GB1537778A - Photocopying device provided with a transparent plate - Google Patents

Photocopying device provided with a transparent plate

Info

Publication number
GB1537778A
GB1537778A GB4792876A GB4792876A GB1537778A GB 1537778 A GB1537778 A GB 1537778A GB 4792876 A GB4792876 A GB 4792876A GB 4792876 A GB4792876 A GB 4792876A GB 1537778 A GB1537778 A GB 1537778A
Authority
GB
United Kingdom
Prior art keywords
device provided
electromagnet
transparent plate
copying
cover
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
Application number
GB4792876A
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 Production Printing Holding BV
Original Assignee
Oce Van der Grinten NV
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 Oce Van der Grinten NV filed Critical Oce Van der Grinten NV
Publication of GB1537778A publication Critical patent/GB1537778A/en
Expired legal-status Critical Current

Links

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
    • G03B27/6221—Transparent copy platens
    • G03B27/6228—Platen covers

Abstract

The copying machine contains a cover (2) which is pulled onto the glass plate (1) by an electromagnet or permanent magnet (154), in order to press the original against the glass plate. In order to reduce the force which is required when raising the cover after copying, an additional electromagnet (152) is provided which is automatically excited after each copying cycle and whose polarity is directed opposite to the polarity of the first mentioned electromagnet or permanent magnet. <IMAGE>
GB4792876A 1975-12-16 1976-11-17 Photocopying device provided with a transparent plate Expired GB1537778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7514623A NL7514623A (en) 1975-12-16 1975-12-16 COPIER.

Publications (1)

Publication Number Publication Date
GB1537778A true GB1537778A (en) 1979-01-04

Family

ID=19825032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4792876A Expired GB1537778A (en) 1975-12-16 1976-11-17 Photocopying device provided with a transparent plate

Country Status (8)

Country Link
JP (1) JPS5947293B2 (en)
CA (1) CA1069366A (en)
CH (1) CH610671A5 (en)
DE (1) DE2651895C2 (en)
FR (1) FR2335870A1 (en)
GB (1) GB1537778A (en)
NL (1) NL7514623A (en)
SE (1) SE416002B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745570A (en) * 1980-09-03 1982-03-15 Ricoh Co Ltd Press-contacting device for original
JPH01259771A (en) * 1988-04-08 1989-10-17 Japan Atom Energy Res Inst Damping means for fly-wheel generator
JPH0453258U (en) * 1990-09-12 1992-05-07

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB374219A (en) * 1931-04-29 1932-06-09 William Booth Improvements relating to photographic printing boxes
DE806628C (en) * 1948-10-02 1951-06-14 Rudolf Magnus Electromagnetically operated copy cover lock
US3888582A (en) * 1974-03-08 1975-06-10 Xerox Corp Semi-automatic document handler
NL171933C (en) * 1975-03-03 1983-06-01 Oce Van Der Grinten Nv COPIER.

Also Published As

Publication number Publication date
FR2335870A1 (en) 1977-07-15
JPS5947293B2 (en) 1984-11-17
NL7514623A (en) 1977-06-20
SE7614069L (en) 1977-06-17
FR2335870B1 (en) 1980-10-03
DE2651895A1 (en) 1977-06-30
CA1069366A (en) 1980-01-08
SE416002B (en) 1980-11-17
DE2651895C2 (en) 1985-02-28
JPS5276028A (en) 1977-06-25
CH610671A5 (en) 1979-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee