CN100506531C - Stencil printing device - Google Patents
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- CN100506531C CN100506531C CNB2006100515056A CN200610051505A CN100506531C CN 100506531 C CN100506531 C CN 100506531C CN B2006100515056 A CNB2006100515056 A CN B2006100515056A CN 200610051505 A CN200610051505 A CN 200610051505A CN 100506531 C CN100506531 C CN 100506531C
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Abstract
The disclosed porous printing device for high-quality image comprises: controlling the record device to achieve the relation formula as Sp= (Sf-Sk)/Sf, where Sp<=0.0143*X<SUP>0.2780 </SUP>, wherein the said area Sf refers to thermoplastic resin faced to the record device perforated by the record device; SK refers to the thermoplastic resin opposite to the record device perforated by the record device; X refers to the perforated hole number in every square inch.
Description
Technical field
The present invention relates to a kind of stencil printing method, its be will make the thermal-sensitive porous body paper (being designated hereinafter simply as " master ") of version be wrapped on the outer peripheral face of printing cylinder, push recording medium printing with pressing mechanism such as pressure roller or coining mechanism.
Background technology
In hole plate print device, be master to be wrapped in inside have on the outer peripheral face of porous printing cylinder (plate cylinder) of black feed mechanism, and utilize the outer peripheral face of being arranged to respect to printing cylinder to contact the pressing mechanisms such as pressure roller that leave freely, recording mediums such as printing are pressed on the printing cylinder, print, described master is based on the data that read data or receive from external connection apparatus of original copy, is made a plate by the first-class recording equipment perforation of temperature-sensitive.
By push (coining) that is undertaken by pressing mechanism, the China ink that supplies on the cylinder inner peripheral surface oozes out by cylinder aperture portion, master perforated portion, transfers on the printing and forms the printing image.
As master, usually adopt be with bonding agent engage with the thermoplastic resin diaphragm, with the porous supporting mass that forms by Japan paper etc. and must laminated construction.
Different according to the heat state of the heating portion of recording equipment and resolution ratio, molten thermoplastic resin's diaphragm and the perforation that forms links to each other sometimes if adjacent perforation links to each other, then can hinder becoming more meticulous of each point, and picture quality is reduced.
As patent documentation 1,2,3 etc. put down in writing, in the past, carried out being intended to improving the improvement of the independent of perforation.That is, in the past, intrinsic " independent perforation=good printing state " this understanding.
This perforation state, thermoplastic resin diaphragm 61a-1 among Figure 13 of the cross sectional shape of observing the expression thermal-sensitive porous body paper from recording equipment one side along the blank direction of arrow in the face of the face (hereinafter referred to as " F " face) of recording equipment the time, with STA representation shown in Figure 12.Among Figure 13, Reference numeral 61a-2 represents the porous supporting mass.
Wish that the big or small Lm of penetration hole diameter and Ls are respectively more than 45% below 80% with respect to dot spacing Pm, Ps, perforation field S is that sweep span Pm and Ps long-pending is more than 20% below 50%.
Patent documentation 1: the spy opens the 2001-322228 communique
Patent documentation 2: the spy opens the 2001-322229 communique
Patent documentation 3: the spy opens the 2001-322230 communique
As described above, in the past, about the perforation state the improvement technology multiple motion is arranged.But technology in the past nearly all is conceived to the separation property (independence) of boring a hole, and the final output of not considering printing equipment is the stability of print image quality.
In most hole plate print devices in the past, character image or the shared large percentage of (ベ ) image on the spot, if the perforation state of aforementioned F face is the state that separates, promptly independently bores a hole, even it is discrete from the China ink amount that a drilling point is supplied with, mostly also can be capped by transfer from the China ink supplied with other drilling points of this drilling point adjacency, even, do not have any problem so not too pay attention to transfer amount discrete of the China ink supplied with from drilling point portion yet.
Therefore, as previously mentioned,, and select to get final product with its suitable China ink as long as stipulate the state of boring a hole with respect to the size of dot spacing according to penetration hole diameter or perforation field.
But present situation in recent years is, because high becoming more meticulous and the popularizing of digital device, the image of having sneaked into photograph image increases, and popular colored printing, compared with the pastly pursues 1 demonstration in the unit more.
But, be still now under the discrete situation of the transfer amount of the China ink of not considering to supply with from drilling point, under controlled condition, thermal-sensitive porous body paper is bored a hole, and make China ink transfer to printing printing from printing cylinder based on above-mentioned cognition (understanding) in the past.
