METHOD FOR IMPROVING THE CONSISTENCY OF THE COLOR DENSITY OVER A PRINTING WIDTH AND INKJET PRINTER
Patent Abstract / Summary
The invention relates to a method for improving the consistency of the color density over the printing width of an inkjet printer (10) comprising the steps of:- Printing a 2-dimensional pattern (32), wherein the 2-dimensional pattern (32) has the same nominal print density over a printing width and varying nominal print densities in printing direction;- Dividing the 2-dimensional pattern (32) in multiple columns (38) across the printing width;- Recording with a camera (24) at least one color value for each nominal print density in each of the columns (38);- Deriving a correction curve for each column (38) from the recorded color values; and- Correcting printing signals and/or printing patterns with the correction curves.Furthermore, the invention relates to an inkjet printer (10).
IPC Classifications
Priority Claims
No priority claims recorded
Designated Contracting States (39 EPC States)
Parties & Representation
Applicants
BOBST MEX SA
Route de Faraz 3, 1031 Mex
CHInventors (3)
BERCLAZ, Paul
2037 Montmollin
CHRICHARD, Matthieu
25160 Remoray
FRHOFMANN, Thomas
1201 Genève
CHRepresentatives / Agents
Hasler, David
Bobst Mex SA, Intellectual Property
CHKoenig & Bauer AG
- Lizenzen - Patente -, Friedrich-Koenig-Straße 4
DEKey Procedural Dates
Patent Oppositions
Official opposition proceedings filed against European Patent EP4349603 under EPC Article 99.
Koenig & Bauer AG
Friedrich-Koenig-Straße 4, DE
Koenig & Bauer AG
2026-08-05
Legal Status & Event History
Official European Patent Office legal and procedural status changes recorded for this file.
| Date | Code | Event Description | Auth |
|---|---|---|---|
| 2024-04-10 | AK | DESIGNATED CONTRACTING STATES | EP |
| 2024-03-08 | PUAI | PUBLIC REFERENCE MADE UNDER ARTICLE 153(3) EPC TO A PUBLISHED INTERNATIONAL APPLICATION THAT HAS ENTERED THE EUROPEAN PHASE | EP |
| 2024-03-08 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2024-10-11 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2024-11-13 | 17P | REQUEST FOR EXAMINATION FILED | EP |
| 2024-11-13 | RBV | DESIGNATED CONTRACTING STATES (CORRECTED) | EP |
| 2025-05-19 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-06-17 | GRAP | DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT | EP |
| 2025-06-17 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2025-06-25 | RIC1 | INFORMATION PROVIDED ON IPC CODE ASSIGNED BEFORE GRANT | EP |
| 2025-07-23 | INTG | INTENTION TO GRANT ANNOUNCED | EP |
| 2025-09-27 | GRAS | GRANT FEE PAID | EP |
| 2025-10-31 | GRAA | (EXPECTED) GRANT | EP |
| 2025-10-31 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2025-12-03 | AK | DESIGNATED CONTRACTING STATES | EP |
| 2025-12-03 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-12-18 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-12-31 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-01-14 | U01 | REQUEST FOR UNITARY EFFECT FILED | EP |
| 2026-01-21 | U07 | UNITARY EFFECT REGISTERED | EP |
| 2026-03-02 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-03-04 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-04-13 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-14 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-17 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-24 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-29 | U1N | APPOINTED REPRESENTATIVE FOR THE UNITARY PATENT PROCEDURE CHANGED AFTER THE REGISTRATION OF THE UNITARY EFFECT | EP |
| 2026-07-03 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-18 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-21 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-25 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-08-07 | PLBI | OPPOSITION FILED | EP |
| 2026-08-12 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-09-09 | 26 | OPPOSITION FILED | EP |
| 2026-09-15 | PLAX | NOTICE OF OPPOSITION AND REQUEST TO FILE OBSERVATION + TIME LIMIT SENT | EP |
Patent & Non-Patent Citations
Cited documents and prior art referenced in search and examination reports.
Cited Patent Documents
Non-Patent Scientific Literature (NPL)
Worldwide Patent Family
Related applications and patents in the same INPADOC worldwide family.
| Country | Publication Number | Kind | Publication Date | Action |
|---|---|---|---|---|
| EP | EP4349603A1 | A1 | 2024-04-10 | Espacenet |
| EP | EP4349603B1 | B1 | 2025-12-03 | Espacenet |
| EP | EP4349603C0 | C0 | 2025-12-03 | Espacenet |
| CN | CN119998130A | A | 2025-05-13 | Espacenet |
| ES | ES3057393T3 | T3 | 2026-03-02 | Espacenet |
| JP | JP2025531580A | A | 2025-09-19 | Espacenet |
| US | US20260087290A1 | A1 | 2026-03-26 | Espacenet |
| WO | WO2024074342A1 | A1 | 2024-04-11 | Espacenet |
Complete European Patent Register Dossier (148 Total Documents)
The full inspection file for Application EP22199414 contains 148 total documents, including all notices of opposition, proprietor counter-statements, examination communications, third-party observations, and procedural forms. Below are all major recorded procedural filings and publication specifications.
Recorded Filings & Patent Specifications
Official publication specifications, opposition filings, proprietor replies, and procedural submissions.