GB1434220A - Photocopying machines and apparatus - Google Patents

Photocopying machines and apparatus

Info

Publication number
GB1434220A
GB1434220A GB3610273A GB3610273A GB1434220A GB 1434220 A GB1434220 A GB 1434220A GB 3610273 A GB3610273 A GB 3610273A GB 3610273 A GB3610273 A GB 3610273A GB 1434220 A GB1434220 A GB 1434220A
Authority
GB
United Kingdom
Prior art keywords
gear
reel
take
drum
control member
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
GB3610273A
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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
Priority claimed from JP7671972A external-priority patent/JPS5551187B2/ja
Priority claimed from JP7671872A external-priority patent/JPS5545913B2/ja
Priority claimed from JP7813172A external-priority patent/JPS5544383B2/ja
Priority claimed from JP7813272A external-priority patent/JPS4935039A/ja
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of GB1434220A publication Critical patent/GB1434220A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum
    • G03G15/752—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum with renewable photoconductive layer

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Transmission Devices (AREA)

Abstract

1434220 Electro-photographic apparatus RICOH KK 30 July 1973 [31 July 1972 (2) 3 Aug 1972 (2)] 36102/73 Heading G2H The length of electro-photographic copying material 2 supported on the peripheral surface of a drum 1 of a copying apparatus is periodically changed as the material becomes worn by driving a take-up reel 4 mounted inside the drum so that a fresh length of material is drawn from a feed reel 6 also mounted inside the drum. The drive means for the take-up reel is mounted outside the drum and preferably comprises a main drive gear 55 for rotating a shaft 3 and the drum 1 and being itself driven from a chain 70 through a gear 51, a transmission gear 57 driven by gear 55 and connected to a connection gear 61 through a solenoid operated spring clutch, a sun gear 68 arranged to be driven by the connection gear and mounted for free rotation about shaft 3 and a take-up reel advancing gear 69 meshing with the sun gear. The arrangement is such that with the spring clutch disengaged the gear 69 is not rotated by the sun gear but with the clutch engaged (by actuation of solenoid M) the clutch is engaged and the sun gear is rotated to drive the gear 69 and thus the take-up reel. The chain 70 also oscillates a pawl 78 which advances a ratchet 73 by one tooth for every rotation of the drum 1 (i.e. each cycle). After a predetermined number of copies has been made the solenoid M is energized to transmit drive to the take-up reel. A solenoid M, is also energized to release a control member 72 for rotation with ratchet 73. This control member actuates a pawl 93 to move a ratchet 92 by one tooth when a fresh length of copy material has been driven into place. The control member then actuates a switch S, to de-energize solenoids M and M 1 and so disable the drive to the take-up reel. The movement of ratchet 92 is indicated on a dial 100 by a pointer 99 so that the number of lengths of copy material remaining on the supply reel is indicated. Every time the control member 72 is actuated the switch S 1 waves for a different position around the periphery of the control member to compensate for the effective increase in size of the take-up reel (and thus the amount of material taken up per revolutions) as the copy material is wound thereon. When the supply of copy material is exhausted a switch S 2 is actuated to activate an alarm.
GB3610273A 1972-07-31 1973-07-30 Photocopying machines and apparatus Expired GB1434220A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7671972A JPS5551187B2 (en) 1972-07-31 1972-07-31
JP7671872A JPS5545913B2 (en) 1972-07-31 1972-07-31
JP7813172A JPS5544383B2 (en) 1972-08-03 1972-08-03
JP7813272A JPS4935039A (en) 1972-08-03 1972-08-03

Publications (1)

Publication Number Publication Date
GB1434220A true GB1434220A (en) 1976-05-05

Family

ID=27465969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3610273A Expired GB1434220A (en) 1972-07-31 1973-07-30 Photocopying machines and apparatus

Country Status (3)

Country Link
US (1) US3926515A (en)
CA (1) CA1015822A (en)
GB (1) GB1434220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341464A (en) * 1980-02-27 1982-07-27 Oce-Nederland B.V. Reproduction apparatus employing a cassette with a finite belt

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084901A (en) * 1976-03-25 1978-04-18 Pitney-Bowes, Inc. Copying machine
JPS57163276A (en) * 1981-04-01 1982-10-07 Canon Inc Picture forming device
JPS5961851A (en) * 1982-09-30 1984-04-09 Canon Inc Display mechanism for life of process cartridge
DE3703942A1 (en) * 1987-02-09 1988-08-18 Siemens Ag GAME-FREE STORAGE DEVICE FOR PHOTO LADDER DRUMING IN PRINT OR COPY DEVICES
ES2101964T3 (en) * 1992-12-16 1997-07-16 Tdw Delaware Inc PLASTIC TUBE FUSING MACHINE.
US5355795A (en) * 1993-08-26 1994-10-18 Presstek, Inc. Automatic plate-loading cylinder for use with plate-imaging systems
US5657692A (en) * 1995-05-04 1997-08-19 Presstek, Inc. Removable supply and uptake assemblies for lithographic plate material
WO2015154805A1 (en) * 2014-04-09 2015-10-15 Hewlett-Packard Indigo B.V. Fault detection

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496329A (en) * 1945-09-14 1950-02-07 Remington Rand Inc Variable film exposure aperture and film feed
US3480361A (en) * 1966-02-03 1969-11-25 Konishiroku Photo Ind Photographic copying machine
US3706489A (en) * 1970-04-24 1972-12-19 Minnesota Mining & Mfg Copying and duplicating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341464A (en) * 1980-02-27 1982-07-27 Oce-Nederland B.V. Reproduction apparatus employing a cassette with a finite belt

Also Published As

Publication number Publication date
DE2338340A1 (en) 1974-02-21
DE2338340B2 (en) 1977-01-13
US3926515A (en) 1975-12-16
AU5852073A (en) 1975-01-30
CA1015822A (en) 1977-08-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee