Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
  • B44C1/22—Removing surface-material, e.g. by engraving, by etching
  • B44C1/225—Removing surface-material, e.g. by engraving, by etching by engraving

Definitions

• the present invention relates to the field of etching on a hard material and more particularly on rock substrates which will be conventionally called “supports" in the context of the present invention.
• the invention relates more precisely to the engraving on the surface of a support, of a design for decorative use or of instructions "in relief in savings size”; reproduction process where the so-called “clear” areas of the drawing are hollowed out and where the areas which must come in "shadow” are spared.
• a first evolution of this classic engraving technique is the so-called "sandblasting" technique.
• This technique uses a mask covering the surface of said support to be decorated to protect the shadow areas of the drawing to be reproduced, from the stripping effect of the sandblast which wears out the unprotected parts.
• the parts protected by said mask define on the surface of the support, the shadow areas and the unprotected parts define the light areas.
• the method of reproduction by engraving on stone of the invention offers a great advantage insofar as the contours of the above geometric unitary patterns can be obtained by industrial techniques particularly indicated for mass production.
• the method of reproduction by etching of the invention therefore consists in tracing hollowed out on the surface of said support, lines from my era to the subdivided surface draw a grid of small squares, small rectangles, small triangles, etc. Then, using well-known wear techniques, by the engraver (diamond, sandblaster, manually, etc ...), remove the squares, rectangles or triangles corresponding to the light areas of the design for decorative use to leave room on the surface of said support the squares, rectangles or triangles marking the shaded areas.
• the tracing operation of the lines can be mechanized by a disc cutter whose different displacements parallel to the surface of the support on the one hand, and whose penetration depth of the disc on the other hand, are controlled, even automatically chained, according to pre-established programs of computer control.
• the preset program makes it possible to configure the subdivision of the geometric unitary patterns according to data recorded by the engraver.
• an automatic adjustment of the penetration depth of the cutter disc in the hard material of the support has the great advantage of being able to subdivide into geometric unitary patterns, both the flat surface and the curved surface of the support on which it evolves. the disc debtor.
• the operation can also be mechanized.
• the sandblasting technique will preferably be used.
• the frame of the geometric unitary patterns will be obtained by the raised parts which will be circumscribed around holes dug in the shape of a circle, by drilling or by any other equivalent technique leading to the same result. It then suffices to level off the raised parts which will define the light areas of the drawing so that the remaining non-leveled raised parts will delimit the geometric unitary patterns of the shadow areas.
• the reproduction of a design for decorative use on the surface of a block of granite for example, according to the engraving method of the invention can be akin to the analytical reproduction of an image by points, a well-known technique. in the field of IT and printing.
• the advantage of the invention lies in the fact that this point technique is used in three dimensions. Consequently, the "light-shadow” constracte, at the base of any design for decorative use, is amplified by the lighting which leaves in the shadow two or three of the four side faces of each cube of geometric unitary patterns when these are squares. Therefore, if the light source is subjected to a precise trajectory which is the case of the sun, the "shadow-light” contrast modifies the visual perception of the image of the drawing reproduced according to the engraving method of the invention. Indeed, the path of the sun between sunrise and sunset changes the shaded areas.
• Another advantage of the invention lies in the fact that nuances can be given for the same design with the etching process of the invention.
• the depth of the recesses will also be adapted to the dimensions of the surface of the decorative unitary patterns to play on the lateral faces of said shading patterns.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Apparatus For Radiation Diagnosis (AREA)
• Processing Of Stones Or Stones Resemblance Materials (AREA)
• Luminescent Compositions (AREA)
• Analysing Materials By The Use Of Radiation (AREA)
• Adornments (AREA)
• Printing Methods (AREA)
• Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
• Mechanical Treatment Of Semiconductor (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9397977

Family Applications (1)

Country Status (5)

Cited By (2)

Citations (3)

• 1990
  • 1990-06-14 FR FR9007966A patent/FR2663263B1/fr not_active Expired - Lifetime
• 1991
  • 1991-06-12 CA CA002044446A patent/CA2044446A1/fr not_active Abandoned
  • 1991-06-14 EP EP91870093A patent/EP0462097B1/de not_active Expired - Lifetime
  • 1991-06-14 DE DE69106230T patent/DE69106230T2/de not_active Expired - Fee Related
  • 1991-06-14 AT AT91870093T patent/ATE116215T1/de not_active IP Right Cessation

Patent Citations (3)

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