EP1291189A1 - Colour proofer with registering means - Google Patents

Colour proofer with registering means Download PDF

Info

Publication number
EP1291189A1
EP1291189A1 EP01000424A EP01000424A EP1291189A1 EP 1291189 A1 EP1291189 A1 EP 1291189A1 EP 01000424 A EP01000424 A EP 01000424A EP 01000424 A EP01000424 A EP 01000424A EP 1291189 A1 EP1291189 A1 EP 1291189A1
Authority
EP
European Patent Office
Prior art keywords
unit
receiving
medium
printing
alignment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01000424A
Other languages
German (de)
English (en)
French (fr)
Inventor
Stefaan Deman
Marc Chys
Serge Defever
Christophe Michiels
Jozef Feys
Patrick Staelens
Rudy Sampson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mutoh Europe NV
Agfa NV
Original Assignee
Agfa Gevaert NV
Mutoh Europe NV
Agfa Gevaert AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert NV, Mutoh Europe NV, Agfa Gevaert AG filed Critical Agfa Gevaert NV
Priority to EP01000424A priority Critical patent/EP1291189A1/en
Priority to JP2002247034A priority patent/JP4121334B2/ja
Priority to US10/234,685 priority patent/US6729780B2/en
Publication of EP1291189A1 publication Critical patent/EP1291189A1/en
Withdrawn legal-status Critical Current

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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
    • B41J13/0009—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
    • 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
    • B41J13/0054—Handling sheets of differing lengths
    • 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
    • B41J13/26—Registering devices
    • B41J13/32—Means for positioning sheets in two directions under one control, e.g. for format control or orthogonal sheet positioning
    • 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
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/60—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material

