WO2010061904A1 - インクジェットプリンタ - Google Patents
インクジェットプリンタ Download PDFInfo
- Publication number
- WO2010061904A1 WO2010061904A1 PCT/JP2009/069997 JP2009069997W WO2010061904A1 WO 2010061904 A1 WO2010061904 A1 WO 2010061904A1 JP 2009069997 W JP2009069997 W JP 2009069997W WO 2010061904 A1 WO2010061904 A1 WO 2010061904A1
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- WIPO (PCT)
- Prior art keywords
- ink
- printing
- ink head
- head unit
- ultraviolet lamp
- Prior art date
Links
- 238000007639 printing Methods 0.000 claims abstract description 189
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000007723 transport mechanism Effects 0.000 claims description 4
- 239000000976 ink Substances 0.000 description 422
- 238000000034 method Methods 0.000 description 131
- 238000010586 diagram Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 238000010146 3D printing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/145—Arrangement thereof
- B41J2/15—Arrangement thereof for serial printing
-
- 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
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
-
- 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
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/0009—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material
- B41J13/0045—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material concerning sheet refeed sections of automatic paper handling systems, e.g. intermediate stackers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
- B41J2/2114—Ejecting specialized liquids, e.g. transparent or processing liquids
Definitions
- the present invention relates to an inkjet printer.
- ink jet printers that print on a medium such as recording paper by discharging the ink are known.
- An ink jet printer is also known in which a plurality of ink layers are stacked on the surface of a medium during printing (see, for example, Patent Document 1).
- the medium is transported forward by a predetermined transport amount each time the ink head unit moves in the left-right direction while ejecting ink. Then, by repeating such an operation, one ink layer is formed over the entire surface of the medium. Once the ink layer is formed, the media is pulled back once. Thereafter, similarly, the ink head unit moves in the left-right direction while ejecting ink, and the medium is sequentially conveyed forward. As a result, a new ink layer is formed on the ink layer.
- the medium is once pulled back, and then another ink layer is formed. For this reason, the printing time becomes longer as the medium is pulled back.
- the present invention has been made in view of such a point, and an object thereof is to shorten the printing time in an ink jet printer capable of forming a plurality of ink layers on a medium.
- An ink jet printer includes an ink head unit that ejects ink toward a medium, a moving mechanism that moves the ink head unit in the left-right direction, a transport mechanism that transports the medium in the front-rear direction, and the ink head.
- a control unit that controls the unit, the moving mechanism, and the transport mechanism, wherein the control device discharges ink from the ink head unit while sequentially transporting the medium forward, Second printing is performed by ejecting ink from the ink head unit while sequentially transporting the medium backward.
- the present invention it is possible to shorten the printing time in an inkjet printer capable of forming a plurality of ink layers on a medium.
- FIG. 3 is a layout diagram of an ink head unit and an ultraviolet lamp according to a first example of the first embodiment.
- (A)-(d) is explanatory drawing of the printing method which concerns on the 1st Example of 1st Embodiment.
- FIG. 5 is a layout diagram of an ink head unit and an ultraviolet lamp according to a second example of the first embodiment.
- (A)-(e) is explanatory drawing of the printing method which concerns on 2nd Example of 1st Embodiment.
- FIG. 6 is a layout diagram of an ink head unit and an ultraviolet lamp according to a first example of the second embodiment.
- (A)-(d) is explanatory drawing of the printing method which concerns on the 1st Example of 2nd Embodiment. It is a layout diagram of an ink head unit and an ultraviolet lamp according to a second example of the second embodiment. (A)-(d) is explanatory drawing of the printing method which concerns on 2nd Example of 2nd Embodiment. FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a third example of the second embodiment. (A)-(e) is explanatory drawing of the printing method which concerns on 3rd Example of 2nd Embodiment. It is a layout diagram of an ink head unit and an ultraviolet lamp according to a fourth example of the second embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a first example of the third embodiment.
- (A)-(d) is explanatory drawing of the printing method which concerns on the 1st Example of 3rd Embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a second example of the third embodiment.
- (A)-(h) is explanatory drawing of the printing method which concerns on 2nd Example of 3rd Embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a third example of the third embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a fourth example of the third embodiment.
- (A)-(e) is explanatory drawing of the printing method which concerns on the 4th Example of 3rd Embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a fifth example of the third embodiment.
- (A)-(f) is explanatory drawing of the printing method which concerns on the 5th Example of 3rd Embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a sixth example of the third embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a first example of the fourth embodiment.
- (A)-(d) is explanatory drawing of the printing method which concerns on the 1st Example of 4th Embodiment.
- It is a layout view of an ink head unit and an ultraviolet lamp according to a second example of the fourth embodiment.
- (A)-(h) is explanatory drawing of the printing method which concerns on 2nd Example of 4th Embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a third example of the fourth embodiment.
- (A)-(f) is explanatory drawing of the printing method which concerns on 3rd Example of 4th Embodiment. It is a layout diagram of an ink head unit and an ultraviolet lamp according to a fourth example of the fourth embodiment.
- (A)-(d) is explanatory drawing of the printing method which concerns on the 4th Example of 4th Embodiment.
- FIG. 10 is a layout diagram of an ink head unit and an ultraviolet lamp according to a fifth example of the fourth embodiment.
- (A)-(e) is explanatory drawing of the printing method which concerns on the 5th Example of 4th Embodiment. It is a layout view of an ink head unit and an ultraviolet lamp according to a sixth example of the fourth embodiment.
- FIG. 20 is a layout diagram of an ink head unit and an ultraviolet lamp according to an eighth embodiment.
- FIG. 10 is a layout view of an ink head unit and an ultraviolet lamp according to a ninth embodiment. It is sectional drawing of printed matter.
- “medium” includes not only various recording media made of paper such as plain paper but also resin materials such as PVC and polyester, and various materials such as aluminum, iron, and wood. To do.
- the “inkjet method” refers to various conventionally known methods including various continuous methods such as a binary deflection method and a continuous deflection method, and various on-demand methods such as a thermal method and a piezoelectric element method. This means a printing method based on an inkjet technique based on the above method.
- the ink jet printer 100 uses, for example, recording paper M as a medium.
- the ink jet printer 100 uses ink that is cured when irradiated with ultraviolet rays (hereinafter referred to as “UV ink” as appropriate).
- the inkjet printer 100 includes a base member 112 extending in the left-right direction.
- Side members 114 ⁇ / b> L and 114 ⁇ / b> R are provided at both left and right ends of the base member 112.
- the side member 114L and the side member 114R are connected by the central wall 122.
- a plurality of ink cartridges 116 each storing different types of UV ink are disposed in the side member 114R. In FIG. 1, only one ink cartridge 116 is shown.
- One end of the ink tube 118 is connected to the ink cartridge 116.
- An ink head 103 (see FIG. 2) described later is connected to the other end of the ink tube 118. Although details will be described later, the ink head 103 is provided for each UV ink.
- the ink head unit 102 is configured by the plurality of ink heads 103.
- the UV ink stored in the ink cartridge 116 is supplied to the ink head 103 via the ink tube 118. In FIG. 1, only one ink tube 118 is shown.
- the ink tube 118 is inserted into the ink tube guide 120 and supported by the ink tube guide 120.
- a guide receiving member 123 is provided on the wall surface of the central wall 122.
- the ink tube guide 120 is supported by a guide receiving member 123.
- a wire 124 that is movable in the left-right direction is disposed on the wall surface of the central wall 122.
- a carriage 130 is fixed to the wire 124. As the wire 124 moves, the carriage 130 moves in the left-right direction.
- the moving direction of the carriage is referred to as a main scanning direction Y.
- the ink head unit 102 is mounted on the carriage 130.
- the carriage 130 is equipped with two ultraviolet lamps 2 and 106 composed of LED (Light (Emitting Diode) lamps as irradiation devices for irradiating ultraviolet rays. Details of the ultraviolet lamps 2 and 106 will be described later.
- Ultraviolet lamps 2 and 106 shown in FIG. 1 are irradiation apparatuses according to a first example of the first embodiment to be described later, and are merely examples of the irradiation apparatus according to the present invention.
- the ink head unit 102, the ultraviolet lamp 2, and the ultraviolet lamp 106 are configured to reciprocate in the main scanning direction Y.
- the inkjet printer 100 includes a grid roller 55 as a roller for conveying the recording paper M in the front-rear direction.
- a plurality of grid rollers 55 are provided along the main scanning direction Y. In FIG. 1, only the left and right end grid rollers 55 are shown.
- a pinch roller that sandwiches the recording paper M between the grid roller 55 and the grid roller 55 is provided above the grid roller 55.
- the conveyance direction of the recording paper M is referred to as a sub-scanning direction X.
- the inkjet printer 100 includes a control device 50 that is a microcomputer.
- the control device 50 controls various operations of the inkjet printer 100. That is, the control device 50 controls the movement of the carriage 130, the conveyance of the recording paper M by the grid roller 55, the turning on and off of the ultraviolet lamps 2 and 106, the ejection of ink in the ink head unit 102, and the like.
- the ink head unit and the irradiation device are different from each other.
- the ink head unit 102 includes an ink head 103 a that ejects process color ink, an ink head 103 b that ejects clear (transparent) ink, and white (white). And an ink head 103c that ejects ink.
- Each ink is a UV ink.
- the ink heads 103a, 103b, and 103c are appropriately referred to as a process color ink head, a clear ink head, and a white ink head, respectively.
- the process color ink head 103a includes an ink head that ejects blue (cyan) ink, an ink head that ejects red (magenta) ink, and an ink head that ejects yellow (yellow) ink. And an ink head for ejecting black ink.
- ink heads that eject blue, red, yellow, and black inks are appropriately referred to as a blue ink head, a red ink head, a yellow ink head, and a black ink head, respectively.
- “F”, “Re”, “Le”, and “R” represent front, rear, left, and right, respectively.
- “A” and “B” represent the direction of carriage and the direction of return.
- the going direction A is the left direction and the return direction B is the right direction, but they may be reversed.
- Printing that ejects ink only in the direction A is unidirectional printing.
- Printing that ejects ink in both the direction A and the return direction B is bi-directional printing.
- FIG. 2 relates to the first example of the first embodiment, and is a layout view of the ink head unit 102 and the like viewed from the direction A1 in FIG.
- the process color ink heads 103a, the clear ink head 103b, and the white ink head 103c are arranged at the same positions in the front-rear direction.
- An ultraviolet lamp 106 is disposed on the right side of the ink head unit 102.
- An ultraviolet lamp 2 is disposed behind the ink head unit 102 and the ultraviolet lamp 106.
- each rectangular area drawn with solid lines of the ink heads 103a, 103b, and 103c represents an ink ejection area.
- Each rectangular area drawn with a solid line of the ultraviolet lamps 2 and 106 indicates an irradiation area of ultraviolet rays.
- Reference symbol L indicates the length in the front-rear direction of each irradiation region of the ultraviolet lamps 2 and 106.
- the distance between the ink head unit 102 and the ultraviolet lamp 106 in the left-right direction is a length G.
- the front-rear direction lengths of the ejection regions of the ink heads 103a, 103b, and 103c and the irradiation region of the ultraviolet lamp 106 are the same.
- the distance in the front-rear direction between the ink head unit 102 and the ultraviolet lamp 2 is a length G2. Note that G2 may be zero in each example of the present embodiment and each embodiment described later.
- the ultraviolet lamp 2 disposed behind the ink head unit 102 is longer in the left-right direction than the ultraviolet lamp 106 disposed on the side of the ink head unit 102.
- the length in the left-right direction of the ultraviolet lamp disposed behind the ink head unit is the left and right of the ultraviolet lamp 106 disposed on the side of the ink head unit. It may be equal to the direction length or shorter.
- the inkjet printer 100 performs the first printing that ejects ink from the ink head unit while sequentially transporting the recording paper forward, and the second printing that ejects ink from the ink head unit while sequentially transporting the recording paper backward.
- Printing In the first printing, the process color ink head 103a and the white ink head 103c eject ink, and the clear ink head 103b does not eject ink.
- the process color ink head 103a and the white ink head 103c do not eject ink, and the clear ink head 103b ejects ink.
- the ultraviolet lamp disposed on the side of the ink head unit is lit constantly or appropriately. As a result, the process color ink and the white ink on the recording paper are irradiated with ultraviolet rays, and these inks are cured.
- the ultraviolet lamp 2 when the carriage 130 moves in the going direction A, the ultraviolet lamp 2 is turned on, the ultraviolet lamp 106 is turned off, and the ink head unit 102 supplies ink. Discharge.
