Documenti “trasparenti"

Manifattura, restauro e conservazione della carta da lucido

Fin dal XIV secolo è documentata la presenza di ricette a base di olii e resine che rendevano la carta semitrasparente allo scopo di utilizzarla per il ricalco. Solo nel XIX secolo, con l’avvento della produzione della carta su scala industriale, si affinò la manifattura di carta dedicata all’uso del ricalco mediante processi meccanici di pressatura e calandratura che ne favorivano la trasparentizzazione.

Fu con la scoperta dei primi procedimenti di riproduzione fotomeccanica che la carta da lucido venne utilizzata principalmente da studi di architettura e di ingegneria.
Presso gli archivi e le biblioteche sono conservati moltissimi documenti redatti su questo supporto, la cui conservazione e gestione risulta molto complessa.

Il convegno, che si terrà a Trento il prossimo 25 ottobre presso il Polo Culturale Diocesano Vigilianum, vuole fare il punto sullo stato dell’arte in relazione a restauro, conservazione e gestione di tale patrimonio, ricorrendo al contributo dei maggiori studiosi e dei principali enti preposti alla conservazione.

L'iniziativa è organizzata dalla Provincia Autonoma di Trento, Soprintendenza per i Beni culturali, Ufficio Beni archivistici, librari e Archivio provinciale con la collaborazione del Polo Culturale Diocesano Vigilianum.

redazione

05/10/2017

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eZ debug

Clear cache:

Quick settings:

Timing: Apr 06 2026 18:17:33
Script start
Timing: Apr 06 2026 18:17:33
Module start 'layout'
Timing: Apr 06 2026 18:17:33
Module start 'content'
Timing: Apr 06 2026 18:17:33
Module end 'content'
Debug: ezpI18n::translateText Apr 06 2026 18:17:33
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'contentclassmanager'
Debug: ezpI18n::translateText Apr 06 2026 18:17:33
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'Apps'
Debug: ezpI18n::translateText Apr 06 2026 18:17:33
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'Amministrazione Trasparente'
Debug: ezpI18n::translateText Apr 06 2026 18:17:33
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'eZTags'
Error: eZTemplate @ extension/ocbootstrap/design/ocbootstrap/templates/canonical_link.tpl:1[0] Apr 06 2026 18:17:33
Unknown template variable 'pagedata' in namespace ''
Error: eZTemplate @ extension/ocbootstrap/design/ocbootstrap/templates/canonical_link.tpl:1[0] Apr 06 2026 18:17:33
Unknown template variable 'pagedata' in namespace ''
Timing: Apr 06 2026 18:17:33
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Peak memory usage27,392.0000 KB
Database Queries100

Timing points:

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Ini load
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Check MTime0.00330.6179360.0001
PostgreSQL Cluster
DB queries0.01452.7207160.0009
Postgresql Total
Database connection0.00360.675210.0036
Postgresql queries0.210439.39751000.0021
Looping result0.00000.000000.0000
MySQL Cluster
DFS operations0.00040.068510.0004
TS translator
TS init0.00751.409260.0013
TS cache load0.00490.911560.0008
TS context load0.00330.611960.0005
Template Total0.398774.630.1329
Template load0.110120.616530.0367
String conversion in template resource0.00050.0971220.0000
Template parser: create text elements0.01262.3505220.0006
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Template processing0.288554.013530.0962
states
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state_identifier_array0.00260.481020.0013
Override
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Sytem overhead
Fetch class attribute can translate value0.00390.729110.0039
Fetch class attribute name0.00270.511040.0007
XML
Image XML parsing0.00821.527910.0082
class_abstraction
Instantiating content class attribute0.00010.010040.0000
General
String conversion0.00020.0307240.0000
Note: percentages do not add up to 100% because some accumulators overlap

CSS/JS files loaded with "ezjscPacker" during request:

CacheTypePacklevelSourceFiles
CSS0design/base/stylesheets/core.css
JS0extension/ocmaps/design/standard/javascript/leaflet.js
extension/ocbootstrap/design/ocbootstrap/javascript/insertmedia.js

Templates used to render the page:

UsageRequested templateTemplateTemplate loadedEditOverride
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1atoms/image.tpl<No override>extension/oc_tcu/design/tcu/templates/atoms/image.tplEdit templateOverride template
1content/datatype/view/ezimage.tpl<No override>extension/oc_tcu/design/tcu/templates/content/datatype/view/ezimage.tplEdit templateOverride template
1content/datatype/view/ezxmltags/line.tpl<No override>design/standard/templates/content/datatype/view/ezxmltags/line.tplEdit templateOverride template
1content/datatype/view/ezxmltags/embed.tplembed/file.tplextension/ocbootstrap/design/ocbootstrap/override/templates/embed/file.tplEdit templateOverride template
1content/datatype/view/ezstring.tpl<No override>design/standard/templates/content/datatype/view/ezstring.tplEdit templateOverride template
1parts/social_buttons.tpl<No override>extension/oc_tcu/design/tcu/templates/parts/social_buttons.tplEdit templateOverride template
1atoms/meta.tpl<No override>extension/oc_tcu/design/tcu/templates/atoms/meta.tplEdit templateOverride template
1print_pagelayout.tpl<No override>design/standard/templates/print_pagelayout.tplEdit templateOverride template
1page_head.tpl<No override>extension/oc_tcu/design/tcu/templates/page_head.tplEdit templateOverride template
1parts/opengraph_persistent.tpl<No override>extension/ngopengraph/design/standard/templates/parts/opengraph_persistent.tplEdit templateOverride template
1canonical_link.tpl<No override>extension/ocbootstrap/design/ocbootstrap/templates/canonical_link.tplEdit templateOverride template
1link.tpl<No override>extension/oc_tcu/design/tcu/templates/link.tplEdit templateOverride template
1page_mainarea.tpl<No override>design/standard/templates/page_mainarea.tplEdit templateOverride template
1page_warning.tpl<No override>design/standard/templates/page_warning.tplEdit templateOverride template
1page_copyright.tpl<No override>design/standard/templates/page_copyright.tplEdit templateOverride template
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1setup/clear_cache.tpl<No override>design/standard/templates/setup/clear_cache.tplEdit templateOverride template
1setup/quick_settings.tpl<No override>design/standard/templates/setup/quick_settings.tplEdit templateOverride template
 Number of times templates used: 26
 Number of unique templates used: 22

Time used to render debug report: 0.0008 secs

DEV 192.168.105.41