Classifications

• • 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
  • G03B27/00—Photographic printing apparatus
  • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
  • G03B27/52—Details
  • G03B27/62—Holders for the original
  • G03B27/6207—Holders for the original in copying cameras
  • G03B27/6214—Copy boards

Definitions

• the present invention concerns a holding and layout device intended for use in process cameras, especially for large colour pictures and maps, which consists of surfaces in frames to be placed against one another, of which one is a glass sheet for showing the picture to the lens, and which includes a frame member round which the frames are free to turn round a common centre of gravity from a vertical to a horizontal position, which correspond to the photographing and layout position.
• the most common holder that operates in a vertical position is the so-called lift foil holder.
• the original picture is placed on the baseboard first of all slightly under the foil roll, which is attached by an axle to the lift device.
• the foil roll in the lift is then drawn over the picture so that the original picture is covered by the foil coming from the roll.
• the foil is pressed against the original picture by sucking out the air between the foil and the base ⁇ board by means of a system built into the apparatus.
• the baseboardis of glass in the case of an original composed of several original pictures one upon the other the layout of the element picture on the baseboard is extremely diffi ⁇ cult, because the positioning is hard to maintain.
• Figure 1 A holder and layout device for original copy, front view, in photographing position.
• FIG. 2 The holder and layout device, side view, layout position.
• the holder can be moved along the rails 8 by means of the wheels in the frame 6.
• the guides can also be in the ceiling, in which case the floor is completely level.
• a distance meter can be connected to the apparatus, which is linked directly to the transfer device.
• the support frame 4 of the glass sheet 2 is connected by means of the axle 7 to the frame 6 and the support frame 3 of the matt membrane » is hinged to this frame 4- In the photographing position the frames 3 and 4 are against one another and vertical, in which case the order of the surfaces is as follows when viewed from the lens, i.e. from the
• the scratchless ground glass sheet 2 is towards the lens, and that the polyester foil 1 is, according to the invention, light diffusing and not clear.
• a matt membrane effectively removes from the copy scratches, dirt,
• the apparatus includes photographic lights 9, with which the original can be lit from the front or through-lit from the back by turning the support arm of the lights to a corresponding position.
• the basic solution used in an apparatus in accordance with the invention uses frames 3 and 4 that tilt to a horizontal position.
• the upper frame is raised and the glass sheet 2 supported by frame 4 forms an effective layout table.
• the layout table also becomes a light-table, in which case the layout and positioning of original pictures becomes easy, Figure 2.
• the original or originals are placed against glass sheet 2 and then frame 3 is lowered so that the polyester foil lies simultan ⁇ eously over the entire picture and the positioning is retained precisely.
• the shell of the bearing supporting axle 7 in frame 6 is adjustable slightly forwards and backwards horizontally by means of a fine adjustment screw.
• the stop device 11 determines the normal position of the vertical surface of frames 3 and 4 « This can, however, be adjusted horizontally by means of another fine adjustment screw, and the position of frames 3 and 4 can diverge slightly from the vertical. Both fine adjustment screws can be equipped with drive motors and connected to an electronic device in order to automate adjustment.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Holders For Sensitive Materials And Originals (AREA)
• Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
• Projection-Type Copiers In General (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8521994

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (2)

Citations (5)

• 1986
  • 1986-01-21 FI FI860262A patent/FI80349C/fi not_active IP Right Cessation
• 1987
  • 1987-01-19 WO PCT/FI1987/000007 patent/WO1987004532A1/en not_active Ceased
  • 1987-01-19 CH CH3760/87A patent/CH675918A5/de not_active IP Right Cessation
  • 1987-01-19 AU AU68967/87A patent/AU6896787A/en not_active Abandoned
  • 1987-09-18 DK DK489887A patent/DK489887A/da not_active Application Discontinuation

Patent Citations (5)

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