CN1757520A - Ink jet printer - Google Patents
Ink jet printer Download PDFInfo
- Publication number
- CN1757520A CN1757520A CNA2005101085332A CN200510108533A CN1757520A CN 1757520 A CN1757520 A CN 1757520A CN A2005101085332 A CNA2005101085332 A CN A2005101085332A CN 200510108533 A CN200510108533 A CN 200510108533A CN 1757520 A CN1757520 A CN 1757520A
- Authority
- CN
- China
- Prior art keywords
- thin slice
- ink
- jet printer
- support plate
- sheet support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/02—Platens
- B41J11/06—Flat page-size platens or smaller flat platens having a greater size than line-size platens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0024—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using conduction means, e.g. by using a heated platen
- B41J11/00242—Controlling the temperature of the conduction means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0085—Using suction for maintaining printing material flat
Landscapes
- Ink Jet (AREA)
- Handling Of Sheets (AREA)
Abstract
An ink jet printer including: a sheet support plate having suction holes formed in a sheet support surface thereof; a sheet advance mechanism adapted to advance a sheet step-wise in a sheet advance direction over the sheet support surface; and an imaging system adapted to form an image by depositing liquid ink on the sheet, the ink being allowed to dry-out while the sheet is advanced over the sheet support plate, wherein the suction holes are arranged such that their influence on the ink drying process is essentially uniform over the whole area of the image.
Description
Technical field
The present invention relates to a kind of ink-jet printer, it comprises:
-have a sheet support plate that is formed at the SS in its thin slice (sheet) bearing-surface;
-be suitable at the thin slice feed mechanism of on the thin slice feeding direction, sending thin slice on the thin slice bearing-surface steppingly to; With
-be suitable on sheet support plate, sending in the thin slice by liquid ink being deposited on the imaging system that forms image on the thin slice, allow described ink to parch.
Background technology
In ink-jet printer, the sheet support plate that comprises SS usually is used to support image and accepts thin slice, guarantees that simultaneously this thin slice flatly is positioned on this sheet support plate.Apply negative pressure by SS in the bottom side of thin slice, just keep suction to be attached on the end face of sheet support plate thin slice.SS should be evenly distributed on the surf zone of sheet support plate, makes to apply consistent basically suction on thin slice.On the other hand, consider the production aspect, the quantity of SS should be too not big.
Disclose a kind of printer among the EP-A 0409596, wherein SS is arranged in the not slant pattern of rule, and wherein adjacent row's SS offsets half of spacing each other.
Summary of the invention
An object of the present invention is to improve the image quality in images of being printed by the ink-jet printer of the above-mentioned type.
This purpose realizes by the feature described in the claim 1.
According to the present invention, SS is arranged so that they are uniform basically to the influence of ink dried process in the whole zone of image.
The present invention is based on such observation, promptly SS can postpone or quicken the ink dried process, and this has tangible influence to the image of being printed.
For example, in the heat molten type ink-jet printer, when print image, thin slice such as paper are sent on sheet support plate.At room temperature, the hot melt ink is solid-state, therefore must before ink can be injected on the paper ink in the printer be heated above it more than fusing point.In order to obtain the suitable and stable propagation of ink, should control the temperature of sheet support plate and the temperature of paper, make ink under suitable speed, cool off.Yet,, just be different from the support plate of peripheral part in performance, especially its thermal conductivity and the thermal capacity thereof of the sheet support plate of the position of SS.Therefore, just reduced the heat dissipation of the slice part office that is positioned on the SS.This glossiness to scattering of light, marresistance and institute's print image has negative effect.Especially, the difference of glossiness is visible in the image of being printed.
Similarly, the ink dried process relates in the ink-jet printer of solvent evaporation therein, and the mobile meeting of the air by the SS suction causes the acceleration evaporation of solvent.
If what SS was arranged in rule embarks on journey into the row pattern, and these are listed on the thin slice feeding direction and extend, some zone of institute's print image SS repeatedly so through listing, and the mid portion of image will can not be subjected to the influence of SS.As a result, the difference of glossiness etc. becomes regular pattern on the print image but is visible.For this reason, the present invention proposes SS is arranged so that all basically images all pass through the roughly the same number of times of SS, thereby is subjected to the influence of SS in roughly the same mode.
Suitable setting for example can be the random distribution of SS on the zone of sheet support plate.Yet, it seems that from the production efficiency aspect SS of regular pattern is preferred.Therefore, purpose of the present invention can realize that wherein the row of SS and thin slice feeding direction have formed certain angle by slant pattern.As a result, will can be through next or following several SSs in the same row through the image section of a SS, this is because these hole lateral shifts are opened.Certainly, a certain amount of send step to after, described image section can be through the SS of adjacent column.Yet this pattern can be arranged so that till that time ink is enough degree ground disappearances, no longer are subjected to the influence that SS exists.
