US3741651A

US3741651A - Recording device

Info

Publication number: US3741651A
Application number: US00188354A
Authority: US
Inventors: A Nishiyama; Y Takashima; T Noguchi; Y Izura; M Tanaka
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1970-10-15
Filing date: 1971-10-12
Publication date: 1973-06-26
Anticipated expiration: 1990-06-26
Also published as: FR2112297B1; AU3456871A; DE2151524C3; AU451258B2; FR2112297A1; GB1365945A; DE2151524A1; DE2151524B2; CA987941A; NL7114161A

Abstract

A desired TV image displayed on a cathode-ray tube is transferred onto a recording paper which is placed in close contact with the faceplate of the tube, and the transferred image is then developed by a developing device. While the preceding exposed recording paper is being developed, the succeeding exposed recording paper is stored so that the problem that the developing time is slower than the exposure or image transfer time is overcome. Therefore, desired TV images may be recorded in a very small time interval.

Description

United States Patent [191 Nishiyama et al.

RECORDING DEVICE Inventors: Akira Nishiyama, Neyagawa;

Yoshiteru Izura, Toyonaka; MasaakiTanaka; Yuji Takashima, both of Osaka; Toyota Noguchi, Tokyo, all ofJapan Assignee:

Matsushita Electric Industrial Co.,

Ltd. Osaka-fu, J apan Filed:

Oct. 12, 1971 Appl. No.: 188,354 I Foreign Application Priority Data Oct. 15, 1970 Japan 45/91268 Oct. 15, 1970 Japan..... 45/91269 Oct. 15, 1970 Japan 45/91270 Oct. 15, 1970 Japan 45/91271 Oct. 15, 1970 Japan..... 45/91272 Mar. 30, 1971 Japan 46/19350 U.S. CI 355/100, 95/89 R, 219/216,

Int. Cl. G031) 27/30 Field of Search... 355/99, 100, 20,

[ June 26, 1973 [56] References Cited UNITED STATES PATENTS 3,629,549 12/1971 Svendsen 219/216 3,557,675 1/1971 K011 et a1. 355/28 X 3,452,627 7/1969 Goodman et a1. 355/28 X 3,502,407 3/1970 Granzow et a] 355/12 X 3,558,802 1/1971 Stein et a1... 355/20 X 3,012,141 12/1961 Thomiszer 355/106 X FOREIGN PATENTS OR APPLICATIONS 376,669 7/1932 Great Britain 355/99 1,353,611 1/1964 France 915,337 1/1963 Great Britain 355/100 Primary ExaminerRichard L. Moses Attorney-Milton J. Wayne et a1.

[57] ABSTRACT A desired TV image displayed on a cathode-ray tube is transferred onto a recording paper which is placed in close contact with the faceplate of the tube, and the transferred image is then developed by a developing device. While the preceding exposed recording paper is being developed, the succeeding exposed recording paper is stored so that the problem that the developing time is lower than the exposure or image transfer time is overcome. Therefore, desired TV images may be recorded in a very small time interval.

6 Claims, 13 Drawing Figures PATENTEDJUNZB I975 3.741. 651

SHEET! or 8 .0. FIG. I

IIO

I09 ANTENNA I08 I INTERMEDIATE FM LOW LFREQUENCY DETECTOR .Z IIEI IE IETE R AMPLIFIER I03 I04 ;rr "*v' IFREQUGENCY -FREQUENCY I AMPLIFIER CONVERTER I l I I05. I06 '9 INTERMEDIATE IMAGE I H2 I FREQUENCY ADETECTOR.

