US3724347A - Apparatus for selectively exposing a photosensitive surface - Google Patents

Apparatus for selectively exposing a photosensitive surface Download PDF

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Publication number
US3724347A
US3724347A US00136909A US3724347DA US3724347A US 3724347 A US3724347 A US 3724347A US 00136909 A US00136909 A US 00136909A US 3724347D A US3724347D A US 3724347DA US 3724347 A US3724347 A US 3724347A
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United States
Prior art keywords
photosensitive surface
cathode ray
ray tube
radiant
article
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Expired - Lifetime
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US00136909A
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English (en)
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H Gerber
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Gerber Systems Corp
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Gerber Scientific Instrument Co
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70—Microphotolithographic exposure; Apparatus therefor
    • G03F7/70375—Multiphoton lithography or multiphoton photopolymerization; Imaging systems comprising means for converting one type of radiation into another type of radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/022—Draughting machines or drawing devices for keeping parallelism automatic
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/003—Apparatus for photographing CRT-screens

Definitions

  • ABSTRACT A method and apparatus for selectively exposing the photosensitive surface of an article employs a cathode ray tube to generate radiant images which are projected onto the photosensitive surface.
  • the cathode ray tube is connected to a computer which controls the deflection of its beam to generate the images, and the tube and the associated optical system are mounted on a carriage movable relative to the photosensitive surface to enable exposure of different regions of the photosensitive surface and the exposure of lines on the photosensitive surface by moving a projected spot of light.
  • the radiant images are produced both by drawing images on the display screen with the beam and by causing the beam to substantially continuously energize different selected areas of the screen to illuminate predefined images, the shapes of which are determined by masks or similar means, each one of such selected areas having one of the predefined images associated with it.
  • This invention relates to an apparatus and method for selectively exposing the photosensitive surface of an article to produce a graphic art work and, more particularly, is concerned with an apparatus and the method carried out by the apparatus in which an energized beam is utilized to generate images to be projected onto the photosensitive surface.
  • the present invention resides in an apparatus and the method by which the apparatus operates to selectively expose a photosensitive surface of an article.
  • the apparatus comprises a generator means, such as the electron gun of a cathode ray tube, for generating an energized beam along a beam axis, and a radiant energy emitting means, such as the screen of a cathode ray tube, located along the beam axis and sensitive to the beam for emitting radiant energy from emitting regions impinged upon by the beam.
  • the emitting means includes two different areas which are used to generate radiant images in different ways.
  • the beam is deflected by a deflector means, under the control of a first control means, to cause the beam to draw, within the first area, a character or other radiant image in the same manner as a pen, pencil or other writing instrument is conventionally used to draw characters on a piece of paper.
  • the beam is deflected, by the deflector means under the control of a second control means, so as to substantially continuously impinge upon and energize the full extend of the second area to thereby produce radiant energy used to illuminate a character or other image associated with such second area, the shape of which image is defined by an associated mask or other means.
  • a plurality of such second areas are provided with each having a different predefined image associated therewith.
  • Projection means are provided for projecting the radiant images produced by both the first and second areas of the emitting means onto the photosensitive surface of the article to be exposed.
  • the two different control means and the two different areas of the emitting means permit radiant images of graphic characters to be prepared by both drawing the images with the beam and by causing predefined graphic characters or other images to become radiant.
  • the images can be generated and projected onto the photosensitive surface without displacing the entire image generating apparatus.
  • a spot of radiant energy may be produced, by using either area of the emitting means, and projected onto the photosensitive surface. This spot may then be moved relative to the photosensitive surface to produce the line or character by moving the entire image generating apparatus relative to such surface.
  • FIG. 1 is a diagram, partly in block form and partly schematic, showing the general configuration of an apparatus embodying the present invention.
  • FIG. 2 is an elevational view of the cathode ray tube and lens system utilized in the apparatus of FIG. 1.
  • FIG. 3 is a frontal view of the screen of the cathode ray tube of FIG. 2.
  • FIG. 4 is a diagram showing partly in block form and partly in schematic form the detailed construction of the apparatus in FIG. 1.
  • FIG. 5 is a fragmentary view of the screen of the cathode ray tube shown in FIG. 3.
  • FIG. 1 shows the general configuration of an apparatus for selectively exposing a photosensitive material according to the present invention.
  • the apparatus generally designated 10, utilizes a cathode ray tube 12 and a lens system 14 which are translated above a support table 16 in both of the illustrated X and Y coordinate directions by a numerical control computer 18.
  • the computer 18 may be a general or special purpose computer which receives from an input device program information defining a particular graphic to be exposed on a photosensitive material M positioned in a spread condition on the support table 16.
  • the program information is stored in the computer memory, which can be a magnetic or punched memory tape, as coded information which is read and understood by the computer. From the information, the computer generates a sequence of machine commands which cause the material M to be exposed by the cathode ray tube 12 and lens system 14 in the graphic pattern.
  • Motion commands generated by the computer 18 are transmitted through X and Y drivers 22 to an X drive motor 23 and a Y drive motor 24.
  • the output shaft 26 of the X drive motor 23 is a lead screw which is threadably engaged by a guide block 28 at one edge of the support table 16.
  • the guide block 28 is mounted on a rail or other guide mechanism (not shown) to be moved back and forth along the table 16 in the X direction by the X drive motor 23.
  • a corresponding guide block 30 at the opposite side of the support table 18 is interconnected with the guide block 28 by a rail 32 so that the two blocks 28 and 30 move together back and forth over the table 16 in the X direction.
  • the cathode ray tube 12 and lens system 14 are supported on the rail 32 by means of a carriage 34 which is translatable on the rail 32 relative to the support table 16 in the Y direction.
  • the Y drive motor 24 has a splined drive shaft 36 connected through a gear mechanism (not shown) in the block 28 to a lead screw 38 which extends over the support table 16 between the blocks 28 and 30 and threadably engages the carriage 34 to move it, the cathode ray tube 12 and the lens system 14 in the Y direction.
  • a two-axis carriage system is formed in which the guide blocks 28 and 30 and rail 32 are the X carriage and the carriage 34 translatable on the rail 32 is the Y carriage.
  • Composite movements in both the X and Y directions or individual movements along each direction are produced by the drive motors to move the tube 12 and the lens system 14 over the entire photosensitive surface of the material M.
  • the cathode ray tube 12 and the lens system 14 are fixedly mounted to the carriage 34 with the optical axis 40 of the lens system colinear with the central axis of the tube along which the cathode ray beam is generated, and, therefore, intersecting the display screen 42 at the center in perpendicular relationship with the screen.
  • the lens system and the optical axis 40 are also oriented perpendicular to the work surface of table 16 and the photosensitive surface of the material M spread on the table 16.
  • the lens system 14 has a field of view which fully encompasses the display screen 42 and is positioned above the work surface of table 16 at a distance which allows a sharply focussed image of the picture on the'display screen 42 to be projected onto the photosensitive surface of the material M. It will be noted that the lens screen 42 is actually projected onto the material M.
  • the computer 18 In addition to the motion commands to move the cathode ray-tube l2 and lens system 14 over the table 16, the computer 18 also produces commands to control the beam generated within the cathode ray tube 12.
  • Computer commands are delivered to the beam current control 50 which is connected to the electron gun of the cathode ray tube to regulate the beam current or the intensity of the beam and the image produced by the beam at the impingement region on the display screen 42.
  • the computer 18 also supplies deflection commands to the beam deflection control 52 which is connected to the deflection plates within the cathode ray tube 12 to deflect the beam away from the beam axis and across the display screen 42.
  • the computer 18, the beam controls 50 and 52 and the cathode ray tube 12 are constructed to enable the generation of radiant images in either one of two different ways, the first of these involving the movement of the beam over one area of the screen to draw a character or other image in much the same fashion as characters are normally drawn by pen or pencil on a sheet of paper, and the second of these involving the use of the beam to energize another substantial area of the screen to produce radiation illuminating a character or other image defined by a mask or other means.
