DE2903447A1 - RECORDING AND CONTROL IMAGE DEVICE FOR PHOTOPLASTIC FILMS - Google Patents

Description

PATENT ADVOCATES A. GRÜNECKER

DPL-INQ

H. KINKELDEY

URGENT

2903447 W. STOCKMAIR

K. SCHUMANN

P. H. JAKOB

OPL-IMl

G. BEZOLD

DR RBlNXI- an.-CHBVL

8 MUNICH

MAXIMILIANSTRASSE

P 13 533

Recording and control image device for photoplastic films

The invention relates to a recording and control image apparatus for photoplastic film, which serves to selectively through an electrostatic charge in the image pattern and thermally deform corrugated image patterns in the image areas of such a film.

In US Pat. No. 3,547,628 and US Pat. No. 3,291,601, an apparatus is described which comprises a photoplastic film uses a three-layer structure that is transparent to allow the light rays projecting the image to pass through. Both patents describe a device

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which sequentially transports such a film through at least four stations. At the first station will a uniform electrostatic charge on the heat-deformable photoconductive outer layer applied. At the second station this evenly charged outer layer becomes exposed to the light of an image in order to produce the uniform electrostatic through the activating radiation Selectively discharge charge in the bright areas of the image projected thereon. A heater on the third station heats the outer layer to soften it and deform or curl the image areas to allow to carry the remnants of the electrostatic charge. An optical streak projector projects at the fourth station Rays of light through the thus deformed film to create a legible copy of the image that is over a deformation is recorded on the film. Such systems and their mode of operation are undesirable expensive and complicated.

In one device described in US Pat. No. 3,781,106 and US Pat. No. 3,992,090, a photoplastic Film related to a four-layer structure, with the fourth or outer layer consists of a thin, highly reflective material. In US Pat. No. 3,869,201 described a microfiche made from such a film material. The device described in US Pat. No. 3,781,106 has Devices for recording and projecting that share optical elements so that micro-recordings of the successive recording or data sheets in sequence on successive fields of a sheet film formed with several fields or on the successive images of a strip-shaped film, checked and then optionally corrected if necessary,

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can be supplemented or brought up to date. However, the device is quite complicated and has the disadvantage that the projection screen for the use of the device as a projector is part of the template holder for the Is originals that are to be photocopied onto the film. The device can therefore not be used as a projector, when an original is capable of being photocopied. The optical system is also based on beam splitting Components and is limited to the use of specular or reflective photoplastic film that, As it turned out in the meantime, out of all order I am sensitive and there is a risk that it will turn on its reflective layer is damaged during normal handling.

U.S. Patent 3,869,201 shows that the film plate can be sized to meet the requirements of the National Microfilm Association (NMA) microfilm standard for 24x microforming. That is, such a film plate can be about 105 mm long and 148 mm wide, with 98 fields or pictures, can carry the information images and 12.5 mm long and 10 mm wide, _r are in a rectangular pattern of seven transverse or lateral rows with fourteen such fields or image areas are arranged in each row. As shown in US Pat. No. 3,992,090, the 98 fields can conveniently be addressed individually by using a rectangular pair of coordinates based on the letters A to G, each of which is a different row of the seven rows from top to bottom identify,. the numbers one through fourteen each identifying, from left to right, a different column of the fourteen columns corresponding to the fourteen image areas in each row. This patent also states that the film plate is in the form of a special film card in a carriage

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can be held and can be transported along orthogonal paths to selectively the desired image area of the Bring the film card into a fixed optical path for recording. A The beam of light carrying the image is projected through a lens until it is in focus on a transverse film holder which has a side plate that extends to the rear of an area of the photoplastic Film is located, which covers a reflective surface area in the form of a film image. Between the lens unit and the film area held by the plate is provided with an optical opening so that the back of the film, which is opposite its reflective surface, is accessible in this opening. A heated metal block is movable mounted in such a way that it can be pushed into the panel opening in order to access the accessible area on the rear side of the film to come into contact and thereby to cause a softening of this film area by means of heat conduction, the is located between the optical size and the plate opening. An electrostatic charge of the image area takes place via a corona generator, which is in a fixed position in the Distance is kept above the film plane. It is trusted that there is a significant potential difference between the conductive surfaces of both the plate and the heated block on the one hand and the conductive layer of the multilayer photoplastic film, on the other hand, developed so that the film adheres closely to the plate and to the heated Create block. This recording device does not provide the ability to read the images recorded on the film or to control.

The object of the invention is therefore a combined recording and control image device for use with the transparent one Kind of a photoplastic microfiche. Another goal

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of the invention is to remove the document holding station from the viewing station to separate while at the same time doubling the expensive optics and the use of beam splitters or similar facilities should be avoided. The invention is also intended to provide a more accurate fixed Holding the film on the plate, a convenient communication between the device and the operator about it, that a selected image has been exposed * and that essentially instantaneous verification is and is to be achieved Corona scattering or overwriting can be avoided.

In a preferred embodiment of the invention, the basic reduction ratio is increased somewhat, namely 25 times, so that an original is reduced 2Sx across the original plane and the plane of the sharply mapped image in the image area on the film card. This increased reduction ratio offers originals with a size of 21.6 χ 27.9 cm a sufficient margin for errors in the exact arrangement of the card and other components and offers a guarantee against loss of information at the outer edges of the original «. Control for image, that is, for reading the recorded image in an image area the same lens system is used, wherein the length of the optical path or the image path is chosen so that on a viewing screen an image appears, the χ only slightly less than 21.6 27 That is 9 cm. Due to the change in the path length and other factors inherent in the use of this type of recording film, the position of the objective or lens system must be changed between the recording mode and the control mode. In addition, when inspecting the image, it is desirable that the operator be able to control the adjustment of the sharpness of the image on the observation screen. The sharp image of the image on the surface of the photoplastic film is in the process of recording

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however, extremely crucial and should preferably be left to the setting in the manufacturing company. These Requirements that are otherwise incompatible with one another are met according to the invention via an arrangement through which all by the operator controllable setting elements for focusing the lens are decoupled when the device operates in the recording mode, and the lens when the device is in monitoring mode returns, is automatically shifted to a basic position which is related to the monitoring path length, and an adjustment controlled by the operator can be superimposed on it.

In a modified embodiment of the invention, an additional lens is provided by a factor of 32 However, this embodiment is based on recording for copying an image with a size up to 27.9 χ 35.6 cm on an image area limited to a standard size picture card. Since the surface area of the observation screen remains unchanged and it it is desirable to always use the entire capacity, as well as the image area remains unchanged, only the lens is required with 25x magnification used for image control, regardless of the reduction ratio when recording has been chosen.

An exact clamping of the film card is achieved by that the corona generator housing is movably attached, so that it can be pushed down to press the film against the underlying panel structure. An additional advantage is obtained in that neither the corona discharge nor that carrying the image information Can scatter light laterally so that it hits an adjacent image area, which would otherwise lead to an error.

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ORIGINAL INSPECTED

known as overwriting. In addition, the Image area that is currently being exposed is shielded from stray light in order to avoid fogging.

The back of the film is exposed to heat via a heated block that passes through an opening in a plate as is similarly described in U.S. Patent 3,992,090. However, it is a powerful vacuum device provided so that the film snugly against the block more effectively than it can be achieved when electrostatic attraction is used, as is the case with the subject matter of US Pat. No. 3,992,090.

In principle, the possibility of image monitoring of the device is such that an unintentional Recording on an already exposed image area on an image card is avoided. Preferably located the device usually in the image control mode with a film card inserted and to the image area, step by step is transported on which a recording is to be made. If this area is already exposed or occupied, will the image recorded there on the observation screen appear to warn the operator who then moves the movie card to an unoccupied image area or can be transported further to an image area that can be deleted and on which a recording can be made again can. In certain circumstances it may be desirable to have an automatic indication that an image is occupied is what can be achieved by a sensor device used in a further embodiment of the invention is used. Such a sensor takes advantage of the fact that a film in an exposed image area as a whole undergoes a deformation due to the heat applied to the formation of the image, which can be perceived as an indication, that the image area is occupied. It can also be a marker

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projected and developed onto the safety margin area between the total developable image area and the image area assigned to receive an original image of maximum size, with this marking can be perceived via a suitable sensor for an automatic display.

One aspect of the invention is a recording and control image device for photoplastic films to selectively corrugated image patterns in image areas of such a film via an electrostatic corresponding to an image pattern Forming a charge and a thermal deformation, the device according to the invention being an original holding station, means for illuminating the original holding station; means for projecting an image from the original holding station via a first optical path, a device that contains a permeable readable card of a photo- three-dimensional film at selectable image positions can be gradually transported further in an image plane perpendicular to the first optical path, means located in the first optical path between the image plane and the document holding station is arranged to transfer an optical image of the original at the original station onto the surface, the image card in to image the image plane sharply, a projection light source, which is on the opposite of the imaging device Side of the image plane is located, a viewing screen, a device that can optionally work to to interrupt the first optical path and to form a second optical path, which successively from the projection light source via the image plane and the imaging device leads to the observation screen, a device which applies an electrostatic charge during a recording cycle places the image card in the image plane on an image area.

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which is crossed by the first optical path, a device the film in the image area during the recording cycle Exposing heat to form the image and having an operator operated control device, to control the optional operating device.

A particularly preferred idea of the invention consists in a recording and control image device for photoplastic A film comprising a rotatable mirror which in one position has a first optical path from a Forms the original holding station via an objective to form an image plane in which a plate is provided, which is transparent holds readable film card from a photoplastic film. In a second position of the rotatable mirror results a second optical path from a projection light source via the image plane and the objective to an observation ™ umbrella. In one embodiment, an objective nosepiece has multiple objectives with different focal lengths in order to ensure different enlargement ratios and thus original originals with different sizes to photograph. System controls are for automatic Return to that lens provided that a full screen projection of the image from the image card onto the observation screen regardless of the one selected for photographing Reduction ratio supplies; The option of focusing manually is only possible in image control mode possible, this setting is decoupled during photocopying. A heated block to develop the images on the various image areas of the film card is arranged so that it works like a valve to create a negative pressure at the bottom of the film card when the heated block is applied to it to keep the film card in place rests against the block. An additional valve device-ira heated Block ensures that the vacuum is quickly released when the heated block is withdrawn. at In a modified embodiment, one on light

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appealing diode and a light source related to perceive a deformation of the film in the image area, what as Proof serves that a picture has already been recorded there beforehand. A light shield is provided to a fogging and a blurring of the picture when Avoid photocopying.

In the following, preferred exemplary embodiments of the invention are explained in more detail with reference to the accompanying drawings:

Fig. 1 shows an embodiment in a perspective view the inventive recording and control image device for photoplastic Movies.

Fig. 2 shows a schematic view of the basic components the device shown in Fig. 1, the image control operation.

Fig. 3 shows a partial plan view of certain mirrors and the observation or control screen of the device shown in FIG.

Fig. 4 shows a side view of the mirrors and control screen of Fig. 3 viewed from the left Page.

Fig. 5 shows in a schematic view similar to Fig. 2, the components for the recording or Photography business.

FIG. 6 shows, in a partial plan view, the heated block and its carriage that are used in that illustrated in FIG Device are used.

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FIG. 7 shows a sectional view on an enlarged scale along the line 7-7 in FIG. 6.

Fig. 8 shows a schematic perspective view of the main components that make up the carriage of the heated 6 to control it.

Fig. 9 shows in a schematic side view, the

The components shown in FIG. 8 show the movement of the components.

Fig. 10 shows a partial cross-sectional view along the

Line 10-10 in Figure 6 and the interrelationship between the heated block , the plate, the microplan film and the corona box in more detail.

FIG. 11 shows the heated one in a view similar to FIG Block and the corona box in their relative position to the film card to form a Image.

Fig. 12 shows a partial side view of the means for attaching and handling the corona box.

FIG. 13 shows a view of the components shown in FIG. 12 from below.

FIG. 14 shows a partial sectional view along the line 14-14 in FIG. 12 on an enlarged scale.

15 shows an enlarged view of a keyboard in a modified version of the in Fig. 1 shown embodiment, which provides two different magnifications.

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16 shows a partial plan view of an adjustment device and a holder for the objective lens. version, which in a modified embodiment with the keyboard shown in FIG be used.

FIG. 17 shows a perspective exploded partial view of the key elements in FIG. 16 to explain the various movements and adjustment possibilities of the device.

Fig. 18 shows another modified embodiment of the keyboard used in use with the surface sensor.

FIG. 19 shows a schematic diagram similar to FIG Representation of the components that are provided in an exemplary embodiment that includes the surface sensor used, the device is in the operational state.

FIG. 20 shows, in a view similar to FIG. 19, the components during the calculation process.

FIG. 21 shows, in a view similar to FIG. 19, the Components in the image control.

FIG. 22 shows, in a partial top view, the sensor and the interrupter in the exemplary embodiment shown in FIGS. 18 to 21.

FIG. 23 is a cross-sectional view taken along line 23-23 in FIG. 2.

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In Fig. 1 is a designated by 30 Äus Ausführungsbeispiel the Invention shown. With the exception of the keyboard 31 are all components received in a housing 32. One opening 33 in the housing 32 makes the observation screen 34 accessible, while an opening 35 makes the document holding station 36 accessible power. The original holding station 36 has a flat horizontal surface on which the reproduction boundaries or boundaries 37 can be applied, which show the operator the maximum template limits. Another opening 38 is located above the keyboard 31 and is used to create a Insert photoplastic film card onto which the images are to be recorded. An operating switch 39 controls the main power supply for the devices located in the housing, while a manually operated adjustment knob 40 and a key operated switch 175 for reasons described later are provided.

The keyboard 31 has a number of control buttons that are used both to define the various modes of operation of the Device as well as to select the image area on the film card. The central group 41 of 21 buttons that with The letters A to G and 1 to 14 are designated, is used to display the desired image via right-angled coordinates the film card. The remaining buttons are button 42 labeled "Hi-Lo Monitor" for a powerful and weak control image, the button 43 labeled "Photograph" for taking pictures, which labeled "Advance Frame" Button 44 for the image advance, labeled "Unload" Button 45 for output, the button 46 labeled "Erase" for erasing and the button labeled "ON-OFF Monitor" for switching the control image on and off. Furthermore, a signal lamp 177 is provided, which indicates that the device ready for photocopying 1st. -

As shown in Fig. 2, the document holding station is provided with a device in the form of light emitters 47 and 48 in order to illuminate the original holding station 36. Even though

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only two light emitters are shown in Fig. 2 is preferred a bank of four light emitters is used in a preferred embodiment, with a second Emitter pair is located behind the two emitters shown in the drawing. A facility in the form of a first Mirror 49 is used to take an image from the original holding station 36 to project via a first optical path, the initial part of which is indicated by dash-dotted lines 50 and 51 in Fig. is shown.

When the film card is inserted into the device, it is located they are in an image plane 52 which, as will be shown later, is arranged perpendicular to the first optical path. A Objective 53 is arranged in the first optical path between image plane 52 and original station 36 and forms a optical image of the template at the template station on the The surface of the image card in the image plane 52 is sharply defined. A projection light source 54 from a projection surface 55, a mirror 56 and a collecting lens system 57 is on the

the imaging device or the lens 53 opposite side of the image plane 52 is arranged.

A rotatably mounted mirror device 58 can optionally be actuated in the manner described later in order to interrupt the first optical path and to form a second optical path which leads in sequence from the projection light source 54 via the image plane 52 and the imaging device 53 to the observation screen 34, which is not shown in FIG. 2 and lies in front of the plane of the drawing in FIG. 2, as shown in FIG. 3. It can be seen from FIGS. 2, 3 and 4 that the second optical path is deflected from the mirror 58 to the mirror 59, then to the mirror 60 and finally to the observation screen 34. A light interrupter 178, which is under the control of an actuator 179 , is disposed above the lens 53 to independently interrupt the first optical path to the image plane in a manner described later.

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A corona generating element in a box or housing 61 is at one end of a lever arm 62 is held and is used during a recording cycle to apply an electrostatic charge to the image card in the image plane 52 at an image area that extends from the first optical path is crossed. A heated metal block or hot block 63 is at the end of a slide member 64 to expose the film in the image area during a recording cycle to heat that affects the image. trains.

When the energy supply for the devices is switched on by actuating the energy supply switch 39 is turned on, the emitters 47 and 48 are turned on, the breaker 178 is withdrawn and takes the rotating mirror 58, the position shown in Fig. 2. The mirror 58 is connected to an electrical switch 65, the is connected to the projection light source 54 in order to supply it with energy only when the mirror device 58 assumes the position shown in FIG. 2, namely a position in which it forms the second optical path, in which an image is projected onto the observation screen 34 will. Although not shown in the drawing, a film card carrier is provided which. at slot 38 in the housing 32 appears as shown in FIG. The carrier can be designed approximately as it is in US Pat. No. 3,992,090 is shown, except that it only has to be large enough to accommodate the film card without an additional index part, which is shown in US Pat. No. 3,992,090 »The film card can be inserted into the carrier and there can be an index position be selected by one of the alphabetically labeled buttons A to G to select the desired horizontal row on the film card and one of the numerically labeled buttons pressed to the vertical column to select. When the first pair of index buttons is pressed, the card carrier is automatically in the image plane 52 brought into position and over a suitable X-Y slide device arranged at the desired image position. The corona box is in place during this handling of the film card

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under the control of an attached actuator 66 in a raised position. Once the slide device reaches the selected position, the corona box 61 is lowered by a control signal until its lower surface grips the surface of the film and presses it against a plate 67.

The objective 53 is attached to an objective plate 68, which is about a pivot point 69 via a lifting element 70 below the control of the manually operated control button 40 can be moved. As shown in Fig. 2, stands the lifting member 70 via a connecting member 71 with the rotatable mirror device 58 described later Reasons in connection. Additional actuators 72 and 73 are used to each slide 64 for the heated Block and the rotatable mirror assembly 58 to control.

When a film card is inserted into the device, the device's internal logic selects a reduced intensity. ity level for the projection lamp 55. The operator can then use the labeled "Hi-Lo Monitor" Button 42 either a lower or a higher light intensity select 55 for the projection lamp. The reduced intensity is generally chosen in order to increase the service life to extend the lamp. The viewing screen 34 shows the operator an image of what is in the selected image area is recorded on the card. If the selected image area is unoccupied or has no recorded image, this fact becomes visible on the observation screen. Conversely, when the operator has a busy picture of the film card has chosen, what is recorded in this image area will and can appear on the observation screen there are sharply imaged there by the operator by actuating the control button 40.

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When the selected image area is unoccupied and the operator an original to be photographed within the size and boundary lines 32 of the original holder 36 has arranged, the operator can press the photographing button 43. If the signal lamp 177 lights up, what indicates that the mercury vapor lamps have reached their full light intensity have, which is the case after a start-up time of about 5 minutes, actuation of the button leads 43 via a suitable control circuit that the working sequence of the device begins. During this start-up period a blocking circuit is activated, which triggers a Photographing or erasing cycle or a writing cycle prevented, if this is provided, as will be shown later. After pressing button 43 there is the first work step is the mirror device 58 from the position shown in Fig. 2 in the! shown in FIG Position to rotate. At the beginning of such a rotation of the mirror device, the switch 65 is actuated to the To interrupt the power supply of the projection lamp 55. When the device 58 is in the position shown in FIG reached, it separates the lifting elements 70 from the lens mount 68 via the connecting member 71, so that the lens is no longer subject to the control of the operator, but a position specified in the manufacturer's factory for the optimum Imaging of an image on the image plane 52 occupies. Then, as shown in Fig. 5, is the first optical path from the template station 36 via the mirrors 49 and 58 to the objective 53 and through the tubular corona housing 61 the image plane 52 is completed.

As soon as the mirror device 58 has reached the position shown in FIG. 5, the corona generator, which is located in box 61, energized to apply an electrostatic charge to the film card in image plane 52 to be applied to the image area immediately below the corona box.

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At the same time, the optical image from the original station 36 is transferred to the image area via the devices described above projected onto the image card. This creates an electrostatic pattern in the photoplastic layer the film card. The corona generator is supplied with energy for approximately 2 seconds, after which it is switched off. To 0 to 2 seconds, depending on an adjustable setting of the device, the heating block 63 is off brought the position shown in Fig. 2 in the position shown in Fig. 5, in which he through an opening in the plate 67 against the lower surface of the film in the image plane 52 protrudes. More details of this mutual Actions will be described later. However, before the heating block catches the film, the breaker becomes 178 moved by the actuator 179 to interrupt the first optical path, creating a blurring of the image is avoided if the film is vibrated by being caught by the heating block becomes or is shaken.

The temperature of the heating block 63 is controlled by thermostatically controlled electric heaters at a certain level where the image develops within about 1 second of contact with the film surface that a wave formation is caused. After about 1 second of the film contact, the heating block 63 is withdrawn into the position shown in FIG. Although it is not shown in the drawing, a locking device between the carriage 64 for the Heating block and the electrical control circuit provided so that when the block 63 puts the film on the plate 67 detects the return movement of the mirror device 58 into the standby position shown in FIG. 2 is triggered. When the block 63 drops downward away from the plate 67 at the beginning of its return movement, it disengages

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a retraction of the breaker 178 and a delayed automatic further transport of the film card to the next adjacent image position. The delay is 0 to 2 seconds with the aid of a device not shown adjustable, during which time the mirror 58 switches back to the mode of operation of the image control and the operator can quickly view the quality of the image being developed. After a certain Delay begins automatically switching, which is accompanied by the fact that the corona box 61 will be over Actuator 66 is raised so that it exposes the film surface as it moves.

When the operator sees the recorded on the image area If you want to check the picture further, you can reset the film card to the desired picture using the coordinate selection buttons 41 retrieve. When the operator has determined that the image quality is satisfactory, he can do the Picture card to the next available one. Further transport the image by having either two corresponding Coordinate buttons or, more conveniently, presses the image transport button 44 which, when pressed, the film card he switches to the next following picture «. This Button 44 is also beneficial when scanning a series of images, since it .. every time it is pressed, the Image card advanced by one image. The template at the template stand 36 can then be exchanged, and that The next image can be recorded.

Under certain circumstances, the operator can act as a do not consider the film card necessary after each cycle of photography to control. In this case, it can lock the rotating mirror 58 in the position shown in FIG. that button 176 is pressed. After that, the photography cycles can begin without the time lag that is based on the rotation of the mirror 58. A subsequent

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Pressing the button 176 returns to the movement of the Mirror 58 lead, as described above.

When a busy image is to be erased, the spring-loaded key switch 175 is actuated Position held and the delete button 46 is pressed, whereupon starting from the position of the device shown in Fig. 2 the temperature of the hot block 63 is raised to a value for erasing the image and the hot block 63 is moved into contact with the film card for a period of time sufficient to erase the image in the frame. The hot block 63 is then withdrawn into the position shown in FIG. 2 and the image control is then switched on to view and check the deleted image field. A new image can then be added if necessary recorded on the deleted image field.

In the following, the device consisting of the hot block 63 and its slide 64 will be described in detail with reference to FIGS. The carriage 64 is fork-shaped at one end with two arms 74 and 75, at the ends of which a transverse strut 76 is fastened by screws 77 and 78, which at their ends carry rollers 79 and 80 with flanges. A vertical pin 81 is secured in the center of the transverse strut 76 by a screw 82. The upper end of the pin 81 is tapered and provided with a valve closing surface 83 which is complementary to a conical seat 84 near the upper end of an axial bore 85 which extends only partially through the block 63 from the bottom up. As best shown in FIGS. 10 and 11, the pin-like element 81 is arranged in the bore 85 so that it holds the block 63 freely under the influence of its own weight. Lateral passages 86 and 87 connect the upper end of the bore in block 63 with the outer side of the block unt <^: step

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or shoulder 88. As best shown in Figures 6 and 7, a plate 89 is attached to the underside of the block 63 which carries on one side an arm 90 which is loosely seated in a groove in a bracket 91, which is attached to the slide element 64. The engagement between arm 90 and bracket 91 prevents rotation of block 63 about pin 81. Another arm 92 is attached to the underside of block 63 and extends below cross brace 76 and screw 82 with a slight gap therebetween. The arm 92 prevents that. block 63 moves vertically away from pin 81 a distance greater than the clearance between arm 72 and the underside of cross brace 76, or more precisely the head of screw 82. There is enough play between the block 63 and its holder that it can be detached from the pin in order to open the passage between the bore 85 and the lateral passages 86 and 87.

As shown in Figures 8 and 9, the carriage 64 is connected at its surface to a second cross brace 93 which carries rollers 94 and 95 with flanges at their respective ends which ride on respective support rails 97 and 97. The actuating member 72 in the form of a vacuum actuating member is pivotably connected with its output arm 98 to the lower end of an arm 99 which is seated on the underside of the carriage 64. Normally , the carriage is biased by a spring into the position shown in solid lines in FIG. 9 , the roller running on a holding platform 100 and the roller 79 being held in the manner shown in FIG. 6 on a corresponding platform, not shown. When a negative pressure is above a non-illustrated input line to the actuating member 72, the arm is pulled 98 in Fig. 9 to the left, thereby moving to the left, the carriage on its rollers 79, 80, 94 and 95, while the hot block 63 in its

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remains in the lowered position. Upon further actuation of the element 92, the. Roller 94 is a stop element 101 which interrupts further movement to the left and acts as a fulcrum that causes the platform to pivot about the cross strut 93, as a result of which the hot block is raised to its upper position, which is shown in broken lines in FIG. 9 is. As a result, the surface of the block is guided upwards through the opening 102 in the surface of the plate 67 and into close contact with the image area of the film card 103, which is held by the corona box 61 in firm contact with the edges of the opening 102, such as it is best shown in fig.

During the entire operation of the device there is a negative pressure via the line 104 and the lateral passage 105 in the plate structure 67 on the side of the surface area or volume between the hot block 63 in its raised position, the film 103 and the edges of the opening 102 With the hot block withdrawn, as shown in Fig. 10, the pressure in the orifice 102 of the plate is essentially atmospheric. When the hot block is raised and begins to pass through the opening 102, however, it acts as a valve sealing the volume and pulling the film card 103 down into close contact with the surface 127 of the hot block 63. When the hot block 63 is raised, the pin 81 is of course in the valve-closed position relative to the valve seat 84. At the end of a record cycle or an erase cycle, however, when the slide actuator 72 begins to release the slide 64, the initial downward movement of the cross brace 76 will retract the pin 81 from engagement with the valve seat 84, thereby removing the passage from the

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Passages 86 and 87 to the bore 85 is opened. This causes the negative pressure in the space between the hot block 63 and the film 103 is immediately ventilated so that the block falls off and follows the pin 81 in its downward movement. When the vacuum line connected to line 104 stands, from which the line supplying actuator 72 is tapped, a collapse of the negative pressure by opening the passage between the bore 85 and the passages 86 and 87 likewise quickly release the negative pressure on the actuating member 72.

10 and 11 it can be seen “that the area of the platform next to the plate 67 is provided with air holes 106 which are connected to a rib-like network of passages in the lower surface, to which a compressed air supply is connected via a device not shown . This results in an air cushion table to map the film to move floating in its place and thus to prevent scratching of the surface of the card.

Details are given below with reference to FIGS. 12, 13 and 14. FIG of the element generating the corona discharge and its housing as well as its fastening described «. The corona box or the housing 61 is fastened between two insulating arms 62a and 62b, which at 107 at the lower end of a holding element

108 are hinged. The element 108 hangs from a mounting plate 109 and is provided with a transverse slot 110 to weaken element 108 and make it pliable close. A stand 111 hangs rigidly from the mounting plate

109 at a short distance in front of the holding element 108. The adjustment of the hinge point 107 on the stand 111 to and from the stand 111 is done through cooperation a bolt 112 which passes through the element 108 and screwed into the stand 111 and a set screw 113, which is screwed into the element 108 and on the side

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of the stator 111 is applied.

A solenoid 66 is suspended from the mounting plate 109, the armature 114 of the solenoid 66 with the lever arms 62a and 62b is connected via a transverse pin 115.

The lateral adjustment of the arms 62a and 62b is possible via an adjusting screw 116 which is held on the end of a stand 112 provided with a slot and which hangs down from the mounting plate 109, the adjusting screw 116 resting on the arm 62a, while a leaf spring 118, · Which is carried by a stand 119, rests on the arm 62b.

The adjustment of the hinge point 107 and the lateral position of the arms 62a and 62b is necessary in order to bring the contact area 120, which protrudes below the outside of the corona housing 61, into position, as is best shown in FIG. The landing area has the shape of the Roman number two and is dimensioned so that it corresponds to the spaces on the film card between adjacent image areas. The underside of the housing 61 is open within the entire rectangular space which is delimited by the central part of the contact area 120. The upper end of the housing 61 is provided with a circular opening .121 into which a cylindrical light guide element 122 extends telescopically, which is supported by a light shielding plate 123 which is attached to the lower end of the stand 119 and a second stand 124. The plate 123 and the light guide element 122 remain stationary, while the corona housing 61 can be moved in an articulated manner in the vertical direction in FIG.

A corona generating element or wire 125 is attached as shown in Fig. 14 so that that it protrudes into the middle of the cavity of the housing 61, made of an electrically insulating material, preferably a plastic, such as a polyacetal

909836/0521

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* 2903U7

se

made of plastic (Delrin).

The corona housing 61 thus has a first opening which is delimited by the contact area 120 and through which a corona discharge can pass when the corona element 125 is excited by applying a suitable voltage to the conductor 126 lies in a common plane and the device is attached relative to the plate 67 in the manner shown in FIGS. 10 and 11 so that the contact area can be guided down parallel to the plate 67 and onto the plate 67 that the region may be present in the plate 67 with a good alignment to the boundaries of the opening 102 'the means of the holder for the corona box in connection with Fig. described settings 12 and 13 are practical _r in order to obtain the desired orientation. the casing 61 has a second opening 121 which, as already described, is arranged opposite the first opening, so that the light passes through the openings in the housing 61 can fall “The corona wire 125 is so fine that it leads to negligible interference in the light rays that pass through the housing.

The embodiment of the invention described so far uses a single set of optics, which is only one Enlargement ratio allows for recording and reading. The related ratio is 25 times magnification. A much greater adaptability can, however can be achieved by installing additional lenses in order to provide selectable focal lengths so that different enlargement ratios can be obtained. In Fig. 15 a keyboard is shown, which is essentially similar to the keyboard shown in Fig. 1, but provisions for a 32-fold Has enlargement during the recording. As already mentioned in the introduction, when reading and when Only the lens with 25x magnification is used for image control.

909836/0 521

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2303447

In the following, details of the numerous lens fastening and handling devices are described with reference to FIGS. The fastening plate or the turret plate 68 carries two objectives 130, 131 at one end -fold magnification. The turret plate 68 has two pins at its opposite end. 132, 133 which protrude from their lower surface so that they engage in slots 134 and 135 in the elements 136 and 137. The pin 132 acts as a fulcrum for turret movement in the horizontal plane. The location of this pivot point can be set by loosening a fastening screw 138 and changing its position in the slot 139 in a bridge element 140. The element 137 is mounted movably in the longitudinal direction under the control of a vacuum actuator 141 and serves as a handling device _v for moving the turret plate 68 from a position on a stop 142 to a second position on a stop 143. The stops 142 and 143 are together with the Adjustment of the element 136 adjustable in order to center the objectives 130 and 131 in the desired optical path.

The revolver plate 68 is held vertically by two plastic sliding elements 69a and 69b at one end of an imaginary triangle, the apex of which is located on the pin 70, which sits in a vertical bore in a disk 144 , the upper edge of which extends vertically over the upper outer surface of the bridge element 140 protrudes. The disk 144 is attached to the side edge of the bridge element 140 in the manner shown. When the device is operating in the recording or photographing mode, the pin 70 is in its lower position, retracted in the bore of the disc 144, so that

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the turret plate 68 on the outer circumference of the disk 144 sits. That is, precisely that the adjustable bearing plate 145, which is attached under the turret plate 68, on the Disk 144 is seated.

As best shown in Figure 17, the bearing plate 145 is loose at its respective ends on the underside the plate 68 is attached by header pins located at 146 and 147 and upwardly through respective slots go into the "ends of plate 145. Two adjustable set screws 148 and 149 go through the turret plate of theirs upper outer surface and rest on the plate 145, around their Adjust the distance from the underside of the plate 68. When the turret plate 68 is against the stop 142 and the bearing plate 145 detects the disk 144, the adjustment of the adjusting screw 148 serves as a fine adjustment for the sharpness of the lens 130. If the turret plate 68 is in a similar manner to the stop 143, the adjusting screw 149 serves as Fine adjustment for the sharpness of the lens 131. These two adjustments are made in the factory in order for to provide proper focus when photographing or recording by the device.

Two levers 150 and 151, which are held by pivot pins 152 and 153, respectively, stand with the bridge member 140 and its associated frame not shown in connection. One end of the lever 151 protrudes under the pin 70 and is determined the lifting of the pin 70. The opposite end of the lever 151 is connected to a link 71, which is fixedly connected to the rotatable mirror device, as described above. The connecting link 71 can be in the form of a simple rope. One end of the lever 150 engages the outer end of the lever 151 and sits on top of this other end of the lever 151 under the force of a spring 154. An eccentric element 155, the

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909836/0521

is connected to an axis 156, rests on the opposite end of the lever 150. The axis 156 is with an adjusting knob 40 in connection. If, in the view shown in FIG. 17, an upward pull on the rope or on the connecting link 71, the right end of the lever 150 becomes out of engagement with the eccentric member 155 moved down. At the same time, the lever 151 is pivoted so that the pin 70 is below the peripheral surface of the disk

144 withdraws. This serves to decouple the manual setting and at the same time the focus adjustment of the lens of the precise adjustment of the disc 144 and the bearing plate

145 transfer. Whenever the rope 71 becomes tension-free, the pin 70 is raised so that it supports the bearing plate 145 detected while the lever 150 pivots to engage the eccentric member 155. This is used to adjust the focus the turret plate 68 to move a certain distance in a central position, whereupon some adjustment about the Button 40 and the eccentric element 155 can be done.

The operation of the device with a dual lens system is essentially the same as in the preceding has been described with reference to FIGS. However, when a film card is initially inserted, the nosepiece becomes automatically brought to the position of 25x magnification. If you want to photocopy an original that contains is no larger than 21.6 χ 27.9 cm, only the photograph button needs to be used be pressed. The mode of operation is then exactly the same as in the preceding with reference to FIGS. 1 to 5 has been described. However, if an original is larger than 21.6 χ 27.9 cm, i.e. in the illustrated embodiment up to approximately 27.9 × 35.5 cm, the button for the 32-fold enlargement in FIG. 15 is in front of the photographing button pressed. When the photographing button is pressed, the revolving nosepiece 68 is shifted to place the lens 131 in the optical path, while the rotatable mirror unit

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909836/0521

_ 43 -

direction 58 rotated to the photographing or recording position will. As shown above, the rotatable mirror device begins in the image control position return when the heated block 63 engages the film. The operation of the breaker 178 is the same as it previously described “When the objective system is in the 32x magnification position at the same time it shifts to the position for the 25x magnification. With this working sequence, the device is switched to the image control mode of operation, whereby the projection lamp lights up when the heated block is withdrawn. If the 32x magnification is selected, the nosepiece moves whenever the photograph button is pressed until the magnification is 25 times is selected by pressing the button for 25x magnification.

Instead of reading the image area of the image card on the observation screen To trust, it is also possible to provide a sensor around an exposed or occupied image area to investigate. In the following, an exemplary embodiment will be described with reference to FIGS Has facility. The modified keyboard for such a device is shown in Fig. 18. It differs From the keyboard shown in FIG. 15, that a monitor switch is inserted which has a different function than the with "Hi-Lo-Monitör" designated switch in Fig. 15 has. Of the The switch for image transport, originally called "Advance Frame", is now called "Exposed Frame" and has at least partially a slightly different function. Finally, the switch labeled "ON-OFF monitor" is through a Replaced the label button labeled "Annotate".

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909836/0521

_ 44 -

As shown in FIG. 19, the modified device is essentially the same as that described above with reference to FIGS. 1 to 5, modified by the construction of the double lens system of FIGS. 15 to 17. In addition, the photo interrupter 160, which is coupled to an actuator 162, carries at one end a surface vision sensor 161 which can move in and out of the optical path. As shown in detail in FIGS. 22 and 23, the interrupter 160 is pivotably attached to a housing 164 at 163 and, when it engages the stop element 165, is arranged so that it closes an opening 159 in the housing 164. When the actuator 162, which may be of the vacuum type, is energized, it rotates the interrupter 160 clockwise in FIG. 22 to expose the entire opening 159 and to remove the sensor 161 from the optical path.

In Fig. 19, this embodiment of the invention is shown in the operational state. When the main power switch is on, the emitters 47 and 48 are energized to illuminate the master station 36 and an image of any object on it down through the mirrors 49 and 58 onto the back of the sensor 161 to project, whereby the optical path is briefly interrupted. The sensor 161 is of the type commonly used to control sheet material, particularly fabrics, and includes a small light source and a photosensitive diode. As shown in Fig. 19, the picture card is clamped in the picture plane 52 by the corona box 61 which presses down on the picture card and presses it against the plate 67, as previously described. Of the . Sensor 161 is arranged on the optical axis above normal lens 130 with 25 times magnification and projects the light from its light source through the lens

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909836/0521

and the corona box onto the image area of the image card, whereupon it is reflected back upwards. When the picture card is complete is flat, the reflected light is picked up by the photosensitive diode, thereby enabling the control system to start a photography cycle. An indicator light 166, which is located in the "Exposed Frame" button marked in Fig. 18 will then go out.

If the image area under the lens 130 should already be occupied by a recorded image, the film has a curved shape or distortion that deflects the reflected light from sensor 161 so that it no longer hits the The light-sensitive diode in it hits. This lack of receipt of a return signal by the sensor 161 actuates a locking system that illuminates signal light 166 and prevents a photograph cycle is started when the photographing button labeled "Photograph" is pressed.

There are occasions when the operator may wish to label the occupied image area. In this In this case, he can first operate the key lock switch 175 and the one labeled "Annotate" at the same time Press the label button, which unlocks the system and triggers a photograph cycle can.

When an original is placed on the original holder 36, and the light 166 labeled "Exposed Frame" for one already exposed image area does not light up, the Operator press the photograph button labeled "Photographer" to initiate a photograph cycle »This leads to the fact that the actuator 162 withdraws the interrupter 160 with the sensor 161, and that if a 32-fold Magnification is selected, at the same time the nosepiece 68 is displaced in order to bring the objective 131 into position.

- 46 909836/0521

The rotatably attached mirror 58 is already in its recording position. As soon as the light breaker 160 is no longer in the light path, the image becomes projected through the corona box 61 onto the image area of the film and the corona generator is supplied with energy, to create an electrostatic pattern. The remainder of the duty cycle is essentially the same as in the previous one has been described on the basis of the other exemplary embodiments of the invention, except that the rotatable mirror 58 does not automatically move to the surveillance position. Rather, at the end of the photography cycle, the Interrupter 160 is returned to its position covering opening 159 in housing 164. Fig. 20 shows the relative Arrangement of components during the recording cycle, during Fig. 19, as mentioned above, shows the operational condition at the end of the recording or photographing cycle is taken. When a 32X magnification, i.e. that Objective 131 has been selected for the photography cycle, the objective nosepiece 68 will move back again to to bring the normal lens 130 into the optical path so that it cooperates with the surface vision sensor 161.

If an image area of the image card is to be viewed, the button labeled "Monitor" can be used for the control image of the keyboard in Fig. 18 are pressed to rotate the mirror 58 in the position shown in Fig. 21, in which the device is working in the image control mode - at the same time With the rotation of the mirror 58, the interrupter 160 is actuated in order to pull the sensor 161 off the opening 159. If it is desired to return to the recording mode, the button labeled "Monitor" can be pressed a second time provided that the switch is an alternating ON-OFF switch or two-way switch to the components returned to the operational position shown in Fig. 19 is shown.

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909836/0521

If so, the signal light 166 for an already exposed BiXd area lights up because there is an exposed Image area is located, the film card can move to the next. Image area can be further transported by using the "Exposed Frame "button for an already exposed image on the keyboard in FIG. 18 is pressed. This function of the The transport of the picture card is the same as described above for the other exemplary embodiments became.

If the picture card is to be thrown out of the device, eggs are used in all of the exemplary embodiments described button labeled "Unload" pressed for card issue »The card carrier will gradually move into a middle position and move to the access slot 38 in the front of the Move forward device.

In a preferred embodiment of the invention, the entire image area on an image card that can take a picture has a size of approximately 9.119 χ 11.735 ram Area that _{measures approximately 8 #} 636 by 11.176 mm, while reducing a field of 27.9 by 35.6 cm by 32 times results in an area of approximately 8.731 by 11.113 mm. A narrow, unused edge area therefore remains. If there is a suitable marking on the original holder that is projected onto this edge area or if a marking is developed there via another device whenever an image is impressed on the associated image area, the presence of the image of the marking in the edge area can be determined by a suitable Sensor are determined, which is a further possibility to provide a display for an already exposed image.

909836/0521

Claims (26)

P 13 533 BELL & HOWELL COMPAFr
6800 McCormick Road
Chicago, 111. 60645, USA Recording and control image device for photoplastic films PATENT CLAIMS AJ. Recording and control image device for photoplastic films for the selective generation of corrugated image patterns in image areas of such a film by means of an electrostatic charge corresponding to the image pattern and thermal deformation, characterized by an original holding station (36), a device (47, 48) for illuminating the original holding station (36) ), a device for projecting an image from the original holding station (36) via a first optical path, an input 909836/0521 (oae) aaa »* a telbx oa-aesao tilesramms monapat tblkkopisrer direction that gradually transportable a permeable readable map of the photoplastic film at selectable image areas in an image plane (52) perpendicular to the first optical path holds, a device which, in the first optical path between the image plane (52) and the original station (36) is arranged and an optical image of the original at the original station (36) on the surface of the image card in the image plane (52) images sharply, a projection light source (54), which is on the from the imaging device opposite side of the image plane (52) is a viewing screen (34), a device that is optional is operable to interrupt the first optical path and form a second optical path, that of the series after from the projection light source (54) through the image plane (52) and the imaging device to the observation screen (34), a device which during a Recording cycle an electrostatic charge on the Applies a device in the image plane (52) to an image area which is crossed by the first optical path (63) which exposes the film at the image area to image-forming heat during the recording cycle and a control device set in motion by the operator for handling the selectively operable ones Furnishings. 2. Device according to claim 1, characterized in that the selectively actuatable device is a rotatably mounted mirror device (58) which in one position completes the first optical path and excludes the second optical path and in a second position completes the second optical path and the excludes first optical path, an electrical switching device (65) which is under the control of the mirror device (58), and a device which connects aie switching device (65) to the projection light source (154) . 909836/0521 to only supply them with energy when the mirror device (58) occupies the second position. 3. Apparatus according to claim 2, characterized in that the imaging device is attached is that a focusing of the image is possible, that a first device is provided that a first focusing intended for the imaging device, which acts so that the optical image on the surface of a film card it is imaged in focus in the image plane (52) that a second device is provided which provides a second focus setting intended for the imaging device, which acts so that the light rays transverse to the second optical Fall away on the observation screen (34), sharply focused be, wherein the second device comprises a device that allows the operator the possibility of manual adjustment there, and that means is provided which the rotatably mounted mirror means (58) with the second device connects to release it from exerted control of the imaging device, whenever the mirror device (58) assumes the first position. 4. Apparatus according to claim 3, characterized in that the imaging device (130, 131) a variety of selectable focal lengths that one facility has is provided, which is coupled to the imaging device (130, 131) in order to always have a certain focal length then to be selected when the second optical Heg is formed and that a device is provided which is under the Operator control is available to select one of the focal lengths for use in the recording cycle. 5. The device according to claim 4, characterized in that the device applying the charge a corona discharge generating element (125) which is arranged in a corona housing (61), wherein the 909836/0521 - 4 - Housing (61) has a first opening through which a corona discharge is sent out when the corona element (125) with energy is supplied, a contact area (120) on the outside of the housing (61), which terminates with the first opening and lies in a common plane and has a second opening (121) which is arranged opposite the first opening is, wherein the housing (61) is held above the image plane (52) so that the first optical path through the openings in the housing (61) goes that a plate construction (67) with an opening (102), which is essentially a single Image area corresponds, is provided, which is arranged so that it carries at least a part of a film card that means is provided which the corona housing (61) along the first optical path from a first of the Plate construction (67) moved raised position into a second position in which the contact area (120) against a The film card is pressed on the plate structure (67) to press the film card against the plate structure, wherein the landing area (120) is arranged to have the panel structure (67) close to the bands of the opening (102) and that the housing (61) moving device is controlled so that the film card is only during the length of time during which it is gradually transported. . 6. The device according to claim 5, characterized in that the device that the film of the Image-forming heat exposes a heated metallic block element (63) with a flat surface that is movable is attached and has such a size that optionally the flat surface first passes through the panel opening (102) to capture an image area of the image card that appears on the Plate structure (67) is held, and has a device which creates a negative pressure in that of the picture card, the Block element (63) and the edges of the plate opening (102) 909836/0521 limited space, in order to bring the picture map into close contact with the surface of the block element (63) at the picture area. to pull. 7. The device according to claim 6, characterized in that the block element (63) with an axial Bore (85) is provided which only partially passes through the element (63) runs from the bottom up that a pin-shaped Element (81) is provided which is arranged in the bore (85) and has a free upper end on which the Block element (63) usually sits under the influence of its own weight that a device is provided which the pin-shaped element (81) at its lower end movably holds the block element (63) in alignment and out the alignment with the panel opening (102) ^ and that at least one lateral passage (86, 87) is provided, which the upper end of the bore (85) in the block element (63) connects to the outside of the block element (63) at a point within the volume in which the negative pressure is formed is, so that the downward movement of the pin-shaped element (81) the otherwise closed passage to Äassenluft opens so that the negative pressure collapses and. the block element (63) from the picture card and the plate structure (67) is released. 8. The device according to claim 7, characterized in that the device under the control of the operator has a device _t which is in functional connection with the device applying the charge, the device which exposes the film to the heat, and the step-by-step transportable device Holding device is to move the mirror device (58) from the second position to the first position at the request of the operator, whereupon the device applying the charge is activated to apply the charge for a certain time interval, whereupon the heating device is activated 909836/0521 - 6 "~ for a predetermined time interval to expose the image area to the heat forming the image, the mirror means (58) being in the second position substantially
is guided simultaneously with the activation of the heating device and wherein at the end of the time interval during which the film is exposed to the heat, the incrementally transportable holding device is activated to the film card
to the next following image position in a predetermined one
Transport pattern. 9. Device according to claim 7, characterized geke η η is characterized in that an optical Oberflächensichtein-
direction (161) is attached to a movable photo interrupter (160) which is on the axis of the first optical
Path above the imaging device when the selectively actuable device does not interrupt the first optical path, the interrupter (160) and surface viewer (161) being retracted during a recording cycle and whenever the second
optical path is formed, the surface viewing device (161) for the presence of an exposed image in the
Image area of the film card is responsive to generate a signal, and that means are provided responsive to the signal to warn an operator of something
continue to undertake. 10. The device according to claim 9, characterized in that the optical surface view
direction (161) is responsive to the deformation other than a flat surface which develops in the exposed image when the image of the film card is exposed to the heat forming the image. 11. The device according to claim 1, characterized in that g e k e η η that the imaging device is mounted so that an image focus setting is possible that a 9 0 9836/0521 first device is provided which determines a first focus setting for the imaging device, which acts so that the optical image is sharply imaged on the surface of the film card in the image plane (52), so that a second device is provided which provides a second focus setting for the Imaging device determined, which acts in such a way that the light rays falling transversely to the second optical path on the observation screen (34) are sharply focused, the second device _{having a device which gives the operator the possibility of manual adjustment f} and a device is provided, which connects the selectively actuatable device to the second device to release it from the exerted control over the imaging device whenever the selectively actuatable device does not interrupt the first optical path. 12. The device according to claim 11, characterized in that the imaging device (130, 131) has a variety of selectable focal lengths that a device is provided with the imaging device (130, 131) is coupled in order to select a specific focal length whenever the second optical path is formed, and in that means are provided under the control of the operator for some focal length for use during the recording cycle Select. 13. The device according to claim 11, characterized in that that the device which applies the charge comprises an element (125) which produces a corona discharge, which is mounted in a corona housing (61), that the housing (61) has a first opening, by a corona discharge goes out, when the corona element (125) is supplied with energy, that a contact area (120) on the outside of the housing (61) is provided with the first opening 909836/0521 " ⁸ " concludes and is on a common level that the Housing (61) has a second opening (121) which is arranged opposite the first opening that the housing (61) is held above the image plane (52) in such a way that the first optical path through the openings in the housing (61) is that a plate structure (67) is provided which has an opening (102), which is essentially a single Image corresponds to and is arranged to hold at least a portion of an image card that means a device the corona housing (61) is provided along the first optical path from a first one of the plate structure (6 7) moved raised position into a second position in which the contact area (120) against a picture card on the plate structure (6 7) is pressed in order to clamp the picture card against the plate structure that the The contact area (120) is arranged in such a way that it places the plate structure (67) close to the edges of the opening (102) detected, and that the device moving the housing (61) is controlled in such a way that it only moves the image card during the Releases time during which the picture card is gradually transported. 14. The device according to claim 13, characterized in that the device that the film of exposing the image to heat, a heated metallic block member (63) having a flat surface that is movable is attached and has such a size that optionally the surface can first pass through the plate opening (102), to capture an image area of the image card held on the plate structure (67) and means which creates a negative pressure in a tree by the image map, the block element (63) and the edges the panel opening (102), thereby bringing the image card into close contact with the surface at the image area of the block element (63) to pull. 909836/0521 15. The device according to claim 1, characterized in that the imaging device (130, 131) has a variety of selectable focal lengths that a device is provided with the imaging device (130, 131) is coupled to always a certain focal length when the second optical path is formed, and that a device is provided which is under the Operator control is available to select any focal length for use during the recording cycle. 16. The device according to claim 15, characterized in that the device applying the charge a corona discharge generating element (125) which is mounted in a corona housing (61) that the Housing (61) has a first opening through which a corona discharge emanates when the corona element (125) is energized is supplied that a landing area (120). is provided on the outside of the housing (61) with the first opening closes and lies in a common plane that the housing (61) has a second opening, that of the first Opening is arranged opposite that the housing (61) is held above the image plane (52) such that the first optical. Way through the openings in the housing (61) goes that a plate construction (67) with an opening (102), which corresponds substantially to a single image, is provided, which is arranged so that it is at least a part an image card that means is provided to move the corona housing (61) along the first optical path moved from a first position raised by the plate structure (67) to a second position in which the landing area (120) against a picture card on the plate construction (67) is pressed to clamp the picture card against the plate structure, the contact area (120) being arranged so that it grips the plate structure (67) close to the edges of the opening (102), and that it moves the housing (61) Device is controlled so that it releases the picture card only during the time during which the picture card is gradually being released is transported. 909836/0521 - 10 - ■ - 10 - 17. The device according to claim 16, characterized in that the device that the film of exposing the image forming heat to a heated metallic block member (63) having a flat surface movably attached and is of such a size that optionally the surface first passes through the plate opening (102) detecting an image area of the image card held on the panel structure (67) and means which develops a negative pressure in a space formed by the picture card, the block member (63) and the edges the panel opening (102), thereby bringing the image card into close contact with the surface at the image area of the block element (63) to pull. 18. The device according to claim 2, characterized in that the imaging device (130, 131) has a plurality of selectable focal lengths, that a device is provided which is coupled to the imaging device (130, 131) in order to always have a specific focal length select when the second optical path is formed _; and in that means are provided under the control of the operator for selecting any focal length for use during the recording cycle. 19. The device according to claim 1, characterized in that the device applying the charge a corona discharge generating element (125) which is mounted in a corona housing (61) that the Housing (61) has a first opening through which a corona discharge passes when the corona element (125) is energized is supplied that a contact area (120) is provided on the outside of the housing (61), which is connected to the first Opening closes and lies in a common plane that the housing (61) has a second opening (121) which - 11 - 909836/0521 the first opening is arranged opposite that the housing (61) is held above the image plane (52) in such a way that the first optical path goes through the openings in the housing (61), that a plate construction (67) with an opening (102) which essentially corresponds to a single image area, is provided, which is arranged so that it carries at least a portion of an image card, that a device is provided which is the corona housing (61) along the first optical path from a first one of the plate structure (67) moved raised position into a second position in which the contact area (120) against an image card on the Plate structure (67) is pressed to clamp the picture card against the plate structure, whereby the contact area (120) is arranged in such a way that it grips the plate structure (67) close to the edges of the opening (102), and that the device moving the housing is controlled so that it releases the picture card only during the time during which the picture card is transported step by step. 20. The device according to claim 19, characterized in that the device that the film of the Image-forming heat exposes a heated metallic block element (63) with a flat surface that is movable and is of such a size that, optionally, the surface first passes through the panel opening (102) detecting an image area of an image card held on the panel structure (67) and means which develops a negative pressure in a space which is caused by the picture card, the block element (63) and the edges of the Plate opening (102) is limited, thereby the image card at the image area in close contact with the surface of the Block element (63) to pull. 21. The device according to claim 20, characterized in that the block element (63) with an axial Bore (85) is provided, which is only partially through the element (63) - 12 - 909836/0521 from the bottom up that a pin-shaped Element (81) is provided that is located in the bore (85) and has a free upper end on which the Block element (63) usually sits under the influence of its own weight that a device is provided which holds the pin-shaped element (81) movably at its lower end in order to move the block element (63) out of alignment and in to move an alignment to the plate opening (102), and that at least one lateral passage (86, 87) is provided, the upper end of the bore (85) in the block element (63) with the outside of the block element (63) in one place connects in the volume in which the negative pressure is built up, so that a downward movement of the pin-shaped element (81) opens the otherwise closed passage to the outside air so that the negative pressure collapses and the block element (63) is released from the picture card and panel structure (67). 22. The device according to claim 19, characterized in that the optionally actuatable device rotatably mounted mirror means (58) which in one position complete the first optical path and the second excludes optical path and which in a second position completes the second optical path and the first optical Path excludes an electrical switching device (65) which is under the control of the mirror device (58), and a device which connects the switching device (65) to the projection light source (54) to only then to be supplied with energy when the mirror device (58) assumes the second position. 23. The device according to claim 1, characterized in that an optical surface viewing device (161) on a movable light interrupter (160) - 13 - 909836/0521 is attached / that it can be arranged on the axis of the first optical path above the imaging device, if the selectively operable device does not interrupt the first optical path, that the interrupter (160) and the Surface viewer (161) during the recording cycle and whenever the second optical path is formed are withdrawn that the surface viewing device (161) for the presence of an exposed image in the The image area of the image card responds and develops a signal, and that a device is provided which responds to the signal responds to warn an operator not to take any further action. 24. The device according to claim 23, characterized in that the optical surface view direction (161) to a different from the flat surface Responds to deformation developed in the exposed image when the image area of the image map forms the image Exposure to heat. 25. The device according to claim 1, characterized that the facility under the control of the operator includes a facility that in functional connection with the device applying the charge, the heating device and the step-by-step transportable device Holding device is so that at the instigation of the operator, the optionally operable device of a first state in which it forms the second optical path is shifted to a second state in which it again forms the first optical path, whereupon the device applying the charge is activated to transfer the charge to apply for a certain period of time, which is followed by activation of the heating device for a certain period of time connects to expose the image area to the heat forming the image, the selectively actuatable device in the first state essentially simultaneously with the "" ¹⁴ 909836/0521 Activation of the heating device is performed, and upon the end of the time interval in which the film is exposed to the heat is activated, the step-by-step transportable holding device is activated to take the picture card to the next following To transport image position in a certain pattern. 26. The device according to claim 25, characterized in that a device is provided which the activation of the step-by-step transportable holding device is delayed for a certain period of time so that the Operator can control the image just formed in the image area. - 15 - 909836/05 21