SU1478185A1 - Copying apparatus - Google Patents

Abstract

The invention relates to the field of reprography, namely to copying machines that provide automatic continuous-frame and selective copying from roll microfilms having a constant and variable frame rate in a roll onto a roll of photographic film. The device contains the first tape-mechanism of the microfilm roll 1 with the first drive 6, the microfilm optical information reading unit 16, the exposure unit for exposing the microfilm frames with the curtain mechanism for changing the illumination unit light stepwise, a removable cassette with the second tape drive mechanism, the second drive 26, the first 7 and second 27 displacement sensors installed in the first and second tape drive mechanisms. A new mechanism in the apparatus is the curtain mechanism actuator 14 and the curtain mechanism actuator control circuit for measuring the pitch of each frame to be copied and changing the position of the curtain of the curtain mechanism of the illumination unit and the film drawing pitch in the cassette. 3 il.

Description

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19, the guide rollers 20, the clamping gaiter, the linear motor return-glass 21 connected to the second electromagnet 22, the pulling steam, consisting of the pulling 23 and the presser 24 rollers, and the pulling roller 23 through the split gear 25 engaged with a second actuator 26, located outside the cassette, and a second displacement sensor 27

The sensors 7 and 27 of movement are structurally made in the form of a roller with a friction elastic coating, an obturator is mounted on the axis of the roller, on each side of the plane of which the light emitter is mounted and

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progressive principle or electromagnetic mechanism

The curtain mechanism 13 is mounted on the frame 11 of the illumination unit from the receiving coil 3 and restricts the luminous flux from the illuminator 9 through the presser glass 12 in the zone from the second border of the frame frame 11 in the direction of movement of the microfilm 1. Thus, each position of the curtain of the curtain mechanism 13 corresponds to one from the cross sections of the luminous flux passing through the pressure glass 12 "The size of the luminous flux along the length

gatel, linear motor return

progressive principle or electromagnetic mechanism

The curtain mechanism 13 is mounted on the frame 11 of the illumination unit from the receiving coil 3 and restricts the luminous flux from the illuminator 9 through the presser glass 12 in the zone from the second border of the frame frame 11 in the direction of movement of the microfilm 1. Thus, each position of the curtain of the curtain mechanism 13 corresponds to one from the cross sections of the luminous flux passing through the pressure glass 12 "The size of the luminous flux along the length

The microfilm axis 1 in each of the positions of the curtain of the curtain mechanism 13 corresponds to the length of the next frame with the interframe spacing of the microfilm to be copied, i.e. step frame.

Setting the curtain of the curtain mechanism 13 to the position corresponding to the step of the next frame of microfilm 1 to be copied is driven by the control mechanism 14 of the curtain mechanism.

The first 6 and second 26 drives of the first and second tape drive mechanisms can be made of electric motors and self-braking gearboxes.

Clamping glasses 12 and 21 serve to align and bring into contact areas of microfilm 1 and unexposed film 19 in the area of exposure during exposure. Glass glasses 12 and 21 are clamped by electromagnets 15 and 220

The optical information reading unit 16 is structurally located in the path of microfilm 1 so that the distance 1 from its optical axis to the first border of the frame frame 11 in the direction of microfilm 1 does not exceed the size of microfilm frames 1 j having the minimum frame pitch, which is necessary for ensure that all frames of microfilm 1 are copied in automatic mode. In this case, the control circuit of the first drive 6 determines the boundary of the end of the next frame, moves this frame to distance 1 and sets it to ONU exposure at a specific location of the first aperture plate 11 borders.

The electronic control block diagram of the first 6, second 26 drives and the curtain mechanism drive 14 (FIG. 2) comprises an optical information reading unit 16, a first movement sensor 7, a first driver 28, trigger pulses, a first trigger 29, a first power amplifier 30, a first electric motor 31 of the first drive 6, the third trigger 32, the first counter 33, the first decoder 34, the second displacement sensor 27, the second counter 35, the second decoder 36, the second driver 37 of trigger pulses, the second trigger 38, the second amplifier 39

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TI, the second motor 40 of the second drive 26, the driver of the write pulse 41, the driver of the collection pulse 42, the fourth trigger 43, the third counter 44, the third decoder 45, the first 46 and the second 47 registers, the third power amplifier 48 and the curtain mechanism drive 14.

An optical information reading unit 16 at the first output generates a pulse when the end of each frame of microfilm passes through it. Moreover, in order to obtain a pulse, it is necessary that the interframe gap be no less than a strictly defined set value.

At the second output of the optical information reading unit 16, a pulse is generated when the beginning of the next frame of the copied microfilm passes through it.

Movement sensors 7 and 27 provide a series of pulses in which the appearance of a next pulse corresponds to the film moving over a distance determined by the measurement accuracy of sensors 7 and 27.

The first driver 28 of the triggering pulses generates a pulse to turn on the first motor 31 of the first drive 6 when the machine is turned on and each time after exposing the next frame of microfilm 1 about the first trigger 29 and the power amplifier 30 are designed to switch the first electric motor 31 of the first drive 6

The third trigger 32 allows the counting of the first pulse counter 33 from the first displacement sensor 7 each time after passing through the optical information readout section 16 of the border of the end of the next frame of microfilm 1, the measurement of the displacement of the next frame of microfilm 1 to distance 1, which is fixed by the first decoder 34, tuned to this distance, expressed by the number of pulses of the first displacement sensor 7.

The second driver 37, trigger pulses, the second trigger 38 and the second power amplifier 39 perform the same functions as the first elements, only to control the second motor 40 of the second drive 26 o

The second counter 35 and the second decoder 36 serve to measure the movement of the unexposed film 19 to the step of the next frame to be copied, therefore the second decoder 36 is made controlled by a second trigger 47 on the second input. Information about the step of the next frame

which the fourth trigger 43 overturns, the prohibition of the third counter 44 is removed from the bus, and the third counter 44 starts counting the pulses from the first displacement sensor 7 - the step of the first frame of the microfilm 1 is measured.

to be copied automatically by the counter 44 numbers corresponding to

ki records every time after measuring the step of the next frame using a circuit built on the driver

41 pulses recording shaper

42 reset pulses, fourth trigger 43, third counter 44, third decoder 45 and first register 47.

The third decoder 45 is a block of decoders, each of which is set to a binary number equal to the frame length of a certain microfilm pitch 1.

The third power amplifier is used to control the drive 14 of the curtain mechanism.

The device works as follows.

Roll-on microfilm 1 having a variable (constant) frame pitch is charged into the first tape-mechanism of the apparatus. The unexposed film 19 is loaded into the cassette, after which the cassette is inserted into the apparatus, with the docking of the split gear 25 o

Let us assume conventionally that the first step of the frame of microfilm 1 is less than the second step of the frame, and the second is less than the third step of the frame, etc., and consider the operation of the device when frames are located on microfilm I in the order shown in FIG. 3, where the first frame after the leader of microfilm 1 has the second frame step, the second frame is the first frame step, the third frame is the third frame step, etc.

After the device is put into operation, the first driver 28 triggering pulses triggers the first trigger.

29 and through the first power amplifier 30 the first motor 31 of the first drive 6 is turned on — the microfilm 1 is rewound in the path of the first tape drive mechanism. When passing the boundary of the beginning of the first frame through the optical information reading unit 16, the latter generates a pulse at the second output,

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the length of the frame of the first step, on the first output bus of the third decoder 45, a pulse appears, which is written to the first trigger of the first

15 register 46. Then, when moving the microfilm 1, the third counter 44 dials a number corresponding to the step length of the second frame, and a pulse appears on the second output bus of the third decoder 45, which is written to the first register 46. Then, when passing through the optical information reading section 16 the first interframe gap of microfilm 1 at a distance oi from the border of the end of the first frame at the first output of the optical information readout section 16, an interframe gap is generated, on the leading edge of which Only 41 write pulses rewrites information from the output tires of the first register 46 (frame pitch code) to the second register 47, according to which the third power amplifier 48 provides control signals for the curtain mechanism drive 14, the latter sets the curtain of the curtain mechanism 13 to a position where the light flux from the clarifier 9 through the pressing glass 12 is equal to the second pitch of the frame in the axial component of microfilm 1. Simultaneously, on the leading edge of the interframe pulse, the third trigger 32 tilts from the tires. Resetting the first counter 33 disables the count, and the latter starts counting the pulses from the first displacement sensor 7, the measurement of the displacement of the end border of the first frame of microfilm 1 from the optical reading unit 16 begins information to the first border of the personnel window 11 of the illumination node - measurement of the distance 1 "

