper extraction roller 10 with their storage in a bearing plate 19 (partially broken open) and with the force transmission means in the form of the toothed belt pulleys 22, 24 and the toothed belt 23.
  • FIG 2 the paper pressure roller 9 omitted.
  • the paper feed roller 8 is shown with its storage in the view
  • the paper extraction roller 10 is shown with its storage in section. It can be seen that both rollers 8, 10 with their metal shafts 11, 13 are each mounted in a plastic sleeve 20.
  • a toothed belt pulley 22, 24 is fastened on the metal shaft 11 of the paper feed roller 8 and on the metal shaft 13 of the paper extraction roller 10 by means of axially fastened screws 29.
  • the toothed belt 23 runs over the toothed belt pulleys 22, 24.
  • Fig. 3 shows an insight into the soundproofing housing 1 with the cover 3 open in the direction of the rear wall 2 of the soundproofing housing 1.
  • a continuous paper 27 emerging from the printing device 6 is guided out of the soundproofing housing 1 through the nip between the paper pressure roller 9 and the paper extraction roller 10.
  • Fig. 4 shows a view of the transport device on the outside of the rear wall 2 of the soundproof housing 1.
  • the rollers 8, 9, 10 are mounted in the two bearing plates 19, which are each fastened to the rear wall 2 of the soundproof housing 1 with two screws 30.
  • Fig. 5 shows a part of the paper transport device on the outside of the soundproof housing 1, wherein the paper pressure roller 9 is pulled out of the bearing plate 19 a little to make it easier to see.
  • the bearing of the paper pressure roller 9 is held in its operating position by the (not recognizable) coil spring 17.
  • the continuous paper is passed between the paper feed roller 8 and the paper pressure roller 9, then around the pressure roller 7 of the printing device 6 and finally between the paper pressure roller 9 and the paper extraction roller 10.
  • the paper pressure roller 9 can be raised in its position between the paper feed roller 8 and the paper extraction roller 10 or removed completely from this position and then inserted again.
  • the printing roller 7 rotates in the direction of the arrow 31 in FIG. 1 and pulls the continuous paper into the printing device 6 in accordance with the dashed line 25.
  • the paper pressure roller 9 is pressed sufficiently firmly against the paper feed roller 8 by means of the coil springs 17. This largely prevents slippage between the continuous paper and these two rollers 8, 9.
  • the drawing of the paper into the printing device 6 therefore causes the paper feed roller 8 and the paper pressure roller 9 to rotate.
  • the force-locking connection between the paper feed roller 8 and the paper extraction roller 10 inevitably sets the latter in rotation.
  • This rotation is also transmitted to the paper pressure roller 9, which is also pressed onto the paper extraction roller 10 by means of the coil springs 17.
  • the continuous paper shown by the dashed line 27 and discharged from the printing device 6 is gripped in the nip between the paper pressure roller 9 and the paper extraction roller 10 and pulled away from the printing device 6. In this way, no paper jam can form in the area A of the continuous paper between the printing roller 7 and the paper extraction roller 10.
  • the tension on the continuous paper in the area A is constant, since the force transmission means between the paper feed roller 8 and the paper feed roller 10 are dimensioned such that the paper feed roller 10 rotates at a higher peripheral speed than the paper feed roller 8.
  • the drive for the paper transport device thus occurs in such a way that the continuous paper drawn in by the pressure roller 7 of the printing device 6 takes the paper feed roller 8 and the paper pressure roller 9 largely without slippage.
  • a separate motor for the paper transport device is therefore unnecessary.
  • the rollers 8, 9, 10 are arranged such that a direction of movement of the continuous paper inevitably between the paper feed roller 8 and the paper pressure roller 9 in the direction of the printing device 6 and between the paper pressure roller 9 and the paper extraction roller 10 a direction of movement of the paper away from the printing device 6 results.
  • the paper transport speed can be adjusted so that the continuous paper is pulled away from the printing device 6 at a higher speed than it is from this itself is drawn in. This ensures safe paper transport without jamming and jamming the continuous paper.

Landscapes

  • Handling Of Continuous Sheets Of Paper (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
EP87102805A 1986-02-28 1987-02-27 Papiertransportvorrichtung für Druckeinrichtungen Expired - Lifetime EP0234589B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863606670 DE3606670A1 (de) 1986-02-28 1986-02-28 Papiertransportvorrichtung fuer druckeinrichtungen
DE3606670 1986-02-28

Publications (3)

Publication Number Publication Date
EP0234589A2 EP0234589A2 (de) 1987-09-02
EP0234589A3 EP0234589A3 (en) 1989-03-01
EP0234589B1 true EP0234589B1 (de) 1992-06-10

Family

ID=6295243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102805A Expired - Lifetime EP0234589B1 (de) 1986-02-28 1987-02-27 Papiertransportvorrichtung für Druckeinrichtungen

Country Status (3)

Country Link
US (1) US4836701A (enExample)
EP (1) EP0234589B1 (enExample)
DE (1) DE3606670A1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO874100L (no) * 1987-09-30 1989-03-31 Jacobsen Loyd Anordning for automatisk utmating av papir gjennom et skriverdeksel.
DE3919830C2 (de) * 1988-06-22 2003-10-23 Monarch Marking Systems Inc Handetikettierer und Verfahren zum Etikettieren
DE19749603C2 (de) * 1997-11-10 1999-11-25 Oce Printing Systems Gmbh Vorrichtung zum traktorlosen Transport eines bandförmigen Aufzeichnungsträgers in einem elektrografischen Druck- oder Kopiergerät
DE102008025994B4 (de) * 2008-05-29 2011-06-09 Windmöller & Hölscher Kg Druckmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1095063A (en) * 1912-05-13 1914-04-28 Vicente Font Y Amador Type-writer.
DE469383C (de) * 1926-02-27 1928-12-14 Otto Post Wickel- und Spannvorrichtung fuer Papierbahnen an Schreib- und Rechenmaschinen
FR907783A (fr) * 1944-05-09 1946-03-21 Roule-bobine
JPS46282Y1 (enExample) * 1967-06-12 1971-01-07
IT1014154B (it) * 1974-05-10 1977-04-20 Olivetti & Co Spa Dispositivo per lo spostamento di una testina di stampa mediante un motore elettrico a corrente conti nua
US4197024A (en) * 1977-11-30 1980-04-08 Teletype Corporation Acoustical damping for printer
DE2818316C3 (de) * 1978-04-26 1983-05-11 Zeno 8254 Isen Mittermaier Vorrichtung zum Aufwickeln von Aufzeichnungsbändern von Rechenmaschinen o.dgl.
JPS57141786A (en) * 1981-02-27 1982-09-02 Nippon Abionikusu Kk Card feeding mechanism for card information reader
JPS6038189A (ja) * 1983-08-11 1985-02-27 Hitachi Ltd プリンタの騒音防止構造

Also Published As

Publication number Publication date
EP0234589A2 (de) 1987-09-02
DE3606670A1 (de) 1987-09-17
US4836701A (en) 1989-06-06
EP0234589A3 (en) 1989-03-01
DE3606670C2 (enExample) 1987-12-17

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