JP2003326687A - Method for driving printer head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To print images by different resolutions. <P>SOLUTION: A method is provided for printing with a resolution different from that of a type of a printing head while the one type of the printing head is used. According to the method, a speed in a fast scanning direction is changed with reference to a reference velocity whereby the printing head is intended to be driven, while a firing frequency of a set of nozzles is preferably kept unchanged. Its firing order may or may not be changed. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a printer
Apparatus and method for the dropping, especially drop-on demand
n-demand) ｛DOD｝ Inkjet type
The present invention relates to a printing method and apparatus. [0002] 2. Description of the Related Art Day-to-day inkjet is considered.
Sometimes there are two main groups: thermal inkjet
(Thermal inkjet) and piezo in (piezo in)
kjet). [0003] In thermal ink jet technology, small resistance
A vessel rapidly heats a thin layer of liquid ink. The heating in
The ink forms a vapor bubble that follows the ink drop through the nozzle.
Or eject it to form text or images.
Place them precisely on the surface. When the foam collapses, it
Creates a vacuum that draws in fresh ink. This process is every second
Repeated thousands of times. In thermal inkjet technology, water
A base ink is used. Piezoelectric pudding, commonly called piezo
Tying technology is similar to squirt gun.
Use force to pump the ink through the nozzle. Emergency
Piezo crystals used as precision pumps
Place on printing media. Wide range of ink formulations
(Ink formulations) {solvent, water, ultraviolet (UV)}
May be used. There are a number of different piezo concepts. [0006] Patent Document 3, Patent Document 4, Patent Document 5, and
The typical concept described in US Pat.
(Shared walls). The pressure chamber containing the ink is
Adjacent to each other, while their separating walls
Eta. The actuator always has two channels
, So two adjacent channels at the same time
It is impossible to eject drops from the In Patent Document 4
Has three interlaced nozzles
Explained that they can be divided into groups (A, B, C)
I have. Adjacent nozzles fire in sequence ABC (fire
d) is done. To print a dot on a straight line
A solution is possible. A first solution is a complete nozzle array under an angle
use. By doing this, the resolution is increased, and
Use the right fast scan speed
As a result, the sequence A, B, and C are fired.
The dots (dots) are on a straight line. The second solution is a head perpendicular to the high-speed scanning direction.
But in the head, the A, B, and C nose
Is staggered in the high speed scanning direction.
You. Pixel line printing is divided into three cycles
Can be In the first cycle, one of the A channels
Separation wall to the side of is driven by a pulse signal (if ink
Is to be ejected from them-should be printed
Depending on the image). In the second cycle, the B channel throat
The separation wall to one side is driven by a pulse signal (if
If ink is to be ejected from them-printed
Depending on the image to be). In the third cycle, the C channel
Separation wall on either side of the device is driven by a pulse signal
(If ink should be ejected from them-pudding
Depending on the image to be loaded). Not included in the current cycle
Pressure pulse developed in a new channel ejects ink
(Eject) those in the channel intended to
Not more than half. The printing device is 2 minutes
Such a pulse having a magnitude of 1 will trigger the ink ejection.
It is deployed so that it does not wake up. The disadvantage of this concept is that
Once the firing frequency is specified, the ABC
Only one fast scan speed to print
It cannot be used. In the high-speed scanning direction, the head
Is about 0.07056 mm (1/360 inch
H) Print. FIG. 1 shows that each fires during a different firing cycle.
One set of A nozzles, one set intended to be fired
Called a set of B nozzles and a set of C nozzles
Prior art pipes having nozzles 12 divided into sets
1 shows an azo print head 10. Different set of nozzles
Is the stagger distance in the high-speed scanning direction
Only D1 is staggered against each other
You. If the nozzles are not divided into three groups G
All the first nozzles are part of the set of A nozzles,
The second nozzle is a part of the B nozzle, and all the third nozzles are C nozzles.
This is the part of the set of nozzles. All of one set A, B, C
The nozzles are located on one straight line in the slow scan direction S,
Are staggered distances D1 with respect to each other in the fast scanning direction F.
It is positioned in. As an example, the print head 10 is of type 3
It is considered to be 60 heads (type 360 head). This
This is because the print head 10 is 360 in the high-speed scanning direction F.
DPI (dpi) (pixels per inch) printing
It is meant to be provided for wings. This type 36
0 print head 10, the noise in the high-speed scanning direction F
The distance D1 between the holes 12 is about 25.4 / 360/3 mm (1
/ 360 inches / 3) = 70.56 μm / 3 = 23.5
2 μm. If the firing frequency is equal to the total A, B, C
Means the set is fired every 80.56 μs
If the frequency is 12.4 kHz, the pre-
Head speed is about 0.07056 mm (1/360
Inches) * 12.4 kHz = 0.875 m / s.
The nozzle 12 is fired in an ABC sequence and the A
The chirp leads the print head 10 in the fast scanning direction F.
On the edge to do. The cycle frequency is 12.4 kHz * 3 =
37.2 kHz. Or another way
C: The set of B nozzles is 26.
Fired 88 μs later, the set of C nozzles
When the set fires 53.76 μs later, it is formulated
You. After 80.65 μs, the set of A nozzles fired again
Shoot. One type of printing is an "interpenetrating
Linting (mutually interstitial printing)
Called, and for example, as in US Pat.
Also called shingling, where the fast scan direction
Adjacent pixels on the raster line are the same noise on the printhead.
Is not printed depending on the file. However, pudding
The teing dictionary binds "overlapping arrangement" (book-making)
This is called a method of compensating for creep in the vehicle. The inventor
The adjacent pixels on the raster line are printed by the same nozzle.
Some industrially acceptable for printing
Do not know the term. Therefore, from here on,
The term “mutually interstit printing”
ial printing) "or" intrusive and interposed between each other
Printing (interstitial mutuarlly intersp
ersed printing) ”is used.
The image to be printed is a set of partial images (sub-im
age), and each partial image is
Including spaces, where there is only one space.
At least a portion of the space in the printed partial image
Minute is the position for the printed part of another partial image
(Location) and vice versa. Keeping the same firing frequency, but given above
180 * 180d with 360 type print head
When it is desired to print a pi image, the print
Head speed should theoretically be doubled to 1.750m / s
It is. Increase the print head speed to 1.750 m / s
Use a 360-type printhead that must be doubled
Above to print 180 * 180 dpi images
The delay for firing B and C is that the dots are on the same line
Shorter to ensure it is printed on
There is a need. Nozzle set B is the same as nozzle set A13.
After 44 μs, and nozzle set C is nozzle set A
26.88 μs after firing. these
The firing frequencies are too close to each other and therefore 360
The type print head prints 180 * 180 dpi images.
Cannot be used to lint. On the other hand, using the 360 type print head
Want to print 720 * 720 dpi image
The set of A nozzles, the set of B nozzles
The firing delay between the set and the set of C nozzles is 5
Increase to 3.76 μs. However, 80.65μ
After s the set of A nozzles must fire again
And sufficient time to fire the set of C nozzles
Is not left, so the 360 type printhead
Also used to print 720 * 720 dpi images
Can not. It is an object of the present invention to provide one type of printing.
With the head, the type of printhead used
Provides a way to print at a different resolution than the design resolution
It is to be. [0019] [Patent Document 1] US Patent No. 4,972,270 [0020] [Patent Document 2] European Patent No. 623473 [0021] [Patent Document 3] US Patent No. 4,887,100 [0022] [Patent Document 4] WO96 / 10488 [0023] [Patent Document 5] WO97 / 04963 [0024] [Patent Document 6] WO 99/12738 [0025] [Patent Document 7] US Patent No. 4,967,203 [0026] The above objects are attained by the present invention.
