DE2008429A1 - Device for copying printing plates - Google Patents

Description

WERNER STECH

Patent attorney

61 Darmstadt, 19 «2.1970 ■ Goethestraße 4 _

Telephone (0615I) MB 2 02 29 Patent attorney Dipl.-Ing. V. Stedi, 61 Darmstadt, Gotthenr. 4th

P ate η ta n / m e 1 du η g

the company Wilhelm Staub G.m.b.H., 6078 Neu-Isenburg,

Hermannstrasse 15 ■

concerning

"Device for copying printing plates ¹¹

Devices for copying printing plates are known (DBGM 1 978 664, DBGM 1 979 470 and DBGM 1 979 471).

Furthermore, a double copying frame is obviously previously used, which has a device on both sides for bending in copy material and which is mounted pivotably about a longitudinal axis. Sin eolohtr Dopptlkopierrahnen makes it possible to dad τοη below dl · Beliohtung the

109839/0664

already inserted printing plate takes place, while at the same time a new printing plate is inserted from above will. At the end of the copying time, the frame is swiveled and the exposure of the new printing plate "begins, and this exposure time is used to remove the already exposed printing plate and again insert a new printing plate. As a result, the work teapo that can be achieved with the help of such a device is considerably accelerated.

The disadvantage of the known device is that a relatively large one for pivoting the pressure plate Space is required under the pressure plate. This requires a correspondingly large distance between the printing plate and the light source, which reduces the light output deteriorates and the exposure becomes uneven.

In accordance with the invention, this obviates this disadvantage avoided the double copy frame in the upper section a closed substructure is mounted and that the substructure is vertically movable in a horizontal plane a Leuohtröhrenfeld, possibly with upstream] Directional grating, is arranged. When pivoting the copier frame, it is thereby possible to move the fluorescent tube field downwards beforehand, so that the pivoting copier frame does not penetrate the plane of the fluorescent tube field. After the end of the swing, the Leuohtröhrenfeld is moved upwards again. The fluorescent tube field can be mechanically or electrically coupled to the double copying frame in this way be that when swiveling the frame the Leuohtröhrenfeld is moved downwards in such a way that, when the frame is in the vertical position, it assumes its lowest position and returns to the normal operating state for the items to be copied, when the 4 Doyyel copy frame is back in a · horizontal

1 09139/0664

Position is swiveled in. Such mechanical or electrical interlocks are known from other technical fields. With the device according to the invention, they make it possible for the pivoting to take place only when the fluorescent tube field is correspondingly lowered and the lifting of the fluorescent tube field only takes place when the frame has again assumed a basic position. The arrangement can also be such that when the exposure is switched on, the fluorescent tube field moves into the copying position and returns to the lower position after the exposure time has elapsed. Through both a purchase orders that the fluorescent tube array is destroyed accidentally by the Riiimens when pivoting is avoided.

The device according to the invention can also be operated with an additional point light lamp which is arranged at the top will. It is possible in this way that for cases in which the template does not allow working with the fluorescent tube field, with the point light lamp in a conventional manner Way or also in the combination directed Light of the fluorescent tube arrangement and point light lamp is worked.

An embodiment of the invention is shown in Drawings shown and will be described in more detail below.

Show it:

Pig.l a copier according to the invention seen from the side;

2 shows a copier according to the invention

seen from the front;

. - 4 -109839/0664

Pig.3 on a larger scale corner B of the Pig. 2,

Pig.4 to a larger extent the corner A of the Pig.l.

As Piguren 1 and 2 show, there is 1 in the housing pivotably arranged the double copying frame 2. Below the double copying frame 2 is a fluorescent tube field 3, which is on both sides by means of rollers 5 on rails can slide up and down. The device for and sliding down the fluorescent tube field 3 ■ by means of the «electric motor * 16 and the downstream Gear 17 driven, which in turn has a shaft 15 drives, which acts on the wheels 6, 7, 8, 9, 10 connected to one another via chains 11, in such a way that the The fluorescent tube field 3 can be sucked down into a position which enables the double copying frame 2 to be tilted.

On the side of the housing box is a stand 12 attached, on which, as shown, a point light device 13 with the point light source 14 hangs.

Pigur 3 shows in a partial view on an enlarged scale details of the double copy frame. On the fixed part 28 of the housing 1 is on the section 27die Shaft 26 with the mandrel 29 is arranged. On the shaft 26, the double copy frame 2 is mounted in bearings 31, and although via brackets 30 on which the plastic sheets 21 are attached. To this The copy is placed on documents. Above that comes a glass plate 40, which seals well by means of the seal 22 is. The cover plate 20 is placed on the glass plate 40.

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As Figure 3 shows, all auletat are described ! Double parts, namely above and below, available. Pressure plates 23 »which under the action of the coil springs 24 etehen, press the plastic plate 21 feat an da Paper goods and the glass plate. You feathers must be calibrated on the common footbridge 25.

fig. 4 shows the lowerable fluorescent tube field. The housing 3 is the leuohtröhrenfeldes stored by means of bearing blocks $ 3 on RMdtrn 5, which, as already described, up on the rails 4 and can slide down · ♦ * In de "housing 3 are the leuohtrührenfeldes dlt leuohtröhren 37 arranged. In front of the Leuohtöhren 37 1 · Ί tla light grid 36 attached.

109139/0014

Claims (1)

Claims Yorrichtung sub copying τοη printing plates ait a · Doppelkopierrahaen, which has on both sides a device sub linlegen τοη copy goods and the is pivotably mounted over a longitudinal axis, characterized in that the Doppelkopierrahaen (2) la upper section a "closed substructure (1) is mounted and that a * i * substructure (1) in a horizontal bee rertikai movably a leuehtruhrenfel" (3) "possibly old gate-held a light grid (3t), aj" eer4aet is. 2 Performing according to claim 1, characterized by the fact that the fluorescent tube field (3) looks like this, electrically old with double copier frames (3) it is pounded that there is a swing of the lame the IieutatrVhrenfeld (3) is moved down, in such a way that it is in the vertical position of the lahaems ft) MlM deepest «lay ·« inaiaat and many in the neiejalea Ietriebesmstand sua Keplergut keaat, if the Beppelkeplerranaen (3) back into a horizontal one lag swiveled in is * } · Terriehtung naeli Anaprtelien 1 to i, daduroh fekemn «eiehjiet _f dai the leueHtrllhrenfeld (3) so aeekaniseh ader elektriseh alt tea» opfelkepier- (I) keppelt let »dai bein lineo cold the the Leuehtrlarenfeld (3) in lopierposition May after the end of the course of the training course in the subdivision. _m BATH 101031/0014 _ 7 - 4. Apparatus according to claim 1, characterized in that above the double copy frame a additional Punktliohtlaepe (13, 14) arranged is. 109839/0864