US3309960A - Photographic reproducing apparatus - Google Patents

Photographic reproducing apparatus Download PDF

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Publication number
US3309960A
US3309960A US436485A US43648565A US3309960A US 3309960 A US3309960 A US 3309960A US 436485 A US436485 A US 436485A US 43648565 A US43648565 A US 43648565A US 3309960 A US3309960 A US 3309960A
Authority
US
United States
Prior art keywords
strip
plate
sheet
objective
image
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
US436485A
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English (en)
Inventor
Delplanque Marcel Lo Alexandre
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3309960A publication Critical patent/US3309960A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/025—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between belts and rotary means, e.g. rollers, drums, cylinders or balls, forming a transport nip
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/58—Baseboards, masking frames, or other holders for the sensitive material
    • G03B27/587—Handling photosensitive webs
    • 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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/26—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is obtained by projection of the entire image, i.e. whole-frame projection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4443—Unicyclic

Definitions

  • This invention relates to a photographic reproducing apparatus including a simple arrangement adapted to feed automatically sheets of photosensitive paper of a predetermined size, which sheets are brought in succession into the plane of image formation of the objective and held during exposure under perfectly flat conditions after which they are removed.
  • the improved reproducing apparatus includes means feeding photosensitive sheets into the focal plane and ensuring their subsequent removal, said means including an endless conveying strip trained around a driving roller and a transmission roller preferably in a stretched condition and made of a material adapted to retain charges of static electricity, said conveying strip being associated with further means adapted to transmit electric charges thereto so that, as well known per se, electrostatic attraction may hold the sheets on the strip surface facing the objective.
  • a stationary carrier plate made of a material adapted to receive and retain electrostatic charges suflicient for bolding the strip in contact with the plate.
  • FIGS. 1 and 2 are diagrammatic sectional elevational views of subsequent stages of operation of an apparatus in accordance wit-h the invention.
  • the actual conveying means include an endless conveying strip 9 made of a yielding plastic material such as plasticised polyvinyl chloride adapted to receive and retain electrostatic charges. It is held in a stretched condition between a driving roller 8 associated with a roller 7 and a transmission roller 6.
  • a roller 5 is arranged in registry with the roller 6 and cooperates with the strip 9 so as to ensure the tensioning of the end of the strip of paper laid over the conveyor strip.
  • a cut-ting tool is provided between the pairs of rollers, 3, 4 and 5, 6, respectively, so as to cut off the desired length of paper from the continuous sheet 2 the free end of which is permanently engaged between the rollers 3 and 4.
  • a stationary plate 10 made of a plastic material (e.g. nonplasticized polyvinyl chloride) adapted when subjected to friction by the strip 9 to produce a charge of static electricity.
  • a plastic material e.g. nonplasticized polyvinyl chloride
  • the driving rollers 4 and 8 are rotated both at the same speed by corresponding driving means (not shown) controlled each by a cam closing a switch (neither shown) during a predetermined period.
  • the cam may be adjusted in a known manner in accordance with the desired length of paper to be used for print.
  • Such arrangements may be used advantageously in photoprinting machines, adapted to reproduce documents of different sizes; the document such as that illustrated at 15 is exposed in front of an objective 12 over a glass plate 13 and is properly positioned thereon by the reglet 14 so that the edge 16 of the document 15 engaging the latter may be projected at 16a onto the edge 10a of the plate 10.
