CN100439103C

CN100439103C - Image reproducing and forming apparatus, printer driver and data processing apparatus

Info

Publication number: CN100439103C
Application number: CNB2004800275259A
Authority: CN
Inventors: 平野政德; 太田善久; 木村隆; 吉田雅一
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2003-08-05
Filing date: 2004-07-30
Publication date: 2008-12-03
Anticipated expiration: 2024-07-30
Also published as: CN1856402A; JP2005053087A

Abstract

An image reproducing and forming apparatus comprises a recording head (14) configured to eject liquid droplets of at least one color and capable of bidirectional recording, and a controller (100) configured to control the amount of. liquid adhering to a recording paper (3) so as to reduce color difference occurring in the bidirectional recording. The controller includes a gamma correction unit (133) configured to selectively perform a controlled gamma correction using a controlled gamma value adjusted so as to reduce the color difference or an ordinary gamma correction using an ordinary gamma value.

Description

Image reproduces and formation device, printer driver and data processing equipment

Technical field

The present invention relates generally to a kind of image and reproduce and form device, printer driver and data processing equipment, more particularly, the present invention relates to a kind of image that can bi-directional printing and reproduce and form device, prevent to produce aberration simultaneously.The image that the present invention also relates to a kind of inkjet type reproduces and the formation device, and it can prevent that the electric charge in the electrostatic attraction paper delivering mechanism from leaking.The present invention also relates to a kind of printer driver, it is used for deal with data, so that prevent to occur aberration and/or electric charge leaks in bidirectional record, and relates to a kind of data processing equipment that is carried on the printer driver.

Background technology

" ink-jet recording apparatus " is that a kind of image of pattern reproduces and the formation device.The example of ink-jet recording apparatus comprises ink-jet printer and facsimile machine or the duplicator that adopts inkjet mechanism to write down.Ink-jet recording apparatus sprays ink droplet or other drops come reproduced image by going up to recording medium (can adhere to any other media on it as paper, OHP sheet material or drop).The advantage of ink-jet recording apparatus is that it can carry out at a high speed, the operation of high-resolution record.Other advantages of ink-jet recording apparatus are that operating cost is relatively low, noise is lower and utilize multiple ink color can easily carry out colour print.

In when beginning, ink-jet recording apparatus develops rapidly aspect using the individual, and this is because its price is cheap, and obtains high quality graphic when using special-purpose paper.It is continuing also to be used as colored tape deck in recent years and later in office, replace the electrofax laser printer and occupy main flow.

In order to allow that ink-jet recording apparatus develops into office and uses, must solve two problems.First problem is applicable to plain paper, and this is the problem of relevant cost.When using special-purpose paper, ink-jet recording apparatus can reproduce the same beautiful high quality printed images with photo.

Special-purpose paper is relatively more expensive usually, and under the situation of the cost management of needs strictness, this just makes office and company be difficult to introduce ink-jet recording apparatus.Usually, the used printed material of office does not need the high image quality the same with photo and picture.Yet another shortcoming of ink-jet recording apparatus is, unless use special-purpose paper, otherwise can not obtain high image quality.

Simultaneously, ink component is improved, and prints so that be fit to and be applicable on plain paper.In fact, carried out many trials, comprised development low permeability dye ink, use printing ink fixing aid and development pigment inks.Because these effort, recently ink-jet printer can be in office reproduced image on the employed plain paper or on the copier paper, its picture quality is identical with the picture quality that laser printer is obtained.

Second problem is writing speed.Usually ink-jet recording apparatus repeats the activation record head simultaneously back and forth by ink droplet jet is write down operation to paper repeatedly.The basic printing technique that Here it is so-called " delegation meets delegation ".Because record head is littler than antiquarian, to compare with the electrophotography of on the basis of " one side connects one side " or " one page connects one page ", carrying out printing, the shortcoming that print on the string type basis is that recording rate is slow.

In order to overcome the defective of recording rate, attempted to improve the efficient of scanning sequency; For example, increase the ink jet cycle to shorten the time-write interval, increase head size, to adopt bedirectional printing to reduce scanning times and actual print scanned those zones (minimal path control) of scan image data only.For the print out task of little or intermediate size, some machines have been realized the print speed also faster than electrophotographic printer.

Together with the above-mentioned effort that is used to improve picture quality and writing speed, ink-jet recording apparatus has become the office products of very attractive.Especially, compare with laser printer, ink-jet recording apparatus has cost advantage, and because it makes compactness, realizes used as desktop printer.

Yet, being different from laser printer or having offset press the mechanism of colored auxiliary agent photographic fixing to the paper surface, ink-jet recording apparatus uses the liquid colour auxiliary agent that can penetrate or penetrate paper when photographic fixing printing ink.Thereby, problem relevant and the restriction ink-jet recording apparatus that invariably accompanies with osmosis process.

The example of this problem and restriction comprises under the influence of paper contained water in printing ink and expanding.When the paper of expansion or one-tenth waveform contacts with printhead, on paper, form defect image owing to secondary printing ink transfer printing afterwards.Viewpoint from the accuracy that improves position of drop ejection need be provided with the distance between printhead and paper as far as possible little.Yet different with the paper of ink-jet special use, the used plain paper of office does not stand anti-expansion process.Thereby if the gap plan of establishment is too strict, level and smooth record operation meeting is obstructed owing to paper expands.

Have time lag between ink droplet lands and begins to expand, it is corresponding through the time of paper with printing ink.Thereby, can avoid occurring secondary printing ink transfer printing problem by increase writing speed, the slight image degradation of coordination, this is because in the image output in office uses, pay the utmost attention to writing speed but not picture quality.

Another problem is that the printing ink that more early adheres on the paper is brighter than the color of ink of landing by the back on same point.This problem is relevant with the printing ink fixing.Allowing printhead from left to right and carry out when mobile from right to left in the bi-directional printing pattern of printing, ink adhesion is going out between journey (from left to right) and the backhaul (from right to left) to change to the order on the paper.For this reason, going out between journey scanning strip and the retrace scanning band aberration may take place.When covering the actual image that will print, band can observe this phenomenon.(being noted that in context term printing, imaging, image reproduce and record all is a synonym).

So far, the aberration problem does not also take positive action to solve, this is because with the transfer printing of secondary printing ink the infringement of printed matter is compared, because of the deteriroation of image quality that aberration produces so not serious, and because this band mainly takes place in the high-speed record pattern, in the high-speed record pattern, pay the utmost attention to writing speed, can accept deteriroation of image quality to a certain degree.

JP11-320926A has disclosed a kind of problem (it is called " aberration in the bidirectional record ") that bidirectional record is operated the aberration that produces that is used for solving.In this open text, record head has two unit, and the color of these two unit is provided with on the contrary.Setover the mutually distance of a resolution ratio pitch of these two unit is provided with imaging in every line, overlapping colored ink in going out journey and backhaul simultaneously.Thereby, still carry out the bidirectional record operation no matter carry out the operation of one way record, can not produce aberration.

JP07-29423B has disclosed another method that is used to revise aberration.Utilize this method, in going out journey, operate, and in backhaul, compensate the point that jumped over every a some executive logging.

Because the technology disclosed in the JP11-320926A adopts two head units, be used to then to safeguard and the subsystem element of restoring record head just becomes doublely that this just causes unwanted cost to increase.Cleaning time also doubles, and printing ink by be used for the cleaning nozzle surface scraper and the possibility of mixing mutually increases.

Utilize the disclosed technology of JP07-29423B, because record (skipping every a point) alternately, the same line is scanned twice, and physical record time and nonreturn recording pattern are basic identical.This just means can not realize high velocity characteristic, and wherein, high velocity characteristic is one of them advantage of bi-directional printing.

Now turn to wood fibre (paper pulp) contained in the paper through moisture or the water component in the printing ink and the problem that expands, the zone that adheres to ink droplet on the paper becomes corrugated.This phenomenon is called cockling.Because it is uneven that cockling, paper surface become, and the distance between the nozzle surface of paper and record head changes according to the position in the paper.When cockling was relatively more serious, paper can contact with nozzle surface under worst case, as mentioned above.In this case, nozzle surface and paper all tarnish, and the picture quality of reproducing is also extremely degenerated.In addition, the printing ink landing position changes, and owing to the cockling effect and from the tram skew, and image can not be rendered on the paper exactly.

In order to overcome this problem, charge-carrying belt is adopted in JP2000-190473A, JP2001-235945A and JP2001-305873A suggestion, to keep paper formation by the electrostatic attraction in the ink-jet recording apparatus (or electro-photography apparatus).The charge-carrying belt rotation is to arrive record position with paper sheet delivery.By utilizing electrostatic attraction to keep paper, can prevent that paper is floating on charge-carrying belt, and it is smooth to keep paper surface.

In JP2000-190473A, image recording structure adopts the conveyer belt that utilizes electrostatic attraction to come conveyance of sheets, and voltage bringing device contacts with conveyer belt.Conveyer belt is charged by voltage bringing device, like this, just forms the distribution of charges pattern of band shape on conveyer belt.In JP2001-235945,, just electric charge is applied to paper or remains on the recording medium on the conveyer belt by charging device.

Yet, if electric charge because some in the paper sheet delivery process is former thereby leak from paper, the electrostatic attraction between paper and the conveyer belt dies down, and the paper sheet delivery state is degenerated.

For overcoming this point, in JP2001-190473A, mobile device is set, with mobile at least a portion power supply, wherein, this power supply is used for voltage is put on electrostatic generator, and the paper that this electrostatic generator is positioned at conveyer belt keeps on the surface.This set helps to prevent that printing ink from flowing in the power supply, and prevents to produce undesired short circuit.

Because in the image reproduction and formation device of inkjet type, ink droplet jet just always might leak because of electric charge takes place the contained wet components of printing ink to recording medium (as paper), wherein, described absorption of inks is in the paper that is kept by the electrostatic attraction band.The degree that electric charge leaks depends on the quantity of ink that adheres on the paper.

Although be suitable for preventing that at the image reproduction/formation device disclosed in the JP2000-190473A electric charge from leaking from conveyer belt, it is not devoted to prevent that the electric charge that takes place because of the printing ink self that is ejected into or is absorbed in the paper from leaking.

Summary of the invention

The present invention proposes in view of the problems referred to above of the prior art, and the objective of the invention is to realize that by the aberration of revising effectively in the bidirectional record operation high speed, high-quality image reproduce, and can not cause cost to raise or speed decline.

Another object of the present invention be prevent by land on recording medium drop and the electric charge that causes leaks, keep stable paper sheet delivery performance simultaneously and be reproduced in high image quality on the recording medium.

In order to obtain these purposes, the quantity of ink that adheres on the recording medium can be effectively controlled, so that prevent to produce the wherein a kind of situation in aberration and the electric charge leakage in bidirectional record when using the electrostatic attraction band.

In one aspect of the invention, image reproduces and forms device and comprises record head and controller, wherein, described record head can spray the drop of at least a color and can carry out bidirectional record, described controller is used for controlling the amount of liquid that adheres on the recording paper, so that the aberration that is reduced in the bidirectional operation to be produced.

Preferably, controller has determining unit, and it determines whether the object that will export is text.To export to as if during text, controller is not carried out the processing that reduces aberration.Replacedly, employed number of color in the definite object that will export of determining unit and the bidirectional record.In this case, not text and number of color when being one at the object that will export, controller is not carried out the processing that reduces aberration.

In preferred exemplary, based on definite result of determining unit, controller is selectively carried out the controllable gray scale correction (gamma correction) that is used to control the liquid adhesion amount, so that reduce aberration, perhaps carries out being not used in the common image rectification of revising aberration.

In preferred exemplary, controller uses the controllable gray scale value, carrying out controlled image rectification, and uses common gray value, proofreaies and correct to carry out normal image.

The controllable gray scale value is the product of common gray value and COEFFICIENT K, and wherein, K is arranged in 0.35 to 0.65 the scope.More preferably, the scope of COEFFICIENT K is between 0.5 to 0.6.

When carrying out double-side operation (duplexing) in bidirectional record, the controllable gray scale value obtains by above-mentioned product being multiply by coefficient M, and wherein, M is less than 1.0.

In another aspect of the present invention, a kind of printer driver is provided, this printer driver is installed in the computer, and be configured to be used for handling to supply to the view data that image reproduces and form device, this image reproduces and forms device and can utilize the record head bidirectional record, and described record head is used for the drop of at least one color is ejected into recording medium.Printer driver comprises control module, and this control module is used for controlling the amount of liquid that adheres on the recording medium, so that reduce the aberration that produces in the bidirectional record.

In preferred exemplary, printer driver determines whether the object that will export is text, wherein, to export to as if during text, control module is not carried out the processing that reduces aberration.Replacedly, printer driver is determined the number of color that adopts in object verbs and the view data, and is not text and number of color when being one at object verbs, and this control module is not carried out and reduced the operation that aberration is handled.

Preferably, printer driver comprises the gray scale amending unit, and it selectively carries out the common gray scale correction that is used to control the controllable gray scale correction of liquid adhesive capacity or is not used in control liquid adhesive capacity based on definite result of determining unit.

Of the present invention aspect another, a data processing equipment that is used for image data processing is provided, wherein, this view data to supply to can service recorder head bidirectional record image reproduce and form device, described record head is ejected into the drop of at least one color on the recording medium.In data processing equipment, above-mentioned printer driver has been installed.

Of the present invention aspect another, provide an image that can prevent that electric charge from leaking to reproduce and form device.Image reproduces and forms device and comprises conveying mechanism, image recording unit and control module, wherein, described conveying mechanism utilizes electrostatic attraction to come conveying recording medium, described image recording unit is by being ejected into drop on the recording medium, thereby on recording medium, form image, described control module is used for controlling the amount of liquid that adheres on the recording medium, leaks from recording medium so that prevent electric charge.

In preferred exemplary, control module comprises gray scale correcting process unit, and it controls the amount of liquid that adheres on the recording medium by the gray scale correction.

For example, gray scale correcting process unit is selectively carried out and is used to prevent first gray scale correction that electric charge leaks and is not used in second the gray scale correction that prevents that electric charge from leaking.

When control liquid adhesive capacity, perhaps when carrying out first gray scale correction, obtain the controllable gray scale value by common gray value being multiply by COEFFICIENT K (K＜1.0).

Can select the value of COEFFICIENT K according to the object verbs of the view data that will write down.Replacedly, the value of COEFFICIENT K can change according to environmental condition, perhaps changes according to the data volume that will output on the page.

When on carry out, printing, adopt by controllable gray scale second controllable gray scale value with coefficient M (M＜1.0) gained on duty.

Description of drawings

After having read following detailed specification in conjunction with the accompanying drawings, other purposes of the present invention, characteristics and advantage will become more obvious, wherein:

Fig. 1 is the explanatory view according to the printing mechanism of the ink-jet recording apparatus of one embodiment of the present of invention;

Fig. 2 A is the plane of the major part of inkjet printing mechanism shown in Figure 1, and Fig. 2 B is the perspective view that is used for the head unit of ink-jet recording apparatus shown in Figure 1;

Fig. 3 illustrates conveyer belt that is used for conveying recording medium used in the ink-jet recording apparatus shown in Figure 1 and the charging roller that is pressed against on the conveyer belt;

Fig. 4 A and Fig. 4 B are the explanatory views that is used to explain the record operation of ink-jet recording apparatus shown in Figure 1;

Fig. 5 is the block diagram of the control module of ink-jet recording apparatus shown in Figure 1, and is connected to according to the printer driver on the device of first embodiment of the present invention;

Fig. 6 is the functional-block diagram that the example that is installed in the printer driver of carrying out the gray scale correction in the data processing equipment is shown;

Fig. 7 illustrates the functional-block diagram of another example that printer driver and image reproduce and form the control module of device, wherein, this printer driver is installed in the data processing equipment, and to carry out the gray scale correction, this image reproduces and forms device and is connected on the data processing equipment;

Fig. 8 is the schematic chart that is used to explain the aberration generation;

Fig. 9 A is the pigment ink droplet to be shown be penetrated into schematic chart on the paper to Fig. 9 C;

Figure 10 A is the pigment ink droplet to be shown be penetrated into schematic chart on the paper to Figure 10 C;

Figure 11 is the example that is formed on the band on the paper because of aberration;

Figure 12 is illustrated in L ^*a ^*b ^*The chart of the aberration of the secondary colour of representing on the chromaticity coordinate;

Figure 13 is the zoomed-in view of the shown circular portion A of the color table of Figure 12;

Figure 14 is the chart of red, green and blue aberration Δ E, and it is the function (%) of sense gray level;

Figure 15 A is the original image of 100% tone, and Figure 15 B is the image after halftone process;

Figure 16 A is the original image of 20% tone, and Figure 16 B is the image after the halftone process;

Figure 17 A is the original image of 60% tone, and Figure 17 B is the image after the halftone process;

Figure 18 illustrates the block diagram that the data in the printer driver flow;

Figure 19 illustrates the chart according to the example of the gray scale correction of first embodiment;

Figure 20 is the chart that another example of gray scale correction is shown;

Figure 21 is the chart that the data processing that is used for the performed different types of different data objects is shown, and the analysis of these data objects;

Figure 22 is the block diagram that reproduces and form the control module of device according to the image of the second embodiment of the present invention;

Figure 23 is the chart according to the example of the gray scale correction of the second embodiment of the present invention;

Figure 24 is the chart that another example of gray scale correction is shown;

Figure 25 is the chart that the data component in ink adhesion amount and the ink adhesion is shown, and its gray scale that is used for process graphical data is more variable than (or COEFFICIENT K);

Figure 26 is the chart that another example of gray scale correction is shown, and it is applicable to graphical analysis shown in Figure 24;

Figure 27 is the chart that another example of gray scale correction is shown;

Figure 28 is the chart that another example of gray scale correction is shown;

Figure 29 is the chart that another example of gray scale correction is shown;

Figure 30 is the block diagram of main frame, wherein, has added the printer driver according to the second embodiment of the present invention.

The specific embodiment

Description narration the preferred embodiments of the present invention.Fig. 1 is the schematic diagram of overall structure (comprising printing mechanism) that ink-jet recording apparatus is shown, and it is an example of reproducing and form device according to the image of one embodiment of the present of invention.Fig. 2 A is the plane of the major part of printing mechanism, and Fig. 2 B is the perspective view that the header structure of ink-jet recording apparatus is shown.Fig. 3 is the schematic chart that conveyer belt is shown according to embodiments of the invention, and described conveyer belt utilizes electrostatic attraction to come conveying recording medium.

Ink-jet recording apparatus 1 comprises image recording unit 2, sheet feed stacker 4 and conveying mechanism 5, wherein, sheet feed stacker 4 places the bottom of ink-jet recording apparatus, and holds paper 3 (as recording medium), and the paper 3 that conveying mechanism 5 is used for supplying with from sheet feed stacker 4 is transported to image recording unit 2.When image was recorded on the paper, paper outputed to output panel 6, and described output panel 6 is connected on the side panel of main body of ink-jet recording apparatus 1.

