Operation control method of copying machine

Abstract

Abstract PURPOSE:To deal with processing by the necessary irreducible movement extent of a scanner even when original density detection is required additionally and to minimize the loss of time required for copying by controlling density detecting operation and copying operation on the basis of the output of an original size detecting means. CONSTITUTION:When a provide transmission type photosensor 10 detects the length of an original 5 while the original is fed from an original table 4, the scanner 18 is driven in a return direction R and stops and stands by at a position corresponding to the rear end of the original. When the original 5 further moves forth and stops at an exposure part, the scanner 18 is driven again in the return direction R and an exposure lamp 12 is turned on at the same with a low voltage for image density reading, so that original density is detected by a density sensor 20. When the scanner 18 reaches a home position shown by an alternate long and two dashes line, the scanner 18 is driven in a forward direction F and the exposing operation is performed by the exposure lamp 12 which is driven with a voltage adjusted corresponding to the original density.

Inventors

• 👤 Masateru Mutsuhira
• 👤 六平　政輝

Bibliographic Details