US1817098A - Colored facsimile system - Google Patents

Colored facsimile system Download PDF

Info

Publication number
US1817098A
US1817098A US343768A US34376829A US1817098A US 1817098 A US1817098 A US 1817098A US 343768 A US343768 A US 343768A US 34376829 A US34376829 A US 34376829A US 1817098 A US1817098 A US 1817098A
Authority
US
United States
Prior art keywords
recording
picture
colors
color
colored
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US343768A
Other languages
English (en)
Inventor
Ranger Richard Howland
Samuel B Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Priority to US343768A priority Critical patent/US1817098A/en
Priority to DE1930554166D priority patent/DE554166C/de
Priority to GB6988/30A priority patent/GB352007A/en
Application granted granted Critical
Publication of US1817098A publication Critical patent/US1817098A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/50—Picture reproducers
    • H04N1/506—Reproducing the colour component signals picture-sequentially, e.g. with reproducing heads spaced apart from one another in the subscanning direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/50—Picture reproducers

Definitions

  • the present invention relates to the transmission of facsiiniles and the like over wire, wired radio or radio communication lines and is particularly concerned with the transmission of these pictures so that they may be received in their natural colors without the need of resorting to manual coloring processes or receiving the same picture several times in order to color the same in a manucr closely approximating an original.
  • the present invention relates that it is possible to reproduce transmitted pictures in colors at the receiver by successively transmitting the picture several different times while using a different color screen at thetransnitter for each transmission, so as to mark a recording paper according to the particular color tone intensity on the original picture, but such systems are not without o blection in that the difficulties of synchronizing and exactly matching the various spots of the received picture with those of the transinitted picture are inherent and cannot be conveniently avoided.
  • an object of our invention 1s to provide a novel method and apparatus for receiving by a single operation, pictures ytransmitted from a distant point by a single transmission operation, in colors closely approximatingI the original transmitted picture.
  • Another object of our invention is to pro- 1929. Serial N0. 843,768.
  • Still another object of our vinvention is to provide in connection with a picture receiving system a novel means for applying various color fluids or inksl to a recording surface for producing the received picture.
  • Still another 'object of our invention is to provide a novel method and Vapparatus whereby the various colors applied to the picture recording surface may be applied at spaced time intervals, if desired, or, at adjacent time intervals, if desired.
  • Still another object of our invention is to provide a method and apparatus for receiving pictures at a receiving point in such a manner that adjacent lines of the recording surface are colored with only a single color marking fluid but are so arranged that the sequence of coloring, by use of the various color recording fluids or inks, is such as to produce a color blended received picture that closely corresponds to the colors on the original picture beingftransmitted.
  • Still another object of our invention is to provide a system and arrangement for continually changing the transmission and reception of the picture from one to another of the various primary colors used to produce blended colors covering the entire visible spectrum.
  • Still other objects of our invention are to provide a method and apparatus for tra-nsmitting and reproducing a picture in its natural colors which is simple in its construction and arrangement, a system which is compact, convenient to install, elicient in its operation, substantially fool-proof, and capable of producing the desired results with the minimum of in-stallation expense.
  • Fig. 1 illustrates a preferred form of transmitting apparatus
  • Fig. 2 a suitable form of receiving arrange-l ment for cooperating with the transmitter of Fig. 1,'
  • Fig. 3 is a view of the line 3 3 of Fig. 1 looking in the direction of the arrows and illustrates a suitable means for driving a plurality of color screens or filters;
  • Fig. 4 illustrates conventionally one form of recording apparatus suitable for use in connection with our invention
  • Fig. 5 illustrates conventionally, on an enlarged scale, the sequence of recording the various colors in a three color time separated recording action, and the manner of building up the received picture;
  • Fig. G represents a color disk formed from three primary colors which may be substituted for the three disks shown by Fig. 3;
