WO2006025119A1 - インクジェット方式の印刷機 - Google Patents
インクジェット方式の印刷機 Download PDFInfo
- Publication number
- WO2006025119A1 WO2006025119A1 PCT/JP2004/013751 JP2004013751W WO2006025119A1 WO 2006025119 A1 WO2006025119 A1 WO 2006025119A1 JP 2004013751 W JP2004013751 W JP 2004013751W WO 2006025119 A1 WO2006025119 A1 WO 2006025119A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- clamp
- printing drum
- printing
- force
- Prior art date
Links
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
- 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
- B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
- B41J13/22—Clamps or grippers
- B41J13/223—Clamps or grippers on rotatable drums
Definitions
- the present invention relates to an ink jet printer that performs printing on a sheet such as a sheet using ink jet.
- Inkjet printing in which an inkjet head is provided around the outer periphery of a rotating printing drum, and the inkjet head force is also ejected onto a sheet of paper or the like held on the peripheral surface of the printing drum.
- the machine is also known for its power.
- this gap is very small, so if the sheet is not sufficiently held on the peripheral surface of the printing drum, high-precision printing cannot be performed, and the sheet contacts the head and the sheet does not move. There is a risk of smudges on the printed surface.
- the sheet is preferably used as a printing drum in a closed place such as the center of the sheet.
- the edge force also sucks gas at the sheet edge, negative pressure cannot be maintained, and the sheet edge cannot be effectively absorbed and held.
- the sheet is an absorptive sheet such as paper, the ink applied by the ink jet head penetrates into the sheet due to the negative pressure applied to the sheet, and the color changes depending on the degree of penetration, resulting in stable print quality. If you can't get it.
- the sheet holding method using a mechanical press such as a clamp has a feature that the end of the sheet can be pressed to prevent the sheet end from being lifted. There is a problem.
- the clamping device having a general structure is configured to open and close in the radial direction of the printing drum, a tensile force cannot be applied to the sheet, and the sheet is slackened and the printing drum is rotated. The surface force is lifted, and there is an inconvenience that it is impossible to obtain a stable mounting state in which the entire sheet is in close contact with the peripheral surface of the printing drum.
- An apparatus described in Japanese Patent Laid-Open No. 7-195780 is known as an apparatus for applying tension to a sheet using a clamp.
- a part of a rotary drum corresponding to the rear end portion of the sheet is divided and movable. Due to the structure that imparts tension, it is suitable for general-purpose printing presses that print sheets of various sizes at high speed.
- the clamp pulls both ends extending in the axial direction of the printing drum toward the center of the drum and presses the sheet, so when the thick sheet is pressed, the clamp runs obliquely on the end of the sheet, The clamp bends and undulates on the sheet, and the center in the length direction of the clamp protrudes greatly outward in the radial direction of the printing drum surface. For this reason, the clamp must be rigid and thick. In this case, the inkjet head and mark A gap of appropriate dimensions cannot be secured between the peripheral surfaces of the printing drum.
- An object of the present invention is to provide an ink jet type printing machine capable of holding a sheet extremely stably on a peripheral surface of a printing drum so that printing can be performed with high accuracy and high speed. is there.
- a printing drum that rotates and an inkjet head provided on the outer periphery of the printing drum are provided, and printing is performed from nozzles of the inkjet head.
- the printing drum holds a sheet holding mechanism that holds a sheet leading end portion, and a sheet trailing end portion that is a printing drum.
- a clamp that can be opened and closed to be pressed against the circumferential surface of the sheet, an opening and closing mechanism that opens and closes the clamp, and a position that adjusts the position of the clamp together with the opening and closing mechanism in the circumferential direction of the printing drum corresponding to the rear end position of the sheet having a different length.
- a structure is provided in which a changing mechanism and an attracting force generating means for attracting the clamp to the outer peripheral surface of the printing drum together with the rear end of the sheet are employed.
- the clamp is formed by a strip-like thin plate extending in the axial direction of the printing drum, and the size of the clamp and the thickness of the sheet is taken into account and the outer circumference of the printing drum and the inkjet.
- the thickness of the clamp is set to be smaller than the gap formed between the heads so that the sheet can be held without interfering with the inkjet head.