  • the length of paper conveyed onto the plate 10 should be substantially equal to the length of the image of the document 15.
  • the rear edge 18a of the cut off section of sheet of paper 18 should be substantially in registry with the image 17a of the edge 17 of the document opposed to the edge 16.
  • the controlling cams being previously adjusted in a manner depending on the length of the document 15 positioned by the reglet 14, the driving means is started, and the driving rollers 4 and 8 begin rotating.
  • the free end 1a of the strip 2 cut off by the cutting tool 20 during the preceeding operative stage (FIG. 2) is driven forwardly between the rollers 3 and 4 and engages the clearance between the roller 5 and the endless conveying strip 9 progressing under the action of the driving roller 8.
  • the lower or back face of flight 9a of the conveying strip 9 engages frictionally the plate 10 and is loaded thus with static electricity.
  • This charge exerts an attraction on the strip of paper so that the latter is held intimately in contact with the upper or front face of flight 9a which is in its turn held in a perfectly flat condition by the plate 10 which subjects it similarly to an electrostatic attraction.
  • the control system for the cutting mechanism of the apparatus is designed in a manner well known per se.
  • the control cam associated with the driving roller 4 causes the latter to stop and, at the same time, operates the cutting tool 20' when the desired length of paper has passed in front of the latter.
  • the sheet 2 unwinding from supply roll 1 is thus stopped instantaneously while a sheet of paper 18, cut off the continuous sheet 2 by the cutting tool, continues progressing between the rollers 5 and 6 and then onto the conveying strip 9 on which it is held in a flat condition, as disclosed hereinabove.
  • the cam controlling the rotation of the driving roller 8 is designed in a manner such as to stop the latter when the end 18b of said sheet of paper reaches a position registering with the end of the plate 10 on which is formed the image of the extreme edge of the glass plate 13 defined by the reglet 14.
  • the photosensitive paper sheet 18 is thus ready to receive the image of the document 15.
  • the sheet of paper 18 has been conveyed in an accurate manner without any possibility of a relative sliding with reference to the flight 9a of the conveying strip 9 by reason of the electrostatic adherence produced and furthermore said conveying strip and consequently the sheet of paper 18 remain perfectly flat in the plane of image formation of the objective 12 by reason of the same phenomenon which holds the strip 9 in intimate contact with the electrostatic plate 10.
  • a photographic reproducing apparatus including an objective projecting an image of the matter to be reproduced, comprising an endless conveying strip adapted to retain electrostatic charges and having one flight extending substantially in the plane of image formation of said objective, said flight having a front face confronting said objective and a back face, said strip adapted to carry on said front face a photosensitive sheet into the area where said image is formed, means for temporarily affixing said sheet to said strip by electrostatic attraction, a stationary carrier plate, one face of which extending parallel and immediately adjacent said back face, said plate adapted to receive and retain electrostatic charges, means to electrostatically charge said plate and said strip to cause adherence by electrostatic attraction between said plate and said back face of said flight on one hand and between said front face of said flight and said photosensitive sheet on the other hand, said adherence taking place at least in the area where said image is formed.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Advancing Webs (AREA)
US436485A 1964-04-21 1965-03-02 Photographic reproducing apparatus Expired - Lifetime US3309960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR971754A FR1401351A (fr) 1964-04-21 1964-04-21 Dispositif transporteur pour feuille de papier ou similaire

