JPH05500643A - Drying device for recording media in ink printing equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] A device for drying a recording medium in an ink printing device. Equipped with a drying device that uses electrical heating for printed recording media and this type of device. The present invention relates to an ink printing device.

Inks that work with non-penetrating inks, that is, inks that do not soak into the recording medium. Printing equipment is designed for penetrating ink on paper typically used in offices. Displays clearly better character shapes than ink printing devices. However, non-penetrating in Ink dries more slowly on paper than penetrating ink, resulting in blurred text or drawn shapes. danger exists during the guidance, ejection and removal of sheets of paper.

In order to accelerate the printing process, e.g. From Publication No. 04, it is known to pull the paper over a heated saddle after printing. The removed paper is then heated from the back to dry the ink. At that time, individual printed The paper is stretched by an auxiliary feeding device above a heating device consisting of a heated plate. .

However, this type of feeding and tensioning device relies on the sheet paper and film supply section. Compounding in modern ink printing devices that work not only with paper but also with folded paper or continuous paper prevents paper processing. A tensioning device and a heated saddle combine to increase the temperature. When a side warp appears on the recording medium, this warp is removed using a corresponding stretching roller, etc. I have to adjust it again.

Furthermore, heating from one side requires a large consumption of electrical energy; requires corresponding design of large input and power supply components. Paper is present in the printer If not, the heat will be dissipated to the surroundings or the heated saddle will overheat and the printing operation will be interrupted. Expensive control equipment is required to avoid the risk of overheating of the recording medium in case of disconnection. Ru.

The object of the invention is to provide an economically constructed and comparatively low input recording method during the drying process. A recording medium printed by an ink print head that prevents deformation of the recording medium. The object of the present invention is to provide an apparatus for drying a body of the above type.

This problem is solved in a device of the aforementioned type by the features claimed in claim 1. It will be done.

Advantageous embodiments of the invention are described in the dependent claims.

In this invention, the paper printed by the ink print head is A heating chamber, which is black in color and has opposing heating surfaces, is guided through the hole. heating chamber Due to the radiation from both sides in the hole, the heating chamber has low power consumption and uniformity in the hole. A temperature distribution can be obtained. The recording medium is heated by thermal radiation and heat transfer, and the marking On the written surface, the dark ink absorbs heat quickly and dries quickly.

The airflow rising in the heating chamber, which acts as a chimney, accelerates drying and carries away warm air.

Heating from both sides combined with a heat-generating film placed on the heating plate, The drying temperature is quickly reached after the printing device is switched on. Furthermore, the relatively small size of the heating plate The small heat capacity allows heating power to be easily and reliably adjusted.

According to an advantageous embodiment of the invention, the heating film is continuous to both heating surfaces. Constructed as a heat-generating film, thereby significantly reducing costs can.

A module that allows the device to be replaceably integrated into the holding part of an ink printing device Easy installation and removal from ink printing equipment is possible.

Furthermore, the components that assemble the module include the entire module that holds the ink printing device. The hole in the heating chamber is designed so that it can be installed without paying attention to the installation position in the heating chamber. It can be configured symmetrically. Easy and economical due to the symmetrical shape of the components Manufacturing is also possible.

The dryer's thermally insulating cover allows the heating chamber to be used in conjunction with the use of holes for other markings. A compact structure that does not interfere with the character structure is possible.

``The heat generated is effectively utilized for drying without significant losses. thereby marking This prevents harmful heating of the device.

Furthermore, the holes in the heating chamber act as an auxiliary paper guide and are suitable for various paper widths. .

Embodiments of the invention are shown in the drawings and will be explained in detail below.

FIG. 1 shows a sectional view of an ink printing device incorporating an ink drying device.

FIG. 2 shows a cross-sectional view of the ink drying device.

FIG. 3 shows a partial sectional view of the structure of the heating surface.

FIG. 4 shows a cross-sectional view of the ink drying device shown in FIG. 2 along cutting line IV-IV. .

FIG. 5 shows a cross-sectional view of the ink drying device taken along the cutting line ■--■ shown in FIG. 2.

FIG. 6 shows a plan view of the structure of the ink drying device.

The ink printing device shown in FIG. It is also designed for continuous paper operation. The ink printing device uses electric heating principle with main stitching. The ink print head 10 is operated based on an electrically driven drive unit. 11, the printing device moves the guide rod 12 fixedly attached to the printing device. It is reciprocated along the guided recording medium 13 during printing operation. Print medium 13 A paper guide frame 15 and a corresponding paper holding roller 16 are attached to guide the paper. A platen 14 is provided which is driven by the motor. For supply of folding paper (continuous paper) For this purpose, a mold wheel 17 is arranged in front of the paper guide frame 15 in the paper conveying device, and this mold wheel has a corresponding It engages with the wire hole of the continuous paper via the claw 18 of. Furthermore, the system is designed for operation with sheet paper. A sheet paper supply vertical hole 19 is arranged, and this supply chamber hole is configured as a cavity in the case. It is used to manually feed sheet paper to the paper guide frame 15 during sheet paper operation. It will be done. The recording medium is used not only when operating with sheet paper but also when operating with continuous paper. During the printing operation of the printer, whether the paper is sheet paper 13/1 or continuous paper 13/2, A pressure force guided through the inner frame 15 into the area of the ink print head 10 and having spring elasticity The recording data to be written by the ink print head 10 is Printed in relation to the data. A heating chamber that can be electrically heated is provided with holes 22 inside. The ink drying device 21, which has been The heating chamber hole extends over the entire width of the printing medium 13 and is arranged directly behind the heating chamber. The recording medium is guided through the holes in the heat chamber for drying of the ink. ink drying device When operating with continuous paper (folded paper) after passing, folded paper 13/2 is ink-filled. It is carried away towards the rear via a corresponding guide in the case 23 of the printing device.

In the case of operation using sheet paper 13/1, the sheet paper should be picked up manually. Either remove the paper or set up a conventional paper storage container 24 to contain the sheets of paper as schematically shown in the figure. can be used. The recording medium passes through the hole 22 in the heating chamber of the ink drying device 21. Further, above the print area 25, the recording medium 1 A paper guide section 26 is arranged to support and guide the paper 3 on the opposite side to the printing surface.

The ink drying device is constructed as shown in FIGS. 2 to 6. then ink The drying device will be explained in detail.

As shown in FIG. 2, the ink drying device extends across the entire width of the recording medium 13 and A heating chamber with a hole 22 is provided with two matching heating surfaces 27, these heating surfaces being It is colored black for good radiation of heat. For example, if you place a rough pattern on these surfaces, It is also possible to provide other means for imparting protection or promoting heat transfer.

Due to the irradiation from both sides of the heating surface 27 during heating operation, there is little light in the heating chamber and in the hole 22. Even power consumption and uniform temperature distribution can be obtained. The recording medium 13 uses heat radiation and heat transfer. This causes the temperature to rise, and the dark ink on the printed surface rapidly absorbs the heat. Therefore, it dries quickly. At this time, since the heating chamber hole 22 has a chimney structure, During thermal operation, air flows through the heating chamber through the holes 22 by convection, and this rising air flow accelerates drying by drawing out moisture that evaporates.

The heating surface 27 is formed into a U-shape from a thin steel plate with good heat conductivity to achieve good heat transfer. Identical heating on both sides with a continuous heating film 29 glued to the back to It consists of a plate 28.

The structure of the heating surface 27 is shown in cross-section in FIG. The heating surface is mainly a thin A heating resistor comprising a hot plate 28, an adhesive layer 31 thereon, and a conductor path formed in a meandering shape. Self-adhesive heating film consisting of a layer 32 and a plastic insulating cover layer 33 It consists of 29 pieces. The individual layers of the heating surface were selected in the example with the following dimensions: It is.