Therefore, though for the foregoing reasons, what problem image and the image repeatability of putting intensive portion do not have on the spot, but the position corresponding with photograph image and with the corresponding plate-making pattern of photograph image under in the printed article of making a plate etc., have the discrete bigger problem of repeatability.
Summary of the invention
Main purpose of the present invention is to provide a kind of stencil printing method, also can reduce the discrete of repeatability in the contour image that becomes more meticulous of photograph image, can obtain high quality graphic.
To achieve these goals, technical scheme 1 described invention is a kind of stencil printing method, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that, change resolution ratio and to the energy quantity delivered of aforementioned recording equipment, obtain area in the face of being bored a hole by aforementioned recording equipment on the face of aforementioned recording equipment with respect to the aforementioned thermoplastic resin diaphragm, from aforementioned area, deduct the aforementioned thermoplastic resin diaphragm with in the face of the shared area ratio of value behind the area of being bored a hole by aforementioned recording equipment on the face of the opposite side of face of aforementioned recording equipment, aforementioned area under each condition is compared pictorialization than dispersing with its printing, from aforementioned chart, extract the discrete value of printing that can suppress between each resolution ratio out, obtain count approximation relation formula with aforementioned area ratio of boring a hole of aforementioned recording equipment, based on aforementioned area ratio and aforementioned approximation relation formula, control aforementioned recording equipment.
Sp=(Sf-Sk)/Sf (formula 1)
Sp ≦ 0.0143 * X
0.2780(formula 2)
Wherein said area be meant the aforementioned thermoplastic resin diaphragm in the face of the face of the opposition side of the face of aforementioned recording equipment area by aforementioned recording equipment perforation,
Sp: area ratio;
Sf: in the face of the area of the perforated portion face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Sk: in the face of the area of the perforated portion face of the opposition side of the face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Boring a hole in the X:1 square inch counted.
Technical scheme 3 described inventions are a kind of stencil printing methods, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that, change resolution ratio and to the energy quantity delivered of aforementioned recording equipment, obtain facing on the face of aforementioned recording equipment with respect to the aforementioned thermoplastic resin diaphragm by the main scanning direction diameter of the perforated portion after the aforementioned recording equipment perforation, from aforementioned main scanning direction diameter, deduct the aforementioned thermoplastic resin diaphragm with in the face of on the face of the opposite side of face of aforementioned recording equipment by the shared main scanning ratio of value behind the main scanning direction diameter of the perforated portion after the aforementioned recording equipment perforation, aforementioned main scanning under each condition is compared pictorialization than dispersing with its printing, from aforementioned chart, extract the discrete value of printing that can suppress between each resolution ratio out, obtain count approximation relation formula with aforementioned main scanning ratio of boring a hole of aforementioned recording equipment, based on aforementioned main scanning ratio and aforementioned approximation relation formula, control aforementioned recording equipment.
Technical scheme 4 described inventions are a kind of stencil printing methods, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that, control aforementioned recording equipment, make with respect to the aforementioned thermoplastic resin diaphragm in the face of from aforementioned main scanning direction diameter, deducting the shared ratio of value behind the following diameter the main scanning direction diameter of the perforated portion of face after aforementioned recording equipment perforation of aforementioned recording equipment, and the relation between boring a hole in 1 square inch counted, satisfy following formula:
Lmp=(Lmf-Lkm)/Lmf (formula 3)
Lmp ≦ 0.0009 * X
0.4565(formula 4)
Wherein said diameter is meant the main scanning direction diameter in the face of the face of the opposition side of the face of the aforementioned recording equipment perforated portion after by aforementioned recording equipment perforation of aforementioned thermoplastic resin diaphragm,
Lmp: the penetration hole diameter ratio of main scanning direction;
Lfm: in the face of the main scanning direction diameter of the perforated portion face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Lkm: in the face of the main scanning direction diameter of the perforated portion face of the opposition side of the face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Boring a hole in the X:1 square inch counted.
Technical scheme 6 described inventions are a kind of stencil printing methods, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that, control aforementioned recording equipment, make with respect to the aforementioned thermoplastic resin diaphragm in the face of from aforementioned sub scanning direction diameter, deducting the shared ratio of value behind the following diameter the sub scanning direction diameter of the perforated portion of face after aforementioned recording equipment perforation of aforementioned recording equipment, and the relation between boring a hole in 1 square inch counted, satisfy following formula:
Lsp=(Lfs-Lks)/Lfs (formula 5)
Lsp ≦ 0.0009 * X
0.4565(formula 6)
Wherein said diameter is meant the sub scanning direction diameter in the face of the face of the opposition side of the face of the aforementioned recording equipment perforated portion after by aforementioned recording equipment perforation of aforementioned thermoplastic resin diaphragm,
Lsp: the penetration hole diameter ratio of sub scanning direction;
Lfs: in the face of the sub scanning direction diameter of the perforated portion face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Lks: in the face of the sub scanning direction diameter of the perforated portion face of the opposition side of the face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Boring a hole in the X:1 square inch counted.
