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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES( photomechanical processes for producing printing surfaces G03F; photoelectrical processes for producing printing surfaces G03G )
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Forme preparation
.
{
the relief or intaglio pattern being obtained by imagewise deposition of a liquid, e.g. by an ink jet
}
.
{
the relief or intaglio pattern being obtained by abrasive means, e.g. by sandblasting
}
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B41C 1/02
.
Engraving ; Heads therefor( recording on record carriers, heads therefor G11B )
B41C 1/025
. .
{
characterised by means for the liquid etching of substrates for the manufacturing of relief or intaglio printing forms, already provided with resist pattern
}
NOTE
-
Attention is drawn to the title of class B41 and to subclass H04N , in particular to the Notes following the title of that subclass and to the group H04N 1/00

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B41C 1/04
. .
using heads controlled by an electric information signal
B41C 1/045
. . .
Mechanical engraving heads
B41C 1/05
. . .
Heat-generating engraving heads, e.g. laser beam, electron beam
NOTE
-
The fabrication of lithographic forms, screen printing forms or stencils with a laser beam or another high energetic radiation beam is not considered as involving an engraving. The preparation of such forms is covered by B41C 1/10 and B41C 1/14

B41C 1/055
.
Thermographic processes for producing printing formes
{
e.g. with a thermal print head
}
( B41C 1/02 takes precedence;
{
fabrication of relief or intaglio plates by ablative recording with a laser beam B41C 1/05 ; production of lithographic forms B41C 1/10 ; producing of screen printing forms or stencils B41C 1/14
}
)
.
Transferring( B41C 1/10 , B41C 1/18 take precedence )
B41C 1/08
.
by embossing, e.g. with a typewriter( typewriters adapted therefor B41J 3/38 )
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.
for lithographic printing ; Master sheets for transferring a lithographic image to the forme
{
chemical or electrical pretreatment B41N 3/03
}
( neutralising or similar differentiation treatments of lithographic printing formes B41N 3/08 )
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. .
{
by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on the press exposure or on the press development, e.g. by the fountain of photolithographic materials
}
. . .
{
characterised by structural details, e.g. protective layers, backcoat layers, several imaging layers( B41N 3/036 takes precedence )
}
B41C 1/1025
. . .
{
using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
}
B41C 1/1033
. . .
{
by laser or spark ablation
}
B41C 1/1041
. .
{
by modification of the lithographic properties without removal or addition of material, e.g. by the mere generation of a lithographic pattern
}
B41C 1/105
. .
{
by electrocoagulation, by electro-adhesion or by electro-releasing of material, e.g. a liquid from a gel
}
B41C 1/1058
. .
{
by providing a magnetic pattern, a ferroelectric pattern or a semiconductive pattern, e.g. by electrophotography
}
B41C 1/1066
. .
{
by spraying with powders, by using a nozzle, e.g. an ink jet system, by fusing a previously coated powder, e.g. with a laser
}
. .
{
Mechanical aspects of on-press plate preparation( B41C 1/1008 to B41C 1/1066 take precedence )
}
. .
{
Mechanical aspects of off-press plate preparation( B41C 1/1008 to B41C 1/1066 take precedence )
}
. .
{
by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure, e.g. from a typewriter by electrical recording ribbon therefor
}
B41C 1/12
.
Multicolour formes
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B41C 1/14
.
for stencil-printing or silk-screen printing
B41C 1/141
. .
{
by cutting or perforation with mechanical means; Electrical spark cutting
}
B41C 1/142
. .
{
using a galvanic or electroless metal deposition processing step
}
B41C 1/144
. .
{
by perforation using a thermal head
}
B41C 1/145
. .
{
by perforation using an energetic radiation beam, e.g. a laser
}
B41C 1/147
. .
{
by imagewise deposition of a liquid, e.g. from an ink jet; Chemical perforation by the hardening or solubilizing of the ink impervious coating or sheet
}
B41C 1/148
. .
{
by a traditional thermographic exposure using the heat- or light- absorbing properties of the pattern on the original, e.g. by using a flash
}
B41C 1/16
.
Formes with areas rendered ink-resistant by covering with an amalgam ; Printing plates for amalgam printing
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B41C 1/18
.
Curved printing formes or printing cylinders
{
( B41C 1/10 , B41C 1/14 take precedence )
}
. .
{
Sleeves; Endless belts
}
B41C 1/184
. .
{
by transfer of the design to the cylinder, e.g. from a lithographic printing plate; by drawing the pattern on the cylinder; by direct cutting of the pattern on the cylinder
}
B41C 1/186
. .
{
by casting
}
B41C 1/188
. .
{
characterised by means for liquid etching of cylinders already provided with resist pattern
}
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Reproduction or duplicating of printing formes
B41C 3/02
.
Stereotyping( casting stereotype plates B41D 3/00 )
B41C 3/04
.
to produce rubber printing blocks
B41C 3/06
.
to produce printing blocks from plastics
B41C 3/08
.
Electrotyping ; Application of backing layers thereon
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B41C 2201/00
Location, type or constituents of the non-imaging layers in lithographic printing formes
B41C 2201/02
.
Cover layers ; Protective layers
B41C 2201/04
.
Intermediate layers
B41C 2201/06
.
Backcoats ; Back layers
B41C 2201/10
.
characterised by inorganic compounds, e.g. pigments
B41C 2201/12
.
characterised by non-macromolecular organic compounds
B41C 2201/14
.
characterised by macromolecular organic compounds, e.g. binder, adhesives
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B41C 2210/00
Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
B41C 2210/02
.
Positive working, i.e. the exposed (imaged) areas are removed
B41C 2210/04
.
Negative working, i.e. the non-exposed (non-imaged) areas are removed
B41C 2210/06
.
Developable by an alkaline solution
B41C 2210/08
.
Developable by water or the fountain solution
B41C 2210/10
.
Developable by an acidic solution
B41C 2210/12
.
Developable by an organic solution
B41C 2210/14
.
Multiple imaging layers
B41C 2210/20
.
characterised by inorganic additives, e.g. pigments, salts
B41C 2210/22
.
characterised by organic non-macromolecular additives, e.g. dyes, UV-absorbers, plasticisers
B41C 2210/24
.
characterised by a macromolecular compound or binder obtained by reactions involving carbon-to-carbon unsaturated bonds, e.g. acrylics, vinyl polymers
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B41C 2210/26
.
characterised by a macromolecular compound or binder obtained by reactions not involving carbon-to-carbon unsaturated bonds
B41C 2210/262
. .
Phenolic condensation polymers, e.g. novolacs, resols
B41C 2210/264
. .
Polyesters ; Polycarbonates
B41C 2210/266
. .
Polyurethanes ; Polyureas
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013