Ink jet recording apparatus having temperature control function
First Claim
1. An ink jet recording apparatus for performing recording by supplying heat energy according to a driving pulse to an ink to form a bubble based on film boiling, and ejecting the ink from a recording head onto a recording medium on the basis of formation of the bubble, comprising:
- driving means for supplying a pre-driving pulse that does not cause ink ejection and a main driving pulse that causes the ink ejection with a rest period between the two pulses for ejection of one ink droplet;
rest period control means for controlling the rest period within a range where an amount of the ink ejection increases in accordance with an increase of the rest period, in order to control an amount of the ink ejection, with said rest period control means controlling the rest period on the basis of a temperature of said recording head; and
means for obtaining a temperature of said recording head by calculating the energy input to said recording head by the driving pulses supplied from said driving means.
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Abstract
An ink jet recording apparatus records by supplying heat energy according to a drive pulse to an ink to form a bubble based on film boiling and ejecting the ink from a recording head onto a recording medium based on formation of the bubble. The ink jet recording apparatus includes a driver for supplying a pre-driving pulse that does not cause ink ejection and a main driving pulse that causes the ink ejection with a rest period between the two pulses for ejection of one ink droplet, and a rest period controller for controlling the rest period within a range where an amount of the ink ejection increases in accordance with an increase of the rest period. Controlling the rest period controls an amount of the ink ejection, with the rest period based on a temperature of the recording head. Also, a temperature of the recording head is obtained by calculating the energy input to the recording head by the supplied driving pulses.
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Citations
10 Claims
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1. An ink jet recording apparatus for performing recording by supplying heat energy according to a driving pulse to an ink to form a bubble based on film boiling, and ejecting the ink from a recording head onto a recording medium on the basis of formation of the bubble, comprising:
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driving means for supplying a pre-driving pulse that does not cause ink ejection and a main driving pulse that causes the ink ejection with a rest period between the two pulses for ejection of one ink droplet; rest period control means for controlling the rest period within a range where an amount of the ink ejection increases in accordance with an increase of the rest period, in order to control an amount of the ink ejection, with said rest period control means controlling the rest period on the basis of a temperature of said recording head; and means for obtaining a temperature of said recording head by calculating the energy input to said recording head by the driving pulses supplied from said driving means. - View Dependent Claims (2, 3, 4, 5)
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6. A method for recording by supplying heat energy according to a driving pulse to an ink to form a bubble based on film boiling, and ejecting the ink from a recording head onto a recording medium on the basis of formation of the bubble, said method comprising the steps of:
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supplying a pre-driving pulse that does not cause ink ejection and a main driving pulse that causes the ink ejection with a rest period between the two pulses for ejection of one ink droplet; controlling the rest period within a range where an amount of the ink ejection increases in accordance with the increase of the rest period, in order to control an amount of the ink ejection, wherein the rest period is controlled on the basis of a temperature of the recording head; and obtaining a temperature of the recording head by calculating the energy input to the recording head by the supplied driving pulses. - View Dependent Claims (7, 8, 9, 10)
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Specification