According to technical scheme 7 described inventions, in each described stencil printing method, it is characterized in that in technical scheme 1 to 6 aforementioned recording equipment is a thermal head, described thermal head has a plurality of heaters of arranging along main scanning direction.
According to technical scheme 8 described inventions, in each described stencil printing method, it is characterized in that in technical scheme 1 to 6 aforementioned thermal-sensitive porous body paper only is made of the thermoplastic resin diaphragm basically.
According to technical scheme 1 or 2 described inventions, because can be with suppressing lessly to the discrete of bond area of the China ink of printing transfer, so can obtain stay-in-grade printing image from perforated portion.
According to technical scheme 3 or 4 described inventions, because can be with suppressing lessly to the China ink that printing shifts to the discrete of adhesion amount of main scanning direction, so can obtain stay-in-grade printing image from perforated portion.
According to technical scheme 5 or 6 described inventions, because can be with suppressing lessly to the China ink that printing shifts to the discrete of adhesion amount of sub scanning direction, so can obtain stay-in-grade printing image from perforated portion.
According to technical scheme 7 described inventions since with thermal head as recording equipment, so compare, can suppress the cost of recording equipment self with recording equipment such as laser instrument, again because control and to carry assembly also fairly simple, so can reduce installation cost.
According to technical scheme 8 described inventions, because thermal-sensitive porous body paper in fact only is made of the thermoplastic resin diaphragm, so at China ink when printing cylinder is transferred to printing via thermal-sensitive porous body paper, can not be subjected to the influence of the supporting mass that forms by Japan paper or Japan paper and PET (PETG) or PET monomer, so can further improve the discrete effect of adhesion amount of the China ink that inhibition shifts to printing.
Description of drawings
Fig. 1 is the summary front view of the hole plate print device in an embodiment of the present invention.
Fig. 2 is the figure of the perforated portion of expression thermoplastic resin diaphragm, is from the vertical view in the face of the recording equipment unilateral observation (a), (b) is the cutaway view of D-D line in (a).
Fig. 3 is the figure of the different perforated portion of the condition of expression thermoplastic resin diaphragm, is from the vertical view in the face of the recording equipment unilateral observation (a), (b) is the cutaway view of D-D line in (a).
Fig. 4 is the figure of the different perforated portion of the condition of expression thermoplastic resin diaphragm, is from the vertical view in the face of the recording equipment unilateral observation (a), (b) is the cutaway view of D-D line in (a).
Fig. 5 is the figure of the different perforated portion of the condition of expression thermoplastic resin diaphragm, is from the vertical view in the face of the recording equipment unilateral observation (a), (b) is the cutaway view of D-D line in (a).
Fig. 6 is the area ratio under each resolution ratio of expression and prints the chart of the relation between the discrete ratio.
Fig. 7 is the main scanning diameter ratio under each resolution ratio of expression and prints the chart of the relation between the discrete ratio.
Fig. 8 is the subscan diameter ratio under each resolution ratio of expression and prints the chart of the relation between the discrete ratio.
Fig. 9 is counting and the area chart of the relation of penetration hole diameter ratio when of can boring a hole of expression.
Figure 10 is the figure of the printing state under the expression condition 1, (a) is the partial enlarged drawing of (b).
Figure 11 is the figure of the printing state under the expression condition 4, (a) is the partial enlarged drawing of (b).
Figure 12 is the chart that expression is used to obtain the electrical pulse of same perforations area and adds the relation between the electric power.
Figure 13 is the cutaway view of thermal-sensitive porous body paper.
Figure 14 be desirable in the past perforated portion, from vertical view in the face of the recording equipment unilateral observation.
The specific embodiment
Below, based on Fig. 1～Figure 12, the 1st embodiment of the present invention is described.
At first, based on Fig. 1, the overall structure of the hole plate print device of present embodiment and the summary of porous printing process are described.
Top at apparatus main body 50, be provided with the manuscript reading section 80 that has to advance automatically original text (ADF) function, thereunder central portion is provided with printing cylinder portion 100, described printing cylinder portion 100 has porous printing cylinder (plate cylinder) 101. right side above printing cylinder portion 100, be provided with automatic platemaker 90, left side above printing cylinder portion 100, be provided with composing device 70. again, below automatic platemaker 90, be provided with paper feed 110, below printing cylinder portion 100, be provided with coining portion 120, the row's of being provided with paper portion 130. below composing device 70
Below, the printing action of the hole plate print device of said structure is described.