- the ultraviolet lamp 2 is lit, the ultraviolet lamp 106 is lit, and the ink head unit 102 does not eject ink.
- the clear ink ejected on the recording paper is not irradiated with ultraviolet rays immediately after ejection, and has a predetermined time until the ultraviolet rays are irradiated.
- the surface state of the clear ink becomes smooth, and the clear ink is cured with the surface state being smooth by the ultraviolet rays irradiated from the ultraviolet lamp 106.
- the cured clear ink has a glossiness, and as a result, a printed matter with a high glossiness can be obtained.
- the clear ink is also cured by the ultraviolet lamp 2.
- the ultraviolet lamp 2 when the carriage 130 moves in the going direction A, the ultraviolet lamp 2 is turned on, the ultraviolet lamp 106 is turned off, and the ink head unit 102 supplies ink. Discharge.
- the ultraviolet lamp 2 is turned on, the ultraviolet lamp 106 is turned off, and the ink head unit 102 does not eject ink.
- the second method it is possible to obtain a printed matter with a greater gloss.
- the ultraviolet lamp 2 when the carriage 130 moves in the going direction A, the ultraviolet lamp 2 is turned on, the ultraviolet lamp 106 is turned off, and the ink head unit 102 supplies ink. Discharge.
- the ultraviolet lamp 2 is turned on, the ultraviolet lamp 106 is turned on, and the ink head unit 102 ejects ink.
- the ultraviolet lamp 2 is turned on and the ultraviolet lamp 106 is turned off both when the carriage 130 moves in the going direction A and when the carriage 130 moves in the return direction B.
- the ink head unit 102 ejects ink.
- an ultraviolet lamp 104 is arranged on the left side of the ink head unit 102.
- Other configurations are the same as those of the first embodiment.
- FIGS. 5A to 5E a method shown in FIGS. 5A to 5E can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- the white ink head 103c includes a blue ink head 103aa, a red ink head 103ab, a yellow ink head 103ac, a black ink head 103ad, and It is arranged behind the clear ink head 103b.
- the first print that discharges process color ink and white ink from the ink head unit while sequentially transporting the recording paper forward, and the ink head unit while sequentially transporting the recording paper backward To the second printing for discharging the clear ink.
- FIG. 6 shows an ink head unit 102-1 and the like according to a first example of the second embodiment.
- Reference symbol L2 indicates the length in the front-rear direction of the ejection region of the ink head unit 102-1.
- An ultraviolet lamp 106-1 is arranged on the right side of the ink head unit 102-1.
- the length in the front-rear direction of the irradiation region of the ultraviolet lamp 106-1 is L2.
- An ultraviolet lamp 20 is disposed behind the ink head unit 102-1 and the ultraviolet lamp 106-1.
- the ink head unit 102-1 and the ultraviolet lamps 20 and 106-1 are mounted on the carriage 130-1.
- FIGS. 7A to 7D a method shown in FIGS. 7A to 7D can be used in the second printing.
- W indicates a white ink head
- P indicates a process color ink head
- CL indicates a clear ink head (the same applies hereinafter). Since the contents of each method are clear from these drawings, their explanation is omitted.
- an ultraviolet ray lamp 106-1a is arranged on the right side of the process color ink head 103a and the clear ink head 103b, and the white ink head 103c.
- An ultraviolet lamp 106-1b is arranged on the right side.
- FIGS. 9A to 9D a method as shown in FIGS. 9A to 9D can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-1 is arranged on the left side of the ink head unit 102-1, and the ink head unit 102-1 and the ultraviolet lamp are arranged.
- An ultraviolet lamp 20 is arranged behind 104-1.
- FIGS. 11A to 11E in the second printing, for example, a method as shown in FIGS. 11A to 11E can be used. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-1a is arranged on the left side of the process color ink head 103a and the clear ink head 103b, and the white ink head 103c
- An ultraviolet lamp 104-1b is arranged on the left side.
- FIGS. 13A to 13E a method shown in FIGS. 13A to 13E can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- the clear ink head 103b is disposed in front of the process color ink head 103a and the white ink head 103c. Also in the third embodiment, the first printing that discharges the process color ink and the white ink from the ink head unit 102-2 and the recording paper are sequentially conveyed backward while the recording paper is sequentially conveyed forward. Second printing for discharging clear ink from the ink head unit 102-2 is performed.
- FIG. 14 shows an ink head unit 102-2 and the like according to a first example of the third embodiment.
- An ultraviolet lamp 106-1 is arranged on the right side of the ink head unit 102-2.
- An ultraviolet lamp 40 is disposed behind the ink head unit 102-2 and the ultraviolet lamp 106-1.
- the ink head unit 102-2 and the ultraviolet lamps 40 and 106-1 are mounted on the carriage 130-2.
- FIGS. 15A to 15D can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 106-1a is arranged on the right side of the process color ink head 103a and the white ink head 103c, and the clear ink head 103b is arranged.
- An ultraviolet lamp 106-1b is arranged on the right side.
- FIGS. 17A to 17H a method shown in FIGS. 17A to 17H can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 106-3 is arranged on the right side of the process color ink head 103a and the white ink head 103c, and the ink head unit 102- 2 and the ultraviolet lamp 40-3 are arranged behind the ultraviolet lamp 106-3.
- FIGS. 19A to 19F in the second printing, for example, a method as shown in FIGS. 19A to 19F can be used. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-1 is arranged on the left side of the process color ink head 103a and the white ink head 103c, and the ink head unit 102- 2 and an ultraviolet lamp 40 are arranged behind the ultraviolet lamp 104-1.
- FIGS. 21A to 21E a method as shown in FIGS. 21A to 21E can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-1a is arranged on the left side of the clear ink head 103b, and the process color ink head 103a and the white ink head 103c are arranged.
- the ultraviolet lamp 104-1b is arranged on the left side, and the ultraviolet lamp 40 is arranged behind the ink head unit 102-2 and the ultraviolet lamp 104-1 (that is, the ultraviolet lamps 104-1a and 104-1b).
- the method shown in FIGS. 23A to 23F can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-3 is arranged on the left side of the process color ink head 103a and the white ink head 103c, and the ink head unit 102- 2 and an ultraviolet lamp 40 are arranged behind the ultraviolet lamp 104-3.
- FIGS. 25A to 25F a method shown in FIGS. 25A to 25F can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- the clear ink head 103b is disposed in front of the process color ink head 103a, and the white ink head 103c is disposed in the process color ink head 103a. It is arranged rearward. Also in the fourth embodiment, the first printing for ejecting the process color ink and the white ink from the ink head unit 102-3 and the recording paper are sequentially conveyed backward while sequentially conveying the recording paper forward. Second printing for discharging clear ink from the ink head unit 102-3 is performed.
- FIG. 26 illustrates an ink head unit 102-3 and the like according to a first example of the fourth embodiment.
- An ultraviolet lamp 106-2 is disposed on the right side of the ink head unit 102-3.
- the front-rear direction length L3 of the irradiation region of the ultraviolet lamp 106-2 is equal to the sum of the front-rear direction lengths of the irradiation regions of the clear ink head 103b, the process color ink head 103a, and the white ink head 103c.
- An ultraviolet lamp 68 is disposed behind the ink head unit 102-3 and the ultraviolet lamp 106-2.
- the ink head unit 102-3 and the ultraviolet lamps 68 and 106-2 are mounted on the carriage 130-3.
- FIGS. 27A to 27D a method as shown in FIGS. 27A to 27D can be used. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 106-2a is arranged on the right side of the clear ink head 103b, and the process color ink head 103a and the white ink head 103c are arranged.
- An ultraviolet lamp 106-2b is arranged on the right side, and an ultraviolet lamp 68 is arranged behind the ink head unit 102-3 and the ultraviolet lamp 106-2 (that is, the ultraviolet lamps 106-2a and 106-2b).
- the front-rear direction length L of the ultraviolet lamp 106-2a is equal to the front-rear direction length of the clear ink head 103b.
- the longitudinal length L2 of the ultraviolet lamp 106-2b is equal to the sum of the longitudinal lengths of the process color ink head 103a and the white ink head 103c.
- FIGS. 29A to 29H in the second printing, for example, a method as shown in FIGS. 29A to 29H can be used. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 106-4 is arranged on the right side of the process color ink head 103a and the white ink head 103c, and the ink head unit 102- 3 and an ultraviolet lamp 68 are arranged behind the ultraviolet lamp 106-4.
- FIGS. 31A to 31F in the second printing, for example, a method as shown in FIGS. 31A to 31F can be used. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 106-2c is arranged on the right side of the process color ink head 103a and the clear ink head 103b, and the white ink head 103c is arranged.
- An ultraviolet lamp 106-2d is arranged on the right side, and an ultraviolet lamp 68 is arranged behind the ink head unit 102-3 and the ultraviolet lamp 106-2 (that is, the ultraviolet lamps 106-2c and 106-2d).
- FIGS. 33A to 33D a method as shown in FIGS. 33A to 33D can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-2 is arranged on the left side of the ink head unit 102-3, and the ink head unit 102-3 and the ultraviolet lamp are arranged.
- An ultraviolet lamp 68 is arranged behind 104-2.
- FIGS. 35A to 35E a method as shown in FIGS. 35A to 35E can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-2a is arranged on the left side of the clear ink head 103b, and the process color ink head 103a and the white ink head 103c are arranged.
- An ultraviolet lamp 104-2b is arranged on the left side, and an ultraviolet lamp 68 is arranged behind the ink head unit 102-3 and the ultraviolet lamp 104-2 (that is, the ultraviolet lamps 104-2a and 104-2b).
- FIGS. 37A to 37J a method as shown in FIGS. 37A to 37J can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-4 is arranged on the left side of the process color ink head 103a and the white ink head 103c, and the ink head unit 102- 3 and an ultraviolet lamp 68 are arranged behind the ultraviolet lamp 104-4.
- a method as shown in FIGS. 39A to 39F can be used in the second printing. Since the contents of each method are clear from the above drawings, their description is omitted.
- an ultraviolet lamp 104-2c is arranged on the left side of the clear ink head 103b and the process color ink head 103a, and the white ink head 103c
- An ultraviolet lamp 104-2d is arranged on the left side
- an ultraviolet lamp 68 is arranged behind the ink head unit 102-3 and the ultraviolet lamp 104-2 (that is, the ultraviolet lamps 104-2c and 104-2d).
- FIGS. 41A to 41G in the second printing, for example, a method as shown in FIGS. 41A to 41G can be used. Since the contents of each method are clear from the above drawings, their description is omitted.
- the ink head unit ejects process color ink and white ink during the first printing, and clear ink during the second printing. Discharge.
- the type of ink ejected during the first and second printing is not limited to the above embodiment.
- the ink head unit may eject white ink during the first printing and eject process color ink during the second printing.
- the ink head unit may not include an ink head that discharges clear ink.
- the ink head unit may eject process color ink during the first printing and may eject clear ink during the second printing.
- the ink head unit may eject white ink during the first printing and eject clear ink during the second printing.
- the ink head unit may eject process color ink during the first printing, and may eject white ink during the second printing.
- the ink head unit may eject clear ink during the first printing and eject process color ink and white ink during the second printing.
- the white color of the white ink is the background color of the printed material.
- the ink head unit may eject white ink during the first printing and eject white ink and process color ink during the second printing.
- white ink is ejected both when the recording paper is conveyed forward and when it is conveyed backward. Therefore, many white inks can be ejected in a short time, and a printed matter in which the density or thickness of the white ink is sufficiently secured can be formed.
- the ink head unit may eject process color ink in both the first printing and the second printing.
- the process color ink is ejected both when the recording paper is conveyed forward and when it is conveyed backward. Therefore, many process color inks can be ejected in a short time, and a printed matter in which the density or thickness of the process color ink is sufficiently secured can be formed.
- the first printing and the second printing may have the same printing mode or may be different. Next, an embodiment in which the printing mode is different between the first printing and the second printing will be described.
- the ink head unit may include an ink head that ejects metallic ink that is, for example, gold or silver ink.
- Metallic ink has the property of being harder to cure than process color ink. Therefore, when the ink head unit ejects process color ink at the time of the first printing and ejects metallic ink at the time of the second printing, the moving speed of the carriage is greater than that at the time of the second printing. It may be made slower. Thereby, since it is possible to irradiate the metallic ink with ultraviolet rays for a long time, the metallic ink which is hard to be cured can be reliably cured.
- the carriage moving speed is set to the first printing time. May be faster than the second printing. As a result, the process color ink can be cured immediately after ejection, and bleeding of the process color ink on the recording paper can be suppressed.
