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US3724096A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for drying an electrophotographic support

Assignee: Kimberly Clark Tissue Co
•
Filing: 1971-05-06
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Granted: 1973-04-03
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Expires: 1991-05-06
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Abstract

Abstract A method for drying an electrophotographic support element containing on its front surface a latent electrostatic image which has been developed in a liquid medium, in which the support element is placed on a downwardly inclined foraminous member so that its back surface contacts the foraminous member and its front surface is directed away from the foraminous member, and cool air is circulated over the front surface and the back surface of the support element so as to evaporate the volatile components of the liquid medium from the support element. Apparatus for drying, in accordance with the method described, an electrophotographic support element containing on its front surface a developed latent electrostatic image, including means to circulate cool air over the front and back surfaces of the support element held in an inclined position in a drying chamber. The method and apparatus are particularly useful for drying support elements which are of unusually large size and weight and which have toned images of a type rendering the support elements suitable for use as lithographic masters or offset printing plates on a printing press.

Inventors

  • 👤 A Mandeville

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 13:41
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/24; G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/11

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 216 words
Apparatus for drying an electrophotographic support element containing on its front surface a latent electrostatic image which has been toned and rendered visible by immersion of said support element in a develoPing solution comprising a mixture of charged toner particles in a carrier liquid, comprising wall means defining a drying chamber, air pervious means for supporting said support element in a downwardly inclined position in said drying chamber so as to divide said drying chamber into at least two compartments with at least one end of said support element being spaced from said wall means to leave a communicating passageway between said two compartments, said air pervious means being adapted to support said support element so as to permit contact of air with both surfaces of said support element, air inlet means and air outlet means disposed on opposite sides of said support element when supported by said air pervious means and arranged so that the air will pass from said air inlet means across one entire surface of said support element, through said communicating passageway, across the opposite surface of said support element in reverse direction, and through the air outlet means, and circulating means for creating a flow of air from said air inlet means to said air outlet means through said drying chamber.
Claim 2
Dependent Claim 216 words
Apparatus for drying an electrophotographic support element containing on its front surface a latent electrostatic image which has been toned and rendered visible by immersion of said support element in a develoPing solution comprising a mixture of charged toner particles in a carrier liquid, comprising wall means defining a drying chamber, air pervious means for supporting said support element in a downwardly inclined position in said drying chamber so as to divide said drying chamber into at least two compartments with at least one end of said support element being spaced from said wall means to leave a communicating passageway between said two compartments, said air pervious means being adapted to support said support element so as to permit contact of air with both surfaces of said support element, air inlet means and air outlet means disposed on opposite sides of said support element when supported by said air pervious means and arranged so that the air will pass from said air inlet means across one entire surface of said support element, through said communicating passageway, across the opposite surface of said support element in reverse direction, and through the air outlet means, and circulating means for creating a flow of air from said air inlet means to said air outlet means through said drying chamber.
Claim 3
Dependent Claim 41 words
Apparatus according to claim 1, wherein said air pervious means comprise a foraminous member upon which said support element is disposed so that its back surface contacts said foraminous member and said front surface is directed away from said foraminous member.
Claim 4
Dependent Claim 38 words
Apparatus according to claim 1, wherein said support element when supported by said air pervious means is spaced from the wall means defining the bottom of said drying chamber to form said communicating passageway between said two compartments.
Claim 5
Dependent Claim 36 words
Apparatus according to claim 1, wherein said air inlet means emits air adjacent said front surface of said support element, and said air outlet means removes air from adjacent the back surface of said support element.

References Cited (Backward Citations)

US2959870A Cited
US2994134A Cited
US3203106A Cited
US3158447A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-02 1976-10-02 1977-04-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-02 1980-10-02 1981-04-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-02 1984-10-02 1985-04-03 $7700.00 Window Closed / Lapsed

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