- the sheet holding force by the sheet holding mechanism is stronger than the tension in the tangential direction of the printing drum circumferential surface applied to the sheet during the sheet holding operation of the clamp in the third invention,
- the friction force caused by the contact between the sheet and the clamp is set to be larger than the friction force caused by the contact between the sheet and the surface of the printing drum, and the clamp removes slack by applying tension to the sheet, the sheet holding mechanism force is released from the leading edge of the sheet. It was like that.
- the printing drum when the printing drum is provided with a plurality of sheet holding mechanisms at equal intervals in the drum circumferential direction, and a clamp is provided corresponding to each holding mechanism. Multiple sheets can be printed at the same time, and the printing efficiency can be improved.
- an outer periphery of a printing drum is constituted by an adsorbent having magnetic attraction, and the clamp is made of a magnetic material. It is formed and the clamp is adsorbed by an adsorbent, and a large number of suction holes are formed on the entire outer periphery of the printing drum, and a suction head is provided inside the printing drum. Therefore, it is possible to adopt a construction force that applies a suction force to the suction hole closed by the clamp so that the clamp is attracted to the peripheral surface of the printing drum.
- the outer periphery of the printing drum is detachable from the peripheral surface of the printing drum, and rotates so that the sheet with the leading end held by the sheet holding mechanism is brought into close contact with the surface of the printing drum at the time of contact. If a free pressing roller is provided, the sheet can be pressed against the outer periphery of the printing drum by the pressing roller, so that the sheet can be more effectively brought into close contact with the printing drum.
- the clamp in the closed position is adjusted according to the sheet size, and the trailing end of the sheet is pressed onto the surface of the printing drum by the suction mechanism. It is possible to securely hold the rear end of the sheet and to use a thin metal sheet with low rigidity as a clamp. For this reason, since the gap between the inkjet head and the sheet can be set very small, high quality printing becomes possible. In addition, since the holding force can be reliably generated even if the area where the rear end of the sheet is pressed by the clamp is small, printing can be performed widely as an effective printing process rear up to the vicinity of the rear end of the sheet.
- the clamp for pressing the trailing edge of the sheet is moved from the open position to the closed position, the clamp is moved to the trailing side in the rotation direction of the printing drum, and the frictional force due to contact with the clamp causes the sheet to move. Since a tensile force is applied to the rear edge, the sheet can be held in a stable state where the entire sheet is in close contact with the peripheral surface of the printing drum, and printing is performed with high accuracy by inkjet. Can do.
- FIG. 1 is a partially cutaway front view showing an embodiment of a printing machine according to the present invention.
- FIG.2 Vertical side view of the printing drum shown in Fig.1
- FIG. 6 Longitudinal front view showing another example of suction means
- the printing press includes a rotating printing drum 1, a sheet feeding device 2 that supplies a sheet S such as a sheet to the printing drum 1, and an outer periphery of the printing drum 1.
- An ink jet head 3 that performs printing by jetting ink onto the sheet S that is provided on the upper surface and is held on the circumferential surface of the printing drum 1 and conveyed in the circumferential direction, and the printed sheet S are received from the printing drum 1 and discharged.
- a paper discharge device 5 that conveys the paper part 4 is provided.
- the sheet feeding device 2 continuously conveys the sheets S one by one by the sheet compressor 2a in one direction, and moves the leading end of the sheet S sent to the discharge end of the sheet competitor 2a to the swing side of the swing gripper 2b. Grasp at the end, swing the swing gripper 2b toward the transfer cylinder 2c rotating in one direction, and transfer the sheet S between the gripping claw provided on the transfer cylinder 2c and the swing gripper 2b. At the same time, the sheet S is transferred between the transfer cylinder 2c and the printing drum 1.
- the inkjet head 3 has a nozzle surface 3a, and a gap G of about lmm is provided between the nozzle surface 3a and the peripheral surface of the printing drum 1!
- the ink jet head 3 performs printing on the sheet S by ejecting ink from a large number of nozzles (not shown) provided on the nozzle surface 3 a toward the peripheral surface of the printing drum 1.
- the paper discharge device 5 includes a chain delivery in which a plurality of gripper bars 5c are mounted at equal intervals on a chain 5b that is hung on a paper take-up cylinder 5a.
- the sheet S held by the gripper bar 5c is conveyed to the paper discharge unit 4 by the movement of the chain 5b, and the holding of the sheet S is released.
