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公开(公告)号：BR7208877D0
公开(公告)日：1974-01-03
申请号：BR887772
申请日：1972-12-15
Applicant: IBM
Abstract: A toner usage sensing system for an electrostatic reproduction apparatus which utilizes multicomponent developer material including electrostatically charged toner to develop electrostatic latent images on a photosensitive plate directly senses the amount of toner consumed by the reproduction process. Since the average toner body charge (coulomb/gram) is constant for a given desired toner concentration, the weight of the electrostatically charged toner consumed in sensed by measuring the charge removed from the developer material during the reproduction process. The developer unit containing the developer material is electrically isolated from the remainder of the reproduction apparatus and grounded through a single connection. The current in the ground connection returns charge to the developer unit sufficient to replace the charge removed and is sensed to obtain a measurement of the toner consumed. A measured amount of toner is added to the developer material when a preselected amount of charge has been sensed as being removed. In one embodiment, a DC motor drives the toner replenisher and rotates an amount proportional to the sensed current thereby providing a mechanical storage of the incremental amounts of toner removed on widely spaced reproduction runs.
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公开(公告)号：BR7209024D0
公开(公告)日：1973-09-20
申请号：BR902472
申请日：1972-12-21
Applicant: IBM
Abstract: Cleaning apparatus for cleaning the residual toner image from an electrostatic plate of an electrostatic reproduction apparatus incorporates an open celled foam wiper which is mounted for wiping engagement with the plate. The foam wiper is mounted adjacent a conductor which is biased to attract charged toner particles to the wiper as the toner image moves relative therepast. The wiper is periodically cleaned by a serrated or grooved portion of the plate which follows the image and mechanically dislodges toner from the wiper. A reverse bias is applied to the conductor as the serrations on the plate move past the wiper creating a field between the wiper and the plate which repels toner from the wiper to the plate. The toner is carried by the serrations on the plate to the developer unit for use by the electrostatic reproduction apparatus.
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公开(公告)号：BR7902577A
公开(公告)日：1979-11-27
申请号：BR7902577
申请日：1979-04-26
Applicant: IBM
Abstract: An electrophotographic copier includes an automatic document feeder (ADF) 16 operable to feed sheets in turn from a feed stack. In order to produce duplex copies from single sides of the original documents, two copying runs are performed. In the first run, the ADF is controlled by logic circuitry 140 and input circuits 165, 146 to pass odd numbered documents from the feed stack to a receiving stack directly. Even numbered documents are copied. At the end of the run, when all sheets have passed through ADF, the receiving stack is re-positioned to form the feed stack, and a stack of produced copies is placed into the copy feed bin. In the second run, copies of the even numbered documents are produced on the back of the copy papers. A collator receives the copies produced by both runs. During the first run, the collator 20 is controlled by logic 142 to stack the sheets such that no re-ordering is necessary when they are transferred to the copy feed bin.
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公开(公告)号：BR7208873D0
公开(公告)日：1974-01-03
申请号：BR887372
申请日：1972-12-15
Applicant: IBM
Inventor： HOBGOOD G , THOMPSON B , DAVIDGE R , QUEENER C , SPEARS J
Abstract: An array of test probes individually mounted to a test fixture is provided for contacting a substantially increased number of pads on high density circuit chips. The probes are mounted in side by side relationship in groups with each group of probes making contact with respective pads that are proximately positioned and, preferably, on the same radial line of a chip. Each probe has a contact blade carried by parallel springs of minimum gram load to assure uniform force deflection contact ratios and each blade-spring arrangement acts as the electrical conducting circuit for that probe of the array.
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Patent Agency Ranking
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公开(公告)号：ZA814987B
公开(公告)日：1982-07-28
申请号：ZA814987
申请日：1981-07-21
Applicant: IBM
Inventor： DAVIDGE R , QUEENER C , VANDERSLICE J
Abstract: Documents are automatically recirculated for copying by a copier from a stack which is accessed top document downward. Documents are stacked faceup in an upper tray and moved as a group to a lower tray where they are stacked facedown, with the first document in the upper tray appearing in a facedown position at the bottom of the lower tray. The top document in the lower tray is then removed for copying and returned to the bottom of the upper tray, thus peserving the original document order for further copying. The copier normally scans stationary documents placed on a glass platen; for example, individual sheets of paper or book pages may be placed on the glass platen and held stationary while the optics causes light to scan the page. During automatic recirculation of stacks of the documents, however, the scanning optics is "parked" and documents removed from the lower tray are imaged while scanned past a fixed exposure area on the glass platen on the way back to the upper tray.
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公开(公告)号：ZA6906369B
公开(公告)日：1971-04-28
申请号：ZA6906369
申请日：1969-09-08
Applicant: IBM
Inventor： DUELTGEN R , QUEENER C
CPC classification number: G03G21/0005 , G03G5/005 , G03G5/14726 , G03G21/0035 , G03G2221/0005
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