  • Fig. 7 represents a system using two primary colors, and is a moi'lification of the arrangement shown by Figs. 1 and 3; and,
  • Fig. 8 illustrates a further modification ef the arrangement shown by Fig. 7 wherein a single disk provided with two primary colors is used.
  • a picture carrying drum 1 supports a picture 3 which is to be transmitted.
  • the drum 1 may be rotated in any preferred manner (not shown) and by means of the threaded shaft 5, associated with the drive means for turning the drum, is advanced longitudinally in a spiral or helical path before a scanning means for analyzing the varying tone intensities of the elemental areas of the picture 3.
  • an illumination means for analyzing purposes a plurality of individual light sources 7 of the annular type surrounding tubular members 9 which contain scanning lens systems, (not herein shown but described and claimed in copending application of Richard Howland Ranger. Serial No. 321.821, filed November 26, 1928) ⁇ and the light from this source 7 is projected as a point source upon the picturt ⁇ surface 3 at a point which corresponds to the focus point of the lenses contained within the light tube members 9.
  • the light tube members 9 are herein shown as separated by a predetermined amount which is equal in each case to the width of three successive lines of scanning on the transmitted picture. However, for a two color transmission system only two scanning lenses would be provided if spaced recording is desired. Also for successive line recording in either case only a single scanning lens system is needed, as will hereinafter be described.
  • the diaphragms 13 are adjustable with respect to the amount of opening in two directions by means of the thumb screws 17 in a manner disclosed inthe above named copending a plication of Richard Howland Ranger. uri-ents produced in the photo cells 15 by light reaching the same are then appropriately amplified in any desired manner by means of an amplifying system 19 and transmitted from a transmitter 21 and associated antenna system.4 23 if the invention is to be used for radio communication and if for a wire system a wire line would be substituted for the transmitting antenna.
  • the photoelectric cell members 15 are connected in parallel and enclosed within a light opaque housing 25 so as to prevent external light other than that rcflected from the picture surface from effecting any of the photoelectric elements.
  • the light sources 7 are preferably continually illuminated to avoid switching arrangement and, therefore, the reflected light from the picture surface is continually directed backwardly through the tubular members 9 to the lenses 11 so as to effect the photo cells.
  • a plurality of color screens A, B, and C which are mounted on spindles through the sides of the housing 25 so as to rotate in the space between the ends of the light tube members 9 and the lenses 11.
  • These color screens are all driven from a single shaft 27 which is in turn rotated through a gear reduction mechanism 29 from the same prime mover that turns the picture drum 1 and in the case where three color screens are provided as in the present invention the shaft 27 will turn at 1/3 of the speed of shaft 5.
  • the color screens A, B, and C are each composed of 2st()o of black and 120 of red, blue, and yellow, respectively.
  • the color screens A, B, and C composed respectively of red, blue, and yellow (which form the primary colors for a three color system) in a 1/3 ratio with respect to the black are so positioned on the shaft 27 that at periods when light from one of the tubes 9 is projected backwardly and is able to pass through the red portion of the disk A, for example, the light which is rejected backwardly through the other tubu ar members 9 will be shut off from the photo cells associated with each of these tubes by means of the black portion on the disks B and C.
  • the photo cells 15 are suc cessively energized by either light passing through the red, blue or yellow portlons of the disksl A, B, and C.
  • Fig. 2 we have illustrated a system for recording spaced lines and by Fig. 5 have shown a record wherein the lines of recording have been spaced in accordance with a system following transmitting and receiving systems disclosed by Figs. 1 and 2.
  • a receiving drum 41 is arranged for rotation on a threaded shaft 43 in a mannersimilar to -that of the transmitter shown by Fig 1 and synchronism between the rotation of the drums 1 and 41 may be maintained in a manner described in connection with copending application of R. H. Ranger, Serial No. 51,191, filed August 19, 1925, wherein a tuning fork is used at both the transmitter and receiver for obtaining a relatively fine aljustment of rotational speeds and this is vchecked by means of a seconds pendulum forming a secondary synchronizing means and checking the accuracy of the tuning fork.
