WO1991005666A1 - Dispositif pour le sechage de supports d'enregistrements dans des imprimantes a jet d'encre - Google Patents

Dispositif pour le sechage de supports d'enregistrements dans des imprimantes a jet d'encre Download PDF

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Publication number
WO1991005666A1
WO1991005666A1 PCT/EP1990/001650 EP9001650W WO9105666A1 WO 1991005666 A1 WO1991005666 A1 WO 1991005666A1 EP 9001650 W EP9001650 W EP 9001650W WO 9105666 A1 WO9105666 A1 WO 9105666A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
heat
shaft
recording medium
ink
Prior art date
Application number
PCT/EP1990/001650
Other languages
German (de)
English (en)
Inventor
Georg BÖHMER
Walter BÜNNER
Klaus JÄGER
Karl-Heinz KÖSLICH
Hans Kusmierz
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to DE59005387T priority Critical patent/DE59005387D1/de
Priority to EP90914525A priority patent/EP0495806B1/fr
Publication of WO1991005666A1 publication Critical patent/WO1991005666A1/fr

Links

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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0024—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using conduction means, e.g. by using a heated platen
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials

Definitions

  • the invention relates to a device for drying a recording medium described by means of an ink print head using an electric heater and an ink printing device with such a device.
  • Ink printing devices which work with non-penetrating ink, i.e. With an ink that does not penetrate the recording media, the paper used on the usual office equipment has a significantly better typeface than ink printing devices that are designed for penetrating ink. Non-penetrating ink dries more slowly on paper than penetrating ink, so that there is a risk of blurring of the writing or the graphics created when guiding, storing and removing the paper sheets.
  • the object of the invention is to provide a device for drying a recording medium of the type mentioned at the outset, which is designed using an ink print head, is designed with little effort, has a relatively low power consumption and prevents deformation of the recording medium during the drying process.
  • the paper printed with the aid of an ink print head is passed through a heat shaft with opposing heating surfaces which are black due to better radiation.
  • the mutual illumination in the heat shaft achieves a homogeneous temperature distribution in the heat shaft with a low power requirement.
  • the recording medium heats up due to heat radiation and heat transfer, whereby the dark ink on the printed side absorbs the heat quickly and thereby dries quickly.
  • the rising air flow in the heat shaft which acts as a chimney, promotes drying and the moisture is removed.
  • the drying temperature is quickly reached after switching on the printing device. Farther the heating capacity can be regulated simply and safely due to the relatively low heat capacity of the heating plates.
  • the heating foil can be designed in such a way that it is designed as a continuous heating foil for both heating surfaces and as a result the effort is considerably reduced.
  • the device is designed as an assembly that can be exchangeably inserted in holders of the ink printing device, simple installation and removal in the ink printing device is possible.
  • the heat-insulating cover of the drying device in connection with the use of a heat shaft enables a compact construction which does not disturb the other pressure build-up.
  • the heat generated is used effectively for drying without significant losses. Harmful heating of the printing device can thereby be prevented.
  • the heat shaft can also serve as an additional paper guide and is suitable for a wide variety of paper widths.
  • Embodiments of the invention are shown in the drawings and are described in more detail below, for example. Show it
  • FIG. 1 shows a schematic sectional illustration of an ink printing device with built-in ink drying device
  • FIG. 2 shows a schematic sectional illustration of the ink printing device
  • FIG. 3 shows a schematic sectional illustration of the structure of the heating surfaces
  • FIG. 4 shows a schematic sectional illustration of the ink printing device according to FIG. 2 along the section line IV-IV,
  • FIG. 5 shows a schematic sectional illustration of the ink printing device according to FIG. 2 along the section line V-V and
  • Figure 6 is a schematic representation of the structure of the ink printing device from above.
  • An ink printing device shown schematically in FIG. 1 is designed for operation with single sheets as well as with continuous paper. It essentially contains an ink printhead 10 which works according to the electrothermal principle and which is moved back and forth in printing operation by means of an electromotive drive device 11 via guide rods 12 which are permanently assigned to the printer by a recording medium 13 guided by the printing device.
  • an electromotive-driven platen roller 14 with an associated paper guide trough 15 and corresponding paper pressure rollers 16 is provided to guide folded paper (continuous paper).
  • a pin wheel 17 is arranged upstream in the paper transport direction of the paper guide trough 15 and engages with corresponding perforations 18 in the edge perforation of the continuous paper.
  • a single sheet feed shaft 19 is arranged, which is designed as a recess in the housing and which serves to feed the single sheets manually to the paper guide trough 15 in single sheet operation.
  • the record carrier is guided in the writing drive, be it a single sheet 13/1 or continuous paper 13/2 through the paper guide trough 15 in the area of the ink print head 10 via a resilient pressure bar 20 and held there describes the ink print head 10 as a function of write data to be entered.
  • an ink drying device 21 In the paper transport direction, directly downstream of the ink print head 10 and thus the printing point, there is an ink drying device 21 with an electrically heatable heat shaft 22 arranged therein, which extends over the entire width of the recording medium 13 and through which the recording medium dries the ink is carried out.
  • the folding paper 13/2 After passing through the ink drying device, in operation with continuous paper (folding paper), the folding paper 13/2 is guided backwards via corresponding guides of the housing 23 of the ink printing device.
  • a conventional Paper storage container 24 In the case of operation with individual sheets 13/1 Einzel ⁇ the leaves can be removed either manually upward or e ⁇ > is, as illustrated here only schematically, a conventional Paper storage container 24 provided for receiving the single sheets.
  • a paper guide strip 26 is also arranged above the printing area 25, which supports and guides the recording medium 13 on the side facing away from the printing side.
  • the ink drying device is constructed in accordance with the representations of FIGS. 2 to 6. It will now be described in more detail below.
  • the ink drying device contains the heat shaft 22 which extends over the entire width of the recording medium 13 and has two opposing heating surfaces 27 which are colored black because of better radiation of the heat supplied. It is also possible to e.g. to give a rough structure or to take other measures that require heat transfer.
  • the recording medium 13 heats up due to heat radiation and heat transfer, the dark ink absorbing the heat quickly on the printed side and thus drying quickly.
  • the heat shaft 22 has the structure of a chimney, so that air flows through the heat shaft 22 by convection during heating operation and this rising air flow promotes drying by removing the evaporating moisture.
  • the heating surfaces 27 consist of U-shaped heating plates 28 made of thin steel sheet which are identical on both sides and which are good heat conductors with a continuous heating foil 29 bonded behind them in order to achieve good heat transfer.
  • the structure of the heating surfaces 27 is shown schematically in section in FIG. 3. They essentially consist of the thin heating plates 28 and the self-adhesive heating foil 29 made of a carrier foil 30 with an adhesive layer 31 arranged thereon, a heating resistance layer 32 with meandering conductor tracks and an insulating cover foil 33 made of plastic.
  • the individual layers of the heating surfaces in the exemplary embodiment are dimensioned as follows:
  • the bracket 36 consists of two side cheeks 37 ( Figure 4), which have a radius 38 ( Figure 5) for U steering the heating film 29.
  • the heating foil 29 is glued into the U-profiles of the heating plates 28, it is received between the side cheeks 37 of the holder 36 and deflected over the radius 38. As can be seen from FIGS. 4 and 5, it is designed as a continuous heating film for both heating surfaces, the deflection taking place via a lateral holder 36 with its radius 38.
  • the heating resistor in the area of the deflection 38 of the heating foil 29 is smaller than in the actual heating area on the heating surfaces in order not to generate unnecessary heat loss.
  • the heating plates 28 with the brackets 36 and the heating foil 29 form a separate structural unit 39 as shown in FIG. 6.
  • the heating foil 29 is contacted in the exemplary embodiment shown in FIG. 4 via connecting lines 40 with the aid of crimp contacts 41 which are clipped on pads 42 (contact paths) of conductor tracks 43 of the heating resistor of the heating foil 29.
  • a temperature sensor 44 is also provided on one side of the heating surfaces and is also connected to the connecting lines 40.
  • cover shells 45 are provided made of heat-resistant plastic (FIG. 2). They have guide grooves 46 at the ends (FIG. 4) which, when the cover shells are put together in accordance with FIG. 6 (arrows shown), ensure that they are brought together in the correct position.
  • the cover shells are connected by means of snap noses 47 formed on projections which, when plugged together, engage in corresponding openings 48 of projections of the cover shells 45 and latch there (FIG. 6).
  • cover shells 45 have openings 49 on the inside (FIG. 5) which interact with additional hooks 50 of the heating plates 28 (FIG. 5) which form a spacing and lock there.
  • a defined air gap 52 (FIG. 5) is generated between cover shells 45 and heating plates 28 in the assembled state. Because of the insulating air gap 52 and the small contact surfaces between the heating plates 28 and the cover shells 45, the drying temperature can be significantly higher without additional protective measures being provided.
  • Paper deflection ribs 53 formed on the upper and lower side walls of the cover shells 45 also prevent the paper flow from being disturbed at the insulating air gap 52.
  • Two longitudinal ribs 54 are additionally formed in the interior of the cover shell 45 (FIGS. 2 and 4). They throttle the pulling heat loss and stiffen the cover shells 45.
  • Additional transverse ribs 55 (FIG. 2, FIG. 5) on the inner surface of the cover shells serve to hold down the connecting line 40 to relieve strain.
  • a T-profile 57 stiffening the covering shells is formed on webs 56 over the entire width of the covering shells. According to the illustration in FIG.
  • this interacts with a corresponding groove 58 of an extruded profile 59 made of sheet metal of the housing structure of the printing device. That is, to fix the entire ink drying device, the ink drying device is inserted into the groove 58 of the extruded profile 59 via the T-profiles 57.
  • the support 60 on the extruded profile 59 takes place via pointed ribs 61 formed on the cover shells (FIGS. 2, 6).
  • the T-profile 57 of the cover shells 45 has ends
  • Snap tabs 62 (Figure 5). These lock when the T-profile 47 is inserted into the extruded profile 59 behind shoulders 63 of the extruded profile 39 (FIG. 5) and secure the drying device against axial displacement.
  • the heat transfer from the drying device to the extruded profile 59 is low due to a formed air gap 64 (FIG. 2) and the point support 60.
  • the accumulated heat can escape from the lower shell area through openings 65 (FIG. 2).
  • the entire drying device is constructed symmetrically so that it can be locked in the extruded profile 59 without regard to the installation position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ink Jet (AREA)