Over a predetermined pulse edge of the interframe gap, the reset pulse generator 42 generates a pulse, which is transmitted in 35

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the length of the frame of the first step, on the first output bus of the third decoder 45, a pulse appears, which is written to the first trigger of the first

5 register 46. Then, when moving the microfilm 1, the third counter 44 dials a number corresponding to the step length of the second frame, and a pulse appears on the second output bus of the third decoder 45, which is written to the first register 46. Then, when passing through the optical information reading section 16 the first interframe gap of microfilm 1 at a distance oi from the border of the end of the first frame at the first output of the optical information reading section 16, an interframe gap pulse is formed, on the leading edge of which Only 41 write pulses rewrites information from the output tires of the first register 46 (frame pitch code) to the second register 47, according to which the third power amplifier 48 provides control signals for the curtain mechanism drive 14, the latter sets the curtain of the curtain mechanism 13 to a position where the light flux from the clarifier 9 through the pressing glass 12 is equal to the second pitch of the frame in the axial component of microfilm 1. Simultaneously, on the leading edge of the interframe pulse, the third trigger 32 tilts from the tires. Resetting the first counter 33 disables the count, and the latter starts counting the pulses from the first movement sensor 7, the measurement of the movement of the end border of the first frame of microfilm 1 from the optical reading unit 16 begins information to the first border of the personnel window 11 of the illumination node - measurement of the distance 1 "

Over a predetermined pulse edge of the interframe gap, the reset pulse generator 42 generates a pulse, which is driven by

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the fourth state of the flip-flop 43 and the third counter 44 and the first register 46 are zeroed

Further, when the microfilm 1 is moved and when the optical information boundary of the beginning of the second frame passes through the optical information reading unit 16, the measurement circuit for the step of the second frame of microfilm 1 is started up in the same way as described.

When the end of the first microfilm frame is moved to distance 1, the first decoder 34 is triggered, which returns the first 29 and third 32 triggers, the first electric motor 31 of the first drive is de-energized — the first frame of microfilm 1 is delivered to the exposure zone of the device for illumination of the apparatus, this in the third counter 44 is recorded the number corresponding to the measured length of the second frame of microfilm 1 before stopping before the exposure of the first frame.

Then, using electromagnets 15 and 22, clamping and leveling sections of microfilm 1 and unexposed film 19 in the area of exposure are performed, the illuminator 9 is switched on for the time specified by the time relay (not shown in Fig. 2) - the first frame of microfilm is copied 1, having a second frame step „

After exposure, the first driver 28 starts the control circuit of the first drive, which operates as described, and the frame pitch measurement circuit continues measuring the length of the second frame of microfilm 1 "

Simultaneously with the first, the second triggering driver 37 tilts the second trigger 38, which activates the second electric motor 40 through the second power amplifier 39, the second counter starts counting pulses from the second displacement sensor 27. After measuring the length of the second frame of microfilm 1 having the first step frame, the frame pitch measurement circuit writes to the second register 47

the code of the first step of the frame, according to which the drive 14 of the curtain mechanism through the third amplifier

48 power sets the shutter curtain mechanism 13 node light in the appropriate position.

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At the same time, the frame step code from the output of the second register 47 enters the second input of the second decoder 36 and adjusts it to the number corresponding to the first frame step. Therefore, after moving the unexposed film J9 by an amount equal to the first frame step, the second counter 35 dials this number and the second decoder 36 generates a pulse, which the second trigger 38 returns to its initial state, which in turn zeroes the second counter 35 and through the second power amplifier 39, the second motor 40 of the second drive is turned off. In this case, the unexposed film 19 is moved by the amount of the first frame step, which the second frame of microfilm 1 has to be copied

Then, exposure of the second frame of microfilm 1 is carried out, and further the operation cycles of the apparatus are repeated, while on film 19 in the cassette a constant interframe interval is maintained regardless of the length of the copied frames.