  • the screen 42 i on the tube 12 is a conventional cathode ray tube screen to the extent that it is covered with a phosphorescent material which produces radiant energy at the point of beam impingement.
  • the portion of the display screen 42 surrounding the center 62 is used and forms a firstv area 59 which is capable of emitting radiant energy at every point thereof on which the beam impinges. Therefore, it is possible for the computer 18 (FIG. 1) to modulate and deflect the beam so that it draws characters in such area of the screen.
  • the image of the letter A, shown at the center of the screenin FIG. 3 is
  • sub-routines for generating commonly used characters such as letters, numbers or other symbols are stored in the computer memory or inserted in the memory as an input at the beginning of an exposure operation.
  • indexing the tube 12 and lens system 14 an amount equal to the width of the letter after each letter is formed, it is possible to print out (expose) words and instructions from the sub-routines stored in the computer memory.
  • the individual letters or numbers are drawn on the screen by blanking and deflecting the beam within the tube and without moving the I two-axis carriage mechanism. This allows the exposure of each character to be carried out more rapidly. than present invention has particular utility in producing by a process involving movement of the carriages.
  • the outer annular portion of the screen 42 is covered or partially obscured with an opaque mask 60 including a plurality of openings or apertures 61, 61 each of which defines a unique character.
  • an opaque mask 60 including a plurality of openings or apertures 61, 61 each of which defines a unique character.
  • Some of the illustrated characters for example, have shapes such as used to generate exposures of conductors, terminal pads and similar shapes found on printed circuit boards. of course, the illustrated characters are intended to be exemplary only and the style or shape of the characters may be varied widely without departing from the invention, and is desired some or all of the characters may be alphabetical or numerical characters.
  • each opening 61 of the mask resides within the bounds of an associated second area of the screen 42 so that when the beam of the tube is caused to impinge on and energize such second area in a substantially continuous manner, the mask opening 61 is illuminated to produce a radiant image of the character defined by the opening.
  • the radiant image of the character so produced is then projected onto the photosensitive surface of the material M (FIG. 1) through the lens system 14.
  • the substantially continuous energization by the beam of the second area associated with each mask opening 61 is preferably achieved by focusing the beam to form a spot substantially smaller than the opening 61 and by deflecting it in a raster fashion over the second area so as to repeatedly and rapidly scan such area.
  • the beam may also be defocused so as to form a spot larger than the mask opening 61 while the beam axis is held stationary at the center of such openmg.
  • FIG. 4 shows the construction of the beam current control 50 and the beam deflection control 52 which permit printed characters such as the illustrated letter A to be drawn in the first area 59 of the display screen in response to commands from the control computer 18.
  • the beam current control 50 includes a blanking circuit 70 which is connected through a summing amplifier 72 to the control grid of the electron gun in the cathode ray tube 12. In response to commands from the computer 18, the blanking circuit 70 provides voltage signals which bias the grid and turn the beam on or off.
  • deflection commands are supplied from the computer 18 to the X deflection amplifier 78 and the Y deflection amplifier 80 which are connected to the corresponding deflection plates in the cathode ray tube 12 to cause the beam to be deflected in accordance with stored sub-routines defining the configuration of the letter, number or other figure to be drawn, the blanking commands and the deflection commands being synchronized to produce the radiant image of the character.
  • the computer 18 supplies commands through the X and Y drivers 22 to the X drive motor 23 and the Y drive motor 24 to index the carriages supporting the tube 12 and lens system 14 by the distance required between characters and words.
  • the openings 61, 61 in the mask 60 define graphic characters which have various configurations and dimensions which may be larger than the radiant spot produced at the impingement point of the beam.
  • the beam to produce an image of the circular opening 61d of the mask 60, the beam must be deflected fundamentally from the origin or center 62 of the screen 42 to the coordinates X,, Y, of the center of the opening 61d and then scanned along a raster path R covering the sub-area of the screen within which the opening is located. If the radiant spot produced by the beam is larger than the mask opening to be illuminated, the beam need not necessarily be scanned.