Definitions

  • the present invention relates to an printing apparatus capable of handling large size sheets. More specifically the invention is related to a colour proofing apparatus having a dual-side mode.
  • Printed products contain not only printed text but many photographic illustrations are included in all sorts of printed products such as leaflets, magazines etc...
  • a continuous tone image is an image containing multiple grey (colour)levels with no perceptible quantization to them.
  • Digital halftoning refers to the process whereby a digital (continuous tone) image is rendered with a computer-controlled graphics output device that is capable of generating only a limited number of grey (colour) levels.
  • the input image is electronically screened to obtain a halftone image for each colour.
  • the printed result is simulated using a colour proofing apparatus.
  • a modern colour proofing apparatus is capable of not only providing a simulated print of the photographs but of the whole printed product.
  • Several large size colour proofers use an inkjet printing process to render the halftone images on a large sheet of paper or other receiving media. Sheet sizes used may vary but a used format may be typical 109.22mm (43 inch) x 76.2 mm (30 inch).
  • the medium is usually of a paper type, typically 100-130 g/mm 2 , but also other media type can be used e.g. polyester supports which can be coated with appropriate ink receiving coatings etc...
  • a new problem emerging is the lack of registering of the front- and backside images on the proofing product giving unsatisfactory results.
  • some colour proofers one can manually turn the receiving sheet and feed it again into the printer by hand using e.g. a registration edge as an aid.
  • the medium is turned over automatically. Hitherto it has been a problem providing a good registering of the output image on the large size output media in use.
  • Especially registering correctly the images on the front and back side of large output media used in the colour and imposition proofing apparatus has been a problem.
  • the curl remaining in the paper further causes problems in feeding the paper correctly.
  • Fig 1 gives an overall view of the printing apparatus according to the invention.
  • the apparatus is composed of two main parts :
  • the roll media feeding device 2 comprises :
  • the leading part of the receiver medium 10 When operating from a new medium roll 7 the leading part of the receiver medium 10 has to loaded by hand into the print unit 1 where it is caught by lowering the lowered printer pinch rollers 12 which will ensure further transport. During printing the receiver medium 10 is advanced. Due to the torque caused by the friction brake mechanism 7 acting upon the medium roll 7 a tension is created in the receiving material 10 and curl which remained in the material due to the storage in rolled up state is substantially removed by guiding the material in a relative sharp bend around the decurling roller 9.
  • the loading of the leading edge of the receiving web 10 can be ensured by an automatic system, but usually the loading by hand is the most cost-effective method.
  • the receiving medium 10 is also guided over a suction plate 14 further holding down the receiving medium 10 at the position of the print head 16 avoiding problems which can be caused by residual curl in the receiving medium 10 after decurling.
  • suction holes 15 are provided while one or more ventilators provide a vacuum in a compartment under the suction plate 14.
  • the receiving medium 10 guided over the suction plate 14 is held to the suction plate 14 by the suction acting upon the receiving medium 10 through the suction holes 5 in the plate. This ensure a constant distance from the print head 16 to the receiver 10.
  • the receiver 10 is moved forward by the printer drive rollers 11.
  • the leading edge and the size of the receiving material 10 is detected using a sensor 17.
  • a sensor 17 Preferably this is done by one or more optical sensors using measurement of reflection or transmission.
  • a single reflection sensor 17, mounted on the shuttle 18 holding the print head 16 is used for detecting the edges of the receiving web 10, but separate systems using one or multiple sensors can be employed. Out of these measurements the size of the receiving medium 10 can be detected and even misalignment can be indicated to the operator.
  • the front-side image is printed by the print head 16.
  • this is done by a colour inkjet print head 16 mounted on a shuttle 18.
  • the print head 16 shuttles across the receiving medium 10 the image of the front side is recorded on the receiver 10.
  • the medium 10 is moved forward by the printer drive rollers 11 in a controlled manner.
  • Image data is supplied to the print unit 1 from an image source in a synchronised manner.
  • a image containing several pages of a publications are printed on the front side of the receiving medium 10.
  • the leading end of the receiving web 10 gradually enters the tumbler unit 3 located on the front side of the print unit 1.
  • the rotatable platform 24 mainly carries :
  • a corresponding pinch roller 20 is provided in conjunction with each drive roller 20 .
  • the pinch rollers 20 can be lowered or raised in order to close or open the nip 30 between the drive and pinch rollers 19, 20.
  • the mechanism 29 to raise and lower the pinch rollers 19 can be driven by an electrical motor but various other systems can be used. E.g. cam mechanisms, air pressure, etc..
  • the lowering mechanism 29 is driven by using cams 31 coupled to the tumbler chassis 23.
  • a pinch roller locking mechanism is provided in order to lock the pinch rollers 20 in a closed state. This locking can be done in various ways. A simple and cheap method is making use of a mechanical locking mechanism.
  • the rotation axis of this rotatable platform 24 preferably coincides with the axis of the drive rollers 20 and the driver disc 22. Thereby only the position of the rotatable platform 24 changes during its rotation while the distance of the rotatable platform to the driver rollers 20 is constant. This ensures that the forward pinch rollers 19 remain in contact or at a constant distance with the corresponding drive rollers 20 during rotation of the rotatable platform 24. Herewith only the orientation of the nip 30 will change during rotation of the rotatable platform 24.
  • a second locking mechanism, the driver disc locking mechanism 32 which is also preferably a locking pin 33 which can be extended electromagnetically, provided on the rotatable platform 24 enables the rotatable platform 24 to be coupled to the driver disc 22. Instead of mounting the various locking mechanisms 25, 32 onto the rotatable platform 24, it is possible to provide locking mechanisms on the tumbler chassis 23 and/or driver disc 22 to ensure locking of the rotatable platform 24 at the various locations A, B, C and the driver disc 22.
  • the nip 30 between the front drive rollers 20 and corresponding front pinch rollers 19 is initially opened in order to freely let the leading end of the receiving medium 10 pass through the tumbler unit 3. This ensures that the transport speed of the print unit 1 is not influenced and the printed image is undisturbed.
  • the receiving web 10 is fed to the required position to enable it to be cut of at the correct place.
  • the printer driver rollers 11 stop and hold the receiver web 10.
  • a cutting mechanism now cuts the receiving web 10 at the appropriate location separating the printed image from the non-printed part of the receiving web 10 thus creating a receiver sheet carrying a printed image on the front-side.
  • Several possible cutting mechanisms can be used. Preferable the cutting can be done using a knife blade mechanism mounted on the shuttle 17 of the print head 16 which can be actuated when necessary. After the cutting the front pinch/drive rollers 19, 20 now have control over the receiver sheet.
  • the rear pinch roller 13 contacts the web. This can be done by a lowering mechanism, but as indicated in Fig. 6 an embodiment is possible wherein a partial roller contacts the web 10 simply by rotation of the partial pinch roller 13.
  • the dimensions of the rear pinch roller 13 may be so that it spans the whole width of the printer or it may be divided into two or more pinch rollers 13 dispersed over the printer width.
  • the web 10 has to be contacted at at least two points relatively far apart to ensure that the web 10 is prevented from rotating to a slant position.
  • the printer pinch rollers 12 are lifted so that the control of the web 10 is given to the rear pinch roller 13 which prevents the medium 10 from dropping out of the print unit 1.
  • the receiving sheet 10 cut from the web, carrying the front side image, is fed forward into and trough the tumbler unit 3 by rotation of the front-drive rollers 19, coupled to the drive disc 22, until the rear end of the receiving sheet 10 has cleared the printer unit 1 resulting in the situation of Fig. 8.
  • the front end drive rollers 20 are stopped and tumbling action is started.
  • the rotatable platform 24 is fixed by the position locking pin 26 in the initial position A as shown in Fig. 8.
  • the only action taken by the tumbler unit 3 was the closing of the nip 30 for taking hold of the receiving sheet 10.
  • the tumbling action is started.
  • the driver disc 22 it is positioned so that a hole 35 in the side of the driver disc 22 exactly is in line with the driver disc locking mechanism 32 of the rotatable platform 24.
  • the driver disc locking pin 33 of the driver disc locking mechanism 32 is electromagnetically extended into the hole 35 in the driver disc 22.
  • the pin 26 of the position locking mechanism 25 is retracted so that the rotatable platform 24 is now only coupled to the driver disc 22.
  • the forward drive rollers 20 now perform a feed-trough operation, lowering the last printed end of receiving sheet 10 carrying the printed image and raising the starting end of the printed image.
  • the feed-through operation is stopped by stopping the rotation of the drive rollers 20 and the coupled drive disc 22 as the beginning of the receiving sheet 10 enters the tumbler mechanism.
  • the receiving sheet 10 is now in position to allow rotation of the rotatable platform 24 to the re-feeding position indicated by C.
  • the drive disc 22 and coupled drive rollers 20 are halted so that a hole 35 in the drive disc 22 is aligned with the pin 33 of the drive disc locking mechanism 32 on the rotatable platform 24.
  • the rotatable platform 24 is now coupled to the driving disc 22 by extending the pin 33 of the driver disc locking mechanism 32.
  • the position locking mechanism 25 is disengaged from the chassis 23 and by slowly rotating the driver disc 22 and driver rollers 20 the rotatable platform 24 is rotated to position C where it is stopped and locked again by the position locking mechanism 25 after which the driver disc locking mechanism 32 is released.
  • the beginning of the receiving sheet 10 is now pointing to the print unit 1 with the printed image facing down as shown in Fig. 11
  • the receiving sheet 10 carrying the image is now re-fed to the print unit. This is indicated in Fig 11. This is done by rotation of the (two) front drive rollers 20 of the tumbler unit 3.
  • the build-up of the buckle grows gradually during re-feeding of the receiving sheet 10.
  • the developed buckle can however be removed easily by reversing the feeding direction of the drive rollers 20 for a short while.
  • the buckle builds up during a relative long re-feeding action and is removed by shortly reversing the transport direction of the front drive rollers 20.
  • the rollers are merely halted without reversing the transport direction of the sheet.
  • This transport in a stepwise manner is repeated until the receiving sheet 10 can be re-fed to the print unit 1 without further buckling. This will mostly be possible when the receiving sheet 10 is partially re-fed to the print unit 1 and the weight of the receiving sheet 10 hanging down from the tumbler unit 3 is relatively low.
  • the receiving sheet 10 is re-fed into the print unit 1 with the front end into the entrance slit 36 of the re-feeding storage chamber 34 till it is in position illustrated in position of Fig. 12, ready for the following step.
  • the receiving sheet 10 is re-fed into the print unit 1 until it can be sensed by alignment sensors 37 and 38 indicated in fig. 12. These alignment sensors 37, 38 are able to determining the position of the edge of the receiving sheet 10 , and thus the position of the receiving sheet 10 which has been re-fed. By sensing the edge of the receiving sheet 10 at at least two locations the overall position of the receiving sheet 10 can be derived. To enhance the accuracy of the determination by the alignment sensors 37, 38 these two locations preferably are located near the beginning and starting end of the receiver sheet 10.
  • Another method is detection of the edge by one sensor which is used at two different positions or alternatively by detecting the edge of the receiving sheet 10 by using a single sensor at one location before and after the receiving sheet 10 is fed-trough for a predetermined distance.
  • This measuring can e.g. be done by the measuring sensor 17 mounted on the shuttle 18 carrying the print head 16.
  • Another possibility is the measuring by one sensor which itself is moved to measure the edge position at at least two different locations. Even a sensor directly sensing the orientation of the sheet can be conceived.
  • the sensing is preferably done by a non-contact sensor, e.g. an optical sensor which is able to detect the edge of the receiving sheet by detection or transmission or reflection.
  • Parameters which e.g. can be derived by a processing circuit are :
  • This orientation and position can be corrected alignment correction system. This is done by driving the forward drive rollers 20 of the tumbler unit 3 with different speed or direction. Due to the fact that the drive rollers 20 have separate driving mechanisms 21, it is not difficult to perform a differential driving of the driving rollers 20.
  • the principle is illustrated in Fig. 13. As one side of the receiving sheet 10 is driven by a drive roller 20 with a certain speed and the other side is held still or is driven by another drive roller 20 with an appropriate different speed and/or direction. Thus the receiving sheet 10 is forced to make a rotational movement which can bring the receiving sheet 10 in a desired orientation.
  • each forward driving rollers 20 is determined by the processing unit based upon derived parameters and desired position. After each position adjustment, the position of the receiving sheet 10 can be redetected and evaluated by the alignment sensors. As it can be understood, preferably the drive and pinch rollers 19, 20 of the tumbler unit are used. But it is also possible to provide separate drive and pinch rollers to align the receiving medium 10. These separate alignment system can be located in different sections of the apparatus.
  • Another way to adapt to the detected displacement of the receiving sheet 10 is by printing the image on the back side at an adjusted location. This can be done in an electronic way by adjusting the data to be printed so that they are printed at another location. Also a mechanical adjustment of the shuttle 17 of the print head 16 or of the print head 16 within the shuttle 17 are possible solutions for adjusting to a displacement of the receiving sheet 10.
  • the print pinch rollers 12 are lowered in order to take control over the receiving sheet 10 during printing of the back-side.
  • the nip 30 in the tumbler unit 3 is opened by unlocking lifting the front pinch rollers 19 by use of the cam 31 at position C acting upon the pinch roller locking and lowering mechanism 29.
  • the printer drive and pinch rollers 11, 12 feed the receiving sheet 10 backwards into the re-feeding storage chamber 34 until the edge of the receiving sheet clears the forward drive and pinch rollers 19, 20 as shown in Fig 14.
  • the drive disc 22 and drive rollers 20 are stopped at an appropriate location in order to allow the drive disc locking mechanism 32 to lock the disc drive locking pin 33 into the drive disc 22.
  • the position locking pin 26 of the position locking mechanism 25 is retracted from the tumbler chassis 23 or position block 28 and the rotatable platform 24 is repositioned at the initial position A where it is locked relatively to the chassis 23 by the position locking mechanism 25 and the driver disc 22 is released by the driver disc locking mechanism 32.
  • the tumbler unit 3 is now in the initial position A with the nip 30 between drive and pinch rollers 19, 20 opened in order to let the receiving sheet 10 pass during the printing of the back side.
  • the tumbler unit 3 remains in the same position till a next sheet is to be cut off.
  • the receiving sheet 10 is now stored in the storage chamber 34 with the front side image downwards while the start of the receiving sheet 10 is held between the printer drive and pinch rollers 11, 12.
  • a second printing step is now performed on the backside of the receiving sheet 10. This is illustrated in Fig. 15
  • the leading edge and the size of the receiving material 10 is detected, in the same way as before printing of the front side, after which the backside image is recorded.
  • the print head 16 shuttles across the receiving medium 10 the image of the back side is recorded on the receiver 10 while the printer transport and pinch rollers 11, 12 ensure correct feeding of the receiving sheet 10.
  • Image data is supplied to the print unit 1 from an image source in a synchronised manner and in relation to the orientation of the front side.
  • the print unit 1 While the print unit 1 prints the back-side, the leading end of the receiving sheet 10 gradually enters the tumbler unit 3 located on the front side of the printing apparatus. As the print is completed the receiving sheet 10 is released by the printer pinch rollers 12 and it is dropped in a receiving basket 6 mounted on the pedestal of the printer.
  • the receiving web 10 which was gripped and retracted by the rear pinch roller 13 can be reloaded into the printing unit 1.
  • the printer pinch rollers 12 are lifted.
  • the rear pinch roller 13 is rotated forward the end of the receiving web that was gripped by the rear pinch roller 13 will enter the nip between the printer drive rollers 11 and the printer pinch rollers 12.
  • the web is them gripped by the printer pinch rollers 12.
  • the receiving web is released by the rear pinch roller 13.
  • a separate lowering mechanism can be provided for the rear pinch roller 13.
  • the receiving web 10 is now in control of the printer drive rollers 11 and printer pinch rollers 12. The possibility of retracting and holding the receiving web 10 and afterwards reloading the web by a rear pinch roller in conjunction with the printer rollers 11, 12 enables an automatic continuous operation of the apparatus without operator intervention.
  • the front pinch rollers 19 mounted on the rotatable platform rotate around the front drive rollers 20 when the tumbler unit is rotated.
  • the front pinch rollers 19 and the receiving web 10 are situated under the front drive rollers 20 during feeding of the receiving web 10 to the tumbler unit 3.
  • the front pinch rollers 19 and receiving sheet 10 are situated above the front drive rollers 20.
  • Feed trough direction may vary in specific embodiments during tumbling action.
  • both rollers 19, 20 are located on a revolving platform 24 which has a rotation axis falling substantially on the centre-line of the nip 30.
  • the height of the receiving sheet 10 in relation to the printing engine 1 will stay the same.
  • the drive rollers 20 rotate around the front pinch rollers 19 during rotation of the rotatable platform 24.
  • front pinch rollers 19 are also driven or a lowering mechanism 29 can also be provided for the front drive rollers 20.
  • alignment procedure can be executed at nearly every stage of the printing cycle. I.e. alignment can be performed at any stage as long as the forward drive/pinch rollers 19, 20 take control over the receiving sheet or web 10 and edge sensing can be performed.
  • the paper sheet 10 can be cut off before any image is recorded on it.
  • the receiving sheet 10 could be store twice in the re-feeding storage chamber 34 while it is turned only once by the tumbling unit 3.

Landscapes

  • Registering Or Overturning Sheets (AREA)
  • Ink Jet (AREA)
EP01000424A 2001-09-05 2001-09-05 Colour proofer with registering means Withdrawn EP1291189A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01000424A EP1291189A1 (en) 2001-09-05 2001-09-05 Colour proofer with registering means
JP2002247034A JP4121334B2 (ja) 2001-09-05 2002-08-27 登録手段を有する色校正装置
US10/234,685 US6729780B2 (en) 2001-09-05 2002-09-04 Color proofer with registering means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01000424A EP1291189A1 (en) 2001-09-05 2001-09-05 Colour proofer with registering means

Publications (1)

Publication Number Publication Date
EP1291189A1 true EP1291189A1 (en) 2003-03-12

Family

ID=8176061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01000424A Withdrawn EP1291189A1 (en) 2001-09-05 2001-09-05 Colour proofer with registering means

Country Status (2)

Country Link
EP (1) EP1291189A1 (ja)
JP (1) JP4121334B2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7333766B2 (en) 2004-04-30 2008-02-19 Agfa Graphics Nv Colour proofer with curl control means

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962386A (en) * 1988-04-07 1990-10-09 Fuji Photo Film Co., Ltd. Color image recording system using multi-layer, heat-sensitive recording material
US5088848A (en) * 1990-03-20 1992-02-18 Ing. Olivetti & C., S.P.A. Printing sheet feed and aligning system for a printer
US5709484A (en) * 1995-04-24 1998-01-20 Kunz Gmbh Apparatus for double-sided printing of identification cards

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962386A (en) * 1988-04-07 1990-10-09 Fuji Photo Film Co., Ltd. Color image recording system using multi-layer, heat-sensitive recording material
US5088848A (en) * 1990-03-20 1992-02-18 Ing. Olivetti & C., S.P.A. Printing sheet feed and aligning system for a printer
US5709484A (en) * 1995-04-24 1998-01-20 Kunz Gmbh Apparatus for double-sided printing of identification cards

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"ACCURATE DOCUMENT ALIGNER", IBM TECHNICAL DISCLOSURE BULLETIN, IBM CORP. NEW YORK, US, vol. 39, no. 11, 1 November 1996 (1996-11-01), pages 111 - 112, XP000679839, ISSN: 0018-8689 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7333766B2 (en) 2004-04-30 2008-02-19 Agfa Graphics Nv Colour proofer with curl control means

Also Published As

Publication number Publication date
JP2003128304A (ja) 2003-05-08
JP4121334B2 (ja) 2008-07-23

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