US3805409A - Drying apparatus - Google Patents

Drying apparatus Download PDF

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Publication number
US3805409A
US3805409A US00188584A US18858471A US3805409A US 3805409 A US3805409 A US 3805409A US 00188584 A US00188584 A US 00188584A US 18858471 A US18858471 A US 18858471A US 3805409 A US3805409 A US 3805409A
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US
United States
Prior art keywords
slit
blade
dried
air
drying apparatus
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
US00188584A
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English (en)
Inventor
M Sato
I Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Application granted granted Critical
Publication of US3805409A publication Critical patent/US3805409A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/24—Arrangements of devices using drying processes not involving heating
    • F26B13/28—Arrangements of devices using drying processes not involving heating for applying pressure; for brushing; for wiping
    • 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
    • G03D15/022—Drying of filmstrips
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/11—Removing excess liquid developer, e.g. by heat

Definitions

  • This invention relates to an apparatus for drying material with an air stream and, in particular for drying an electrophotographic material or silver halide photographic material.
  • FIG. 1 shows a longitudinal sectional side view of the conventional drying apparatus for sheets or web material using an air stream
  • a material to be dried such as an electrophotographic material moistened upon treating by a liquid developing process or silver halide photographic material moistened with water after developing treatment.
  • an air supply pipe 11 An air jet injection slit 12, the place 13 directly under the slit 12 where the air jet is strongest, an air stream 14 indicating that the ejected air jet is expanding, and a drive roller 16 for driving the material 10 to be dried in the direction designated by an arrow 15.
  • the air is fed into the air supply pipe by an air compressor or fan.
  • the material 10 When the roller 16 is rotated clockwise, the material 10 is driven in the direction designated by arrow 15.
  • the liquid which moistens the surface of the material 10 is swept in the direction designated by arrow 17 by the air jet. It is common that a very thin liquid is retained on the surface of the material 10 even if the liquid on the surface of the material 10 is swept by the air jet. However, this thin liquid film is dried and evaporated by the air jet.
  • This thin liquid film is retained in the event that the surface of the material 10 is moistened with a wettable liquid.
  • the thin liquid film is retained when a material having a hydrophilic surface is moistened with water or when a material having an oilphilic surface is moistened with oil.
  • the thin liquid film is not retained when the hydrophilic surface is moistened with oil or when the oilphilic surface is moistened with water.
  • the speed of the air jet is very high at the place 13 directly under the slit 12, but the air stream can freely expand in the space away from the place 13 as shown by numeral 14, and accordingly the speed of the air jet becomes abruptly small.
  • the air stream away from the place 13 has a small capability to sweep the liquid on the surface of the material 10 and also has small capability to dry the liquid film retained on the surface of the material 10.
  • the drying speed is low. Therefore, the speed for driving the material 10 in the direction designated by arrow cannot be substantially increased.
  • the simplest method for increasing the drying speed in the apparatus shown in FIG. 1 is to increase the air amount supplied into the pipe 11 thereby increasing the speed of the air jet from the slit 12.
  • the capacity of the air compressor or the fan must be increased with the result that the air supplying device becomes large.
  • the speed of the air jet becomes high, the sound generated at the air jet injection slit 11 is enhanced to introduce a large noise within the drying apparatus.
  • the speed of the air stream at the place 13 directy under the slit becomes locally very strong with the result that it undesirably affects the material. For example, it is thought that the toner image formed on the surface of the electrophotographic material can be damaged. It is well known that the toner image obtained by the liquid developing process is mechanically very weak before it is fixed, particularly while it is moistened, and thus tends to be broken. Therefore, if an excessively high speed air jet is used, the toner image tends to be damaged. Accordingly, it is desirable to avoid an increase in the speed of the air jet.
  • FIG. 1 is a longitudinal sectional side view of the conventional drying apparatus for sheets or web material using an air stream
  • FIGS. 2 to 7 show longitudinal sectional side views of the embodiments of the drying apparatus of this invention.
  • FIGS. 2 to 7 show the embodiments of this invention.
  • FIG. 2 there is shown the essential part of one embodiment of the drying apparatus of the invention in principle.
  • Reference numerals 20 and 21 illustrate blades extended at both sides of a slit 12, extending generally in parallel with the surface of the material 10.
  • the lengths of the blades 20 and 21 in the direction designated by arrow 15 may be properly selected, but the larger the size of the blades, the faster the speed. However, when the drying apparatus is contemplated to be compact, this length may be properly designed in relation with the size of the apparatus.
  • the widths of the blades 20 and 21 perpendicular to the arrow 15 may be generally similar to the length of the slit perpendicular to the arrow 15.
  • the air jet ejected from the slit 12 passes through the gaps 22 and 24 between the material 10 and the blades 20 and 21 to be expanded in the space at the end of the blades as shown by 23 and 25 in FIG. 2.
  • the air jet discharged from the slit 12 does not expand at once in the space, but expands after passing the long passages 22 and 24. Therefore, in comparison with the apparatus shown in FIG. 1, the time the air stream at high speed contacts with the surface of the material 10 becomes long with the result that the capability to sweep the liquid moisture on the surface of the material 10 and to dry the thin liquid film retained on the swept surface become quite large.
  • numerals 30 and 31 show a pair of feed rollers.
  • the roller 30 has flanges at both ends thereof, and the material 10 is driven interleaved between the flanges and the roller 31.
  • the roller surface 35 inside ther flange of the roller 30 does not contact the material 10. This condition is particularly important in case the material 10 has a toner image on an electrophotographic material. That is, it prevents the toner image from being damaged by minimizing contact with the roller 30.
  • the roller 32 maintains the distance between the surface of the material 10 and the slit constant similar to the roller 16 in FIG. 2.
  • the rollers 33 and 34 are a pair of feed roller having the same function as that of the rollers 30 and 31, respectively.
  • the roller 33 has flanges at both ends, and 36 shows the area inside the flanges.
  • the material isengaged with the flanges of the roller 33 and the roller 34 and fed in the direction designated by the arrow 15.
  • the blades and 21 extend front and rear on both sides thereof from the slit l2 and contact the rollers and 33, respectively in order to prevent the air from leaking at the gap between the blade 20 and the roller 30 or between the blade 21 and the roller 33. In practice, the air may be leaked.
  • the air supplied to the pipe 11 is ejected from the slit 12 to pass the gaps 22 and 24, and further through the gaps between the rollers 30 and 31, 33 and 34 and expanded in the free space as shown by 37 and 38 in the drawing.
  • the apparatus shown in FIG. 3 is particularly proper for the material 10 being in sheet state. The dimensions and an example of the operation will now be described with concrete reference to numerals thereof as this embodiment of the apparatus.
  • the outer diameters of the rollers 30 to 34 are 18 mm
  • the inside diameter of the rollers 30 and 33 and flanges or the diameter of the rollers and 36 in FIG. 3 are l6.6 mm
  • the thickness of the flange is 0.7 mm
  • the material of the rollers 30 to 34 being all stainless steel.
  • the inner diameter of the pipe 11 is 14 mm, the thickness thereof 1.5 mm and the material thereof brass.
  • the width of the slit 12 is 1 mm, the gap between the blades 20 and 21 and the surface of the material 10 being 2 mm.
  • the length of the lateral direction rightward and leftward of the blades 20 and 21 in the drawing are both 20 mm.
  • the material 10 was driven at a speed of 5 cm per second in the direction designated by arrow 15, and the air supply amount to the pipe 11 was 2,800 liters per minute. However, in order to prevent the air from being leaked laterally (vertically in the drawing), side walls are provided at both sides. Under such conditions, the electrophotographic material is preferably preferably. When the blades 20 and 21 were not provided, the drying was insufficient.
  • FIG. 4 shows the section of the essential part of another preferred embodiment of the drying apparatus of this invention.
  • Numeral 40 shows a drive roller for driving a web 41 around the roller, 41 a developer container, 43 a developing liquid filled therein, 44 and 45 are blades extended at both sides front and rear of the slit 12 parallel with the periphery of the roller 40, and
  • the 46 is a roller for changing the direction of the web.
  • the air ejected from the slit passes through the gaps 47 and 48 to be expanded in the space as shown by 49 in the drawing.
  • the width of the slit l2, gaps 47 and 48, and driving speed of the web are selected similar to the embodiment in FIG. 3, the preferred result is obtained.
  • FIG. 5 shows the section of the essential part of a further embodiment of the drying apparatus of this invention.
  • the apparatus shown in FIG. 5 has no corresponding blade 21 in FIG. 3. Instead, the pipe 11 contacts the roller 33 so as to reduce the air from being leaked between the gap of the pipe 11 and the roller 33.
  • the other functions and parts are the same as those in the embodiment shown in FIG. 3.
  • the object of this invention will be effectively performed by the apparatus which has only one blade at one side of the slit 12 as shown in FIG. 5.
  • the embodiment of FIG. 3 results in a better effect than that of FIG. 5.
  • FIG. 6 is the section of the essential part of still another embodiment of this invention.
  • Numeral indicates flanges provided at both ends of the pipe 61 similar to the pipe 11 shown in FIG. 3, the flanges being freely rotatable.
  • Numeral 62 is a slit provided at the lower end of the pipe 61 corresponding to the slit 12 in the drying apparatus shown in FIG. 3.
  • Numerals 63 and 64 are blades provided at both ends of the slit 62 corresponding to the blades 20 and 21 in FIG. 3.
  • the material 10 is depressed adjacent the roller 32 by the airjet ejected from the slit 12 but in FIG. 6, the material 10 is engaged by the flanges 60 and roller 32. Consequently, when the material 10 arrives under the slit, the possibility that the material 10 will prevent the turbulence of the air stream from passing through remote. More particularly, the drying apparatus in FIG. 6 is the embodiment where the passage of the material 10 becomes stable.
  • FIG. 7 shows the section of the essential part of still another embodiment of the drying apparatus of this invention.
  • This apparatus has symmetrical structure to the material 10 for drying both the front and rear surface of the material at the same time.
  • a drying apparatus comprising (1 at least one air supply means including (a) a slit for ejecting an air jet onto a material having a developed image on the surface to be dried, said slit being disposed transverse to the direction of movement of the material, has been inserted.
  • a drying apparatus as in claim 1 including a second air supply means symmetrically disposed on the side of said material opposite said at least one air supply means.
  • a drying apparatus comprising (l) at least one air supply means including (a) a slit for ejecting an air jet onto a material having a developed image on the surface to be dried, said slit being disposed transverse to the direction of movement of the material, has been inserted.
  • At least one blade plate extending from one side of the slit generally across the width of and in parallel with the surface to be dried, and (2) at least one pair of feed rollers for cayying the surface to be dried past the said slit, said pair of feed rollers being disposed on opposite sides of said material and adjacent one side of said slit the feed roller on the same side of said material as said blade plate having flanges at both ends thereof which contact said material at the approximate edges thereof to thereby prevent said material from contacting said blade plate so that said image cannot be damaged by contact with said blade plate, and where said air supplying means includes a rotatable flange disposed at each end of said slit to prevent said material from contacting said blade.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Wet Developing In Electrophotography (AREA)
US00188584A 1970-10-12 1971-10-12 Drying apparatus Expired - Lifetime US3805409A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970101349U JPS5210337Y1 (en, 2012) 1970-10-12 1970-10-12

Publications (1)

Publication Number Publication Date
US3805409A true US3805409A (en) 1974-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00188584A Expired - Lifetime US3805409A (en) 1970-10-12 1971-10-12 Drying apparatus

Country Status (9)

Country Link
US (1) US3805409A (en, 2012)
JP (1) JPS5210337Y1 (en, 2012)
AU (1) AU3448871A (en, 2012)
BE (1) BE773802A (en, 2012)
CA (1) CA953911A (en, 2012)
DE (1) DE2150796A1 (en, 2012)
FR (1) FR2111264A5 (en, 2012)
GB (1) GB1344685A (en, 2012)
NL (1) NL7113979A (en, 2012)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899137A (en) * 1974-12-17 1975-08-12 Martin Shenker Cleaning device for photo-slides
US3994443A (en) * 1976-02-09 1976-11-30 Martin Shenker Cleaning jaws for miniaturized objects
US5136323A (en) * 1990-12-28 1992-08-04 Eastman Kodak Company Apparatus for enhancing heat and mass transfer in a fluid medium
US5150955A (en) * 1990-12-28 1992-09-29 Eastman Kodak Company Drying apparatus
US5181329A (en) * 1990-12-28 1993-01-26 Eastman Kodak Company Drying apparatus
US5420673A (en) * 1992-07-09 1995-05-30 Nippon Steel Corporation Drying device for electrostatic recording apparatus
DE19817300A1 (de) * 1998-04-18 1999-10-21 Voith Sulzer Papiertech Patent Preßspalt
US6418289B1 (en) * 2000-11-29 2002-07-09 Xerox Corporation Drying device and method for drying ink on a medium
CN112393569A (zh) * 2020-11-09 2021-02-23 梁伟滨 一种纺织布料洗涤用初步脱水装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146442B2 (en, 2012) * 1972-12-18 1976-12-09
US4793074A (en) * 1988-01-07 1988-12-27 Eastman Kodak Company Dryer assembly for photographic paper
US5070628A (en) * 1990-01-16 1991-12-10 W. R. Grace & Co.-Conn. Rotatable slot nozzle air bar
DE4026616A1 (de) * 1990-08-23 1992-02-27 Agfa Gevaert Ag Vorrichtung zur reinigung oder entfeuchtung von bandfoermigem material
DE19949268C2 (de) * 1999-10-12 2001-09-13 Lenhardt Maschinenbau Vorrichtung zum Trocknen von gewaschenen Glastafeln

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222170A (en) * 1958-08-29 1965-12-07 Polaroid Corp Photographic process for forming a photosensitive article with a processing solution spread thereon
US3344729A (en) * 1964-06-22 1967-10-03 Itek Corp Photographic sheet material processing apparatus
US3372630A (en) * 1965-06-04 1968-03-12 Houston Schmidt Ltd Apparatus for processing light sensitive film
US3405627A (en) * 1965-08-17 1968-10-15 Itek Corp Film processor
US3437030A (en) * 1965-10-15 1969-04-08 Michael Mastrosimone Apparatus for removing film from a packet and developing,fixing,washing and drying the film
US3440944A (en) * 1964-02-15 1969-04-29 Keuffel & Esser Co Process and apparatus for the development of photocopying material
US3477356A (en) * 1967-05-04 1969-11-11 Peerless Photo Products Inc Photographic processing mechanism
US3559558A (en) * 1968-08-29 1971-02-02 Du Pont Rotary processing apparatus for photolithographic plates

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222170A (en) * 1958-08-29 1965-12-07 Polaroid Corp Photographic process for forming a photosensitive article with a processing solution spread thereon
US3440944A (en) * 1964-02-15 1969-04-29 Keuffel & Esser Co Process and apparatus for the development of photocopying material
US3344729A (en) * 1964-06-22 1967-10-03 Itek Corp Photographic sheet material processing apparatus
US3372630A (en) * 1965-06-04 1968-03-12 Houston Schmidt Ltd Apparatus for processing light sensitive film
US3405627A (en) * 1965-08-17 1968-10-15 Itek Corp Film processor
US3437030A (en) * 1965-10-15 1969-04-08 Michael Mastrosimone Apparatus for removing film from a packet and developing,fixing,washing and drying the film
US3477356A (en) * 1967-05-04 1969-11-11 Peerless Photo Products Inc Photographic processing mechanism
US3559558A (en) * 1968-08-29 1971-02-02 Du Pont Rotary processing apparatus for photolithographic plates

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899137A (en) * 1974-12-17 1975-08-12 Martin Shenker Cleaning device for photo-slides
US3994443A (en) * 1976-02-09 1976-11-30 Martin Shenker Cleaning jaws for miniaturized objects
US5136323A (en) * 1990-12-28 1992-08-04 Eastman Kodak Company Apparatus for enhancing heat and mass transfer in a fluid medium
US5150955A (en) * 1990-12-28 1992-09-29 Eastman Kodak Company Drying apparatus
US5181329A (en) * 1990-12-28 1993-01-26 Eastman Kodak Company Drying apparatus
US5315338A (en) * 1990-12-28 1994-05-24 Eastman Kodak Company Apparatus for enhancing heat and mass transfer in a fluid medium
US5420673A (en) * 1992-07-09 1995-05-30 Nippon Steel Corporation Drying device for electrostatic recording apparatus
DE19817300A1 (de) * 1998-04-18 1999-10-21 Voith Sulzer Papiertech Patent Preßspalt
US6418289B1 (en) * 2000-11-29 2002-07-09 Xerox Corporation Drying device and method for drying ink on a medium
CN112393569A (zh) * 2020-11-09 2021-02-23 梁伟滨 一种纺织布料洗涤用初步脱水装置
CN112393569B (zh) * 2020-11-09 2022-09-27 桐乡市法赛欧服饰有限公司 一种纺织布料洗涤用初步脱水装置

Also Published As

Publication number Publication date
AU3448871A (en) 1973-04-19
NL7113979A (en, 2012) 1972-04-14
GB1344685A (en) 1974-01-23
JPS5210337Y1 (en, 2012) 1977-03-05
CA953911A (en) 1974-09-03
DE2150796A1 (de) 1972-04-27
FR2111264A5 (en, 2012) 1972-06-02
BE773802A (fr) 1972-01-31

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