- the printing drum 1 has a drum shaft 10 at both ends, and the drum shaft 10 is rotatably supported by a pair of frames 11 of the printing machine.
- a gear 12 is attached to one end of the printing drum 1, and the printing drum 1 is rotated in the direction of the arrow in FIGS. 1 and 4 by transmitting drive torque to the gear 12.
- Groove-shaped recesses 13 extending in the axial direction are formed at equal intervals in the circumferential direction on the outer periphery of the printing drum 1, and claw shafts 14 are provided in the respective recesses 13.
- the claw shaft 14 is rotatably supported by both end wall portions of the concave portion 13, and a plurality of gripping claws 15 are attached to a portion of the claw shaft 14 located in the concave portion 13.
- the gripping claw is described as an example of the sheet holding mechanism, but methods such as negative pressure and electrostatic force can also be used as long as the mechanism can appropriately hold the leading end of the sheet.
- the holding claw 15 is opened and closed by a cam mechanism 16 as an opening / closing mechanism.
- the cam mechanism 16 has one end of a roller arm 17 attached to each end of the claw shaft 14, and a claw opening / closing mechanism in which a rotatable roller 18 supported on the other end of each roller arm 17 is attached to the inner surface of the frame 11. Elastically contact the outer periphery of the cam 19 via a spring (not shown), and rotate the printing drum 1 to roll the roller 18 along the outer periphery of the pawl opening / closing cam 19 to open and close the gripper 15.
- the left and right claw opening and closing cams 19 are conjugate cams.
- a cam mechanism is used as the clamp opening / closing mechanism, but a system such as a motor or solenoid can be used as long as it is a mechanism for opening / closing the clamp.
- the gripping pawl 15 is normally held in a closed state, and when the sheet S needs to be supplied while the printing drum 1 is rotating, the gripping pawl 15 is temporarily moved by the operation of the pawl opening / closing cam 19 at a position facing the transfer cylinder 2c.
- the transfer cylinder 2c force is also transferred to the sheet S.
- the gripping pawl 15 is temporarily opened and closed by the operation of the pawl opening and closing cam 19 at a position facing the paper take-up cylinder 5a.
- the force is switched to the open state, the sheet S is delivered to the gripper bar 5c of the paper discharge device 5! /.
- each peripheral surface between the recesses 13 of the printing drum 1 is an adsorbent 20 that is a sheet-like magnetic rubber (rubber magnet) having a magnetic attraction force of 3.2 mm in thickness. It is constituted by.
- the front end of the adsorbent 20 in the rotation direction of the printing drum 1 is fixed to the anvil 20a and the rear end is fixed to the bar 20b by an adhesive, respectively.
- the anvil 20a and the bar 20b are detachable from the printing drum 1. Fixed and replaceable adsorbent 20 I am doing it.
- the surface of the adsorbent 20 is polished and finished in a flat shape, and the gap with the inkjet head 3 can be accurately maintained by being in close contact with the printing drum 1 that is polished and finished in a cylindrical shape. Note that the accuracy of the gap can be ensured even if the adsorbent 20, which is a sheet-like magnetic rubber, is adhered and held on the surface of the printing drum 1 and then polished into a cylindrical shape. Furthermore, it is conceivable that the printing drum 1 itself is made of a magnetic material without using an adsorbent as a separate part.
- the magnetic rubber it is necessary to use a rubber base material having corrosion resistance to the ink to be used or to coat the surface with corrosion resistance.
- a clamp 21 that presses the rear end portion of the sheet S with the leading end held by the gripping claws 15 on each of the adsorbent bodies 20 against the outer periphery of the adsorbent body 20 is provided.
- the clamp 21 is formed of a stainless steel thin plate SUS304C SP made of a magnetic material and having a thickness of 0.2 mm and a width of 20 mm, and can be adsorbed by the adsorbent 20.
- the thinner clamp 21 is curved along the outer periphery of the printing drum 1 and can immediately press the sheet S securely, while the suction force by magnetic force is larger when the clamp thickness is thicker. Therefore, a stainless steel plate with a thickness of 0.05-0.5 mm, preferably 0.1-0.3 mm is used as the clamp 21.
- the material of the clamp is stainless steel because of its magnetic force, strength, and corrosion resistance, but depending on the application, spring steel with strong magnetism can be used.