Thickness material Heating plate 0.6mm aluminum Heat generating film ~0.25mm Polyester, Kapton (plastic) support Film ~Q, 2mm polyester, Kapton (plastic) adhesive layer ~ 0 mouth 1 connection Heat resistant contact adhesive heating resistance 0.01~O mouth 3mm In-cone 72% Ni, 15% Cr, 13% Fe cover film 0.01~ 0.03 Polyester, Kabuton (heat-resistant plastic) The heating plate 28, which is identical on both sides as a U-shaped cross-section, is constructed symmetrically. heating plate has a cavity 34 on its side, in which a holder 3 is inserted for fixing the heating plate 28. The stopper projection 35 engages with the hook 6. At that time, the holder 36 holds the heat generating film 29 in place. Two side edges 37 (see FIG. 4) with turning radii 38 (see FIG. 5) ). The heat generating film 29 is inserted and glued into the U-shaped cross section of the heating plate 28 to generate heat. The thermal film is contained between the side edges 37 of the retainer 36 and is redirected on a radius 38 . The heating film has continuous heating for both heating surfaces as shown in Figures 4 and 5. Embodied as a film, the deflection includes a lateral holder 36 with a radius 38. It is done through. The heat generating resistor in the area of the direction changing part 38 of the heat generating film 29 is unnecessary. In order to avoid unnecessary heat losses, the heating surface has a smaller thermal insulation area in the original heating area. The heating plate 28 equipped with the holder 36 and the heat generating film 29 is separately assembled as shown in FIG. A constituent unit 39 is formed.

In the embodiment shown in Section 4, the heat generating film 29 is connected to the crimp terminal via the connecting conductor 40. 41, the crimp terminal contacts the conductor path 43 of the heating resistor of the heating film 29. is caulked (contacted) onto the pad 42 (contact path) of. Furthermore, temperature detection For this purpose, a temperature sensor 44 is provided on one side of the heating surface, which temperature sensor is also connected to the It is connected to a connecting conductor 40.

Symmetrical made of heat-resistant plastic for thermal insulation of heating surfaces and as contact protection is provided with an identical cover acid 45 (see FIG. 2). Cover acid is guided to the edge (see Figure 4), this guide groove has a groove 46 when the cover acid is inserted. , as shown in section 6 (see arrows in the figure) provides positionally accurate integration. that time The binding of the cover acid is done through the hooks 47 formed on the attachment part, and these The locking pawl engages with the corresponding hole 48 of the additional part of the cover acid 45 during insertion. Then the hook is stopped there (see Figure 6).

Furthermore, the cover acid 45 has holes 49 on its inner surface (see FIG. 5), and these holes are connected to the heating plate 2. It cooperates with the auxiliary hook 50 (5th Ward Kensho) that forms the spacer piece of 8 and is not hung there. be taught. As a result, in the assembled state, a predetermined gap 52 (see Fig. 5) is covered. It is created between the acid 45 and the heating plate 28. Insulating gap 52 and heating plate 28 and cover acid Due to the small contact surface between the The drying temperature can be clearly increased.

The paper shielding ribs 53 formed on the upper and lower side surfaces of the cover acid 45 further provide insulation gaps. This prevents paper intrusion failures at 52. There are two auxiliary long squares inside the cover acid 45. A facing rib 54 is formed (see section 2 and FIG. 4). These long horizontal ribs suppresses the transfer of lost heat and reinforces the potash cover shell 45. Cover acid inner surface auxiliary horizontal ribs 55 (see Figures 2 and 5) li, to reduce the tensile load. It is used to hold down the connecting conductor 40.

On the outer surface of the cover acid, there are bars 56 over the entire width of the cover acid to reinforce the cover acid. A character forming portion 57 is formed. The T character forming part is connected to the printing device as shown in Figure 2. engages in a corresponding groove 58 of an extrusion 59 from a plate of the case superstructure.

In other words, in order to install the entire ink drying device, the ink drying device has a T-shape. It is pushed through the section 57 into the groove 58 of the extruded section 59 . Extrusion molding part The support 60 at 59 is provided via pointed ribs 61 formed in the cover acid. (See Figures 2 and 6). bent or twisted by this approximately point-like support The covered acid 45 straightens again and remains stable under heat loads.

