Laser process for making a filter for an ink jet
a technology of ink jet and filter, which is applied in the field of laser process for making a filter for an ink jet, can solve the problems of difficulty in setting the hole diameter of the filter freely, no particular measures are taken in the manufacture process to prevent dust particles from adhering to the space between the ink liquid chamber and other parts, and the inability to manufacture a filter head. the effect of reducing the number of manufacturing processes, fine resolution and reducing the number of filter heads
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embodiment 1
Hereinafter, the present invention will be described in accordance with the embodiments.
FIG. 1A is a view which schematically shows an ink jet recording head in accordance with the present invention. In FIG. 1A, a reference numeral 1 designates an element for generation liquid discharging energy; 2, a first base board having the element for generating liquid discharging energy formed on it; 3, a recess for forming an ink path corresponding to the portion where the element 1 for generating liquid discharging energy is arranged; 4, a common liquid chamber; 5, a second base board having the recess 3 for forming the ink path and the common liquid chamber 4; 6, discharge ports for discharging ink by being conductively connected to the recess 3 for forming the ink path; 7, column members; and 8, a filter unit formed by the column members 7.
An element for generating thermal energy is used as the element 1 for generating liquid discharging energy. For the first base board 2, a thin board cu...
embodiment 2
Now, another embodiment of the present invention will be described. A schematic view of an ink jet recording head is shown in FIG. 3 in which the filter unit described in the embodiment 1 is provided for the common liquid chamber. Also, FIG. 4 shows the configuration of the mask 10 used when manufacturing this head.
As shown in FIG. 3, two rows of the column members 7 each configured to be 10 μm×50 μm×10 μm (direction A×direction B×direction C) are arranged in the common liquid chambers 4 so that the gaps thereof become 10 μm. The column members can be processed at a time by the laser beam processing as in the embodiment 1, and the processing yield of the ink jet recording heads and the printing quality thereof are improved.
embodiment 3
Now, the description will be made of another embodiment in accordance with the present invention. FIG. 5 is a view which schematically shows an ink jet recording head for which the filter unit is provided between the elements for generating liquid discharging energy and the orifices. In the ink path groove 6, a filter unit having a gap of 13 μm can be manufactured by laser beam processing under the same condition as the first embodiment by arranging two column members 7 each configured to be 5 μm×50 μm×5 μm (direction A×direction B×direction C) in one row in the direction A. Also, both the manufacturing yield and printing quality of the ink jet recording heads thus processed are improved.
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Abstract
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