Liquid ejection device, drive circuit and integrated circuit
A technology of integrated circuits and output circuits, which is applied in the fields of drive circuits, integrated circuits, and liquid ejection devices, and can solve problems such as increased circuit scale
Active Publication Date: 2022-04-26
SEIKO EPSON CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, the scale of the circuit provided in the head unit may increase, and there is room for improvement in terms of miniaturization of the circuit scale.
Method used
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Embodiment Construction
[0108] Hereinafter, preferred embodiments of the present invention will be described using the drawings. The drawings used are for convenience of description. In addition, the embodiment described below does not unduly limit the content of the present invention described in the claims. In addition, not all structures described below are necessarily essential structural requirements of the present invention.
[0109] 1. Structure of liquid ejection device
[0110] First, the configuration of the liquid ejection device 1 will be described. figure 1 It is a figure which shows the outline of the structure of the liquid ejection apparatus 1 concerning this embodiment. In addition, in figure 1 , the mutually orthogonal X direction, Y direction, and Z direction are illustrated. In addition, in the following description, it will sometimes be equivalent to figure 1 The upper side in the +Z direction is called "upper part", and the lower side corresponding to the -Z direction is c...
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The present invention provides a liquid ejection device, a drive circuit, and an integrated circuit capable of reducing the possibility of an increase in the scale of a circuit provided in a head unit. The liquid ejection device includes a head unit for ejecting liquid. The head unit has an integrated circuit and an ejection portion for ejecting liquid. The integrated circuit has: a drive signal input terminal for inputting a first drive signal; A signal input terminal; a second signal input terminal for inputting a second signal; a first reference voltage signal input terminal for inputting a first reference voltage signal; a differential signal receiving circuit that converts a pair of first differential signals into control signals and outputs them ; a drive signal selection circuit that outputs a second drive signal based on the control signal and the first drive signal; a drive signal output terminal that outputs the second drive signal to the ejection unit, and in the liquid ejection device, the first signal input terminal and The first reference voltage signal input terminals are adjacently arranged.
Description
technical field [0001] The invention relates to a liquid ejection device, a driving circuit and an integrated circuit. Background technique [0002] In an inkjet printer (liquid ejection device) that ejects ink as a liquid to print images or documents, there is known a technique using piezoelectric elements such as piezoresistive elements. In such an inkjet printer, a piezoelectric element is provided in a print head so as to correspond to each of a plurality of nozzles. Then, by supplying a drive signal to the piezoelectric elements at predetermined timing, each piezoelectric element is driven, and a predetermined amount of ink is ejected from the nozzles, thereby forming an image or a document on a printing medium. [0003] The number of nozzles included in inkjet printers has been increasing in response to demands for further improvement in printing accuracy in recent years. Also, as the number of nozzles increases, the amount of data transferred to the printhead also i...
Claims
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IPC IPC(8): B41J2/01B41J2/045
CPCB41J2/01B41J2/04501B41J2/04541B41J2/04581B41J2/04588B41J2/04593B41J2/04596B41J2/04563B41J2/0451B41J2/14233B41J2002/14491B41J2002/14362B41J2002/14419B41J2002/14354B41J2002/14435B41J2/025
Inventor 山田友和
Owner SEIKO EPSON CORP