News Column

Patent Issued for Ink Cartridge on Inkjet Printer

July 15, 2014



By a News Reporter-Staff News Editor at Information Technology Newsweekly -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventor Ma, Haoming (Zhuhai, CN), filed on December 4, 2012, was published online on July 1, 2014.

The patent's assignee for patent number 8764174 is Zhuhai Ninestar Management Co., Ltd. (Guangdong, CN).

News editors obtained the following quote from the background information supplied by the inventors: "The traditional inkjet printer usually adopts an inkjet printhead mounted on a carriage which can transversely move back and forth along a printing medium (such as a piece of paper). When the printhead transversely moves along the printing medium, the printhead is driven by a control system to eject or spray ink drops onto the printing medium, so as to form images and characters.

"An ink container which can be replaced separately with the printhead is traditionally used by the printer. When the ink of an ink cartridge is out, the ink cartridge is removed and replaced by a new ink container. By adoption of the ink container, a user can independently replace the ink container and does not need to replace the printhead, and then the printhead can be used for printing until the service life of the printhead is ended.

"What is favorable to the user of the printer is that: the information is stored into the ink containers, so that the quality of output images can be best and the useability of the printer can be improved. For example, the American patent U.S. Pat. No. 6,264,301 discloses an ink container provided with a storage device which is arranged on the ink container and used for storing the parameters of a printer.

"The convenience of the printer is that: after the ink cartridge is installed on the printer by the user, an internal driver of the printer can automatically adjust the status of the printer for the printer to be suitable for printing. The driving conditions include the driving voltage, the pulse width, the frequency and the scheduled discharge. By adoption of the method, the printer can be at the optimum status for printing specified ink and the driving conditions do not need to be manually adjusted.

"The information storage device identified by the printer is arranged on the ink container. The printer can only drive corresponding procedures after reading information from the information storage device. For the information storage device of the ink container to be in good contact with the printer, the Chinese patent CN97123110.9 discloses a technique, wherein locking members on an ink container can be engaged with locking members on a printer, so as to guarantee that an information storage device of the printer can be tightly engaged with a contact of the printer; and the locking members on the printer is made from an elastic steel sheet.

"FIG. 1 is a schematic diagram illustrating the state when the traditional ink cartridge is installed on a printer, wherein the ink cartridge can be inserted into an ink cartridge installation mechanism 20 of the printer; and an ink cartridge 1 is provided with a given amount of medium printing fluid such as ink.

"When the ink cartridge is correctly aligned and installed into the ink cartridge installation mechanism 20, locking members 68 on the printer are engaged with corresponding locking members 64 on the ink cartridge, so as to lock the ink cartridge into the ink cartridge installation mechanism 20. The locking members 68 are made from a steel sheet, and one end of the locking members 68 is fixed on the ink cartridge installation mechanism 20 of the printer. After the ink cartridge is pulled out and inserted in for a plurality of times, an ink level detection component of the printer tends to hit the ink cartridge out of the ink cartridge installation mechanism 20.

"The ink level detection of the ink container of the printer adopts the means of hitting, namely using a soft membrane and a pump. When there is ink in the ink container, a detection cavity is sealed by the internal pump; and as there is ink in the detection cavity, the hitting resistance is relatively large when the ink level detection mechanism of the printer hits and a pressure sensor may determine that there is ink in the ink cartridge. When there is no ink in the ink container, the detection cavity is sealed by the internal pump; and as there is no ink in the detection cavity, the volume of internal gas is compressed when the ink level detection mechanism of the printer hits and then the hitting resistance is relatively small, and consequently the pressure sensor may determine that there is no ink in the ink cartridge. As a hitting force of the ink level detection mechanism of the printer is between 1,000N and 1,500N and the hitting direction is consistent with the removing direction of the ink cartridge, the locking members on the printer tends to be loosened after long-term hitting of the printer, and then the problems of poor contact of a chip and abnormal disengagement of the ink container may occur."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventor's summary information for this patent: "The invention provides an ink cartridge on an inkjet printer to solve the technical problems of poor contact of a chip and abnormal disengagement of an ink container as locking members on the printer are loosened after the printer has hit an ink level detection mechanism of an ink cartridge for a long time when the ink cartridge on the traditional inkjet printer is used.

"In order to solve the technical problems, the invention adopts the technical proposal that:

"The invention relates to an ink cartridge on an inkjet printer, which comprises a cartridge body and a slide lid slideably connected with the cartridge body, wherein a fixed clamp is formed on both sides of the cartridge body respectively; a movable wall engaged and fastened with the fixed clamp at the end of the fixed clamp is formed on both sides of the slide lid respectively; and a friction force generating component is arranged on one side of the movable wall, close to an ink cartridge bin of the printer.

"The friction force generating components are made of sponge or silicone materials with high friction coefficient and adhered to the movable walls via adhesives.

"The movable walls are made of elastic polypropylene materials; and one end of each movable wall is connected with the slide lid and the other end of each movable wall moves around the slide lid.

"One end of each fixed clamp is fixedly connected with the cartridge body and the other end of each fixed clamp is provided with a filleted clamp.

"Movable clamps are formed at positions at which the movable walls are engaged with the filleted clamps of the fixed clamps.

"Ribs for guiding the installation of the ink cartridge are formed on the surface of the slide lid, on which at least one movable wall is disposed.

"The cartridge body has an ink cavity, a soft membrane, a cartridge body cover, a bottom case, an ink outlet, a lever and a shaft engagement position, wherein the ink cavity is formed between the bottom case and the soft membrane; one end of the lever is fixedly connected with the soft membrane; the central section of the lever is connected with the bottom case via a shaft in the shaft engagement position; and the other end of the lever is engaged with a hitting device of the printer in the case of installation.

"The cartridge body also has an information storage device which is a chip for storing the information of the ink cartridge, including the ink level, the color, the model and the production date.

"By adoption of the technical proposal, as each friction force generating component is arranged on one side of each movable wall, close to the ink cartridge bin of the printer, two sidewalls of the movable walls are tightly engaged with the inner wall of the ink cartridge bin of the printer to lock the ink cartridge and fix the ink cartridge into the ink cartridge bin of the printer in virtue of the friction forces generated by the friction force generating components. Furthermore, the friction force generating components have certain elasticity, and also have good restorability after long-term use. Therefore, the technical problems of poor contact of the chip and abnormal disengagement of the ink container as the locking members is loosened after the printer has hit the ink level detection mechanism of the ink cartridge for a long time when the ink cartridge on the traditional inkjet printer is used can be solved."

For additional information on this patent, see: Ma, Haoming. Ink Cartridge on Inkjet Printer. U.S. Patent Number 8764174, filed December 4, 2012, and published online on July 1, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8764174.PN.&OS=PN/8764174RS=PN/8764174

Keywords for this news article include: Information Technology, Information and Data Storage, Zhuhai Ninestar Management Co. Ltd.

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Source: Information Technology Newsweekly


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