The photographic news

• Bandzählung: 12.1868
• Erscheinungsdatum: 1868
• Sprache: Englisch
• Signatur: F 135
• Vorlage: Hochschule für Grafik und Buchkunst Leipzig
• Digitalisat: Hochschule für Grafik und Buchkunst Leipzig
• Digitalisat: SLUB Dresden
• Rechtehinweis: Public Domain Mark 1.0
• URN: urn:nbn:de:bsz:14-db-id1780948042-186800009
• PURL: http://digital.slub-dresden.de/id1780948042-18680000
• OAI: oai:de:slub-dresden:db:id-1780948042-18680000
• Sammlungen: LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
• Sammlungen: Fotografie
• Strukturtyp: Band

• Digitalisat: SLUB Dresden
• Strukturtyp: Ausgabe

July 8, 1868.] THE PHOTOGRAPHIC NEWS. 319 rally is singularly pleasing, producing a quality of textur we have not seen produced by other means, and in large pictures is exceedingly valuable. The specification is as follows :— My invention relates to a process whereby new effects in portrait, landscape, and other subjects are attained which may be used in connection with and as an aid to photography, litho graphy, plate and wood block printing, and in some cases alone, or to give permanence to photographs. The process by which those effects are obtained is as follows : —An outline of the photograph, drawing, or print to be treated is traced on the back thereof, or on a sheet of paper. The picture and paper are placed together on a lithographic stone, wood block, copper, or other plate having on its surface or in the mezzotint, aquatint, machine tint, or other ground, the colour the whole or portion of which it is desired to transfer to the picture; said picture is placed with its face downwards, having the sheet of paper intervening between it and the stone or plate, then, by rubbing, pressure, and burnishing those parts iu the tracing corresponding to the parts required to be left light in the picture, the colour on the stone, block, or plate will be transferred to the sheet of paper intervening between the picture and the stone or plate wherever the pressure or burnishing isapplied. If the traced outline has been made on the sheet of intervening paper the picture must be removed, and registering points used or held so that it can be returned to the exact position it first occupied, the rubbing and burnishing pro cess being applied to the tracing as before, but to the sheet of paper instead of to the back of the picture : for example, if the general colour of a face or sky is required lighter than the rest of the picture, the surface occupied by the tracing of the face or sky is rubbed or stumped so that a portion of the colour on the stone or plate corresponding to the tracing may be trans ferred to the sheet of paper. The high and secondary lights are obtained by burnishing those parts of the tracing which represent the proper position of the required lights, removing the colour from the stone, plate, or block in those parts. By a careful use of the burnisher or pencil used, lights may bo obtained of varied character, either graduated or sudden and sharp. Sheets of paper, cloth, or other fabric to which the colour is transferred, may be used of different textures for dif ferent parts of the same picture according to the effects required. In certain cases I prefer to protect the photograph or other subject by means of gum or chalk to servo as the intervening material on those parts which I wish to be light, the protecting substance or substances being removed by washing or friction after the operation of printing. When as much of the colour is removed from the stone as desired, the sheet of paper is taken away, leaving the stone exposed, when the colour may be still further removed by means of bread or otherwise. The picture is then laid, face downwards, in its proper position on the stone, and passed through the press; when the picture is removed from the press, and while the ink is still wet and manageable, the effect is heightened and refined by means of bread, or an effect may be wholly obtained by the application of bread to wet or par tially dry printing ink. When the photograph is printed on albuminized paper it will be found useful to use a knife or mezzotint scraper to obtain sharp and other lights, and this without disturbing the surface of the paper or albumen. This process may be repeated as often as required, various colours and shades of colour being added at will; as, for instance, the colour of the hair or face may be printed on the picture, for if the stone or plate be charged with a flesh tint, and the colour transferred to the intervening paper or cloth in those parts where it is not required, the picture will consequently, when printed, be left uncoloured in those parts. In colouring photo graphs I may also use a tint engraved on a plate or block, the parts to bo coloured being indicated by tracing on the plate, when the appropriate colour is filled into those parts of the engraved tint, which may then be printed on the photograph with an engraved surface ; the effect on photographs may be further modified by “wiping close " those parts required light in:the photograph. In order to colour numerous copies of the same picture without the repeated use of the sheet of trans ferring paper, the colour may bo permanently removed by scraping out or biting away by means of acid the light parts on the stone, or by burnishing and scraping when a plate is employed, which effects are then to be completed by the appli cation of bread to the wet or partially wet ink. My invention further consists in the use of a glass plate, the surface of which is finely ground to receive a tint similar to that obtained in lithographic printing; or the glass plate may be machine-ruled to receive a tint, when, by placing the picture behind the glass, the effects before described may be obtained with increased facility, and printed on the picture from the glass plate. My invention also consists in transmitting rays through a lens from the object to be coloured on to a lithographic or engraved tint, or on to the paper covering that tint, by which I am enabled to place in proper position on the stone or plate the colours which are to be printed on the picture, or to remove colour in those parts required light when printed. In the case of photographs the rays would be transmitted through the lens from the negative. By the application of oil colour to pho tographic and other pictures their permanence is increased, the coating of oil colour forming a protection against atmospheric and other injurious influences. When applied to photographs the soda used in fixing the prints is neutralized and fixed by the coating of oil colour. A ground may also be obtained with oil colour upon which to work with pencil, chalk, and crayons, or to paint with oil or water colours, and this ground I print on the paper either before or after printing the photograph. If the ground is printed before the photograph the high lights and gradations must be obtained as before described, and the tint used must be one which will not be injuriously affected by the chemicals employed in photographic printing; as, for instance, the combination of black, indian red, and ultramarine, will pro duce such a tint. Where a carbon printed photograph is to be transferred to a ground work, and effect produced by my pro cess, this, of course, is not essential. Pencil and other sketches may also be tet by my process, and have lights and skies readily introduced. Pictures on porcelain may either be wholly or partially printed by my process, and then burnt in as usual. It will also be found useful to charge albuminized or other paper with printing ink, and to obtain effects by the means already described, and then, by the use of a press, or by burnishing, to transfer the colour to the photograph or other work of art, by which means various colours may be applied, and a very delicate effect produced. In photography a print the reverse of the one to be treated may be used, when all the parts may be tinted in this way at leisure and with the greatest precision, while the application of bread to the wet ink will be found to give effects of the greatest value. Having described the nature of my invention, and the man ner of performing the same, I declare that what I claim as my invention to be protected by the herein-before in part recited letters patent is,— First. Tinting or colouring photographs, engravings, water colour and other drawings, or porcelain, by the several means and processes herein described. Secondly. I claim the use in the above processes of an inter vening material or materials upon which is to be transferred, by means of pressure, rubbing, and burnishing, portions of colour not required in the finished work of art, as and for the purposes herein-before described. Thirdly. I also claim obtaining an entirely novel effect in the process of tinting or colouring of my invention by the employment of bread in the manner and for the purpose described. M. CARRIER’S SENSITIVE PAPER. The Commission nominated by the Photographic Society of Marseilles, and consisting of MM. Gobert, Jeanrenaud, Paul Gaillard, and Civiale, hove just made their report upon the keeping qualities, &c., of a new sensitive paper prepared by M. Carrier. The mode of preparing it is not stated, but it is believed to be a modification of the collodio-chloride pro cess. The report is signed by M. Gobert on behalf of his confreres, and is as follows :— “At a meeting of the Society held on the 7th February last, M. Carrier submitted to the inspection of the members an unalterable sensitive paper, suitable for the production of positive prints, of which he presented to the Society several specimens. We have now to report the result of experiments we have made with this paper. “ The prepared paper has been preserved in a sealed packet, in the chest of the Society, from the 11th February until the 27th April (75 days), care being taken to keep