FIG. 3 denotes signals A from the output of the first driver 28 trigger pulses, signals B from the output of the first trigger 29, signals C from the first displacement sensor 7, signals G from the first output of the optical information reading section 16, signals D from the output of the third trigger 32, signals E c the output of the first decoder 34, the signals M from the output of the imaging unit 41 write pulses, the signals 3 from the output of the imaging unit 42 reset pulses, the signals And from the second output of the node 16 reading optical information, the signals K from the output of the fourth trigger 43, the signals L, M, N with output the bottom bus of the first register 46, the signal O from the output of the second driver 37 of trigger pulses, the signals P from the output of the second trigger 38, the signals P from the second displacement sensor 27 and the signals C from the output of the second decoder 36 "

Claims (1)

Invention Formula A copier containing a first tape drive mechanism with a first drive, a microfilm optical information reading unit, a flare unit, a drive-driven curtain mechanism, a removable cassette with a second tape drive mechanism and a second drive, the first and second motion sensors, the first drive control device containing the first driver of pulse-Q microfilms having variable .sov, the first trigger, the first power amplifier, the third trigger, the first counter and the decoder, the output of the first driver trigger generator connected to the first input of the first trigger, the output of which is connected to the input of the first power amplifier, the first input of the third trigger connected to the first the output of the reading unit of optical information 20 from microfilm, the output of the third trigger is connected to the bus. Resetting the first counter, the counting input of which is connected to the first motion sensor, the output of the first 25 counter is connected to the input the first decoder, the output of which is connected to the second inputs of the first and third flip-flops, the control circuit of the second drive containing the second driver trigger generator, the second trigger, the second power amplifier, the second counter and the decoder, and. the output of the second triggering pulse generator is connected to the first input of the second trigger, the output of which is connected to the input of the second power amplifier, the counting input of the second counter is connected to the second displacement sensor, the bus Reset the second counter to the output of the second trigger connected to the first input of the second descaling frame in a roll, the curtain mechanism drive and the curtain mechanism control circuit are inserted into the apparatus, containing the recording and reset pulses, fourth trigger, tr There is a counter, a third decoder, the first and second registers, the third power amplifier, and the input of the write pulse and reset pulses are connected to the first. the output of the optical information reading unit, the output of the reset pulse generator is connected to the buses. Resetting the fourth trigger and the first register; the output of the write pulse generator is connected to the sync input of the second register; Three heras are connected to the bus. The third counter is reset, the sync input is connected to the output of the first displacement sensor and the information input of the first counter, and the output of the third counter is nen with devshfratora third input, the output of which is connected to the data input of the first register, the output of the connections with a data input sec th register whose output is connected to a second input of the second decoder and to the input of the third amplifier moshnos and the output of the second decoder is connected to the second input of the second trigger, characterized in that, in order to extend the functionality by providing an automatic selective and continuous-frame copy mode according to an arbitrary program with frame pitch in a roll, a curtain mechanism drive and a curtain mechanism control circuit are included in the apparatus, containing write pulse shunt and reset pulse shapers, fourth trigger, third counter, third decoder, first and second registers, third power amplifier, and the write pulse shaper and pulse inputs reset is connected to the first output of the optical information reading unit; the output of the reset pulse generator is connected to the buses. The reset of the fourth trigger and the first register, the output of the pulse former for the record is connected to the synchronization input of the second register; the installation input of the fourth trigger is connected to the second output of the optical information reading unit; the output of the fourth trigger is connected to the bus. Resetting the third counter, the synchronization input of which is connected to the output of the first displacement sensor and the information input of the first counter, and the third the counter is connected to the input of the third devshfrator, the output of which is connected to the information input of the first register, the output of which is connected to the information input of the second D gistra, the output of which is connected to the second input of the second decoder and to the input of the third power amplifier. FIG. 2