US3804512A - Copying apparatus for sheet originals and thicker originals - Google Patents

Copying apparatus for sheet originals and thicker originals Download PDF

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Publication number
US3804512A
US3804512A US00258820A US25882072A US3804512A US 3804512 A US3804512 A US 3804512A US 00258820 A US00258820 A US 00258820A US 25882072 A US25882072 A US 25882072A US 3804512 A US3804512 A US 3804512A
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US
United States
Prior art keywords
original
carriage
copying apparatus
copying
rollers
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
US00258820A
Inventor
S Komori
H Sakamaki
K Miyamoto
K Umezawa
H Hattori
T Iida
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
Priority claimed from JP3891871A external-priority patent/JPS5514433B1/ja
Priority claimed from JP3891771A external-priority patent/JPS5642875B1/ja
Priority claimed from JP4863271U external-priority patent/JPS487676U/ja
Priority claimed from JP4119671A external-priority patent/JPS5636423B1/ja
Priority claimed from JP4119571A external-priority patent/JPS5542388B1/ja
Priority claimed from JP4119771A external-priority patent/JPS559714B1/ja
Priority claimed from JP4461171A external-priority patent/JPS526630B1/ja
Priority claimed from JP46066740A external-priority patent/JPS4832536A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of US3804512A publication Critical patent/US3804512A/en
Application granted granted Critical
Priority to US05/860,457 priority Critical patent/US4190464A/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
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
    • G03G15/30—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum
    • 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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
    • G03G15/30—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum
    • G03G15/302—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum with arrangements for copying different kinds of originals, e.g. sheets, books
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control
    • G03G21/203—Humidity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control
    • G03G21/206—Conducting air through the machine, e.g. for cooling, filtering, removing gases like ozone

Definitions

  • a copying apparatus for selectively copying sheet originals and thicker originals such as books and the like comprises various process devices as used in an electrophotographic copying apparatus of the type which employs the liquid development and drum type image transfer system.
  • the copying apparatus of the invention includes improvements in such devices'as original carriage, original transport apparatus, guide for original carriage, original keep cover, apparatus for controlling the operation of the copying apparatus, apparatus for detecting the amountof toner in developing liquid, copy paper feed apparatus, apparatus for controlling the paper feed apparatus, apparatus for separating copy paper from a photosensitive drum, apparatus for conveying copy paper from the feed apparatus to a discharge port, apparatus for repeating copying operation, apparatus for drying and fixing the image on the copy paper, apparatus for supporting the photosensitive medium, etc.

Abstract

A copying apparatus for selectively copying sheet originals and thicker originals such as books and the like comprises various process devices as used in an electrophotographic copying apparatus of the type which employs the liquid development and drum type image transfer system. The copying apparatus of the invention includes improvements in such devices as original carriage, original transport apparatus, guide for original carriage, original keep cover, apparatus for controlling the operation of the copying apparatus, apparatus for detecting the amount of toner in developing liquid, copy paper feed apparatus, apparatus for controlling the paper feed apparatus, apparatus for separating copy paper from a photosensitive drum, apparatus for conveying copy paper from the feed apparatus to a discharge port, apparatus for repeating copying operation, apparatus for drying and fixing the image on the copy paper, apparatus for supporting the photosensitive medium, etc.

Description

United States Patent 1191 Komori et al.
1451 Apr. 16, 1974 [22] Filed:
[73] Assignee: Canon Kabushiki Kaisha, Tokyo,
Japan June 1, 1972 [21 Appl. No.: 258,820
[30] Foreign Application Priority Data June 9, 1971 Japan 46-48632 June 3, 1971 Japan 46-38917 June 3, 1971 I Japan 46-38918 June 10, 1971 Japan.... 46-41195 June 10, 1971 Japan..; 46-41196 June 10, 1971 Japan 46-41197 June 21, 1971 Japan.... 46-44611 ug. 30, 1971 Japan 46-66740 [52] US. Cl .1 355/25, 355/3, 355/8, 355/10, 355/11, 355/14, 355/15, 355/27 [51] Int. Cl G03b 27/32, G03b 27/52 [58] Field of Search 355/18, 25, 82, 8
[56] References Cited UNITED STATES PATENTS 6/1971 Murgas.... 355/25 X 3,597,074 8/1971 Murgas 355/25 3,677,635 7/1972 Van Auken et a1. 355/25 X 3,685,905 8/1972 Marshall et al. 355/82 X Primary Examiner-Richard M. Sheer Attorney, Agent, or Firm- Joseph M. Fitzpatrick 5 7 ABSTRACT A copying apparatus for selectively copying sheet originals and thicker originals such as books and the like comprises various process devices as used in an electrophotographic copying apparatus of the type which employs the liquid development and drum type image transfer system. The copying apparatus of the invention includes improvements in such devices'as original carriage, original transport apparatus, guide for original carriage, original keep cover, apparatus for controlling the operation of the copying apparatus, apparatus for detecting the amountof toner in developing liquid, copy paper feed apparatus, apparatus for controlling the paper feed apparatus, apparatus for separating copy paper from a photosensitive drum, apparatus for conveying copy paper from the feed apparatus to a discharge port, apparatus for repeating copying operation, apparatus for drying and fixing the image on the copy paper, apparatus for supporting the photosensitive medium, etc.
8 Claims, 61 Drawing Figures PATENWWPR w I914 $04,512
D lemma) m suse) 1072 mndlmz PATENTEMPR 1 s new sum m 0F 33 PATEN'IIEDIAPR 16 I974 180mm 2 IVISI IVIS2 IVIS8O I I L STANDARD VALUE X YSET VALUE Y TONER SUPPLIER ACTS TONER SUPPLER STOPS CAUTION ACTS CAUTION STOPS CONCENTRATION LIQ. DEVELOPER PMWEWR 18 m4 3.80%512 mm mm? m

