Claims
- 1. A liquid jet recording apparatus for jetting ink droplets to a recording medium in accordance with image data on demand so that an image having pixels corresponding to the image data is formed on said recording medium, said liquid jet recording apparatus comprising:ink jetting orifices from which ink droplets are jetted, an area of each of said ink jetting orifices being equal to or less than 500 μm2; and control means for controlling a frequency with which the ink droplets are jetted to fall within a range from 8 KHz to 40 KHz, a flying velocity of each ink droplet being equal to or greater than 5.2 m/sec., wherein said control means further controls a number of ink droplets which are jetted to form each pixel of the image formed on said recording medium based on the image data, the number of ink droplets jetted being equal to or less than twenty, and wherein each of said ink jetting orifices has a size that an amount of ink is jetted so that adjacent pixels are separated from each other on said recording medium when each pixel is formed of a single ink droplet, thereby forming a gray image, the image becoming darker based on the number of ink droplets jetted to form each pixel.
- 2. A liquid jet recording apparatus for jetting ink droplets to a recording medium in accordance with image data on demand so that an image having pixels corresponding to the image data is formed on said recording medium, said liquid jet recording apparatus comprising:ink jetting orifices from which ink droplets are jetted, an area of each of said ink jetting orifices being equal to or less than 500 μm2; and a controller for generating and providing signals to said ink jetting orifices, said controller controlling a frequency with which the ink droplets are jetted from said ink jetting orifices to fall within a range from 8 KHz to 40 KHz, a flying velocity of each ink droplet being equal to or greater than 5.2 m/sec., wherein said controller further controls a number of ink droplets which are jetted to form each pixel of the image formed on said recording medium based on the image data, the number of ink droplets jetted being equal to or less than twenty, and wherein each of said ink jetting orifices has a size that an amount of ink is jetted so that adjacent pixels are separated from each other on said recording medium when each pixel is formed of a single ink droplet, thereby forming a gray image, the image becoming darker based on a number of ink droplets jetted to form each pixel.
- 3. A liquid jet recording method for jetting ink droplets to a recording medium in accordance with image data on demand so that an image having pixels corresponding to the image data is formed on said recording medium, said liquid jet recording method comprising steps of:providing ink jetting orifices from which ink droplets are jetted, an area of each of said ink jetting orifices being equal to or less than 500 μm2; and controlling a frequency with which the ink droplets are jetted to fall within a range from 8 KHz to 40 KHz, a flying velocity of each ink droplet being equal to or greater than 5.2 m/sec., and further controlling a number of ink droplets which are jetted to form each pixel of the image formed on said recording medium based on the image data, the number of ink droplets jetted being equal to or less than twenty, and wherein each of said ink jetting orifices has a size that an amount of ink is jetted so that adjacent pixels are separated from each other on said recording medium when each pixel is formed of a single ink droplet, thereby forming a gray image, the image becoming darker based on a number of ink droplets jetted to form each pixel.
Priority Claims (3)
Number |
Date |
Country |
Kind |
4-259521 |
Sep 1992 |
JP |
|
5-28019 |
Feb 1993 |
JP |
|
5-106706 |
May 1993 |
JP |
|
Parent Case Info
This is a continuation of application Ser. No. 08/738,788 filed Oct. 29, 1996, now U.S. Pat. No. 5,877,786 which is a divisional of application Ser. No. 08/127,951 filed Sep. 27, 1993, now U.S. Pat. No. 5,610,637.
US Referenced Citations (21)
Foreign Referenced Citations (12)
Number |
Date |
Country |
0259541 |
Mar 1988 |
EP |
0476860 |
Mar 1992 |
EP |
56-9429 |
Mar 1981 |
JP |
59-43312 |
Oct 1984 |
JP |
59-207265 |
Nov 1984 |
JP |
63-53052 |
Mar 1988 |
JP |
2276648 |
Nov 1990 |
JP |
3173653 |
Jul 1991 |
JP |
3-173654 |
Jul 1991 |
JP |
3221456 |
Sep 1991 |
JP |
4118245 |
Apr 1992 |
JP |
0550612 |
Mar 1993 |
JP |
Continuations (1)
|
Number |
Date |
Country |
Parent |
08/738788 |
Oct 1996 |
US |
Child |
09/030271 |
|
US |