US3589810A - Processing device for photocopying machine - Google Patents

Processing device for photocopying machine Download PDF

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Publication number
US3589810A
US3589810A US785169A US3589810DA US3589810A US 3589810 A US3589810 A US 3589810A US 785169 A US785169 A US 785169A US 3589810D A US3589810D A US 3589810DA US 3589810 A US3589810 A US 3589810A
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US
United States
Prior art keywords
processing device
sealing
rollers
endless belt
dry
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
US785169A
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English (en)
Inventor
Minoru Umahashi
Kenzou Ariyama
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
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Application granted granted Critical
Publication of US3589810A publication Critical patent/US3589810A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D7/00—Gas processing apparatus

Definitions

  • the present invention relates to a dry-type processing device for photocopying machine and more particularly a drytype processing device utilizing ammonia gas for diazo type and the like photocopying machine.
  • the sealing belt is made in sliding contact with the guide rod members as in the case in which the sealing belt is made in contact with'the sealing end surfaces of the processing casing so that the friction between the sealing belt and the guide rod members is also high as in the case of the first mentioned conventional processing device.
  • the present invention has for its object to eliminate the above described defect encountered in the conventional dry-type processing device, and one of the most important aspects of the present invention resides in the fact that the sliding contact in the conventional processing device is replaced with rolling contact in the present invention.
  • Another object of the present invention is to provide a drytype processing device utilizing the rolling contact instead of the sliding contact as described above in which is used a gas for processing.
  • sealing rollers are disposed at the front and rear side edges of the enclosed casing of the processing section respectively and a sealing belt is lapped over these sealing rollers.
  • processing gas is directed at the processing position in the same direction with that of the movement of the sealing belt.
  • FIG. 1 is a sectional view of a first embodiment of the drytype processing device of a photocopying machine according to the present invention.
  • FIG. 2 is a sectional view of a second embodiment thereof.
  • an evaporating saucer 2 to which is supplied liquid ammonia from a supply pipe 3.
  • Ammonia supplied to the evaporating saucer 2 is heated by a heating device 4 so as to be evaporated.
  • the right open end of the casing l is sealed by means of an endless sealing belt 8 lapped over the peripheries of rollers 5, 6 and 7.
  • the sealing and the casing l are disposed belt 8 is adapted to be driven in the direction indicated by the arrow by for example the roller 5.
  • sealing rollers 9 and I0 which are rotated by the sealing belt 8 being transported in the directions indicated by the arrows respectively.
  • Sliding contact members 11 and 12 made of for example Teflon are mounted upon the casing l for sliding contact with the sealing rollers 9 and 10 respectively.
  • Reference numeral 13 designates a plurality of guide rods spaced apart from each other for guiding the photosensitive paper 14 transferred from the exposure section.
  • a conveyor belt 15 is lapped over the exposure cylinder.
  • the sealing belt 8 is disposed in rolling contact with the sealing rollers 9 and 10 respectively so that the friction therebetween is remarkably less.
  • the contact pressure between the sealing rollers 9 and I0 and the sliding contact members 11 and 12 of the casing I can be reduced because they are not utilized for feeding the photosensitive paper. Consequently, the overall driving force for moving the sealing belt 8 can be made less.
  • FIG. 2 illustrating a second embodiment of the present invention
  • the developing section is enclosed by means of an outer casing 16 and a doublewall construction member 17.
  • an ammonia gas evaporating saucer 18 is disposed outside of the developing section.
  • Ammonia gas evaporated by the evaporating saucer 18 is supplied into the developing or processing chamber 22 from an opening 21 formed on the end of joined pipes 19 and 20 in such a manner that ammonia gas is directed by a blower 25 into the processing chamber 22 in the same direction with that of the movement of the sealing belt 8.
  • the blower 25 also provides for recirculating the ammonia gas through an opening 23 and a pipe 24 back to pipe 20.
  • the sealing belt 8 as well as the double-wall construction member 17 both of which define together with the outer casing 16 a space including the processing chamber 22 into which is supplied ammonia gas are disposed in rolling contact engagement with the sealing rollers 9 and 10 as in the case of the first embodiment. That is, the sealing rollers 9 and 10 are in rolling contact engagement with the sealing belt 8 and with the double-wall construction member 17 through sliding contact members 26 and 27 made of Teflon.
  • ammonia gas within theprocessing chamber 22 presses the photosensitive paper against the sealing belt 8 and facilitates the movement of the photosensitive paper because ammonia gas within the processing chamber is made to flow in the same direction with that of the sealing belt 8.
  • Reference numeral 28 designates photosensitive paper guide rollers disposed in spaced-apart relation with each other; 29, a pair of photosensitive paper discharge rollers; and 30, a vent.
  • sealing rollers are interposed between the sealing belt and the casing of the processing section so as to reduce the friction therebetween and to facilitate the transport of the photosensitive paper.
  • the processing device best suited for high-speed processing can be obtained and ammonia gas can be prevented from being condensed or frozen.
  • a dry-type processing device for processing photosensitive material in a photocopying machine comprising an operational chamber having an operational developing area along one side thereof;
  • sealing rollers located between said operational 5 chamber and said endless belt, said sealing rollers being in contact with and driven by said endless belt, each sealing roller located, respectively, at one end of said developing area;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Structure Of Belt Conveyors (AREA)
US785169A 1967-12-28 1968-12-19 Processing device for photocopying machine Expired - Lifetime US3589810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8360267 1967-12-28

Publications (1)

Publication Number Publication Date
US3589810A true US3589810A (en) 1971-06-29

Family

ID=13807016

Family Applications (1)

Application Number Title Priority Date Filing Date
US785169A Expired - Lifetime US3589810A (en) 1967-12-28 1968-12-19 Processing device for photocopying machine

Country Status (4)

Country Link
US (1) US3589810A (nl)
DE (1) DE1817280A1 (nl)
GB (1) GB1256540A (nl)
NL (1) NL6818622A (nl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792488A (en) * 1971-08-18 1974-02-12 Matsushita Electric Ind Co Ltd Fixing apparatus
US4135814A (en) * 1976-05-28 1979-01-23 Hoechst Aktiengesellschaft Process and apparatus for the production of photocopies using two-component diazotype material
US4189231A (en) * 1977-10-26 1980-02-19 Hans Haus Apparatus for the continuous exposure of sheet or strip copy material
US4255037A (en) * 1978-04-17 1981-03-10 Quantor Corporation High speed, low temperature and pressure diazo processing apparatus
US4289394A (en) * 1978-06-23 1981-09-15 Rhone-Poulenc Systemes Process and apparatus for converging developing vapors in diazocopy machines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174420A (en) * 1963-04-22 1965-03-23 Aizawa Tatsuo Automatic electronic control system in the continuous printing and ammonia gas developing machine for sensitive papers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174420A (en) * 1963-04-22 1965-03-23 Aizawa Tatsuo Automatic electronic control system in the continuous printing and ammonia gas developing machine for sensitive papers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792488A (en) * 1971-08-18 1974-02-12 Matsushita Electric Ind Co Ltd Fixing apparatus
US4135814A (en) * 1976-05-28 1979-01-23 Hoechst Aktiengesellschaft Process and apparatus for the production of photocopies using two-component diazotype material
US4189231A (en) * 1977-10-26 1980-02-19 Hans Haus Apparatus for the continuous exposure of sheet or strip copy material
US4255037A (en) * 1978-04-17 1981-03-10 Quantor Corporation High speed, low temperature and pressure diazo processing apparatus
US4289394A (en) * 1978-06-23 1981-09-15 Rhone-Poulenc Systemes Process and apparatus for converging developing vapors in diazocopy machines

Also Published As

Publication number Publication date
DE1817280A1 (de) 1969-08-07
GB1256540A (nl) 1971-12-08
NL6818622A (nl) 1969-07-01

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