At first, original copy 60 mountings that will have the image that will print are on the not shown original copy mounting table on the top that is configured in manuscript reading section 80, and the plate-making of pushing on the not shown guidance panel begins key. be accompanied by pressing of this plate-making beginning key, at first implement the composing operation. promptly, under this state, on the outer peripheral face of the printing cylinder 101 of printing cylinder portion 100, the use original edition 61b. that uses is installed still in preceding printing
Use original edition 61b 72a, 72b to be carried and discharge in composing box 74 along arrow Y1 direction by the composing conveyer belt, peel from the outer peripheral face of printing cylinder 101 like this and finish the composing operation, described composing conveyer belt to 72a, 72b volume hang over be disposed at the composing stripper roll to the composing roller in the left side of 71a, 71b to 73a, 73b, and the composing stripper roll between 71a, the 71b. at this moment, printing cylinder 101 continues rotation counterclockwise. and after this, the use original edition 61b of being stripped from discharge is compressed plate 75 compressions in the inside of composing box 74.
With the composing operation concurrently, carrying out original copy in manuscript reading section 80 reads. be positioned in original copy 60 on the not shown document board by separate roller 81, the place ahead original copy conveying roller is to 82a, 82b, and rear original copy conveying roller is to 83a, 83b rotation separately, and behind arrow Y2, be transferred along arrow Y3 direction earlier, read for exposure. at this moment, when original copy 60 is many, under the effect that separates scraper plate 84, to carry one by one from nethermost original copy. the image of original copy 60 reads following carrying out: original copy 60 is transported to holds on the sheet glass 85, make the reverberation reflection on the surface that comes from the original copy 60 that illuminates by fluorescent lamp 86 with mirror 87, scioptics 88 and inciding in the imageing sensor 89 that constitutes by CCD (charge-coupled image sensor).
Adopt the known formula original copy that dwindles to read mode and carry out reading of original copy 60, original copy 60 after image is read is discharged on the original copy pallet 80A. opto-electronic conversion in imageing sensor 89 and the signal of telecommunication be imported in not shown analog/digital (A/D) conversion baseplate in the apparatus main body 50, convert data image signal to.
Read action concurrently with this image, based on the data signal change image information make a plate and for a version operation. the master 61 of not plate-making that is set in the web-like on the regulation position of automatic platemaker 90 is by after become volume state to be pulled out, by air roll 92, and jockey pulley the rotation of 93a, 93b is transported to the downstream of transport path, described air roll 92 is pressed against across master 61 on the thermal head 91 as recording equipment.
With respect to the master 61 that transports like this, wire is arranged in a plurality of small heat generating resistor on the thermal head 91, correspond respectively to data image signal that never illustrated A/D conversion baseplate transports and optionally heating, the thermoplastic resin diaphragm of the master 61 that contacts with the heat generating resistor of heating is melted perforation.
Like this, by corresponding to image information, master 61 regioselective fusion perforation arranged, and image information is write as the perforation figure.
The front end that has write the plate-making original edition 61a of image information is passed in and out to the peripheral part side of printing cylinder 101 94a, 94b by confession version roller, by not shown guiding parts direct of travel is changed downwards, and vertical illustrated for opening of the printing cylinder 101 of version under the location status master clamper 102 (shown in the dotted line).This moment, printing cylinder 101 was removed use original edition 61b by the composing operation.
The front end of plate-making original edition 61a certain opportunity by 102 clampings of master clamper after, printing cylinder 101 is along A direction (clockwise direction) rotation among the figure, and the original edition 61a that will make a plate is rolled onto on its outer peripheral face.The rearward end of plate-making original edition 61a cuts into certain-length by cutter 95.
After plate-making original edition 61a is wrapped on the outer peripheral face of printing cylinder 101, plate-making and finish for the version operation, printing process begins.At first, by paper supply roller 140, with in the printing 62 that overlays on the feedboard for paper 51 as sheet-shaped recording medium uppermost one along arrow Y4 direction, send 142 towards the resistance roller, so by the resistance roller to 142 to deliver to coining portion (image transfer section position) 120 opportunity with the synchronous regulation of the rotation of printing cylinder portion 100.The printing of sending 62 enters into printing cylinder 101 and as after between the pressure roller 103 of pressing component, the pressure roller 103 that leaves the outer peripheral face below of printing cylinder 101 is moved upward by not shown coining applying mechanism, thereby printing 62 is pressed against package on the plate-making original edition 61a of the outer peripheral face of printing cylinder 101.
Like this, China ink oozes out from the aperture portion of printing cylinder 101 and the perforation figure portion (not shown) of plate-making original edition 61a, and this China ink that oozes out is transferred on the surface of printing 62, forms the printing image.Sometimes will supply the first impression of version after the operation to be called locks up.
Interior all sides at printing cylinder 101, supply with China ink from black supply pipe 104 to China ink delay portion 107, and China ink is supplied to interior all sides of printing cylinder 101 by ink roller 105, described black delay portion 107 is formed between ink roller 105 and the doctor roll 106, described ink roller 105 on one side to the direction identical with the direction of rotation of printing cylinder 101, synchronously rotate on one side with the rotary speed of printing cylinder 101 and to contact with the inner peripheral surface rolling.
The printing 62 that has formed the printing image in coining portion 120 is peeled from printing cylinder 101 by row's paper separation claw 114, be adsorbed with fan 118 and attract, and by being rotated counterclockwise of conveyer belt 117 and with this conveyer belt 117 closely, such shown in arrow Y5, carry to row's paper portion 130, discharge successively and the row's of overlaying paper platform 52 on, described conveyer belt 117 volumes hang over absorption row paper inlet roller 115 and adsorb between the delivery area door roller 116.Like this, finish so-called examination seal.
Then, with not shown ten key the printing number is set, presses after not shown printing begins key, by with the same operation of above-mentioned examination seal, repeat and paper supply, printing, each operation of row's paper of setting the corresponding number of times of printing number, whole operations of porous printing finish.
Then, be conceived to the perforation state of master 61, detail of the present invention described.
In the past, think plate-making original edition 61a the perforation state as shown in figure 14, but when observing the F face from the top, actual perforation state is a state shown in Figure 2.
As the cutaway view of the D-D line among Fig. 2 (a), be shown in Fig. 2 (b), be the mortar shape, promptly, perforation (fusion) area of thermoplastic resin diaphragm 61a-1 is maximum area (Sf) on the F face, along with close K face, perforation field diminishes gradually, on the K face, the perforation field of thermoplastic resin diaphragm 61a-1 reaches minimum area (Sk). and among Fig. 2, Reference numeral 61a-2 represents supporting mass.
Therefore, think: printed article picture quality produces discrete reason and is, and is discrete to the transfer amount generation of printing 62 from the China ink that printing cylinder 101 is supplied with, and the discrete reason of above-mentioned transfer amount is, the state that China ink shifts from each drilling point produces discrete, has launched research based on this consideration.
Its result distinguishes that according to the difference of perforation state described later, these disperse and there are differences.
Make a plate under various conditions, confirm its perforation state, the result distinguishes and has state as shown in figure 3, promptly, the perforation field of thermoplastic resin diaphragm 61a-1 promptly that Sf is identical on the F face of the area of Sf ' and Fig. 2, but the perforation field of thermoplastic resin diaphragm 61a-1 is that Sk is different on the area of Sk ' and the K face.
In other words, according to the difference of plate-making condition, the ratio that the area S at position shown in Fig. 3 (a) bend (not being the expression cross section) accounts for area Sf produces difference.
Again, penetration hole diameter is also the same with perforation field, and the ratio that Lm and Lm ', Ls and Ls ' account for Lfm and Lfs produces difference.
In addition, difference according to the kind of thermal-sensitive porous body paper, sometimes shown in Fig. 4 (figure that is equivalent to Fig. 2) and Fig. 5 (figure that is equivalent to Fig. 3), in supporting mass one side, thermoplastic resin diaphragm 61a-1 is the shape of falling the mortar. still, the inventor according to experimental verification its influence exist hardly, can't make the discrete generation difference of black transfer amount owing to the difference (whether also being the mortar shape) of this perforation state in supporting mass one side.
Below, based on Fig. 2, illustrate according to experimental verification because the difference of above-mentioned perforation state makes discrete this true content of difference that produces of print image quality.
Will be with respect to the perforation field Sf of thermoplastic resin diaphragm 61a-1 on the F face, the shared ratio of area S that the perforation field Sf of thermoplastic resin diaphragm 61a-1 deducts the part behind the perforation field Sk of thermoplastic resin diaphragm 61a-1 on the K face from the F face is made as Sp, and the difference of checking Sp is to the influence degree of printed article; Will be with respect to penetration hole diameter Lfm and the Lfs of thermoplastic resin diaphragm 61a-1 on the F face on each scanning direction, from aforementioned penetration hole diameter Lfm and Lfs deducts the penetration hole diameter Lkm of thermoplastic resin diaphragm 61a-1 on the K face and the shared ratio that respectively is worth behind the Lks is made as Lmp and Lsp, the influence degree of the difference of checking Lmp this moment and Lsp.
In addition, this confirmatory experiment obtains different perforation states by the pulse width (energy service time) that changes to thermal head 91 energisings, in advance obtain the electrical pulse width by experiment and add relation between the electric power, so that make the perforation field Sf of thermoplastic resin diaphragm 61a-1 on the F face become identical state, experimentize then.
Main experiment condition and checking order are as described below.
The lettering cycle: 10ms/1
Thermal-sensitive porous body paper: Satelio master
Thermal head: A3-600dpi, A3-400dpi, B4-300dpi
Pulse width: 5 grades variable
Add electric power: be adjusted into the value corresponding (be adjusted to and make Sf equate) with each pulse width
China ink: Satelio China ink model 400
Printing: ink-jet printer paper
The checking order: the thermal-sensitive porous body paper after will making a plate under these conditions is wrapped on the printing cylinder, print with SatelioA-400, the printing image pattern that obtains with observation by light microscope, in view data input PC, and the image analysis software WinROOF that makes with three paddy business (strain) resolves.
Table 1 expression experimental result. each is discrete to be the value that the discrete ratio of condition 1 is made as 1 o'clock than what put down in writing.
Though the value of considering can change a little because of the China ink that uses is different, the tendency of discrete ratio is constant, so select to be suitable for most the China ink of native system as the China ink that uses in this experiment.
Again, owing to the influence degree that only is conceived to bore a hole, so select China ink to ooze the few paper of profit as printing.
Fig. 6 represent area under each resolution ratio than and printing discrete than between relation. as can be seen from Figure 6, when area surpassed 300dpi=34%, 400dpi=40%, 600dpi=50% than Sp, the recruitment of the discrete ratio of printing increased (result 1) respectively.
Fig. 7 represent main scanning diameter under each resolution ratio than and printing discrete than between relation, Fig. 8 represent in each resolution ratio the subscan diameter than and printing discrete than between relation.
From Fig. 7 and Fig. 8 as can be known, relation about the penetration hole diameter ratio, main scanning direction and sub scanning direction show identical tendency, when the penetration hole diameter of main scanning direction surpassed 300dpi=16%, 400dpi=21%, 600dpi=30% than the penetration hole diameter of Lmp and sub scanning direction than Lsp, the recruitment of the discrete ratio of printing increased (result 2) respectively.
Based on The above results 1,2, arrangement can suppress the discrete area of printing between each resolution ratio when after the relation of penetration hole diameter ratio, obtain relation shown in Figure 9. promptly, in the relation with the area ratio of counting of can boring a hole, can obtain approximate expression (relational expression): y=0.0143 * X
0.2780, in the relation with the penetration hole diameter ratio of counting of can boring a hole, can obtain approximate expression (relational expression): y=0.0009 * X
0.4565.
Among Fig. 9, if for example the resolution ratio of main scanning and sub scanning direction is: main scanning=600dpi, subscan=600dpi, then boring a hole in 1 square inch to count be 600 * 600=360000[].
Resolution ratio at main scanning, sub scanning direction is under the situation of 400dpi, reference area is 22.6% and 43.5% o'clock printing state than Sp. its result of expression in Figure 10 and Figure 11. and as shown in figure 11, big than the difference that is the printing state between 43.5% time point at area.
Therefore, under the situation of above-mentioned resolution ratio, in order to obtain discrete less printing state, if the relational expression that application drawing 9 obtains consideration wishes that then the area ratio is below 40%.
The condition 1 of table 1 and condition 4 times, so that the corresponding to mode of area Sf of the perforated portion after the perforation of the thermoplastic resin diaphragm of the face that is heated from recording equipment bores a hole, the printing area of the above-mentioned printed article of counting corresponding to identical perforation relatively, as a result, both mean value does not have difference.
But if as described above, area surpasses the value of relational expression shown in Figure 9 than the value of Sp, does not promptly satisfy above-mentioned (formula 2), and then the discrete change of printing state is big.
Equally, if the penetration hole diameter of main scanning direction does not satisfy above-mentioned (formula 4) than the value of Lmp, then the discrete change of printing state is big. and again, if the penetration hole diameter of sub scanning direction does not satisfy above-mentioned (formula 6) than the value of Lsp, then the discrete change of printing state is big.
Therefore, control energy quantity delivered to thermal head 91, above-mentioned to satisfy (formula 1), (formula 2), or satisfy above-mentioned (formula 3), (formula 4), or satisfy above-mentioned (formula 5), (formula 6).