At the end, a T-shaped part 57 of the cover acid 45 is hooked and has a stopper claw 62 (see Fig. 5). (see). These locking pawls are used to insert the T-shaped part 47 into the extruded part 59. It gets caught behind the stepped part 63 of the extruded part 59 (see Fig. 5) when it dries. Protect equipment against axial movement.

Heat transfer from the drying device to the extruded part 59 is carried out through the formed void 64 (see Figure 2). ) and point support 60. Further, the accumulated heat is transferred to the hole 65 in the lower shell area. (See Figure 2).

Since the entire drying device is constructed symmetrically, the drying device is The hook can be stopped without paying attention to the installation position.

IG 1 FIG4 FIG5 International search report. , TlC66°/n1cl:n1m+sw++1m@lA1. +-Ceramic PcT/EP9o”165゜International Investigation Report

Claims (1)

[Claims] 1. The recording medium (13) printed by the ink print head (10) is electrically heated. a device for drying at least one recording medium (13); Extending beyond the width, heatable for receiving the recording medium (13) The heating hole (22) is provided with a heating hole (22), and the heating hole is almost inserted into the heating hole during heating. Drying of a recording medium characterized by being configured to produce a uniform temperature distribution Device. 2. The heating vertical hole (13) has opposing heating surfaces (27) that can be heated electrically. , the recording medium (13) is guided to pass between these heating surfaces. The apparatus according to claim 1. 3. The heating surface has a heating plate (28) on which a heating film (24) is arranged. 3. The device according to claim 2, characterized in that: 4. The heating surface (27) has a surface that strongly radiates heat toward the heating vertical hole (13). The apparatus according to claim 2 or 3, characterized in that the apparatus comprises: 5. The heating hole (22) is formed in the shape of a chimney, and when heating, the heating hole (22) be arranged in the printing device in such a way that an air flow (convection) occurs through the marking device. 5. A device according to one of claims 1 to 4, characterized in that: 6. The printing medium (13) is placed in the heating hole (22) at a distance from the heating surface (27). a guiding element (2) for the recording medium (13) configured to be guided through the recording medium (13); 6. Device according to claim 1, characterized in that 5) is provided. 7. a module that allows the device to be replaceably inserted into the retainer (58) of the ink printing device; Claims 1 to 6 characterized in that the structure is configured as (45, 28). The device described in one of the above. 8. The module (45, 28) is located in the holding part (58, 59) of the ink printing device. Heating stand holes (22 ) is assembled from elements (45, 57) symmetrically constructed to form an ink printing device. 8. Device according to claim 7, characterized in that it engages with a holding part (58, 59). 9. A heating unit with a separately manufactured heating hole (22) provided with a heating surface (27) Claims 1 to 8 characterized in that the fabric is configured as a knit (39). The device described in one. 10. A heating standhole (22) with a heating surface (27) attached to the cover element (45) The cover element ( 45) Claims 1 to 9 are characterized by being thermally insulated and covered by The device described in one of the above. 11. A common continuous heating film (29) is provided for the heating surface (27). 11. Device according to one of claims 2 to 10, characterized in that: 12. The heating resistor of the heating film (29) connects the heating surface (27) to the joint area (38) According to claim 11, the amount is reduced in order to reduce heat loss. equipment. 13. A temperature sensor (44) is attached to at least one heating surface (27). 13. Device according to one of claims 2 to 12, characterized in that: 14. an ink print head (10) for printing on a recording medium (13); and a recording medium The print medium (13) is placed after the ink print head (10) in the conveying direction of the print medium (13). It is equipped with an electric heating device (28, 29) for drying, and this electric heating device is small. In an ink printing device that extends beyond the width of at least the printing medium (13) , the printing medium drying device (28, 29) is electrically applied to accommodate the printing medium (13). It has a heating hole (22) that is heated, and this heating hole is in the heating hole (22). It is characterized by being configured to be able to be heated so as to generate a substantially uniform temperature distribution. Ink printing device.