This is achieved by a print head driving method. used
The print head is in the slow scan directio
n) has a vertical axis and at least one group of markers
Marking required with king elements
It has a raw array. One group of marking elements is:
Fast scan direct perpendicular to the slow scan
ion) with the stagger distance
Staggered against. The print head is
Girder distance, reference firing frequ
ency) equal to multiplied by Fref
rence velocity) intended to be driven by Vref
I have. One group of one marker at each reference firing frequency pulse
A firing element can be fired (it
Depending on the image to be loaded). The print head
Prints an image at a first resolution
It is intended to be fired according to a reference firing order. Book
Inventive method prints the same image at different resolutions
It is characterized by operating at an operating speed different from the reference speed for
Attached. If there are n marking elements in one group
Then, the operation speed is the reference speed / (nX + 1) or the reference speed.
Degrees / (nX-1) where X is greater than 0
Is an integer. Firing the marking element in the first case
The order is equal to the reference firing order, in the second case it is the reference firing order
Equivalent to the firing order. The above method is a high-speed interpenetrating printing.
May be used to perform The present invention also provides a vertical axis in the first direction (S).
And the marking elements (A, B, C; A,
B, C, D) having at least one group (G).
Array of working elements (A, B, C; A, B, C, D)
PRINTING EQUIPPED WITH A PRINT HEAD (10)
Grouping (G) marking devices
Elements (A, B, C; A, B, C, D) in the first direction
Stagger distance (D1) in the second direction (F) perpendicular to (S)
The print head is staggered with respect to each other.
(10) is the reference firing frequency at the stagger distance (D1).
(Fref) multiplied by a reference speed (Vref)
f) is intended to be driven in
Marking elements can be fired at each reference firing frequency pulse
And the marking elements (A, B,
C; A, B, C, D) print the image at the first resolution.
Is intended to be fired in a standard firing order
Vice further prints the same image with second resolution printing
At an operating speed different from the reference speed to print the
Means for driving the print head (10)
You. One group for this printing device
(G) has n marking elements (A, B, C; A, B,
C, D), and print at the second resolution.
The operating speed is equal to the reference speed / (nX + 1),
Where X is an integer greater than or equal to 0;
The marking element for printing the second resolution
The firing order of (A, B, C; A, B, C, D) is
This is the same as the firing order (ABC; ABCD). instead of,
This printing device has n in one group (G).
Marking elements (A, B, C; A, B, C, D)
And the operation speed for printing the second resolution is a reference speed.
/ (NX-1) where X is an integer greater than 0
Wherein said marking element prints said second resolution.
The firing order of (A, B, C; A, B, C, D) is
Equivalent to the reverse of the firing order (CBA; DCBA). For any of these arrangements, one group
(G) the marking elements (A, B, C; A, B, C,
D) is used to form a plurality of rows of marking elements.
Stagger distance in a second direction (F) perpendicular to the first direction (S)
Only (D1) may be staggered against each other, and
The printing device is supplied to another line
One line mark delayed for print data
Supply printing data representing the image to the printing element.
May be adapted. The present invention also relates to a printing head.
Any of the methods of the present invention when executed on a computing device
Includes a computer program product for performing
A machine readable data storage device is provided for the computer.
The program product may be stored. The computer tap
Program products are available on local or wide area telecommunication networks.
May be transmitted on the network. The present invention also provides a vertical axis in the first direction (S).
And the marking elements (A, B, C; A,
B, C, D) having at least one group (G).
Array of working elements (A, B, C; A, B, C, D)
Print head (10) with
The (G) marking element has a first element perpendicular to the first direction (S).
In the two directions (F), the stagger distance (D1)
The print head, which is being tagged, is printed using
Printer for printing images on tenting media
Control unit, the control unit comprising
Shot head (10) at the stagger distance (D1).
Reference speed equal to firing frequency (Fref) multiplied
(Vref) adapted to control driving
Each firing of one marking element of a group
To control with reference firing frequency pulse and first resolution
The print head in the standard firing order to print the image in degrees.
(10) marking elements (A, B, C; A, B,
Further printing to control the launch of C, D)
The reference speed to print the image at a second resolution of
The print head (10) at an operating speed different from
Means for controlling the operation. In this field, there is a continuous improvement and change of devices.
Although there is further evolution, this concept departs from
That the more efficient device of this nature
Lists substantial new and novel improvements that result in offerings
It seems to be. [0034] Other features and advantages of the present invention are illustrated by way of example.
The following was performed in conjunction with the accompanying drawings illustrating the principles of the invention
It becomes clear from the detailed description. This detailed description is intended to be illustrative of the invention.
Without limiting the enclosure, they are given for example only. under
Reference figures referred to in the description refer to the attached drawings. [0035] DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to various embodiments and drawings.
However, the invention is not limited thereto but only by the claims.
Limited. The term "printing" used in the present invention
(Printing) ”should be interpreted broadly.
Ink or ink on the printing substrate
To form markings with other materials or methods
About. Various prints that may be used in the present invention
In 1998, Irvine of Irvine,
Published by the Palatino Press,
Book "Non" by J.L. Johnson
Principles of no impact printing
n-impact printing) ”, for example, heat
Thermal tranfer printing,
Thermal dye transfer printing
rinting), deflection inkjet printing (def
lected inkjet printing), ion projection printing
Linting (ion projection printing), electric field control
Printing (field control printing), impulse
Imprint ink jet pr
inting), drop-on-demand inkjet printing
(Drop-on-demand ink jet printing), continuous ink jet
Printing (continuous ink jet printin
g). Non-contact printing method is particularly preferred
No. However, the invention is not limited thereto. Base
Any form of printing, including dots or droplets on the board
Also included within the scope of the invention, e.g.
Plastic logic for Gister printing
(Plastic Logic) (http://plasticlogic.com/)
Used and described as piezo electric printing
Even if the head is used to print polymer material
Good. Therefore, the term "printing" of the present invention is not
Not only marking with conventional stain ink, but also base
The printed two- or three-dimensional structure of the various characteristics above
The formation of structures or areas is also included. One example is printin
Offset printing plate (off-set
water-repellent on the substrate to form a printing plate)
Water repellant or water attractivereg
ions). Therefore, the term "pre
Printing medium "or" printing medium "
Printing substrate ”is also paper,
Printing press not only for transparent sheets and fabrics
(Printing press)
Has a broad meaning, including flat or curved plates
Should be obtained. In addition, the printing is at room temperature
Or it may be carried out at a high temperature, for example, a hot melt adhesive
For printing, the printing head is
It may be heated to a degree or more. Therefore, the term "ink"
(Ink) ”is not only a conventional ink, but also a solution or
Printed by lowering their viscosity at high temperatures
Not only solid materials like polymers, but also
Information defined by the structure on the surface of the
Gender, or spot on microarrays
Binding molecules such as DNA (DNA)
olecule) to provide certain features to the printed substrate
Materials, including also, should be interpreted broadly. Solvent and
Thus, both water and organic solvents may be used. Departure
The inks used in Ming are antioxidants, pigments and crosslinks
Contains various additives such as cross-linking agents
May be. In the following, the invention relates to one type of pudding
For example, the print head is moved in the first direction (high-speed running).
Traversing the printing medium in the
The print medium is placed in a direction perpendicular to it (slow scan direction).
Ink cartridge that indexes forward to the printhead
The explanation will be given in regard to jet printing. The method of the present invention
The speed in the high-speed scanning direction is the speed at which the print head is driven.
Is changed relative to the reference speed intended to be
The firing frequency of the set of two nozzles is kept unchanged
You. This is intended to print images at a certain resolution
Using other types of printheads
This is done so that the image can be printed in degrees. Also
If necessary, the firing sequence can be varied as well.
You. First Embodiment: Three Markins in a Group
Element Three sets of print heads 10 used in the first embodiment
Marking elements or nozzles 12: 1 set of A nose
1 set of B nozzles and 1 set of C nozzles
Have. This is within one group G as shown in FIG.
It means that there are three nozzles 12. A certain basic resolution (a certain basic reso
lution) print intended to print images
Change firing sequence from ABC to CBA for head 10
The fast run used for the ABC sequence while changing
Using half of the scanning speed is twice the basic resolution
Enables printing images with a certain resolution
You. For example, if the head 10 is normally 12.4 kHz
At the frequency of 0. (with the firing sequence of ABC).
Two intended to be moved at a speed of 875 m / s
23.52 μm stagger between adjacent sets of nozzles
A type 360 head having a distance D1
Using a high scan speed (ie, 0.4375 m / s)
By firing the nozzle in sequence CBA
Resolution of about 28.3465 dpmm (720 dpi)
Can be used to print images in degrees. If the type 360 head described above is used,
When stopped, the following is obtained. If the set of C nozzles is
If fired first, the set of B nozzles
It has already advanced by 23.52 μm in the scanning direction F. 0.875
At a speed of m / s (at a firing frequency of 12.4 kHz)
The set of B nozzles is placed in the fast scan direction before the actual firing.
F would lead another 23.52 μm. But
However, when half the fast scan speed is used, the B nozzle
The set of only 11.76 μm before it is fired
Prints with the set of C nozzles
Dot and dot printed by the set of B nozzles
Is 35.28 μm in the high-speed scanning direction.
You. This is about 28.3465 dpmm (720 dpi)
Corresponds to the distance between dots in the image. In the CBA firing sequence, one cycle
Dots printed with this set of A, B and C nozzles
Are not printed on a single line, but during different cycles
About 0.07056 mm (1/3) between printed lines
60 inches) pitch and instead they
Approx. 0.03528 mm (1/720 inch)
Printed on three different lines with Different high-speed scanning using the same head type
Other pitches or modes at speed are possible. "Standard pick
The only difference in “standard pitch” is the system CBA
The dots printed during the cycle are one regular A
In contrast to the dots printed during the BC cycle, 1
It is not on a straight line. "Regular ABC cycle (no
rmal ABC cycle) ”means AB
Firing the nozzle 12 in a C firing sequence and the head
10 drives the head 10 at the intended reference drive speed.
Means that In general, the following relationship is obtained between the speeds:     v_mode= V_FF/ C (1) Where v_modeIs the speed for the mode considered v_FFIs for use at a predetermined launch frequency FF
This is the reference speed for the head type. The speed v_FFIs φ × No
Sul stagger distance (D₁) × given at the firing frequency,
φ is the number of staggered rows of nozzles. [0044]     Head type represented by mode = c * dpi (2) here c = 3i + 1, where i = integer ≧ 0 (3)   The firing sequence is ABC c = 3i-1, where i = integer> 0 (4)   The firing sequence is CBA. This is because, in this embodiment, for example,
Reference speed v for Ip_FFVelocity v equal to one third of_modeTo
That it is impossible to print in a mode that has
The meaning 意味 c is either 3i + 1 or 3i-1
Can never be a factor of 3
Laugh. This is also the solution for the working head for this embodiment.
Print an image with a resolution equal to 3 times the resolution
Means that it is impossible. For deeper analysis, type 90 head can be
To provide performance. [0047] [Table 1] As described above, in one printing cycle
The printed pixels are not printed in one row. the same
Printed by B or C nozzle and A nozzle during cycle
The distance between pixels to be calculated is roughly given by (1 / mode
(Expressed in pitch):   Pitch = 25.4 / Mode = 25.4 / (c * head type) [mm] (5)   ABC cycling:   Δ cycle_AB= Int (c / 3) = (c-cmod3) / 3         Or the distance AB = (Δ cycle_AB* Pitch) x 25.4 [mm] (6)   Δ cycle_AC= Int (2c / 3) = (2c-2cmod3) / 3         Or distance AC = (Δ cycle_AC* Pitch) x 25.4 [mm] According to the above, if nozzle A is on the image line during cycle x
To print a dot on the B nozzle, cycle B +
during int (c / 3) and nozzle C cycle x + i
Print on the same image line during nt (2c / 3). Thus, type 90 head in 360 mode
For c printing, c = 4 and Δ cycle_AB
= 1 and Δ cycle_AC= 2, so if nozzle A
Prints a dot on the image line during cycle x,
Nozzle B draws a dot on that image line during cycle x + 1
Prints and nozzle C prints the image during cycle x + 2
Print dots on the image line. For CBA cycling:   Δ cycle_BA= Int (c / 3) +1           Or distance_BA= (Δ cycle_BA* Pitch) x 25.4 [mm] (7)   Δ cycle_CA= Int (2c / 3) +1           Or distance_CA= (Δ cycle_CA* Pitch) x 25.4 [mm] According to the above, if nozzle A is on the image line during cycle x
To print a dot on the B nozzle, cycle B +
print on the same image line during int (c / 3) +1
Nozzle C is in cycle x + int (2c / 3) +1
To print on the same image line. Thus, type 360 in 720 mode
In the printing of the pad, c = 2 and Δ cycle
_BA= 1 and Δ cycle_CA= 2, so if the nozzle
A does not print dots on image lines during cycle x
Nozzle B drops onto that image line during cycle x + 1.
And print nozzle C during cycle x + 2.
Dots are printed on the image line of. FIG. 2 shows an example of the case of ABC firing at c = 7.
About 24.803dpmm (630dpi) mode
5 shows a type 90 head. As shown in Table 1, 90
The normal or reference speed of the ip head is 3.50 m / s
is there. According to equation (1), the approximately 24.803 dpmm
The speed in the (630 dpi) mode is also shown in Table 1.
3.50 / 7 = 0.50 m / s. Equation (3)
For c = 7, the nozzle is driven in ABC sequence
Should be. During the first cycle, the set of A nozzles
Driven first. A nose where needed (according to the image)
The droplet on the position 14 on the straight line 16 in the slow scanning direction S.
Put out. At the moment of firing the set of A nozzles,
The set of chicks is about 25.4 behind the set of A nozzles
/ (Head type.3) = 25.4 / 90.3 = 25.
4/270 mm (= 1/270 inch) = 94.07 μ
m at a position 18 and a
Is 188.15 μm behind the set of A nozzles.
It is arranged at a separation position 20. Fire the set of B nozzles
Before the head 10 is moved by a distance of about 2 in the fast scanning direction F.
5.4 / (c. Head type.3) = 25.4 / 189
0 mm (= 1/1890 inch) = 13.44 μm only
Be moved. The set of B nozzles during the first cycle
Is the slow scanning method required by the image to be printed
The droplet is ejected on the position 22 on the straight line 24 in the direction S. B Nose
At the moment of firing of the set of nozzles, the set of C nozzles
Position 2 at a distance of 94.07 μm behind the set of nozzles
6. Prior to firing the C nozzle, the head is
A distance of about 25.4 / (c.
