CN101774322B

CN101774322B - Method for etching photo on marble

Info

Publication number: CN101774322B
Application number: CN2010100391990A
Authority: CN
Inventors: 金立民; 李进云; 梅红清
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-22
Filing date: 2010-01-22
Publication date: 2012-11-14
Anticipated expiration: 2030-01-22
Also published as: CN101774322A

Abstract

The invention relates to a method for etching a photo on marble, which can originally reflect an etched object and comprises the following steps of: outputting an image produced by scanning a photo which needs to be manufactured into a film with 25 to 40 meshes of dot grid; dissolving shell-lac by absolute ethyl alcohol (C2H5OH), and then evenly mixing to obtain a shell-lac photosensitive resist; evenly coating the photosensitive resist on the surface of the marble, on which the photo needs to be etched; tightly sticking the film on the surface of the marble; irradiating for 2 min under ultraviolet lamp light; then developing with alcohol until the image of the film is developed on the surface of the marble; printing off stone with the image, and etching by adopting corrosive liquid; after etching, washing the photosensitive resist on the stone by weak base water (NaOH and H2O) prepared in the volume ratio of 1:100, and then washing the residual base water by clear water; spraying pigments to the etched surface of the marble; after the pigments are completely dried, lightly rubbing out the convex pigments by a millstone; and when the convex pigments are completely rubbed out and only the pigments on a concave surface are left, obtaining a clear black-and-white photo.

Description

The method of etching photo on marble

Technical field

The present invention relates to a kind of on marble the method for etching photo.

Background technology

How going down the permanent preservation of people's photo, it is real current that following people can be seen, has much human to move brains in this respect.Be the people who goes in the cemetery and all can have found some omnifarious photos, had photo is imprinted on and burn till on the porcelain facing; Also have and adopt modern laser to be up at Mo Shishang; Using lapicide and painter in addition combines and makes " shadow statue ".And the present vitrotype that occurs can be preserved in wind, Exposure to Sunlight, the environment that drenches with rain and can't investigate how long temporarily, but it only in one plane manifests, and does not possess the connotation of " carve upright stone tablet and rein in stone " all the time.The photo of being up at Mo Shishang for laser; Undeniable its precision is very high, but the black stone that it still just makes stone surface modification color form becomes shadow, as for skillful craftsman hand-made " shadow carving "; It can not break away from the historical background of drawing, recorder's picture exactly all the time.

Through the query and search data, the invention that before the application puts forward, also had some to relate to the similar technique field, the technology that for example has is to handle photo through computer to become bulk; Etching in the approximate drawing of the portrait of imaging; Be imprinted on then on the building stones face, the mode of engraving forms portrait by hand again, though this portrait has possessed the connotation of " carve upright stone tablet and rein in stone "; But it can only make portrait profile, can not reflect real photo effect completely.

The application that also has traditional silk-screen or copying or etching technique, but they only rest in the scope of word and picture, these preparation methods can only be handled picture and text some bulks or wire.

Even some technology are arranged, can only set up in theory, and in the actual fabrication process, make to come out.Because employed gelatine photoresists and PVA (polyvinyl alcohol) if photoresists without the high-temperature baking of specified temp; Be unable to undergo the corrosion of etchant solution at all; So do not play protection; And if the building stones that will scribble photoresists are through overbaking, then building stones will become architectural lime, meet water and then change.Therefore at first its manual drawing base map lacks precision, moreover has the not corrosion resistance of photoresists and the contradiction that building stones can not toast.

Summary of the invention

The present invention provide a kind of on marble the method for etching photo, can present the effect of photo like clockwork, effectively overcome the shortcoming of above-mentioned prior art, have the meaning of " carve upright stone tablet and rein in stone ".

The present invention adopts traditional etching technique, can reflect to the grand master pattern former state etched object.Therefore, can make no matter what the content on the photo is.Etching is intermolecular motion to the engraving of workpiece, can not produce to impact and cause workpiece to damage.The invention solves the problem that the shade of grey in the photo can not accurately separate; Etching has better stereoeffect: if will let the dark local etching part of light more on the stone face of white; Otherwise then lack; And etched place is concavity on the stone face, fills colored pigment more therein, so just can form the white photograph effect.

The present invention also has one to adopt the shellac photoresists to carry out copying with maximum not being both of prior art.Because the characteristic of shellac is to toast just corrosion-resistantly, can guarantee that so just building stones need not receive the damage of high-temperature baking.On the building stones of copying, there is the local air-dry back of shellac photoresists just corrosion-resistant, obtained protection through behind the corrosive liquid again, therefore be convex.If these places have just presented the white of stone itself on white building stones.Like etching on Mo Shi, then should handle conversely.

Description of drawings

Fig. 1-the 5th, according to five stone imageries of processing finished product that the present invention makes, personage wherein all is inventors of the application's patent.

The specific embodiment

Do further to describe in detail in the face of technological process of the present invention down.

1, glue sheet:

The photo of required making is placed in the scanner scans; The image that scans is done some stickups, sheared, adds simple process such as lace in softwares of Photoshop or CorelDRAW; Save as " TIF " formatted file, in " upright grating image processor ", hang the film of net output 25～40 order site versions then.