Because the present invention is to be purpose with following content all the time, promptly, suppress discrete when the China ink that printing cylinder sees through the thermal-sensitive porous body paper of having implemented perforation is fixed to printing, so to boring a hole size regulation not itself.
The size of perforation itself as long as cooperate with the characteristic of environment for use and printing etc., and is carried out sensitivity adjustment ordinatedly with various conditions and is got final product.
Again, among the present invention, carry out confirmatory experiment with the example that uses thermal head, and be illustrated. when carrying out this confirmatory experiment, the relation that is used to obtain the electrical pulse of identical perforation state and add between the electric power is studied, obtained relation shown in Figure 12.
Draw from Figure 12,, add power value exponential curve formula ground and increase,, do not wish to shorten electrical pulse so consider from the electric durability aspect of thermal head along with pulse width diminishes.
In above-mentioned confirmatory experiment, changing the electrical pulse width and make perforation state generation difference. wherein discrete pulse width than minimum condition 1 is quite little, but area is than also non-vanishing.
The pulse width of condition 1 is further reduced, can make the area ratio approach zero, but in interior possible working range, can not realize in the product life that comprises employed thermal head.
Draw from above, in the hole plate print device that uses thermal head, can not realize that in fact the S of oblique line portion shown in Fig. 2 (a), Fig. 3 (a) is zero situation.
In addition,, can implement perforation and make that the S of oblique line portion is almost nil, but installation cost can increase, and also have the problem of operability aspect utilizing during laser bores a hole.
Illustrative in the present embodiment thermal-sensitive porous body paper is made of thermoplastic resin diaphragm 61a-1 and supporting mass 61a-2, even but use does not have the thermal-sensitive porous body paper that the thermoplastic resin diaphragm of supporting mass forms basically, also can obtain the discrete effect of same inhibition.
Claims (8)
1. stencil printing method, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that
Change resolution ratio and to the energy quantity delivered of aforementioned recording equipment, obtain area in the face of being bored a hole by aforementioned recording equipment on the face of aforementioned recording equipment with respect to the aforementioned thermoplastic resin diaphragm, from aforementioned area, deduct the aforementioned thermoplastic resin diaphragm with in the face of the shared area ratio of value behind the area of being bored a hole by aforementioned recording equipment on the face of the opposite side of face of aforementioned recording equipment, aforementioned area under each condition is compared pictorialization than dispersing with its printing, from aforementioned chart, extract the discrete value of printing that can suppress between each resolution ratio out, obtain count approximation relation formula with aforementioned area ratio of boring a hole of aforementioned recording equipment, based on aforementioned area ratio and aforementioned approximation relation formula, control aforementioned recording equipment.
2. stencil printing method, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that
Control aforementioned recording equipment, the face with respect to the aforementioned thermoplastic resin diaphragm of making in the face of aforementioned recording equipment by the area of aforementioned recording equipment perforation, from aforementioned area, deduct the shared ratio of value behind the following area, and 1 square inch in the relation between counting of boring a hole, satisfy following formula:
Sp=(Sf-Sk)/Sf (formula 1)
Sp ≦ 0.0143 * X
0.2780(formula 2)
Wherein said area be meant the aforementioned thermoplastic resin diaphragm in the face of the face of the opposition side of the face of aforementioned recording equipment area by aforementioned recording equipment perforation,
Sp: area ratio;
Sf: in the face of the area of the perforated portion face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Sk: in the face of the area of the perforated portion face of the opposition side of the face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Boring a hole in the X:1 square inch counted.
3. stencil printing method, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that
Change resolution ratio and to the energy quantity delivered of aforementioned recording equipment, obtain facing on the face of aforementioned recording equipment with respect to the aforementioned thermoplastic resin diaphragm by the main scanning direction diameter of the perforated portion after the aforementioned recording equipment perforation, from aforementioned main scanning direction diameter, deduct the aforementioned thermoplastic resin diaphragm with in the face of on the face of the opposite side of face of aforementioned recording equipment by the shared main scanning ratio of value behind the main scanning direction diameter of the perforated portion after the aforementioned recording equipment perforation, aforementioned main scanning under each condition is compared pictorialization than dispersing with its printing, from aforementioned chart, extract the discrete value of printing that can suppress between each resolution ratio out, obtain count approximation relation formula with aforementioned main scanning ratio of boring a hole of aforementioned recording equipment, based on aforementioned main scanning ratio and aforementioned approximation relation formula, control aforementioned recording equipment.