P. 3) = 25.4 / 1890 mm (= 1/1890 a
) = 13.44 μm. The first cycle
During the installation, the set of C nozzles
The position on the straight line 30 in the slow scan direction S required by the image
A drop is ejected on 28. At the moment of firing the set of C nozzles,
The set of A nozzles is 18
Located at a position 32 at a distance of 8.15 μm, and
The set of chiles is 94.07 μm behind the set of A
(Or the set of C nozzles)
94.07 μm before During the second cycle
Prior to firing, the head 10 moves in the fast scan direction F13.
It is moved over a distance of 44 μm. During the second cycle, A
The set of nozzles depends on the image to be printed
On the required position 36 on the straight line 38 in the low-speed scanning direction S
Inject drops. The moment of firing the set of A nozzles
In the meantime, the set of B nozzles is behind the set of A nozzles.
It is located at a position 40 at a distance of 94.07 μm. B Nose
Before firing the set of heads, the head 10
It is moved over a distance of 13.44 μm in the scanning direction F. B
The set of nozzles is required by the image to be printed.
The important point is that the droplet is dropped at the position 42 on the straight line 43 in the
Inject. The above printing scheme continues in the same way.
Can be In the next (third) ABC cycle, the B nozzle
Drops are required by the image to be printed, a straight line 16
Fired in the upper position, and the drop of the C nozzle
To the position on line 24 required by the image to be
Will be issued. This is because c = 7 and ABC cyclin
For the purpose of this discussion, corresponding to that given in equation (6),
You. [0057]   Δ cycle_AB= Int (7/3) = 2 (8)   Δ cycle_AC= Int (2 * 7/3) = 4 Thus, if the set of A nozzles is linear during cycle x
Do not print on (eg line 16 during cycle 1)
Thus, the set of B nozzles is cycle x + 2 (given
In the example, during cycle 3), print on that same straight line and
The set of C nozzles then cycle x + 4 (given
In the example we print on that same straight line during cycle 5)
There will be. The print head 10 is printed.
The printer that prints the image depends on the content of the image to be printed.
Continue to move in the high-speed scanning direction F until the end of the printing medium
You. Dots are straight lines 16, 24, 3 in the slow scanning direction S.
Printed on 0, 38, 43, etc., each straight line
If necessary for the image to be printed,
To the set of B nozzles and the set of C nozzles
Contains more printed dots. The low-speed scanning method
The distance between two straight lines in the direction is 25.4 / (c.
Ip) = 25.4 / (7.90) mm ｛= 1 / (7.9
0) inch｝ = 40.32 μm, which is 630d
pi indicates that the image is printed. In FIG. 3, two nozzle arrays 52, 54
The nozzle plate 50 of FIG.
2,54 is about 88.5826 npmm (noise per cm)
｛) With ｛= 225 npi (nozzles per inch)
And the combined resolution is about 17.7165 dpm
(= 450 dpi).
That is, each nozzle of the second array 54
In the scanning direction S, between the two nozzles of the first nozzle array 52
Is always placed in the middle of One in the low-speed scanning direction S
The distance between two adjacent nozzles in the nozzle array is 112.8
9 μm. The nozzle stagger in the high-speed scanning direction F is 9
4.07μ (type 90 head). As an example, 90 at least two passes
To obtain an image with a resolution of 0 dpi, the type 90 head
Mode is used in 450 dpi mode. In mode 450
The type 90 head used is CBA as shown in Table 1.
Follow the printing cycle. During the first pass, during the first cycle,
The set of C nozzles is fired. Required (depending on image)
Where the C nozzle sprays drops onto the printing medium.
The nozzle C of the first nozzle array 52
Drop onto the device 62 and the C of the second nozzle array 54
The nozzle ejects a drop onto location 64. C nozzle
At the moment when the nozzle is fired,
The set is 2 before the set of the C nozzle of the first array 52.
5.4 / (head type.3) mm ｛= 1 / (head type
Ip. 3) Inch｝ = position 66 at a distance of 94.07 μm
And the set of B nozzles of the second array 54
Is 94.07 before the set of C nozzles in the second array 54
It is located at a position 68 μm. Launch of the set of B nozzles
Prior to firing, the head 50 is moved a distance of about 2 in the fast scan direction F.
5.4 / (c. Head type.3) mm = 18.81μ
Moved over m. During the first cycle, the first nozzle
The set of B nozzles for ray 52 should be printed
Eject a drop onto location 70, as required by the image, and
The set of B nozzles in the second array 54 is printed
A drop is ejected on the position 72 required according to the image to be formed. B
At the moment of firing the set of nozzles, the first array 5
The set of 2 A nozzles is the B nozzle of the first array 52.
Located at a position 74 at a distance of 94.07 μm in front of the set
And the set of A nozzles in the second array 54
94.07 μm before the set of B nozzles in array 2 54
At a position 76 at a distance of A set of A nozzles
Before firing, the head 50 moves one time in the fast scan direction F.
It is moved over a distance of 8.81 μm. The first array 52
The set of A nozzles at position 78
This set of A nozzles is on position 80 and both positions are printed.
The droplets are ejected when required by the image to be printed. When the set of A nozzles fire, the first
The set of C nozzles of array 52 is located at location 82.
And the set of C nozzles in the second array 54
Placed in Fire this set of C nozzles during the second cycle
Before firing, the head 50 is moved one time in the high-speed scanning direction F.
It is moved over a distance of 8.81 μm. The first array 52
The set of C nozzles is located at position 86 in the second array 54.
The set of C nozzles is on position 88, and both positions are printed.
The droplets are ejected when required by the image to be printed. At the moment of firing the set of C nozzles,
The set of B nozzles of the first array 52 is
A distance of 94.07 μm before the set of 52 C nozzles
B nozzle of the second array 54, located at position 90
Before the set of C nozzles of the second array 54
It is located at a position 92 at a distance of 94.07 μm. The second
Before firing the set of B nozzles during a cycle,
The head 50 is at a distance of 18.81 μm in the high-speed scanning direction F.
Moved up. Of the B nozzle of the first nozzle array 52
The set is the position required by the image to be printed
The droplet is ejected at 94 and the B nozzle of the second
The position 9 required by the image to be printed
Inject drops on 6. Fire the set of B nozzles
At a moment, the set of A nozzles of the first array 52 is
94.07 μm before the set of B nozzles in one array 52
At a position 98 at a distance of
The set of A nozzles is the same as the B nozzles of the second array 54.
Placed at position 100 at a distance of 94.07 μm before the set
It is. Firing the set of A nozzles during the second cycle
Before the head 50, the head 50 is moved to 18.8 in the fast scanning direction F.
It is moved over a distance of 1 μm. The second printing server
During the cycle, the set of A nozzles of the first
Drop at location 102 as required by the image to be printed
And the set of A nozzles of the second array 54
Drop on location 104, required by the image to be printed
Inject When the set of A nozzles is firing,
The set of C nozzles in the first array 52 is located at position 106.
And the set of C nozzles of the second array 54 is positioned
108. During the third printing cycle
Prior to firing the set of C nozzles, the head 50 is
It is moved in the scanning direction F over a distance of 18.81 μm. The
The set of C nozzles of the first array 52 is printed
The droplet is ejected to the position 110 required by the
The set of C nozzles in array 54 should be printed
The droplet is ejected to a position 112 required by the image. The third
First array 5 at position 110 during the printing cycle
Drops printed by the set of 2 C nozzles are straight lines
111 is printed on the line 111, but the first
The set of B nozzles in the array 52 caused a drop 70 before
Printed (during the first printing cycle)
You. In a similar manner, during the third printing cycle
At position 112, the set of C nozzles of the second array 54
The printed drop is printed on the straight line 113
However, on the line 113, the B nozzle of the second array 54
Drop 72 before setting (first printing cycle
Is printed). This printing plan continues. The pudding
The continuity of the ting plan is more advanced numbering of dots
No, but is shown in FIG. As you can see, the slow scan
Of the first array 52, as from a straight line 114 in the direction
With this set of C nozzles, a drop is printed at location 116.
