WO2012023411A1 - Système d'impression et procédé d'impression - Google Patents

Système d'impression et procédé d'impression Download PDF

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Publication number
WO2012023411A1
WO2012023411A1 PCT/JP2011/067445 JP2011067445W WO2012023411A1 WO 2012023411 A1 WO2012023411 A1 WO 2012023411A1 JP 2011067445 W JP2011067445 W JP 2011067445W WO 2012023411 A1 WO2012023411 A1 WO 2012023411A1
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WIPO (PCT)
Prior art keywords
print
recording medium
print head
blocks
printing
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PCT/JP2011/067445
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English (en)
Japanese (ja)
Inventor
節 竹内
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株式会社セイコーアイ・インフォテック
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Publication of WO2012023411A1 publication Critical patent/WO2012023411A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04551—Control methods or devices therefor, e.g. driver circuits, control circuits using several operating modes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04543—Block driving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04586—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads of a type not covered by groups B41J2/04575 - B41J2/04585, or of an undefined type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding

Definitions

  • the present invention relates to a recording apparatus and a recording method for printing by controlling the operation of a print head.
  • the present invention relates to an ink jet recording apparatus and a recording method.
  • high image quality is a major point that affects its performance as well as high printing speed.
  • it is necessary to land droplets ejected from the print head accurately and uniformly on a predetermined position on the paper.
  • Japanese Patent Application Laid-Open No. 2003-226004 discloses a drawing based on a color swath to which a non-uniform print mask function is applied, which lowers the probability of using nozzles corresponding to the peripheral region at the end compared to other nozzles.
  • a technique for making bidirectional color banding inconspicuous by performing an operation is disclosed.
  • the cause of the bi-directional color banding is that the color stacking order differs between the forward pass and the return pass.
  • the first scan (first scan) and the last scan (first scan) drawn on the paper are among them.
  • the contribution rate of the final scan is high.
  • the former is explained by the fact that the ink ejected on the paper for the first time spreads in a short time and forms large dots, and the ink ejected later forms a slightly smaller dot on the spread ink. it can.
  • the influence of the first ejected color in the first scan and the print head color positioned in the front of the carriage traveling direction become strong.
  • FIG. 3A shows a proper image.
  • FIG. 3B is a diagram illustrating an example of bidirectional banding. Striped patterns appear in images with bidirectional banding, and the quality is poor compared to proper images.
  • bi-directional color banding may occur between the left and right edges of the print area.
  • the time difference between the forward path and the backward path is large near the origin in the main scanning direction (direction in which the carriage scans). In other words, it takes time to draw at the beginning of the outbound trip and at the end of the return trip.
  • the time difference drawn from the forward path to the return path is small. This time difference causes a difference in the dry state of the dots on the paper in the immediately preceding scan, so that the nature of the ink ejected thereon naturally changes. In other words, color banding occurs due to the time difference.
  • tiling arranges multiple small prints horizontally to make a large print.
  • color banding at the left and right ends, when tiling, the color difference between the joints of the printed matter becomes conspicuous, and the image quality may be significantly reduced.
  • a non-uniform print mask function is applied to the color swath for dark ink colors (for example, cyan, magenta, and black), and a uniform print mask function is applied to light ink colors (for example, yellow). This makes bidirectional color banding less noticeable.
  • the difference between the non-uniform portion of the print mask function and the uniform portion may appear as color banding. This is because the non-uniform upper and lower areas of the print mask function complement each other and form a conventional dot for one scan. The number will increase. That is, a difference occurs in the time until the image is completed. This difference is exactly the cause of the color banding because it is different between the drawing process for forming dots in one area and the drawing process for forming dots in another area.
  • bi-directional color banding instead of bi-directional printing, uni-directional printing can be used to unify the ink color stacking order and time difference for the entire drawing area. This reduces color banding, but is not practical because the printing speed is reduced by a factor of 1/2 compared to bidirectional printing.
  • image quality defects due to specific vibrations on the carriage travel path are accumulated every scan, which may lead to image quality defects such as vertical stripes and color unevenness.
  • FIGS. 4 (a) and 4 (b) An example of this is shown in FIGS. 4 (a) and 4 (b).
  • FIG. 4A shows an example of boundary banding.
  • FIG. 4B is an example of boundary banding. These appear as streaks with a difference in color density between the upper and lower ends of the color swath and the other portions.
  • it is necessary to adjust the sheet conveyance amount as appropriate. However, it is difficult to keep the conveyance amount constant for a long period of time.
  • Boundary banding can also occur on a specific sheet due to slow drying after ink landing.
  • the ink becomes a wall and the movement of the ink is prevented.
  • the edge at the end of the color swath, that is, the edge, there is a space where nothing exists on one side, so that the ink easily moves.
  • a so-called phenomenon called “mottling” occurs, and as a result, only this edge portion causes a change in hue from other regions. This phenomenon is sometimes called beading.
  • the dot diameter after landing may be small.
  • density unevenness easily occurs due to slight deviation in landing.
