Patent EP0034816A2 successfully refreshed from Google Patents.
EP0034816A2
Expired / Lapsed
EP
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Multiple transfer of tacky image areas using prolonged tack toners
Assignee: EIDP Inc
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Filing: 1981-02-20
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Granted: —
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Expires: 2001-02-20
Abstract
Abstract A surface having tacky image areas and nontacky background areas can be color developed by applying to the tacky image areas a prolonged tack toner, heating the toned image to a temperature sufficient to make the toner tacky, reducing the temperature of the tackified toned image below the tackifying temperature, the toner remaining tacky, and repeating the toner application, heating and cooling steps at least once. The prolonged tack toned image can be used in single or multiple transfers to an image receptor. The transferred image can also be toned with prolonged tack toner to generate an image of higher optical density.
Inventors
- 👤 Robert Paul Held
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 18:16
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/16; G03G15/169; G03G13/00; G03G13/14; G03G13/16; H; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K3/061; H05K3/065
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
107 words
Process for image development of a substrate having latent image areas which comprises (a) applying to the latent image areas a prolonged tack toner to produce a nontacky toned image, (b) heating the toned image to a temperature sufficient to activate the toner by rendering the toner tacky, (c) reducing the temperature of the tackified toned image below the activating temperature of the prolonged tack toner wherein the activated prolonged tack toner remains tacky, (d) further applying prolonged tack toner to the tackified toned image, and (e) repeating steps (b) through (d) at least one time to increase the density of the toned image on the substrate.
Claim 2
Dependent Claim
107 words
Process for image development of a substrate having latent image areas which comprises (a) applying to the latent image areas a prolonged tack toner to produce a nontacky toned image, (b) heating the toned image to a temperature sufficient to activate the toner by rendering the toner tacky, (c) reducing the temperature of the tackified toned image below the activating temperature of the prolonged tack toner wherein the activated prolonged tack toner remains tacky, (d) further applying prolonged tack toner to the tackified toned image, and (e) repeating steps (b) through (d) at least one time to increase the density of the toned image on the substrate.
Claim 3
Dependent Claim
15 words
A process according to Claim 1 wherein the latent image areas result from electrostatic imaging.
Claim 4
Dependent Claim
15 words
A process according to Claim 1 wherein the latent image areas result from electromagnetic imaging.
Claim 5
Dependent Claim
19 words
A process according to Claim 1 wherein the latent image areas are tacky and the background areas are nontacky.
Claim 6
Dependent Claim
45 words
A process according to Claim 4 wherein the substrate is a supported photosensitive layer which is photopolymerizable containing at least one free radical initiated, chain propagating, addition polymerizable compound containing at least one terminal ethylenic group, and an addition polymerization initiator activatable by actinic radiation.
Claim 7
Dependent Claim
96 words
A process for forming toned images from a substrate master having latent image areas which comprises (a) applying to the latent image areas of the substrate a prolonged tack toner to produce a nontacky toned image, (b) heating the toned image to a temperature sufficient to activate the toner by rendering the toner tacky, (c) bringing the tacky toned substrate into intimate contact with an image receptor, and, while the toner is still activated, (d) separating the substrate and image receptor whereby a portion of the activated prolonged tack toner transfers imagewise to the image receptor.
Claim 8
Dependent Claim
96 words
A process for forming toned images from a substrate master having latent image areas which comprises (a) applying to the latent image areas of the substrate a prolonged tack toner to produce a nontacky toned image, (b) heating the toned image to a temperature sufficient to activate the toner by rendering the toner tacky, (c) bringing the tacky toned substrate into intimate contact with an image receptor, and, while the toner is still activated, (d) separating the substrate and image receptor whereby a portion of the activated prolonged tack toner transfers imagewise to the image receptor.
Claim 9
Dependent Claim
66 words
A process according to Claim 6 wherein the temperature of the tackified toned substrate is reduced below the activating temperature of the prolonged tack toner wherein the toner remains tacky and prolonged tack toner is again applied over the remaining tacky toner on the substrate master and steps ' (b) through (d) are repeated at least one time using a separate image receptor in step (c).
Claim 10
Dependent Claim
54 words
A process according to Claim 6 wherein following step (d), the temperature of the prolonged tack toner transferred to the image receptor is reduced below the activating temperature of the prolonged tack toner and additional prolonged tack toner is applied over the still tacky image to increase the density of the toned transferred image.
Claim 11
Dependent Claim
25 words
A process according to Claim 8 wherein, steps (b) through (d) are repeated at least one time using a separate image receptor in step (c).
Claim 12
Dependent Claim
22 words
A process according to any one of Claims 6, 7, 8 or 9 wherein said latent image areas result from electrostatic imaging.
Claim 13
Dependent Claim
22 words
A process according to any one of Claims 6, 7, 8 or 9 wherein said latent image areas result from electromagnetic imaging.
Claim 14
Dependent Claim
26 words
A process according to any one of Claims 6, 7, 8 or 9 wherein said latent image areas are tacky and the background areas are nontacky.
Claim 15
Dependent Claim
46 words
A process according to Claim 6 wherein the substrate master is a supported photosensitive layer which is photopolymerizable containing at least one free radical initiated, chain propagating, addition polymerizable compound containing at least one terminal ethylenic group, and an addition polymerization initiator activatable by actinic radiation.
Claim 16
Dependent Claim
74 words
A process according to Claim 6 wherein steps (a) to (d) are repeated up to four times using a substrate master having tacky and image areas and nontacky background areas on each of up to four substrates formed therein by exposure with actinic radiation through different color separation transparencies and the transfer step is accomplished by transferring in register toners of appropriate color with respect to the separation transparencies onto a single image receptor.
Claim 17
Dependent Claim
12 words
A process according to Claim 6 wherein the image receptor is paper.
Claim 18
Dependent Claim
30 words
A process according to Claim 6 wherein the image receptor is a copper clad laminate board which after image transfer is subsequently etched or plated to form a printed circuit.
Claim 19
Dependent Claim
42 words
A process according to Claim 6 wherein the image receptor is an aluminum plate and after image transfer the image is heated at a temperature up to 150°C, treated with lithographic solutions and inked to provide inked impressions on separate image receptors.
Claim 20
Dependent Claim
28 words
A process according to Claim 17 wherein after image transfer, while the image is still tacky and prior to heating, the toned image is retoned with polymer particles.
Claim 21
Independent Claim
257 words
An apparatus for the production of multiple copies from a substrate master having tacky image areas and nontacky background areas onto an image receptor which comprises support means for the substrate capable of sequentially and cyclically transporting the substrate, in order, past the following stations located adjacent to the support means: (1) a toner applicator to apply a uniform layer of prolonged tack toner particles onto the tacky image areas of the substrate; (2) a toner cleaner extending the full width of the support means comprising an air knife and at least one vacuum nozzle located in close proximity to the air knife for removing toner particles dislodged from the nontacky background areas of the substrate by the action of the air knife; optionally (3) a cleaning belt held in contact with the support means and extending the full width of the support means capable of vibrating in a direction transverse to the direction in which the toned substrate is transported, (4) heating means for heating the toned substrate to raise the temperature of the prolonged tack toners above the temperature at which the toners become tackified, (5) an image transfer means comprising rollers for bringing the tacky toned substrate into intimate contact with the image receptor, and (6) a cooling air supply extending the full width of the support means for providing cooling air over the toned substrate to reduce the temperature of the prolonged tack toners below the temperature at which the toners become tackified, the cooling air supply being located ahead of station (1).
Claim 22
Independent Claim
257 words
An apparatus for the production of multiple copies from a substrate master having tacky image areas and nontacky background areas onto an image receptor which comprises support means for the substrate capable of sequentially and cyclically transporting the substrate, in order, past the following stations located adjacent to the support means: (1) a toner applicator to apply a uniform layer of prolonged tack toner particles onto the tacky image areas of the substrate; (2) a toner cleaner extending the full width of the support means comprising an air knife and at least one vacuum nozzle located in close proximity to the air knife for removing toner particles dislodged from the nontacky background areas of the substrate by the action of the air knife; optionally (3) a cleaning belt held in contact with the support means and extending the full width of the support means capable of vibrating in a direction transverse to the direction in which the toned substrate is transported, (4) heating means for heating the toned substrate to raise the temperature of the prolonged tack toners above the temperature at which the toners become tackified, (5) an image transfer means comprising rollers for bringing the tacky toned substrate into intimate contact with the image receptor, and (6) a cooling air supply extending the full width of the support means for providing cooling air over the toned substrate to reduce the temperature of the prolonged tack toners below the temperature at which the toners become tackified, the cooling air supply being located ahead of station (1).
Claim 23
Dependent Claim
14 words
An apparatus according to Claim 19 wherein the support means is a carrier belt.
Claim 24
Dependent Claim
26 words
An apparatus according to Claim 20 wherein the substrate master is initially attached to the carrier belt at a point ahead of the toner applicator station.
Claim 25
Dependent Claim
15 words
An apparatus according to Claim 21 wherein the toner applicator station comprises a toner hopper.
Claim 26
Dependent Claim
27 words
An apparatus according to Claim 22 wherein the toner hopper has attached to a wall thereof a vibrating driving means to impart vibratory motion to the hopper.
Claim 27
Dependent Claim
30 words
An apparatus according to Claim 23 wherein attached to the hopper and adjacent to the carrier belt is a brush which redistributes toner over the tacky image bearing substrate master.
Claim 28
Dependent Claim
22 words
An apparatus according to Claim 24 wherein the cleaning belt station is present between the toner cleaner station and the heating station.
Claim 29
Dependent Claim
13 words
An apparatus according to Claim 25 wherein the heating station comprises infrared heaters.
Claim 30
Dependent Claim
31 words
An apparatus according to Claim 26 wherein operably adjacent to the image transfer means is guiding means to guide the image receptor in and out of contact with the substrate master.
Claim 31
Dependent Claim
22 words
An apparatus according to Claim 27 wherein the cooling air supply station comprises a nozzle attached to a source of cold air.
Claim 32
Dependent Claim
46 words
An apparatus according to Claim 19 wherein the substrate master is a supported photosensitive layer which is photopolymerizable containing at least one free radical initiated, chain propagating, addition polymerizable compound containing at least one terminal ethylenic group, and an addition polymerization initiator activatable by actinic radiation.
References Cited (Backward Citations)
No citation records indexed.
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