On the other hand, the droplets 118 and 12 already exist on the same straight line 114.
0, 122, 80, and 124 respectively correspond to the second array 5
4 of the C nozzles, the second array 54 of the B nozzles
The set, the set of B nozzles of the first array 52, the second
The set of A nozzles of array 54 and the first array 5
2 previously printed by the set of A nozzles
You. Before starting the second pass, the low-speed scanning
Drop droplets between droplets already printed in direction S
The print head 50 moves in the low-speed scanning direction S so that
Is done. For the example under consideration, if the resolution is two
If the print head 50 should be obtained in
On paper feed distance of 8.22 μm or an odd multiple thereof
Is moved in the low-speed scanning direction S. The second and more advanced
During the printing pass, the CBA cycle then
Applies as described for the printing path. According to the above, if the print head type is
If the modes are the same, use the normal print order for the data.
Three phases in one cycle on one slow scan line
It is only possible to have these dots printed
It is clear that. Otherwise, the print data
The right data is provided to the relevant nozzles at the right time
Reorganized, or “shuffled”
d) "Must be done. The most convenient solution is along the fast scan direction.
The number of cycles given by Equations 6 and 7
Only for the different phases (if different
One phase, also called an image band if the lure array is combined
). With phase ABC
In the case of a three-phase system, between pixel lines A and B and between B and C
Is shifted by the equation (6) when the CBA cycle is included.
Equal to a number equal to the Δ cycle given by 7)
Become. Input data so that the final image is printed correctly.
It is necessary to reorganize the data sequence. A certain low
Pixel data on the fast scan line is printed in the A phase
At the same time, data for the same low-speed scanning line but for the B-phase nozzle
Will be presented to them later. Another Δ cycle
After that, the C-phase nozzle has data on its slow scan line.
Will receive. When considering one cycle, the B phase
In the Δ cycle dot position behind the phase A during
Prints a dot, while the C phase is behind the A phase
The 2Δ cycle dot position is printed. For example,
The 2 or 4 dot positions are as defined by equation 8. The de
Data conversion needs to be done for each new fast scan and why
Belong to different phases when using interpenetrating printing
Because some nozzles print a certain pixel line in the high-speed direction
is there. This printing technique is based on the
If you are not staggered and are on a straight line, you need high speed running
More than the number of pixel positions in the high-speed scanning pixel line for the end of inspection
Requires pixel location. Paper between successive printing passes
How feeds are calculated and color sequences
How Wet-On By Enhancing Boundary Conditions Above
Wet-on-wet printing or briday
It will now be described in detail whether bleeding can be avoided. The following is expressed in pixels (on the final image resolution)
Paper feed L₁And paper feed L_TwoFor
This is a general calculation plan for obtaining values. It is n = 764 nose
Based on the print head 130 shown in FIG.
Will be explained. The print heads themselves are each about
7.0866npmm (= 180npi)
Two-nozzle array with 382 nozzles
132 and 134. Both nozzle arrays 132, 13
4 by a half pitch to provide a complete 764
The nozzle head 130 is approximately 14.1732 npmm (= 3
It has a nozzle pitch of 60 npi). Two nozzle holes
Are each of the three phases (A, B and C)
Consisting of A given calculation may be in different phases and
Do not consider staggering of nozzles even in your family. First, the length of the head 130 (final resolution)
The total number of passes required (expressed in pixels in degrees)
Divided by the number of sub-images to be
Imaginary paper feed L_baseCalculate
You. The length of the head 130 is as follows:   n (NP / DP) = 764 * 720/360 = 1528 pixels (9) Here, the nozzle pitch NP = about (25.4 / 360) mm
｛= (1/360) inch｝ and pixel pitch DP = about
(25.4 / 720) mm {= (1/720) inch}
It is. In fact, the first pixel corresponding to nozzle 1 is also the pixel number
When labeled No. 1, the highest
The latter pixel is the pixel 1527. 1527 images needed
× wp × 720 ｛about 25.4 dpmm (= 720 dp
i) having a resolution of i) and a printing width of wp. all
The number of passes required to print all pixels is P (I / h
s) where P is the interpenetrating printing
The number of passes, I is the required number of interlaced steps
Some (normally given in dpi / npi or NP / DP
Is). Interlaced operation is a printing device
Used to increase the resolution of the That is, low speed
Between the nozzles on the printing head along the scanning direction S
Is a certain distance X, but the distance in the low-speed scanning direction S is
The distance between the printed dots is less than this distance. Pre
Printing medium (not shown) and the printing medium
The relative motion between the pads 130 is given by dividing the distance X by an integer.
Indexed by the given distance. If the value in the above example
Is taken, the number of interlaced steps is I =
dpi / npi = 720/360 = 2,
The number P of input printing steps becomes 8. parameter
Hs, number of nozzle rows to print the same color
However, when different nozzle arrays of the same color are considered,
Used, and in the current example, n = 764 nozzles is about 14.1
Taken at 732 npmm (360 npi) and thus hs
= 1. Two nozzle arrays with n = 382 nozzles
When taken separately (each at 180 npi), hs = 2
Must be taken, but the steps to interlace
The number also doubled (because 720/180 = 4
), L_baseThe end result is the same. In the example given, L_baseThe result for n ｛(N
P / DP) / P (I / hs)}.
Nearly:   L_base= Int [n {(NP / DP) / P (I / hs)}] = int (95.5)                                                     (10) And 95 pixels. In this example, 2 in the low-speed scanning direction S.
Printed in the fast scan direction F between two successive nozzles.
There is a single line of pixels that are not
Because the number of taps is equal to two). Next, the parameters defined below
I 'is introduced,   I '= I / hs (11) Where I is the number of required interlacing steps
Hs is the number of nozzle rows that print the same color.
You. The paper feed is L_base-L_basemod
By performing I ', L equal to a multiple of I'_baseDerived from
He returns to 94. I '= 2, and 94 is hidden
Is a multiple of I '.
Mode is always the same about 14.1732 dpmm (= 360d
pi) Print the image and never touch the pixels between the nozzles
Don't dress. To avoid the above, the value of 94 is 1₁Or
l_TwoIs incremented only (each of the first paper
Feed L₁And the second paper feed L_TwoTo use). Pe
Odd value for one of the perfeeds is not addressed before
Ensure that it will be printed on pixel lines (also
Another paper feed can be even). [0077] (Equation 1) The first paper feed L₁And the second page
Perfeed L_TwoThe above equation for₁, L_TwoSoshi
Whole set of value by j and i
s). Many boundary conditions for I '> 2₁as well as
l_TwoThis set can be limited by applying to
You. [0079]       | L₁| = 1, 3, 5, 7,. . . <K (13)       | L_Two| = 1, 2, 3, 4,. . . <K '       If I '> 2, l₁+ L_Two≠ kI ’where k is an integer (14) Furthermore, L₁And L_TwoMust satisfy a set of two equations
No: -L₁And L_TwoThe linear combination of is the head expressed in pixels
Should be equal to the full length, -L₁And L_TwoCombine
Coefficients a and b are equal to the total number of paths P * I '
Should be (equal to 16 in this particular case), or
Symbolically represented by: [0080] (Equation 2) L₁, L_Two, I and j as a function of
A different way to write more explicitly     L₁= (L_base-L_basemodI ') + l₁-jI '     L_Two= L₁-l₁+ l_Two+ (1 + i + j) I '(16)     a = P * I'-b     b = {n (NP / DP) -L₁* P * I '} / {l_Two-l₁+ (1 + i + j) I '} For the above example, L₁And L_TwoPossible values for i = 0,
j = 0, l₁= 1, l_Two= 1 for: [0082] (Equation 3) The scheme of the above calculation for equation (16) is l
All L based on 1, l2, i and j₁, L_TwoAnd attached
Associated a and b can be found. This is the most common
Method, but it is advantageous to restrict to the above subset
There are many things. The above method can be used for any filling order (filling or
der) is also possible. When printing different colors,
Color, for example, CMK (CMYK)
It is desirable to print in the same order on the pixels. This
Images are filled in a regular manner to ensure
You. This means that P is equal to the number of interpenetrating printing paths.
The nozzle arrays of different colors in the slow scan direction.
Guaranteed by shifting at least 3 / P over distance
Can be The value of 3 is derived as follows: partial image table (sub-
image table) counts N lines. In partial image table
When three pixel rows are filled row by row, the next row on the second row
(Or start on the first line)
Results in bleeding toward row N of the partial image table
On the other hand, the first color is printed on the fourth row.
As mentioned, two consecutive heads need to be shifted
Is at least 3 / P. Print head
The exact amount that needs to be shifted is calculated as
Ru: if l₁And l_TwoIf only
Form feed (formfeed)
s) L₁And L_TwoSequence as short as possible
Attempted: For example, if P * I ′ = 4 × 4 = 16
And L₁L₁L₁L_Two, L₁L₁L₁L_Two, L₁L₁L₁L_Two,
L₁L₁L₁L_Two,. . . If there is, each cycle in the sequence
The period has a length I '= 4, which is the sub-image table (sub-im
age table). After three lines, the next color
Can be started. In this particular case
In addition, the sum of the three periods is exactly 3 / P of the head length.
It is. In order to make the distance between the heads as short as possible,
A period equal to I ′ or I ′ is the period length (periodleng
th) (i × period = I ′)
You. The minimum head shift can be written as: Δx = 3 (I′−1) L₁+ 3L_Two All L₁When the colors are different, the next color may start.
Still require a 3xI 'pass before is possible.
In this case all L_iAre different, the following conditions are satisfied
Must be: [0085] (Equation 4) Here, 1 <j <PI '. [0087] More types of paper feeds
De L_Three, L_Four, It is of course possible to add other
In that case, the above equation can also be corrected accordingly. L₁Passing
And L_TwoThe above-mentioned theory for L with only path P * I '_iMany
Can be expanded by In that case, L_iSatisfies the following conditions
I should do it. [0088] (Equation 5)Now, with the above-described head configuration, the interpenetrating printing
One concept for applying signaling is described in more detail below.
This is explained by the shift of the image band on the pixel. One possibility is to omit the nozzle, or
Or without reducing the number of active nozzles in the printhead.
To print all pixels on the same line in the slow scan direction
Use "redundant cycles" (interpenetrating printing)
To shift the image band on the Δ cycle
It is to be. The printing speed depends on the interpenetrating printing
Lower but higher quality in relation to the amount of wing. Figure
5 for P = 8, the number of interpenetrating printing paths.
13. The IP 90 head results in Δcycle = 1, about 14.
Used in the mode of 1732dpmm (360dpi)
Was. This means that the firing pulse is approximately 2 pixels per pixel in the fast scan direction.
Half of 8.364 dpmm (720 dpi)｝ 1
Available at 4.1732 dpi (360 dpi)
It means there is. To do this is to calculate L
Allows for a typical method, for example L₁= 96 and L_Two= 95 is
can get. The pass 1 on the pixel indicated by “1” in FIG.
Same when the set of A nozzles receives a firing pulse during
The B and C nozzles are not used during the ABC cycle. Next
A firing pulse or cycle, the A nozzle is indicated at 5
Pass over the pixel, but are not fired. B nose instead
Is fired during this pass 1 on the location indicated by 5. So
This causes the A and C nozzles to fire during this second ABC cycle.
Not fired. Finally, in the third firing pulse or cycle,
The A nozzle and the B nozzle are not fired at pixel 9
Pass above, while the C nozzle fires at the pixel indicated by 9
Fired. The next firing pulse is a completely redundant pulse.
No nozzle is fired at position 13. Before pass 2 is executed, L₁= 96 pixels
Is executed in the low-speed scanning direction. Ano
The set of chirps is in pass 2 on the pixel indicated by 2 in FIG.
B and C nozzles receive the same AB
Not used during C cycle. Next firing pulse or cycle
The A nozzle passes over the pixel indicated by 6 but fires
Not fired. Instead, the B nozzle is on the position indicated by 6
Is fired during this pass 2. So the A and C nozzles
It is not fired during this second ABC cycle. Finally,
Nozzle A and nozzle B in three firing pulses or cycles
Pass over pixel 10 without being fired, while the C
The chirp is fired at the pixel indicated by 10. Next firing pal
Are completely redundant pulses and at position 14 which nozzle
Is also not fired. In the next pass, L_Two= 95 pixel paper
Feed is used. From that time on, the paper
Eid is alternated between 96 and 95 pixels. Complete picture
Printing continues to print the image, and 16
Required. From the above, the following rules are derived.
During pass X, the A nozzle is labeled with pass number X.
5 are printed at all the pixel positions shown in FIG.
Print at all pixel locations having X + 4 and
Prints at all pixel locations having the number X + 8. Multiple Interpenetrating Printing with P = 2
No redundancy for paths (fast interpenetrating print
The image bands below the B and C nozzles, respectively.
Filling line by line by shifting 2 and 4 pixels
It is possible. This is basically done for P = 4 and P = 8
It was also. Second Embodiment: Marking required within group
Elementary The above equation is for a system using ψ phase as shown below.
It can be generalized and formulated:   Forward direction: c = ψi + 1   Δ cycle_AB= Int (c / ψ) or distance_AB= (Δ cycle_ABX pitch) × 25.4mm   Δ cycle_AC= Int (2c / ψ) or distance_AC= (Δ cycle_AC× pitch ) × 25.4mm (18)   Δ cycle_AD= Int (3c / ψ) or distance_AD= (Δ cycle_AB× pitch ) × 25.4mm . . . .   Δ cycle_A-ψ= Int ｛(ψ-1) c / ψ) or distance_A-ψ= (Δ cycle_{A- ψ} X pitch) x 25.4 mm   In reverse direction: c = ψi−1   Δ cycle_BA= Int (c / ψ) +1 or distance_BA= (Δ cycle_BA× H) x 25.4 mm   Δ cycle_CA= Int (2c / ψ) +1 or distance_CA= (Δ cycle_CA× Touch) × 25.4mm (19)   Δ cycle_DA= Int (3c / ψ) +1 or distance_DA= (Δ cycle_DA× Touch) × 25.4mm . . . .   Δ cycle_ψ-A= Int ｛(ψ-1) c / ψ｝ +1 or distance_ψ-A= (Δ cycle Le_ψ-AX pitch) x 25.4 mm For systems with 4 marking elements in a group
An example of a printing scheme is given in Figure 6 and described below.
Will be revealed. As an example, type 90 head has mode 1
7.7165 dpi (450 dpi) or c = 5
, Or as seen from equation 18,
The forward plan or ABCD cycling is used
You. As shown in Table 1, for a 90 type head
Is a normal speed or a reference speed of 3.50 m / s. formula
According to (1), about 17.7165 dpmm (450 d
pi) At a speed of 3.50 / 5 = 0.70 m / s in the mode
is there. For ABCD cycling, A
The set of chiles is driven. Required position according to image
Above 11, the A nozzle ejects a drop. The set of A nozzles
At the moment of firing, the set of B nozzles
About 25.4 mm / (head type.
4) = 25.4 mm / 90.4 = 25.4 mm / 360
(= 1/360 inch) = 70.56 μm distance
13 and the set of C nozzles is
At a position 15 behind the unit at a distance of 141.11 μm
And the set of D nozzles is the set of A nozzles
At a position 17 at a distance of 211.67 μm behind
You. Prior to firing the set of B nozzles, the head 10
Approximately 25.4 mm / (c.
P. 4) = (25.4 / 1800) mm (= 1/180
0 inches) = 14.11 μm. B
The set of nozzles required by the image to be printed
The droplet is ejected onto a position 19. Launch the set of B nozzles
At the moment of firing, the set of C nozzles
At a distance 21 of 70.56 μm behind the
And the set of D nozzles is
Located at a position 23 behind a distance of 141.11 μm
You. Prior to firing the set of C nozzles, the head 10
Moved in the fast scanning direction F by a distance of 14.11 μm.
You. The set of C nozzles depends on the image to be printed.
The droplet is ejected onto a required position 25. C nozzle
At the moment of firing, the set of D nozzles is
At a position 27 at a distance of 70.56 μm behind the set
Be placed. Prior to firing the set of D nozzles,
In the high-speed scanning direction F, a distance of 14.11 μm
Be moved. The set of D nozzles should be printed
The droplet is ejected on a required position 29 according to the image. At the moment of firing the set of D nozzles,
The set of A nozzles is before the set of D nozzles 211.
Located at a position 31 at a distance of 67 μm and the B nozzle
Is 141.11 μm in front of the set of D nozzles
Of the nozzle C and the set of nozzles C
G is at a distance of 70.56 μm before the set of D nozzles
Is disposed on the device 35. Before firing of the set of A nozzles
The head 10 is 14.11 μm in the high-speed scanning direction F.
Is moved over the distance of. The set of A nozzles is printed
Eject a drop onto the required position 37 according to the image to be done
You. At the moment of firing the set of A nozzles, the B nozzle
The set of 70.56μ behind the set of A nozzles
It is located at a position 39 at a distance of m. The set of B nozzles
Before firing, the head 10 moves one time in the fast scanning direction F.
Moved over a distance of 4.11 μm. The set of B nozzle
Is placed on the required position 41 depending on the image to be printed.
Inject drops. The moment of firing the set of B nozzles
In addition, the set of C nozzles is behind the set of B nozzles.
It is located at a position 45 at a distance of 70.56 μm. C nose
Prior to firing the set of heads, the head 10
Moved in direction F over a distance of 14.11 μm. C nose
The set of files must be in the required position depending on the image to be printed.
The droplet is ejected on the table 47. Fired that set of C nozzles
At the moment, the set of D nozzles becomes the set of C nozzles
At a position 49 behind a distance of 70.56 μm
You. Prior to firing the set of D nozzles, the head 10
Moved in the fast scanning direction F by a distance of 14.11 μm.
You. The set of D nozzles depends on the image to be printed.
The droplet is ejected onto a required position 51. The above printing scheme continues in the same way.
Be killed. In the next ABCD cycle, all drops
As you can see, they lie on parallel straight lines in the slow scan direction
But each straight line is in each of the set of nozzles A, B, C, D
Contains printed dots. In the slow scanning direction
The distance between the two straight lines in the high-speed scanning direction is about 25.4 mm
/ (C. Head type) = 25.4 mm / (5.90)
｛= 1 / (5.90) inch｝ = 56.44 μm
It is about 11.7165 dpm (450 dpi)
Indicates that the image is being printed. FIG. 7 shows an example of an input that can be used in the present invention.
A very simplified schematic perspective view of the jet printer 20
It is. The printer 20 has a base 31 and a carriage set.
Solid 32, step motor 33, said step motor
A drive belt 34 driven by the
A guide rail assembly 36 for the carriage assembly 32;
No. The carriage assembly 32 has a plurality of nozzles.
Print head 10 is installed. Also the print
The head 10 may include one or more ink carriages or any
A suitable ink supply system may be included. One page
Par 37 is supported by a feed mechanism (not shown)
On the scanning 38 in the low-speed scanning direction. The carriage
The assembly 32 is driven by the step motor 33.
Guide rail assembly by the action of the drive belt 34
It is moved along the body 36 in the fast scan direction. FIG. 8 shows a print head 10 according to the present invention.
Printer, an example of a control system for use in a computer
It is a block diagram of the electronic control system of No.-20. The
The linter 20 receives a signal from the host computer 30.
Buffer arm for receiving print files in ohms
Molly 40, an image for storing printing data
The image buffer 42 and the overall operation of the printer 10
And a printer controller 60 for controlling the operation. The printer
-The controller 60 includes a carriage assembly drive motor
High speed scanning driver 62 for paper feed dry
Low-speed scanning driver 64 for
A head driver 44 for the lint head 10 is connected.
ing. Optionally, the interlacing of the present invention
And control interstitial printing behavior
Data store 70 for storing parameters
There is. The host computer 30 is, for example,
Powered by Microsoft Corporation (Microsoft Corp. USA)
Windows 98 (Windows 98) memory and
Intel, United States with Graphical Interface
Pentium supplied by Intel Corporation (Intel Corp. USA)
Having a Pentium III microprocessor
-Some suitable program, such as a personal computer
It may be a possible computing device. The printer control
The unit 60 includes a computing device, for example, a microprocessor.
For example, it is a microcontroller
There may be. In particular, it is a programmable printer
Controllers such as programmable array logic (Pr
ogrammable Array Logic) ｛PAL｝,
Programmable Logic A
rray), programmable gate array (Programmable G)
ate Array), especially field programmer gateways
Ray (Field Programmable Gate Array) @ FP
-Programmable digital programming such as FPGA (FPGA)
It may include a magic element. Use of the FPGA
For example, down the necessary settings of the FPGA
Loading (downloading) the printer
Enables the next programming of the device. The user of the printer 20
In the data store 70 to modify the operation of the
Can be set to an optional value. The user
The value is set by the menu console 46 on the printer 20.
Can be set in the data store 70. Instead, this
These parameters are read from the host computer 30, for example.
Data entry by manual entry via the keyboard.
It may be set in the tore 70. For example, by the user
Host based on the data specified and entered.
Printer driver for computer 30 (not shown)
I) are various parameters that define the printing operation.
Data stores 70, such as the solution
To write to the printer controller 60 to write in
Send. One aspect of the present invention is that the printer controller 60 is
Configurable parameters stored in data store 70
By controlling the operation of the printer head 10 according to
is there. Based on these parameters, the printer
The controller controls the program stored in the buffer memory 40.
Read the necessary information contained in the linting data,
Control signals are sent to the drivers 62, 64 and 44.
In particular, the controller 60 prints the image on the printing medium.
Suitable for dot matrix printers
The control unit controls the printing of the image
At least one set of interpenetratingly printed images
Software or hardware to control
Step and software or hardware for setting the resolution.
Hardware means. The controller controls the resolution independently.
It may be used to set it upright. The controller also
Each interpenetrating printing step and / or each
The step of tar lace is performed at the appropriate resolution.
The printing so that it is the path of the
It is adapted to control the operation of the head 10. the above
As described, the printing head is controlled by the controller.
It has an array of marking elements below. For example, the control
The speed of the head in the fast scan direction for a particular resolution
And the firing sequence of the staggered nozzle is controlled
It may be adapted to be For example, the printing data is
For each color component stored in the buffer memory 30
Bitmap (bit map for each color component)
In order to obtain image data in the form,
Understood. In response to a control signal from the printer controller 60,
The head driver 44 adjusts the required resolution.
The speed of the printhead 10 and the noise above it to achieve
Designated to drive an array of slurs (including multiples)
From the image buffer memory 52 depending on the resolution
The color component image data is read. As indicated above, the controller 60 is
It may be programmable, e.g.
It may include sir or FPGA. The present invention
According to the embodiment, the printer of the present invention provides various resolutions.
It may be programmed to serve. For example, the pudding
The basic model of the monitor offers a choice of only one resolution
Good. The microprocessor or the FP of the controller 60
Updates in the form of programs downloaded into GA
Upgrade is an additional selection feature, for example,
A number of resolutions may be provided. Therefore, the present invention calculates
To perform any of the functions of the method of the present invention when executed on a device.
Includes computer program products offered. Furthermore, the book
The invention provides a computer readable form for the computer.
Originally when memorized product and executed on computing device
Seedrom (CD) performing at least one of the methods of Ming
-ROM) or diskette (diskette)
Including the rear. Today, such software is available for download.
On the Internet or company intranet
Therefore, the present invention relates to the printing of the present invention.
Inking computer products in local or wide area
Network (localor wide area network)
Including The computing device is a microprocessor and
And one of FPGA. The data store 70 is a digital store known to those skilled in the art.
Any suitable device for storing data
For example, a register or a set of registers
RAM, RAM, EPROM or solid note
Memory devices, such as Lee. The present invention has been described with reference to the preferred embodiments.
Although described and described, various changes have been made in form and detail.
Changes or modifications may be made without departing from the scope and spirit of the invention.
Will be understood by those skilled in the art. example
To implement the printed embodiment described above.
The preparation of the printing file is done by the host computer.
30, the printer 20 may simply be
Slave device of the host computer 30
device) and print according to this file.
No. Therefore, the present invention is based on the printing scheme of the present invention.
Performed by software on the host computer and corrected
Instructions from the host computer without
Being printed on a printer that performs
In. Therefore, the present invention relates to the printing head.
Running on the computing device associated with the printing head
Provide any function of the method according to the invention when performed
Contains a computer program product and
A programmable computing device is included in the printer
Alternatively, the programmable device may be a computer
Data or computer systems, such as printers
Can be a connected local area network
No. Even if the printer is a network printer
Good. Further, the present invention provides a machine-readable form.
Storing the computer product and a data carrier
The program stored above is executed on the computing device
Can perform at least one of the methods of the present invention when
-Includes a data carrier such as ROM or diskette.
The computing device is a personal computer or a workstation.
May be included. Today, such software
A. Internet or company intranet for download
Often provided on the net, the present invention
The printing computer products of Ming
Including transmitting over a wide area network
You. The features and aspects of the present invention will be described below.
It is. 1. A vertical axis in the first direction (S);
Of marking elements (A, B, C; A, B, C, D)
Marking element having at least one group (G)
(A, B, C; A, B, C, D)
This is a method of driving the lint head (10).
Group (G) marking elements (A, B, C; A,
B, C, D) are second directions perpendicular to the first direction (S).
(F) Stagger distance (D1) or more to each other
The printhead (10) has a reference firing frequency.
The stagger distance (D) multiplied by a number (Fref)
In order to drive at a reference speed (Vref) equal to 1)
Each marking element of the group is
The printhead is capable of firing with a firing frequency pulse.
(10) The marking element (A, B, C; A, B,
C, D) are criteria for printing images at the first resolution
It is intended to be fired according to the firing order,
Print head (10) prints the same image at different resolutions.
Operating at an operating speed different from the reference speed
Said method. 2. Marking n in one group (G)
There is a switching element (A, B, C; A, B, C, D).
Operation speed is equal to reference speed / (nX + 1), where X is 0
An integer greater than or equal to 0, the second resolution
The marking elements (A, B, C; A, B, C,
The firing order of D) is the reference firing order (ABC; ABCD)
2. The method according to the above 1, wherein the method is the same as the above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a printhead having staggered marking elements as known in the prior art. FIG. 2 schematically illustrates the ABC printing scheme of the printhead of FIG. 1; FIG. 3 is a front view of a printhead having two arrays of marking elements, each having a first resolution, the nozzle array being positioned such that the combined resolution is equal to twice the first resolution. FIG. 4 schematically shows a printhead consisting of two staggered nozzle arrays. FIG. 5 is a printing scheme for 12.5% interpenetrating printing of an embodiment of the present invention. FIG. 6 schematically illustrates an ABCD printing scheme of an embodiment of the present invention for a printing head having four marking elements in a group. FIG. 7 is a highly schematic representation of an ink jet printer for use with the present invention. FIG. 8 is a schematic representation of a printer controller of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 10 Print head 11 Position 12 Marking element or nozzle 13, 14, 15 Position 16 Straight line in slow scan direction 17, 18, 19 Position 20 position or Printer 21, 22, 23 Position 24 Straight line 25 in slow scan direction , 26, 27, 28, 29 Position 30 Straight line in slow scan direction or host computer or receiving buffer memory 31 Position or base 32 Position or carriage assembly 33 Position or step motor 34 Position or drive belt 35 Position 36 Position or guide rail Assembly 37 Position or paper 38 Straight line in slow scan direction or support 39 Position 40 Position or buffer memory 41 Position 42 Position or image buffer 43 Straight line in slow scan direction 44 Head driver 45 Position 46 Position or menu console 47,4 9 position 50 nozzle plate 51 position 52, 54 nozzle array 60 printer controller 62 position or fast scan driver 64 position or slow scan driver 66 position 68 position or paper feed driver 70 position or data store 72, 74, 76, 78, 80 , 82, 84, 86, 8
8, 90, 92, 94, 96, 98, 100, 102,
104, 106, 108, 110 Position 111 Straight line 112 in low-speed scanning direction Position 113, 114 Straight line 116, 118, 120, 122, 124 in low-speed scanning position 130 Print head 132, 134 Nozzle array 764 Nozzles A, B, C, D Nozzle D1 Stagger distance G Group of nozzles F High-speed scanning direction S Low-speed scanning direction

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Patrik van den Bergen             Belgian Be 2640 Malt Cell Septes             Trat 27 Agfa-Gevuert F term (reference) 2C056 EA04 EC11 EC12 EC31 EC34                       EC78

Claims (1)

Claims 1. A longitudinal axis in a first direction (S), and at least one group (G) of marking elements (A, B, C; A, B, C, D). A method for driving a print head (10) comprising an array of marking elements (A, B, C; A, B, C, D) comprising a group (G) of marking elements (A, B, C, D). C; A,
B, C, and D) are staggered with respect to each other in a second direction (F) perpendicular to the first direction (S) by a stagger distance (D1) or more, and the print head (10) has a reference firing frequency (Fref). ) Multiplied by the stagger distance (D
It is intended to be driven at a reference speed (Vref) equal to 1), wherein each marking element of the group is fireable at each reference firing frequency pulse and the marking element (A, B) of the printhead (10). , C; A, B,
C, D) are intended to be fired according to a reference firing order to print an image at a first resolution, wherein the printhead (10) is adapted to print the same image at a different resolution with the reference speed. The method characterized by being operated at different operating speeds.