WO1993021017A1 - Image transfer apparatus - Google Patents
Image transfer apparatus Download PDFInfo
- Publication number
- WO1993021017A1 WO1993021017A1 PCT/JP1993/000477 JP9300477W WO9321017A1 WO 1993021017 A1 WO1993021017 A1 WO 1993021017A1 JP 9300477 W JP9300477 W JP 9300477W WO 9321017 A1 WO9321017 A1 WO 9321017A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- transfer cylinder
- transfer
- image receptor
- claw
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 30
- 210000000078 claw Anatomy 0.000 claims description 52
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000758 substrate Substances 0.000 abstract 5
- 239000010410 layer Substances 0.000 description 10
- 238000010409 ironing Methods 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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 image transfer apparatus for transferring an image formed on a photosensitive layer of an image forming material to an image receptor, the image transfer apparatus including an image receptor attaching apparatus capable of holding the image receptor with a uniform pressure. . Further, even when the transfer cylinder to which the image receptor is attached is heated, the image receptor is wavy, the insertion length in the image receptor clamp when the image receptor is attached due to the curl is uneven, and the clamping force is not sufficient.
- the image transfer device equipped with an image receptor attaching device capable of attaching an image receptor easily and quickly without generating uniformity is sought. Background art
- an image forming material having a photosensitive layer coated on one side of a support is subjected to image exposure.
- the image formed on the photosensitive layer is transferred to an image receptor, such as paper, under heating, generally at about 1 oo e c, to produce a single-color or multi-color pre-proof proof suitable for proof printing or the like.
- the image forming material includes a support, a photosensitive layer formed on one surface of the support, and a protective film.
- a thin film or sheet made of a material such as cellulose acetate, polystyrene, polyvinyl chloride, or polyethylene terephthalate is used.
- an impression cylinder having an image forming material attached thereto and a transfer cylinder having an image receptor attached thereto are provided so that the photosensitive layer of the image forming material and the image receptor face each other.
- An apparatus has been generally proposed in which a cylinder is contact-pressed and an image formed on a photosensitive layer is transferred to an image receptor in a nip between the cylinders.
- the image receptor such as paper is heated in advance, and When the photosensitive layer of the material is pressed and the surface image formed on the photosensitive layer is transferred to paper, the transfer of the image proceeds smoothly and a beautiful printed matter can be obtained. Therefore suitably the transfer cylinder surface within the transfer cylinder to affixing the Menzo ⁇ receptor, for example, to dispose the pressurized ripening means for heating the longitudinal 1 0 0 e C is usually.
- a clamp composed of a pair of claws and a claw seat extended in the direction of the transfer cylinder axis is installed in a partially cutout portion of the surface of the transfer cylinder, and the clamp is used for image formation.
- Devices with a jfi receptor have been used in the past.
- This clamp is usually made of metal in order to increase the pressure on the pawls and pawl seats sufficiently. For this reason, the heat of the heated transfer cylinder is also transmitted to the clamp, and the curvature of the claw and the claw seat progresses during use, which often makes it difficult to hold the surface image receptor with uniform pressure.
- the image receptor itself is also a sheet of paper or the like that easily generates curl or the like due to heat
- the curvature of the nail and the nail seat may be changed.
- improper mounting of the receiver for example, double folding of paper in the clamps, etc., occurred.
- wrinkles are generated in the vicinity of the grip portion, or the inaccurate length of the image receptor inserted into the nail is caused.
- wrinkles may be generated on the edges of the produced printed material, or uneven gripping pressure may be caused by the nail.
- the present invention provides an image transfer device such as a device for preparing a prepress proof, in which a soft sheet-like material such as an image receiver is attached and easily removed, and an image receiving device is provided with a uniform pressure during use.
- An object of the present invention is to provide a surface image transfer device including an image receptor attaching device capable of holding a body.
- the present invention provides an image receiving apparatus which can quickly insert a soft sheet-like material such as an image receptor into a nail with a certain length without wrinkles, and can easily attach and detach the sheet-like material. It is an object of the present invention to provide an image transfer device including a body attachment device. Disclosure of the invention
- the present invention includes an impression cylinder having an image forming material attached thereto and a transfer cylinder having an image receptor attached thereto, and rotating the impression cylinder and the transfer cylinder to move the image forming material and the image receptor between the impression cylinder and the transfer cylinder.
- the image receiving device attachment device is a device including a claw and a claw seat for holding the upper side and the lower side of the image receptor on the surface of the transfer drum over the entire width direction, respectively.
- a nail and a claw seat for gripping an image receptor provided in a notch portion provided on a part of the surface of the transfer cylinder in the axial direction of the transfer cylinder, and the claw and the nail seat are arranged in the axial direction.
- an image transfer device comprising at least two divided claws and at least two claw seats, and a gap provided in the axial direction between the claw seats.
- the present invention provides an image transfer apparatus characterized in that a stopper for positioning the image receptor is provided between claws divided in the axial direction of the transfer cylinder.
- FIG. 1 is a schematic cross-sectional view of an image transfer device including an impression cylinder including an image attachment device of the present invention for attaching an image forming material and a transfer cylinder for attaching an image receptor such as paper.
- FIG. 2 shows a partially enlarged view of the upper side attachment device of the image receptor.
- FIG. 1 shows the configuration of an image transfer device used in the present invention.
- a notch 2 is provided in the surface of the transfer cylinder 1, and the upper side (holding side) of the image receptor is provided in the notch 2. (Hook side) Install a clamp consisting of nails 5 and nail seats 6 as attachment means. The nails 3 and 5 are driven manually or electrically.
- An example of the configuration of the impression cylinder 8 that is provided with a drive shaft 7 that can be driven by means and that closes the pawl simply by rotating the drive shaft will be described with reference to FIG.
- the impression cylinder & is partially provided with a cutout portion 9, in which the blanket 10 wound on the surface of the impression cylinder 8 is fixed by blanket fixing means 11.
- An inclined portion 12 is provided between the partially notched portion 9 and the surface of the impression cylinder (circumferential surface), and a pin bar 13 is provided in the inclined portion.
- the pin bar 13 has a height such that its tip does not protrude beyond the circumferential surface of the impression cylinder 8. This is to prevent the pin bar 13 or the surface of the transfer cylinder 1 from being damaged when the impression cylinder 8 and the transfer cylinder 1 rotate.
- the magnet sheet 14 may be rotatably mounted in the partially notched portion 9. This is because the image forming material is more securely fixed to the surface of the impression cylinder.
- Adhesive tape 15 is provided on the surface of the impression cylinder near the inclined portion 12 where the pin bar 13 is installed on the impression cylinder surface and near the other inclined portion 12 of the partially cutout portion 9.
- the magnet sheet 14 When the magnet sheet 14 is tilted in the direction opposite to the arrow, it does not reach the adhesive tape 15 but has a width sufficient to cover the pin bar 13.
- Through holes corresponding to the pin bars 13 are provided on the upper side of the image forming material, and after inserting these through holes into the pin bars 13, the surface image forming material is suppressed by the magnet sheet 14. Then, the upper side and lower side of the image forming material are fixed to the surface of the impression cylinder with the adhesive tape 15.
- a tray is installed that allows the tray tips 17 and 18 to be close to the transfer cylinder surface and the impression cylinder surface by rotating around the fulcrum 16.
- a surface image receptor or a surface image forming material is placed on the tray, and the work of mounting or discharging the surface image receptor or the image forming material is facilitated.
- An ironing roller 19 that can freely contact the surface of the transfer cylinder 1 and an ironing roller 20 that can freely contact the surface of the impression cylinder 8 may be provided. The ironing roller 19 is effective in that when the image receptor is attached to the transfer drum, the image receptor is brought into close contact with the surface of the transfer drum, and wrinkles and slack of the image receptor are eliminated.
- FIG. 2 is a partially enlarged view of an upper side (holding side) attachment device of an image receptor including a holding side nail 3 and a holding side nail seat 4.
- the claw seat 4 is divided into a plurality of pieces in the axial direction of the transfer cylinder 1, and a gap is provided between each claw seat. This gap prevents the claw seat from bending due to thermal expansion and contraction.
- the nail 3 is also divided into a plurality of pieces in the axial length direction of the transfer cylinder 1, and a gap is provided between each nail. This gap prevents the nail from bending due to heat.
