Claims
- 1. An ink jet recording apparatus comprising:
- a recording head having plural discharge openings for discharging ink onto a recording medium in accordance with data supplied to said recording head, said plural discharge openings being arranged in a direction different from a direction in which said recording head and the recording medium are relatively scanned;
- recognizing means for recognizing a recording dot density of recording data to be recorded on the recording medium;
- thinning means for calculating thinned data based on the recording dot density of the recording data corresponding to said plural discharge openings; and
- supply means for supplying the thinned data to said recording head during the relative scanning of said recording head and the recording medium to improve fixing properties of the ink discharged onto the recording medium.
- 2. An ink jet recording apparatus according to claim 1, wherein the thinned data is produced in response to a type of recording data that represents high recording dot density.
- 3. An ink jet recording apparatus according to claim 1, wherein the thinned data is produced in response to a type of recording data that represents a bit image.
- 4. An ink jet recording apparatus according to claim 1, wherein the thinned data is produced in response to a type of recording data that is a reverse image.
- 5. An ink jet recording apparatus according to claim 1, wherein said thinning means calculates thinned data by performing an AND calculation of the recording data and thinning data.
- 6. An ink jet recording apparatus according to claim 1, wherein the thinned data is calculated in response to the relative scanning.
- 7. An ink jet recording apparatus according to claim 6, wherein the thinning data is subjected to a bit-shift in response to the relative scanning.
- 8. An ink jet recording apparatus according to claim 1, further comprising a mode selection means for selecting a thinning mode for calculating thinned data.
- 9. An ink jet recording apparatus according to claim 8, wherein said thinning means calculates thinned data when said mode selection means selects the thinning mode.
- 10. An ink jet recording apparatus according to claim 1, further comprising thinning rate selection means for selecting a thinning rate for calculating thinned data.
- 11. An ink jet recording apparatus according to claim 10, wherein the thinning data is determined in response to the thinning rate selected by said thinning rate selection means.
- 12. An ink jet recording apparatus according to claim 1, wherein said thinning means has a print buffer for storing the thinned data.
- 13. An ink jet recording apparatus according to claim 1, wherein said recording means includes thermal energy discharge means for discharging ink to effect recording.
- 14. An ink jet recording method comprising the steps of:
- providing a recording head having plural discharge openings for discharging ink onto a recording medium in accordance with data supplied to said recording head;
- recognizing a recording dot density of recording data to be recorded on the recording medium;
- calculating thinned data based on the recording dot density of the recording data corresponding to said plural discharge openings;
- supplying the thinned data to said recording head for recording;
- causing said recording head to relatively scan in a direction different from a direction in which said plural discharge openings are arranged; and
- repeating said recognizing step, calculating step, supplying step and scanning step.
- 15. An ink jet recording method according to claim 14, wherein said recognizing step recognizes whether the recording data is a bit image.
- 16. An ink jet recording method according to claim 14, wherein said recognizing step recognizes whether the recording data is a reverse image.
- 17. An ink jet recording method according to claim 14, wherein said calculating step calculates thinned data by performing an AND calculation of the recording data and thinning data.
- 18. An ink jet recording method according to claim 14, wherein the thinning data is subjected to bit-shifting in every said repeating step.
- 19. An ink jet recording method according to claim 14, further comprising a selection step for selecting a thinning rate calculated in said calculating step.
- 20. An ink jet recording method according to claim 19, wherein a thinning rate is determined in response to the thinning rate selection in said selected step.
- 21. An ink jet recording method according to claim 14, wherein said supplying step includes discharging ink to effect recording by using thermal energy.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-279567 |
Nov 1987 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 07/552,846 filed Jul. 16, 1990, which in turn is a continuation of application Ser. No. 07/266,807 filed Nov. 3, 1988, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (9)
Number |
Date |
Country |
0013296 |
Jul 1980 |
EPX |
0144016 |
Jun 1985 |
EPX |
0160318 |
Nov 1985 |
EPX |
61-008360 |
Jan 1986 |
JPX |
61-104860 |
May 1986 |
JPX |
61-110576 |
May 1986 |
JPX |
61-222758 |
Oct 1986 |
JPX |
62-090248 |
Apr 1987 |
JPX |
62-116153 |
May 1987 |
JPX |
Non-Patent Literature Citations (2)
Entry |
IBM Technical Disclosure Bulletin, "Ink Jet Printing Method", vol. 24, No. 8, Jan., 1982. |
IBM Technical Disclosure Bulletin, "Draft Font Generation", vol. 27, No. 4B, Sept., 1984. |
Continuations (2)
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Number |
Date |
Country |
Parent |
552846 |
Jul 1990 |
|
Parent |
266807 |
Nov 1988 |
|