- the clamp 21 extends long as a single piece in the axial direction of the printing drum 1, and both ends thereof have a U-shape bent at right angles to the inner direction of the printing drum 1.
- This bent portion is inserted into slots 23 provided at both ends of the outer periphery of the printing drum 1, and the tip end portion of the clamp arm 24 is connected to each bent portion.
- one end of the short link 25 is connected to the rear end of the clamp arm 24, and one end of the long link 26 is connected to the arm rear end from the connection position.
- the other end of the short link 25 is supported by a first shaft 27, and the first shaft 27 is rotatably supported by two annular plates 28 provided inside the printing drum 1. As a center, the short link 25 can swing.
- the other end portion of the long link 26 is supported by the second shaft 29, and the second shaft 29 is rotatably supported by the annular plate 28, and the long link 26 is centered on the second shaft 29. It can be swung freely.
- the two annular plates 28 are connected to each other by a plurality of stays 30 passed between the annular plates 28, and rotate and slide around an operation shaft 44 concentric with the axis of the printing drum 1.
- a plurality of clamps 21 are simultaneously adjusted in the circumferential direction by rotating the annular plate 28 so as to be movable.
- the rear end portion of the sheets S having different sizes can be pressed.
- the clamp 21 is opened and closed by a cam mechanism 31 shown in FIG.
- the cam mechanism 31 has one end of a roller arm 32 attached to each end of the second shaft 29 facing the outside from both ends of the printing drum 1, and is rotatable on the other end of each roller arm 32.
- the roller 33 is elastically brought into contact with the outer periphery of the clamp opening / closing cam 34 attached to the inner surface of the frame 11 via a spring (not shown), and the roller 33 is rotated by the rotation of the printing drum 1 so that the outer periphery of the clamp opening / closing cam 3 4
- the clamp 21 is opened and closed by rolling along the axis.
- the left and right clamp opening / closing cams 34 are conjugate cams.
- the short link 25 connected to the clamp arm 24 is swingable around the first shaft 27 as described above, while the long link 26 is centered around the second shaft 29. Since the clamp 21 in the open position is moved to the closed position where it abuts against the peripheral surface of the sheet-like magnetic rubber 20, the clamp 21 rotates the printing drum 1 as shown by the arrow in FIG. Direction After moving to the leading side, it moves toward the following side and is closed.
- the clamp 21 is adjusted in advance according to the size of the sheet S so as to straddle the rear end portion of the sheet S and the peripheral surface of the adsorbent 20.
- the annular plate 28 for adjusting the position of the clamp 21 in the circumferential direction is locked to the printing drum 1 by a lock mechanism 35 shown in FIG.
- the lock mechanism 35 is provided with a braking plate 36 that rotates integrally with the printing drum 1 on the outer side of one annular plate 28, a pad 37 on the other side of the annular plate 28, and the pad 37 is connected to the annular plate 28. Move it toward 28 and press the annular plate 28 against the brake plate 36.
- the lever 40 In order to move the pad 37 toward the annular plate 28, the lever 40 is swingably supported on the support piece 38 fixed to the brake plate 36 via the pin 39, and one end of the lever 40 is here.
- Part The pad 37 is attached to the other end, and the other end of the lever 40 and the brake plate 36 are connected by a two-contact link 41.
- One end of the link 42 is connected to the bent portion of the two-contact link 41, and the other end of the link 42 is connected.
- the L-shaped arm 43 connected to the part is attached to the operating shaft 44 arranged on the axis of the printing drum 1, and the pad 37 is moved relative to the annular plate 28 by the axial movement of the operating shaft 44. It is doing so.
- a pressing roller 45 is provided on the upper side of the transfer drum 2 c in the paper feeding device 2.
- the presser roller 45 is detachable from the outer periphery of the printing drum 1, and the sheet S that is conveyed in the circumferential direction of the printing drum 1 by being held by the gripping claws 15 is contacted with the circumferential surface of the printing drum 1. It comes to adhere.
- the printing press shown in the embodiment has the above-described structural force.
- the sheet S is supplied to the printing drum 1 by the sheet feeding device 2, the leading end of the sheet S is held by the gripping claws 15, and the printing is performed.
- the drum 1 is conveyed in the circumferential direction by the rotation.
- the presser roller 45 is disposed at a position in contact with the printing drum 1. For this reason, the sheet S conveyed in the circumferential direction of the printing drum 1 is pressed against the circumferential surface of the printing drum 1 by the pressing roller 45 and is brought into close contact with the circumferential surface of the drum.
