| Patent Number |
Title Of Patent |
Date Issued |
| 6543872 |
Ink-jet printing method and apparatus for printing with inks of different densities |
April 8, 2003 |
| It is checked whether an ink used in a printhead has a high density. The type of a printing medium used for a print operation is also identified. An image is printed by scanning the printhead once or a plurality of times. When a print operation is to be performed by using a thick ink, an |
| 6394571 |
Method and apparatus for controlling printing operation with externally supplied parameters |
May 28, 2002 |
| A control portion for arithmetically predicting a temperature transition of a printing head using a predicting parameter includes an interface for receiving the predicting parameter from outside of the apparatus. The predicting parameter is based on a table regarding temperature increase |
| 6352327 |
Printing apparatus and print control method |
March 5, 2002 |
| A printing apparatus and print control method, capable of using plural types of printheads, can achieve high throughput by performing optimized print control in accordance with the type of printhead and the number of printheads used. In a case where the printing apparatus adopting such |
| 6328403 |
Print method and apparatus |
December 11, 2001 |
| Multi-valued image data is separated into data in units of nozzle groups of the individual colors of a printhead, and each divided multi-valued image data is converted into n-valued image data consisting of a plurality of bits. Based on the n-valued image data of the corresponding colors |
| 6305775 |
Ink-jet printing method and apparatus therefor |
October 23, 2001 |
| Each nozzle of an ink-jet head has heaters having different heating capacities, and in accordance with the heater driven, a diameter of an ink dot formed by ink which is discharged from the nozzle is changed, thereby printing a large dot or a small dot. When multi-value image data is |
| 6260938 |
Ink-jet printing method and apparatus for printing with inks of different densities |
July 17, 2001 |
| It is checked whether an ink used in a printhead has a high density. The type of a printing medium used for a print operation is also identified. An image is printed by scanning the printhead once or a plurality of times. When a print operation is to be performed by using a thick ink, an |
| 6227646 |
Ink jet recording apparatus |
May 8, 2001 |
| If it is detected that the number of times of ejection recovery operations performed in the past by the request of a user during an ink jet recording operations is greater than or equal to a designated relatively large value, for example "2", the ink jet recording apparatus judges that a |
| 6158836 |
Print method and apparatus |
December 12, 2000 |
| Multi-valued image data is separated into data in units of nozzle groups of the individual colors of a printhead, and each divided multi-valued image data is converted into n-valued image data consisting of a plurality of bits. Based on the n-valued image data of the corresponding colors |
| 6145950 |
User interface, printing system using user interface and print control method |
November 14, 2000 |
| A user interface for high-quality image output and an image processing apparatus utilizing the user interface which performs apparatus setting for appropriate printing by selecting a print medium and a print mode in accordance with the type of ink cartridge. When an exchangeable ink |
| 6142600 |
Print control method and printer |
November 7, 2000 |
| Disclosed are an inkjet printing method and an inkjet printer capable of printing high-quality images by the inkjet printing method even when ink is exchanged for ink having a different density, particularly ink having a lower density. A printer using this method identifies the type of a |
| 6118457 |
Resolution conversion with preservation of fine lines and of hue |
September 12, 2000 |
| An image processing method and apparatus which prestore a mask pattern generated using a pseudo-random number in a ROM within the apparatus, and perform image data conversion using the mask pattern. This avoids overlap between the pixel pattern of the image data and the mask pattern in a |
| 6092939 |
Printing apparatus and printing registration method |
July 25, 2000 |
| A printing apparatus and a printing registration method permits printing registration between a forward and a reverse scan of a head cartridge between a plurality of head cartridges without troubling a user and simply. By forward and reverse scan of the head cartridge, a plurality of |
| 6086184 |
Recording control method and recording control apparatus, and recording apparatus and recording |
July 11, 2000 |
| A recording system and a recording method which can perform the recording operation without increasing an image storage capacity of a recording apparatus even if image data is increased with an increase in a recording resolution. Picture element data of image data is split into a plurali |
| 6075894 |
High-quality edge-smoothing based upon a determination of consecutive black dots |
June 13, 2000 |
| An image processing method and an apparatus capable of employing the method, which smooth notches on outlines and output an image of high quality having smooth outlines. First, edges to be smoothed are determined, then numbers of consecutive black dots in the horizontal and vertical |
| 5975673 |
Image output method and apparatus for smoothing image data by manipulating dot sizes |
November 2, 1999 |
| According to an image processing method and apparatus of the present invention, an outline portion is extracted from input image data, and a pixel whose dot size is to be changed is extracted. The input image data is printed without any change, and the pixel whose dot size is to be c |
| 5493319 |
Method of restoring ink ejection by heating an jet head before cleaning |
February 20, 1996 |
| An ink jet recording apparatus for recording information by ejecting ink fluid on a recording medium includes a recording head, a cap, an ejection restoration mechanism, an atmospheric air opening mechanism and a heating mechanism. The recording head has an orifice and ejects ink fluid f |
| 5181971 |
Magnet and method of manufacturing the same |
January 26, 1993 |
| This specification discloses a method of manufacturing a magnet roller having the step of disposing a plurality of pairs of magnetic poles each comprising the starting magnetic pole and terminal magnetic pole of a magnetic line of force on the peripheral surface of a cavity in a metal |
| 4954800 |
Magnet and method of manufacturing the same |
September 4, 1990 |
| This specification discloses a method of manufacturing a magnet roller having the step of disposing a plurality of pairs of magnetic poles each comprising the starting magnetic pole and terminal magnetic pole of a magnetic line of force on the peripheral surface of a cavity in a metal |
