US3685904A - Copying apparatus - Google Patents

Copying apparatus Download PDF

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Publication number
US3685904A
US3685904A US853031A US3685904DA US3685904A US 3685904 A US3685904 A US 3685904A US 853031 A US853031 A US 853031A US 3685904D A US3685904D A US 3685904DA US 3685904 A US3685904 A US 3685904A
Authority
US
United States
Prior art keywords
web
carrier
image field
abutment
guide
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
US853031A
Other languages
English (en)
Inventor
Olof Kring
Stig G J Yngve
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.)
Gitson System AB
Original Assignee
Gitson System AB
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 Gitson System AB filed Critical Gitson System AB
Application granted granted Critical
Publication of US3685904A publication Critical patent/US3685904A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • arrier is capable of being 5 at an amplitude which ing of a means for deterge field on the web so that ng each cycle of movement the length of the image last exposed in the longitudinal direction of the web
  • a copying apparatus for continuousl 6 images on a we G03) 27/58 B6 apparatus is characterized by a web feed means which f includes a carrier member adapted to engage the web Fleld of Search in the feed direction. The c moved backwards and forward may be changed by the sett mining the size of the ima the feeding distance, duri of the carrier, is equal to den [22] Filed: Aug. 26, 1969 [21] Appl. No.: 853,031
  • the object of the present invention is to fulfill the aforementioned requirement and in accordance therewith there is provided an apparatus which is mainly characterized by a web advance means which includes a carrier member adapted to engage the web in the feed direction and which is capable of being moved backwards and forwards at an amplitude capable of being changed by the setting of a means adapted to determine the size of the image field on the web in such a way that the feeding distance during each cycle movement of the carrier is equal to the length of the image last exposed in the longitudinal direction of the web and possibly also-a length of unexposed web for necessary outwardly projecting edge portions.
  • a web advance means which includes a carrier member adapted to engage the web in the feed direction and which is capable of being moved backwards and forwards at an amplitude capable of being changed by the setting of a means adapted to determine the size of the image field on the web in such a way that the feeding distance during each cycle movement of the carrier is equal to the length of the image last exposed in the longitudinal direction of the web and possibly also-a length of
  • FIGS. 1 and 2 are so called X-ray front and rear views in perspective of a copying apparatus according to the invention and FIG. 3 is a section taken through the line IIIIIl in FIG. 2.
  • the exemplary embodiment of the copying apparatus of the invention is provided with a magazine 1 for storage rolls 2 of copying paper or other copying material.
  • the storage reels 2 have different widths and are mounted on shafts (not shown) so that a web 3 of copying paper can be passed from anyone of the reels 2, over a guide roller 4 up to a copying platen 5.
  • the web 3 is then passed over a guide roller 6 and is taken up on a winding spool 7, which is driven by an electric motor 8 via a V-belt 9.
  • the electric motor is only capable of winding in advanced lengths of the web and maintaining the tension therein.
  • the web is fed through the apparatus by means of an intermittently functioning feed means, which comprises a carrier or transport device 10 mounted on one end of a single-arm lever 11 joumalled on a shaft 12.
  • the drive bar 14 of a double-action hydrostatic diaphragm motor 15 is supported on a stud 13 arranged on the lever arm and forming part of a studand -slot connection arrangement.
  • Each side of the diaphragm is connected alternately over conduits 16 and 17 to the pressure in the water line, the rod or bar 14, which is connected with the center point of the diaphragm, being imparted a reciprocatory movement which is transmitted to the lever arm 11 by means of rollers 18 and 19.
  • the conduits 16 and 17 are connected to a valve (not shown), which can be adjusted automatically after each exposure of the image to be copied. Lateral movement of the lever arm is guided by a guide structure 20. The amplitude of the movement is restricted by an abutment member 21 which has two positions of adjustment and an abutment member 22 which can be adjusted to abitrary positions between its two end positions.
  • the carrier 10 comprises two elements 23 and 24 which are movable in relation to each other, of which elements one, 23, is arranged above the web and the other, 24, is located beneath the web. During feeding movement of the carrier 10, the element 24 is held urged against the element 23 by means of a magnetic force, in a conventional manner so as to engage the web and thereby move the same.
  • a curtain 33 capable of being attached to the strip 27 and which runs over a roller 34 so as to constantly accompany the strip as it is adjusted.
  • the adjustable masking strip 27 is pivotally connected to a slide 35, which is mounted on two guides 36 disposed parallel with the web 3.
  • the slide is in threaded engagement with a lead screw 37 which is mounted in two attachments 38 and provided with a wheel 39 by which it can be rotated.
  • the slide 35 carries a rod 40 extending parallel with the direction of movement and mounted in one attachment 38 and supporting the abutment 22.
  • the abutment 22 accompanies the masking strip 27 when said strip is adjusted, thereby changing the amplitude of the carrier 10, so that said amplitude coincides with the length of the image last exposed. In this way there is obtained a feed rate which constantly coincides with the amount of paper consumed.
  • an unexposed portion i.e.
  • the abutment 21 can be adjusted in two separate positions, in one position of which a white edge is obtained on the copy while in the other position no white edge is obtained.
  • the web is taken instead from one of the remaining reels in the magazine 1 and the guide strips 29 moved accordingly.
  • the feed means may comprise any reciprocating carrier means, the amplitude of which can be altered by the size of the image field. Similarly adjustment of the image field can be transmitted to the feed means in a manner different to that described.
  • the means for moving comprises a lever arm having a free end mounted at a distance from the web, the free end carrying the carrier, the lever arm being connected with a motor which delivers an alternating movement.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Advancing Webs (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
US853031A 1968-09-03 1969-08-26 Copying apparatus Expired - Lifetime US3685904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE11857/68A SE324286B (enrdf_load_stackoverflow) 1968-09-03 1968-09-03

Publications (1)

Publication Number Publication Date
US3685904A true US3685904A (en) 1972-08-22

Family

ID=20294740

Family Applications (1)

Application Number Title Priority Date Filing Date
US853031A Expired - Lifetime US3685904A (en) 1968-09-03 1969-08-26 Copying apparatus

Country Status (3)

Country Link
US (1) US3685904A (enrdf_load_stackoverflow)
GB (1) GB1233115A (enrdf_load_stackoverflow)
SE (1) SE324286B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202624A (en) * 1978-09-15 1980-05-13 Kreonite Inc. Masking device for cropping photographs viewed on a view screen of a photographic printer
US4557617A (en) * 1983-11-04 1985-12-10 Kroy, Inc. Tape supply cartridge

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1309471A (en) * 1919-07-08 Picture films
FR561820A (fr) * 1923-02-05 1923-10-29 Appareil pour la fabrication des ressorts spirales
US2035558A (en) * 1935-09-20 1936-03-31 Haloid Co Photocopy machine
US2099681A (en) * 1935-05-09 1937-11-23 Rupert H Draeger Camera indexing mechanism
US2496329A (en) * 1945-09-14 1950-02-07 Remington Rand Inc Variable film exposure aperture and film feed
US2891443A (en) * 1957-01-24 1959-06-23 Eastman Kodak Co Photographic color printer
US2944752A (en) * 1957-07-02 1960-07-12 Schwartz Sol Machine for packing pile fabrics
US3520459A (en) * 1967-09-29 1970-07-14 Texas Instruments Inc Tape advance system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1309471A (en) * 1919-07-08 Picture films
FR561820A (fr) * 1923-02-05 1923-10-29 Appareil pour la fabrication des ressorts spirales
US2099681A (en) * 1935-05-09 1937-11-23 Rupert H Draeger Camera indexing mechanism
US2035558A (en) * 1935-09-20 1936-03-31 Haloid Co Photocopy machine
US2496329A (en) * 1945-09-14 1950-02-07 Remington Rand Inc Variable film exposure aperture and film feed
US2891443A (en) * 1957-01-24 1959-06-23 Eastman Kodak Co Photographic color printer
US2944752A (en) * 1957-07-02 1960-07-12 Schwartz Sol Machine for packing pile fabrics
US3520459A (en) * 1967-09-29 1970-07-14 Texas Instruments Inc Tape advance system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202624A (en) * 1978-09-15 1980-05-13 Kreonite Inc. Masking device for cropping photographs viewed on a view screen of a photographic printer
US4557617A (en) * 1983-11-04 1985-12-10 Kroy, Inc. Tape supply cartridge

Also Published As

Publication number Publication date
SE324286B (enrdf_load_stackoverflow) 1970-05-25
GB1233115A (enrdf_load_stackoverflow) 1971-05-26
DE1944522A1 (de) 1970-03-26

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