- the clamp 21 When the sheet S is in a state along the peripheral surface of the printing drum 1, the clamp 21 is brought into a closed position in contact with the peripheral surface of the printing drum 1 by the action of the cam mechanism 31 for opening and closing the clamp.
- the clamp 21 moves to the leading side in the rotational direction of the printing drum 1 by the swing of the short link 25 and the long link 26, and then moves to the trailing side to be in the closed state.
- a tensile force is applied to the rear end portion by contact with the clamp 21.
- the relative positional relationship between the sheet S and the clamp 21 when the sheet is supplied will be described.
- the clamp 21 is at the position 21a in FIG. It is in a position where it does not interfere with the rear end of the camera.
- the radial force of the printing drum 1 and the upward force of the rear end of the sheet S are pressed.
- the central portion of the clamp 21 is attracted by the sheet-like magnetic rubber 20 and curved in a concave shape, and a part of the clamp 21 contacts the sheet-like magnetic rubber 20 with the sheet S interposed therebetween.
- the sheet S can be reliably held in a stable state in which the entire sheet S is in close contact with the peripheral surface of the printing drum 1, so that the ink jet head 3 is attached to the sheet.
- An appropriate gap can be set for S and high-precision printing can be performed, and the clamp 21 can shorten the sheet presser dimension that holds the sheet S, so printing is performed near the rear edge of the sheet S. be able to.
- the sheet presser size is 3 to 200 times, preferably 20 to 100 times the paper thickness, the paper can be pressed stably and the effective printing range can be widened.
- the sheet S When printing is performed on the sheet S, the sheet S is transferred between the printing drum 1 and the paper discharge device 5.
- the gripper 15 of the printing drum 1 When the gripper 15 of the printing drum 1 is released and the gripper bar 5c holds the leading edge of the sheet S during the transfer, the trailing edge of the sheet S rotates to a position where the circumferential force of the printing drum 1 is also separated.
- the cam mechanism 31 is operated by the opening / closing force 34 set at the position for opening the force clamp, and the clamp 21 is released to release the presser of the rear end of the sheet S.
- the dissociation force of the clamp 21 by the cam mechanism 31 is larger than the attraction force of the adsorbent 20 to the clamp 21.
- the adsorbent is composed of an electromagnet and the adsorbing force is turned on / off. The clamp can be opened very easily.
- the printed sheet S is conveyed to the paper discharge unit 4 by the paper discharge device 5 and discharged.
- a magnetic adsorber is attached to the peripheral surface of the printing drum 1, and the clamp 21 is adsorbed by the magnetic adsorbent.
- the adsorbing means for adsorbing the clamp 21 is not available. It is not limited to.
- a plurality of suction holes 50 arranged in the axial direction at equal intervals in the circumferential wall of the printing drum 1 are formed in the circumferential direction of the printing drum 1,
- the suction head 51 may be provided, and when the clamp 21 is closed, the suction hole 50 closed by the clamp 21 may be sucked by the suction head 51.
- the suction head 51 and the clamp 21 can be adjusted in position in the circumferential direction in the same phase so that sheets S of different sizes can be accommodated.
- FIG. 8 shows an example of the positional relationship between the clamp 21, the suction hole 50, and the suction cup 52 as viewed from the upper part of the printing drum.
- Places 50 are arranged at 1 Om m pitch P in the circumferential direction of the printing drum, and 11 rows are arranged in the axial direction. Place each offset.
- the suction head 51 is located directly under the clamp 21 with a width of 20 mm, inside the printing drum 1 so as to be movable in the same phase as the clamp 21, the suction cup 52 has an effective suction diameter of 15 mm, and the suction hole 50 has the same axial distance. Arranged. With such an arrangement, it is possible to apply a suction force to at least one of the circumferential rows of the suction holes 50 immediately below the clamp 21 regardless of the phase of the clamp, and reliably attract the clamp. Therefore, it is possible to handle sheets of various sizes.
- the clamp 21 is moved to the rear side in the rotation direction of the printing drum 1 so as to pull the rear end portion of the sheet S whose front end portion is held by the holding claw 15. Moved By providing the pressing roller 45, the sheet S can be brought into close contact with the circumferential surface of the printing drum 1 by the pressing roller 45, so that the clamp 21 can be opened and closed in the radial direction of the printing drum 1. Even if it is set up.
