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Cap and printing apparatus

A technology for supporting parts and nozzle plates, applied in printing devices, printing, etc., can solve problems such as deterioration of joint strength and peeling of nozzle plates

Active Publication Date: 2019-05-14
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the printing device is used for a long time, the bonding strength of the nozzle plate deteriorates over time
In addition, if the suction operation of bringing the cap into contact with the nozzle plate to bring the inside of the cap into a negative pressure state is repeated, the central part of the nozzle plate that is not in contact with the outer periphery of the cap may be formed from the flow path due to the negative pressure. Substrate peeling

Method used

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  • Cap and printing apparatus
  • Cap and printing apparatus
  • Cap and printing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0045]

[0046] figure 1 It is a schematic view showing a schematic overall configuration of a printing apparatus according to an embodiment. First, refer to figure 1 The schematic configuration of the printing apparatus 100 according to the present embodiment will be described. In the present embodiment, the ink jet type printing apparatus 100 for printing the medium 95 is described as an example of forming an image or the like on the medium 95.

[0047] Such as figure 1As shown, the printing apparatus 100 has a medium conveying unit 20, a medium closing portion 60, a printing portion 40, a drying unit 27, a cleaning unit 50, an attraction portion 45, and the like. Moreover, a control unit 1 that controls the respective portions. Each portion of the printing apparatus 100 is mounted on the frame portion 92.

[0048] The medium conveying unit 20 is used to convey the medium 95 to the conveying direction (in the printing portion 40 in the + Y-axis direction). The medium conveying...

Deformed example 1

[0100] Figure 7 The composition of the cover involved in the modification is shown is Figure 4 A cross-sectional view of the A-A line. Figure 8 Yes Figure 4 Cross section of the B-B line. Next, referring to Figure 7 and Figure 8 The configuration of the cover 144 of this modification will be described. The same components as those in the present embodiment are labeled with the same reference numerals, and the repetitive description is omitted.

[0101] Such as Figure 7 and Figure 8As shown, the cover 144 has a support portion 144c that abuts between the nozzle plate 49 between the nozzle column 49 in a state where the nozzle column 49 is brought into contact with the discharge head 42 (nozzle plate 48). Thereby, it is possible to suppress the peeling of the nozzle plate which occurs due to the atduction of the attractive force of the attraction of the negative pressure pump 46 due to the engagement of the bonding strength of the bonding the nozzle plate 48 and the flow path formi...

Deformed example 2

[0104] Figure 9 The composition of the cover involved in the modification 2 is Figure 4 A cross-sectional view of the A-A line. Figure 10 Yes Figure 4 Cross section of the B-B line. Next, referring to Figure 9 and Figure 10 The configuration of the cover 244 of the present modification will be described. The same components as those in the present embodiment are labeled with the same reference numerals, and the repetitive description is omitted.

[0105] Such as Figure 9 and Figure 10 As shown, the cover 244 has a plate-like support portion 244c that supports the nozzle plate 48 between the nozzle column 49 in contact with the discharge head 42 (nozzle plate 48). Thereby, it is possible to suppress the peeling of the nozzle plate which occurs due to the atduction of the attractive force of the attraction of the negative pressure pump 46 due to the engagement of the bonding strength of the bonding the nozzle plate 48 and the flow path forming the substrate 83.

[0106] The cover 2...

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PUM

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Abstract

The invention provides a cap and a printing apparatus, which can inhibit a nozzle plate from being peeled off. The cap (44) configured to come into contact with a discharging head (42) including a nozzle plate (48) provided with a plurality of nozzle columns (49) configured to discharge liquid, and to cover the nozzle plate (48) includes support parts (44c) each configured to come into contact with an area between the nozzle columns (49) and to support the nozzle plate.

Description

Technical field [0001] The present invention relates to a cover and a printing device. Background technique [0002] In the past, the printing apparatus of the inkjet method such as the ink or the like from the nozzle of the ejection head was known. In such a printing apparatus, since the ink opening of the nozzle opening is mixed into the air bubble in the nozzle, the abnormal ejection of the ink is mixed in the air bubble in the nozzle opening due to the evaporation of the ink solvent. Therefore, in the printing apparatus has a cover for applying a negative pressure by abutting against a nozzle plate formed with a nozzle, and proposes a variety of improved lids. For example, a cover having a valve having an atmospheric communication with an atmosphere is disclosed in Patent Document 1. [0003] However, in the printing apparatus of industrial use, in order to cope with high quality, production efficiency, production efficiency, use large ejection heads. Thereby, the nozzle plat...

Claims

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Application Information

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IPC IPC(8): B41J15/04B41J29/393B41J11/00B41J29/17B41J2/165B41J2/14
CPCB41J2/16508B41J2/16523B41J2/16585
Inventor 藤岛一星
Owner SEIKO EPSON CORP