3 I27 SYNCHRONIZING 7 DC F y L SEPARATE LREGENERATIVE m CIRCUIT I CIRCUIT g3 8 VERTICAL H4 5E -DEFLECTION J z CIRCUIT 1 5 v U HORIZONTAL HIGH DEFLECTION VOLTAGE CIRCUIT RECTIFIER SHUTTER l I I3 CRCUIT [CONTROL CIRCUIT I29 I28 I30 s s COUNTER M I lmglcl gl? COUNTER CONTROL CIRCUIT PAIENIEmuuze 1915 3. 741; 651

SHEEI 2 BF 8 PATENTEDJUNZG ms 3341.651 sum 3 or a FIG. 3 I

o RADIATOR 'CUNDENSER 0 1 3 2Ol o 0 V 0 v 204 I] 2 TRANSFURMER I L o! PAIENIElMuuzs ma 3.741.651 SHEEI 8 0f 8 TO .CLUTCH 7 IN PUT BACKGROUND OF THE INVENTION The present invention relates to a device for recording a desired TV image.

There has been proposed a method for recording a desired TV image by a camera using a film. Since the desired TV images to be recorded are displayed randomly, it is extremely difficult to set the camera in such a manner that a desired TV image that is instantaneously displayed is recorded only by depressing the shutter button.

In a recording method in which a photosensitive recording paper is placed in contact with the faceplate of a cathode-ray tube to transfer the TV image displayed on the faceplate thereof onto the recording paper, the image transfer time or exposure time is shorter than the developing time, but it is frequently desired to reproduce the desired TV images successively in a short time interval. Therefore the recording devices of the type described must be so arranged as to overcome these problems.

SUMMARY OF THE INVENTION One of the objects of the present invention is therefore to provide a device capable of recording or reproducing a desired TV image in a simple manner.

A second object of the present invention is to provide I a device capable of successively recording or reproducing desired TV images in a shorter time interval so that loop best suited for accomplishing the above second object of the present invention.

A fourth object of the present invention is to provide a magazine best suited for storage of the recording paper.

A fifth object of the present invention is to provide a pressure plate best suited for placing the recording paper into good contact with the faceplate of a cathode-ray-tube.

A sixth object of the present invention is to provide a cutter device best suited for cutting a recording paper into a predetermined size.

A seventh object of the present invention is to provide a developing means best suited for carrying out the thermal developing process.

- are similar to those in a conventional television re-- Briefly stated, according to the present invention I of the developing device, the succeeding recording. .paper is fed into the developing device. The transportation of the recording paper in the recording device in the manner described is controlled by the combination of relays in an electric circuit for actuating the recording paper transportation means for detecting whether the recording paper is present in the inlet of the developing device or not.

The above and other objects, features and advantages of the present invention will become more apparent from the following description of one preferred embodiment thereof taken in conjunction with the accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a recording device in accordance with the present invention;

FIG. 2 is a perspective view illustrating the mechanical components thereof;

FIG. 3 is a side view thereof with a side wall removed;

FIGS. 4A and 4B are left side and top views thereof;

FIG. 5 is a schematic perspective view illustrating a recording paper transportation mechanism thereof;

FIG. 6 is a perspective view of a recording paper magazine;

FIG. 7 is a perspective view of a pressure plate for placing the recording paper in good contact with the faceplate of a cathode-ray tube in the recording device;

FIG. 8 is a perspective view of a cutter device;

FIG. 9 is a perspective view, partly in section of a thermal developing device;

FIG. 10 is a circuit diagram of a control circuit for stopping the operation of the recording device when the recording paper in the magazine is consumed;

FIG. 11 is a circuit diagram of a control circuit for controlling the recording paper transportation mechanism or pairs of recording paper feed rollers; and

FIG. 12 is a circuit diagram of a temperature controller for the thermal developing device.

DESCRIPTION OF THE PREFERRED EMBODIMENT:

Referring to FIG. 1, the circuit components 101-118 ceiver, that is they are an antenna 101, a tuner 102 consisting of a high-frequency amplifier 103 and a frequency converter 104, an intermediate frequency amplifier 105, a detector 106, an image amplifier 107, a horizontal and vertical deflecting coil 118, a picture tube 112, an intermediate frequency amplifier 108, an FM detector.109, a low frequency amplifier 110, a loudspeaker 111, a DC restorer 117, a synchronizing separate circuit or sync separator 113, a vertical deflection or sweep circuit 114, a horizontal deflection or sweep circuit 115, and a high voltage rectifier 116. Some of these circuit components described above are also used to drive a cathode-ray tube 132 for printing connected in parallel with the picture tube 112 and to circuit components 119-131, that is vertical and horizontal deflecting coils 119, a shutter circuit 120 for determining a time interval during which a received TV image is displayed on the cathode-ray tube 132, a pressure plate 121 for placing a'recording paper 124 into good contact with the faceplate of the cathode-ray tube 132, a magazine 123 of recording paper, a thermal developer 125 with the recording paper thermally developed being indicated by 126, a temperature control circuit 127 which compares a preset temperature of the thermal developer 125 with that of a temperature detector 133 comprising for example a ceramic thermistor or the like and maintains the preset temperature, the temperature controller 127 also having the function of preventing the shutter circuit 120 from being actuated before the temperature of the thermal developer 125 reaches the predetermined temperature, a number indicator 129 for displaying the output of a counter 128, that is a number of available frames of the recording paper 124 in the magazine cartridge 123, a counter control circuit 130 for controlling a cutter device 122, and a shutter switch 131.

A control circuit 134 is provided to detect if there remains a sufficient length of recording paper 124 to be pressed against the faceplate of the cathode-ray tube 132 by meansof a photosensor 135 and to control the shutter circuit 120 in response to the result of detectron.

Next the mode of operation will be described, but the functions of the circuit components 101-118 are similar to those of the conventional TV receiver so that their detailed explanation will not be made in this specification. First as far as the shutter switch 131 is not depressed or closed, the shutter circuit 120 is not actuated so that no printing operation is carried out. When a desired image is displayed on the picture tube 112, the shutter switch 131 is depressed so that the shutter circuit 120 is actuated. As a consequence, the image displayed on the picture tube 112 is also displayed on the cathode-ray tube 132 for one frame time interval, that is one-thirtieth second according to the television standards in Japan, and is transferred onto the recording paper 124. A predetermined time after the image is transferred from the cathode-ray tube 132 to the recording paper 124, the latter is advanced a length slightly greater than the height of the faceplate of the cathode-ray tube 132, and is automatically cut into a predetermined length by the cutter device 122. The cutout recording paper 124 is next developed by the thermal developer 125.

The optical efficiency may be increased and a picture with a high resolution may be obtained when a fiber faceplate tube which will be referred to as FFT hereinafter and whose faceplate comprises a great number of optical fibers is used for the cathode-ray tube 132 for printing. Especially when a newly developed 1.5 or 2.5 inch FFT is used, a recording paper with a smaller width may be used and the resolution of the image transferred onto the recording paper may be much improved.

The transfer of a desired image from the cathode-ray tube 132 to the recording paper 124 takes about onethirtieth second as described previously, but the development takes about 15 seconds in the recording device in accordance with the present invention so that the thermal developer 125 cannot successfully develop the recording papers 124 successively exposed on the faceplate of the cathode-ray tube 132 and advanced to the thermal developer 125. Therefore the exposed recording papers 124 must be temporarily stored until they are developed. A temporary storage device for this purpose will be described in more detail hereinafter.

Next referring to FIG. 2 illustrating a perspective view of the recording device in accordance with the present invention and to FIG. 5 illustrating the path of the recording paper 124, the mode of operation will be described in more detail hereinafter. When the shutter switch 131 (see FIG. 1) is depressed and there is no recording paper 226 between two pairs of

feed rollers

212 and 214, the recording paper 226 in contact with the faceplate of the cathode-ray tube 201 is exposed to form a latent image. In this case, aclutch 203 is almost simultaneously actuated to permit the rotation of a roller 204 so that the recording paper 226 is advanced a length almost equal to the height of the faceplate of the cathode-ray tube 201. The rollers 212 are also rotated in unison with the feed rollers 204. As the pair of feed rollers 204 rotate, a cam 206 is carried by the shaft of one of the feed rollers 204 rotates to actuate a microswitch 208 after the recording paper 226 has been advanced by one frame so that in response to the output of the microswitch 208 the cutter device 210 is actuated to cut the recording paper 226 into a predetermined length. However, it should be noted that when the recording paper 226 is held between the pair of feed rollers 214, the cutter device is not actuated. Upon completion of the operation of the cutter device 210, a microswitch 227 is actuated by an arm 228 so that a clutch 217 is actuated to rotate the pair of feed rollers 212 until the recording paper 226 passes over the pair of feed rollers 212. In this case the pair of feed rollers 214 and a developer drum 219 are normally rotated by a motor (not shown) through a chain drive 220 so that the recording paper 226 is fed into the space between the developer drum 219 and the pressure plate 221 from the pair of feed rollers 214. To ensure the proper passage of the recording paper in the recording device, there are provided

