Copier for greater than standard length documents

G - Physics – 03 – G

Patent

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G03G 15/22 (2006.01) G03G 15/047 (2006.01)

Patent

CA 1101920

ABSTRACT OF THE DISCLOSURE An electrostatic reproduction machine having an improved control circuit to control turn on of a discharge lamp positioned to discharge a moving photoconductive belt member prior to development thereof. The control circuit enables a first mode of operation for copying standard length documents of 8 1/2 inches in length and a second mode of opera- tion for copying documents greater in length than 8 1/2 inches without erasing image areas by the discharge lamp. For the second mode of operation an RC adjustable circuit enables a suitable delay before lamp turn on. A machine operator can easily select the desired mode of operation.

305062

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