Landscapes
- Handling Of Cut Paper (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Ink Jet (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/661,635 US7909454B2 (en) | 2004-09-02 | 2004-09-21 | Inkjet printing press |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004255834A JP2006069742A (ja) | 2004-09-02 | 2004-09-02 | インクジェット方式の印刷機 |
JP2004-255834 | 2004-09-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006025119A1 true WO2006025119A1 (ja) | 2006-03-09 |
Family
ID=35999782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/013751 WO2006025119A1 (ja) | 2004-09-02 | 2004-09-21 | インクジェット方式の印刷機 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7909454B2 (ja) |
JP (1) | JP2006069742A (ja) |
WO (1) | WO2006025119A1 (ja) |
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JP4963683B2 (ja) * | 2008-03-31 | 2012-06-27 | 富士フイルム株式会社 | インクジェット記録装置 |
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JP5125744B2 (ja) * | 2008-05-12 | 2013-01-23 | 富士ゼロックス株式会社 | 画像形成装置 |
JP5335282B2 (ja) * | 2008-05-20 | 2013-11-06 | 富士フイルム株式会社 | インクジェット記録装置 |
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JP5422458B2 (ja) * | 2010-03-25 | 2014-02-19 | 富士フイルム株式会社 | 媒体搬送装置及び画像形成装置並びに媒体搬送方法 |
JP2012008498A (ja) * | 2010-06-28 | 2012-01-12 | Fuji Xerox Co Ltd | 画像形成装置 |
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JP6864521B2 (ja) * | 2017-03-31 | 2021-04-28 | キヤノン株式会社 | 記録装置および制御方法 |
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JPH10193719A (ja) * | 1997-01-08 | 1998-07-28 | Tec Corp | 媒体回転保持装置 |
JP2001019217A (ja) * | 1999-07-08 | 2001-01-23 | Matsushita Graphic Communication Systems Inc | 画像記録装置及びこれに用いるドラム |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5357734A (en) | 1976-11-04 | 1978-05-25 | Fujitsu Ltd | Analog-to-digital converter |
CA1140998A (en) | 1978-10-05 | 1983-02-08 | Jerry W. Miller | Dc free encoding for data transmission including limited look-ahead means |
DE69719498T2 (de) | 1996-12-19 | 2003-11-20 | Toshiba Tec K.K., Tokio/Tokyo | Tintenstrahldrucker |
US6465154B1 (en) * | 2000-10-17 | 2002-10-15 | Howard A. Fromson | Web fed external drum printing plate imaging |
-
2004
- 2004-09-02 JP JP2004255834A patent/JP2006069742A/ja active Pending
- 2004-09-21 US US11/661,635 patent/US7909454B2/en not_active Expired - Fee Related
- 2004-09-21 WO PCT/JP2004/013751 patent/WO2006025119A1/ja active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5357734U (ja) * | 1976-10-18 | 1978-05-17 | ||
JPS55159659U (ja) * | 1979-05-04 | 1980-11-17 | ||
JPS63209861A (ja) * | 1987-02-26 | 1988-08-31 | Toshiba Corp | 画像形成装置のグリツパ |
JPH0254292A (ja) * | 1988-08-19 | 1990-02-23 | Ricoh Co Ltd | 転写ドラム |
JPH02147538A (ja) * | 1988-11-28 | 1990-06-06 | Minolta Camera Co Ltd | 給紙装置 |
JPH04265782A (ja) * | 1991-02-20 | 1992-09-21 | Deyupuro Seiko Kk | 多色印刷機 |
JPH10175337A (ja) * | 1996-12-19 | 1998-06-30 | Tec Corp | インクジェットプリンタ |
JPH10193719A (ja) * | 1997-01-08 | 1998-07-28 | Tec Corp | 媒体回転保持装置 |
JP2001019217A (ja) * | 1999-07-08 | 2001-01-23 | Matsushita Graphic Communication Systems Inc | 画像記録装置及びこれに用いるドラム |
Also Published As
Publication number | Publication date |
---|---|
US7909454B2 (en) | 2011-03-22 |
JP2006069742A (ja) | 2006-03-16 |
US20080098910A1 (en) | 2008-05-01 |
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