  • the particular synchronizing arrangement per se forms no part of the present invention and other well known synchronizing schemes may be substituted where de- ,sired.
  • Carried upon the drum 41 is a sheet 45 for recording the received pictures.
  • a sheet 45 for recording the received pictures.
  • Signals as transmitted from the transmitter and antenna 21 and 23, respectively, are picked up upon the receiving antenna system 47 and from there directed to a receiving arrangement 49 of any appropriate and well known typehaving its output connected with an amplifying system 51.
  • the output of the amplifier is arranged so that one output connection 53 thereof is directed to one terminal of each of the signal recorders, generally designated A', B', and C, and the other connection 55 thereof is connected through an app-ropriate brush 57 to a slip ring 59 on the shaft 61 of a commutator, generally designated 63, for a purpose to be hereinafter described.
  • the commutator 63 is driven from the shaft 43 of the picture recording apparatus through an appropriate reducing gear system 65 of the same general type as disclosed by 29 at the transmitter so as to produce one complete revolution of the commutator for each three revolutions of the transmitter drum.
  • the commutator is composed of three sections 67, 69, and 71, each of which is formed of 1% insulating material and 1/3 conducting material, in much thesame manner as the color disks shown by Fig.
  • output cur rent from the amplifier 51 will flow through the conductor 53 to the recorder A, through the connection 83, the brush 77, the commutating segment 71, the shaft-61, slip ring 59, brush 57, and connection 55, so that the recorder A is energized, if energy is being transmitted from the photo cell arranged behind the disk A at the transmitter.
  • rlhe direction of rotation of the commutator 63 is indicated by the arrow and it will thus be seen that after the recorder A has been energized by energy output from the amplifier 51 that the recorder B will next be energized, and then the recorder C will follow in sequence, after which the recorder A will again be energized and the sequence will be repeated.
  • the recorders A', B', and C' may be of the general character shown by Fig. 4 of the accompanying drawings and which embody the basic principle of the invention as d1sclosed in copending application of C. W. Hansell in Serial No. 333,617, filed anuary 19, 1929.
  • ink or other marking fluld 1s supplied to the recorders A', B', and C' from tanks (not shown) under relatively high pressure through any appropnate supply means such as the tube 85 from which it is projected within the recorder between a pair of plate members 87 and 89.
  • the plates 87 and 89 are connected, as above described, by the connections 53 and 83, (considering recorder A', for example) with amplifier 51 and commutator section 71.
  • the fluid or ink is then projected between these plates 87 and 89 as avery fine stream and flows at high velocity through the nozzle portion of the recorder 91 and against the recording paper 45.
  • the ink stream projected from the tube 25 along a line 93 through a nozzle 91 is deflected along a path indicated as 95 so as to strike a recessed portion 97 in the nozzle from which it may flow back to the ink supply by way of a trough 99 provided in each nozzle.
  • the supply of ink for each nozzle (not shown) is continually under pressure and, since the colored inks should he projected upon the recording surface only at periods when signals are being received, hy an appropriate arrangement of electromagnetic valves controlled from commutator G3 or as shown) b v placing cams ilpon a shaft 109 driven through appro .iate drive gear mechanism from the re ucing gears 65, we have provided a means whereby each supply of ink may be turned off by the cams closing a valve in the ink supply line during periods when the particular recorder is not in use.
  • cams are all of similar design and arranged so as to sequentially open supply of ink or other appropriate marking fluid to the recorders A', B', and C', in a manner and time spaced relationship similar to the periods when the commutator 63 connects each successive recorders A', B' and C' with the amplifying arrangement 51. It will thus be seen that the ink or other fluid will not he supplied to any recorder unless the particular recorder is to be used for the purpose of recording the picture.
  • FIG. 5 shows conventionally and upon an enlarged scale the sequence of producing the various marks upon the record sheet 45.
  • the first line has been designated as 1 R, the second as 3 B, and, for example, the 6th line as 9 Y, meaning that while the line 9 Y is the 6th line from left to right on the picture it is, nevertheless, the 9th recorded in the recording process since alternate red, blue, and yellow lines are recorded.
  • a scheme of the character herein disclosed a two color recording action and obtain satisfactory color definition thereby.
  • Such a system might include, for example, the use of color screens and inks, or other appropriate recording fluids, having a reddish orange tint and the other having a blueish green tint in contrast to the disclosed system using the primary colors, red, blue, and yellow.
  • the color disks at the transmitter should then be composed of one-half black and one-half either reddish orange or bluish green and two recorders projecting similarly colored recording fluids against the recording surface should work in conjunction therewith at the receiver. This has been shown schematically in Fig.
  • the method of recording pictures in colors closely approximating those of an original which includes receiving signals of varying strength corresponding t0 the several component color tone intensities onl elemental areas of a picture surface being transmitted, projecting a recording medium against a record surface for producing the received picture, controlling the path of the said recording medium in accordance with the strength of the received signals, and successively changing the recording from one to another of a series of recording mediums corresponding in color to the several component colors chosen.
  • the method of reproducing transmitted pictures in colors closely approximating the colors in an originally transmitted picture vvhich includes receiving signals corresponding in strength to the several component color tone intensities or elemental areas of a transmitted picture, projecting a series of colored recording fluids against a record surface for rebuilding the picture, controlling the path of the recording mediums projected against said recording surface, and successively changing the recording action from one to another 0f said recording mediums for yrebuilding the received picture in a line for line manner in varying colors corresponding to the component' colors from which an original picture Was formed.
  • the method of recording pictures in colors closely approximating those of ⁇ an original which includes receiving signals varied in strength in accordance with successive color intensities of severalcomponent colors forming the elemental areasl of a picture surface being transmitted, projecting a recording medium against a record surface for forming a received picture, controlling the path of the said recording medium in accordance with the strength of the received signals, and changing the recording in a predetermined sequence from one to another 'of a series/of component' colored recording mediums.
  • an ap aratus for recording pictures in colors close y approximating those of an original picture means for receiving signals corresponding to the predetermined component colors comprising an original picture, a recording surface for recording the said received picture, means for projecting colored recording fluids against said surface, and means for sequentially changing the recording action from one to another of said colored recording mediums.
  • cording drum carrying a surface for recording the received pictures, means for projecting a plurality of different colored recording mediums against said record surface for producing a received picture, means for controlling the path of said recording mediums in accordance with the strength of said received signal pulses, and means for successively changing the recording 'action from one to another of said colored recording mcdiums for successively building up a received,I picture in a line for line manner inwhicll each successive line is produced in a different color.
  • means for receiving signals varied in accordance with predetermined color tones on elemental areas of an originally transmitted picture a recording drum carrying a record surface upon which the received picture is to be produced, means for projecting a plurality of different colored recording fluids against said drum and record surface, means controlled by said received signals for controlling each of said recording fluids, and means for changing the recording action sequentially and at predetermined time intervals from one to another of said recording fluids for producing a builtup picture.
  • a recording drum carrying a surface upon which the received signal is to be produced, means for projecting sequentially recording fluids of differing colors against said drum and means controlled by received signal pulses for controly ling each of said projected recording fluids to produce said picture.
  • an apparatus for recording pictures in colors closely approximating those of an originally transmitted picture means for receiving signals varied in accordance with the several component tone intensities of elemental areas on a transmitted picture surface, a recording drum carrying a surface upon which the received signal is to be recorded, a plurality of electrostatic recording means adjacent said picture drum, means for projecting recording fluids of different colors through each of said recorders, means controlled by received signal pulses for varying the potentials applied to each of said electrostatic reeorders, means controlled by the rotation of said recording drum for successively and alternately closing the supply of recording fluid to said recorders so as to supply fluid to only a single recorder at any predetermined time interval, and means also controlled by the rotation of said drum for alternately and successively connecting the said recorders with said signal receiving means so as to produce a recorded picture having successive lines thereof recorded in different component colors and a finished picture in Which the color blending closely approximates that in the said original picture.
  • the method of applying to a surface a plurality of materials of different primary colors for forming a colored record image on the surface which comprises projecting recording mediums, each of a selected primary color, toward a record surface, controlling each of the recording mediums in a manner such that they operate severally, limiting the recording action of each medium to predetermined periods, and independently controlling the amount of each of the recording mediums reaching the record surface.
  • duplicates corresponding to originals' transmitted which comprises the steps of projecting a plurality of recording mediums, each of a separate primary color, toward a record surface, varying the time of operation of each of the recording mediums in a manner such that each medium is capable of acting separately upon the record surface for predetermined time periods, and varying the amount of recording medium reaching the record surface in accordance with the tone value of the original corresponding to the primary color projected 15.
  • a system for producing an image from received signaling .impulses corresponding to the component colors of successive elements which comprises a receiving surface, means for projecting a plurality of color marking mediums toward said record, means for controlling the separate marking' mediums independently in accordance with the tone of the primary color of the original represented by the separate marking mediums, and means for limiting the marking action to a single recording medium during predetermined time intervals.
  • a system for producing color duplicates corresponding to transmitted records which comprises projecting a plurality of colored marking fluids, each of a selected primary color, toward a record surface, producing a relative movement between said marking fluids and said record surface so as to cause said marking fluids to trace said record surface in a line for line manner, sequentially changing the recording action from one to another of said marking mediums at each change in the line for line manner of tracing, and varying the intensity of marks of each of the independent marking fluids in accordance with the tone value of the selected primary colors.
  • a system for producing color duplicates corresponding to transmitted records which comprises projecting a plurality of complementarily colored marking fluids upon a record surface, rotating the said record surface relative to the source of said marking fluids so as to cause said marking fluids to trace said record surface in a series of adjacent lines, limiting the action of the marking fluids upon the record surface to a single color fluid at any instant, sequentially changing the recording action from one to another of said marking mediums at the completion of each rotation of the record surface, and varying the intensity of marking of each of the independent marking fluids in accordance with the tone value of the selected primary colors.
  • the method which comprises receiving signals corresponding to the predetermined component colors comprising the original picture, projecting toward a recording surface colored recording fluids, and sequentially changing the recording action from one to another of the colored recording fluids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Ink Jet (AREA)
  • Color Image Communication Systems (AREA)
US343768A 1929-03-01 1929-03-01 Colored facsimile system Expired - Lifetime US1817098A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US343768A US1817098A (en) 1929-03-01 1929-03-01 Colored facsimile system
DE1930554166D DE554166C (de) 1929-03-01 1930-03-01 Verfahren zur Aufzeichnung farbiger Bilder
GB6988/30A GB352007A (en) 1929-03-01 1930-03-03 Improvements in or relating to picture and the like telegraph systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US343768A US1817098A (en) 1929-03-01 1929-03-01 Colored facsimile system

Publications (1)

Publication Number Publication Date
US1817098A true US1817098A (en) 1931-08-04

Family

ID=23347575

Family Applications (1)

Application Number Title Priority Date Filing Date
US343768A Expired - Lifetime US1817098A (en) 1929-03-01 1929-03-01 Colored facsimile system

Country Status (3)

Country Link
US (1) US1817098A (de)
DE (1) DE554166C (de)
GB (1) GB352007A (de)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473729A (en) * 1945-07-31 1949-06-21 Salz Max Color facsimile apparatus
US2556550A (en) * 1947-02-27 1951-06-12 Eastman Kodak Co Heat sensitive printing element and method
US2572550A (en) * 1945-09-17 1951-10-23 Dufay Chromex Ltd Electrical means for reproducing photographs
US2584695A (en) * 1947-08-14 1952-02-05 Bell & Howell Co Electrostatic reproduction process and apparatus
US2716826A (en) * 1951-10-24 1955-09-06 Huebner Company Apparatus for reproducing images
US2764500A (en) * 1951-10-04 1956-09-25 Huebner Company Method and apparatus for reproducing images
US2924646A (en) * 1953-04-23 1960-02-09 Gen Dynamics Corp Printing apparatus
US3135828A (en) * 1962-04-20 1964-06-02 Luther G Simjian Apparatus for providing solid reproductions
US3181987A (en) * 1961-05-08 1965-05-04 Image Designs Inc Methods and systems for reproducing color patterns in manufactured articles, particularly mosaic tile
US3243507A (en) * 1963-03-08 1966-03-29 Stanford Research Inst Bandwidth reduction facsimile system
US3373438A (en) * 1966-01-03 1968-03-12 Pitney Bowes Inc Jet printer
US3404221A (en) * 1965-10-22 1968-10-01 Arthur V. Loughren Controlled ink-jet copy-reproducing apparatus
US3416153A (en) * 1965-10-08 1968-12-10 Hertz Ink jet recorder
US3484794A (en) * 1967-11-09 1969-12-16 Teletype Corp Fluid transfer device
US3484793A (en) * 1966-05-02 1969-12-16 Xerox Corp Image recording apparatus ink droplet recorder with optical input
US3553371A (en) * 1967-02-28 1971-01-05 Nippon Enlarging Method for enlarged muticolor printing and a device therefor
US3946405A (en) * 1974-10-29 1976-03-23 Teletype Corporation Ink jet mask
US4112469A (en) * 1977-04-21 1978-09-05 The Mead Corporation Jet drop copying apparatus
US4208666A (en) * 1978-10-23 1980-06-17 The Mead Corporation Multiple copy ink jet printer
US4250510A (en) * 1979-09-04 1981-02-10 The Mead Corporation Fluid jet device
US4293866A (en) * 1978-12-13 1981-10-06 Ricoh Co., Ltd. Recording apparatus
US4320406A (en) * 1979-06-26 1982-03-16 Siemens Aktiengesellschaft Ink printing device for multi-colored printing of a recording medium
US4560997A (en) * 1982-07-07 1985-12-24 Canon Kabushiki Kaisha Method and apparatus for forming a pattern
US4604654A (en) * 1982-07-23 1986-08-05 Canon Kabushiki Kaisha Image forming method and apparatus
US4686538A (en) * 1984-10-31 1987-08-11 Canon Kabushiki Kaisha Tone recording method
US4692773A (en) * 1982-07-23 1987-09-08 Canon Kabushiki Kaisha Image forming method using image forming elements having different concentrations and pitches
US4713684A (en) * 1983-03-08 1987-12-15 Canon Kabushiki Kaisha Image processing apparatus for discriminating and processing different formats of color image signals
US4713746A (en) * 1982-05-14 1987-12-15 Canon Kabushiki Kaisha Method for forming pictures
US4713701A (en) * 1982-09-18 1987-12-15 Canon Kabushiki Kaisha Picture producing apparatus using multiple dot forming units and recording materials of different concentrations
US4714964A (en) * 1984-07-13 1987-12-22 Canon Kabushiki Kaisha Intermediate gradient image forming method
US4727436A (en) * 1982-09-01 1988-02-23 Canon Kabushiki Kaisha Method and apparatus for producing a picture
US4772911A (en) * 1984-01-19 1988-09-20 Canon Kabushiki Kaisha Image formation apparatus
US4959659A (en) * 1983-03-08 1990-09-25 Canon Kabushiki Kaisha Color picture forming apparatus and method
US5625397A (en) * 1994-11-23 1997-04-29 Iris Graphics, Inc. Dot on dot ink jet printing using inks of differing densities
US6081281A (en) * 1991-12-30 2000-06-27 Vutek, Inc. Spray head for a computer-controlled automatic image reproduction system

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473729A (en) * 1945-07-31 1949-06-21 Salz Max Color facsimile apparatus
US2572550A (en) * 1945-09-17 1951-10-23 Dufay Chromex Ltd Electrical means for reproducing photographs
US2556550A (en) * 1947-02-27 1951-06-12 Eastman Kodak Co Heat sensitive printing element and method
US2584695A (en) * 1947-08-14 1952-02-05 Bell & Howell Co Electrostatic reproduction process and apparatus
US2764500A (en) * 1951-10-04 1956-09-25 Huebner Company Method and apparatus for reproducing images
US2716826A (en) * 1951-10-24 1955-09-06 Huebner Company Apparatus for reproducing images
US2924646A (en) * 1953-04-23 1960-02-09 Gen Dynamics Corp Printing apparatus
US3181987A (en) * 1961-05-08 1965-05-04 Image Designs Inc Methods and systems for reproducing color patterns in manufactured articles, particularly mosaic tile
US3135828A (en) * 1962-04-20 1964-06-02 Luther G Simjian Apparatus for providing solid reproductions
US3243507A (en) * 1963-03-08 1966-03-29 Stanford Research Inst Bandwidth reduction facsimile system
US3416153A (en) * 1965-10-08 1968-12-10 Hertz Ink jet recorder
US3404221A (en) * 1965-10-22 1968-10-01 Arthur V. Loughren Controlled ink-jet copy-reproducing apparatus
US3373438A (en) * 1966-01-03 1968-03-12 Pitney Bowes Inc Jet printer
US3484793A (en) * 1966-05-02 1969-12-16 Xerox Corp Image recording apparatus ink droplet recorder with optical input
US3553371A (en) * 1967-02-28 1971-01-05 Nippon Enlarging Method for enlarged muticolor printing and a device therefor
US3484794A (en) * 1967-11-09 1969-12-16 Teletype Corp Fluid transfer device
US3946405A (en) * 1974-10-29 1976-03-23 Teletype Corporation Ink jet mask
US4112469A (en) * 1977-04-21 1978-09-05 The Mead Corporation Jet drop copying apparatus
US4208666A (en) * 1978-10-23 1980-06-17 The Mead Corporation Multiple copy ink jet printer
US4293866A (en) * 1978-12-13 1981-10-06 Ricoh Co., Ltd. Recording apparatus
US4320406A (en) * 1979-06-26 1982-03-16 Siemens Aktiengesellschaft Ink printing device for multi-colored printing of a recording medium
US4250510A (en) * 1979-09-04 1981-02-10 The Mead Corporation Fluid jet device
US4713746A (en) * 1982-05-14 1987-12-15 Canon Kabushiki Kaisha Method for forming pictures
US4560997A (en) * 1982-07-07 1985-12-24 Canon Kabushiki Kaisha Method and apparatus for forming a pattern
US4692773A (en) * 1982-07-23 1987-09-08 Canon Kabushiki Kaisha Image forming method using image forming elements having different concentrations and pitches
US4604654A (en) * 1982-07-23 1986-08-05 Canon Kabushiki Kaisha Image forming method and apparatus
US4727436A (en) * 1982-09-01 1988-02-23 Canon Kabushiki Kaisha Method and apparatus for producing a picture
US4713701A (en) * 1982-09-18 1987-12-15 Canon Kabushiki Kaisha Picture producing apparatus using multiple dot forming units and recording materials of different concentrations
US4713684A (en) * 1983-03-08 1987-12-15 Canon Kabushiki Kaisha Image processing apparatus for discriminating and processing different formats of color image signals
US4959659A (en) * 1983-03-08 1990-09-25 Canon Kabushiki Kaisha Color picture forming apparatus and method
US4772911A (en) * 1984-01-19 1988-09-20 Canon Kabushiki Kaisha Image formation apparatus
US4714964A (en) * 1984-07-13 1987-12-22 Canon Kabushiki Kaisha Intermediate gradient image forming method
US4686538A (en) * 1984-10-31 1987-08-11 Canon Kabushiki Kaisha Tone recording method
US6081281A (en) * 1991-12-30 2000-06-27 Vutek, Inc. Spray head for a computer-controlled automatic image reproduction system
US5625397A (en) * 1994-11-23 1997-04-29 Iris Graphics, Inc. Dot on dot ink jet printing using inks of differing densities

Also Published As

Publication number Publication date
GB352007A (en) 1931-07-03
DE554166C (de) 1932-07-06

Similar Documents

Publication Publication Date Title
US1817098A (en) Colored facsimile system
US2109540A (en) Means and method of coloring lightformed images
US2227108A (en) Signaling system
US2414101A (en) Graphic privacy system
US2389979A (en) Color television system
US1988931A (en) Colored television apparatus
US3723645A (en) Facsimile recording system for recording patterns on both sides of a recording medium
US2709716A (en) Contrast enhancing aerial photography
US1790723A (en) Facsimile system
US1753961A (en) Signaling system
US3037074A (en) Facsimile telegraphy
US2786887A (en) Reduced bandwith television system
US2185806A (en) Color picture transmission system
US1945968A (en) Television system and apparatus
US1854315A (en) Transmission of colored pictures
US1839361A (en) Image producing system
US2409488A (en) Facsimile communication system
US2428945A (en) Color facsimile
US2292062A (en) Recording and reproduction of alternating impulses
US1810188A (en) Television system
US2008272A (en) Scanning system for television apparatus
US2109773A (en) Electrical transmission of images in natural colors
US2001730A (en) Electrooptical system
US2425950A (en) Signal transmission device
US1884288A (en) Facsimile transmission