Abstract

Dispositif pour le séchage d'un support d'enregistrement (13) sur lequel écrit une tête d'impression à jet d'encre (10), avec utilisation d'un chauffage électrique, le dispositif s'étendant au moins sur toute la largeur du support d'enregistrement (13). Le dispositif présente un puits thermique chauffable (22) servant à accueillir le support d'enregistrement (13), le puits étant configuré de façon que s'y établisse lors de son échauffement une répartition homogène de la température. Le dispositif est composé de divers modules de telle sorte qu'il peut être placé dans une fixation (57) de l'imprimante sans qu'il soit nécessaire de tenir compte de sa position de montage.
PCT/EP1990/001650 1989-10-10 1990-10-01 Dispositif pour le sechage de supports d'enregistrements dans des imprimantes a jet d'encre WO1991005666A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59005387T DE59005387D1 (de) 1989-10-10 1990-10-01 Vorrichtung zum trocknen von aufzeichnungsträgern in tintendruckeinrichtungen.
EP90914525A EP0495806B1 (fr) 1989-10-10 1990-10-01 Dispositif pour le sechage de supports d'enregistrements dans des imprimantes a jet d'encre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP89118830 1989-10-10
EP89118830.2 1989-10-10

Publications (1)

Publication Number Publication Date
WO1991005666A1 true WO1991005666A1 (fr) 1991-05-02

