DE7013894U - COPY DEVICE. - Google Patents

Description

K 1952 / Sbm 4381 PP-Dr.N.-ur April 6, 1970

Registration to register the

KALLE AKTIENGESELLSCHAFT Wiesbaden ~ Biebrich

for a patent on copier

The invention relates to a copying device with a rotating copying cylinder and at least a conveyor device for the original and the copy material surrounding part of its circumference a -> .. 'ie with a device for automatic feeding de3 copy material.

Copying devices of the type described here are known and z. B. in U.S. Patents 3,292 and 3,031,941. With them that presses too original to be copied after entering it in the

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Direction with its leading edge a switch that starts the feeding of copy material from a roll, and the trailing edge of the original operates the same or a different switch when it passes through, whereby the Kopierraaterialtraneport is interrupted and a cutting device is operated, ai ^ one of the L. , ength of the original corresponding Kopiermaterialblat ⁴ · cuts.

It has also already been proposed to use light barriers instead of mechanical ones for such controls Switches to use.

\ Ea is also from the German patent specification 925 751

: known, the throughput speed and thus the

: Exposure time by measuring the transparency of the

Originals to control. The control is carried out by

a light masked out of the copy light source

3 beam in the path of the original, which activates a photocell that controls the copying speed.

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After all, it is from the Swedish interpretation: '. 319 973 known to scan the width of the original by a number of switches in the path of the original and according to its width · to select the copy material from rolls of different widths.

All of these automatic copier devices have the disadvantage that their automation is essentially limited to one function and cannot be combined with the automation of further punctures without great effort. It will however, the development of copier machines is more important aimed at that require as little effort as possible. Of course, it is of particular advantage * if one has the highest possible level of automation the simplest possible means is achieved.

The invention is based on a copying device with a rotating copying cylinder and at least one a part of its circumference surrounding conveying device for the original Lind the copy material and with a Device for automatic feeding of the copy material.

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The device according to the invention is identified by three cooperating conveying devices, of which the first conveying device stores the original in Contact with the copy material transported along the copy cylinder and the second and third Conveyors are arranged so that they sequentially the original from its input into the device up to the merging with the copy material transport and that the path of the original at the transfer point between the second and the third conveying device intersects a light beam masked out of the copying light source and which opens at least one photoelectric cell falls.

The conveyors according to the invention are preferred endless conveyor belt systems, each of which consists of a single endless conveyor belt or a There is a number of parallel endless conveyor belts.

Pio FörderbanJsyateme are according to a particularly advantageous Embodiment permeable to air and contained Means for sucking the air out of that of each Conveyor belt system surrounding space.

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Dj.e transfer point between the second and third The conveyor is preferably located above the copying cylinder and expediently consists of one opaque guide plate for the original, which has a slot across the transport direction, through which the light beam masked out from the copy light source falls.

The device according to the invention allows different Functions by means of optical scanning of the original at one point in the device steer. When the leading edge of the original reaches the light beam, a control value is added to the Copy material length preserved. The second value required for this is provided by the passage of the rear edge. Both values are expediently stored or with a suitable delay on the transport and Cutting device Γ ν transfer the copy material, so that the copy material in a known manner of the length of the original according to the The roll is cut off and combined congruently with the original on the first conveyor belt system.

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Another control value is obtained by the fact that the original], its «, ν width correspondingly weakens the light beam falling on the photocell. In this case, the light beam is expediently designed as a slit that extends over the entire possible width of the original and falls on a photoelectric cell of a corresponding width or a number of photoelectric cells arranged next to one another. Depending on the width of the section of light falling on the photocell, which has been weakened by the original, a roll of copy material of the correct width is selected. After this selection has been made and the transport of the corresponding roll has been released, the above-mentioned delay for the transport of copy material can be canceled. 3 with simultaneous electronic transmission of the ^^ for values for copy material transport and Rc ^ - r *. \ 1, sr '- "* v * n'.tet can also be used without delay.

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Ultimately it is weakened by the degree of weakness obtained from the original a control value for the exposure time of the copy material, which is expedient in is regulated in a known manner by the feed speed of the conveyor belts.

The measured values obtained by scanning the side edges of the original can advantageously control not only the choice of roll of the copy material, but also the side shift of the copy material, so that the copy material is brought together with the original in such a way that it is the same width across the original on both sides survives or vice versa in the case of uncut originals. The shifting of the copy material is expediently carried out after the cutting of the ¹ sheet from the supply roll and before it is loaded onto the first conveyor device or onto the first conveyor belt system. on a carriage that is arranged between these stations and can be moved sideways. This automatic page alignment of the copy material according to the original has the advantage that the original is no longer at a certain point on the input table, e.g. B.

791-38-S4

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ttri an Äaouhitifclcia te j must be introduced. Through this Entering the original is made much easier and simpler.

The device according to the invention can also with advantage be designed as a repeat copier. In this case the second and third are conveyors or the second and third conveyor belts arranged so that one of the original from the transfer point, at which it takes over from the other, bie transported to a point of contact with the first conveyor device located in front of the copying station and the other, the original at a point of contact with the first conveyor downstream of the copier station separated from the copy material and transported back from there to the transfer point.

In such a repeat copier, the position of its side edges can be used with each revolution of the original checked in the manner indicated above and the location of the copy material for each individual copy

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Getting corrected. This possibility of correction is particularly advantageous as it is common in practice it happens that the original shifts slightly to the side when the copy is repeated several times and then no longer exactly on the copied material to be taken comes to rest.

The inventive arrangement of the conveyors for the original enables all of the above Control measure by means of a single au3 copy light source masked light beam to carry out by suitable photoelectric registration devices. The device is therefore constructed very simply in relation to its performance and to its degree of automation.

A particular advantage is also achieved by the described form of execution as a repeat copier. By returning the 3 originals via the two additional conveyor belt systems, the circulation path of the Originals are considerably extended compared to the known devices, in which the return through the

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Copy cylinder itself takes place. Of course, this is the length of the original to be repeated through the Limited cylinder circumference. The device according to the invention therefore also allows repeated automatic Copying very long originals such as i m or more. Because the length of the too copying original is therefore independent of the cylinder circumference, a smaller copying cylinder can be used be used.

The copying cylinders of the usual blueprint machines are cooled from the inside by an air stream. In order to the cooling air does not affect the performance of the light source, which is usually a gas discharge lamp, the lamp is in an additional cladding tube, which is generally also is made of quartz. You can do without the cladding tube if the copying cylinder is not is cooled from the inside, but from the outside, as is preferably the case with the device according to the invention he follows. External cooling has the advantage

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that the inside of the cylinder does not go through from d, he Cooling air entrained dust particles are contaminated. By eliminating the cladding tube, the illuminance on the copy material is increased. Another considerable The illuminance is increased by reducing the size of the copying cylinder. The copy cylinder Conventional licntpausmaachinen have a diameter of about 15 to over 20 cn. The device according to the invention allows the use of copier cylinders with a diameter of less than 10 cm.

If smaller pre-lasers need to be repeated, the length of which only makes up part of the circulation on the endless conveyor belt systems, an increased throughput speed can be switched on to shorten the circulation time, which takes effect when the end of the original has left the copier cylinder and until the front edge of it reached for renewed exposure. The switching of the speed can advantageously be controlled photoelectrically.

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The device according to the invention can advantageously be combined with the _{device described and claimed in the simultaneously submitted e P ^ 111} , (K 19go), in which the exposure station can optionally be loaded from two sides by reversing the direction of travel of the conveyor belt. This design allows copier material of different sizes to be stored on each feed side.

A significant simplification of the operation of the invention Device allows an embodiment in which the copying process by prepunched on = cards is controlled automatically. On the order card know z. B. the number of copies, if applicable the type of copy material and other information should be noted. With a suitable registration device the material costs for the execution of a copy job can be recorded automatically.

The copy material can preferably be used immediately after exposure; through an affiliated development

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device are guided. In the case of blueprint machines, heated, moist ammonia gas is usually used here left to act on the material or applied a thin layer of a developer liquid. the If necessary, the pause is dried or degassed and ejected into a collecting pan.

If the repeat copy device according to the invention contains a development part, this is preferably attached below the Belicbtungteils. at With this arrangement, the exposure device can advantageously be constructed so that the The device part lying above the exposure cylinder can be swiveled upwards, so that the exposure cylinder is easily accessible in the event of malfunctions or for cleaning. With the combined blueprint devices that have been used up to now, the ano :, ning of exposure and developing part reversed so that the blueprint cylinder is difficult to access.

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A preferred embodiment of the copier device according to the invention I3t is shown in the drawing, which shows an automatically working blueprint device with an exposure and development part. The original 10 to be copied lies on the operating table 11 and is pushed into the insertion slot of the exposure part by hand. Then it is grasped by the conveyor belt 13 and pushed over the guide plate 16, behind which it is taken over by the conveyor belt 1 * 1. In the opaque guide plate 16 there is a gap 17 * through which a light beam 18 which is masked out over its entire length by the copier lamp 19 falls. The light beam IB hits a row of photocells above the guide plate 20. When the front edge ^? If you pass the gap 17, this is registered by the cells. The position of the seam edges of the original is also registered by the photocells. Finally, the transparency of the original is also measured by the weakening of the light beam. Through the

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iisltsnsn measured values v? (srden> as further below. sus ^ sfuhrt feeding, cutting and aligning the copy material ^ as well as the copying speed controlled.

After passing the plate, the original 10 is transported by the conveyor belt: L4 to the contact shell 22 with the conveyor belt 15. There the original is congruently combined with the sheet of copy material ί3 and both are guided along the copy cylinder 21 and exposed in the process. The arranged in the center of the copying cylinder light source IQ is z. B. a high pressure mercury vapor lamp. The exposure time is regulated by adjusting the transport speed. In this case, the measurement value obtained on the photocells 20 for the transparency of the original is used to control the drive speed for the conveyor belts 15 , 13 and 14.

After passing the copy cylinder, the original: 3 and the copy material 23 are behind the point of contact 24 of the belts 13 and 15 separated in a known manner by means of suction air.

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The endless conveyor belts 13. I ^ and 15 can either each consist of one piece and perforated »consist of one or a number of parallel strips. On the front sides, the columnar space surrounded by each conveyor belt is closed off by walls, so that this space with the outside air only through the perforations or the slots between connected to the strip. Suction lines are introduced into the end faces through which the air is removed from the Inside is suctioned off. In this way, the original 10 and the copy material 23 are firmly attached to the appropriate conveyor belts sucked in. The hatched areas 25, 26, 27 and 28 indicate schematically the zones under suction.

The original 10 is after separation from the copy material 23 from the conveyor belt 13 up to the table 29 transported. At this point, the suction can be interrupted if required. The original then separates from the curved conveyor belt and is ejected onto table 29. If a repetition of the copy is desired, the suction air interruption is not made

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and the original again over the plate 16 and that Conveyor belt 11 returned to contact point 22, where it is merged with another sheet of copy material and the cycle is repeated. at the repeated passage of the original 10 through the light beam 18, the measured values for the position of the Side edges determined again and used to correct the side of the copy material.

Optionally, the original can also be ejected to the rear of the device by being transported over the conveyor belt 13 , the plate 16 and the conveyor belt 1 and, after adjusting the guide plate 30, is directed into the collecting tray 31 by suitable control of the suction air. In this case, it must of course be ensured that the original does not restart the copier material supply when it passes through the light beam 18.

The exposed copy material 23 is from the conveyor belt 15 transported on and transferred to the conveyor belt 32. The belt 32 can be

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be built like ax Bender 13,: L'i and 15 and runs over rollers 33, 34 and 35. The transition takes place in the area of the roller 33 by a suitable suction air control, the conveyor belt 32, like the belt 15, rotating counterclockwise. The copy material is then fed through the development section 36. In the present case, development takes place with heated, moist Am.mouid.kgas, which is advantageously blown onto the surface of the copy material and then sucked through the perforated conveyor belt 32, as described in US Pat. No. 3 ¹ J ¹ IO 944. After leaving the developing room, the developed copy is separated from the conveyor belt 32 and guided by the adjustable guide plate 37 into one of the collecting trays 38 or 39.

The copy material supply is in the supply car 40 in the form of roles 4i, 42 and 4 3 with different Broad. With the aid of the measured value for whose width the copy material roll with the correct width is selected. Then the transport

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nism for this role depending on the passage. the front edge of the original through the measuring light beam but started with an appropriately set delay. The copy material runs from there the conveyor belt 46, which is constructed similarly to that Conveyor belts 13, 14 and 15 · By the passage of the trailing edge of the original through the measuring beam the Kopxermaterialtransport brought to a standstill with the same delay as above, whereupon the Cutting device 44 cuts off the 31att 23, the length of which corresponds to that of the original 10. The conveyor belt 46 advances the sheet of copy material 23 on the conveyor belt 15. By suitable known synchronizing measures it is effected that the leading edges of Original and copy material at the same time the point of contact 22 reach. While the Kcpiermaterialblatt 23 lies on the conveyor belt 46, its position is transverse to the Direction of transport in accordance with the location of the Copy material brought. This is done by appropriate transverse displacement of the carriage 45, which the conveyor belt 46 carries. Di <; Shift is in turn caused by the passage of the side edges of the original 10 through the measured values obtained by the light beam Hi in the manner

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controlled, daft original and copy material center on Come to rest in the middle. The transporting surface of the conveyor belt 46 is for clarity half represented as a plane. Of course you can “Any suitable curved one for the sake of fuel economy Have shape.

The supply cart 40 is arranged so that it can be easily separated from the remainder of the apparatus and replaced can be. It contains copy material rolls 4l, 42 and 43 from e.g. B. different Wide or different types in terms of sensitivity to light, hue and the like. Of course a larger number of rolls or a number of stacks of pre-cut, Sheets of copy material of different sizes can be accommodated automatically according to the size of the original can be selected and supplied.

If several copies of a relatively short one Original are to be produced, the total copying time can be shortened by the original na <ih

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leaving the copying zone is allowed to rotate at increased speed over the belts 13 and 14. For this purpose, two rotational speeds are preselected: the highest possible rotational speed and the speed required for correct exposure. The original and the copy sheet enter the copier at the highest possible speed until their leading edge passes the photocell 47. The current pulse triggered in this way switches to the exposure speed determined by the transparency of the original. which is maintained until the trailing edge of the original and copy material has passed the photocell. Of course, the device can also be switched so that the highest possible speed is switched on for the first time when the first exposure has taken place, and then in each case during the return of the orig. is effective at the exposure station.

The apparatus can also be fed from the operation table 49 from. In this case, the running direction of the conveyor belts 13, I ¹ *, 15 and 32 is reversed. The copy material 50 and on it lie on the table 49

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the original 51. They are pushed into the device by hand until they are gripped by the conveyor belt 15 and transported through the copying zone. They are separated behind the touch point 22 and the original is ejected into the tray 31. The exposed copy material is discharged from the conveyor belt in the region of the roller 3 ² J to the conveyor belt 32, from which it is guided in a clockwise direction through the developing element 36 and then ejected into the trough 38.

This operation will be omitted in the photoelectric control can, for the production of copies Einze ^1, in particular of very large originals aienen, wherein the insertion of the copy material by hand due to the length of the original is appropriate. The copy material will be j .... _A e = m drop by hand from roll 52 and cut off according to the length of the original.

When repeating the development of a copy or isolating an exposed sheet of copy material is to be developed, the sheet can be ε-fed through the slot 53 in the developer section.

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Claims (1)

KI p32 / Obm * t38l FP-Dr.N.-ur 6.4.1970 -23- "Claims 1 · copier with a rotating Copy cylinder and at least one part of its circumference surrounding conveying device for the original and the copy material as well as having a device for automatically feeding the copy material by three cooperating conveyors, of which the first conveyor the original in contact with the copy material is transported along the copy cylinder and the second and third conveyor means arranged so that they sequentially the original from its input into the device up to the merging with the copy material transport and that the way of the original at the transfer point between the second and third Conveying device intersects a light beam masked out of the copying light source and which is directed to at least a photoelectric cell falls. 7013894 05/07/75 K 1952 / Gbm I38I FP-Dr.N.-ur 6.4.1970 -24- 2. Apparatus according to claim 1, characterized characterized, let the conveyors be endless conveyor belt systems, each of which consists of one single endless. Conveyor belt or a number of parallel endless conveyor belts. 3 · Device according to claim 2, characterized characterized in that the conveying system is permeable to air and facilities for extracting the air from your room surrounded by each conveyor belt are provided. * Device according to claim 1 to 3, characterized in that the transfer point between the second and third conveying device is located above the copier cylinder and from a light inaccurate. '*;<- ..Jssigen guide plate for the original existing "'juer to the transport direction has a slot through which the light beam hidden from the copier light source falls. 5 device according to claim 1 to * l, characterized in that the second and third conveyor 30 are arranged that the one 7013894 05/07/75 K 1952 / Gbm 4381 PP-Dr.N.-ur 6.4.1970 -25- da3 original from the handover point to one before De runnings located at the copier station with the One conveyor is transported and the other transports the original to one behind the Xopierstation Point of contact with; the first conveyor separates from the copy material and from there to aer transfer point transported back. 6 · Device according to claim 1, characterized characterized as having a supply of copy material in the form of rolls of various widths and that the photoelectric cell contains the choice of the width of the copy material, the switching on and off of the copy material transport, controls the cutting of the copy material and the copying speed. 7 · device according to claim 1 or 5, characterized in that the photoelectric cell scans the side edges of the original and then scans the Shifting the position of the copy material in the direction transverse to the transport direction controls. 7013934 05/07/75 K 1952 / Gbm 4381 PP-Dr.N.-ur 6.4.1970 -26- 8. Apparatus according to claim 7, characterized in that a carriage is provided for the transverse displacement of the Kopiermateria.18, which between the copy material supply and the feed point of the copy material is arranged on the first conveyor. i-flyr 7013894 05/07/75