guides

223, 216, 218 and 224.

When the recording paper 226 has passed beyond the pair of feed rollers 212, the shutter switch 131 (see FIG. 1) is reset. When the shutter switch 131 is depressed again, the recording paper 226 is again advanced in the manner similar to that described. In this case, the pair of feed rollers 212 are retarded by a brake device 213 so that the idle rotation of the pair of feed rollers 212 due to the recording paper 226 being advanced may be prevented during the time when the recording paper 226 is still held in the nip between the pair of feed rollers 214. Furthermore, the pair of feed rollers 214 are so arranged that the cutter device 210 is not actuated when the recording paper is still held in the nip between the pair of feed rollers 214, and the rotation of the feed rollers 212 is prevented even when the first pair of feed rollers 204 are rotated. Therefore, upon depression of the shutter switch 131, the first pair of feed rollers 204 are rotated to advance the recording paper 226 step by step, but the second pair of feed rollers 212 are not rotated so that as long as the recording I paper 226 is held by the nip between the third feed rollers 214, the recording paper 226 being advanced is bowed or stored as shown in FIG. 5. Whether the recording paper 226 is held by or passed through the nips between the second and third pairs of

feed rollers

212 and 214 or not is detected by means of

microswitches

211 and 215.

Next the recording paper slack loop mechanism will be described in more detail. A recording paper guide 229 is swingably fixed to a sidewall 209 with a hinge (not shown) and is suspended freely when the recording paper 226 is advanced straightly or without being bowed. But when the recording paper 226 is bowed as shown in FIG. 5 in the manner described hereinbefore, the guide 229 is raised by the recording paper 226 as shown in FIG. 5. Therefore, the recording paper 226 may be. stoned or bowed. The function of the

guides

224 and 230 is similar to that of the guide 229. When there is provided a detector-indicator (not shown) capable of detecting and indicating the length of the recording paper .226 stoned or bowed, the temporary storage of the recording paper 226 beyond a predetermined capacity of the recording device may be prevented.

In summary, the shutter switch 131 is inoperative when one of the first and second pairs of feed rollers 204 and 2.12 and the cutter devices 210 is actuated. Except for this case, the shutter switch 131 is automatically set to be depressed unless the recording paper 226 is completely consumed in the recording device. When there is no recording paper held by or passing through the nips of the second and third pairs of

feed rollers

212 and 214 when the shutter switch 131 is depressed, both of the first and second pairs of

feed rollers

204 and 212 are rotated to advance the recording paper 226 and then the cutting device 210 is actuated to cut the recording paper 226 into a predetermined length. The third pair of feed rollers 214 continue their rotation until the recording paper 226 has passed beyond them. When upon depression of the switch 131 there is the recording paper 226 held by the nip of the second pair of feed rollers 212, the first and third pairs of

feed rollers

204 and 214 are rotated if there is no recording paper 226 held by the nip between the third pair of feed rollers 214, and the cutter device 210 is actuated only after when the recording paper 226 has passed the third pair of feed rollers 214. However, when there is the recording paper 226 held by the nips between the second and third pairs of

feed rollers

212 and 214, only the first pair of feed rollers 204 are rotated and the cutter device 210 is actuated and the third pair of feed rollers 214 are rotated only when the recording paper 226 has passed the second pair of feed rollers 212.