- the pawls 3 are simultaneously driven by a drive shaft 7 penetrating each pawl.
- An attachment angle adjusting bolt 21 for a claw screwed to the claw 3 is provided in the vicinity of the claw 3 on the drive shaft side, and the attachment angle of the claw 3 to the drive shaft 7 is adjusted for each claw, and the image receptor is provided by the claw. It is preferable to be able to adjust the gripping pressure of each of them individually.
- the claw 5 and the claw seat 6 of the lower side image receptor attaching device may have the same structure as the upper side attaching device. Further, preferably, a plurality of image receptor detection sensors 22 may be provided on the gripper side claw seat 4. This is to confirm the insertion length of the image receptor in the clamp.
- a surface layer made of an elastic resin may be provided on the image receptor side of the nail seat and on the image receptor side of the Z or the nail to ensure that the image receptor is gripped.
- An image receptor (not shown) is gripped on the upper side by a clamp comprising a claw 3 and a claw seat 4 provided in a partially cutout portion 2 of the transfer cylinder 1, and then the transfer cylinder 1 is moved in an arrow direction ( (Fig. 1) and the lower side is gripped by the clamp consisting of the claw 5 and the claw seat 6, and attached to the transfer cylinder 1.
- the pawls 3, 5 are actuated by a drive shaft 7.
- a plurality of pawl seats 4 are provided with a gap in the axial direction of the transfer cylinder 1.
- the nail 3 is also divided and installed in the axial direction.
- the curvature of the nail and the nail seat due to heat can be prevented, and the image receptor can always be gripped with a uniform pressure.
- the nail 5 and the nail seat 6 may have the same structure as the nail 3 and the nail seat 5.
- the plurality of claws 3 divided in the axial length direction of the transfer cylinder 1 are provided with a drive shaft 7 that penetrates each of the claws, so that the claws can be driven simultaneously. Thereby, even if the nail is divided, each nail can be driven at the same time, so that the mounting operation of the surface image receptor is simple.
- the image receiving The gripping length of the body with the nail 3 and the nail seat 4 can be quickly and uniformly fixed.
- the surface image receptor is gripped while pulling the image receptor, there is no need to provide a positioning stopper.
- a sensor for detecting a surface image receptor may also be installed on the claw seat 6 on the side of the mouth.
- a surface image receptor attached to a transfer cylinder and an image forming material attached to an impression cylinder are introduced into a nip of both cylinders to form a photosensitive layer of the surface image forming material. This is achieved by pressing the surface image formed on the image receiving member against the image receiving member.
- an image transfer device S provided with an image receptor attaching device capable of holding an image receptor is provided.
Landscapes
- Photographic Developing Apparatuses (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/157,202 US5533451A (en) | 1992-04-13 | 1993-04-13 | Image transfer apparatus with transfer drum clamping mechanism |
EP93908089A EP0593780B1 (en) | 1992-04-13 | 1993-04-13 | Image transfer apparatus |
CA002111201A CA2111201A1 (en) | 1992-04-13 | 1993-04-13 | Image transfer apparatus |
DE69305475T DE69305475T2 (de) | 1992-04-13 | 1993-04-13 | Bildübertragungsgerät |
AU39047/93A AU664616B2 (en) | 1992-04-13 | 1993-04-13 | Image transfer apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4/119676 | 1992-04-13 | ||
JP4119674A JP2906825B2 (ja) | 1992-04-13 | 1992-04-13 | 画像受容体用添着装置 |
JP4119676A JP2970208B2 (ja) | 1992-04-13 | 1992-04-13 | 画像受容体用添着装置 |
JP4/119674 | 1992-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993021017A1 true WO1993021017A1 (en) | 1993-10-28 |
Family
ID=26457359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/000477 WO1993021017A1 (en) | 1992-04-13 | 1993-04-13 | Image transfer apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US5533451A (ja) |
EP (1) | EP0593780B1 (ja) |
AU (1) | AU664616B2 (ja) |
CA (1) | CA2111201A1 (ja) |
DE (1) | DE69305475T2 (ja) |
WO (1) | WO1993021017A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011091571A (ja) * | 2009-10-21 | 2011-05-06 | Olympus Imaging Corp | 動画像作成装置及び動画像作成方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55159658U (ja) * | 1979-05-04 | 1980-11-17 | ||
JPS63249676A (ja) * | 1987-04-03 | 1988-10-17 | Toshiba Corp | 画像形成装置 |
JPH0183563U (ja) * | 1987-11-20 | 1989-06-02 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3768406A (en) * | 1972-07-03 | 1973-10-30 | Polygraph Leipzig | Sheet gripper |
CS185093B1 (en) * | 1976-08-16 | 1978-09-15 | Arnost Cerny | Looper mechanism |
US4234897A (en) * | 1978-10-05 | 1980-11-18 | Ampex Corporation | DC Free encoding for data transmission |
US4326792A (en) * | 1979-12-28 | 1982-04-27 | Savin Corporation | Combined registration image transfer and pickoff assembly for electrophotographic copier |
US4503772A (en) * | 1981-04-21 | 1985-03-12 | Komori Printing Machine Co., Ltd. | Gripper pad height adjusting device for sheet-fed rotary printing presses |
DE3445886A1 (de) * | 1984-12-15 | 1986-06-26 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Greifervorrichtung fuer eine druckmaschine |
IT1183507B (it) * | 1985-03-28 | 1987-10-22 | Arnoldo Mandadori Editore Offi | Dispositivo di messa a registro delle lastre da stampa sui cilindri di macchine da stampa offset piane |
US4900008A (en) * | 1986-12-22 | 1990-02-13 | Polaroid Corporation | Sheet clamping arrangement for rotatable drums |
JPS6483563A (en) * | 1987-09-28 | 1989-03-29 | Toshiba Corp | Handling of oxide superconducting material |
JP2535477Y2 (ja) * | 1987-11-25 | 1997-05-14 | 株式会社リコー | 感熱記録装置 |
JPH02553A (ja) * | 1987-12-28 | 1990-01-05 | Ricoh Co Ltd | 熱転写カラープリンタ |
EP0350195A3 (en) * | 1988-07-04 | 1991-04-03 | Toyo Ink Manufacturing Co., Ltd. | Apparatus for image formation and method of image formation |
DE3936459C1 (ja) * | 1989-11-02 | 1991-04-18 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | |
US5199352A (en) * | 1990-02-24 | 1993-04-06 | Komori Corporation | Plate lock-up device for printing press |
US5253583A (en) * | 1991-03-04 | 1993-10-19 | Fuji Kikai Kogyo Kabushiki Kaisha | Device for positioning printing material for use in a printing apparatus |
US5245358A (en) * | 1991-06-17 | 1993-09-14 | Tektronix, Inc. | Substrate support for use in a thermal phase change ink printing apparatus |
-
1993
- 1993-04-13 US US08/157,202 patent/US5533451A/en not_active Expired - Fee Related
- 1993-04-13 DE DE69305475T patent/DE69305475T2/de not_active Expired - Fee Related
- 1993-04-13 CA CA002111201A patent/CA2111201A1/en not_active Abandoned
- 1993-04-13 AU AU39047/93A patent/AU664616B2/en not_active Ceased
- 1993-04-13 EP EP93908089A patent/EP0593780B1/en not_active Expired - Lifetime
- 1993-04-13 WO PCT/JP1993/000477 patent/WO1993021017A1/ja active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55159658U (ja) * | 1979-05-04 | 1980-11-17 | ||
JPS63249676A (ja) * | 1987-04-03 | 1988-10-17 | Toshiba Corp | 画像形成装置 |
JPH0183563U (ja) * | 1987-11-20 | 1989-06-02 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0593780A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0593780A4 (ja) | 1994-08-03 |
AU664616B2 (en) | 1995-11-23 |
AU3904793A (en) | 1993-11-18 |
US5533451A (en) | 1996-07-09 |
DE69305475D1 (de) | 1996-11-21 |
EP0593780A1 (en) | 1994-04-27 |
DE69305475T2 (de) | 1997-02-20 |
CA2111201A1 (en) | 1993-10-28 |
EP0593780B1 (en) | 1996-10-16 |
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