US3538834A - Drying and piling device for wet developed sensitized papers - Google Patents

Drying and piling device for wet developed sensitized papers Download PDF

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Publication number
US3538834A
US3538834A US742088A US3538834DA US3538834A US 3538834 A US3538834 A US 3538834A US 742088 A US742088 A US 742088A US 3538834D A US3538834D A US 3538834DA US 3538834 A US3538834 A US 3538834A
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US
United States
Prior art keywords
drying
sheets
feed
air
copy sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US742088A
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English (en)
Inventor
Ryutaro Yamagata
Koso Nakamune
Tatsuo Aizawa
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Individual
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Individual
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Filing date
Publication date
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Publication of US3538834A publication Critical patent/US3538834A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/02—Drying; Glazing
    • G03D15/027—Drying of plates or prints
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D5/00—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
    • G03D5/06—Applicator pads, rollers or strips
    • G03D5/067—Rollers

Definitions

  • the present invention relates to the copy-making art and particularly photosensitive copies which are developed by the application of a liquid developer to the exposed sensitized surface and such liquid developer must be removed by suitable means such as drying.
  • An object of the present invention is to overcome the difficulties enumerated above.
  • Another object is to provide a drying and guiding means by using moving drying air to maintain sheets of material in a proper feed path.
  • the invention provides for applying a developer liquid by means of rollers of which one roller extends into a tank of the developer and the sheets are fed from the developing roller by means of feed rollers having a plurality of spaced roll elements arranged with the roll elements in axially spaced relation with the roll elements pinching the sheets to positively feed the sheets and manifold-type blowers extend across the path of the sheets between the developer applying rollers and the feed rolls and blow a warm drying gas, such as air, on one or both surfaces of the sheets, maintaining the sheets in suspended relation as they project beyond the feed rollers, with the drying air effectively drying the sheets and the drying air serves to support the sheets as the sheets leave the feed rollers and the sheets are substantially dry and are then received in a tray and piled one on another in succession with the sheets being sufficicntly dry for practical use and storage.
  • a warm drying gas such as air
  • F IG. 1 is a diagrammatic vertical sectional view of the developing, drying and piling devices in operation and showing the upper and lower drying blowers with the blasts of drying air supporting the sheets as they are received in a neat pile in a tray;
  • P16. 2 is an elevation of the exit end of the apparatus showing the spaced feed rolls supported on driven shafts in the side members and showing the nozzle openings in the manifolds for directing drying air;
  • FIG. 3 is a section similar to FIG. 1 showing a single drying blower below the path of the sheets;
  • FlG. 4 is a sectional view similar to FIG. 1 showing a single drying blower above the sheets.
  • An upper manifold 9 and a lower manifold 9' are positioned between the pair of developer rolls 2 and 3 and the feed rolls 7 and 7 and such manifolds include nozzles 10 and 10, respectively, which have apertures 11 and 11, respectively, which are directed toward the copy sheet C and toward the feed rollers 6 and 6' and drying gas, such as air, is fed to the manifolds through conduits l2 and 12, respectively, under sufficient pressure to effectively dry the copy sheets C as they progress through the feed rollers 7, 7 with the drying gas passing through the spaces between the adjacent feed rolls into unobstructed contact with both surfaces of the copy sheet C, as shown in dash-dot lines in FIG. 1 as the copy sheet emerges from the feed rolls, the motion of the drying air being shown by the arrows in the various figures of the drawing.
  • drying gas such as air
  • the drying air is fed to conduits l2 and 12' from any suitable source of dry heated air and one source is the heated air which is discharged from the'exposing apparatus where air is directed against the exposure lamps and the cylinder which supports the master and the copy sheet during the exposure. Consequently this invention takes advantage of the heat produced by the exposure lamp to dry the wet developed copies. It will be apparent that suitable conduits and pumps are provided to carry the heated air and provide sufficient pressure and volume to accomplish the drying action.
  • the manifold 9' is placed on only the underside of the wetted sensitized paper C and suitable guide rollers 13 are rotatably mounted in the frame members a,a to maintain the wetted sensitized paper in its proper feed direction.
  • the manifold 9 with the nozzle 10 is provided above the copy sheet C only and the apertures 11 are directed downwardly and toward the feed rollers 7, 7 and suitable guide rollers 13 are provided to guide the leading edge of the copy sheet into the guide rollers 7, 7'.
  • the strong air flow extending toward the feeding rolls and toward the copy sheets serves to feed the leading edges of the copy sheets into the feed rolls 7 and 7 and the air blows through the spaces between the rolls 7 and 7' causing the air to brush along both surfaces of the copy sheet, thereby effectively drying the copy sheet and maintaining the copy sheet in suspended condition as shown by the dot-dash line to illustrate a copy sheet emerging from the feed rolls 7 and 7' and the copy sheet is substantially dried by the time the trailing end of the copy sheet leaves the feed rolls and the weight of the copy sheet causes the copy sheet to drop into the tray 8 and form a neat pile at C, as clearly shown in the drawing.
  • the air flow on the upper surface has practically no obstructions and readily passes through the spaces between the rolls 7 and flows with a high speed along the surface of the emerging copy sheet.
  • the air flow applied to the under surface of the copy sheet cannot pass smoothly over the receiving tray 8 through the spaces between the under rollers 7' due to the front edge of the tray 8 and therefore the leading end of the sensitized copy paper sheet is forced up when the trailing end portion of the sensitized paper copy sheet emerges from the feeding rolls 7, 7 and the sensitized paper copy sheet falls into the receiving tray after floating in the air for a predetermined distance.
  • the present invention provides for applying developer and rapidly drying the developer from the sheets and neatly piling the dried sheets in the receiving tray 8 and the drying air is preferably obtained from the air which is normally provided to cool the exposure lamp and therefore the invention provides for great efficiency by using waste heat and also by avoiding the necessity of manual handling of the sheets.
  • a wet developing, drying, and piling apparatus for developing, drying, and piling exposed and developed sensitized sheets as the sheets are passed through the apparatus comprising means to apply wet developer to the exposed surface of the sensitized sheets, a tray spaced from said means to apply developer positioned in the line of movement of the sheets for receiving the dried sheets, feed means spaced away from the means to apply developer and adjacent the leading end of the tray, said feed means comprising a pair of rotatably mounted shafts with a plurality of axially spaced apart discs rotatable with the shaft to feed the leading edge of the sheet into the tray, at least one blower having nozzle means directed toward-the path of the sheets and toward the bite of said discs of the feed means, said nozzle means directing the drying gas from the nozzle means through the space between the discs to dry the sheets, the leading end of the tray extending in the path of air from the nozzle means to deflect the air against the sheets, guide means on the opposite side of the path of the copy sheets with respect to at least one blower to

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Drying Of Solid Materials (AREA)
US742088A 1967-07-05 1968-07-02 Drying and piling device for wet developed sensitized papers Expired - Lifetime US3538834A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5797567 1967-07-05
US74208868A 1968-07-02 1968-07-02

Publications (1)

Publication Number Publication Date
US3538834A true US3538834A (en) 1970-11-10

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ID=26399062

Family Applications (1)

Application Number Title Priority Date Filing Date
US742088A Expired - Lifetime US3538834A (en) 1967-07-05 1968-07-02 Drying and piling device for wet developed sensitized papers

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US (1) US3538834A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1772800B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1573359A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1210297A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023490A (en) * 1975-08-14 1977-05-17 Marozzi Alfred A Rotary imprinting apparatus
US4135312A (en) * 1977-04-21 1979-01-23 Hope Henry F Film dryer
US20180022082A1 (en) * 2015-04-30 2018-01-25 Hewlett-Packard Development Company, L.P. Dryers for Printed Media

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE885816C (de) * 1950-10-18 1953-08-10 Renker Belipa Ohg Vorrichtung zum Entwickeln von Lichtpausen nach dem Halbtrockenverfahren
NL91058C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1956-07-19

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023490A (en) * 1975-08-14 1977-05-17 Marozzi Alfred A Rotary imprinting apparatus
US4135312A (en) * 1977-04-21 1979-01-23 Hope Henry F Film dryer
US20180022082A1 (en) * 2015-04-30 2018-01-25 Hewlett-Packard Development Company, L.P. Dryers for Printed Media
US10442184B2 (en) * 2015-04-30 2019-10-15 Hewlett-Packard Development Company, L.P. Dryers for printed media

Also Published As

Publication number Publication date
GB1210297A (en) 1970-10-28
FR1573359A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-07-04
DE1772800B1 (de) 1971-02-18

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