Next the recording paper magazine will be described in detail by reference to FIG. 6. The photosensitive surface of the recording paper is applied with a thin film of resin or chemical compound so that it is easily subjected to deterioration when the humidity exceeds a certain level. Therefore, the'recording paper must be stored in a dried magazine or the like. According to the present invention, this problem is overcomed by the novel arrangement in which a hollow recording paper spool 232 disposed ina black or light-tight box 205 is perforated or made of a porous material, and is packed with a desiccating or drying agent such as silica gel. Therefore, the recording paper magazine may be designed compact in size and convenient to replace the drying agent.

Various adjustments such as the spot adjustment of the FFT 201 are required to attain and maintain the highest possible resolution, but it is very inconvenient and troublesome to remove the accessories which must be disposed in front of the faceplate of the FFT 201. To overcome this problem, the present invention provides the recording paper pressure plate 202 which places the recording paper 226 into close contact with the faceplate of the F FT 201 and is fixed to the side plate 209 with a hinge 233 so that the'pressure plate 202 may be easily opened away from the faceplate of the FFT 201 when required. The pressure plate 202 may be easily held-in position by means of a pair of locking

members

234 and 234a. The pressure plate 202 in this embodiment is shown as comprising a pair of

plates

202a and 202!) spaced apart from each other by means of elastic elements 202c made of phosphor bronze.

Next the cutter device 122 in FIG. 1, and 210 in FIGS. 2 and 5 will be described. In the instant embodiment, the cutter device is of a plug-in type and is placed in the position indicated by 225 in FIG. 2. Referring to FIG. 8, a cutter 603 is rotatably interposed between a pair of

side walls

601 and 602, and the recording paper 226 is passed between the rotary cutter knife 603 and a stationary cutter knife 604, and is cut into a predetermined length when the rotary cutter knife 603 rotates. The position of the fixed cutter knife 604 may be adjusted by an adjusting screw 605. Since the cutter device is a plug-in type unit, it may be readily replaced so that the maintenance and repair of the recording device may be much facilitated.

Next will be described in more detail the thermal developer by reference to FIG. 9. In the instant embodiment, a thermal developing process is employed, so that the developer drum 701 has its peripheral surface coated with a silicon resin layer 702. Alternatively a silicon resin tube may be fitted over the developer drum 701. The heater-pressure plate 706 arcuate in cross section is disposed around the drum 701 in spaced apart relation therewith, and comprises an inner layer made of polyfluoroethylene an outer heater layer 705 and a steel plate 704 interposed between the inner and

outer layers

703 and 705. The heat is directly applied from the polyfluoroethylene layer 703 so that the photosensitive layer of the recording paper is in direct contact with the polyfluoroethylene layer. Therefore, in order to prevent the photosensitive layer from being damaged, the inner layer 703 must be made of a good heat resistant substance whose coefficient of friction is small and which will not adhere or stick to the recording paper. Therefore, in the instant embodiment, polyfluoroethylene is employed. The outer layer of the drum 701 must be made of a substance (in the instant embodiment a silicon resin) having a greater coefficient of friction because the recording paper should not stick to the drum and a good heat-resistivity to withstand the heat applied from the inner layer 703. In summary, the heater-pressure plate 706 presses the recording paper 226 against the drum 701 to heat the recording paper and move it relative to the heater-pressure plate 706 without causing any surface flaws of the recording paper.

Next the control circuit 134 in FIG. 1 will be described in detail by reference to FIG. 10. The control circuit comprises a terminal 901 to be connected to a power source, a relay driving coil 902, a photoelectric element 903 which is shown as the photosensor 135 in FIG. 1 and a transistor 904. A light source which emits the light in wavelength to which the photosensitive layer of the recording paper is insensitive is disposed on one side of the path of the recording paper so that the emitted light may be intercepted by the photoelectric element 903 when there is no recording paper in the path. However, when there remains the recording paper in the magazine 123, the light from the light source is not intercepted by the photoelectric element 903 so that the element 903 is non-conductive. As a consequence the transistor 904 is also non-conductive. However, when the recording paper in the magazine is consumed, the light from the light source is intercepted by the photoelectric element 903 so that the latter becomes conductive. As a consequence the transistor 904 also becomes conductive to flow the current through the relay coil 902. The relay is so connected that when it is energized it de-energizes the shutter circuit even when the shutter switch 131 is depressed. Therefore erratic operation may be prevented when there is no recording paper in the recording paper magazine.

