Patents by Inventor Kastsuhiko Makita

Kastsuhiko Makita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Copier having superimposed and duplex copying capabilities and capable of discriminating false paper jam and real paper jam
    Patent number: 5034771
    Abstract: A copier having superimposed copying and duplex copying capabilites and free from malfunctions ascribable to false jam detection which is caused by sensor errors. When a paper jam is detected due to the failure of a sensor, the copier determines whether or not a jamming paper sheet actually exists instead of immediately determining that a jam has occurred. If no jamming paper sheet exists, the copier does not perform any paper discharging movement by determining that the detection is caused by a sensor error and disables the superimposed copying and duplex copying functions.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: July 23, 1991
    Assignee: Ricoh Company, Ltd.
    Inventor: Kastsuhiko Makita