Useful details of the present invention has been described in following content.
The pattern of SS can adapt to the step-length that thin slice is sent to, makes that the spacing of the SS on the thin slice feeding direction is the non-integral multiple of step-length for any two SSs of aiming on the thin slice feeding direction.As a result, reach two thin slices on the SS and send a spacer segment between the step to during the time when image section rests on, this image-region can not rest on after next sends step on next SS, but can be on the thin slice feeding direction and this hole offset.Therefore, as long as ink is dry fully, institute's print image any names a person for a particular job and rests on the SS only once so, perhaps never can rest on the SS, do not have the point of image to rest on and reach several times on the SS, this just can guarantee the abundant uniformity of ink dried process.
SS can be provided with embarking on journey, for example is preferably the equidistant row perpendicular to the thin slice throughput direction.This is useful especially in the heat molten type ink-jet printer, wherein controls the temperature of sheet support plate by cycling through wherein fluid.
Description of drawings
Introduce the preferred embodiments of the present invention now in conjunction with the accompanying drawings, in the accompanying drawings:
Fig. 1 is the perspective schematic view of heat molten type ink-jet printer;
Fig. 2 is the partial sectional view of the sheet support plate in the printer shown in Figure 1; With
Fig. 3 to Fig. 5 is the partial top view of the thin slice sent on the SS of sheet support plate.
The specific embodiment
As shown in Figure 1, the heat molten type ink-jet printer comprises reel (platen) 10, and it is intermittently driven rotation, so that send thin slice 12 to as paper on the end face of sheet support plate 14 on direction shown in the arrow A.A plurality of conveying rollers 16 rotatably are supported on the cover plate 18, and formed delivery nip together with reel 10, therefore, the thin slice 12 by guide plate 20 feeding from the spool (not shown) is just emitted in the gap between the surface of the edge by being formed at cover plate 18 and sheet support plate 14.
The slide 22 that comprises many ink jet-print head (not shown) is installed on the sheet support plate 14, so that move back and forth on direction shown in the arrow B on thin slice 12.In the passing through each time of slide 22, printhead so just prints a large amount of pixel lines according to offering the image information of printhead and the hot melt ink droplets being injected on the thin slice on thin slice 12.For easy purpose, not shown in the diagramly go out to be used for guiding and drive unit, the ink feed pipeline of slide 22 and be used for data line of printhead etc.
The end face of sheet support plate 14 has the SS 24 of regular pattern, and it has run through support plate and has led to the suction chamber 26 that is formed in plate 14 bottoms.Suction chamber is connected on the air exhauster 28, and air exhauster 28 forms negative pressure in suction chamber, so air sucks by SS 24.The result, thin slice 12 is inhaled on the flat surfaces that is attached to support plate 14 and is therefore remained under the flat condition, especially in the zone that slide 22 was scanned, therefore just between the surface of the nozzle of printhead and thin slice 12, form consistent distance on the whole width of thin slice, and can realize high print quality.
Have 100 ℃ or above temperature from the molten ink drop of print-head nozzle ejection, and can they attached to thin slice 12 on after cool down and solidify.Therefore, in print image, the heat of ink must dissipate with sufficient speed, and this speed should be basically identical for the whole zone of thin slice 12.In order to dissipate heat, control the temperature of thin slice 12 by temperature control system 30 and by means of sheet support plate 14, temperature control system 30 makes temperature controlled fluid, be preferably liquid cycles through plate 14.This temperature control system comprises the circulatory system of the pipe 32 that has on the opposite end that is connected plate 14.Wherein a pipe is through expansion vessel 33, and it contains the gas buffer agent of the temperature correlation variation that is useful in the buffer fluid volume.Understandablely be that temperature control system 30 comprises the heater that is used to control fluid temperature (F.T.), temperature sensor, fin or the like, and is used to make fluid to cycle through pump or other positive displacement arrangements of sheet support plate 14 inside.
Fig. 3 has shown that SS 24 wherein is located at the pattern in sheet support plate 14 surfaces.These SSs have formed the regular pattern that is capable R and row C.Row R is parallel to direction B and extends, and therefore also is parallel to the cavity 34 (Fig. 2) that forms in sheet support plate 14.But the corresponding thin slice feeding direction of row C A tilts.
In the example shown, the pattern of SS 24 every five-element just repeat once, makes SS 24-1 in first row for example align with SS 25-5 in the fifth line on thin slice feeding direction A.
Shown the leading edge of thin slice 12 in addition in Fig. 3, it is sent on direction A, and advances on thin slice when slide 22 (Fig. 1) and to keep image pixel the time being still on the sheet support plate so that print another row.Be deposited on the thin slice 12 the hot melt ink by with contacting of sheet support plate 14 with the cooling of suitable cooldown rate.Yet in the SS 24 of first row, cooldown rate reduces, and this is because thin slice does not contact with the metallic plate 14 with high heat conductance.
When slide 22 was finished its stroke, thin slice 12 sent further extremely position shown in Figure 4 once more, and then kept static so that print the next line image.The step-length S that thin slice is sent step to shows in Fig. 4.Stain 24a among Fig. 4 represents those zones that covered by the SS 24 of first row under the state shown in Figure 3 of thin slice 12, and therefore in these zones, ink is uncolled to the degree identical with the thin slice remainder.Because the cooldown rate of ink will slightly reduce in the edge of SS 24, therefore, in fact the diameter of some 24a can be slightly larger than the diameter of SS 24.
Because row C is for what tilt, therefore shown in Figure 4 some 24a opens with second SS 24 lateral shifts of going, and can be not overlapping with those SSs on the thin slice feeding direction A.
When thin slice 12 is in the position shown in Figure 4, also can and form the similarity that cooldown rate reduces on the SS 24 of second row on every side.Yet because cooldown rate press index law ground decay in time, so second capable the naming a person for a particular job that SS caused a little can be so unobvious.
In the further process of print procedure, thin slice 12 is sent to steppingly with step-length S, and in each step, the SS of first row will cause the SS 24a of another row, second row and subsequently the SS in the row will cause a little fuzzy point.
Fig. 5 has shown the state when thin slice 12 was sent to for 5 steps, and has shown the some 24b that the point in the some 24a that SS caused of first row and second, third and the fourth line causes.Can see, in the bottom of Fig. 5, these 24a, 24b is together underlapped, and roughly be evenly distributed on the surface of thin slice 12, so SS is roughly uniform to the influence of ink cooldown rate on the whole surface of thin slice 12, can produce any obvious effects hardly.
As showing further on the left side of thin slice among Fig. 5 12 that the SS 24-5 in the fifth line can be not overlapping with the some 24a-1 that SS 24-1 under the state shown in Figure 3 is produced.The point 24a-1 on thin slice feeding direction A with SS 24-5 offset.This is because SS 24-1 and the distance D between the SS 24-5 among Fig. 3 are the non-integral multiple of step-length S.Therefore, though SS 24-1 and 24-5 aim on thin slice feeding direction A, some 24a-1 can not rest on the SS 24-5, so the ink cooling procedure at this some place just can not be subjected to the delay of SS 24-5 again.
In a practical embodiment of printer, step-length S is variable, and switches to another printing model, for example will change when single pass mode switches to the round trip pattern at printer.Yet, since may step-length the limited amount of S, and step-length shift to an earlier date known, therefore can chosen distance D, make for all possible step-length, can realize that D is the condition of the non-integer multiple of S.
In an improved embodiment, be listed as especially therein among the embodiment that C with respect to thin slice feeding direction A and not do not tilt, distance D (it will be the distance between the adjacent lines R) can be less than step-length S.In this case, should realize that additional conditions are that S is the non-integer multiple of D, to avoid overlapping point.For example, if step-length S is 17 millimeters, the diameter of SS 24 is 1.0 millimeters, and distance D may be selected to 12 millimeters so.Therefore, just after 12 step thin slices were sent step to, naming a person for a particular job that first SS is produced was for the first time overlapping with another SS.In the step process in these 12 steps, ink has time enough to cool down, so it no longer is subjected to the influence of second SS.
Claims (6)
1. ink-jet printer, it comprises:
-have a sheet support plate (14) that is formed at the SS (24) in its thin slice bearing-surface (42);
-be suitable for sending to steppingly the thin slice feed mechanism (10,16) of thin slice (12) at described thin slice bearing-surface (42) upper edge thin slice feeding direction (A); With
-be suitable for the imaging system (22) that forms image on the thin slice (12) by liquid ink is deposited on, when on described sheet support plate (14), sending thin slice to, allow described ink to parch, wherein said SS (24) is arranged so that described SS is consistent basically to the influence of ink dried process on the whole zone of image
It is characterized in that,
The slant pattern that-described SS (24) is arranged to be row (R) and is listed as the rule of (C), wherein said row (C) tilt with respect to thin slice feeding direction (A), make image section (24a-1) through a SS (24-1) will be not before ink disappears can be through some SSs below in the same row, can therefore no longer not be subjected to the influence that SS exists through the SS of adjacent column yet.
2. ink-jet printer according to claim 1 is characterized in that, (24-1,24-5) minimum range between (D) is the non-integer multiple of sending step-length (S) to of described thin slice (12) to go up two SSs aiming at described thin slice feeding direction (A).
3. each described ink-jet printer in requiring according to aforesaid right is characterized in that described SS (24) is arranged in rows (R), and described row (R) is perpendicular to described thin slice feeding direction (A).
4. each described ink-jet printer in requiring according to aforesaid right is characterized in that described ink-jet printer comprises temperature control system (30), and it is used to control the temperature of described sheet support plate (14).
5. according to each described ink-jet printer in claim 3 and 4, it is characterized in that, described sheet support plate (14) has internal cavity (34), it extends in plane at described plate on perpendicular to the direction of described thin slice feeding direction (A), and described temperature control system (30) is suitable for making the temperature controlled fluid circulation to flow to described cavity.
6. each described ink-jet printer in requiring according to aforesaid right is characterized in that described printer is the heat molten type ink-jet printer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04104860.4 | 2004-10-04 | ||
| EP04104860 | 2004-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1757520A true CN1757520A (en) | 2006-04-12 |
Family
ID=34929659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101085332A Pending CN1757520A (en) | 2004-10-04 | 2005-09-30 | Ink jet printer |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20060181016A1 (en) |
| JP (1) | JP2006130908A (en) |
| CN (1) | CN1757520A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279548B (en) * | 2007-03-29 | 2011-02-02 | 兄弟工业株式会社 | Image recording apparatus |
| CN102431293A (en) * | 2010-09-17 | 2012-05-02 | 精工爱普生株式会社 | Recording apparatus |
| CN117601417A (en) * | 2024-01-18 | 2024-02-27 | 杭州云栖交叉技术研究院 | Spray head spraying structure based on rotary printing platform |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2451085A (en) | 2007-07-17 | 2009-01-21 | Agco Gmbh | Long vehicle turn indicators |
| JP5086179B2 (en) * | 2008-05-30 | 2012-11-28 | 富士フイルム株式会社 | Image forming apparatus and image forming method |
| JP5166129B2 (en) * | 2008-06-11 | 2013-03-21 | 富士フイルム株式会社 | Image forming apparatus |
| JP5349202B2 (en) * | 2009-08-24 | 2013-11-20 | 富士フイルム株式会社 | Inkjet recording apparatus and inkjet recording method |
| JP6213824B2 (en) * | 2013-11-20 | 2017-10-18 | 株式会社リコー | Sheet material placing apparatus and image forming apparatus |
| JP2018052628A (en) * | 2016-09-26 | 2018-04-05 | 富士ゼロックス株式会社 | Image formation apparatus and recording medium supply apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269586A (en) * | 1980-01-25 | 1981-05-26 | Norfield Corporation | Heated platen |
| JPH0329352U (en) * | 1989-07-19 | 1991-03-22 | ||
| DE69120611T2 (en) * | 1990-08-24 | 1996-12-12 | Canon Kk | Recorder |
| DE59005474D1 (en) * | 1990-12-22 | 1994-06-01 | Design & Technik Gmbh | Device for pulling down the free end of a vehicle top or the like. |
| NL1008572C2 (en) * | 1998-03-12 | 1999-09-14 | Oce Tech Bv | Inkjet printing device and method for image-wise applying hotmelt ink as well as hotmelt ink and a combination of hotmelt ink suitable for use in such a device and method. |
| US6729720B2 (en) * | 1999-12-20 | 2004-05-04 | Olympus Optical Co., Ltd. | Image forming apparatus having suction holes formed in grooves of the paper supporting surface |
| US6536894B1 (en) * | 2000-06-06 | 2003-03-25 | Hewlett-Packard Company | Print media heating techniques for a vacuum belt hard copy apparatus |
| US6406140B1 (en) * | 2000-12-08 | 2002-06-18 | Hewlett-Packard Company | Anisotropic thermal conductivity on a heated platen |
-
2005
- 2005-09-30 CN CNA2005101085332A patent/CN1757520A/en active Pending
- 2005-10-03 JP JP2005289848A patent/JP2006130908A/en not_active Withdrawn
- 2005-10-03 US US11/240,774 patent/US20060181016A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279548B (en) * | 2007-03-29 | 2011-02-02 | 兄弟工业株式会社 | Image recording apparatus |
| CN102431293A (en) * | 2010-09-17 | 2012-05-02 | 精工爱普生株式会社 | Recording apparatus |
| CN117601417A (en) * | 2024-01-18 | 2024-02-27 | 杭州云栖交叉技术研究院 | Spray head spraying structure based on rotary printing platform |
| CN117601417B (en) * | 2024-01-18 | 2024-05-14 | 杭州云栖交叉技术研究院 | Spray head spraying structure based on rotary printing platform |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060181016A1 (en) | 2006-08-17 |
| JP2006130908A (en) | 2006-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |