US3726023A - Web drier - Google Patents
Web drier Download PDFInfo
- Publication number
- US3726023A US3726023A US00094790A US3726023DA US3726023A US 3726023 A US3726023 A US 3726023A US 00094790 A US00094790 A US 00094790A US 3726023D A US3726023D A US 3726023DA US 3726023 A US3726023 A US 3726023A
- Authority
- US
- United States
- Prior art keywords
- web
- chamber
- housing
- warm air
- drier
- 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
Links
Images
Classifications
-
- 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
- G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
- G03D13/002—Heat development apparatus, e.g. Kalvar
Definitions
- a drier for sheet-shaped photographic web materials has a housing in which first and second transport rol- [30] Foreign Application Priority Data lers are located for engaging the web at opposite major surfaces thereof to advance it in a predeter- Dec. 10,1969 Germany ..P 1961 873.6 mined path o or more blowers i associated heating devices are provided for blowing warm air (g1. ..34/151, 34/ towards one of the major Surfaces f.
- the present invention relates generally to a drier, and particularly to a web drier. Still more specifically the invention relates to a drier for photographic materials, especially sheet-shaped photographic materials.
- driers of the general type under discussion in which the photographic materials to be dried are passed between engaging rollers which transport them in a predetermined path, and in which streams of warm air are blown against the material to be dried. They are particularly well suited for use in conjunction with a developer device in which the materials pass through the developer apparatus in a straight usually at least substantially horizontal path, and in which their major upper and lower surfaces are treated with developer fluid. Subsequently the developed photographic material then passes through the associated web drier in which conventionally tubes or conduits have been provided which are arranged symmetrically with reference to the layer of the web to be dried and provided with slots through which warm air is blown at the web.
- a concomitant object of the invention is to provide such an improved web drier which, because of its simplicity, is highly reliable in its operation.
- a web drier which, briefly stated, comprises a housing and first and second transport rollers mounted in the housing for engaging a web at opposite major surfaces thereof to thereby advance it in a predetermined path.
- Supply means supply at least one stream of warm air which is directed towards one of the major surfaces of the web.
- Perforate wall means defines intermediate the supply means and the one major surface, proximal to the latter, a chamber extending at least substantially over the cross-sectional area of the housing and having in direction of flow of the stream of warm air a dimension which is substantially smaller than its dimensions transversely to this direction, so that the warm air leaves the chamber substantially evenly distributed over substantially the entire crosssectional area of the housing.
- FIG. I is a vertical somewhat diagrammatic section through an apparatus according to the present invention.
- FIG. 2 is a section taken on line II-II of FIG. 1.
- reference numeral 1 in FIG. 1 identifies a frame for the apparatus according to the present invention, which may for instance be composed of a plurality of square cross-section tubes or the like.
- the device comprises a web drier 2 having an inlet opening 3.
- a developing station By the time the film or web to be treated has reached the inlet opening 3 of the apparatus 2, it has alreadypassed through a developing station, a fixing station and watering station.
- These various stations maybe of any construction known from the art, for instance they may be constructed according to the teaching of German Pat. No. 1,293,586. In themselves they do not form part of the present invention and have been mentioned here only to provide background information on the treatment which the web will have undergone before it reaches the inventive web drying apparatus 2 according to the present invention.
- the length of the path be kept as short as possible because it, added to the length of the path which the web traverses in the preceding stations, determines the overall horizontal length of the total apparatus; evidently, the shorter the total apparatus can be kept in horizontal direction, the better it will be because the apparatus will require less floor space which is frequently at a premium.
- the web drier comprises five pairs of transport rollers, each pair having an upper transport roller 4 and a lower transport roller 5. At least one roller of each pairthat is either the roller 4 or the roller 5-is driven by means of a suitable drive, for instance a worm drive or the like.
- the rollers are mounted in mounting elements 6 which at the same time constitute the lateral walls of the drying chamber 13 defined by the overall housing of the device 2.
- the rollers themselves may be made of various different materials, for instance of hard paper, and contact one another only under the weight of the uppermost roller 4 of each pair.
- the web to be dried advances between the rollers 4 and 5 of each pair in a path which in the illustrated embodiment is horizontal, but which could also be somewhat different, that is be only substantially horizontal.
- a perforated sheet material wall 7 which extends over the entire cross-sectional area of the housing. It is advantageously constituted by a commercially available perforated sheet metal member provided with quadratic openings arranged in an even pattern, with the combined crosssectional area of the openings being not in excess of half of the total cross-sectional area of the member 7.
- a chamber 8 whose height is approximately equal to the diameter of the rollers 4 or 5. It, also, extends over the entire cross-sectional area of the housing, that is of the chamber 13.
- FIG. 2 shows particularly clearly, those edge regions of the chamber 8 which are lateral with respect to the direction of advancement of the web, that is which are located at opposite sides of the path traversed by the web, the chamber 8 is connected via slightly divergent channels 9 and 10, and curved guide baffles 9a and 10a, with the discharge openings of respective blowers l1 and 12.
- the channels 9 and 10 have relatively large cross-sectional areas and therefore the blowers 11 and 12 are capable of turning over large quantities of air into the chamber 8, at relatively low energy requirements and against low back pressure.
- the air is very evenly distributed over the entire cross-sectional area of the member 7 and therefore of the chamber 13, and rises from the apertures of the member 7 at relatively low speeds and in substantially nonnal direction with reference to the plane of the web, to impinge upon the downwardly directed major surface thereof.
- the impingement is almost vertical and as a consequence the impinging air is deflected laterally to the edges of the web in the presence of a web; of course, if a web is momentarily not present the air will simply pass upwardly between the rollers.
- the diameter of the rollers 4 and 5 is reduced to the configuration identified at 4a and 5a which is just sufficient for withstanding the mechanical forces acting upon the rollers, so that a sufficiently large flow space exists for flowing of the air from the underside to the upperside and to the upwardly directed major surface of the web.
- the width of this space corresponds to at least one roller diameter.
- Outlet means is provided, in the illustrated embodiment in form of an outlet slot 15 which is located above the discharge opening 14 for the web, and the upwardly deflected air moves in concomitant movement with the web until it reaches the slot 15 which is provided in the other cover 17 of the chamber 13. From the slot 15 the air moves into a distributing chamber 16 which is separated by the cover 17 from the chamber 13, handles 18 and 19 being provided for facilitating removal of the cover 17 for inspection and cleaning purposes.
- a similarly removable cover 20 is provided which closes the distributor chamber 16 and can be withdrawn for inspection, cleaning and the like.
- the cover 20 is provided with apertures 20a which communicate with the ambient atmosphere so that some of the air emitted through the slot 15 can escape to the exterior of the device.
- the largest portion of the moist air leaving the chamber 13 through the slot 15 will flow along the lateral walls bounding the chamber 16 and from there downwardly through the passages P in the direction indicated by the arrows (see FIGS. 1 and 2) until it reaches the inlet of the blowers 11 and 12.
- Heating devices are provided upstream of the blowers 11 and 12 which are controlled by a temperature sensor 21 located in the chamber 8, so that the temperature of the air supplied by the blowers 11 and 12 is automatically maintained at the desired value which can of course be adjusted as required.
- the arrangement of the heating devices upstream of the blowers 11 and 12 has the advantage that even if the air is unevenly heated in the heating device, it becomes thoroughly admixed in the blowers 11 and 12 before it is supplied to the chamber 8 so that uneven heating is compensated.
- the air aspirated by the blowers 11 and 12 is a mixture of fresh air aspirated from the exterior of the device, and of the air which has entered the chamber 16 through the slot 15 from the chamber 13.
- the advantage of drying with air which is moister than the ambient air outside the apparatus is that the drying obtained in this manner is very even and is conformed to the throughput speed of the web, if a sufficiently large quantity of such air can be passed along the upper surface of the web to be dried, as is the case in the apparatus according to the present invention.
- rollers 4 and 5 have an influence upon the drying efiect, inasmuch as their surfaces pick up droplets adhering to the major surfaces of the web and inasmuch as the thus picked up liquid is quickly returned into the airstream due to the higher temperature of the roller surfaces.
- contact of the surfaces of the rollers at elevated temperature with the web facilitates heating and drying of the web.
- the invention is not limited to the embodiment which has been illustrated herein for purposes of explanation. It is possible, for instance, to make the chamber 13 substantially lower so that the cover 17 would be located only a very small distance above the upper rollers 4. Should this be the case, then the outlet slot would have to be located in the middle of the device, that is in the middle of the path which is being traversed by the web, so that the warm air would move along the upper surface of the web in axial direction of the rollers to the middle of the path, and would be emitted from there.
- cover 20 a portion 20b which cooperates with projections on the frame 1 to constitute a labyrinth seal preventing an overflowing of the moist warm air into the wet treating station of the overall device, with such wet-treating station not being a part of the present invention.
- a web drier particularly for sheet-shaped photographic materials, comprising a housing having an inlet and a discharge opening for webs to be dried; first and second transport rollers in said housing for engaging a web at opposite major surfaces thereof to thereby advance the web in a predetermined path from said inlet to said discharge opening; supply means for supplying at least one stream of warm air directed towards one of said major surfaces; perforate wall means defining intermediate said supply means and said one major surface, proximal to the latter, a chamber extending at least substantially over the cross-sectional area of said housing and having in direction of flow of said stream of warm air a dimension which is substantially smaller than its dimension transversely to said direction, so that the warm air leaves said chamber substantially evenly distributed over substantially the entire cross-sectional area of said housing; and air outlet means in form of at least one slot located above said discharge penin 2.
- said pe orate wall means comprising sheet-metal walls provided with evenly distributed perforations.
- a web drier as defined in claim 1 said rollers being positioned for advancing said web in a substantially horizontal path, and wherein said chamber is located downwardly of and below said path.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Drying Of Solid Materials (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
- Photographic Developing Apparatuses (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691961873 DE1961873C3 (de) | 1969-12-10 | Trockenvorrichtung für fotografische, insbesondere blattförmige Schichtträger | |
US10365471A | 1971-01-04 | 1971-01-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3726023A true US3726023A (en) | 1973-04-10 |
Family
ID=25758224
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00094790A Expired - Lifetime US3726023A (en) | 1969-12-10 | 1970-12-03 | Web drier |
US103654A Expired - Lifetime US3648019A (en) | 1969-12-10 | 1971-01-04 | Developer |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US103654A Expired - Lifetime US3648019A (en) | 1969-12-10 | 1971-01-04 | Developer |
Country Status (6)
Country | Link |
---|---|
US (2) | US3726023A (nl) |
BE (1) | BE759262A (nl) |
CH (1) | CH530035A (nl) |
FR (1) | FR2072641A5 (nl) |
GB (1) | GB1338411A (nl) |
NL (1) | NL172991C (nl) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4779356A (en) * | 1986-04-03 | 1988-10-25 | Agfa-Gevaert Aktiengesellschaft | Dryer for photosensitive material |
US5475788A (en) * | 1992-09-04 | 1995-12-12 | Oce'-Nederland, B.V. | Radiation fixing device with natural convection airflow |
US5788803A (en) * | 1996-10-16 | 1998-08-04 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus with controllable preheating |
US5837974A (en) * | 1996-10-16 | 1998-11-17 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods |
US5847362A (en) * | 1996-10-16 | 1998-12-08 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus providing controllable heat and related methods |
US5902502A (en) * | 1996-10-16 | 1999-05-11 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus and related methods |
US10184897B2 (en) | 2014-04-04 | 2019-01-22 | Packaging Corporation Of America | System and method for determining an impact of manufacturing processes on the caliper of a sheet material |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3825407A (en) * | 1971-12-27 | 1974-07-23 | Fuji Xerox Co Ltd | Heater holding bracket for a heat fixer in a copying machine or the like |
US4009034A (en) * | 1973-07-09 | 1977-02-22 | Xerox Corporation | Dry film processing |
US3902041A (en) * | 1973-07-09 | 1975-08-26 | Xerox Corp | Dry film processing apparatus |
US3974358A (en) * | 1975-01-10 | 1976-08-10 | Teckton, Inc. | Portable food heating device |
SU1023482A1 (ru) * | 1979-07-31 | 1983-06-15 | Коммунарский горно-металлургический институт | Устройство дл ремонта кабелей |
GB8815040D0 (en) * | 1988-06-24 | 1988-08-03 | Fibre Treatments Ltd | Heat treatment device |
US5352863A (en) * | 1992-04-03 | 1994-10-04 | Minnesota Mining And Manufacturing Company | Flat bed thermophotographic film processor |
US5869806A (en) * | 1996-02-02 | 1999-02-09 | Imation Corp. | Apparatus and method for thermally processing an imaging material employing means for bending the imaging material during thermal processing |
US5849388A (en) * | 1996-02-02 | 1998-12-15 | Imation Corp. | Article, apparatus and method for cooling a thermally processed material |
US5869807A (en) * | 1996-02-02 | 1999-02-09 | Imation Corp. | Apparatus and method for thermally processing an imaging material employing improved heating means |
BE1010388A4 (nl) * | 1996-06-26 | 1998-07-07 | Agfa Gevaert Nv | Fotothermografisch ontwikkelsysteem. |
US5895592A (en) * | 1996-12-19 | 1999-04-20 | Imation Corp. | Apparatus and method for thermally processing an imaging material employing a system for reducing fogging on the imaging material during thermal processing |
US5986238A (en) * | 1996-12-19 | 1999-11-16 | Imation Corporation | Apparatus and method for thermally processing an imaging material employing means for reducing fogging on the imaging material during thermal processing |
US7317468B2 (en) * | 2005-01-05 | 2008-01-08 | Carestream Health, Inc. | Thermal processor employing drum and flatbed technologies |
CN104048779B (zh) * | 2014-05-30 | 2016-07-06 | 合肥京东方光电科技有限公司 | 一种测温样本制作治具和制作设备 |
US11124161B2 (en) * | 2018-01-26 | 2021-09-21 | Robert Anthony Orazem | Heated license plate system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1054024B (de) * | 1953-04-24 | 1959-03-26 | Tromag Trockenapp Und Maschb G | Einetagen-Flachbahntrockner fuer Furniere |
US3254426A (en) * | 1962-05-14 | 1966-06-07 | Cardel Electric Co Inc | Air-jet dryer for printed material |
US3308555A (en) * | 1963-04-13 | 1967-03-14 | Internat Copying Machines Co M | Drier particularly for photographic sheet material |
US3405456A (en) * | 1967-06-16 | 1968-10-15 | Taylor Publishing Co | Film dryer |
US3434225A (en) * | 1967-09-05 | 1969-03-25 | Logetronics Inc | Drier for film processors |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2794104A (en) * | 1955-07-29 | 1957-05-28 | Nathan Frederick | Photoengraving burning-in apparatus |
DE1598754A1 (de) * | 1965-07-10 | 1970-12-03 | Merck Patent Gmbh | Erhitzungsofen fuer Schichtchromatogramme |
US3501635A (en) * | 1968-05-01 | 1970-03-17 | Scripto Inc | Portable thermographic copying machine with photoelectric means to activate the heat lamp thereof upon insertion of a specimen into the machine |
US3575580A (en) * | 1970-01-29 | 1971-04-20 | Minnesota Mining & Mfg | Portable themographic duplicator mounted in a carrying case having hinged housing portions |
-
0
- BE BE759262D patent/BE759262A/nl not_active IP Right Cessation
-
1970
- 1970-11-24 NL NLAANVRAGE7017188,A patent/NL172991C/nl not_active IP Right Cessation
- 1970-11-30 FR FR7042968A patent/FR2072641A5/fr not_active Expired
- 1970-12-03 US US00094790A patent/US3726023A/en not_active Expired - Lifetime
- 1970-12-07 CH CH1803370A patent/CH530035A/de not_active IP Right Cessation
- 1970-12-10 GB GB5882170A patent/GB1338411A/en not_active Expired
-
1971
- 1971-01-04 US US103654A patent/US3648019A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1054024B (de) * | 1953-04-24 | 1959-03-26 | Tromag Trockenapp Und Maschb G | Einetagen-Flachbahntrockner fuer Furniere |
US3254426A (en) * | 1962-05-14 | 1966-06-07 | Cardel Electric Co Inc | Air-jet dryer for printed material |
US3308555A (en) * | 1963-04-13 | 1967-03-14 | Internat Copying Machines Co M | Drier particularly for photographic sheet material |
US3405456A (en) * | 1967-06-16 | 1968-10-15 | Taylor Publishing Co | Film dryer |
US3434225A (en) * | 1967-09-05 | 1969-03-25 | Logetronics Inc | Drier for film processors |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4779356A (en) * | 1986-04-03 | 1988-10-25 | Agfa-Gevaert Aktiengesellschaft | Dryer for photosensitive material |
US5475788A (en) * | 1992-09-04 | 1995-12-12 | Oce'-Nederland, B.V. | Radiation fixing device with natural convection airflow |
US5788803A (en) * | 1996-10-16 | 1998-08-04 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus with controllable preheating |
US5837974A (en) * | 1996-10-16 | 1998-11-17 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods |
US5847362A (en) * | 1996-10-16 | 1998-12-08 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus providing controllable heat and related methods |
US5902502A (en) * | 1996-10-16 | 1999-05-11 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus and related methods |
US10184897B2 (en) | 2014-04-04 | 2019-01-22 | Packaging Corporation Of America | System and method for determining an impact of manufacturing processes on the caliper of a sheet material |
Also Published As
Publication number | Publication date |
---|---|
DE1961873A1 (de) | 1971-06-16 |
NL7017188A (nl) | 1971-05-25 |
BE759262A (nl) | 1971-05-24 |
DE1961873B2 (de) | 1977-04-07 |
US3648019A (en) | 1972-03-07 |
GB1338411A (en) | 1973-11-21 |
FR2072641A5 (nl) | 1971-09-24 |
NL172991C (nl) | 1983-11-16 |
CH530035A (de) | 1972-10-31 |
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