A circuit shown in FIG. 11 is provided to permit one rotation of the first feed rollers 204 (see FIG. 2) and then to stop them, and comprises a switch 911 which is shown as the microswitch 208 in FIG. 2, a charging capacitor 912, a charging and discharging resistor 913, switching

transistors

914 and 915, a coil 916 for a relay, a pair of

terminals

917 and 918 for connection with the power source, a normally closed contact 919 of the relay coil 916, a relay coil 920 having a pair of

contacts

920a and 920b, an input terminal 941 to which is applied a pulse for starting the rotation of the first pair of feed rollers 204, and a terminal 942 for connection with the clutch 217 (see FIG. 2).

Next the mode of operation of the control circuit shown in FIG. 11 will be described.

The detail of the temperature controller shown by 127 in FIG. 1 is illustrated in FIG. 12. The controller 127 comprises a pair of

terminals

921 and 922 to which are applied the AC of commercial frequency, diode rectifiers 923-926, a constant voltage diode 927, a detector 928 which is shown as the temperature sensor or detector 133 in FIG. 1, a field-effect transistor 929, a coupling transistor 930 for triggering a triac 931, and a heater 932 for the developer. The gate potential of the FET 929 is controlled in response to the internal resistance of the detector 928, and in response to the switching operation of the FET 929 the triac 931 is triggered through the coupling transformer 930 so that the conduction or phase angle of the current or voltage to be applied to the heater 932 is controlled. Therefore, the power in proportion to a preset temperature of the thermal developing device may be supplied thereto, and the preset temperature is maintained.

In the instant embodiment, it has been described that the latent image is formed on the recording paper and is developed by the thermal developing process into a visible image, but it is understood that an electrostatic photographic process may also be utalized by the recording device in accordance with the present invention when a pin tube is used as the cathode-ray tube for printing and a recording paper adapted for electrostatic photography is used.

What is claimed is:

1. A recording device comprising a cathode-ray tube having a faceplate on which an image on one frame is displayed;

a recording paper which is placed in contact with the faceplate of said cathode-ray tube for transfer of the image thereon;

a first recording paper transportation means for intermittently transporting the recording paper from a recording paper magazine after the one frame of image displayed upon said faceplate of said cathode-ray tube has been transferred upon the recording paper;

a developing means for developing the image transferred onto the recording paper;

a second recording paper transportation means for transporting the recording paper from said cathode-ray tube into said developing means, said second transportation means having a store means for providing a loop of recording paper on an inlet side;

means being adapted not to be driven when the recording paper is held in said second recording paper transportation means, but adapted to be driven when there is no recording paper in said second recording paper transportation means;

a cutter means disposed between said third recording paper transportation means and said cathode-ray tube and adapted to cut the recording paper into a predetermined length when the recording paper has passed said second recording paper transportation means after said first recording paper transportation means has transported the recording pa- P a shutter switch which is inoperative when said first and third recording paper transportation means and said cutter means are actuated, but is operative upon completion of operation thereof; and

a shutter circuit for causing said cathode-ray tube to display one frame of image in response to the actuation of said shutter switch;

said store means comprising flat plate means whose ends are securely fixed to side plates on one side of the passage of the recording paper, and whose upper ends are rotatably fixed to said side plates in parallel with said flat plate means on the other side of said recording paper passage, said flat plate means being rotated by the deflection of the recording paper to define a space into which the recording is looped.

2. A recording device as set forth in claim 1 wherein said recording paper magazine comprises a casing a third recording paper transportation means for within which a hollow spool which is perforated is provided and is packed with a drying agent and over which is wound the recording paper.

3. A recording device as set forth in claim 1 wherein said cathode-ray tube is provided with a pressure plate which is swingably fixed and is adapted to press the recording paper into close contact with the faceplate of said cathode-ray tube.

4. A recording device as set forth in claim 3 wherein said pressure plate comprises a first plate whose one side edge is hinged to the body of the recording device and whose the other side edge opposing said one side edge is provided with locking means which engages with mating locking means on the body of the recording device so as to retain said first plate in stationary position, and

a second plate resiliently supported by said first plate and adapted to press the recording paper against the faceplate of said cathode-ray tube.

5. A recording device as set forth in claim 1 wherein said cutter means comprises a stationary member which carries a fixed cutter knife and a movable cutter knife which makes an arcuate motion and which is removably placed into a space provided in the recording device in plug-in manner.

6. A recording device comprising a cathode-ray tube having a faceplate on which an image on one frame is displayed;

transferring means feeding unrecorded recording paper onto said faceplate intermittently from a recording paper container after the completion of transferring one frame of the image displayed;

means for thermally developing said image on said recording paper, said supporting plate comprising a metal plate having a polyfluoroethylene layer to be contacted with said recording paper, a heater layer covering said metal plate; and

a feeding means for feeding said recording paper into said developing means.

Claims

1. A recording device comprising a cathode-ray tube having a faceplate on which an image on one frame is displayed; a recording paper which is placed in contact with the faceplate of said cathode-ray tube for transfer of the image thereon; a first recording paper transportation means for intermittently transporting the recording paper from a recording paper magazine after the one frame of image displayed upon said faceplate of said cathode-ray tube has been transferred upon the recording paper; a developing means for developing the image transferred onto the recording paper; a second recording paper transportation means for transporting the recording paper from said cathode-ray tube into said developing means, said second transportation means having a store means for providing a loop of recording paper on an inlet side; a third recording paper transportation means for transporting the recording paper from said cathode-ray tube into said second recording paper transportation means, said third transportation means being adapted not to be driven when the recording paper is held in said second recording paper transportation means, but adapted to be driven when there is no recording paper in said second recording paper transportation means; a cutter means disposed between said third recording paper transportation means and said cathode-ray tube and adapted to cut the recording paper into a predetermined length when the recording paper has passed said second recording paper transportation means after said first recording paper transportation means has transported the recording paper; a shutter switch which is inoperative when said first and third recording paper transportation means and said cutter means are actuated, but is operative upon completion of operation thereof; and a shutter circuit for causing said cathode-ray tube to display one frame of image in response to the actuation of said shutter switch; said store means comprising flat plate means whose ends are securely fixed to side plates on one side of the passage of the recording paper, and whose upper ends are rotatably fixed to said side plates in parallel with said flat plate means on the other side of said recording paper passage, said flat plate means being rotated by the deflection of the recording paper to define a space into which the recording is looped.

2. A recording device as set forth in claim 1 wherein said recording paper magazine comprises a casing within which a hollow spool which is perforated is provided and is packed with a drying agent and over which is wound the recording paper.

4. A recording device as set forth in claim 3 wherein said pressure plate comprises a first plate whose one side edge is hinged to the body of the recording device and whose the other side edge opposing said one side edge is provided with locking means which engages with mating locking means on the body of the recording device so as to retain said first plate in stationary position, and a second plate resiliently supported by said first plate and adapted to press the recording paper against the faceplate of said cathode-ray tube.

6. A recording device comprising a cathode-ray tube having a faceplate on which an image on one frame is displayed; a recording paper which is placed in contact with the faceplate of said cathode-ray tube for transfer of the image thereon; transferring means feeding unrecorded recording paper onto said faceplate intermittently from a recording paper container after the completion of transferring one frame of the image displayed; a cutter which cuts said recording paper on which said image is formed; a developing device composed of a drum said drum being coated with a silicon resin layer, to be rotated, a supporting plate having a circular cross-section covering a portion of the surface of said drum for holding said recording paper between said drum and said supporting plate and heating means for thermally developing said image on said recording paper, said supporting plate comprising a metal plate having a polyfluoroethylene layer to be contacted with said recording paper, a heater layer covering said metal plate; and a feeding means for feeding said recording paper into said developing means.