  • the density strength often appears as horizontal stripes in the paper feed direction. This is a phenomenon called “hot weather”.
  • An example of this is shown in FIG. FIG. 5 is a diagram showing an example of blurring. This is an example in which density unevenness occurs in a portion where landing deviation occurs and appears as white streaks.
  • a non-uniform print mask function is applied in which the probability of using the nozzle corresponding to the peripheral area of the edge of the color swath drawn in one scan during bidirectional printing is lower than that of other nozzles.
  • the width of the peripheral area substantially matches the width of a positive integer multiple of the transport pitch when transporting the recording medium, so that the color stacking order differs depending on the forward path and the backward path.
  • it is known to be effective for various printing defects such as boundary banding, beading, and blurring.
  • it is extremely effective for various printing defects to have a relationship in which the upper and lower blocks of the color swath drawn in one scan are completely complemented.
  • this technology can be rephrased as a technology that makes the impact of all disturbances less noticeable by slightly deteriorating the dot landing accuracy, that is, by “scattering”. Therefore, as a result of slightly deteriorating the landing accuracy, it is inevitable that the finished printed product will have a graininess and a matte feeling.
  • This can also be explained by an increase in the number of nozzles that are not ejected in one scan, that is, a decrease in the head duty and a decrease in the apparent ejection frequency in order to achieve complete complementation by the upper and lower blocks.
  • a decrease in the discharge frequency means a decrease in the dot volume.
  • a decrease in head duty also means a decrease in the probability of ink being ejected continuously.
  • the probability of the connection of adjacent dots on the paper It can be said that the horizontal line can be drawn without any break.
  • the vertical complement since one horizontal line is divided by a plurality of scans, it can be said that the probability that one line is divided increases. This means that the glossiness is lost in exchange for suppressing selective and intensive printing defects such as white streaks and shading.
  • the present invention has been made in view of such circumstances, and color banding at the time of bidirectional printing in the recording apparatus, boundary banding and beading, white streaks and blurring can be made inconspicuous, It is an object of the present invention to provide a recording apparatus and a recording method that suppress the occurrence of slight graininess and the decrease in glossiness that appear as adverse effects. Further, a recording apparatus and a recording method capable of making white stripes, blurring, etc. inconspicuous in combination with a paper having a small dot diameter and landing by increasing the discharge amount per unit area without reducing the printing speed The purpose is to provide.
  • the recording apparatus of the present invention is a recording apparatus which ejects ink while scanning the same recording area of the recording medium a plurality of times to form an image on the recording medium, and the nozzles of the printing head are recorded on the recording medium.
  • the nozzle group is divided into a plurality of blocks, and at least two of the blocks are in the transport direction of the recording medium with the center of the nozzle row as a boundary Arranged separately on the upstream side and the downstream side in the transport direction, each of the nozzle groups included in the two blocks has a lower printing rate as the nozzle is closer to the end of the print head, and the printing rate is lower than that of the image.
  • the print head discharges the ink to the recording medium based on the print mask, and dots formed on the recording medium by the ink discharged from the nozzle groups included in the different two blocks are formed. It overlaps with a predetermined probability.
  • the recording method of the present invention is a recording method for a recording apparatus that forms an image on the recording medium by ejecting ink while causing the printing head to scan the same recording area of the recording medium a plurality of times.
  • the nozzles are divided into a plurality of nozzle groups for each conveyance amount width of the recording medium, the nozzle groups are divided into a plurality of blocks, and at least two of the blocks are recorded on the boundary of the center of the nozzle row.
  • the nozzle group is arranged separately on the upstream side and the downstream side in the transport direction of the medium, and each of the nozzle groups included in the two blocks has a lower print rate as the nozzle is closer to the end of the print head, and the print rate Is a pre-jet that selectively ejects the ink from the nozzles according to a non-uniform print mask function having a value in which some of the dots on the same line along the scanning direction of the image overlap.
  • the print head discharges the ink to the recording medium based on the print mask, and is formed on the recording medium by the ink discharged from the nozzle groups included in the different two blocks. And a step of performing a drawing operation in which dots overlap each other with a predetermined probability, and a step of transporting the recording medium at a transport pitch having a width of the nozzle group.
  • the present invention in addition to bi-directional banding caused by the difference in color stacking order between the forward path and the return path, printing defects such as boundary banding, beading, and blurring can be suppressed using the “scattering” effect. In addition, it is possible to suppress the occurrence of graininess and the reduction in glossiness, which can be said to be a negative effect of “scattering”. Further, according to the present invention, by increasing the discharge amount per unit area without reducing the printing speed, it is possible to make inconspicuous white streaks and blurring caused particularly in combination with a paper having a small dot diameter.
  • FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.
  • FIG. 2 is a schematic view of the carriage mechanism.
  • FIG. 3A shows a proper image.
  • FIG. 3B is a diagram illustrating an example of bidirectional color banding.
  • FIG. 4A is a diagram illustrating an example of boundary banding.
  • FIG. 4B is a diagram illustrating an example of boundary banding.