- 3D printed matter with a raised surface can be formed by ejecting a large amount of clear ink onto the recording paper.
- the conveyance speed of the recording paper is higher than that at the time of the second printing. You may make it become later than the time of 1 printing. That is, the speed when the recording paper is conveyed backward may be slower than the speed when the recording paper is conveyed forward. Also in this case, it is possible to ensure a long time for irradiating the clear ink with ultraviolet rays, so that the clear ink can be reliably cured.
- the number of passes at the time of the second printing is the number of passes at the time of the first printing. You may make it become more than a number. As a result, a thicker clear ink layer can be formed on the recording paper.
- the number of printing passes is the number of carriage reciprocations necessary to complete one line printing. When the number of printing passes is 1, each time the carriage reciprocates, the medium is conveyed by one line. When the number of printing passes is 4, every time the carriage reciprocates, the medium is conveyed by 1/4 line.
- the ink head unit When the ink head unit ejects process color ink during the first printing and ejects a single color ink during the second printing, the number of passes during the first printing is greater than the number of passes during the second printing. It may be made to become.
- the ink head unit discharges process color ink at the time of the first printing and discharges clear ink at the time of the second printing to perform the gloss finish, the first printing is performed more than the second printing.
- the resolution may be increased.
- the ink head unit ejects white ink at the time of the first printing and process color ink at the time of the second printing, the size of the ink dots formed on the recording paper is larger at the time of the second printing. You may make it smaller than the time of the 1st printing. As a result, process color printing can be made clearer.
- no ultraviolet lamp is provided in front of the ink head unit.
- an ultraviolet lamp may be disposed in front of the ink head unit.
- ultraviolet lamps 106, 2 and 3 may be arranged on the side, rear and front of the ink head unit 102, respectively.
- the ultraviolet lamp 3 may be turned on and the ultraviolet lamp 106 may be turned off. As a result, even during the first printing, a certain amount of time can be secured from the time the ink is ejected until the ink is cured. By curing the ink with the ultraviolet lamp 3, it is possible to perform gloss printing with a greater gloss. According to the present embodiment, it is possible to realize gloss printing with greater glossiness in both the first printing and the second printing.
- a position changing mechanism that changes the position of one or more ink heads in the front-rear direction.
- an ink head moving mechanism 75 that moves the process color ink head 103a, the clear ink head 103b, and the white ink head 103c in the front-rear direction may be provided.
- the ink head moving mechanism 75 is controlled by the control device 50 (not shown in FIG. 43, see FIG. 1).
- FIG. 43 shows a state in which the process color ink head 103a and the clear ink head 103b are positioned forward and the white ink head 103c is positioned backward.
- the position changing mechanism may be any mechanism that can change the position of the ink head automatically or manually, and is not limited to the ink head moving mechanism 75 that moves the ink head using power such as a motor.
- the recording paper is sequentially conveyed forward, and the process color ink head 103a and the white ink head 103c eject ink.
- the ultraviolet lamps 106-1a and 106-1b are turned on, and the ultraviolet lamp 20 is turned off.
- the recording paper is sequentially conveyed backward, and the clear ink head 103b ejects ink.
- the ultraviolet lamps 106-1a and 106-1b are turned on, and the ultraviolet lamp 20 is turned off.
- a printed matter in which the white ink layer WL, the pross color ink layer PL, and the clear ink layer CLL are sequentially laminated on the recording paper M can be obtained.
- the order of the ink layers can be changed according to the type of medium, the use of the printed material, and the like.
- various printed materials can be obtained.
- the UV ink and the irradiation device that irradiates ultraviolet rays are used.
- an irradiation device that irradiates light different from ultraviolet rays for example, visible light or an electron beam
- ink that is cured by receiving light irradiated by the irradiation device for example, visible light or an electron beam
- a device that cures ink by applying heat instead of a device that irradiates light.
- a device for curing ink such as an irradiation device is not necessarily required.
- ink other types of ink such as solvent-based ink and water-soluble ink can be used instead of UV ink.
- the recording paper disposed on the platen is conveyed in the front-rear direction by a roller.
- the ink jet printer according to the present invention may include a bed for supporting the recording paper and a mechanism for moving the bed in the front-rear direction.
- the ultraviolet lamp (for example, the ultraviolet lamp 2 in FIG. 2) disposed in front of or behind the ink head may be provided outside the carriage and not move with the carriage.
- the ultraviolet lamp may be fixed to the base member 112 (see FIG. 1).
- printing is performed while sequentially transporting the medium forward, and then printing is performed while sequentially transporting the medium backward.
- printing may be performed while sequentially transporting the medium forward and then performing printing while sequentially transporting the medium forward.
- the first printing can be performed after the second printing.
- the control device 50 performs the first printing that ejects ink from the ink head unit while sequentially transporting the medium forward, and the ink head while sequentially transporting the medium backward. Second printing is performed to eject ink from the unit. According to the ink jet printer according to each of the embodiments, printing is performed even when the medium is pulled back, so that the printing time can be shortened.
- the ink heads By disposing some of the ink heads in front of or behind the other ink heads (see, for example, FIG. 6), while the medium is being sequentially conveyed in one direction forward or backward, The ink ejected from the other ink head can be superimposed on the ink ejected from the ink head. Therefore, a plurality of ink layers can be formed on the medium even when the medium is sequentially conveyed in one direction. Therefore, the printing time can be further shortened.
- an ink layer can be formed instantaneously by irradiating light from an irradiation device. Therefore, it is possible to prevent ink from being mixed between the plurality of ink layers. Therefore, a high quality printed matter can be obtained.
- by controlling the timing of turning on and off the irradiation device it is possible to realize a plurality of types of printing with different surface states such as gloss printing and mat printing.
- the irradiation body for example, the ultraviolet lamp 2 in FIG. 2
- the ink head unit it is somewhat longer during the second printing from the time the ink is ejected until it is cured. Time can be secured. Therefore, gloss printing with a greater glossiness can be performed during the second printing.
- an irradiation body for example, the ultraviolet lamp 106 in FIG. 2 that moves in the left-right direction together with the ink head unit is provided, and the lighting pattern of the irradiation body is changed between the first printing and the second printing, there are various types. A printed matter can be obtained.