2, copying:

With shellac with absolute ethyl alcohol (C ₂H ₅OH) after the dissolving, be to add potassium bichromate (Cr at 30: 1 by mass ratio ₂K ₂O ₇) or ammonium dichromate ((NH4) ₂Cr ₂O ₇) mix and be the shellac photoresists, then photoresists being evenly coated on the stone face, gluing has two kinds of methods: one, spraying process is that photoresists are packed in the spray gun, carries spraying through Compressed Gas; Two, centrifugal rubbing method is earlier photoresists to be drenched on the stone face and it is inserted centrifuge rotation 3-5 promptly to be coated with evenly second.

The building stones that have been coated with photoresists are placed on lucifuge, drying, ventilation and temperature are no more than in 40 ℃ the environment, behind the natural air drying film closely is attached on the stone face, the most handy glass is pushed down.Irradiation is 2 minutes under ultraviolet light, can take out building stones after the exposure, puts into concentration and be in the alcohol 75% or more immersion 2 hours, and then washes to the image of film with alcohol and on the stone face, to develop, its natural air drying of relief; If do not see image; Can in alcohol, add red acid pigment by the mass ratio by 1000: 1; Whether can help inspection to develop so complete; If situation about can not develop is fully arranged then need remove surplus glue, specific practice is to scrub gently with very soft hairbrush, until removing surplus glue fully.

3, etching:

Solarization is printed on the building stones of image, adopts corrosive liquid to carry out etching.Corrosive liquid by volume ratio is hydrochloric acid (HCL)+hydrofluoric acid (HF)+water (H ₂O)=preparation in 15: 1: 50.Have the position of shellac photoresists protections just can not be corroded to, and the place that not have to protect just fall in, and forms certain degree of depth after being corroded.

Corrosion process has three kinds of methods: 1. place the etching machine that splashes to corrode; 2. place etching tank to corrode at the corrosive liquid of trickling; 3. operating personnel hold wooden dipper pouring with hand and drench and corrode.

After etching finished, using by volume, ratio was the weak base water (NaOH+H of preparation in 1: 100 ₂O) photoresists on the building stones are cleaned, with clear water the buck of remnants is cleaned again.

4, filler pigment:

On the good stone face of etching, spray pigment, treat that it parches fully after, grind off the pigment of convex surface gently with grinding stone; Dash with clear water simultaneously and drench; When the pigment of projection is ground off fully, when only staying the pigment on the concave surface, width of cloth black-and-white photograph clearly will be presented at the moment.

The color of pigment is not limit, and is advisable producing contrast with the marble color, generally adopts the non-fading pigment of sun-proof, can adopt stone coating on sale on the market yet.

If run into the especially big building stones of processing, when inconvenient alcohol develops, adopt the way of silk-screen to protect, be about to image to be made and process the silk screen version, to protect on the stone face with anticorrosion erodibility material again, other manufacturing process is constant.

If with black stone etching, because of the place of etching is canescence, thereby the part of white on the photo corroded, without filler pigment, still can demonstrate clear photograph, like Fig. 3.

Claims

1. the method for an etching photo on marble is characterized in that step is following:

(1), glue sheet:

Image with the photo scanning of required making goes out saves as " TIF " formatted file, in " upright grating image processor ", hangs the film of net output 25～40 order site versions then;

(2), copying:

With shellac with absolute ethyl alcohol (C ₂H ₅OH) after the dissolving, be that 30:1 adds potassium bichromate (Cr by mass ratio ₂K ₂O ₇) or ammonium dichromate ((NH4) ₂Cr ₂O ₇), being mixed obtains the shellac photoresists, and photoresists are evenly coated in to be needed on the marble on the stone of the etching photo face; The building stones that have been coated with photoresists are placed on lucifuge, drying, ventilation and temperature are no more than in 40 ℃ the environment, behind the natural air drying film closely is attached on the stone face, irradiation is 2 minutes under ultraviolet light; Can take out building stones after the exposure; Put into concentration and be in the alcohol more than 75% and soaked 2 hours, and then wash to the image of film with alcohol and on the stone face, to develop natural air drying;

(3), etching:

Solarization is printed on the building stones of image, adopts corrosive liquid to carry out etching, and said corrosive liquid by volume ratio is hydrochloric acid (HCL): hydrofluoric acid (HF): water (H ₂O)=the 15:1:50 preparation; Have the position of shellac photoresists protections can not be corroded to, and the place that not have to protect just fall in, and forms certain degree of depth after being corroded; After the etching, use ratio by volume the photoresists on the building stones to be cleaned, with clear water the buck of remnants is cleaned again as the weak base water of 1:100 preparation;

(4), filler pigment:

On the stone face after the etching, spray pigment, treat that it parches fully after, grind off the pigment of convex surface gently with grinding stone, dash with clear water simultaneously and drench, when the pigment of projection is ground off fully, when only staying the pigment on the concave surface, promptly obtain width of cloth black-and-white photograph clearly.

2. as claimed in claim 1 a kind of on marble the method for etching photo, it is characterized in that: being coated with photoresists on the stone face of etching photo has spraying process or centrifugal rubbing method.

3. as claimed in claim 1 a kind of on marble the method for etching photo, it is characterized in that: carrying out etching with corrosive liquid has three kinds of methods: 1. the stone face places the etching machine that splashes to corrode; 2. the stone face places etching tank to corrode at the corrosive liquid of trickling; 3. operating personnel hold wooden dipper pouring with hand and drench the stone face and corrode.