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: Jun 22 2026 23:55:31
Script start
Timing: Jun 22 2026 23:55:31
Module start 'layout'
Timing: Jun 22 2026 23:55:31
Module start 'content'
Timing: Jun 22 2026 23:55:32
Module end 'content'
Debug: ezpI18n::translateText Jun 22 2026 23:55:32
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'contentclassmanager'
Debug: ezpI18n::translateText Jun 22 2026 23:55:32
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'Apps'
Debug: ezpI18n::translateText Jun 22 2026 23:55:32
Missing translation for message in context: 'kernel/navigationpart' with comment: 'Navigation part'. The untranslated message is: 'Amministrazione Trasparente'
Debug: ezpI18n::translateText Jun 22 2026 23:55:32
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] Jun 22 2026 23:55:32
Unknown template variable 'pagedata' in namespace ''
Error: eZTemplate @ extension/ocbootstrap/design/ocbootstrap/templates/canonical_link.tpl:1[0] Jun 22 2026 23:55:32
Unknown template variable 'pagedata' in namespace ''
Timing: Jun 22 2026 23:55:32
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Peak memory usage27,392.0000 KB
Database Queries100

Timing points:

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Module start 'layout' 0.04910.0144 6,514.8594677.4531
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Ini load
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Check MTime0.00400.6567360.0001
PostgreSQL Cluster
DB queries0.01572.5513160.0010
Postgresql Total
Database connection0.00961.565810.0096
Postgresql queries0.236438.36661000.0024
Looping result0.00000.000000.0000
MySQL Cluster
DFS operations0.00040.060410.0004
TS translator
TS init0.00951.546660.0016
TS cache load0.00550.894160.0009
TS context load0.00340.544960.0006
Template Total0.462175.030.1540
Template load0.147723.965230.0492
String conversion in template resource0.00050.0868220.0000
Template parser: create text elements0.01392.2554220.0006
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Template processing0.314451.025230.1048
states
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state_identifier_array0.00200.332220.0010
Override
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Sytem overhead
Fetch class attribute can translate value0.00400.647610.0040
Fetch class attribute name0.00280.446640.0007
XML
Image XML parsing0.00841.362010.0084
class_abstraction
Instantiating content class attribute0.00010.010240.0000
General
String conversion0.00020.0272240.0000
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
1node/view/full.tplfull/article.tplextension/oc_tcu/design/tcu/override/templates/full/article.tplEdit templateOverride template
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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
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 Number of unique templates used: 22

Time used to render debug report: 0.0008 secs

DEV 192.168.105.41