§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
EP0074677A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method and device for transferring and fixing of powder images

Assignee: Canon Production Printing Netherlands BV
•
Filing: 1982-08-13
•
Granted: —
•
Expires: 2002-08-13
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Method in which a powder image which is formed on an intermediate support (1) is made sticky and subsequently under the influence of pressure is transferred onto a paper receiving support and fixed thereon. The intermediate support (1) has a hydrophobic surface and the image powder absorbs water and softens on absorbing water. After image formation the intermediate support (1) with the powder image adherent thereto is covered with water and directly after this a curved surface of a squeegee element (24) is rolled over the surface of the intermediate support (1) so as to dry the latter. In a device for performing the method the squeegee element is a roller (24) which is in pressure contact with the intermediate support (1) and which over a portion of its periphery is immersed in a water bath (25).

Inventors

  • 👤 Willem Tjark Draai
  • 👤 Josef Jan Antonius Pleyers
  • 👤 Nicolaas Paulus Joseph Kuin

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 10:56
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2092; G03G15/14; G03G15/16; G03G15/1605; G03G15/161

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 124 words
Method in which a powder image is formed on a resiliently-deformable intermediate support, the powder image is softened and thus rendered sticky whilst present on the intermediate support, and the sticky image is finally transferred onto a paper receiving support under the influence of pressure and fixed thereon, characterised in that an intermediate support (1) is employed the surface of which is hydrophobic, an image powder is employed which absorbs water and which softens on absorbing water, and in that after image formation the intermediate support (1) with the powder image adherent thereto is covered with water and directly after this a curved surface of a squeegee element (24) is rolled over the intermediate support (1) so as to dry the hydrophobic surface thereof.
Claim 2
Dependent Claim 124 words
Method in which a powder image is formed on a resiliently-deformable intermediate support, the powder image is softened and thus rendered sticky whilst present on the intermediate support, and the sticky image is finally transferred onto a paper receiving support under the influence of pressure and fixed thereon, characterised in that an intermediate support (1) is employed the surface of which is hydrophobic, an image powder is employed which absorbs water and which softens on absorbing water, and in that after image formation the intermediate support (1) with the powder image adherent thereto is covered with water and directly after this a curved surface of a squeegee element (24) is rolled over the intermediate support (1) so as to dry the hydrophobic surface thereof.
Claim 3
Dependent Claim 113 words
Device for performing the method according to claim 1, comprising a moving intermediate support (1), means (2) for bringing a moving image support (5) in a first zone 6 into pressure contact with the intermediate support (1), as well as means (4,18,19) for bringing a moving receiving support in a second zone (17) in pressure contact with the intermediate support (1), characterised in that in a third zone (26) which is located between the said first (6) and second (17) zone a rotating squeegee roller (24) is in pressure contact with the intermediate support (1), the said squeegee roller (24) being immersed over a portion of its periphery in a water bath (25).

References Cited (Backward Citations)

US3318212A Cited
US3820985A Cited
US3923392A Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag