EP0635799A2 - Unité d'impression à rayon laser - Google Patents

Unité d'impression à rayon laser Download PDF

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Publication number
EP0635799A2
EP0635799A2 EP93111554A EP93111554A EP0635799A2 EP 0635799 A2 EP0635799 A2 EP 0635799A2 EP 93111554 A EP93111554 A EP 93111554A EP 93111554 A EP93111554 A EP 93111554A EP 0635799 A2 EP0635799 A2 EP 0635799A2
Authority
EP
European Patent Office
Prior art keywords
mask
laser beam
printing device
masks
beam printing
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Withdrawn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
EP93111554A
Other languages
German (de)
English (en)
Other versions
EP0635799A3 (fr
Inventor
Peter Schmitt
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.)
Metronic Geratebau GmbH and Co
Original Assignee
Metronic Geratebau GmbH and Co
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
Priority to DE4223408A priority Critical patent/DE4223408C2/de
Application filed by Metronic Geratebau GmbH and Co filed Critical Metronic Geratebau GmbH and Co
Priority to EP93111554A priority patent/EP0635799A3/fr
Publication of EP0635799A2 publication Critical patent/EP0635799A2/fr
Publication of EP0635799A3 publication Critical patent/EP0635799A3/fr
Withdrawn legal-status Critical Current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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/465—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using masks, e.g. light-switching masks
    • B41J2/4655—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using masks, e.g. light-switching masks using character templates

Definitions

  • the invention relates to a mask holding and mask feeding device for a laser beam printing device according to the preamble of claim 1.
  • Laser beam printing devices for labeling (printing) objects are e.g. made known by DE 40 18 025 A1.
  • a pulsed laser beam passes through openings in a transmission mask and strikes a material to be printed, e.g. a packaging container or paper web etc. and creates a pattern on them by removing material or changing color.
  • a disadvantage of the laser beam printing devices mentioned is that the replacement of the transmission masks is time-consuming. Each mask must be aligned exactly. Such laser printer devices are therefore difficult to use for productions in which the motif can be changed quickly and frequently.
  • the masks are exchanged on the side. This makes it practically impossible to arrange several interchangeable masks directly next to one another. If several masks should now be arranged one after the other to e.g. To change motifs in the form of numbers or letters continuously, e.g. with consecutive numbering or alphanumeric identification - this was previously only possible with reasonable technical and time expenditure rotating, concentric disc-shaped mask carriers.
  • the invention has for its object a device for holding masks e.g. To create transmission masks, with which it is possible to stock a plurality of the masks just mentioned and optionally bring them into the beam path of a laser beam in a short time and to position the masks exactly in one working position.
  • a plurality of masks can be stored in a simple manner in a storage device and each can be brought into a beam path of a laser.
  • Several "print lines" of mask storage devices can be arranged side by side in a very small space. It is also advantageous that the masks cannot be exchanged in the axial but in the tangential direction. This advantageously enables a plurality of mask storage devices - and thus masks - to be arranged close to one another and each storage device to be switched continuously or optionally in the manner of a counter.
  • the overall device can be kept small and thus space-saving. Since the masks can be exchanged tangentially, that is to say from the front, the adjacent mask memory devices do not have to be moved away from the one to be manipulated.
  • a positioning drive 1 for example a frequency-controlled stepper motor, is attached to a side frame of a laser printing device, not shown. In a known manner, this stepper motor 1 can move precisely to any desired rotational angle position at the desired speed.
  • a drum 4 On an output shaft 3 of the stepping motor 1, a drum 4 is rotatably supported, for example overhung, via its bearing bushes 6.
  • a plurality, for example twelve, holders 9a for one mask 9b each, for example a transmission mask for a laser beam 18, are foldably mounted at an angle> 180.
  • hinges or a spring steel version of the entire holder 9a or a part of the holder are provided.
  • a compression spring 12 for example a curved leaf spring, presses on each holder 9a. Their application of force lies on a frame of the holder 9a, its abutment on the lateral surface of the drum 4.
  • the compression springs 12, as can be seen in FIG 9a lies.
  • the positioning drive 1 a stepper motor, is arranged.
  • a horizontally extending, rectangular first stop 14 is attached to the side frame.
  • the stop 14 is attached so that it dips into an enveloping circle 10 of the holder 9a aligned with the extension of the radius of the drum 4. It is thereby achieved that a mask 17 following the mask 16 in a working position is folded over almost horizontally in a waiting position and for the time being cannot get into a beam path 19 of the laser beam 18 "shaped" by the mask 16 in the working position.
  • the holder 9a with the mask 9b is erected within this cycle time by means of the force of the compression spring 12 so that it is just before reaching the "highest point 13" just comes to lie on an extension of the radius of the drum 4 and strikes a second cuboid stop 21 fixed to the side frame.
  • the second stop 21 also plunges into the enveloping circle 10 and is oriented such that when the holder 9a is struck against the left side surface of the stop 21, the mask 9b has exactly reached its working position 16.
  • the laser is now switched on and the laser beam 18 "shaped" by the transmission mask 16 now strikes a print carrier 22, e.g. a paper web, and "prints" the motif of mask 16 on it.
  • FIG. 2 shows a further embodiment of the mask storage and supply device according to the invention.
  • a one-part or multi-part slide 24 is arranged so that it can be pushed back and forth in two frame-fixed, U-shaped guides 23.
  • the carriage 24 has a plurality of cutouts 26, each with an all-round stop 27 at the rear.
  • a mask 9b is placed adjacent to the stop 27 and by means of e.g. two rotary fasteners 28 held in the cutout.
  • a plurality of transport holes 29 are provided at regular intervals from one another, which are in engagement with teeth of a flying pinion 31 of a stepping motor 1.
  • a flying pinion 31 of a stepping motor 1 By rotating the pinion 31 via the stepper motor 1, each mask 9b can be brought into the beam path of the laser by the optional displacement of the slide 24.

Landscapes

  • Laser Beam Printer (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
EP93111554A 1992-07-16 1993-07-19 Unité d'impression à rayon laser. Withdrawn EP0635799A3 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4223408A DE4223408C2 (de) 1992-07-16 1992-07-16 Laserstrahldruckeinrichtung
EP93111554A EP0635799A3 (fr) 1992-07-16 1993-07-19 Unité d'impression à rayon laser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4223408A DE4223408C2 (de) 1992-07-16 1992-07-16 Laserstrahldruckeinrichtung
EP93111554A EP0635799A3 (fr) 1992-07-16 1993-07-19 Unité d'impression à rayon laser.

Publications (2)

Publication Number Publication Date
EP0635799A2 true EP0635799A2 (fr) 1995-01-25
EP0635799A3 EP0635799A3 (fr) 1995-11-08

Family

ID=25916644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111554A Withdrawn EP0635799A3 (fr) 1992-07-16 1993-07-19 Unité d'impression à rayon laser.

Country Status (2)

Country Link
EP (1) EP0635799A3 (fr)
DE (1) DE4223408C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310504A (en) * 1996-02-23 1997-08-27 Spectrum Tech Ltd Laser marking apparatus and methods

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976787A (en) * 1958-12-03 1961-03-28 Mergenthaler Linotype Gmbh Font plate magazine for phototypographical machine
DE1217649B (de) * 1963-09-23 1966-05-26 Horst Germer Vorrichtung zur wahlweisen Einschaltung jeweils einer von mehreren Schablonen
JPS5642772Y2 (fr) * 1975-07-28 1981-10-06
DE2817419C3 (de) * 1978-04-18 1980-11-20 Krone Gmbh, 1000 Berlin Anzeigeeinrichtung mit beidseitig beschrifteten Klapptafeln
GB2067331A (en) * 1980-01-15 1981-07-22 Krone Gmbh Indicator device
DE3118938A1 (de) * 1981-05-13 1982-12-02 Datograf Apparatebau Gmbh & Co, 7100 Heilbronn Vorrichtung zur markierung von oberflaechen durch laserstrahlung
JPS5929178A (ja) * 1982-08-11 1984-02-16 Pola Chem Ind Inc レザ−光線を利用した印字装置
JPS5944035A (ja) * 1982-09-06 1984-03-12 Fuji Photo Film Co Ltd マルチフオ−ムスライド選択装置
JPS63260445A (ja) * 1987-04-17 1988-10-27 Shibuya Kogyo Co Ltd レ−ザ印字装置のマスク交換装置
US4803336A (en) * 1988-01-14 1989-02-07 Hughes Aircraft Company High speed laser marking system
JPH01245985A (ja) * 1988-03-26 1989-10-02 Oimatsu Sangyo:Kk レーザ光線による彫刻方法及びワーク移動装置
DE4018025A1 (de) * 1990-06-05 1991-12-12 Computer Systeme Und Automatio Endlos-laser-etikettendrucker
FR2692704B1 (fr) * 1992-06-22 1998-01-16 Alcatel Radiotelephone Lecteur de carte a puce.
JPH064064A (ja) * 1992-06-24 1994-01-14 Canon Inc パターン発生方式

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310504A (en) * 1996-02-23 1997-08-27 Spectrum Tech Ltd Laser marking apparatus and methods

Also Published As

Publication number Publication date
EP0635799A3 (fr) 1995-11-08
DE4223408A1 (de) 1994-01-20
DE4223408C2 (de) 1995-11-23

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