1.
    发明专利
    未知

    公开(公告)号:DE69325113T2

    公开(公告)日:1999-11-04

    申请号:DE69325113

    申请日:1993-02-08

    Applicant: CANON KK

    Abstract: An image forming apparatus includes an image bearing member (2); a charging member (1), contactable to the image bearing member (2), for charging the image bearing member (2); and a detector for detecting an electric current flowing through the charging member (1) when the charging member (1) changes a potential of a predetermined area of the image bearing member (2) from a potential Vl to which the image bearing member (2) is charged by the charging member to a potential V2 which is different from the potential V1. The state of the image bearing member such as its thickness can be detected by these measures.

    5.
    发明专利
    未知

    公开(公告)号:DE3536603A1

    公开(公告)日:1986-04-24

    申请号:DE3536603

    申请日:1985-10-14

    Applicant: CANON KK

    Abstract: There is disclosed an apparatus for reading a microfilmed image for image reproduction on a hard copy or the like. The operator can designate the area of image to be read, thus enabling exact image reproduction without loss of image or without unnecessary margins.

    7.
    发明专利
    未知

    公开(公告)号:DE69325113D1

    公开(公告)日:1999-07-08

    申请号:DE69325113

    申请日:1993-02-08

    Applicant: CANON KK

    Abstract: An image forming apparatus includes an image bearing member (2); a charging member (1), contactable to the image bearing member (2), for charging the image bearing member (2); and a detector for detecting an electric current flowing through the charging member (1) when the charging member (1) changes a potential of a predetermined area of the image bearing member (2) from a potential Vl to which the image bearing member (2) is charged by the charging member to a potential V2 which is different from the potential V1. The state of the image bearing member such as its thickness can be detected by these measures.

    SEALING MEMBER, METHOD FOR ATTACHING STORING MEDIUM, PROCESSING CARTRIDGE AND ELECTRO-PHOTOGRAPHIC IMAGE FORMING DEVICE

    公开(公告)号:JP2001022249A

    公开(公告)日:2001-01-26

    申请号:JP19537099

    申请日:1999-07-09

    Applicant: CANON KK

    Abstract: PROBLEM TO BE SOLVED: To easily detach a recording medium which is a reuse part from a processing cartridge by reading and writing specified information in a non- contact state by a storing medium controlling means that a main body possesses. SOLUTION: A nonvolatile memory 1 as the storing medium in which the specified information is read and written in the non-contact state is arranged in a groove as a recessed part provided on the external surface of a developing unit 33U1. The manufacture logo of the processing cartridge 33, a product number or the like are printed on a sealing member 11 consisting of a resin seal that has flexibility and is able to be peeled. An I/F on the side of an image forming device main body communicating with the nonvolatile memory 1 in the non-contact state is controlled by a memory controlling means as the storing medium controlling means constituting a drum life detecting means. The specified information such as for instance the number of rotation or the rotating time of a photosensitive drum is written and read to/from the nonvolatile memory 1 on the side of the processing cartridge 33 in the non-contact state by the I/F.

Patent Agency Ranking