Family

ID=8202007

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/001650 WO1991005666A1 (fr) 1989-10-10 1990-10-01 Dispositif pour le sechage de supports d'enregistrements dans des imprimantes a jet d'encre

Country Status (4)

Country Link
EP (1) EP0495806B1 (fr)
JP (1) JPH05500643A (fr)
DE (1) DE59005387D1 (fr)
WO (1) WO1991005666A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030824A1 (de) * 1990-09-28 1991-05-29 Siemens Ag Vorrichtung zum trocknen von bedruckten aufzeichnungstraegern in tintendruckeinrichtungen
EP0997301A3 (fr) * 1998-10-30 2000-07-12 Xerox Corporation Feuille infrarouge chauffante pour sécher des images jet d'encre sur un support d'enregistrement
US6374889B1 (en) 1997-05-05 2002-04-23 Exxonmobil Chemical Patents Inc. Tire sidewall compositions

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574085A (en) * 1947-11-01 1951-11-06 John T Bian Extraction drier
FR1313751A (fr) * 1961-06-29 1963-01-04 Kalle Ag Appareil et procédé pour le développement d'une image latente électrostatique
FR2170585A5 (fr) * 1971-12-27 1973-09-14 Savin Business Machines Corp
FR2286086A1 (fr) * 1974-09-24 1976-04-23 Gretag Ag Transporteur de matiere en feuilles
FR2399633A1 (fr) * 1977-08-04 1979-03-02 Brueckner Apparatebau Gmbh Dispositif de sechage d'une bande de materiau en deplacement continu
FR2598495A1 (fr) * 1986-05-09 1987-11-13 Monforts Gmbh & Co A Secheur a rayonnement infrarouge pouvant etre chauffe au gaz ou a l'electricite
EP0284215A1 (fr) * 1987-03-25 1988-09-28 Hewlett-Packard Company Procédé et appareil pour le séchage uniforme d'encre sur un papier sortant d'une imprimante à jet d'encre
US4854052A (en) * 1986-03-14 1989-08-08 Valmet Oy Floater radiation dryer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574085A (en) * 1947-11-01 1951-11-06 John T Bian Extraction drier
FR1313751A (fr) * 1961-06-29 1963-01-04 Kalle Ag Appareil et procédé pour le développement d'une image latente électrostatique
FR2170585A5 (fr) * 1971-12-27 1973-09-14 Savin Business Machines Corp
FR2286086A1 (fr) * 1974-09-24 1976-04-23 Gretag Ag Transporteur de matiere en feuilles
FR2399633A1 (fr) * 1977-08-04 1979-03-02 Brueckner Apparatebau Gmbh Dispositif de sechage d'une bande de materiau en deplacement continu
US4854052A (en) * 1986-03-14 1989-08-08 Valmet Oy Floater radiation dryer
FR2598495A1 (fr) * 1986-05-09 1987-11-13 Monforts Gmbh & Co A Secheur a rayonnement infrarouge pouvant etre chauffe au gaz ou a l'electricite
EP0284215A1 (fr) * 1987-03-25 1988-09-28 Hewlett-Packard Company Procédé et appareil pour le séchage uniforme d'encre sur un papier sortant d'une imprimante à jet d'encre

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030824A1 (de) * 1990-09-28 1991-05-29 Siemens Ag Vorrichtung zum trocknen von bedruckten aufzeichnungstraegern in tintendruckeinrichtungen
US6374889B1 (en) 1997-05-05 2002-04-23 Exxonmobil Chemical Patents Inc. Tire sidewall compositions
US6837288B2 (en) 1997-05-05 2005-01-04 Exxonmobil Chemical Patents Inc. Composition for tire sidewalls and other rubber constructions
EP0997301A3 (fr) * 1998-10-30 2000-07-12 Xerox Corporation Feuille infrarouge chauffante pour sécher des images jet d'encre sur un support d'enregistrement

Also Published As

Publication number Publication date
DE59005387D1 (de) 1994-05-19
JPH05500643A (ja) 1993-02-12
EP0495806A1 (fr) 1992-07-29
EP0495806B1 (fr) 1994-04-13

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