Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2000-01-05
2001-05-08
Le, N. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C347S086000
Reexamination Certificate
active
06227663
ABSTRACT:
FIELD OF INVENTION
The present invention generally relates to ink-jet print cartridges and, more particularly, to their construction.
BACKGROUND OF THE INVENTION
The general construction and operation of an ink-jet print cartridge using reticulated polyurethane foam is disclosed in U.S. Pat. No. 4,771,295 entitled “Thermal Ink Jet Pen Body Construction Having Improved Ink Storage and Feed Capacity” by Baker et al. issued Sep. 13, 1988.
Prior print cartridges have been designed to be loaded into and removed from ink-jet printers either vertically or with an inclined arcuate motion. Such a procedure has proven to be satisfactory as long as vertical access to the printer is provided. This has meant, however, that nothing could be permanently stacked on top of the printer.
Further, previous top loading ink-jet printer designs have fostered an increasing growth in printer height so that with each new printer design the profile of the product grew and grew.
Finally, there is a constant need to reduce the cost and the development time for new printer products. This has caused product designers to leverage existing designs and use parts from current products when developing new products for the market place. This desire to reduce start-up costs also has lead product designers to utilize existing tooling and manufacturing lines as well.
Thus, it is apparent from the foregoing that although there are many satisfactory ink-jet print cartridge designs, there is a need for an approach that permits the front loading of print cartridges into printers, reduces the profile of the cartridge itself, uses parts from products currently in production, and utilizes existing manufacturing lines.
SUMMARY OF THE INVENTION
Briefly and in general terms, an ink-jet print cartridge according to the invention includes a print cartridge body, a lid securely affixed to the body, and a latch located on the lid and displaced away from the margin of the lid and the body.
An other aspect of the invention includes an ink-jet print cartridge having an elongate lip located on a side wall of the cartridge for supporting the cartridge during loading.
Still a further aspect of the invention includes a gripping surface remotely located from the latch for aiding the user when loading and unloading the print cartridge from the printer.
Other aspects and advantages of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
REFERENCES:
patent: 5595223 (1997-01-01), Hayao
patent: 5984465 (1999-11-01), Yun
patent: 6070974 (2000-06-01), Kotaki et al.
Kline Daniel S
Santhanam Ram
Scholz Marcus
Yamamoto Junji
Hewlett--Packard Company
Le N.
Vo Anh T. N.
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