US4958564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for preparing a planographic printing form
Assignee: Manroland AG
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Filing: 1989-10-05
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Granted: 1990-09-25
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Expires: 2009-10-05
Abstract
Abstract To prevent engagement of a thermo printing head (23), with a thermo transfer tape (22) directly against a plate cylinder having an unyielding surface, an auxiliary transfer element in ribbon, tape or belt form (24, 24', 35) is provided, which is engaged against the thermo tape, ribbon or belt (22) by a counter roller (25) of yielding material or have a yielding surface; thermally affectable material is transferred from the thermo transfer tape in accordance with image information to be printed on the auxiliary tape (24, 24') for transfer to the plate cylinder or material which is not to print is transferred on the auxiliary tape, and the remainder of the material is transferred from the thermo transfer tape on the tape cylinder (10).
Inventors
- 👤 Hartmut Fuhrmann
- 👤 Reinhard Plaschka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:58
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/10; B41C1/1091; B41C1/1075
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
86 words
Method of making a planographic printing form (10) comprising the steps of providing a thermo transfer element (22) having ink-accepting surface areas; providing an auxiliary transfer element (24, 24', 35); contacting said thermo transfer element and said auxiliary transfer element; selectively thermally transferring thermally affectable material from said thermo transfer element to the auxiliary transfer element under control of a control unit (C) in accordance with an image to be printed; and transferring said thermally affectable material from one of said elements to said printing form.
Claim 2
Dependent Claim
86 words
Method of making a planographic printing form (10) comprising the steps of providing a thermo transfer element (22) having ink-accepting surface areas; providing an auxiliary transfer element (24, 24', 35); contacting said thermo transfer element and said auxiliary transfer element; selectively thermally transferring thermally affectable material from said thermo transfer element to the auxiliary transfer element under control of a control unit (C) in accordance with an image to be printed; and transferring said thermally affectable material from one of said elements to said printing form.
Claim 3
Dependent Claim
66 words
The method of claim 1, wherein said auxiliary transfer element (24, 24') is a tape, ribbon or belt; and said step of transferring said thermally affectable material comprises transferring thermally affectable material transferred from the thermo transfer element (22) to the auxiliary transfer element (24, 24') onto the printing form (10) by engaging said auxiliary transfer element against the printing form by a pressure roller (26).
Claim 4
Dependent Claim
27 words
The method of claim 2, wherein said step of engaging the tape, ribbon or belt (24, 24') against the printing form (10) comprises heating said roller (26).
Claim 5
Dependent Claim
34 words
The method of claim 2, further including the step of providing auxiliary heat to the region where transfer of said thermally affectable material from one of said elements to said printing form (10) occurs.
Claim 6
Dependent Claim
76 words
The method of claim 1, wherein the step of selectively thermally transferring thermally affectable material from said thermo transfer element to the auxiliary transfer element comprises transferring those surface areas from the thermo transfer element to the auxiliary transfer element (35) which do not carry printing information; and wherein said step of transferring said thermally affectable material comprises contacting the thermo transfer element with the printing form (10) and applying heat in the region of contact.
Claim 7
Dependent Claim
33 words
The method of claim 5, wherein said contacting step and said heating application step comprises engaging said thermo transfer element at the side remote from said printing form with a heated roller (26).
Claim 8
Independent Claim
132 words
A system to provide ink-accepting and ink-rejecting surface areas on a planographic printing form (10) comprising a thermo transfer element (22); means (23, C) including a thermo printing head (23) for applying image carrying information to said thermo transfer element; an auxiliary transfer element (24, 24', 35); means (25, 27) for engaging said auxiliary transfer element against the printing head, with said thermo transfer element (22) interposed, to transfer thermally affectable material from the thermo transfer element (22) onto the auxiliary transfer element (24, 24', 35) in accordance with image information, and in accordance with selective energization of the thermo printing head (23); and an engagement roller (26) contacting one of said transfer elements against the printing form (10) for transferring thermally affectable material from the respective transfer element onto printing form.
Claim 9
Independent Claim
132 words
A system to provide ink-accepting and ink-rejecting surface areas on a planographic printing form (10) comprising a thermo transfer element (22); means (23, C) including a thermo printing head (23) for applying image carrying information to said thermo transfer element; an auxiliary transfer element (24, 24', 35); means (25, 27) for engaging said auxiliary transfer element against the printing head, with said thermo transfer element (22) interposed, to transfer thermally affectable material from the thermo transfer element (22) onto the auxiliary transfer element (24, 24', 35) in accordance with image information, and in accordance with selective energization of the thermo printing head (23); and an engagement roller (26) contacting one of said transfer elements against the printing form (10) for transferring thermally affectable material from the respective transfer element onto printing form.
Claim 10
Dependent Claim
14 words
The system of claim 7, wherein said engagement roller (26) is a heated roller.
Claim 11
Dependent Claim
19 words
The system of claim 7, wherein heating means (39) are provided heating at least one of said transfer elements.
Claim 12
Dependent Claim
37 words
The system of claim 7, including heating means located in the vicinity of said engagement roller to heat the region of transfer of said thermally affectable material from the respective transfer element onto the printing form (10).
Claim 13
Dependent Claim
22 words
The system of claim 7, including radiant heating means (39) to heat at least one of said transfer elements (24, 24', 35).
Claim 14
Dependent Claim
46 words
The system of claim 7, wherein at least one of said transfer elements (24, 24', 35) comprises a tape, ribbon or belt means of insulating material and having a layer or coating of resistive material thereon for resistive heating of the respective tape, ribbon or belt.
Claim 15
Dependent Claim
50 words
The system of claim 7, wherein said means for engaging the auxiliary transfer element against the thermo printing head (23), with the thermo transfer element interposed, comprises a roller (25) having a yielding surface, to provide a counter surface for said thermo transfer head (23) which is yielding or compressible.
Claim 16
Dependent Claim
28 words
The system of claim 7, wherein said auxiliary transfer element (24, 24', 35) comprises a tape, ribbon or belt of transversely yielding elastic, but longitudinally dimensionally stable material.
References Cited (Backward Citations)
US3859920A
Cited
US3964389A
Cited
JPS5839457A
Cited
JPS62264953A
Cited
EP0264604A2
Cited
DE3636129A1
Cited
US4846065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |