US3858975A - Copying apparatus - Google Patents

Copying apparatus Download PDF

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Publication number
US3858975A
US3858975A US271271A US27127172A US3858975A US 3858975 A US3858975 A US 3858975A US 271271 A US271271 A US 271271A US 27127172 A US27127172 A US 27127172A US 3858975 A US3858975 A US 3858975A
Authority
US
United States
Prior art keywords
fur
glass plate
original
roller
pressure roller
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
US271271A
Other languages
English (en)
Inventor
Wilhelm Knechtel
Gerhard Petersdorf
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of US3858975A publication Critical patent/US3858975A/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
    • G03B27/62—Holders for the original
    • G03B27/6207—Holders for the original in copying cameras
    • G03B27/625—Apparatus which relate to the handling of originals, e.g. presence detectors, inverters
    • G03B27/6257—Arrangements for moving an original once or repeatedly to or through an exposure station

Definitions

  • sponge rubber rollers have a disadvantage that they are very much apt to be stained. Therefore, the sponge rubber roller are often enveloped with fabric cover. Such a construction is costly. Further, during the operation of the copying apparatus, originals often bound together by means of paper fasteners or clips are conveyed on the glass plate by a transport mechanism to effect copying. In such cases, the fasteners would often break and damage the fabric cover and even the sponge rubber of the rollers, so that the service life of such rollers are poor.
  • this object can be achieved by covering the pressure roller with a fur and determining the distance between the roller and the glass plate such that the hairs of the covering fur impart a light pressure to the original.
  • the covering fur may be a white rabbits fur.
  • the fur is white, and thus, when the original to be copied is smaller in size than a copy paper to be exposed to light, there is no possibility of ugly black por tions being produced on the copy due to the fur hairs being copied thereon.
  • the fur is formed into a strip and helically wound about the roller and secured thereto as by adhesion. By doing so, the fur will be substantially prevented from separation if the fur is cut eitactly into the shape of strip.
  • the fur is attached to the roller so that the hairs of the fur in natural condition are oriented in the circumferential direction of the roller. In this case, care must be taken of the orientation of the hairs in cutting the fur. The hairs of the fur so attached will always smoothly contact the original and never be entangled even after a long-time use.
  • FIG. 1 is a schematic side view of the copying apparatus according to the present invention.
  • FIG. 2 is a plan view showing the pressure roller thereof in detail.
  • FIG. l an original 2 is moved on a glass plate 1 in the direction of arrow 3 for copying.
  • Transport rolls 1' nip the original 2 therebetween and slidably convey it to transport rolls 4.
  • the transport rolls 4 discharge the original.
  • a pressure roller 5 is in intimate contact with the glass plate 1 during the copying of the original, thereby pressing the original against the upper surface of the glass plate so as to provide a clear copy.
  • the pressure roller 5 is covered with a white rabbits fur 6.
  • the distance between the roller 5 and the glass plate 1 is such that the hairs of the fur 6 contact the original and press it against the glass plate 1 over a wide area.
  • the fur 6 cut in the form of a strip is helically wound about the roller 5 and adhered thereto.
  • the fur strip 7' may be provided by cutting it from a white rabbits fur so that the hairs 8 in natural condition are oriented in the circumferential direction of the roller.
  • a copying machine comprising a flat glass plate, means for transporting an original on said flat glass plate, and a rotatable pressure roller having thereon a white fur covering, said pressure roller being disposed above said flat glass plate at a predetermined position to input a light pressure on said original while being transported between said flat glass plate and said pressure roller.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
US271271A 1971-07-20 1972-07-13 Copying apparatus Expired - Lifetime US3858975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712136141 DE2136141B2 (de) 1971-07-20 1971-07-20 Vorlagenhandhabung in der abtaststation einer kopiereinrichtung

Publications (1)

Publication Number Publication Date
US3858975A true US3858975A (en) 1975-01-07

Family

ID=5814192

Family Applications (1)

Application Number Title Priority Date Filing Date
US271271A Expired - Lifetime US3858975A (en) 1971-07-20 1972-07-13 Copying apparatus

Country Status (2)

Country Link
US (1) US3858975A (show.php)
DE (1) DE2136141B2 (show.php)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017172A (en) * 1975-04-24 1977-04-12 Xerox Corporation Document feeding apparatus
US4049348A (en) * 1974-12-23 1977-09-20 Yves Cormier Photocopying apparatus
US4106871A (en) * 1976-01-26 1978-08-15 Addressograph Multigraph Corporation Contact printer holder
CN109734290A (zh) * 2019-03-04 2019-05-10 江西瑞晶家饰有限公司 一种家具用高强度玻璃滚压装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894744A (en) * 1956-12-18 1959-07-14 Bruning Charles Co Inc Feed rollers for photo-conductive insulating material
US3069990A (en) * 1958-12-18 1962-12-25 Develop Kommanditgesellschaft Contact copying apparatus
US3395631A (en) * 1965-06-24 1968-08-06 Gaf Corp Thermal developing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894744A (en) * 1956-12-18 1959-07-14 Bruning Charles Co Inc Feed rollers for photo-conductive insulating material
US3069990A (en) * 1958-12-18 1962-12-25 Develop Kommanditgesellschaft Contact copying apparatus
US3395631A (en) * 1965-06-24 1968-08-06 Gaf Corp Thermal developing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049348A (en) * 1974-12-23 1977-09-20 Yves Cormier Photocopying apparatus
US4017172A (en) * 1975-04-24 1977-04-12 Xerox Corporation Document feeding apparatus
US4106871A (en) * 1976-01-26 1978-08-15 Addressograph Multigraph Corporation Contact printer holder
CN109734290A (zh) * 2019-03-04 2019-05-10 江西瑞晶家饰有限公司 一种家具用高强度玻璃滚压装置

Also Published As

Publication number Publication date
DE2136141A1 (de) 1973-02-08
DE2136141B2 (de) 1973-09-06
DE2136141C3 (show.php) 1974-04-11

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