  • the beam may be fundamentally deflected from the center 62 to a position having the coordinates X Y of the center of the opening 61c and then held stationary for as long a time as required to effect the desired exposure.
  • the radiant spot produced by the beam may be purposely made larger than the opening to be illuminated by defocusing it.
  • the apparatus of FIG. 4 related to the production of radiant images through the use of the mask 60 includes the blanking circuit in the beam current control St) and the X and Y deflection amplifiers 78 and 80 and the raster scan generator 82 in the beam deflection control 52. Upon command from the computer 18, the
  • blanking circuit 70 turns on the beam in he cathode ray tube and the deflection amplifiers 78 and 89 receive deflection signals which cause the beam to be deflected fundamentally toward the center of the mask opening to be illuminated.
  • a signal from the computer to the scan generator 82 superimposes scanning signals on the fundamental deflection signals and causes the beam to follow the small raster path R covering the surface of the screen containing the mask opening.
  • a radiant image of the character so illuminated is projected through the lens system 14 onto the photosensitive material M.
  • each mask opening is spaced from the center 62 of the screen and from the optical axis 40 of the lens system 14.
  • the image of each opening as projected onto the photosensitive surface of the material M correspondingly is spaced from the intersection point of the optical axis 40 and the photosensitive surface.
  • the computer utilizes the fundamental deflection information representing the location of the mask opening relative to its center of the display screen 42 and produces a compensating displacement of the tube 12 and the lens system 14 through signals transmitted to the X and Y drivers 22 and drive motors 23 and 24 to position the projected image at the desired location relative to the photosensitive surface.
  • various other means may be used in place of the illustrated mask 60 for defining the shape of an image as the beam is caused to energize an associated subrarea of the screen.
  • one alternative is to eliminate the mask 60 and to construct the screen 42 of the cathode ray tube so that at each sub-area of the screen associated with a particular character, the phosphorescent material is applied to the screen in the shape of the character.
  • Another alternative is to provide a movable mask containing a number of different openings each of which openings may be moved into registration with a given sub-area of the tube screen so that when such sub-area is energized by the beam any one of a number of different illuminated images may be produced by positioning any selected one of the mask openings over such sub-area.
  • the device may also be used to draw lines by means of a spot of light movement of which is produced by moving the cathode ray tube and associated parts relative to the photosensitive material.
  • a spot of light movement of which is produced by moving the cathode ray tube and associated parts relative to the photosensitive material.
  • the beam current control 50 is provided with compensating net works to increase the beam intensity as a function of the rate at which the projected image is moved over the photosensitive surface.
  • the displacement commands along the X and Y axes are sensed by an X tachometer or rate sensor 86 and a Y rate sensor 88, respectively.
  • the rate signals from sensors 86 and 88 are supplied to a velocity circuit 90 which combines the two rate signals into a composite velocity representative of the rate at which the X and Y motors translate the tube 12 and the lens system 14 relative to the material M and, hence, the rate at which the image projected onto the material M moves over the photosensitive surface.
  • the velocity signal is appropriately scaled by the circuit 90 and is added to the biasing signal from blanking circuit 70 at summing amplifier 72.
  • the blanking circuit 70 establishes a given control grid or beam intensity which is sufficient for drawing images in the first area 59 of the display screen 42 and for illuminating the openings 61, 61 in the mask when there is no relative movement between the lens system 14 and the photosensitive material M.
  • the velocity signal from circuit 90 adds an additional bias to the intensity signal from the blanking circuit 70 and the combined signals from summing amplifier 72 are applied to the control grid of the cathode ray tube 12 to adjust the beam intensity.
  • the beam deflection control 52 includes a circular scan or circular sweep generator 96 which, upon command from the computer 18, causes the beam in the cathode ray tube to produce a circle at the center 62 of the screen 42.
  • the size of the circle can be adjusted by the sweep voltage so that the width of the exposed strip may be varied.
  • the image of the beam itself at the center 62 of the screen without circular sweep may be employed; however, due to the generally blurred image of a beam on the screen 42, it is generally preferable when a small circular spot is required to employ an opening in the mask 60 to define such spot.
  • An apparatus for selectively exposing a photosensitive surface of an article comprising: generator means for generating an energized beam along a beam axis; radiant energy emitting means located along said beam axis and sensitive to said energized beam for emitting radiant energy from areas thereof impinged upon by said energized beam, said emitting means having discrete first and second areas; means fully uncovering the first area and having a substantially opaque portion overlying one part of the second area and uncovering another part of the second area for defining the shape of an image illuminated by radiant energy from substantially the full extent of the second area; deflector means for deflecting said energized beam from said beam axis over said first and second areas of said emitting means; first control means connected to said generator means and to said deflector means for causing said beam to draw radiant images in the uncovered first area of said emitting means; second control means connected to said generator means and to said deflector means for causing said beam to substantially continuously impinge on the full extent of said second area without impinging on said first
  • An apparatus for selectively exposing a photosensitive surface of an article as defined in claim 1 further including carriage means for moving said projection means relative to said article whereby said radiant images may be projected onto different areas of said photosensitive surface.
  • An apparatus for selectively exposing a photosensitive surface of an article as defined in claim 2 including a support table for said article, said carriage means including a movable carriage translatable over said support table; and wherein said generating means, said radiant energy emitting means, and said projection means are mounted on said movable carriage.
  • An apparatus for selectively exposing a photosensitive surface of an article as defined in claim 4 further characterized by said radiant screen including a plurality of second areas located along the peripheral margin thereof, and said mask overlying all of said second areas and including a plurality of shape defining openings each associated with a respective one of said second areas.
  • An apparatus for exposing graphic characters on a photosensitive surface of an article comprising: a cathode ray tube having a display screen comprised of first and second radiating portions; a mask overlying said second radiating portion of said display screen of said cathode ray tube, said mask having a cutout uncovering a part of said second radiating portion and defining a graphic character; first control means connected to said cathode ray tube to cause the beam of said tube to draw radiant images of graphic characters in said first radiating portion of said display screen; second control means connected to said cathode ray tube to cause said tube to illuminate the part of said second radiating portion of said display screen uncovered by the cutout of said mask whereby a radiant image of said graphic character is produced from said second radiating portion of said display screen; and projection means for projecting the radiant images of the graphic characters from both the first and second areas onto the photosensitive surface of the article.
  • said first control means includes beam deflection means connected to said cathode ray tube.
  • aid second control means includes a raster scan generator connected to said beam deflection means.
  • said first radiating portion of said display screen encompasses the central region of said display screen; said second radiating portion of said display extends along the entire peripheral region of said screen; and said mask overlies said second portion along the entire peripheral region of said screen and has a plurality of cutouts defining a plurality of characters.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Projection-Type Copiers In General (AREA)
  • Dot-Matrix Printers And Others (AREA)
US00136909A 1971-04-23 1971-04-23 Apparatus for selectively exposing a photosensitive surface Expired - Lifetime US3724347A (en)

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US13690971A 1971-04-23 1971-04-23

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US (1) US3724347A (enExample)
JP (1) JPS5221890B1 (enExample)
DE (1) DE2163826C3 (enExample)
FR (1) FR2135004A5 (enExample)
GB (1) GB1381082A (enExample)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027315A (en) * 1975-10-03 1977-05-31 Dunn Instruments, Inc. Multiple image camera
US4240729A (en) * 1977-02-14 1980-12-23 Dunn Instruments, Inc. Multiple image camera
FR2566559A1 (fr) * 1984-06-22 1985-12-27 Benson Sa Machine graphique a tete d'inscription optique
WO1986006876A1 (en) * 1985-05-17 1986-11-20 Pa Consulting Services Limited Optical provision of connections in integrated devices
DE3709724A1 (de) * 1986-03-25 1987-10-01 Fuji Photo Film Co Ltd Verfahren und einrichtung zum bildschirmkopieren zur herstellung einer kopie eines bildeindruckes von einem bildschirm mit buchstaben
US4764880A (en) * 1986-01-09 1988-08-16 Gerber Garment Technology, Inc. Compound plotting apparatus and related method of operation
EP0446909A3 (en) * 1990-03-16 1992-07-08 Stouffer Industries Inc. Custom contact printer for selective visual contact printing
US5317338A (en) * 1991-10-29 1994-05-31 International Business Machines Corporation Visual measurement technique and test pattern for aperture offsets in photoplotters
WO1998031137A1 (en) * 1997-01-13 1998-07-16 Lasergraphics, Inc. Image recorder for computer graphics images

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55132269A (en) * 1979-04-02 1980-10-14 Canon Inc Recording device
GB2323933B (en) * 1997-04-02 2001-09-19 Ian Douglas Eustace Image maker

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322033A (en) * 1965-06-09 1967-05-30 Silverman Daniel Method and apparatus for making and scanning spot patterns
US3330182A (en) * 1965-10-01 1967-07-11 Gerber Scientific Instr Co Device for exposing discrete portions of a photosensitive surface to a variable intensity light beam
US3473455A (en) * 1966-06-30 1969-10-21 Xerox Corp Exposure registration apparatus
US3548713A (en) * 1967-10-10 1970-12-22 Gerber Scientific Instr Co Photo-exposure device using annular light beam
US3610119A (en) * 1969-04-25 1971-10-05 Gerber Scientific Instr Co Photoexposure device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322033A (en) * 1965-06-09 1967-05-30 Silverman Daniel Method and apparatus for making and scanning spot patterns
US3330182A (en) * 1965-10-01 1967-07-11 Gerber Scientific Instr Co Device for exposing discrete portions of a photosensitive surface to a variable intensity light beam
US3473455A (en) * 1966-06-30 1969-10-21 Xerox Corp Exposure registration apparatus
US3548713A (en) * 1967-10-10 1970-12-22 Gerber Scientific Instr Co Photo-exposure device using annular light beam
US3610119A (en) * 1969-04-25 1971-10-05 Gerber Scientific Instr Co Photoexposure device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027315A (en) * 1975-10-03 1977-05-31 Dunn Instruments, Inc. Multiple image camera
US4240729A (en) * 1977-02-14 1980-12-23 Dunn Instruments, Inc. Multiple image camera
FR2566559A1 (fr) * 1984-06-22 1985-12-27 Benson Sa Machine graphique a tete d'inscription optique
WO1986006876A1 (en) * 1985-05-17 1986-11-20 Pa Consulting Services Limited Optical provision of connections in integrated devices
US4764880A (en) * 1986-01-09 1988-08-16 Gerber Garment Technology, Inc. Compound plotting apparatus and related method of operation
DE3709724A1 (de) * 1986-03-25 1987-10-01 Fuji Photo Film Co Ltd Verfahren und einrichtung zum bildschirmkopieren zur herstellung einer kopie eines bildeindruckes von einem bildschirm mit buchstaben
US4876567A (en) * 1986-03-25 1989-10-24 Fuji Photo Film Co., Ltd. CRT printing method and apparatus for making a print of an image with letters
EP0446909A3 (en) * 1990-03-16 1992-07-08 Stouffer Industries Inc. Custom contact printer for selective visual contact printing
US5317338A (en) * 1991-10-29 1994-05-31 International Business Machines Corporation Visual measurement technique and test pattern for aperture offsets in photoplotters
WO1998031137A1 (en) * 1997-01-13 1998-07-16 Lasergraphics, Inc. Image recorder for computer graphics images

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DE2163826B2 (de) 1973-11-15
GB1381082A (en) 1975-01-22
DE2163826A1 (de) 1972-11-16
DE2163826C3 (de) 1974-06-20
FR2135004A5 (enExample) 1972-12-08
JPS5221890B1 (enExample) 1977-06-14

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