  • FIG. 5 is a diagram illustrating an example of smoothness.
  • FIG. 6 is a diagram showing the principle of drawing in a printing mode called 4-pass.
  • FIG. 7 is a diagram showing the principle of drawing in the print mode to which an embodiment of the present invention is applied.
  • FIG. 8 is a diagram illustrating an example of a color swath having a large effect of suppressing boundary banding and beading to which a non-uniform print mask function is applied.
  • FIG. 9 is a diagram illustrating an example of a color swath that applies a non-uniform print mask function, has a large effect of suppressing boundary banding and beading, and has a print rate of 130%.
  • FIG. 10 is a diagram illustrating an example of a color swath that applies a non-uniform print mask function, has a large effect of suppressing boundary banding and beading, and has a print rate of 150%.
  • FIG. 11 is a diagram showing the principle of drawing in the print mode to which a different embodiment of the present invention is applied.
  • FIG. 12 is a diagram illustrating an example of a color swath that emphasizes glossiness.
  • FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
  • the recording apparatus 1 is an ink jet printer.
  • the recording apparatus 1 includes a control unit 20 that controls the operation of the entire apparatus.
  • the control unit 20 includes a CPU 21 of a control unit that controls the overall processing operation in the control unit 20, a ROM 22 of a storage unit in which a program for performing a printing operation and the like are stored in advance, and each control unit is operated during the execution of the printing operation.
  • the RAM 23 serving as a storage unit used as a storage area
  • the EEPROM 24 serving as a storage unit configured by a non-volatile memory that stores setting values and data immediately before the power is turned off
  • the operation panel 44 are equipped with an operation panel.
  • An operation panel control unit 25 that displays information on the display unit
  • a print control unit 26 that is a control unit that controls the printing operation of the recording medium by the print head 41
  • a carriage that is a control unit that controls the operation of the carriage mechanism 42.
  • the control unit 27 controls the operation of the paper transport mechanism 43 composed of grid rollers and the like to transport the paper.
  • the host I / F unit 29 is an interface for inputting / outputting.
  • the print control unit 26 and the carriage control unit 27 control the printing operation based on the position of the carriage read by the linear encoder 45 while coordinating the print positions.
  • FIG. 2 is a schematic view of an example constituting the carriage mechanism.
  • the carriage mechanism 42 is provided with means for detecting the position of the print head 41.
  • a linear encoder 45 incorporating a scale sensor attached to the carriage 420 and a linear scale 421 fixed along the traveling path of the carriage 420 are used.
  • the current position during the reciprocation of the carriage 420 is detected, and information is input to the control unit 20.
  • the control unit 20 recognizes the position of the print head 41 and generates ink ejection timing, thereby increasing the positional accuracy of the droplets that have landed on the paper 422 as a recording medium.
  • four color print heads 41 are mounted in the order of K (black), C (cyan), M (magenta), and Y (yellow) from the left side when viewed from the paper 422 feeding direction, that is, from the head in the forward direction. Yes.
  • ink colors are formed on the paper 422 in this order, and the reverse is the reverse direction.
  • Ink jet printers using these configurations require multiple scans and bi-directional carriage scans in order to suppress the deflection and omission of the nozzles of the print head 41 and periodic unevenness caused by vibration of the drive system.
  • a certain area is drawn. This is generally called a multipath method.
  • the multi-pass method in which an image of a certain region is completed by n scans, the number of dots ejected in one scan is 1 / n with respect to the total dots constituting a certain region.
  • 4-pass that completes an image in 4 scans, a quarter of dots constituting a certain area are ejected for each scan, and the image is completed by conveying the paper 422 each time. I will let you.
  • the conveyance pitch of the paper 422 is approximately 1 ⁇ 4 of the color swath constituted by the total number of nozzles of the print head 41.
  • FIG. 6 shows this state focusing on only a certain print color.
  • the conveyance pitch of the paper 422 is 1 ⁇ 4 of the used nozzle range of the print head 41, and 1 ⁇ 4 constituent dots of the image are ejected by the color swath created in one scan. It can be seen that the image is completed by taking 4 scans for each area.
  • FIG. 1 ⁇ 4 of the used nozzle range of the head was used as the paper conveyance amount, but here, 8 of the used nozzle range is used.
  • the non-uniform area of the print mask function is 1 ⁇ 2 each above and below the used nozzle range of the head. That is, the print head is divided into 8 nozzle groups for each conveyance amount, and the upper and lower blocks are divided into the upper 4 nozzle group and the lower 4 nozzle group.
  • the print mask function shown in FIG. 8 that is, the gradation curve thereof, is S-shaped, the upper block connecting 30% to 70%, and the lower block connecting 70% to 30%.
  • the dots constituting the entire drawing area are complemented by the upper and lower blocks. Since all the dots are in a complementary relationship, a large “scattering” effect can be provided, and various printing defects that have been a problem in the past can be suppressed.
  • the upper end to the lower end indicated by the arrow of the color swath width in FIG. 8 correspond to the nozzle use range of the head, and the line indicating the distribution of the print ratio on the right is the print rate of each nozzle within the nozzle use range of the head. Is shown.
  • the line from the top to the bottom corresponds to the print mask function.
  • the printing rate is uniquely specified for each nozzle and indicates the probability that ink can be ejected in one scan.
  • a print mask is configured in accordance with the print mask function, and ink is selectively ejected from the head by the print mask. If the blocks are divided into upper and lower parts, thereby complementing the respective recording ranges, and the image is completed in 8 scans, the head is divided into 8 equal parts, and 1/4 of the completed image per scan. Will be printed at a predetermined printing rate. If the print mask function is uniform, the printing rate of one scan is 50% in any nozzle of each divided head region.
  • the print mask function is configured so that the sum of the print ratios of nozzles in a complementary relationship becomes 100%. That is, if the printing rate of the nozzles at the upper end of the upper block for creating the color swath in FIG. 8 is 30%, when an image is completed in 8 scans, the image is 1/4 of the completed image.
  • the print mask is configured so that ink can be ejected with a probability of 30%. Then, the printing rate of the nozzle complementary to the nozzle, that is, the nozzle at the end on the upper block side of the lower block is 70%.
  • the print mask function is S-shaped in the range of 30% to 70% so that the sum of the printing ratios of the other nozzles that are complementary to each other is 100%, depending on the position of the nozzle. It forms non-uniform print mask functions with different print rates.
  • the head is divided into an upper block and a lower block.
  • the print mask is configured so that the dots of the image that is completed in 4 scans using the upper block and the dots that are completed in 4 scans using the lower block do not overlap each other, and ink is ejected to areas where no dots are formed. Will be.
  • FIG. 9 shows a print mask function used in an embodiment of the present invention.
  • the print mask function is a non-uniform print mask function in which the printing rate is lower as the nozzle is closer to the end of the print head.
  • the gradation curve is S-shaped, and the upper block connects 45% to 85% and the lower block connects from 85% to 45%. If the gradation curves of the upper and lower blocks are added together, it becomes 130% at any point by simple calculation. That is, as in the case shown in FIG. 8, up to 100% of the added gradation maintains the relationship in which one dot is complemented by the upper and lower blocks, while the upper and lower portions are up and down, up to 130%. Dots are drawn with overlapping blocks.
  • the print mask function shown in FIG. 10 when the gradation curves of the upper and lower blocks are added together, it becomes 150% at any point by simple calculation. That is, in this case, it can be said that high density printing with a printing rate of 150% was performed.
  • the printing rate is about 125% at the maximum. That is, the head is divided into five nozzle groups, and the recording medium is conveyed for each width of the nozzle groups. Then, the image is completed in 5 scans, and in that case, in each 1 scan, the block at one end of the head and the block at the other end are 1/8 of the image to be completed, and the other 3 blocks are 1 of the image to be completed. By performing / 4 printing, printing without overlapping dots can be performed.
  • the print mask according to the non-uniform distribution print mask function in which the dots formed in the block at one end and the block at the other end of the head do not overlap with each other, and the printing rate decreases as the position is closer to the end.
  • dots are formed at positions that are not formed with each other.
  • the printing rate of the block at one end and the block at the other end of the head can be increased.
  • the image is completed. In each scan, the block at one end of the head and the block at the other end are 1/4 of the completed image, and the other 3 blocks are 1/4 of the completed image. Is printed, the dots formed by the block at one end of the head and the block at the other end all overlap.
  • the overlapping amount of dots on the same line forming an image can be controlled by changing the printing rate of the block at one end and the block at the other end of the head.
  • the print ratio of the block at one end of the head and the block at the other end in the range of more than 50% and less than 100%, they are mutually formed by the print mask according to the non-uniform distribution print mask function It is possible to form dots at positions where no dot is formed and further overlap some dots. Strictly speaking, when the print mask function is made non-uniform, the printing rate is less than 125%. If the upper and lower blocks of 1/3 of the used nozzle range complement each other (not shown), the printing rate is about 150% at the maximum.
  • a print mask function for drawing at several print rate values is tabulated, and the user can select an arbitrary value from the print mask function to obtain a print image quality suitable for the user's application. You can choose. For example, this table is called “high density mode”, and weights from 1 to 4 are assigned. Usually, since priority is given to image quality, when printing on transparent paper for use in electrical decoration, Mode 1, which has the greatest “spattering” effect, is 100%. Mode 4 is obtained.
  • mode 2 can be printed with 130% printing ratio. In order to achieve this, it is conceivable that mode 3 in which a printing rate of 150% is obtained is selected. Further, for each paper to be used, the recommended values of the printing ratio may be stored on the printer side as preset values.
  • glossiness is emphasized, the probability of overlapping dots is greatly changed for each line in the sub-scanning direction (paper feeding direction) of printing, so that the probability of hitting twice every other line is increased. It can also be considered. According to this, in a line with a high printing rate appearing every other line, in the main scanning direction (direction in which the carriage scans), the landing dots are promoted to be combined on the medium, and leveling, that is, a smoothing effect is brought about. An improvement in glossiness can be expected.
  • a fine periodic color swath for example, every other dot in the main scanning direction, a fixed amount of dots are placed in the sparse, ie, originally masked portion, that is, the mask is released. You may create a color swath as you do.
  • the fine periodic dot arrangement facilitates dot combination in the main scanning direction, and the probability that dots are combined in the sub-scanning direction is also periodically increased, which makes leveling easier. This can also be expected to improve glossiness.
  • the “scattering” effect is reduced by emphasizing the glossiness, it is preferable to use these color swaths properly depending on the image to be printed.
  • the present invention can be used for an ink jet recording apparatus.

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  • Quality & Reliability (AREA)
  • Ink Jet (AREA)

Abstract

La présente invention porte sur un système d'impression, qui permet une impression à brillant élevé à une concentration élevée tout en réduisant une impression défectueuse, telle qu'un effet de colonnes de couleur. La présente invention rend possible d'utiliser les effets « d'étalement » pour empêcher une impression défectueuse, telle qu'un effet de colonnes bidirectionnel, qui est provoqué par l'impression de couleurs les unes sur les autres dans deux sens chacune dans un ordre différent, un effet de colonnes de limite, un effet de bourrelet, et une impression atténuée pleine. Il est également possible d'empêcher l'apparition d'une légère sensation de granulation et la dégradation de la sensation de brillant, dont on peut dire qu'il s'agit d'effets défavorables de « l'étalement ». De plus, les rayures blanches, ou l'impression atténuée pleine, ou analogue, qui peuvent se produire en particulier dans une combinaison avec des feuilles de papier ayant des diamètres de points réduits, peuvent être rendues imperceptibles par l'accroissement de la quantité de décharge par surface unitaire sans diminuer la vitesse d'impression. Il peut par conséquent être attendu d'obtenir une qualité d'impression élevée avec stabilité.
PCT/JP2011/067445 2010-08-20 2011-07-29 Système d'impression et procédé d'impression WO2012023411A1 (fr)

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JP2010-185358 2010-08-20
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JP2011-159188 2011-07-20
JP2011159188A JP5877666B2 (ja) 2010-08-20 2011-07-20 記録装置及び記録方法

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WO2017086375A1 (fr) * 2015-11-20 2017-05-26 Funai Electric Co., Ltd. Imprimante à jet d'encre et procédé de commande d'imprimante à jet d'encre

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JP6095398B2 (ja) * 2013-02-15 2017-03-15 株式会社Ｏｋｉデータ・インフォテック 記録装置及び記録方法

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JP2006062332A (ja) * 2004-08-30 2006-03-09 Canon Inc インクジェット記録方法およびインクジェット記録システムおよび制御プログラム

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