International United Technology Company, Ltd.

Hong Kong Applied Science and Technology Research Institute Company, Limited

Wei-Fu Lai

Francis Chee-Shuen Lee

Jui-Hua Hu

Hung-Lieh Hu

Ming-Ling Lee

Jia-Lin Chen

Chee-Shuen Lee

A thermal inkjet printhead chip structure includes a substrate, an oxide layer formed on the substrate, at least one driver circuitry each including a source, a drain and a gate and formed on the substrate and further surrounded by the oxide layer, a dielectric layer, a buffer layer, a resistive layer and a conductive layer. The dielectric layer is formed on the driver circuitry and has openings formed therethrough to expose the source and drain. The buffer layer is formed on the dielectric layer, covering the source and drain and connected to the source and drain. The resistive layer is formed on the buffer layer and has at least one heating area. The resistive layer extends above the source and drain and is connected to the source and drain. The conductive layer is formed on the resistive layer and exposes the heating area. A manufacturing method also is provided.

Thermal inkjet printhead chip structure and manufacturing method for the same

The present invention relates to a printhead for thermal inkjet printing and the printing method thereof. The printhead includes: a substrate having a plurality of orifices with a firing element in each of said plurality of orifices, wherein said plurality of orifices are arranged in a single column, and said printhead is disposed at an angle to a horizontal direction along which said printhead scans; and firing circuits for energizing said plurality of firing elements to eject ink on a printing medium by respectively transmitting a plurality of firing signals to said plurality of firing elements. According to the present invention, the print speed and resolution can be improved.

Printhead for thermal inkjet printing and the printing method thereof

Ink cartridge

An ink jet printhead module adapted for use in a printing apparatus, the ink jet printhead module being capable of receiving address signals and chip selection signals from a printhead drive unit of the printing apparatus. The printhead module includes chip control circuits, each being capable of receiving the address signals and receiving a corresponding one of the chip selection signals. Each chip control circuit includes switching circuits and an ink jetting circuit set. Each switching circuit is capable of receiving a corresponding one of the address signals and the corresponding one of chip selection signals and outputting a switching signal. An ink jetting circuit set includes ink jetting circuits, each being capable of receiving the switching signal from the corresponding switching circuit electrically coupled to the ink jetting circuit and determining whether or not to jet out ink based on the received switching signal.

Ink jet printhead module and ink jet printer

An ink jet printhead module including multiple chip control circuits is provided. The ink jet printhead module is capable of receiving multiple address signals and multiple chip selection signals from a printhead drive unit of the printing apparatus. Each of the chip control circuits is capable of receiving the address signals and a corresponding one of the chip selection signals. Each of the chip control circuits includes multiple switching circuits and an ink jetting circuit set. Each of the switching circuits is capable of receiving a corresponding one of the address signals and the corresponding one of the chip selection signals and outputting a switching signal. The ink jetting circuit set includes multiple ink jetting circuits. Each of the ink jetting circuits is capable of receiving the switching signal from the corresponding switching circuit and determining whether or not to jet out ink based on the received switching signal.

An inkjet printhead including a substrate, a plurality of heaters, multiple pairs of leads, an ink chamber layer, and a nozzle plate is provided. The substrate has a top surface and a plurality of ink channels through the substrate in the direction substantially vertical to the top surface. The heaters, the multiple pairs of leads, and the ink chamber layer are disposed on the surface of the substrate. The multiple pairs of leads are electrically coupled to the corresponding heaters respectively, and the heaters are respectively adjacent to the corresponding ink channels. The ink chamber layer has a plurality of ink chambers which respectively expose the corresponding heaters and the corresponding ink channels. The nozzle plate is disposed on the ink chamber layer and has a plurality of nozzles through the nozzle plate.

Inkjet printhead

An inkjet printhead chip includes a substrate, transistors, isolation structures, a dielectric layer, a resistive layer and conductive sections. Each transistor includes a gate, a source, a drain and a gate oxide disposed between the gate and the substrate. The isolation structures are on the substrate surface and isolate the transistors. The dielectric layer covers the transistors and the isolation structures, and has openings exposed the source and the drain. Several heating regions are in the resistive layer that is on the dielectric layer. In the conductive sections, the first conductive section is on the resistive layer and exposes the heating regions for forming several heating devices. Each heating device has resistance less than 95 ohm and power density less than 2 GW/m; the second conductive section and the third conductive section are electrically coupled to the drain and the source through the openings of the dielectric layer respectively.

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Taichung County, Taiwan

Wei-Fu Lai