- UV lamp irradiation device
- Control device 55
- Grid roller (conveyance mechanism)
- Inkjet printer 102
- Ink head unit 106
- Ultraviolet lamp irradiation device
- Carriage moving mechanism
- F Front Re Back M Recording paper medium
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Handling Of Sheets (AREA)
Abstract
Description
始めに、インクジェットプリンタ100の構成を説明する。インクジェットプリンタ100は、媒体として、例えば記録紙Mを用いるものである。インクジェットプリンタ100は、紫外線が照射されると硬化するインク(以下、「UVインク」と適宜に称する。)を使用する。
図2に示すように、インクヘッドユニット102は、プロセスカラーインクを吐出するインクヘッド103aと、クリアー(透明)インクを吐出するインクヘッド103bと、ホワイト(白色)インクを吐出するインクヘッド103cとを有している。各インクはUVインクである。なお、以下では、インクヘッド103a、103b、103cを、それぞれプロセスカラーインクヘッド、クリアーインクヘッド、ホワイトインクヘッドと適宜称することとする。
図2は、第1の実施形態の第1実施例に係り、インクヘッドユニット102等を図1のA1方向から見た配置図である。第1実施例では、各プロセスカラーインクヘッド103aと、クリアーインクヘッド103bと、ホワイトインクヘッド103cとが、前後方向に関して揃った位置に配置されている。インクヘッドユニット102の右方には、紫外線ランプ106が配置されている。インクヘッドユニット102および紫外線ランプ106の後方には、紫外線ランプ2が配置されている。図2および他の図面において、インクヘッド103a、103b、および103cの実線で描かれた各矩形領域は、インクの吐出領域を示す。紫外線ランプ2および106の実線で描かれた各矩形領域は、紫外線の照射領域を示す。符号Lは、紫外線ランプ2および106の各照射領域の前後方向長さを示す。インクヘッドユニット102と紫外線ランプ106との左右方向の間隔は、長さGである。各インクヘッド103a、103b、および103cの吐出領域と、紫外線ランプ106の照射領域との前後方向長さは同一である。インクヘッドユニット102と紫外線ランプ2との前後方向の間隔は、長さG2である。なお、本実施形態および後述の各実施形態の各実施例において、G2は零であってもよい。本実施例では、インクヘッドユニット102の後方に配置された紫外線ランプ2は、インクヘッドユニット102の側方に配置された紫外線ランプ106よりも左右方向の長さが長い。しかし、本実施形態および後述の各実施形態の各実施例において、インクヘッドユニットの後方に配置された紫外線ランプの左右方向長さは、インクヘッドユニットの側方に配置された紫外線ランプ106の左右方向長さと等しくてもよく、それより短くてもよい。
図4に示すように、第2実施例は、インクヘッドユニット102の左方に紫外線ランプ104を配置したものである。その他の構成は実施例1と同様である。
図6に示すように、第2の実施形態は、ホワイトインクヘッド103cが、青色インクヘッド103aa、赤色インクヘッド103ab、黄色インクヘッド103ac、黒色インクヘッド103ad、およびクリアーインクヘッド103bよりも後方に配置されたものである。第2の実施形態においても、記録紙を前方に順次搬送しつつ、インクヘッドユニットからプロセスカラーインクおよびホワイトインクを吐出する第1の印刷と、記録紙を後方に順次搬送しつつ、インクヘッドユニットからクリアーインクを吐出する第2の印刷とを行う。
図6は、第2の実施形態の第1実施例に係るインクヘッドユニット102-1等を表している。符号L2は、インクヘッドユニット102-1の吐出領域の前後方向長さを示す。インクヘッドユニット102-1の右方には、紫外線ランプ106-1が配置されている。紫外線ランプ106-1の照射領域の前後方向長さはL2である。インクヘッドユニット102-1および紫外線ランプ106-1の後方には、紫外線ランプ20が配置されている。インクヘッドユニット102-1、紫外線ランプ20および106-1は、キャリッジ130-1に搭載されている。
図8に示すように、第2実施例は、プロセスカラーインクヘッド103aおよびクリアーインクヘッド103bの右方に紫外線ランプ106-1aを配置し、ホワイトインクヘッド103cの右方に紫外線ランプ106-1bを配置したものである。
図10に示すように、第3実施例は、インクヘッドユニット102-1の左方に紫外線ランプ104-1を配置し、インクヘッドユニット102-1および紫外線ランプ104-1の後方に紫外線ランプ20を配置したものである。
図12に示すように、第4実施例は、プロセスカラーインクヘッド103aおよびクリアーインクヘッド103bの左方に紫外線ランプ104-1aを配置し、ホワイトインクヘッド103cの左方に紫外線ランプ104-1bを配置したものである。
図14に示すように、第3の実施形態は、クリアーインクヘッド103bが、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cよりも前方に配置されたものである。第3の実施形態においても、記録紙を前方に順次搬送しつつ、インクヘッドユニット102-2からプロセスカラーインクおよびホワイトインクを吐出する第1の印刷と、記録紙を後方に順次搬送しつつ、インクヘッドユニット102-2からクリアーインクを吐出する第2の印刷とを行う。
図14は、第3の実施形態の第1実施例に係るインクヘッドユニット102-2等を表している。インクヘッドユニット102-2の右方には、紫外線ランプ106-1が配置されている。インクヘッドユニット102-2および紫外線ランプ106-1の後方には、紫外線ランプ40が配置されている。インクヘッドユニット102-2、紫外線ランプ40および106-1は、キャリッジ130-2に搭載されている。
図16に示すように、第2実施例は、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの右方に紫外線ランプ106-1aを配置し、クリアーインクヘッド103bの右方に紫外線ランプ106-1bを配置したものである。
図18に示すように、第3実施例は、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの右方に紫外線ランプ106-3を配置し、インクヘッドユニット102-2および紫外線ランプ106-3の後方に紫外線ランプ40を配置したものである。
図20に示すように、第4実施例は、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの左方に紫外線ランプ104-1を配置し、インクヘッドユニット102-2および紫外線ランプ104-1の後方に紫外線ランプ40を配置したものである。
図22に示すように、第5実施例は、クリアーインクヘッド103bの左方に紫外線ランプ104-1aを配置し、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの左方に紫外線ランプ104-1bを配置し、インクヘッドユニット102-2および紫外線ランプ104-1(すなわち、紫外線ランプ104-1aおよび104-1b)の後方に紫外線ランプ40を配置したものである。
図24に示すように、第6実施例は、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの左方に紫外線ランプ104-3を配置し、インクヘッドユニット102-2および紫外線ランプ104-3の後方に紫外線ランプ40を配置したものである。
図26に示すように、第4の実施形態は、クリアーインクヘッド103bがプロセスカラーインクヘッド103aよりも前方に配置され、ホワイトインクヘッド103cがプロセスカラーインクヘッド103aよりも後方に配置されたものである。第4の実施形態においても、記録紙を前方に順次搬送しつつ、インクヘッドユニット102-3からプロセスカラーインクおよびホワイトインクを吐出する第1の印刷と、記録紙を後方に順次搬送しつつ、インクヘッドユニット102-3からクリアーインクを吐出する第2の印刷とを行う。
図26は、第4の実施形態の第1実施例に係るインクヘッドユニット102-3等を表している。インクヘッドユニット102-3の右方には、紫外線ランプ106-2が配置されている。紫外線ランプ106-2の照射領域の前後方向長さL3は、クリアーインクヘッド103b、プロセスカラーインクヘッド103a、およびホワイトインクヘッド103cの照射領域の前後方向長さの合計と等しい。インクヘッドユニット102-3および紫外線ランプ106-2の後方には、紫外線ランプ68が配置されている。インクヘッドユニット102-3、紫外線ランプ68および106-2は、キャリッジ130-3に搭載されている。
図28に示すように、第2実施例は、クリアーインクヘッド103bの右方に紫外線ランプ106-2aを配置し、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの右方に紫外線ランプ106-2bを配置し、インクヘッドユニット102-3および紫外線ランプ106-2(すなわち、紫外線ランプ106-2aおよび106-2b)の後方に紫外線ランプ68を配置したものである。紫外線ランプ106-2aの前後方向長さLは、クリアーインクヘッド103bの前後方向長さと等しい。紫外線ランプ106-2bの前後方向長さL2は、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの前後方向長さの合計と等しい。
図30に示すように、第3実施例は、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの右方に紫外線ランプ106-4を配置し、インクヘッドユニット102-3および紫外線ランプ106-4の後方に紫外線ランプ68を配置したものである。
図32に示すように、第4実施例は、プロセスカラーインクヘッド103aおよびクリアーインクヘッド103bの右方に紫外線ランプ106-2cを配置し、ホワイトインクヘッド103cの右方に紫外線ランプ106-2dを配置し、インクヘッドユニット102-3および紫外線ランプ106-2(すなわち、紫外線ランプ106-2cおよび106-2d)の後方に紫外線ランプ68を配置したものである。
図34に示すように、第5実施例は、インクヘッドユニット102-3の左方に紫外線ランプ104-2を配置し、インクヘッドユニット102-3および紫外線ランプ104-2の後方に紫外線ランプ68を配置したものである。
図36に示すように、第6実施例は、クリアーインクヘッド103bの左方に紫外線ランプ104-2aを配置し、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの左方に紫外線ランプ104-2bを配置し、インクヘッドユニット102-3および紫外線ランプ104-2(すなわち、紫外線ランプ104-2aおよび104-2b)の後方に紫外線ランプ68を配置したものである。
図38に示すように、第7実施例は、プロセスカラーインクヘッド103aおよびホワイトインクヘッド103cの左方に紫外線ランプ104-4を配置し、インクヘッドユニット102-3および紫外線ランプ104-4の後方に紫外線ランプ68を配置したものである。
図40に示すように、第8実施例は、クリアーインクヘッド103bおよびプロセスカラーインクヘッド103aの左方に紫外線ランプ104-2cを配置し、ホワイトインクヘッド103cの左方に紫外線ランプ104-2dを配置し、インクヘッドユニット102-3および紫外線ランプ104-2(すなわち、紫外線ランプ104-2cおよび104-2d)の後方に紫外線ランプ68を配置したものである。
第1~第4の実施形態の各実施例では、インクヘッドユニットは、第1の印刷時にプロセスカラーインクおよびホワイトインクを吐出し、第2の印刷時にクリアーインクを吐出する。しかし、第1および第2の印刷の時に吐出されるインクの種類は、前記実施例に限定されない。
第1~第5の実施形態では、第1の印刷時に吐出されるインクの種類と、第2の印刷時に吐出されるインクの種類とは、一部または全部が異なっていた。しかし、第1の印刷時に吐出されるインクの種類と、第2の印刷時に吐出されるインクの種類とは、同一であってもよい。例えば、インクヘッドユニットは、第1の印刷および第2の印刷の両方において、プロセスカラーインクを吐出してもよい。この場合、記録紙を前方に搬送する時および後方に搬送する時の両方において、プロセスカラーインクを吐出することになる。そのため、多くのプロセスカラーインクを短時間の間に吐出することができ、プロセスカラーインクの濃度または厚みが十分に確保された印刷物を形成することができる。
前記実施形態において、第1の印刷と第2の印刷とは、印刷のモードが同じであってもよいが、異なっていてもよい。次に、第1の印刷と第2の印刷とで印刷のモードが異なる実施形態を説明する。
前記各実施形態では、インクヘッドユニットの前方には紫外線ランプが設けられていなかった。しかし、インクヘッドユニットの前方に紫外線ランプを配置してもよい。例えば図42に示すように、インクヘッドユニット102の側方、後方、前方に、それぞれ紫外線ランプ106、2、3を配置してもよい。
前記各実施形態において、1つまたは複数のインクヘッドの前後方向の位置を変更させる位置変更機構を設けてもよい。例えば、図43に示すように、プロセスカラーインクヘッド103a、クリアーインクヘッド103b、およびホワイトインクヘッド103cを前後方向に移動させるインクヘッド移動機構75を設けてもよい。インクヘッド移動機構75は制御装置50(図43では図示せず。図1参照)によって制御される。図43では、プロセスカラーインクヘッド103aおよびクリアーインクヘッド103bが前方に位置付けられ、ホワイトインクヘッド103cが後方に位置付けられた状態を表している。なお、位置変更機構は、インクヘッドの位置を自動または手動により変更可能なものであればよく、モータ等の動力を用いてインクヘッドを移動させるインクヘッド移動機構75に限られない。
前記各実施形態では、UVインクと、紫外線を照射する照射装置とを用いることとした。しかし、紫外線とは異なる光、例えば、可視光または電子線等を照射する照射装置を用い、当該照射装置が照射する光を受けて硬化するインクを用いることも可能である。また、光を照射する装置の代わりに、熱を加えることによってインクを硬化させる装置を用いることも可能である。
以上のように、前記各実施形態によれば、制御装置50は、媒体を前方へ順次搬送しながらインクヘッドユニットからインクを吐出させる第1の印刷と、媒体を後方へ順次搬送しながらインクヘッドユニットからインクを吐出させる第2の印刷とを行う。前記各実施形態に係るインクジェットプリンタによれば、媒体を後方に引き戻す際にも印刷を行うので、印刷時間の短縮化を図ることができる。
50 制御装置
55 グリッドローラ(搬送機構)
100 インクジェットプリンタ
102 インクヘッドユニット
106 紫外線ランプ(照射装置)
130 キャリッジ(移動機構)
F 前方
Re 後方
M 記録紙(媒体)
Claims (15)
- 媒体に向かってインクを吐出するインクヘッドユニットと、
前記インクヘッドユニットを左右方向に移動させる移動機構と、
前記媒体を前後方向に搬送する搬送機構と、
前記インクヘッドユニット、前記移動機構、および前記搬送機構を制御する制御装置と、を備え、
前記制御装置は、前記媒体を前方へ順次搬送しながら前記インクヘッドユニットからインクを吐出させる第1の印刷と、前記媒体を後方へ順次搬送しながら前記インクヘッドユニットからインクを吐出させる第2の印刷とを行う、インクジェットプリンタ。 - 前記インクヘッドユニットは、第1のインクを吐出する第1インクヘッドと、前記第1のインクと種類の異なる第2のインクを吐出する第2インクヘッドと、を有し、
前記制御装置は、前記第1の印刷のときに前記第1インクヘッドからインクを吐出させ、前記第2の印刷のときに前記第2インクヘッドからインクを吐出させる、請求項1に記載のインクジェットプリンタ。 - 前記第2インクヘッドは前記第1インクヘッドよりも前方または後方に配置されている、請求項2に記載のインクジェットプリンタ。
- 前記制御装置は、前記第1の印刷のときに、前記第1インクヘッドおよび前記第2インクヘッドからインクを吐出させ、前記第2の印刷のときに、前記第1インクヘッドからインクを吐出させず且つ前記第2インクヘッドからインクを吐出させる、請求項3に記載のインクジェットプリンタ。
- 前記制御装置は、前記第1の印刷のときに、前記第1インクヘッドからインクを吐出させ且つ前記第2インクヘッドからインクを吐出させず、前記第2の印刷のときに、前記第1インクヘッドおよび前記第2インクヘッドからインクを吐出させる、請求項3に記載のインクジェットプリンタ。
- 前記第1インクヘッドおよび前記第2インクヘッドのうち少なくとも一方の前後方向の位置を変更する位置変更機構を備えている、請求項3に記載のインクジェットプリンタ。
- 前記第1の印刷と前記第2の印刷とは、印刷のモードが異なっている、請求項1に記載のインクジェットプリンタ。
- 前記第1の印刷と前記第2の印刷とは、前記インクヘッドユニットの移動速度が異なっている、請求項7に記載のインクジェットプリンタ。
- 前記第1の印刷と前記第2の印刷とは、印刷のパス数が異なっている、請求項7に記載のインクジェットプリンタ。
- 前記第1の印刷と前記第2の印刷とは、印刷の解像度が異なっている、請求項7に記載のインクジェットプリンタ。
- 前記第1の印刷と前記第2の印刷とは、前記インクが前記媒体に着弾することによって前記媒体上に形成されるインクドットの寸法が異なっている、請求項7に記載のインクジェットプリンタ。
- 前記インクは、光が照射されると硬化するインクであり、
前記制御装置によって制御され、前記媒体上のインクに光を照射する照射装置を備えている、請求項1に記載のインクジェットプリンタ。 - 前記照射装置は、前記インクヘッドユニットよりも後方に配置された照射体を有している、請求項12に記載のインクジェットプリンタ。
- 前記制御装置は、前記第2の印刷のときに前記照射体を点灯させる、請求項13に記載のインクジェットプリンタ。
- 前記照射装置は、前記インクヘッドユニットと共に左右方向に移動する照射体を有し、
前記第1の印刷と前記第2の印刷とは、前記照射体の点灯パターンが異なっている、請求項12に記載のインクジェットプリンタ。
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ES09829149T ES2719741T3 (es) | 2008-11-28 | 2009-11-27 | Impresora de inyección de tinta |
US13/131,099 US9132638B2 (en) | 2008-11-28 | 2009-11-27 | Inkjet printer |
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WO2019070008A1 (en) * | 2017-10-06 | 2019-04-11 | Ricoh Company, Ltd. | EJECTION APPARATUS, IMAGE FORMING APPARATUS, CURING METHOD, AND PROGRAM |
US11148437B2 (en) | 2017-10-06 | 2021-10-19 | Ricoh Company, Ltd. | Ejecting apparatus, image forming apparatus, curing method utilizing irradeating blocks and computer-readable medium |
WO2022202521A1 (ja) * | 2021-03-24 | 2022-09-29 | 京セラ株式会社 | インクジェット記録装置 |
JPWO2022202521A1 (ja) * | 2021-03-24 | 2022-09-29 | ||
JP7385789B2 (ja) | 2021-03-24 | 2023-11-22 | 京セラ株式会社 | インクジェット記録装置およびインクジェット記録方法 |
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JP5944028B2 (ja) | 2016-07-05 |
JP2016179690A (ja) | 2016-10-13 |
JP5452188B2 (ja) | 2014-03-26 |
JP2015145132A (ja) | 2015-08-13 |
JPWO2010061904A1 (ja) | 2012-04-26 |
JP2018069738A (ja) | 2018-05-10 |
EP2360018A4 (en) | 2018-02-21 |
ES2719741T3 (es) | 2019-07-12 |
JP2010149516A (ja) | 2010-07-08 |
EP2360018B1 (en) | 2019-03-20 |
US9132638B2 (en) | 2015-09-15 |
EP2360018A1 (en) | 2011-08-24 |
JP5722423B2 (ja) | 2015-05-20 |
JP5731689B2 (ja) | 2015-06-10 |
JP2018108736A (ja) | 2018-07-12 |
US20110235069A1 (en) | 2011-09-29 |
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JP6271640B2 (ja) | 2018-01-31 |
JP2014073686A (ja) | 2014-04-24 |
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