Ink-jet recording apparatus 1 also comprises double-sided recording modes unit 7, and it is detachably connected on the main body of ink-jet recording apparatus 1.When carrying out the duplex printing operation, image is printed on first (top) of paper 3, and then, paper 3 is carried towards double surface unit 7 by conveying mechanism 5 along backward directions, and paper 3 is inverted at these 7 places, double-sided recording modes unit, so that the back side is towards last.Inverted paper 3 supplies to image recording unit 2 once more, to go up print image overleaf.Two-sided paper 3 is output to output panel 6.

Image recording unit 2 comprises word car 13, and this word car 13 is kept by the axis of

guide

11 and 12, to slide along the axis of guide 11 and 12.Word car 13 is driven on the fast scan direction of sending into direction perpendicular to paper by quick scanning motor (not shown) and moves.Record head 14 is installed on the word car 13.Record head 14 has a plurality of nozzle aperture 14n that are used for liquid droplets, shown in Fig. 2 B.Print cartridge 15 also is removably mounted on the word car 13, so that liquid ink is supplied to record head 14.Print cartridge 15 can be by secondary ink cassette displacement, so that printing ink is supplied to record head 14 from the main ink tank (not shown).

Record head 14 for example has four independently

ink gun

14y, 14m, 14c and 14k, to be respectively applied for the ink droplet that sprays yellow (Y), pinkish red (M), cyan (C) and black (B), shown in Fig. 2 A and 2B.Replacedly, record head 14 can have an ink gun, and this ink gun has a plurality of nozzle arrays of the ink droplet that is used to spray respective color.The structure, ink colors and the number of color that are noted that record head 14 are not limited to these examples.

The ink gun that constitutes record head 14 has power generator, is used to spray the energy of ink droplet with generation.The example of this power generator comprises that piezo-activator, the utilization of adopting piezoelectric element produce the shape memory alloy actuator of metal phase change and the electrostatic actuator of employing electrostatic force because of thermal actuator, the utilization that the film boiling of liquid produces the electrothermal conversioning element (as heating resistor) of phase transformation because of variations in temperature.

Utilize pick-up roller (concavo-convex roller) 21 and separating pad (not shown) to extract out a pile paper of a piece of paper 3 on being stacked in sheet feed stacker 4, and it is supplied to conveying mechanism 5 in the main body of ink-jet recording apparatus 1.

Conveying mechanism 5 comprises carries guider 23, and this guider 23 is provided with spigot surface 23a and spigot surface 23b, and wherein, spigot surface 23a is used to guide paper 3 upwards to supply with from sheet feed stacker 4, and spigot surface 23b is used to guide the paper 3 that transports from double surface unit 7.Conveying mechanism 5 also comprises the paper feed roller 24 that is used to supply with paper 3, be used for paper 3 is pressed against air roll 25 on the paper feed roller 24, is used for the guider 26 of paper 3 guiding paper feed rollers 24, is used for lead the backward guider 27 and being used to of double surface unit 7 of paper 3 is pushed the air roll 28 of the paper of supplying with from paper feed roller 24 3.

Conveying mechanism 5 also can comprise conveyer belt 33, and this conveyer belt 33 is wound on driven roller 31 and the idler roller 32, and with conveyance of sheets 3, a paper of 14 belows 3 of holding the record simultaneously is smooth.Be used for the either side that charging roller 34 and guide roller 35 to conveyer belt 33 charging place conveyer belt 33, therefore, conveyer belt 33 remains between charging roller 34 and the guide roller 35.Although do not have shown in Figure 1ly, a pressing plate and clearer also are set, this pressing plate is used to keep conveyer belt 33, so that towards image recording unit 2, this clearer is made of porous materials, and adheres to printing ink on the conveyer belt 33 with removal.

Conveyer belt 33 is endless belts, and rotates around driven roller 31 and idler roller 32 along the paper supply direction.

Fig. 3 illustrates the topology example of conveyer belt 33.In this example, conveyer belt 33 has ground floor (top layer) 33a and the second layer (bottom) 33b.Ground floor (top layer) 33a is the pure resin film of about 40 μ m by thickness for example, makes as the ETFE virgin material, and this material does not also stand resistance control.The second layer (bottom) 33b is by making with the ground floor identical materials, and experience is utilized the resistance control of carbon.Ground floor (top layer) 33a is as inhaling paper, and the second layer (bottom) 33b is as ground plane (grounding layer) or middle resistant layer.

Charging roller 34 contacts with the top layer 33a of conveyer belt 33, and rotates along with the conveyer belt rotation.High pressure applies pattern with predetermined voltage and puts on charging roller 34 from the high voltage source (not shown).

Turn to Fig. 1, outlet roller 38 is arranged on the downstream of conveying mechanism 5, is discharged to output panel 6 with the paper 3 that will form image.

In image reproduction and formation device shown in Figure 1, rotation conveyer belt 33 rotates along predetermined direction, and is charged by charging roller 34 under the high pressure that is applied, and wherein, this charging roller 34 is pressed against on the conveyer belt 33.By switch (putting upside down) polarity at interval with preset time, the charging pitch of the conveyer belt 33 that employing charging roller 34 can be charged is controlled at (pitch) in the required pitch.

When paper 3 supplied to conveyer belt 33 with high-voltage charging, paper 3 was inner polarized, and produces the electric charge with relative polarity on the interface between conveyer belt 33 and the paper 3.On electric charge on the conveyer belt 33 and the paper 3 induction opposite charges attract each other, and thereby paper 3 static adhere on the conveyer belt 33.Because paper 3 adheres on the conveyer belt 33 securely, the bending of paper 3 or corrugated surface are corrected for the height even curface.

In response to picture element signal, activation record head 14 is done unidirectional or bilateral scanning by mobile word car 13, carries the paper 3 on the rotation conveyer belt 33 simultaneously.Ink droplet 14i sprays towards static paper 3 from record head 14, shown in Fig. 4 A, thereby forms delegation's point Di of image on paper 3.Then, paper 3 is with the preset distance feeding, thus the operation of the record of carries out image next line.When record head 14 receives the work termination signal or detect paper 3 terminal in posting field, finished the record operation of this page.At the some Di that is formed on shown in the enlarged drawing of Fig. 4 B on the paper.The paper 3 that will have been write down image by outlet roller 38 outputs on the output panel 6.

Fig. 5 is the block diagram of the control module 100 of ink-jet recording apparatus (perhaps image reproduction/formation device) 1.Control module 100 comprises CPU 101, ROM 102, RAM 103, nonvolatile memory (NVRAM) 104 and ASIC 105, wherein, described CPU 101 is used to control the whole operation of ink-jet recording apparatus 1, ROM 102 is used to store program and other fixed datas of being carried out by CPU 101, RAM 103 is used for interim storage pixel data, and nonvolatile memory 104 is used for keeping data when power-off.ASIC 105 handles the input and output signal (signal that comprises various types is handled and the data rearrangement row) that is used for carries out image processing, and the whole operation that is used for control device.

Control module 100 also comprises interface (I/F) 106, and it is used for Data transmission between control module 100 and main frame 90, and for example, described main frame 90 is personal computers, and described personal computer is used as according to data processing equipment of the present invention.Control module 100 also comprises head driver 108 that is used for activation record head 14 and a driving governor 107 that is used for control head driver 108.Control module 100 also comprises the slow scanning motor drive unit 113 that is used to drive the quick scanning motor driver element 111 of quick scanning motor 110 and is used to drive slow motor 112.Control module 100 has I/O unit 116, and it is used for receiving various detectable signals from environmental sensor 118 and other sensor (not shown), and this environmental sensor 118 is used for acquisition environment temperature or humidity.

Guidance panel 117 is connected to control module 100.Necessary information is presented on the guidance panel 117, and it allows that the user imports the required input information of operation of ink-jet recording apparatus 1.Be used to apply high pressure and be connected to control module 100 to the high-tension circuit (or power supply) 114 on the charging roller 34, and the polarity of control module 100 control ON/OFF switches and high-tension circuit 114.

Control module 100 receives print data via cable or network from main frame 90 on interface 106, and print data temporarily is stored in the buffer (not shown) of interface 106.Main frame 90 comprises data processing equipment (as personal computer), image recognition device (as image analyzer) and image pick-up device (as digital camera).Produce the print data of the controller 10 that supplies to ink-jet recording apparatus by being stored in printer drivers 91 in the main frame 90, and from printer driver with this data output.

CPU 101 reads print data from the buffer of interface 106, and analyzes this print data.ASIC 105 carries out necessary image processing operations, as the data permutatation, and the pixel data of handling is supplied with driving governor 107 to the end.Printer driver 91 by main frame 90 is carried out the operation that print data is converted to the data bitmap that is used for output image, thereby view data is developed to data bitmap.Replacedly, utilize the font data be stored in the ROM 102, controller that can be by ink-jet recording apparatus 100 converts print data to data bitmap.

Driving governor 107 receives the corresponding one-row pixels data of scan line (dot pattern data) with record head 14, and serial data is outputed to the head driver 108 synchronous with clock signal.Driving governor 107 also regularly outputs to head driver 108 with locking signal (latch signal) predetermined.

Driving governor 107 comprises ROM and driving pulse generative circuit, and wherein, described ROM is used to store the pattern data that is used for driving pulse, and described driving pulse generative circuit is used to produce the driving pulse based on reading from the pattern data of ROM.The pattern data that is used for driving pulse can be stored in ROM102.The driving pulse generative circuit comprises digital analog converter and multiplier, and wherein, the pattern data that this digital analog converter is used for reading from ROM converts analog form to.

Head driver 108 comprises shift register, latch circuit and level shifter, wherein, described shift register is driving governor 107 receive clock signals and serial pixel data from the beginning, the timing of the locking signal that described latch circuit is supplied with at driving governor from the beginning 107 is with register value (register value) locking of shift register, and described level shifter is used for the level of output valve is shifted from latch circuit.Head driver 108 also comprises analog switch array, controls its ON/OFF operation by level shifter.Based on the ON/OFF control of analog switch array, required driving pulse selectively is fed on the actuator of record head 14, to drive this record head.

How Fig. 6 and 7 illustrates the example of image data processing.In Fig. 6, in the printer driver 91 of data processing equipment (perhaps main frame) 90, carry out most of data and handle, carry out data jointly by the controller 100 of printer driver 91 and ink-jet recording apparatus shown in Figure 7 simultaneously and handle.

In the example depicted in fig. 6, printer driver 91 has controller 120, and this controller 120 comprises color management module (CMM) processing unit 131, black generation/undercolour removal (BG/UCR) processing unit 132, gray scale amending unit 133, unit for scaling 134 (zoomingunit) and halftone process unit 135.CMM processing unit 131 receives view data 130 from application software, and the RGB color space conversion that will be used for display becomes to be used for the CMY color space of ink-jet recording apparatus.BG/UCR processing unit 132 is carried out black and is generated and undercolour removal on the CMY aerial image data.Gray scale amending unit 133 comprises the ink adhesion control module that is used to regulate or reduce the quantity of ink that adheres on the paper, and its machine characteristic and user preferences of making it possible to look ink-jet recording apparatus are revised input and output signal.Unit for scaling 134 is carried out amplifieroperation according to the resolution ratio of ink-jet recording apparatus.Halftone process unit 135 comprises polynary/binary matrix (not shown), to be used for that view data is arranged to dot pattern, described dot pattern is reproduced by the ink droplet that ejects from record head.

In the example depicted in fig. 7, printer driver 91 has controller 140, and it comprises color management module (CMM) processing unit 131, black generation/undercolour removal (BG/UCR) processing unit 132 and gray scale amending unit 133.Structure as shown in Figure 6, the RGB color space conversion of the view data 130 that CMM processing unit 131 will be supplied with from application software becomes the CMY color space.BG/UCR processing unit 132 is carried out black and is generated and undercolour removal on the view data in CMY space.Gray scale amending unit 133 comprises the ink adhesion control module, and the machine characteristic and the user preferences that make it possible to look ink-jet recording apparatus are revised input and output signal.

The view data of experience gray scale correction supplies to the controller 100 of ink-jet recording apparatus, and wherein, this controller 100 comprises unit for scaling 134 and halftone process unit 135.View data is handled at unit for scaling 134 experience convergent-divergents, and utilizes the polynary/binary matrix (not shown) in the halftone process unit 135 to develop to dot pattern.

Next, with reference to the aberration that figure 8 to Figure 13 explains in the bidirectional record, this problem can solve by the present invention.

In Fig. 8, record head 14 comprises

head unit

14k, 14c, 14m and the 14y corresponding to black (K), cyan (C), pinkish red (M) and yellow (Y), and is arranged on the fast scan direction in this order.Certainly, record head 14 is not limited to this example, and can adopt different head unit and Geng Duo colors of arranging.

In bi-directional printing (or record), carry out printing in going out in journey and the backhaul of word car, and thereby reduced moving back and forth number of times and being used for writing time of every paper of word car widely.On the other hand, the record position in the backhaul may the position of those from go out journey skew in moving back and forth.In addition, because of producing unwanted aberration in the different order that goes out colour superimposition between journey and the backhaul, this has just reduced the quality of print image.For this reason, in the logging mode of preferred consideration writing speed rather than picture quality, adopt bi-directional printing.

In the example depicted in fig. 8, ink droplet in going out journey according to the sequence-injection of black (K), cyan (C), pinkish red (M) and yellow (Y).In backhaul, ink droplet sprays with reverse order, that is, and and yellow (Y), pinkish red (M), cyan (C) and black (K).Because the colouring agent fixed character, if on the same point of the ink droplet of different colours attached to paper, the color of at first adhering to ink droplet at that point is main color.

Fig. 9 A is when being illustrated in the dyes in different colors China ink and being ejected on the same point on the paper to 9C, the chart of the distribution of colouring agent in paper.The ink droplet of the ink droplet of color A and color B with this sequence-injection to paper 3, shown in Fig. 9 A.The ink droplet of color A at first sprays through paper 3, shown in Fig. 9 B.In this case, if the ink droplet jet of next color B on same point, the ink droplet of color B only see through color A first ink droplet see through intra-zone, shown in Fig. 9 C.In other words, the zone that first ink droplet of color A distributes than second ink droplet of color B distribute regional wide, and so exist the different photographic fixing zone of toner.For example when printing by the secondary colour that combination produced between cyan and magenta (C+M) or magenta and the yellow (M+Y), the color of the ink droplet of Pen Sheing is main color component first.

Figure 10 A is the chart of the distribution of colouring agent in paper when the color dye China ink being shown being ejected into same point on the paper to Figure 10 C.The ink droplet of the ink droplet of color A and color B is ejected on the paper 3 in this order, shown in Figure 10 A.The ink droplet of color A at first sees through paper 3, shown in Figure 10 B.Then, if next the ink droplet jet of color B is on same point, the ink droplet of color B see through fully color A first ink droplet see through the zone, and deeper see through paper 3 inside, shown in Figure 10 C.In this case, the colouring agent of the first ink droplet A is retained on the surf zone of paper 3, and the colouring agent of the second ink droplet B sinks in the paper 3.As a result, the feature that is retained in the colouring agent (first sprays ink droplet A) of near surface becomes stronger, and this colouring agent becomes main color component.

Turn back to Fig. 8, because ink droplet sprays in going out journey according to the order of K → C → M → Y, the leading degree in the synthetic tone becomes K＞C＞M＞Y.On the contrary, ink droplet is according to the sequence-injection of Y → M → C → K in backhaul, and the leading degree in the synthetic tone becomes Y＞M＞C＞K.

When adopting bidirectional record, must consider that the tone in secondary colour or the three primary colors (C+M+Y etc.) sees through the variation that feature takes place because of printing ink with the increase recording rate.When paper was supplied with according to certain distance in each stroke (each goes out journey and backhaul), the variation of tone can cause producing band, as shown in figure 11 especially.

In order to reduce the aberration in the bi-directional printing, in a preferred embodiment of the invention, control or reduced the quantity of ink that adheres on the paper.For example, control the ink adhesion amount, so that reduce the aberration in the bi-directional printing by the gray scale correction.

Aberration in the bi-directional printing increases along with color saturation and is tending towards obvious.Figure 12 is at L at bidirectional record ^*a ^*b ^*The chromaticity diagram drawing change color of the secondary colour that is generally red (R), green (G) and blue (B) that produces in the chromaticity coordinate, and Figure 13 is the enlarged drawing of circular portion A.Along with color saturation increases, this just means that each color increases in the skew that goes out between journey and the backhaul along with position initial point further away from each other.

In Figure 12, near more apart from initial point, color is shallow more, and far away more from initial point, color is strong more.Along with color becomes strongly, the skew that goes out between journey and the backhaul becomes big more.At a ^*Value and b ^*Value reaches certain level, and the form and aspect bit line returns towards initial point, as shown in figure 13.

Usually, use L ^*, a ^*, b ^*The Δ E of value representation represents aberration.Aberration Δ E is by adopting a ^*, b ^*The equation (1) and the L of expression ^*Expression, as shown in figure 12, wherein, described L ^*Be luma component.

ΔE＝[(L ^* ₀-L ^* ₁)2+(a ^* ₀-a ^* ₁)2+(b ^* ₀-b ^* ₁) ²]1/2(1)

Wherein, L ^* ₀, a ^* ₀And b ^* ₀Be the L of reference colours ^*, a ^*And b ^*Value, L ^* ₁, a ^* ₁And b ^* ₁Be the L of comparison colours ^*, a ^*And b ^*Value.

Figure 14 is the chart of red, green and blue aberration Δ E, and it be the function of gray level (%), by utilizing the experimental bidirectional record acquisition of above-mentioned ink-jet recording apparatus.As shown in figure 12, along with tone level (or colour saturation) increases, aberration Δ E increases in three primary colors.

The present inventor is primarily focused on the trend that increases along with tone (colour saturation) rising in aberration, and finds and can reduce the aberration in the bidirectional record by control or reduction output levels (color level).For control or reduction color range, in the gray scale correction, multiply by input value with certain COEFFICIENT K (K＜1.0).

When not carrying out aberration correction (or control), in fact input value is supplied to the gray scale correction chart.On the other hand, when carrying out the aberration correction, the product of input value and COEFFICIENT K is imported into the gray scale correction chart, and the output valve of gray scale chart is used for further processing.

When reducing the ink adhesion amount, can adopt the special extraction processing or the mandatory variation of spot size to reduce color range.Yet these processing can cause the grievous injury to picture quality, the poor information of degenerating, causing because of extraction as the gray balance of document image or produce unique textured pattern.

In contrast, usage factor K controls color range and can keep gray balance in the gray scale correction, and the ink adhesion amount of formation point can increase in tone range or reduce.Also can prevent to produce undesired texture.

Look the action and reaction of acquisition and COEFFICIENT K is arranged to optimum value.Table 1 is the estimated value of aberration Δ E.

Table 1

Kind	Aberration Δ E	Ratio	Step
Kind	Aberration Δ E	Ratio	Step	Can not estimation range	0.0-0.2	Naked eyes can not perception; The error range of the color measuring apparatus of specific condition
Appreciable boundary	0.2-0.4	The reproduction accuracy scope of the color measuring apparatus under the primary condition; The repeatability perception boundary of clear-eyed human eye		Can not estimation range	0.0-0.2
Appreciable boundary	0.2-0.4			The AAA tolerance	0.4-0.8	From observing the viewpoint of judging, the limited standards of chromatic aberration scope of setting	JIS L0804 JIS L0805
The AA tolerance	0.8-1.6	Relatively come the perception aberration by adjacent; The error range that contains the machine difference of general color measuring apparatus	Strick precaution standard: national police agency standard; General shipping inspection standard	The AAA tolerance	0.4-0.8		JIS L0804 JIS L0805
The AA tolerance	0.8-1.6			The A tolerance	1.6-3.2	Perceived hardly in separating relatively; Perception is with a kind of color
The B tolerance	3.2-6.5	Expressing the level conduct with a kind of color treatments; For pigment, be interpreted as false color	The color management tolerance of Heterogeneous Mterials; JIS E3305	The A tolerance	1.6-3.2
The B tolerance	3.2-6.5			The C tolerance	6.5-13	Corresponding to the aberration between the color system (as JIS color system and Munsell color system)	JIS S6016 JIS S6024 JIS S6037
The D tolerance	13-25	Different aberration as the color system name; In addition, be called different colours		The C tolerance	6.5-13		JIS S6016 JIS S6024 JIS S6037

As can be seen from Table 1, aberration Δ E is arranged to be less than or equal to 0.8 (Δ E≤0.8), so that remove aberration fully from bidirectional record.With reference to aberration Δ E shown in Figure 14 and the relation between the gray level (%), gray level must be reduced to theoretical value 20% or lower.Yet in this case, most of original image information will be lost, and picture quality will extremely be degenerated.

If halftone process is carried out on the original image of 100% tone level, shown in Figure 15 A, output image just becomes shown in Figure 15 B.If halftone process is carried out after original image is reduced to 20% in gray level, shown in Figure 16 A, output image can not be thought the image shown in Figure 16 B so.

In order to keep the A tolerance level that table 1 limits, aberration Δ E is set to 1.6 to 3.2, and wherein, the aberration scope does not almost have perceived in isolating contrast (separation comparison).Referring again to the relation between aberration Δ E shown in Figure 14 and the gray level (%), be set to 35% of original image by gray level and obtain gratifying image to 65%.

Test and analyze by considering that deteriroation of image quality and aberration improve, the present inventor finds to be set to 50% to 60% (COEFFICIENT K perhaps is set is 0.5 to 0.6 scope in) by gray level, the aberration in the bidirectional record can be improved and deteriroation of image quality reaches balance between the two.

Figure 17 A is illustrated in the image that forms after 60% the gray-scale Control that gray level is set to original image.When on the controlled image of gray scale, carrying out halftone process, can obtain picture quality, shown in Figure 17 B by the satisfied perception of user.

From before narration as can be seen, used COEFFICIENT K should be arranged in 0.35 to 0.65 scope in the gray scale correction, more preferably, is arranged in 0.5 to 0.6 scope, so that prevent to produce aberration in bidirectional record.Although according to original image slight the variation taken place, above-mentioned scope is the proper range that obtains satisfied picture quality.Utilize this scope of gray level, can expect and the corresponding aberration of the level of the A at least tolerance shown in the table 1 reduces effect, and under can the small aberration influence in bidirectional record, in ink-jet recording apparatus, realize at a high speed, the operation of high-quality record.

In this embodiment, input data values multiply by COEFFICIENT K, improves so that obtain.Yet, as above to state, the influence of picture quality can change according to the content of view data.In Figure 17, on photographic image data, adopt the gray scale correction of COEFFICIENT K at Figure 15.For text data, it is more remarkable that the degeneration of picture quality can become.

This be because with compare in the view data aspect " face ", text data reproduces aspect " OK ".Even text data is accurately reproduced as the halftone process of passing through of anticipation, letter and symbol can be unintelligible because of extracting several points.In addition, when the viewpoint of the aberration from bidirectional record was estimated print text, this aberration was not eye-catching in print text, and it captures as " OK ", and is different with the photographic image that captures as " face ".

This just means, if the input data to as if text, it is desirable to not carry out the control that reduces the ink adhesion amount and handle.The object that has other patterns as figure, comprises the chart or the illustration (figure) that use in the relevant industry of being everlasting.Because graph data " face " expression information, just as picture or photo, it is processed into view data, and picture and photo among this view data and the embodiment are similar.

Figure 18 is the block diagram that the data flow in the printer driver 91 is shown, and wherein, this printer driver 91 is carried out ink adhesion amount control procedure.When " printing " order generates by the application software that goes up operation at data processing equipment 90 (as personal computer), the object determining unit 201 of printer driver 91 is determined the object verbs of input data 200, as text 202, stick figure 203, figure 204 and image (picture) 205.Each object is by corresponding flow process experience relevant treatment.

Text data 202, stick figure data 203 and graph data 204 experience color controls 206.Text data 202 also is subjected to matching colors 207, BG/UCR handles 209, overall control 211, gray scale correction 213 and text deep or light (halftoning) handle 215.Stick figure data 203 and graph data 204 also are subjected to matching colors 208, BG/UCR handles 210, overall control 212, gray scale correction 214 and figure deep or light (halftoning) handle 216.

For view data 205, in determining unit 221, carry out color and determine to determine with expressional scheme.In mode of rule, view data 205 also experiences color control 222, color matching 223, BG/UCR processing 224, overall control 225, gray scale correction 226 and mistake diffusion (halftoning) and handles 227.If the number of color of view data 205 is two or still less, carries out image extracts (imagedecimation) and color controls 232.Then, match colors 233a or not have index and to handle (in order not matching colors) 233b.Comprise two or still less the view data 205 of color is subjected to also that BG/UCR handles 224, overall control 225, gray scale correction 226 and mistake diffusion (halftoning) handle 227.

Stick figure data 203 and graph data 204 can be applied to color of image control module 232 via ROP processing unit 241, rather than are applied to color control module 206.

The view data item of handling at each object is synthesized and is applied to tape deck.

In an embodiment, control or reduce the ink adhesion amount that is used for graph data and view data by gray

scale amending unit

214 and 226, to reduce the aberration in the bidirectional record.On the other hand, for text data, gray scale amending unit 213 is carried out common gray scale correction, and does not reduce the ink adhesion amount.

Figure 19 illustrates the example according to the gray scale correction of being carried out by printer driver 91 of the first embodiment of the present invention.In order to carry out the ink adhesion control that reduces aberration in bidirectional record, the input data supply to COEFFICIENT K multiplier 303.Input data values multiply by COEFFICIENT K, supplies to gray scale correction chart 301 then.On the other hand, if the input data do not need ink adhesion control, the input data directly apply to gray scale correction chart 301.Selector 303 determines whether the input data directly supply to gray scale correction chart 301 or COEFFICIENT K multiplier 302.

The gray scale correction be look the imaging features of tape deck and be used for will the input data grey level transition become the process of different gray level.The input data are the data that are subjected to the gray scale correction, and it can or can not experience necessary processing (handling or the BG/UCR processing as CMM).The output data are to have experienced the data of gray scale correction.

If do not carry out Difference Control in bidirectional record, the input data directly supply to gray scale correction chart 301, and use common gray value that it is carried out the gray scale correction, and the data of common gray scale correction have been accepted in output.On the other hand, for control in bidirectional record or reduce aberration, at COEFFICIENT K multiplier 302, input data values multiply by COEFFICIENT K, and the input data of regulating supply to gray scale correction chart 301, wherein, adopts common gray scale correction value to carry out the gray scale correction.Synthetic output data are conditioned, so that reduce aberration in bidirectional record.This process is equivalent to the gray value (that is to say the controllable gray scale value) that employing multiplied each other by COEFFICIENT K the input data is carried out the gray scale correction, so that reduce aberration in bidirectional record.

COEFFICIENT K is arranged in 0.35 to 0.65 the scope.Because input data values and COEFFICIENT K multiply each other, and compare with those values that directly supply to gray scale correction chart 301, the data value that carry out the gray scale correction reduces at gray scale correction chart 301, and also can reduce the ink adhesion amount that adheres on the paper.

In example shown in Figure 19, single gray scale correction chart 301 be common to Difference Control process and common gray scale makeover process the two, and whether the data value that is input to gray scale correction chart 301 is carried out on the input data according to Difference Control and is regulated.Yet, can adopt two different gray scale charts with different gray values.

Figure 20 illustrates the optimization that is used for reducing at bidirectional record the gray scale correction chart of aberration.The gray scale retouch comprises common gray scale amending unit 401, controllable gray scale amending unit 402, gray value memory cell 403, COEFFICIENT K multiplier 404 and selector 303.Common gray scale amending unit 401 is carried out common gray scale correction on the input data, and need not control the ink adhesion amount, to reduce aberration in bidirectional record.Controllable gray scale amending unit 402 is carried out the controllable gray scale correction, regulates the ink adhesion amount, so that reduce the aberration in the bidirectional record.Gray value memory cell 403 is stored in the gray value (it is called " common gray value ") that uses in the common gray scale correction.Common gray value and COEFFICIENT K that COEFFICIENT K multiplier 404 will be stored in the gray value memory cell 403 multiply each other, and the controllable gray scale value is applied to controllable gray scale value amending unit 402.Selector 303 will be imported data and be applied to common gray scale amending unit 401 or controllable gray scale amending unit 402.

Therefore selector 303 is installed in the printer driver 91, and the user can regulate the installation of selector 303.For example, if the reduction of gray level is more serious than aberration, the user can be provided with selector 303 so, so that do not select the controllable gray scale correction.

If the pattern that is provided with or the pattern that is provided with automatically of suggestion are carried in the printer driver 91, selector can be configured to be used for select to determine whether to exist " Difference Control in the bidirectional record " in the operation at it, wherein, the pattern that is provided with of described suggestion is used for realizing that by the determined optimum picture quality of producer the described pattern that is provided with automatically is used for by analysis of image data by determined best installation of printer driver.

If adopt monochrome ink (black or other colors), can aberration not take place in principle because of bidirectional record.In this case, can automatically be provided for the pattern of " in bidirectional record, not carrying out Difference Control ".

If the determined object verbs of object verbs determining unit is a text, so just carries out common gray scale correction, and do not need in bidirectional record, to carry out Difference Control.Similarly, if used ink colors number is one in the record, so just carries out common gray scale correction, and do not need in bidirectional record, to reduce aberration.

Figure 21 illustrates the data processing of the different types that data object carried out of different types and the synthetic chart of image of these data objects.In Figure 21, adopt by the multiply each other controllable gray scale value of gained of common gray value and COEFFICIENT K and carry out the figure halftone process that is used for figure, and adopt common gray value to carry out the text halftone process of color text data (except black).For monochromatic (or black) text, only carry out sawtooth correction (jaggy correction) (that is, anti-sawtooth is handled).Then, figure, color text and monochrome (black) text are synthesized, with reproduced image.

So that in bidirectional record, reduce aberration,, can keep picture quality by control ink adhesion amount, prevent to produce aberration simultaneously in the bi-directional printing pattern that is used for increasing recording rate.In other words, can realize high speed, high-quality record, thereby between picture quality and recording rate, obtain balance.

To export to as if during text, carry out common gray scale correction, and need not multiply by COEFFICIENT K, the deteriroation of image quality that prevents text thus is to undesired level.Similarly, when the object that will export is not text, and when using monochrome ink, carries out common gray scale correction once more, and need not reduce the ink adhesion amount, this is because can not produce aberration in bidirectional record in principle in the operation of monochrome record.

Control the ink adhesion amount by the gray scale correction of adopting the controllable gray scale value, can regulate gray level, keep gray balance simultaneously.Counting increases in the scope of gray scale performance (gradation representation) or reduces, and prevents undesired texture simultaneously.

By common gray value being multiply by COEFFICIENT K (K＜1), can obtain the controllable gray scale value, wherein, this controllable gray scale value is used for reducing at bidirectional record the controllable gray scale correction of aberration.By COEFFICIENT K being arranged in 0.35 to 0.65 the scope, can reduce the aberration in the bidirectional record effectively, prevent that simultaneously picture quality from degenerating because of gray level descends.Especially, by the K value is arranged between 0.5 to 0.6, eliminated the aberration in the bidirectional record basically, the negative effect that the grey level is descended is reduced to minimum of a value simultaneously, and can reproduce gratifying high-quality document image.

Total ink consumption of colored ink is arranged to be substantially equal to the ink consumption of black ink.This set has prolonged the replacement cycle of colour ink box, and has reduced cost.In office, main output contains the so-called official document (business document) of text and figure.Utilize the ink-jet recording apparatus among this embodiment, when printing curve (as chart) and picture (as photo), can reduce ink consumption, while print text part, and can not reduce picture quality.

Usually, text printing becomes black, and figure and picture are printed with colored ink.Utilize the present invention, because therefore the ink consumption of black ink, needn't always change colour ink box (these are different with conventional art) basically for total ink consumption of colored ink (C+M+Y).

Some known devices are equipped with the printing ink save mode, and change the image processing of each object.The ink-jet recording apparatus of this embodiment does not require this printing ink save mode, still as the seondary effect of the Difference Control in the bidirectional record, can reduce ink consumption.

The first embodiment of the present invention not only can be used for ink-jet recording apparatus, and can be used for printer, facsimile machine, duplicator and utilize printing ink to come the multi-purpose machine of the printing/fax/duplicating of reproduced image.The first embodiment of the present invention also can be applicable to adopt image reproduction/formation device, the data processing equipment of other liquid in addition to the ink and is carried in printer driver in the data processing equipment.

In the above-described embodiments, carry out the gray scale correction and the controllable gray scale correction of the aberration that is used for reducing bidirectional record by being installed in printer driver in the main frame.Yet gray scale correction and controllable gray scale correction can be carried out by ink recorder.In this case, as shown in Figure 7 gray scale correcting process 133 is joined in the controller 100 of ink-jet recording apparatus.Replacedly, can in ink-jet recording apparatus, carry out as shown in figure 18 entire stream.

Figure 22 is the block diagram of the controller 500 of the ink-jet recording apparatus (as an example of image reproduction/formation device) according to the second embodiment of the present invention.In a second embodiment, control ink adhesion amount is so that reduce the electric charge leakage and carry out duplex printing satisfactorily.So ink-jet recording apparatus needs not to be the bidirectional record device.

Be similar to first embodiment, record head 14 drives in response to picture element signal, carries the paper on the rotation conveyer belt 33 simultaneously.More precisely, shown in Fig. 2 A, by ink droplet jet is write down delegation's image to paper, wherein, described paper is by the static assigned position place that remains on of conveyer belt.Then, paper 3 is sent into predetermined distance, to carry out the operation of next line image record.Receive the end-of-job signal or when posting field detects paper 3 terminal, finished the record operation of this one page at record head 14.

Return Figure 22, control module 500 comprises CPU 101, ROM 102, RAM 103, nonvolatile memory (NVRAM) 104 and ASIC 520, wherein, described CPU is used to control the whole operation of ink-jet recording apparatus 1, ROM 102 is used to store performed program and other fixed datas by CPU 101, RAM is used for interim storage pixel data, and described nonvolatile memory 104 is used for keeping data when powered-down.ASIC 520 carries out various types of signals and handles, and comprises gray scale (γ) correction, and it is used for regulating the quantity of ink that adheres on the recording medium according to gray scale correcting process of the present invention unit 119.ASIC 520 carries out image processing, the permutatation of handling print data, the signal processing of I/O control signal etc.

Control module 100 also comprises interface (I/F) 106, be used for the head driver 108 of activation record head and be used for the driving governor 107 of control head driver 108, wherein, described interface (I/F) 106 be used to carry out and the main frame (not shown) between exchanges data.Control module 100 also comprises the slow scanning motor drive unit 113 that is used to drive the quick scanning motor driver element 111 of quick scanning motor 110 and is used to drive slow scanning motor 112.Control module 100 has I/O unit 116, and it is used for receiving various detectable signals from environmental sensor 118 and other sensor (not shown), and this environmental sensor 118 is used for acquisition environment temperature or humidity.

Guidance panel 117 is connected to control module 100.Necessary information is presented on the guidance panel 117, and it allows the input information that user's input operation ink-jet recording apparatus 1 is required.Be used to apply high pressure and be connected to control module 100 to the high-tension circuit (or power supply) 114 on the charging roller 34, and the polarity of control module 100 control ON/OFF switches and high-tension circuit 114.

Control module 100 receives print data via cable or network from external device (ED) on interface 106, and print data temporarily is stored in the buffer (not shown) of interface 106.Described external device (ED) comprises data processing equipment (as personal computer), image recognition device (as image analyzer) and image pick-up device (as digital camera).

CPU 101 reads print data from the buffer of interface 106, and analyzes this print data.ASIC 520 (comprising gray scale correcting process unit 530) carries out necessary image processing operations, handles and the gray scale correction as CCM processing, BG/UCR.Then, ASIC 520 rearranges the print data (pixel data) of processing, and supplies driving governor 107 to the end with pixel data.Utilization is stored in the font data in the ROM102, print data can be converted to the data bitmap that is used for output image.

Replacedly, view data can develop to data bitmap by the printer driver of main frame, and data bitmap can outside be fed to the control module 100 of ink-jet recording apparatus 1.

Driving governor 107 receives the corresponding pixel data of scan line (dot pattern data) with record head 14, and serial data and clock signal are synchronously outputed to head driver 108.Driving governor 107 also regularly outputs to head driver 108 with locking signal (latch signal) predetermined.

Head driver 108 comprises shift register, latch circuit and level shifter, wherein, described shift register is driving governor 107 receive clock signals and serial picture element signal from the beginning, described latch circuit regularly locks the register value (register value) of shift register in the locking signal of from the beginning driving governor 107 supplies, and described level shifter is used for the level of output valve is shifted from latch circuit.Head driver 108 also comprises analog switch array, controls its ON/OFF operation by level shifter.Based on the ON/OFF control of analog switch array, required driving pulse selectively is fed on the actuator of record head 14, to drive this record head.

Figure 23 is the schematic block diagram according to the gray scale correcting process unit 530 of one embodiment of the present of invention.Gray scale correcting process unit 530 comprises common gray scale amending unit 501 and controlled (or preventing to leak) gray scale amending unit 502, wherein, described common gray scale amending unit 501 structures are used for carrying out common gray scale correction, do not leak and do not consider to prevent to take place on paper or the recording medium electric charge, controllable gray scale amending unit 502 structures are used for carrying out the gray scale correction, to be used to reduce the drop amount that adheres on the paper, leak thereby prevent to take place on the paper electric charge.The common gray value that adopts in the common gray scale correction of gray value memory cell 503 storages.COEFFICIENT K multiplier 504 multiplies each other common gray value and COEFFICIENT K (K＜1), and income value (controllable gray scale value) is exported to controllable gray scale amending unit 502.First gray scale correction data of the common gray scale amending unit 501 of selector 505 selections or the second gray scale correction data of controllable gray scale amending unit 502 are as the output data.

In context, the gray scale correction is the process that is used for the gray scale level of input data is converted to another gray scale level, has wherein considered the factor of the image pickup feature of ink-jet recording apparatus.The input data are the data that are not subjected to the gray scale correction, and its data that may or not experience other patterns handle, and handle or BG/UCR handles as CCM.The output data of gray scale correcting process unit 530 are to have experienced the data of gray scale correction.

In a second embodiment, controllable gray scale amending unit 502 adopts the controllable gray scale value that the input data are carried out the gray scale correction, leak from paper and electrostatic delivery band so that prevent electric charge, wherein, described controllable gray scale value is by acquisition that common gray value and COEFFICIENT K (K＜1) are multiplied each other.The used controllable gray scale value of controllable gray scale amending unit 502 is usually less than common gray value, and therefore reduced the quantity of ink that adheres on the paper.

Adhere to printing ink (liquid) amount on the paper by reduction, can prevent that the electric charge that the excessive water content because of paper causes from leaking.Thereby the electrostatic attraction between paper and the conveyer belt 33 is suitably kept, and paper is carried with stationary mode.In addition, the landing position of ink droplet is also kept higher accuracy, and has improved picture quality.

Thereby,, always there is the possibility of electric charge leakage owing to adhere to the moisture of the ink droplet on the paper being ejected into by drop on the paper when on the paper that keeps by electrostatic attraction, forming image with ink droplet or other patterns.Even equipped the drying device that is used to promote the evaporation of moisture component, can not recover the electric charge that in record (printing) operating process, has lost.Thereby, more advantageously be to reduce the quantity of ink that adheres to.This set can preferably be applied in the prior art, disclosed in JP2001-235945A and JP2000-190473A, equipped to be used for supplies charges and to give the device (JP2001-234945A) of paper or do not equip this device (JP2000-190473A) no matter be.

Even because of using the controllable gray scale value to reduce image density a little, but print quality is not subjected to adversely influencing, this is because kept the overall balance of colour brightness, wherein, described controllable gray scale value by common gray value with multiply each other less than 1.0 COEFFICIENT K, described colour brightness is to the influence of the visual characteristic influence greater than image density.

Although in example shown in Figure 23, selecting pixel data by selector 505 is in the common gray scale correction of common gray scale amending unit 501 experience, still in the 502 experience controllable gray scale corrections of controllable gray scale amending unit, the input data selectively are fed to common gray scale amending unit 501 or controllable gray scale amending unit 502.

Select by allowing between common gray scale correction and controllable gray scale correction, carry out the gray scale correction in a suitable manner according to paper pattern and/or material.For example, when adopting ground paper or the paper of face coat arranged, preferential with picture quality, adopt common gray value to carry out common gray scale correction with original density, this is to arrive the back side because this paper prevents the moisture component of printing ink, and the electric charge leakage can not take place.On the other hand, when employing is easy to cause the common paper of electric charge leakage, select to adopt the controllable gray scale correction of controllable gray scale value, to prevent that in advance picture quality from leaking because of electric charge and the electrostatic attraction reduction is degenerated.

Figure 24 illustrates another example according to the gray scale correcting process unit 530 of second embodiment.In this example, data pattern determining unit 506 is set, to determine the pattern of input data.According to data pattern, carry out more suitable in common gray scale correction and the controllable gray scale correction one.

In particular example shown in Figure 24, data pattern determining unit 506 is determined input data whether text data or graph data, simultaneously graph data is fed to controllable gray scale amending unit 502.

In addition, image synthesizer 507 is set, with the output data (these output data have been subjected to common gray scale correction) of synthetic common gray scale amending unit 501 outputs and the output data (these output data have been subjected to the controllable gray scale correction) of controllable gray scale amending unit 502 outputs.

Although in this example, graph data always offers controllable gray scale amending unit 502, gray scale correcting process unit 530 can be constructed like this, promptly, according to for example paper pattern, graph data is carried out common gray scale correction or controllable gray scale correction selectively, as 4 described with reference to the accompanying drawings in first example.In addition, the value of COEFFICIENT K can change according to data pattern.

With invariant K (K＜1.0) when multiply by common gray value, the pattern density of print data reduces a little, and this is because the quantity of ink that adheres on the paper reduces based on the controllable gray scale value.The influence that image density reduces is according to data object and difference.For example, image density descends dangerous more when the print text data, this is that and so not big to the effect that prevents to leak, this is because be used for the quantity of ink smaller (staying more nonprinting region on paper) of print data text itself because picture quality or definition are easier to degenerate.On the other hand, when the printing curve data, as long as keep luminance balance, visual characteristic is not just degenerated very much.Bigger to the effect that prevents to leak, this is that the nonprinting region on the paper seldom because the ink consumption during printing curve is bigger.

Thereby, come the print data object is divided into groups according to pattern such as text data and graph data project, wherein, the value of information of text data project is easy to degenerate along with the reduction of density, and the graph data project allows that density is reduced to a certain degree.Adopt different gray values, that is to say, adopt common gray value and controllable gray scale value to carry out the gray scale correction, wherein, described controllable gray scale value obtains by multiply by common gray value with COEFFICIENT K.Self can change the value of COEFFICIENT K, to produce controllable gray scale.

Do not reducing under the situation that adheres to the quantity of ink on the paper, print the data items (as text data) of precedence requirement picture quality, adhere in reduction under the situation of the quantity of ink on the paper, printing can be accepted color density and be reduced to a certain degree data items, prevent that electric charge from leaking, and keeps the picture quality balance.

Usually, adopt monochrome ink (being generally black ink) print text data, and adopt cyan, magenta, yellow and black ink printing curve data simultaneously.By between common gray scale correction and controllable gray scale correction, switching the gray scale modification model according to object verbs, can utilize less ink consumption to obtain gratifying output image, keep picture quality simultaneously, and reduce operating cost.

Explain the visualization mode example of this example with reference to Figure 21 and Figure 25.In Figure 21, as first embodiment, the figure halftone process of utilizing the controllable gray scale value to carry out to be used for graph data, the text halftone process of utilizing common gray value to carry out to be used for the color text data, wherein, described controllable gray scale value obtains by multiply by common (original) gray value with COEFFICIENT K.For monochromatic (or black) text, only carry out sawtooth correction (that is, anti-sawtooth is handled).Then, figure, color text and monochrome (black) text is synthesized, with reproduced image.

Figure 25 is illustrated in to change to be used under the situation of gray scale than (COEFFICIENT K) of process graphical data the chart that the data in ink adhesion amount and the ink adhesion are formed.Along with gray value (or COEFFICIENT K) descends, the ink adhesion amount of graph data reduces.

Figure 26 illustrates the improvement of the gray scale correcting process unit of second example, and it is applicable to visualization mode shown in Figure 21.Data pattern determining unit 506 for example at figure, determine, determine the text pattern among color text and monochrome (black) text.The color text data are supplied to common gray scale amending unit 501, and utilize the common gray value that is stored in the gray value memory cell 503 that it is carried out common gray scale correction.Graph data offers controllable gray scale amending unit 502, and utilizes the controllable gray scale value of being supplied from COEFFICIENT K multiplier 504 to carry out the controllable gray scale correction.Monochromatic (black) text data is supplied to sawtooth amending unit 509.The data items that has been subjected to relevant treatment is synthesized by image synthesizer 507.

Figure 27 illustrates another example according to the gray scale correcting process unit 530 of the second embodiment of the present invention.In the 3rd example, COEFFICIENT K amending unit 510 is set, with based on the value of coming the used COEFFICIENT K of adjustment factor K multiplier 504 by the detected environmental condition of environmental sensor 118 (Fig. 5).This set can be applicable in second example shown in Figure 24 and the optimization shown in Figure 26.

The leakage of paper electric charge is easy to change according to environmental condition.Usually, when humidity was higher, the moisture that electric charge is easy to absorb because of paper leaked.On the other hand, when humidity is low, is not easy to take place electric charge and leaks.

In view of this environmental change, optimize the value of (or correction) COEFFICIENT K according to environmental condition.For example, when humidity was higher, COEFFICIENT K was provided with lessly, adhered to quantity of ink on the paper with reduction, prevented that thus electric charge from leaking and keeping the electrostatic attraction between paper 3 and the conveyer belt 33.On the other hand, when humidity is low, be provided with the value of COEFFICIENT K to such an extent that approach 1.0, keep high image quality thus.

Selector 505 is selectively exported the data items that has been subjected to the data items of controllable gray scale correction or has been subjected to common gray scale correction, wherein, adopt the controllable gray scale value to carry out the controllable gray scale correction, described controllable gray scale value obtains by multiply by correction factor K.

Figure 28 illustrates another example according to the gray scale correcting process unit of the second embodiment of the present invention.In this example, gray scale correcting process unit 530 is provided with data volume determining unit 511 and COEFFICIENT K amending unit 512, wherein, this data volume determining unit 511 determines to output to the data output quantity of the page, and described COEFFICIENT K amending unit 512 comes the used values of factor K of adjustment factor K multiplier 504 in response to definite result of data volume determining unit 511.

In the total amount of the data output that is used for the page hour, the electric charge that causes because of ink adhesion leaks and does not influence electrostatic attraction or synthetic print image widely.For example, only when the paper corner is printed, ink adhesion amount self is less at image, and thereby electric charge leak not serious.

In light of this situation, be identified for the data output quantity of the page, to come adjustment factor K value according to data volume.In the data volume that is used for the page hour, COEFFICIENT K is provided with to such an extent that approach 1.0 (like this, the controllable gray scale value just approaches common gray value), to improve picture quality.This set is allowed with preventing that electric charge from leaking the balance print image quality.

Figure 29 illustrates another example according to the gray scale correcting process unit of the second embodiment of the present invention.In this example, COEFFICIENT K multiplier 514 is set to gray scale correcting process unit 530, to produce the controllable gray scale value.In this case, when carrying out duplex printing, the common gray value that multiplies each other with COEFFICIENT K also can multiply by coefficient M (M＜1.0) again.When carrying out the single face print job, coefficient M multiplier 514 will in statu quo pass to controllable gray scale amending unit 502 from the controllable gray scale value of COEFFICIENT K multiplier 504 outputs, and not carry out the multiply operation with coefficient M.

In duplex printing, the ink adhesion amount doubles, and multiply by COEFFICIENT K and is not enough to prevent that electric charge from leaking.Thereby, multiply by the controllable gray scale value with another coefficient M (M＜1.0), adhere to total ink on the paper two sides with further reduction.Prevent all that on each face of paper electric charge from leaking, and suitably keep the electrostatic attraction between paper and the conveyer belt.

In this example, common gray value is used for common gray scale modification model.The first controllable gray scale value that multiplies each other with COEFFICIENT K is used for the single face of controllable gray scale modification model and prints.The second controllable gray scale correction value that multiplies each other with COEFFICIENT K and coefficient M is used for the duplex printing of controllable gray scale modification model.

In ink-jet recording apparatus, gray scale modification model and corresponding gray value are provided with as follows in this example.

Common gray scale modification model: γ

Controllable gray scale correction (single face printing): γ * K

Controllable gray scale correction (duplex printing): γ * K * M.

The preferable range of coefficient M is between 0.8 to 0.95, to avoid occurring the problem in the duplex printing.Regulate product K * M, so that obtain to prevent the optimum effect of the electric charge leakage in the duplex printing.

Although first to the 5th example of gray scale correction has adopted the mode that is applied to ink recorder to narrate, the present invention can be used for other image reproduction/formation devices, as printer, facsimile machine, duplicator or multi-functional imaging device (as printer, facsimile machine or duplicator), this device is equipped with the paper delivering mechanism that adopts electrostatic attraction.In addition, the present invention can be used for image reproduction/formation device, and this device adopts other fluent materials reproduced image on recording medium except that printing ink.

In the above-mentioned example of second embodiment, in image reproduction/formation device, carry out the gray scale correction that is used to prevent the electric charge leakage; Yet, can carry out gray scale correction (referring to Fig. 5) by the printer driver 91 that is installed in the external host 90.

Figure 30 is the enlarged drawing according to the main frame that printer driver 610 is installed of the second embodiment of the present invention.In this embodiment, image reproduction/formation device needn't have the function that generates dot pattern, wherein, this dot pattern based on the print command that is used to print picture or text and physical record at paper.For example, the printer driver 610 of main frame produces dot pattern and dot pattern is transferred to ink-jet recording apparatus.

In Figure 30, the application software of being carried out by main frame 602 is fed to print command (or record order) printer driver 610 that is installed in the main frame.Printer driver 610 is handled print command, and generates print data, and it is realized by the specified dot pattern data of print command.Dot pattern data is transmitted to image recording structure (or image reproduction/formation device).

Operating system or the application software 602 performed by the CPU601 of main frame produce the print command that is used to draw picture or text.Print command is recorded and narrated by special printing language, and it comprises position, thickness and length about the line that will write down, perhaps about position, font and the size of the text that will write down.Print command temporarily is stored in the cartographic data memory 603, and by rasterizer 604 deciphers.Rasterizer 604 converts print command to the dot pattern of wanting physical record based on the decipher content.For example, the print command that is used for call wire according to the rules position, thickness and length and convert dot pattern data to.The text profile information that be used for the print command position according to the rules of recording text and size, adopts and convert dot pattern data to, wherein, the character contour data 608 of described text profile information from be stored in main frame are extracted.These dot pattern data are stored in the raster data memory 605.

When generating dot pattern data, printer driver 310 is carried out at first, second in gray scale correcting process unit 607, the gray scale correction described in the 4th or the 5th example.Saved here about the explanation by the performed gray scale correction in gray scale correcting process unit 607, this is because it is described in above-mentioned example.

The dot pattern data that is stored in the raster data memory 605 is transmitted to ink-jet recording apparatus or image reproduction/formation device as pixel data (or print data) via interface 606.

By carrying out the gray scale correction in the printer driver of main frame externally, can reduce the operating load of image reproduction/formation device.

Although narrated the present invention based on preferred embodiment,, the invention is not restricted to these embodiment.For example, the coefficient M that is provided for duplex printing can make up with COEFFICIENT K, to prevent in the bidirectional record described in first embodiment aberration taking place.In this case, the preferable range of coefficient M is between 0.8 to 0.95.Yet because gray value is regulated by COEFFICIENT K, to reduce the ink adhesion amount in order to reduce aberration, when bi-directional printing pattern and duplex printing pattern were set at the same time, the coefficient M that is used for duplex printing can be replaced by COEFFICIENT K.In this case, regulate the COEFFICIENT K that is used to reduce aberration a little, so that reflection coefficient M.

To those skilled in the art, apparent, under the situation that does not depart from scope of the present invention, there are many other alternative and optimizations, wherein, scope of the present invention is limited by appended claims.

Claims

1. an image reproduces and the formation device, has: record head, and it has a plurality of nozzle arrays, is used for spraying the drop of at least a color; Perhaps have a plurality of record heads, be used for spraying the drop of at least a color; Described record head can bidirectional record; And

Controller, it is used for preventing in the pattern at aberration, prevents that with not carrying out aberration the situation of step from comparing, and reduces the amount of liquid that adheres to every kind of color on the recording paper with constant ratio;

To export to as if during text, be not text and number of color when being one perhaps at the object that will export, described controller is not carried out and is reduced the processing that adheres to the amount of liquid on the recording paper.

2. image as claimed in claim 1 reproduces and forms device, and wherein, described controller is controlled the liquid adhesive capacity by the controllable gray scale correction of adopting the controllable gray scale value to be carried out, so that reduce aberration.

3. image as claimed in claim 2 reproduces and the formation device, wherein, described controller is provided with selector, and the common gray scale correction that this selector is used for selecting to adopt common gray value to carry out still adopts the controllable gray scale value to be used to reduce the controllable gray scale correction of aberration.

4. image as claimed in claim 3 reproduces and forms device, and wherein, described controllable gray scale value is the product of common gray value and COEFFICIENT K, and wherein, COEFFICIENT K is arranged between 0.35 to 0.65.

5. image as claimed in claim 1 reproduces and the formation device, wherein, described controller is configured to select controllable gray scale correction or common gray scale correction based on the result of determining unit, wherein, described controllable gray scale correction is used to control the liquid adhesive capacity, to reduce aberration in bidirectional record, described common gray scale correction is not used in the reduction aberration.

6. image as claimed in claim 5 reproduces and forms device, and wherein, described controller uses the controllable gray scale value, with the correction of execution controllable gray scale, and uses common gray value, to carry out common gray scale correction.

7. image as claimed in claim 6 reproduces and forms device, and wherein, described controllable gray scale value is the product of common gray value and COEFFICIENT K, and wherein, COEFFICIENT K is arranged between 0.35 to 0.65.

8. image as claimed in claim 1 reproduces and forms device, and wherein, when carrying out duplex printing in bidirectional record, controller also usage factor M is controlled the liquid adhesive capacity that adheres on the recording paper, and wherein, M is less than 1.0.

9. printer driver, its structure is used for handling and will supplies to the view data that image reproduces and form device, wherein, this image reproduces and forms device and can utilize the record head that has a plurality of nozzle arrays or utilize a plurality of record heads to carry out bidirectional record, this record head can spray the drop of at least a color to recording medium, and this printer driver comprises:

Control module, it prevents in the pattern at aberration when bidirectional record, prevents that with not carrying out aberration the situation of step from comparing, and reduces the amount of liquid that adheres to every kind of color on the recording medium with constant ratio;

To export to as if during text, be not text and number of color when being one perhaps at the object that will export, described control module is not carried out and is reduced the processing that adheres to the amount of liquid on the recording medium.

10. printer driver as claimed in claim 9, wherein, control module comprises the gray scale amending unit, it is used for selectively carrying out the controllable gray scale correction and adopts the common gray scale correction that common gray value carried out, wherein, the controllable gray scale value is adopted in described controllable gray scale correction, so that reduce aberration.

11. printer driver as claimed in claim 10, wherein, described controllable gray scale value is the product of common gray value and COEFFICIENT K, and wherein, COEFFICIENT K is arranged between 0.35 to 0.65.

12. printer driver as claimed in claim 11, wherein, when the view data regulation was carried out double-sided recording modes, control module used the second controllable gray scale value, and wherein, this second controllable gray scale value obtains by multiply by above-mentioned product with coefficient M, and coefficient M is less than 1.0.

13. printer driver as claimed in claim 9, wherein, described control module comprises the gray scale amending unit, and this gray scale amending unit is carried out the common gray scale correction that is used to control the controllable gray scale correction of liquid adhesive capacity or is not used in control liquid adhesive capacity selectively based on the definite result or the outside instruction of supplying with of determining unit.

14. printer driver as claimed in claim 13, wherein, described control module adopts the controllable gray scale value, with the correction of execution controllable gray scale, and uses common gray value, to carry out common gray scale correction.

15. printer driver as claimed in claim 14, wherein, described controllable gray scale value is the product of common gray value and COEFFICIENT K, and wherein, COEFFICIENT K is arranged between 0.35 to 0.65.

16. printer driver as claimed in claim 15, wherein, when the view data regulation is carried out double-sided recording modes, control module adopts the second controllable gray scale value, wherein, this second controllable gray scale value obtains by multiply by described product with coefficient M, and coefficient M is less than 1.0.

17. one kind is used to handle and will supplies to the data processing equipment that image reproduces and form the view data of device, wherein, this image reproduces and forms device and can adopt the record head that has a plurality of nozzle arrays or utilize a plurality of record heads to carry out bidirectional record, and described record head is used for the drop of at least one color is ejected into recording medium; Described data processing equipment comprises:

18. data processing equipment as claimed in claim 17, wherein, described control module comprises the gray scale amending unit, this gray scale amending unit is used for selectively carrying out controllable gray scale correction or common gray scale correction, wherein, described controllable gray scale correction is used for reducing aberration at bidirectional record, and described common gray scale correction does not reduce the aberration on the view data.