Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
1999-10-25
2003-03-25
Tran, Huan (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S087000
Reexamination Certificate
active
06536870
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an ink jet recording cartridge provided with an ink jet recording that performs recording on a recording medium by discharging ink from the discharge ports, a method for manufacturing an ink jet recording cartridge, and an apparatus for manufacturing an ink jet recording cartridge. The invention also relates to a recording apparatus.
The present invention is applicable to a printer that records on papers, threads, textiles, cloths, leathers, metals, plastics, glass, woods, ceramics, and other recording media, a copying machine, a facsimile equipment provided with communication system, a word processor or some other apparatuses provided with the printing unit therefor. The invention is also applicable to an industrial printing system complexly structured in combination with various processing apparatuses. Here, in the specification of the present invention, the term “record” means not only the provision of characters, graphics, and other meaningful images, but also, it means the provision of patterns or other images which do not present any particular meaning when recorded on a recording medium.
2. Related Background Art
For the conventional ink jet recording apparatus, there have been used an ink jet recording head that performs recording on a recording medium by discharging ink form the discharge ports, and an ink jet recording cartridge which is formed integrally with an ink tank containing ink to be supplied to the ink jet recording head or which is structured to use the recording head and the ink tank individually. For the ink jet recording apparatus, a carriage is provided to reciprocate in the direction almost orthogonal to the carrying direction of a recording medium. The ink jet recording cartridge is mounted on this carriage.
As the ink jet recording head, there has been known the one that discharges ultra fine liquid droplets by the utilization of thermal energy generated by use of electrothermal transducing devices or the like or the one that discharges liquid droplets by the deflection of each pair of electrodes provided therefor. Of these heads, the ink jet recording head that discharges ink liquid droplets by the utilization of thermal energy makes it possible to record in higher resolution, because the liquid discharge portion (discharge ports) can be arranged in high density for the formation of flying liquid droplets by discharging liquid droplets for use of recording. As a result, among other advantages, an apparatus of the kind has an advantage that not only recording is possible in higher resolution, but also, the apparatus can be made compact with ease. This type of the apparatus has already been in wide use practically.
The ink jet recording head that discharges recording liquid by the utilization of thermal energy is provided with discharge ports (orifices) through which liquid is discharged; liquid flow paths communicated with the discharge ports; and a plurality of discharge energy generating members, such as electrothermal transducing devices, which are arranged for the liquid flow paths, respectively. Then, the structure is arranged so that print recording is made with the provision of discharge energy (thermal energy for creating film boiling in liquid, for example) by the application of driving signals to the discharge energy generating members in accordance with the recording information, which enables liquid to be discharged from the discharge ports as liquid droplets.
Here, with reference to
FIG. 33
, the description will be made of the general structure of the ink jet recording head described above.
The ceiling plate
1100
that constitutes the ink jet recording head H is formed by resin material by molding integrally with a ceiling plate member that forms a liquid chamber
1104
and a plurality of liquid flow paths
1103
to retain liquid; a discharge port formation member
1101
that forms a plurality of discharge ports (orifices)
1102
each communicated with the plural liquid flow paths
1103
, respectively; and a recording liquid supply port
1105
. Also, for the heater board (elemental substrate)
1107
, the heaters (electrothermal transducing devices)
1106
which are arranged in plural lines on a silicon substrate, and the electric wires (not shown) made of aluminum or the like to supply electric power to the heaters are formed by the known film forming technologies and techniques. These are positioned and fixed on the base plate
1110
by the application of the known die bonding techniques. The wiring substrate
1108
is provided with the wiring lines connected with the wiring of the heater board
1107
by use of the known wire bonding, and a plurality of pads
1109
which are positioned at each end portion of the wiring lines to receive electric signals from the apparatus main body. Then, the ceiling plate
1100
and the heater board
1107
are positioned and connected corresponding to each of the liquid flow paths
1103
and heaters
1106
, which are fixed on the base plate
1110
together with the wiring substrate
1108
, hence forming the ink jet recording head H.
The ink jet recording apparatus that uses the ink jet recording head described above is mainly connected with a word processor or a personal computer, and used as a color printer. Besides, it is used as the engine for a facsimile equipment or a copying machine.
FIG. 34
is a perspective view which shows the conventional ink jet recording cartridge. As shown in
FIG. 34
, the ink jet recording head H is mounted in the predetermined position of the ink jet recording cartridge main body
1130
. Then, adjacent to the ink jet recording head H, the sub-tank
1120
is arranged for use of recording liquid. The sub-tank
1120
and the ink jet recording head H are supported by the supporting members
1121
and
1122
. Further, in the interior of the ink jet recording cartridge main body
1130
covered by the covering member
1131
, a recording liquid tank (not shown) is incorporated. With the structure thus arranged, recording liquid is supplied from this tank to the sub-tank
1120
appropriately.
For the ink jet recording head, there is the one having plural colors of ink (four colors, black:Bk, yellow:Y, magenta:M, and cyan:C, for example) each allocated to the divided ink discharge unit in one head, which is a type that although the number of discharge ports per color is small, the costs of manufacture is low. There is also the one having a plurality of ink jet recording cartridges arranged in line with each of the separated recording heads individually arranged per color, although the costs of manufacture is high, which is a type that the number of discharge ports can be increased per color. There is still the one presenting a combined head type in which a plurality of individual ink discharge units are incorporated on one base per color. Here, it is unstable to apply the one head type mode to a higher printing as a matter of course.
In order to enhance the print quality, there is a type in which the plural ink jet recording cartridges are arranged side by side so as to provide the recording heads individually for each color. Then, in some cases, each of the cartridges may be provided with a medium to store the recorded properties of its own or correction data for it. Also, for a type of the combination heads, the positional deviation of ink droplets themselves is measured in advance for those to be discharged from the discharge ports of each color arranged for the orifice plate. Then, the arrangement is made so as to correct the amount of such deviation when assembling each of the recording heads on the base in good precision. Further, the combined head type is such that the plural recording heads are formed on the base integrally. As a result, not only the deviation between each of printed colors is smaller, but also, it is easier to execute the head replacements.
FIG. 35
is a perspective view which shows the assembled body of the conventional ink jet recording head disclosed in the spec
Hosaka Ken
Takahashi Wataru
Takimoto Masafumi
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Tran Huan
LandOfFree
Ink jet recording cartridge, method for manufacturing ink... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ink jet recording cartridge, method for manufacturing ink..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink jet recording cartridge, method for manufacturing ink... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3003763