Ink cartridge for ink-jet printer

Abstract

This invention provides a print cartridge used in ink-jet printer. With the pressure cast by an air pressure pump, the print cartridge provides the printing ink for the printing head; inside the said print cartridge installs a printing ink bag, which packs ink inside and is formed by flexible material; between the outer part of the print cartridge and the said printing ink bag mounts a pressure room in which the pressure is produced by the air pressure pump; on the outer part of the print cartridge sets up a pressure air inlet which introduces pressure air produced by the air pressure pump; on the said printing ink bag installs an ink leading-out terminal which can lead out the ink from the printing ink bag; when the print cartridge is dismantled from the printer, the said pressure air inlet opens, so as to interconnect the said pressure room with the atmosphere, and the ink leading out terminal is closed. This invention is characterized in that the print cartridge can easily be assembled and dismantled, and the print cartridge and the constitute parts thereof can be easily reused, and thus saves resources.

Description

[0001] The present invention is a divisional application of the No. 200410080160.8 invention patent application filed on January 15, 2001 with the title of "ink cartridge for inkjet printer". technical field [0002] The present invention relates to an ink cartridge used in an inkjet printer to supply ink to a print head, and an inkjet printer using the ink cartridge. Background technique [0003] Inkjet printers are now widely used for various printing including color printing because they print with less noise and form high-density fine ink droplets. [0004] Inkjet printers generally have an inkjet printing head that is mounted on a carriage and moves in the width direction of the recording paper, and a paper feeding device that moves the recording paper vertically relative to the moving direction of the printing head. Ink drops are ejected to record on recording paper. [0005] If a print head capable of ejecting various ink droplets such as black, yellow, cyan, and dee...

AI Technical Summary

Problems solved by technology

[0023] However, such a shape has the problem of occupying too much volume, which makes the layout design of this type of printer in which ink cartridges of various colors must be arranged side by side troublesome.

[0024] On the other hand, in order to ensure the strength of the shell, it can be considered to increase the wall thickness of the shell, but this will increase the amount of synthetic resin constituting the shell, and it is difficult to save resources.

[0025] In addition, in order to reduce the amount of synthetic resin used, it is conceivable to integrally form a rib on a part of the housing, but it is generally difficult to form ribs inside the housing, for example, when the above-mentioned blow molding is used.

[0026] The second problem is that when the ink cartridge with the above-mentioned conventional structure is installed in the printer for ink replenishment and then removed from the printer, the through-hole 88a formed on the above-mentioned rubber plug 88 is directly blocked due to its elasticity, so the pressure Pressurized air remains in chamber 85

[0045] In this way, for example, when the printer is turned on and started to operate, it takes a long time to enter a printable state, which causes a problem of reduced throughput.

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