4. stencil printing method, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that
Control aforementioned recording equipment, make with respect to the aforementioned thermoplastic resin diaphragm in the face of from aforementioned main scanning direction diameter, deduct the main scanning direction diameter of the perforated portion of face after aforementioned recording equipment perforation of aforementioned recording equipment the shared ratio of value behind the following diameter, and 1 square inch in the relation between counting of boring a hole, satisfy following formula:
Lmp=(Lmf-Lkm)/Lmf (formula 3)
Lmp ≦ 0.0009 * X
0.4565(formula 4)
Wherein said diameter is meant the main scanning direction diameter in the face of the face of the opposition side of the face of the aforementioned recording equipment perforated portion after by aforementioned recording equipment perforation of aforementioned thermoplastic resin diaphragm,
Lmp: the penetration hole diameter ratio of main scanning direction;
Lfm: in the face of the main scanning direction diameter of the perforated portion face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Lkm: in the face of the main scanning direction diameter of the perforated portion face of the opposition side of the face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Boring a hole in the X:1 square inch counted.
5. stencil printing method, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that
Change resolution ratio and to the energy quantity delivered of aforementioned recording equipment, obtain facing on the face of aforementioned recording equipment with respect to the aforementioned thermoplastic resin diaphragm by the sub scanning direction diameter of the perforated portion after the aforementioned recording equipment perforation, from aforementioned sub scanning direction diameter, deduct the aforementioned thermoplastic resin diaphragm with in the face of on the face of the opposite side of face of aforementioned recording equipment by the shared subscan ratio of value behind the sub scanning direction diameter of the perforated portion after the aforementioned recording equipment perforation, the scanning of aforementioned auxiliary under each condition is compared pictorialization than dispersing with its printing, from aforementioned chart, extract the discrete value of printing that can suppress between each resolution ratio out, obtain count approximation relation formula with aforementioned auxiliary scanning ratio of boring a hole of aforementioned recording equipment, based on aforementioned auxiliary scanning ratio and aforementioned approximation relation formula, control aforementioned recording equipment.
6. stencil printing method, by recording equipment to the thermal-sensitive porous body paper that the has the thermoplastic resin diaphragm at least plate-making of boring a hole, thermal-sensitive porous body paper after the plate-making is wrapped on the outer peripheral face of printing cylinder, supply with China ink from the inboard of aforementioned printing cylinder, and, recording medium is pressed on the aforementioned printing cylinder and prints, it is characterized in that
Control aforementioned recording equipment, make with respect to the aforementioned thermoplastic resin diaphragm in the face of from aforementioned sub scanning direction diameter, deduct the sub scanning direction diameter of the perforated portion of face after aforementioned recording equipment perforation of aforementioned recording equipment the shared ratio of value behind the following diameter, and 1 square inch in the relation between counting of boring a hole, satisfy following formula:
Lsp=(Lfs-Lks)/Lfs (formula 5)
Lsp ≦ 0.0009 * X
0.4565(formula 6)
Wherein said diameter is meant the sub scanning direction diameter in the face of the face of the opposition side of the face of the aforementioned recording equipment perforated portion after by aforementioned recording equipment perforation of aforementioned thermoplastic resin diaphragm,
Lsp: the penetration hole diameter ratio of sub scanning direction;
Lfs: in the face of the sub scanning direction diameter of the perforated portion face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Lks: in the face of the sub scanning direction diameter of the perforated portion face of the opposition side of the face of recording equipment, after the perforation of thermoplastic resin diaphragm;
Boring a hole in the X:1 square inch counted.
7. as each described stencil printing method in the claim 1～6, it is characterized in that,
Aforementioned recording equipment is a thermal head, and described thermal head has a plurality of heaters of arranging along main scanning direction.
8. as each described stencil printing method in the claim 1～6, it is characterized in that,
Aforementioned thermal-sensitive porous body paper only is made of the thermoplastic resin diaphragm basically.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005142874 | 2005-05-16 | ||
| JP2005142874 | 2005-05-16 | ||
| JP2005349849 | 2005-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1864997A CN1864997A (en) | 2006-11-22 |
| CN100506531C true CN100506531C (en) | 2009-07-01 |
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ID=37424205
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100515056A Expired - Fee Related CN100506531C (en) | 2005-05-16 | 2006-02-28 | Stencil printing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100506531C (en) |
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2006
- 2006-02-28 CN CNB2006100515056A patent/CN100506531C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1864997A (en) | 2006-11-22 |
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Owner name: RICOH CO. LTD. Free format text: FORMER OWNER: TOHOKU RICOH CO., LTD. Effective date: 20130724 |
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