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ALOIS SENEFELDER (1771-1834)

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Originally appearing in Volume V24, Page 639 of the 1911 Encyclopedia Britannica.
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ALOIS See also:

SENEFELDER (1771-1834)  , See also:German inventor of See also:lithography, was See also:born at See also:Munich on the 6th of See also:November 1771, his See also:father See also:Peter being an actor at the See also:Theatre Royal . Owing to the See also:death of his father he was unable to continue his legal studies at the university of See also:Ingolstadt, and tried to support himself as a performer and author, but without success . In See also:order to accelerate the publication of one of his See also:works, he frequently spent whole days in the See also:printing See also:office, and found the See also:process of printing so See also:simple that he conceived the See also:idea of purchasing a small printing See also:press, thus enabling himself to See also:print and publish his own compositions . Unable to pay for the See also:engraving of his compositions, he attempted to engrave them himself . He made numerous experiments with little success; tools and skill were alike wanting . See also:Copper-plates were expensive, and the want of a sufficient number entailed the tedious process of grinding and polishing afresh those he had used . About this See also:period his See also:attention was accidentally directed to a See also:fine piece of Kellheim See also:stone which he had See also:purchased for the purpose of grinding his See also:ink . His first idea was to use it merely for practice in his exercises in See also:writing backwards, the ease with which the stone could be ground and polished afresh being the See also:chief inducement . While he was engaged one See also:day in polishing a stone slab on which to continue his exercises, his See also:mother entered the See also:room and desired him to write 1 The. See also:convention, under the leadership of See also:Lucretia See also:Mott and See also:Elizabeth Cady See also:Stanton, adopted a " See also:Declaration of Sentiments " modelled after the See also:American Declaration of See also:Independence, and resolved " that it is the See also:duty of the See also:women of this See also:country to secure to themselves their sacred right to the elective See also:franchise," and " that the same amount of virtue, delicacy and refinement of behaviour that is required of woman in the social See also:state should also be required of See also:man, and the same transgressions should be visited with equal severity on both man and woman." her a See also:bill for the washer-woman, who was waiting for the See also:linen . Neither See also:paper nor ink being at See also:hand, the bill was written on the stone he had just polished . The ink used was composed of See also:wax, See also:soap and See also:lamp-See also:black . Some See also:time afterwards, when about to wipe the writing from the stone, the idea all at once struck him to try the effect of biting the stone with aqua fortis .

Surrounding the stone with a border of wax, he covered its See also:

surface with a mixture of one See also:part of aqua fortis and ten parts of See also:water . The result of the experiment was that at the end of five minutes he found the writing elevated about the tenth part of a See also:line (T v in.) . He then proceeded to apply the printing ink to the stone, using at first a See also:common printer's See also:ball, but soon found that a thin piece of See also:board covered with fine See also:cloth answered better, communicating the ink more equally . He was able to take satisfactory impressions, and, the method of printing being new, he hoped to obtain a patent for it, or even some assistance from the See also:government . For years See also:Senefelder continued his experiments, until the See also:art not only became simplified, but reached a high degree of excellence in his hands . In later years the See also:king of See also:Bavaria settled a handsome See also:pension on Senefelder . He died at Munich in 1834, having lived to see his invention brought to See also:comparative perfection .

End of Article: ALOIS SENEFELDER (1771-1834)
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