| Patent Number |
Title Of Patent |
Date Issued |
| 6729711 |
Ink jet recording apparatus |
May 4, 2004 |
| An ink jet recording apparatus comprises a carriage movable in a given direction with a recording head which is detachably mountable on it and provided with discharge ports for discharging liquid. The apparatus is arranged to include a sensor for detecting the presence or absence of the |
| 6447096 |
Ink jet recording apparatus and recovery method therefor |
September 10, 2002 |
| An ink jet recording apparatus comprises a recording head having discharge ports to discharge ink; an ink tank containing ink to be supplied to the recording head; and device for performing predischarges to stabilize ink discharges from the recording head. In this apparatus, the recordin |
| 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 |
| 6340217 |
Ink jet recording apparatus and recovery method thereof |
January 22, 2002 |
| An ink jet recording apparatus comprising a recording head having discharge ports for discharging the ink, an ink tank for storing said ink to be supplied to the recording head, and suction recovery device for stabilizing the ink discharge from the recording head, characterized in th |
| 6312102 |
Color ink jet recording method and apparatus using black ink and color-mixed black ink |
November 6, 2001 |
| Whether or not a color image is present adjacent to a black image is discriminated. Whether the black image is formed using a black ink or a plurality of color inks C, M, and Y is determined in accordance with the discrimination result. When the black image is formed using the plurality |
| 6193351 |
System to perform ink jet printing head recovery |
February 27, 2001 |
| An ink jet printing system to perform printing by ejecting ink toward a printing medium by employing a printing head having ink passages for ejecting ink through ejection openings and a common ink chamber supplying the ink into the ink passages. The system includes detection of a per |
| 6164754 |
Liquid discharging recording apparatus with elastic head cleaning member |
December 26, 2000 |
| A liquid discharging apparatus using a liquid discharging head for discharging a liquid, including a cleaning unit for cleaning a nozzle section of the liquid discharging head. The cleaning unit is formed of an elastic pillar member not absorbing the liquid and is elastically deformed |
| 6137503 |
Ink jet recording apparatus |
October 24, 2000 |
| An ink jet recording apparatus comprises a carriage movable in a given direction with a recording head which is detachably mountable on it and provided with discharge ports for discharging liquid. The apparatus is arranged to include a sensor for detecting the presence or absence of the |
| 6116720 |
Ink jet recording method and apparatus for preventing color boundary blur |
September 12, 2000 |
| A head for discharging yellow ink, magenta ink, cyan ink and first black ink having a relatively fast penetration velocity to a recording medium and a head for discharging second black ink having a relatively low penetration velocity are used to print an image. When a black image is |
| 6086185 |
Ink jet recording method and ink jet recording apparatus |
July 11, 2000 |
| When the color printing is performed using a recording head arranged such that number of nozzles for discharging black ink is greater than the number of nozzles for discharging inks of other colors, the use frequency of some nozzles among all the nozzles for discharging the black ink is |
| 6084604 |
Color ink jet recording method and apparatus using black ink and color-mixed black ink |
July 4, 2000 |
| Whether or not a color image is present adjacent to a black image is discriminated. Whether the black image is formed using a black ink or a plurality of color inks C, M, and Y is determined in accordance with the discrimination result. When the black image is formed using the plurality |
| 6079809 |
Ink jet recording apparatus and method including prevention of color mixing through selective pr |
June 27, 2000 |
| An ink jet recording apparatus comprises a recording head having discharge ports to discharge ink; an ink tank containing ink to be supplied to the recording head; and means for performing predischarges to stabilize ink discharges from the recording head. In this apparatus, the recording |
| 5992971 |
Ink jet recording method and apparatus |
November 30, 1999 |
| An ink jet recording method uses black ink and a plurality of inks having different colors, which have ink penetration properties different from that of the black ink. The method includes generating multi-level black recording datum on the basis of a multi-level color recording datum of |
| 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 |
| 5949447 |
Ink jet printer having exchangeable recording devices, a recovery control method and an ink jet |
September 7, 1999 |
| An ink jet printing apparatus capable of exchangeably mounting a plurality of kinds of recording devices provided with discharging devices for discharging ink. The apparatus includes a recovery operation device for effecting a recovery operation for recovering a discharge condition of a |
| 5877785 |
Ink jet recording method and apparatus using temperature calculation |
March 2, 1999 |
| An ink jet apparatus using an ink jet head having a heat generating element for generating thermal energy to be used to discharge ink, comprises a unit for deriving an amount .increment.Q.sub.i indicative of a heat amount stored in i (i.gtoreq.1) portions of said ink jet head sectioned b |
| 5805180 |
Ink jet recording apparatus which performs suction recovery with a cap and method for same |
September 8, 1998 |
| An ink jet recording apparatus comprising a recording head having discharge ports for discharging the ink, an ink tank for storing said ink to be supplied to the recording head, and suction recovery means for stabilizing the ink discharge from the recording head, characterized in that th |
| 5751310 |
Ink jet recording apparatus capable of preventing blotting at boundary of colors and recording m |
May 12, 1998 |
| In image recording by discharging plural inks of different characteristics onto a recording medium, recording pixels to be recorded by at least one of the inks of either yellow, magenta or cyan color subjected to pixel expansion are expanded in four direction, then a logic product is |
| 5748207 |
Ink jet recording system for preventing blurring at color boundary portion |
May 5, 1998 |
| A recording head having an ejection portion group for ejecting a black ink, and ejection portion groups for ejecting color inks is used. When a black image to be printed by the black ink is present adjacent to a color image to be printed by the color ink, a black image portion adjacent t |
