US3733983A - Photographic composition system using a galvanometer movement - Google Patents

Photographic composition system using a galvanometer movement Download PDF

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Publication number
US3733983A
US3733983A US00113931A US3733983DA US3733983A US 3733983 A US3733983 A US 3733983A US 00113931 A US00113931 A US 00113931A US 3733983D A US3733983D A US 3733983DA US 3733983 A US3733983 A US 3733983A
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US
United States
Prior art keywords
character
drum
photo
light
count
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
US00113931A
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English (en)
Inventor
D Sinnott
D Alecci
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.)
STAR NEW ERA
STAR NEW ERA INC US
Indian Head National Bank
Original Assignee
STAR NEW ERA
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.)
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Assigned to INDIAN HEAD NATIONAL BANK, ONE INDIAN HEAD PLAZA, NASHUA, NH 03060 reassignment INDIAN HEAD NATIONAL BANK, ONE INDIAN HEAD PLAZA, NASHUA, NH 03060 ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNITEX INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B27/00—Control, indicating, or safety devices or systems for composing machines of various kinds or types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B17/00—Photographic composing machines having fixed or movable character carriers and without means for composing lines prior to photography
    • B41B17/04—Photographic composing machines having fixed or movable character carriers and without means for composing lines prior to photography with a carrier for all characters in at least one fount
    • B41B17/10—Photographic composing machines having fixed or movable character carriers and without means for composing lines prior to photography with a carrier for all characters in at least one fount with a continuously-movable carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B21/00—Common details of photographic composing machines of the kinds covered in groups B41B17/00 and B41B19/00
    • B41B21/08—Light sources; Devices associated therewith, e.g. control devices
    • B41B21/12—Stroboscopic light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B21/00—Common details of photographic composing machines of the kinds covered in groups B41B17/00 and B41B19/00
    • B41B21/16—Optical systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B27/00—Control, indicating, or safety devices or systems for composing machines of various kinds or types
    • B41B27/28—Control, indicating, or safety devices for individual operations or machine elements

Definitions

  • ABSTRACT An improved photographic composition system utilizes a pulsed light source which projects a beam of light through a character information to produce an image which is reflected by-a mirror onto a light sensitive sheet.
  • the mirror is rotated by a galvanometer in response to electronic inputs so that the projected characters are properly spaced in accordance with their point sizes.
  • Photocomposing machines are well known in the art. In some machines, cut stencils were interposed between a light source and light sensitive paper for film, and the paper or film was progressively moved for proper alignment and spacing of the characters. The production rate of these machines was necessarily low and required a high degree of skill from the operator.
  • the principle object of this invention is an improved photocomposition machine that will prepare a more rapid type-setting copy and film for preparation of printing plates or finished printed material at speeds compatible both with the present requirements of the graphic arts and the skills now available in any newspaper, book publisher or print shop.
  • a tape of the texual material to be composed is placed into a tape reader which reads the tape as to the character and line data.
  • the data is entered into a computer which transforms the character data to a count which identifies the position of the character on a drum and which controls the occurrence of a light flash through the drum which has character efiormations.
  • the computer also generates a digital code for the orientation of a mirror for reflecting the light subsequently onto a photosensitive material.
  • the physical orientation of the mirror is accomplished through the improvement comprising a coindidence control and a galvanometer movement.
  • a digital-to-analog converter for generating the analog voltage input to the galvanometer rotates the mirror only when the coincidence control indicates rotation will not interfere with imprinting the photosensitive material.
  • a gain control on the digital-to-analog converter permits a simple adjustment for adapting the photocomposition system for various character point sizes.
  • Another object of the present invention is to provide an improved photocomposing mechanism easily adapted to character groups of different point sizes.
  • a further object of the present invention is to provide an improved sub-system for rotating the reflecting surface with a galvometer movement in a photocompositions system.
  • FIG. 1 is a diagram of the improved photocomposition system.
  • FIG. 1 illustrates with blocks of sub-systems and perspective views of hardware the preferred embodiment of the present invention.
  • Light source 1 is powered by light power supply in response to a signal from coincidence gate 3.
  • Light source 1 is selected to provide an intense, short burst of light 4.
  • Light source 1 can be any controllable light source such as a zeon flash tube or even a laser.
  • Light 4 passes through monitor 5 which samples and detects a portion of light 4.
  • Beam splitter 6 deflects a portion of light 4 to light detector 7 while the remainder of light 4 continues to drum assembly 8.
  • Light detector 7 transforms incident light to an electrical signal which is fed into the light power supply 2 so as to maintain a predetermined light output intensity from light source 1.
  • Drum assembly 8 is comprised of a drive motor 9 which rotates drum l0 continuously.
  • Drum 10 has a mask which has a group of transparent alphanumerics l1 (commonly called a font) and a group of corresponding transparent apertures 12.
  • Light source 13 is simple source of light for illuminating light detector 14 each time an aperture 12 passes between light source 13 and light detector 14. Each time light detector 14 is illuminated an electrical pulse is coupled to counter electronics 15. The numerical count in counter electronics 15 identifies the alphanumeric 11 which is in position for being impressed on photosensitive material 16 as will be described in detail.
  • Counter electronics l5 accumulates electrical pulses until the count is full at which point all alphanumerics 11 on drum 10 have been in position for being impressed. Counter electronics 15 then resets so as to start the count from zero. No alphanumeric 11 can be impressed during the reset time. The initial count after reset must always start with the same alphanumeric 11 in order to maintain the equivalence between the numerical count and the alphanumerics 11.
  • the light 4 which has passed through monitor 5 continues to reflecting mechanism 17 which is shown as a penta-reflector where the light 4 is reflected through the desired alphanumeric 11.
  • the lens system 18 projects the optical image 19 of alphanumeric 11 on reflcctor 20 which reflects the optical image 19 to thephotosensitive material 16.
  • the orientation of reflector 20 determines the position of the impressed optical image 19 on photosensitive material 16. Reflector 20 is controlled by the electronics shown in block diagram form and which will be described herein.
  • the distance between reflector 20 and photosensitive material 16 is made large enough so that perceptible distortion of the impressed optical image 19 does not occur for various parts of photosensitive material 16. If it is necessary to make the distance between reflector 20 and photosensitive material 16 small, distortion can be avoided, either by curving photosensitive material 16 so that the alphanumeric line 21 is equidistant from reflector 20, or by using an appropriate optical lens system.
  • mechanism 23 moves the photosensitive material 16 up for the next alphanumeric line 21.
  • Developer 24 processes and develops photosensitive material 16 and then cutter 25 cuts strips 26 for storage and future use.
  • Encoded on tape 22 is data specifying alphanumerics l1 and the completion of alphanumeric line 21.
  • Tape 22 is decoded by tape reader 27 and the decoded data is coupled to electronic computer and memory 28.
  • Computer 28 is programmed to take the alphanumeric data from tape reader 27 and generate a count number for character code register 29 and a width number for character width register 30.
  • the character code register 29 temporarily stores the data and conples it to coincident gate 3.
  • the counter electronics input to coincidence gate 3 is the same as the count number from the character code register 29, the specified alphanumeric 11 is in position for impressing it on photosensitive material 16.
  • the data in the character width register 30 is transferred to the motor stepper register 31 where the data is stored until the coincidence gate 3 outputs a pulse to NAND gate 32 so as to gate the clock pulse input through gate 32.
  • the clock pulse input transfers the digital data from register 31 to buffer storage register 33.
  • Digital-to-analog converter 34 transforms the digital data in register 33 to an analog signal.
  • the converter 34 has a control input which permits the analog gain to be adjusted to conform with the alphanumeric point size base.
  • the digital date may be the same whereas the alphanumeric sizes may be different.
  • Amplifiers 35 and 36 amplify the analog signal from converter 34.
  • the amplified signal from amplifier 36 is coupled to galvanometer 37 which rotates reflector so that the next alphanumeric l1 specified by tape 22 will be impressed in the proper position on photosensitive material 16 in accordance with the size of the alphanumeric 11 last impressed.
  • a justified tape 22 will provide a code to computer 28 to indicate the completion of a line 21 otherwise the computer 28 will conclude that a line 21 is full. In either event, computer 28 outputs a leading data input to leading control electronics 38 so that a signal is provided for drive 23 for moving photosensitive material 16 to expose the next line 21.
  • the present invention provides an improved photocomposing machine which will prepare a rapid type-setting copy and film for preparation of printing plates at speeds which are compatible with present day requirements.
  • a photocomposing mechanism comprising:
  • count storage means independent of said character data carrier having information representing each character by a predetermined count
  • said light beam being projected within said drum and against said divertor to redirect it and cause it to pass through the selected character in the font to form an image of character
  • width storage means independent of said character data carrier and independent of said font having the width characteristics of each character stored therein,
  • said movable reflector being adapted to direct the image against the photo-sensitive sheet
  • said photo-sensitive sheet being movable in a path perpendicular of the path of the movable reflector
  • galvanometer means responsive to width characteristics in said width storage means for moving the movable reflector a predetermined distance whereby the movable reflector will direct the image of the characters in a single line on said photo-sensitive sheet in accurately spaced relationship to each other,
  • inhibit means to inhibit the pulsing of the light beam until the reflector is in proper position
  • said counting means comprising an opening adjacent each transparent character
  • a light source within the drum and directing a light ray through said opening and a light-sensitive count sensor adapted to receive said light ray
  • said adjusting means comprises a beam splitter which directs a portion of said generated beam to an intensity measuring device for controlling the intensity of the light source.

Landscapes

  • Laser Beam Printer (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Facsimile Scanning Arrangements (AREA)
US00113931A 1971-02-09 1971-02-09 Photographic composition system using a galvanometer movement Expired - Lifetime US3733983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11393171A 1971-02-09 1971-02-09

Publications (1)

Publication Number Publication Date
US3733983A true US3733983A (en) 1973-05-22

Family

ID=22352366

Family Applications (1)

Application Number Title Priority Date Filing Date
US00113931A Expired - Lifetime US3733983A (en) 1971-02-09 1971-02-09 Photographic composition system using a galvanometer movement

Country Status (7)

Country Link
US (1) US3733983A (de)
CH (1) CH545191A (de)
DE (1) DE2205916A1 (de)
FR (1) FR2126712A5 (de)
GB (1) GB1379842A (de)
IT (1) IT948483B (de)
NL (1) NL7200572A (de)

Also Published As

Publication number Publication date
NL7200572A (de) 1972-08-11
DE2205916A1 (de) 1972-08-24
IT948483B (it) 1973-05-30
GB1379842A (en) 1975-01-08
FR2126712A5 (de) 1972-10-06
CH545191A (de) 1973-12-15

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AS Assignment

Owner name: INDIAN HEAD NATIONAL BANK, ONE INDIAN HEAD PLAZA,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNITEX INC.;REEL/FRAME:004267/0550