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公开(公告)号：US3900192A
公开(公告)日：1975-08-19
申请号：US42848373
申请日：1973-12-26
Applicant: IBM
Inventor： GIBSON DAVID K
IPC: G03B27/14 , B41F13/02 , B65H1/04 , B65H5/00 , B65H7/10 , B65H7/18 , B65H9/00 , B65H83/00 , G03B27/00 , G03G15/00 , G03G15/23 , G03G21/00 , G06K13/12 , B65H3/06 , B65H31/26
CPC classification number: G03G15/6579 , B65H5/00 , G03G15/234 , G03G2215/00434 , G03G2215/00438
Abstract: A storage bin, which is to receive sheets on which duplexed images are to be formed by a photocopy machine after a first image is formed thereon, has its rear wall at an oblique angle to the path along which the sheet is traveling from the reproduction portion of the photocopy machine. This causes each of the sheets to be stored with its side, which is to engage a vertically disposed aligner as it passes through the photocopy machine prior to the reproduction portion, at an angle to the aligner, which has a U-shaped cross section, so that the leading corner of the sheet on the side that engages the aligner will pass the upper edge of the aligner before the aligner engages the side of the sheet. A pivotally mounted wheel receives energy from the sheet as the sheet enters the storage bin to prevent bounce back of the sheet when its edge abuts the rear wall of the storage bin so that the edge of the sheet remains against the rear wall. To insure that the sheet, irrespective of its width, arrives at a gate in its path to the reproduction portion of the photocopy machine within a predetermined time period upon its advance from the storage bin, the feed cycle of the sheet from the storage bin is divided into first and second portions. During the first portion, the sheet is fed to a predetermined position. The second portion begins a fixed period of time after the start of the feed cycle to feed the sheet from this predetermined position so that the sheet arrives at the gate within the predetermined time period.
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公开(公告)号：CA1027977A
公开(公告)日：1978-03-14
申请号：CA279618
申请日：1977-06-01
Applicant: IBM
Inventor： GIBSON DAVID K
IPC: B65H3/20
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公开(公告)号：CA2007788A1
公开(公告)日：1990-09-17
申请号：CA2007788
申请日：1990-01-15
Applicant: IBM
Inventor： BELL ROGER W , EHN DEAN S , FOX SIDNEY J , GIBSON DAVID K , RIES MICHAEL D , ROSATI ALFONSO A , VELARDE RONALD G
IPC: G03G15/16 , G03G15/06 , G03G15/044
Abstract: B0989001X ELECTROPHOTOGRAPHIC MACHINE WITH EFFICIENT TRANSFER An electrophotographic machine with a transfer corona generator for producing ionic flow to the backside of print paper to electrostatically attach the paper to the photoreceptive image bearing surface. The machine includes a flexible support member which is movably mounted to mechanically press the print paper against the photoreceptive surface within the transfer zone, preferably at or near the region of peak transfer charge distribution. In that manner, charge from the transfer corona attaches the print paper to the photoreceptive surface at the line of release from the mechanical pressure applied by the flexible support member and thereby eliminates voids in the transfer of toner to print paper caused by air gaps between the paper and the photoreceptive surface.
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公开(公告)号：CA1085211A
公开(公告)日：1980-09-09
申请号：CA288229
申请日：1977-10-06
Applicant: IBM
Inventor： GIBSON DAVID K , MILLER MYRL J , SNELL SPENCER A
IPC: G03B27/62 , G03B27/32 , G03B27/34 , G03G15/04 , G03G15/041 , G03G15/22 , G03G21/00 , H04N1/04 , G03B27/36 , G03B27/38
Abstract: A continuously variable reduction optical system for document copiers wherein a plurality of sets of reduction indicators are provided, each set corresponding to a particular size copy paper. Each set of indicators can be moved by the operator to frame the document to be copied and simultaneously the reduction optical system is set to provide proper adjustment for all system parameters. The indicators are continuously viewable by the operator. An embodiment is disclosed wherein each indicator is positioned so that reduction ratio is maintained whatever the copy paper size.
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公开(公告)号：FR2363819A1
公开(公告)日：1978-03-31
申请号：FR7724676
申请日：1977-08-01
Applicant: IBM
Inventor： GIBSON DAVID K , JONES RICK O
IPC: G03B27/34 , G03B27/50 , G03G15/04 , G03G15/041 , G03G21/00
Abstract: A continuously variable reduction optical system for document copiers including various embodiments. A scanning optical system embodiment is disclosed for corner referenced documents. Full-exposure optical system embodiments are disclosed for both single-edge referenced and corner referenced documents. The systems can make use of single focus lens or variable focus lens. Specific mechanisms are disclosed for continuously variable adjustments to magnification, to total conjugate length, to image position, to scan speed and scan length and to leading edge registration. All adjustments are tied together under the control of the machine operator.