Claims (8)

1. In a copying apparatus having an original carriage, means for reciprocating said original carriage, a photosensitive medium, an optical system for projecting an original image on said photosensitive medium, means for forming an image on said photosensitive medium, developing means, transfer means, means for feeding transfer mediums, means for conveying transfer mediums from said feed means to a discharge port, fixing means, and a housing for accommodating therein all of said means, comprising the improvement wherein said original carriage includes sheet original transport means integral therewith and having rollers for advancing a sheet original until the leading edge thereof reaches a detecting position, and means for temporarily stopping said sheet original at said position; said apparatus further comprising means for automatically reciprocating said original carriage, means for releasably locking said carriage against reciprocating movement, and means for generating a start signal coupled to said original carriage for initiating reciprocal movement of said carriage upon release thereof when a thick original is to be copied, and for energizing said rollers to further advance said sheet original from said detecting position when a sheet original is to be copied.
2. A copying apparatus according to claim 1, wherein said housing and said original carriage respectively have stationary rails and movable rails extending longitudinally thereof and disposed in vertically opposed relationship with each other, said housing and said original carriage being connected together so as to define two sets of horizontally adjacent, partitioned spaces, one of said sets of spaces receiving therein horizontal and vertical rollers with retainers so as to restrain the freedom of horizontal and vertical movement of said housing and said original carriage, the other set of spaces receiving therein vertical rollers with retainers so as to restrain the freedom of vertical movement of said housing and said original carriage, thereby providing a guide mechanism for said original carriage.
3. A copying apparatus according to claim 2, wherein said horizontal and vertical rollers with retainers in one of the spaces of said one set and said vertical rollers with retainers in one of the spaces of said other set are resilient rollers slightly larger than predetermined dimensions of said spaces in the directions for restraining said freedom of movement.
4. A copying apparatus according to claim 2, wherein said stationary and movable rails are formed of light alloy extrudate and said horizontal and vertical rollers are formed of synthetic resin.
5. Copying apparatus as set forth in claim 1, further coMprising means for moving said photosensitive medium upon movement of said sheet original transport rollers, and means for initiating said start signal when said carriage is disposed at said detecting position.
6. A copying apparatus according to claim 5, wherein if said original is of such a size that a plurality of copies can be provided for one rotation of said photosensitive medium, the detection, temporal stoppage and re-start of said original may be effected in accordance with successive start signals from said photosensitive medium.
7. A copying apparatus according to claim 5, wherein a signal corresponding to the size of said original is produced from a cam of said carriage and a microswitch of the apparatus body in response to the advancement of said original carriage to thereby control the distance of advancement of said carriage and rapidly return said carriage to the start position thereof.
8. A copying apparatus according to claim 5, further including means for detecting a cassette inserted into said housing, said cassette containing therein transfer mediums, and means for determining the size of said cassette, whereby copying operation is automatically effected in accordance with the size of said transfer medium.
US00258820A 1971-06-03 1972-06-01 Copying apparatus for sheet originals and thicker originals Expired - Lifetime US3804512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/860,457 US4190464A (en) 1971-06-03 1977-12-14 Method for cleaning a photoconductive surface with liquid toner

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP3891871A JPS5514433B1 (en) 1971-06-03 1971-06-03
JP3891771A JPS5642875B1 (en) 1971-06-03 1971-06-03
JP4863271U JPS487676U (en) 1971-06-09 1971-06-09
JP4119571A JPS5542388B1 (en) 1971-06-10 1971-06-10
JP4119771A JPS559714B1 (en) 1971-06-10 1971-06-10
JP4119671A JPS5636423B1 (en) 1971-06-10 1971-06-10
JP4461171A JPS526630B1 (en) 1971-06-21 1971-06-21
JP46066740A JPS4832536A (en) 1971-08-30 1971-08-30
NL7207602A NL7207602A (en) 1971-06-03 1972-06-05

Related Child Applications (4)

Application Number Title Priority Date Filing Date
US41322173A Division 1971-06-03 1973-11-06
US41321073A Division 1971-06-03 1973-11-06
US46110474A Continuation 1971-06-03 1974-04-15
US46110474A Division 1971-06-03 1974-04-15

Publications (1)

Publication Number Publication Date
US3804512A true US3804512A (en) 1974-04-16

Family

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Family Applications (1)

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US00258820A Expired - Lifetime US3804512A (en) 1971-06-03 1972-06-01 Copying apparatus for sheet originals and thicker originals

Country Status (2)

Country Link
US (1) US3804512A (en)
NL (1) NL7207602A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948586A (en) * 1972-11-02 1976-04-06 Canon Kabushiki Kaisha Jam detecting device in a copying machine
US3981576A (en) * 1973-04-24 1976-09-21 Canon Kabushiki Kaisha Multicolor electrophotographic copier with liquid developing
US3999851A (en) * 1973-12-21 1976-12-28 Canon Kabushiki Kaisha Antijamming safety device for copying machine
US4009957A (en) * 1973-12-27 1977-03-01 Ricoh Co., Ltd. Copy paper feed system
US4009955A (en) * 1971-06-03 1977-03-01 Canon Kabushiki Kaisha Copying apparatus for sheet originals and thicker originals
US4033694A (en) * 1975-11-17 1977-07-05 Xerox Corporation Copier document ejector
US4099861A (en) * 1976-11-10 1978-07-11 Eastman Kodak Company Contamination sensor
DE2812834A1 (en) * 1977-03-28 1978-10-05 Canon Kk RECORDING DEVICE WITH AN ANALOG-DIGITAL CONVERTER
US4134667A (en) * 1976-04-09 1979-01-16 Agfa-Gevaert Ag Drum assembly for electrostatic copier
US4134669A (en) * 1977-04-18 1979-01-16 Siemens Aktiengesellschaft Drum support for electrostatic printer
US4270857A (en) * 1971-06-03 1981-06-02 Canon Kabushiki Kaisha Copying apparatus for sheet originals and thicker originals
US4367036A (en) * 1975-02-08 1983-01-04 Canon Kabushiki Kaisha Temperature and humidity compensating device in an image forming apparatus
EP0072911A2 (en) * 1981-08-27 1983-03-02 International Business Machines Corporation Original document feed for a copier
US4395118A (en) * 1974-03-12 1983-07-26 Canon Kabushiki Kaisha Copying apparatus
US4521099A (en) * 1974-10-22 1985-06-04 Canon Kabushiki Kaisha Copying apparatus
US4608704A (en) * 1982-11-10 1986-08-26 Brandt, Incorporated Method and apparatus for counting sheets which may be fed in skewed and/or overlapping fashion
US4627709A (en) * 1983-11-08 1986-12-09 Canon Kabushiki Kaisha Automatic sheet feeder and an image recording apparatus provided therewith
US4671502A (en) * 1982-11-10 1987-06-09 Brandt, Inc. Method and apparatus for counting sheets which may be fed in skewed and/or overlapping fashion
US4879578A (en) * 1981-03-02 1989-11-07 Mita Industrial Co., Ltd. Paper feeding device and a paper guiding device in a copying apparatus
US5480131A (en) * 1982-01-25 1996-01-02 Canon Kabushiki Kaisha Paper feeding device
US5530521A (en) * 1993-05-24 1996-06-25 Samsung Electronics Co., Ltd. Apparatus and method for sensing state of a waste toner box of system in an electrophotographic reproduction apparatus
US20090173542A1 (en) * 2008-01-04 2009-07-09 Longyear Tm, Inc. Vibratory unit for drilling systems
CN108957973A (en) * 2017-05-19 2018-12-07 京瓷办公信息系统株式会社 Photoconductive drum unit and image forming apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588244A (en) * 1968-09-23 1971-06-28 Icp Inc Book copier attachment for a photocopy machine
US3597074A (en) * 1968-07-18 1971-08-03 Icp Inc Combination sheet and book copy machine
US3677635A (en) * 1970-04-22 1972-07-18 Saxon Ind Inc Copying machine system
US3685905A (en) * 1971-04-22 1972-08-22 Xerox Corp Combined document feed and book copying apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3597074A (en) * 1968-07-18 1971-08-03 Icp Inc Combination sheet and book copy machine
US3588244A (en) * 1968-09-23 1971-06-28 Icp Inc Book copier attachment for a photocopy machine
US3677635A (en) * 1970-04-22 1972-07-18 Saxon Ind Inc Copying machine system
US3685905A (en) * 1971-04-22 1972-08-22 Xerox Corp Combined document feed and book copying apparatus

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270857A (en) * 1971-06-03 1981-06-02 Canon Kabushiki Kaisha Copying apparatus for sheet originals and thicker originals
US4009955A (en) * 1971-06-03 1977-03-01 Canon Kabushiki Kaisha Copying apparatus for sheet originals and thicker originals
US3948586A (en) * 1972-11-02 1976-04-06 Canon Kabushiki Kaisha Jam detecting device in a copying machine
US3981576A (en) * 1973-04-24 1976-09-21 Canon Kabushiki Kaisha Multicolor electrophotographic copier with liquid developing
US3999851A (en) * 1973-12-21 1976-12-28 Canon Kabushiki Kaisha Antijamming safety device for copying machine
US4009957A (en) * 1973-12-27 1977-03-01 Ricoh Co., Ltd. Copy paper feed system
US4395118A (en) * 1974-03-12 1983-07-26 Canon Kabushiki Kaisha Copying apparatus
US4521099A (en) * 1974-10-22 1985-06-04 Canon Kabushiki Kaisha Copying apparatus
US4367036A (en) * 1975-02-08 1983-01-04 Canon Kabushiki Kaisha Temperature and humidity compensating device in an image forming apparatus
US4033694A (en) * 1975-11-17 1977-07-05 Xerox Corporation Copier document ejector
US4134667A (en) * 1976-04-09 1979-01-16 Agfa-Gevaert Ag Drum assembly for electrostatic copier
US4099861A (en) * 1976-11-10 1978-07-11 Eastman Kodak Company Contamination sensor
DE2812834A1 (en) * 1977-03-28 1978-10-05 Canon Kk RECORDING DEVICE WITH AN ANALOG-DIGITAL CONVERTER
US4222105A (en) * 1977-03-28 1980-09-09 Canon Kabushiki Kaisha Recording apparatus including analog-digital converter
US4134669A (en) * 1977-04-18 1979-01-16 Siemens Aktiengesellschaft Drum support for electrostatic printer
US4879578A (en) * 1981-03-02 1989-11-07 Mita Industrial Co., Ltd. Paper feeding device and a paper guiding device in a copying apparatus
EP0072911A2 (en) * 1981-08-27 1983-03-02 International Business Machines Corporation Original document feed for a copier
EP0072911A3 (en) * 1981-08-27 1983-07-06 International Business Machines Corporation Orginal document feed for a copier
US5480131A (en) * 1982-01-25 1996-01-02 Canon Kabushiki Kaisha Paper feeding device
US4671502A (en) * 1982-11-10 1987-06-09 Brandt, Inc. Method and apparatus for counting sheets which may be fed in skewed and/or overlapping fashion
US4608704A (en) * 1982-11-10 1986-08-26 Brandt, Incorporated Method and apparatus for counting sheets which may be fed in skewed and/or overlapping fashion
US4627709A (en) * 1983-11-08 1986-12-09 Canon Kabushiki Kaisha Automatic sheet feeder and an image recording apparatus provided therewith
US5530521A (en) * 1993-05-24 1996-06-25 Samsung Electronics Co., Ltd. Apparatus and method for sensing state of a waste toner box of system in an electrophotographic reproduction apparatus
US20090173542A1 (en) * 2008-01-04 2009-07-09 Longyear Tm, Inc. Vibratory unit for drilling systems
CN108957973A (en) * 2017-05-19 2018-12-07 京瓷办公信息系统株式会社 Photoconductive drum unit and image forming apparatus
US10310437B2 (en) * 2017-05-19 2019-06-04 Kyocera Document Solutions Inc. Drum unit and image forming apparatus
CN108957973B (en) * 2017-05-19 2021-07-09 京瓷办公信息系统株式会社 Photosensitive drum unit and image forming apparatus

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Publication number Publication date
NL7207602A (en) 1972-12-05

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