Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1891-03-12
HOW PLATES ARE MADE.
WHAT sTEasorYpiNe IS AND HOW
IT IS ACCOMPLISHED.

u Enable. Large Paper. to Print pun-
dred. Of Thousands Of copie. In a RE-
markabiy short Time--The rapier Ma.
she aud the Clay Process.
wha, is s,ercotyplng and what are its
sdvnn,aeeaf
The common idea Of s,ercotyping paper
Va that the typo Ia put through some pro.
rees Tor the purpose Of facilitating the
printing The fact Is, stercotypng IA little
more than duplicating the type. The
forms hic reproduced In one solid piece,
hence tue word, stereotype, solid copy.
The types are used for patterns only.
while the printing Is done entirely from tho
plates. Thus the type IL subjected TO very
little wear, aud by the use Of large mum.
Der Of plates the papers arr printed with
great rnpldity. II type was directly uss,l
70 print The Sun, Herald. or World. \ nov
dress would he required every day. THIS
wear and tear Of two or three bundled
thousand impressions would destroy the
best type Ia the world.
Not only that, but In order to get such a
paper A. The Sunday Sun. Herald or World
printed from the type az rapidly as from
plates u would require all the composition.
1hcre aro few presses In uze on which
the pnpors are printed directly from tho
type In the form Of n curve. These are
called type rcsolver." or type webs."
They nrc very complicated aud are fed by
web or roll Of paper, the same ~ per.
fecting press, printing both sides The
pages are made up In tho form Of turtles,
aud, Of course, the press carries only one
sct alta time. While these presses do
fairly rapid work, they cannot compare
with the pcrfccring presses. What Is
gained by eliminating the work Of sterro.
typing Is lost by the wear Of the type, he.
sides, for papers Of large circulation they
arr Of no use whatever.
PREPARING TiE aArRix.
Hy newspaper stereotyping ! mean tho
only modern way Of producing stereotype
plates Tor newspaper Use, There Is practi.
nally only one process In use, aud that Is
the pnpitf machc process. The old plaster
OF paris and clay processes are not now
used except In rarc eases whore some spe.
eial result Is aimed at, Tho old ways arc
too slow for newspapers, aud have been
superseded by electro,yplng for book work.
Elcctroiyping furnishes copper faced
plate and perfectly rrproduccs fine cngrav.
ing-, s,creotyplng by whatever process
eau do neither
The only place to my knowledge where
either Of the old processes Is now used 10
any extent In this country il the American
Press association In this city Al lts
pages. except tho news pages, are fist
stcrrotypcd by the clay process. by this
means they obtain one deep plate, from
which thereafter large number Of mold.
arr taken by the papier-macho process
The latter, now 30 universally employed,
was Invented some forty,fvc years ago In
Paris This pruccss Il practically divided
Into four parts-matrix making, modlny
casting aud finishing.
MatriS making l. simply preparing the
papicr maohc. aud must h. done In advance
OF the process proper The paper used l. Of
two kinds, bloitlng and tissue. manufact
urcd expressly for stercotyping. The blot.
ting paper IL first dampcncd properly, and
the matrlS 80 called II usually made 10y
pasiing together two sheets OF plotting for
back aud four sheets 81 tissue for a face.
The tissues are carefully smoothed down,
either by hand or with n roller The paste
used II Of special kind, aud l. prepared by
the s,crooiypca before he bogius his days
work