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Inkjet printer
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An inkjet printer and print head technology, applied in printing devices, printing and other directions, can solve the problems of wrinkling of printing media, poor printing quality, and large wrinkles.
Active Publication Date: 2014-06-25
MIMAKI ENG
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[0006] However, when printing is performed using an inkjet printer as described above, when the ink is ejected onto the printing medium, fine wrinkles are generated and the printing medium is wrinkled.
In addition, there is a problem that when the printing medium with the fine wrinkles is heated by the heater, the wrinkles become larger, and when the wrinkles that become larger due to the heating reach the lower surface of the print head, the printing is caused by interference with the print head. poor quality
Method used
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Embodiment 1
[0038] First, as shown in FIG. 6(a), in Embodiment 1, the same constituent elements as the above-mentioned main plate 72, front plate 73, after heater 83, and groove portion 100, that is, a main plate 172 are provided. , the front plate 173, the rear heater 183, and the tank portion 200, but differ from the above in that there is a height difference between the main plate 172 and the front plate 173, and they are physically separated. By physically separating the main platen 172 from the front plate 173 in this way, the heat of the rear heater 183 can be reliably prevented from reaching the main platen 172, and the transfer of heat to the printing medium M just after ink is sprayed can be more effectively prevented. supply is isolated.
Embodiment 2
[0040] As shown in FIG. 6(b), Embodiment 2 is provided with the same constituent elements as the main platen 72, front plate 73, and post heater 83, that is, the main plate 272, the front plate 273, and the after heater 283, but In addition to the difference in height between the main deck 272 and the front deck 273 and being physically separated as in Embodiment 1, a heat insulating member made of a material with low thermal conductivity is provided between the main deck 272 and the front deck 273 300. With this heat insulating member 300 , the heat of the post heater 283 can be prevented from spreading to the main platen 272 , and the heat of the printing medium M immediately after the ink is ejected can be effectively insulated.
Embodiment 3
[0042] As shown in FIG. 6(c), Embodiment 3 is provided with the same constituent elements as the main platen 72, the front plate 73, and the after heater 83, that is, the main plate 372, the front plate 373, and the after heater 383, but In addition to the fact that the main platen 372 and the front plate 373 have a height difference and are physically separated as in the first embodiment, a cooling pipe 400 is provided between the main platen 372 and the front plate 373 . Inside the cooling pipe 400 , the cooling water 401 is formed so that the heat generated by the rear heater 383 is reliably cooled by the cooling pipe 400 so that the heat of the rear heater 383 does not spread to the main platen 372 . In this way, in Example 3, unlike Examples 1 and 2, since the printing medium M is actively cooled, it is possible to more effectively insulate the heat of the printing medium M immediately after ink is sprayed.
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Abstract
An inkjet printer is provided in which cockles occurred in a printing medium due to heat of a heater are prevented from reaching to the under face of the printer head to prevent degradation of the printing quality. In an inkjet printer which is provided with a heater (81, 82, 83) for heating a platen to raise temperature of a printing medium placed on a placing face of the platen, a carriage (30) and a carriage moving mechanism having a printer head (50) for ejecting ink to the printing medium (M) to perform printing and in which ink is ejected while the printer head (50) is relatively moved to the printing medium (M) to perform printing on the printing medium, and a medium moving mechanism for feeding the printing medium (M) out, a groove part (100) is provided for preventing a portion of the printing medium (M), which is extended to the feeding-out side by a predetermined length from the printing target region where the ink is ejected from the printer head (50), from being heated by the heaters (81, 82, 83).
Description
technical field [0001] The present invention relates to an inkjet printer having a temperature rise preventing portion for preventing creases enlarged by heating from occurring on the lower surface of a print head. Background technique [0002] As an example of a printing device that prints on a printing medium, there is known an inkjet printer with a structure as follows: by supporting a sheet-shaped printing medium on a platen, and setting an upper surface of the platen opposite to the printing medium. The print head, from which ink is ejected onto the print medium to print. When printing with an inkjet printer having such a structure, while the print head is reciprocated, for example, left and right, and the print medium is conveyed in a direction (feed direction) at right angles to the left and right direction, the ink jet formed on the lower surface of the print head is formed on the side. The ink is ejected from the nozzle openings of the print head so that the ink is...
Claims
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Application Information
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