Publications (1)

Publication Number Publication Date
US3309960A true US3309960A (en) 1967-03-21

Family

ID=8828316

Family Applications (1)

Application Number Title Priority Date Filing Date
US436485A Expired - Lifetime US3309960A (en) 1964-04-21 1965-03-02 Photographic reproducing apparatus

Country Status (10)

Country Link
US (1) US3309960A (de)
AT (1) AT256630B (de)
BE (1) BE662164A (de)
CH (1) CH423455A (de)
DK (1) DK109183C (de)
ES (1) ES311892A1 (de)
FR (1) FR1401351A (de)
GB (1) GB1097437A (de)
NL (1) NL6503157A (de)
SE (1) SE338500B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357325A (en) * 1965-10-22 1967-12-12 Xerox Corp Xerographic transfer apparatus
US3399610A (en) * 1965-10-22 1968-09-03 Xerox Corp Xerographic apparatus
US3418047A (en) * 1966-03-04 1968-12-24 Addressograph Multigraph Copy making apparatus
US3437336A (en) * 1966-04-28 1969-04-08 Meteor Siegen Apparat Schmeck Transport system for single sheets of photosensitive material
US3511564A (en) * 1967-05-18 1970-05-12 Bell & Howell Co Reader-printer with plastic transport belt
US3539257A (en) * 1968-02-14 1970-11-10 Minnesota Mining & Mfg Document photographing machine
US3584733A (en) * 1967-09-15 1971-06-15 Meteor Siegen Apparat Schmeck Transport system for single sheets of photosensitive material
US3651727A (en) * 1967-10-02 1972-03-28 Ricoh Kk Electrophotographic duplicator in which copy paper is cut to the length of the original
US3689146A (en) * 1969-05-02 1972-09-05 Canon Kk Electrophotographic copying machine
US3690759A (en) * 1966-04-18 1972-09-12 Minolta Camera Kk Electronic photocopying machine
US3736855A (en) * 1971-03-08 1973-06-05 E Cuenca Visual typesetter
US3893800A (en) * 1973-11-14 1975-07-08 Rank Xerox Ltd Backside heating and fixing apparatus in an electronic photograph duplicator
FR2589592A1 (fr) * 1985-10-31 1987-05-07 Petrovic Rade Dispositif d'agrandissement du format de tirage adaptable sur machines automatiques et semi-automatiques a developpement rapide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2621404B2 (fr) * 1987-07-09 1993-12-03 Milovanovich Andre Une nouvelle transmission dans le traitement d'images en photographie dans le sens general et applications

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576882A (en) * 1946-09-04 1951-11-27 Hartford Nat Band And Trust Co Device for conveying paper and similar substances
US3164074A (en) * 1959-06-24 1965-01-05 Caribonum Ltd Electrophotographic reproduction machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576882A (en) * 1946-09-04 1951-11-27 Hartford Nat Band And Trust Co Device for conveying paper and similar substances
US3164074A (en) * 1959-06-24 1965-01-05 Caribonum Ltd Electrophotographic reproduction machines

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399610A (en) * 1965-10-22 1968-09-03 Xerox Corp Xerographic apparatus
US3357325A (en) * 1965-10-22 1967-12-12 Xerox Corp Xerographic transfer apparatus
US3418047A (en) * 1966-03-04 1968-12-24 Addressograph Multigraph Copy making apparatus
US3690759A (en) * 1966-04-18 1972-09-12 Minolta Camera Kk Electronic photocopying machine
US3437336A (en) * 1966-04-28 1969-04-08 Meteor Siegen Apparat Schmeck Transport system for single sheets of photosensitive material
US3511564A (en) * 1967-05-18 1970-05-12 Bell & Howell Co Reader-printer with plastic transport belt
US3584733A (en) * 1967-09-15 1971-06-15 Meteor Siegen Apparat Schmeck Transport system for single sheets of photosensitive material
US3651727A (en) * 1967-10-02 1972-03-28 Ricoh Kk Electrophotographic duplicator in which copy paper is cut to the length of the original
US3539257A (en) * 1968-02-14 1970-11-10 Minnesota Mining & Mfg Document photographing machine
US3689146A (en) * 1969-05-02 1972-09-05 Canon Kk Electrophotographic copying machine
US3736855A (en) * 1971-03-08 1973-06-05 E Cuenca Visual typesetter
US3893800A (en) * 1973-11-14 1975-07-08 Rank Xerox Ltd Backside heating and fixing apparatus in an electronic photograph duplicator
FR2589592A1 (fr) * 1985-10-31 1987-05-07 Petrovic Rade Dispositif d'agrandissement du format de tirage adaptable sur machines automatiques et semi-automatiques a developpement rapide

Also Published As

Publication number Publication date
DK109183C (da) 1968-03-25
BE662164A (de) 1965-08-02
GB1097437A (en) 1968-01-03
SE338500B (de) 1971-09-06
AT256630B (de) 1967-08-25
FR1401351A (fr) 1965-06-04
ES311892A1 (es) 1965-08-16
NL6503157A (de) 1965-10-22
CH423455A (fr) 1966-10-31

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