EP1645427A1 - Système de tension pour imprimantes - Google Patents

Système de tension pour imprimantes Download PDF

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Publication number
EP1645427A1
EP1645427A1 EP04447223A EP04447223A EP1645427A1 EP 1645427 A1 EP1645427 A1 EP 1645427A1 EP 04447223 A EP04447223 A EP 04447223A EP 04447223 A EP04447223 A EP 04447223A EP 1645427 A1 EP1645427 A1 EP 1645427A1
Authority
EP
European Patent Office
Prior art keywords
tensioning system
media
roll
tensioning
rolls
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Withdrawn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
EP04447223A
Other languages
German (de)
English (en)
Inventor
Rik Fonteyne
Nele Dely
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.)
Mutoh Europe NV
Original Assignee
Mutoh Europe NV
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 Mutoh Europe NV filed Critical Mutoh Europe NV
Priority to EP04447223A priority Critical patent/EP1645427A1/fr
Priority to DE200560003977 priority patent/DE602005003977T2/de
Priority to AT05447053T priority patent/ATE381993T1/de
Priority to EP05447053A priority patent/EP1574348B1/fr
Publication of EP1645427A1 publication Critical patent/EP1645427A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/16—Registering, tensioning, smoothing or guiding webs longitudinally by weighted or spring-pressed movable bars or rollers
    • 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
    • B41J15/16—Means for tensioning or winding the web
    • B41J15/165—Means for tensioning or winding the web for tensioning continuous copy material by use of redirecting rollers or redirecting nonrevolving guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/12—Single-function printing machines, typically table-top machines

Definitions

  • the invention is related to a system for tensioning printing media (paper, textile,%) on a printer, in particular on a large inkjet printer.
  • Irregular expansion of the media may occur due to:
  • the media loop between the printer and the media collecting system is put under a certain tension, caused by the pulling force of the media collecting system (take-up system).
  • the loop length is the length of the media between the printing position and the media collecting system, measured in the moving direction of the media.
  • Such a loop length difference causes the tension force applied by the media collecting system to be concentrated in the place of the media where the loop length is shorter. This creates tension loss in the areas of the media where the loop length is longer.
  • the loop length difference may further cause bubbles in the media at the printing area, resulting in:
  • the present invention aims to provide a tensioning system able to compensate irregular expansion or tension of media such that the media is kept flat at the printing position.
  • the tensioning system according to the invention is particularly suitable for printing on extremely thin media, such as are presently used for example in the Digital Transfer Printing technique.
  • Fig. 1 represents two views of a printing device comprising a tensioning system according to the present invention.
  • Fig. 2 represents a detailed view of the tensioning system.
  • Fig. 3 represents an embodiment with three rolls.
  • Figure 1 shows two views of a printing device comprising a tensioning system according to a first embodiment of the present invention.
  • Figure 2 shows more in detail said first embodiment of the tensioning system according to the invention.
  • the tensioning system as in the first embodiment comprises a number of tension rollers, which are mounted next to each other. Each tension roller is independently spring loaded on both ends.
  • Each tension roller except for the one in the middle, can be adjusted in the left-right direction. This adjustment can be used to fit the system to the width of the media used.
  • Both the left and the right outside tension roller may have a higher spring load on the outsides. This is because the effect of irregular media expansion shows up mainly on the outside edges of the media.
  • the total system can be withdrawn backward for media loading. It can be adjusted in the front/rear direction to adjust the offset spring force on the tension rollers.
  • the tension rollers can be fixed around their length axis, allowing the media to slide over, or can be mounted on bearings, allowing them to roll with the media movement.
  • the tension rollers of the system of the invention each give additional, independent local tension on the media area covered by the width of the tension roller. This compensates for the differences in the loop length over the width of the media. By doing so, all irregular media expansion is absorbed at the invention system, thereby keeping the media in the print area flat.
  • tension roll made of a sufficiently flexible material, that causes the roll to bend slightly due to the pressure exerted by the media onto the roll.
  • the tension roll may obtain the same shape as in the above-mentioned embodiments, thus yielding the same effect.
  • the system is especially advantageous for printers used to print on extremely thin media, such as printers used for Digital Transfer Printing.

Landscapes

  • Handling Of Continuous Sheets Of Paper (AREA)
EP04447223A 2004-03-10 2004-10-08 Système de tension pour imprimantes Withdrawn EP1645427A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04447223A EP1645427A1 (fr) 2004-10-08 2004-10-08 Système de tension pour imprimantes
DE200560003977 DE602005003977T2 (de) 2004-03-10 2005-03-10 Spannvorrichtung für Druckvorrichtungen
AT05447053T ATE381993T1 (de) 2004-03-10 2005-03-10 Spannvorrichtung für drucker
EP05447053A EP1574348B1 (fr) 2004-03-10 2005-03-10 Système de tension pour imprimantes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04447223A EP1645427A1 (fr) 2004-10-08 2004-10-08 Système de tension pour imprimantes

Publications (1)

Publication Number Publication Date
EP1645427A1 true EP1645427A1 (fr) 2006-04-12

Family

ID=34933096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04447223A Withdrawn EP1645427A1 (fr) 2004-03-10 2004-10-08 Système de tension pour imprimantes

Country Status (1)

Country Link
EP (1) EP1645427A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181678A (ja) * 1982-04-19 1983-10-24 Ricoh Co Ltd 記録装置
JPS59190152A (ja) * 1983-04-08 1984-10-27 Fuji Xerox Co Ltd ロ−ル紙給紙装置
JPS60132859A (ja) * 1983-12-19 1985-07-15 Fuji Xerox Co Ltd 搬送案内ロ−ラ
US5649890A (en) * 1994-05-11 1997-07-22 De La Rue Giori, S.A. Draw roller for the transport of a material web, particularly a paper web in a web-fed printing machine
EP0826480A2 (fr) * 1996-08-26 1998-03-04 Nippon Petrochemicals Company, Limited Appareil pour élargir une bande
DE10135124A1 (de) * 2001-07-19 2003-02-06 Lueraflex Gmbh G Lueckenotto Walze zur Führung von bahnenförmigem Material
EP1457347A1 (fr) * 2003-03-12 2004-09-15 Hewlett-Packard Development Company, L.P. Système pour conditionner et transporter du textile sans support

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181678A (ja) * 1982-04-19 1983-10-24 Ricoh Co Ltd 記録装置
JPS59190152A (ja) * 1983-04-08 1984-10-27 Fuji Xerox Co Ltd ロ−ル紙給紙装置
JPS60132859A (ja) * 1983-12-19 1985-07-15 Fuji Xerox Co Ltd 搬送案内ロ−ラ
US5649890A (en) * 1994-05-11 1997-07-22 De La Rue Giori, S.A. Draw roller for the transport of a material web, particularly a paper web in a web-fed printing machine
EP0826480A2 (fr) * 1996-08-26 1998-03-04 Nippon Petrochemicals Company, Limited Appareil pour élargir une bande
DE10135124A1 (de) * 2001-07-19 2003-02-06 Lueraflex Gmbh G Lueckenotto Walze zur Führung von bahnenförmigem Material
EP1457347A1 (fr) * 2003-03-12 2004-09-15 Hewlett-Packard Development Company, L.P. Système pour conditionner et transporter du textile sans support

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 022 (M - 272) 31 January 1984 (1984-01-31) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 055 (M - 362) 9 March 1985 (1985-03-09) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 294 (M - 431) 20 November 1985 (1985-11-20) *

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