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Patent Agency Ranking
公开(公告)号：FR2302948A1
公开(公告)日：1976-10-01
申请号：FR7602497
申请日：1976-01-27
Applicant: IBM
Inventor： GIBSON DAVID K
Abstract: A xerographic copier having a plurality of copy sheet supply bins wherein the bin paper stacks not currently in use are lowered to an intermediate position until such later time whereat a different stack is selected for use. A sensing switch senses the top of each non-used stack and bidirectionally maintains the stack at its intermediate level. Swelling of the paper stack, due to humidity and the like, causes the stack's elevator platform to lower under the control of the sensing switch. This sensing switch also senses the top of the stack when the stack is in use, and bidirectionally maintains the top of this stack at a higher sheet feed position. These two sensing functions are provided by a single pivoted member which engages the top sheet of the stack. This pivoted member controls a switch means. The selection of a stack causes a change in the physical position of the pivot and the switch means for this stack. This positional change causes the top sheet of this stack to be elevated to the sheet feed position.
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公开(公告)号：CA1087427A
公开(公告)日：1980-10-14
申请号：CA285293
申请日：1977-08-23
Applicant: IBM
Inventor： GIBSON DAVID K , JONES RICK O
Abstract: A continuously variable reduction optical system for document copiers including various embodiments. A scanning optical system embodiment is disclosed for corner referenced documents. Full-exposure optical system embodiments are disclosed for both single-edge referenced and corner referenced documents. The systems can make use of single focus lens or variable focus lens. Specific mechanisms are disclosed for continuously variable adjustments to magnification, to total conjugate length, to image position, to scam speed and scan length and to leading edge registration. All adjustments are tied together under the control of the machine operator.
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公开(公告)号：CA1082015A
公开(公告)日：1980-07-22
申请号：CA285286
申请日：1977-08-23
Applicant: IBM
Inventor： DANIELS RAYMOND A , GIBSON DAVID K , KUMMLI PAUL , SNELL SPENCER A , ULRICH MICHAEL H
Abstract: A continuously variable reduction imaging system for an electrophotographic copier machine is provided, comprising a glass platen upon which a document to be copied is placed; a mount for carrying photoreceptive material; main motive means for moving said amount and source of illumination, a document scanning system comprised of a scanning carriage for directing illumination from said source to said document: means for driving said scanning carriage; an optics system for directing illumination from said document to produce an image on said photoreceptive material, said optics system including a lens; and an optics positioning system wherein said lens is adjusted in a continuously variable manner whereby the magnification ratio of said imaging system may be set in a continuously variable manner between two boundaries.
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公开(公告)号：FR2363814A1
公开(公告)日：1978-03-31
申请号：FR7724679
申请日：1977-08-01
Applicant: IBM
Inventor： DANIELS RAYMOND A , GIBSON DAVID K , KUMMLI PAUL , SNELL SPENCER A , ULRICH MICHAEL H
Abstract: A continuously variable reduction scanning optical system wherein a preferred embodiment is disclosed with mechanisms for continuously adjusting the magnification ratio, the total conjugate length, scan speed, scan length, and leading edge registration. Either a single focus or variable focus lens can be used.
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公开(公告)号：CA1027981A
公开(公告)日：1978-03-14
申请号：CA246914
申请日：1976-03-02
Applicant: IBM
Inventor： GIBSON DAVID K
Abstract: A xerographic copier having a plurality of copy sheet supply bins wherein the bin paper stacks not currently in use are lowered to an intermediate position until such later time whereat a different stack is selected for use. A sensing switch senses the top of each non-used stack and bidirectionally maintains the stack at its intermediate level. Swelling of the paper stack, due to humidity and the like, causes the stack's elevator platform to lower under the control of the sensing switch. This sensing switch also senses the top of the stack when the stack is in use, and bidirectionally maintains the top of this stack at a higher sheet feed position. These two sensing functions are provided by a single pivoted member which engages the top sheet of the stack. This pivoted member controls a switch means. The selection of a stack causes a change in the physical position of the pivot and the switch means for this stack. This positional change causes the top sheet of this stack to be elevated to the sheet feed position.
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