Patent · US Expired

Copying machine with a variable magnification device

US4618252A · kind A · utility

4Cited by
1References
5Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 22, 1985
Grant dateOct 21, 1986
Priority date
Expiry dateMar 22, 2005

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G15/6502
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A copying machine with a variable magnification device comprising two paper cassettes mounted in a drawable manner in vertically spaced relation and a select key for the paper cassettes, wherein the desired cassette can be selected as a source of the copying paper by operating the select key. The upper paper cassette is provided with the copying paper for variable magnification copying, and the upper cassette is automatically selected as the paper source when a detector indicates that the variable magnification copying mode has been selected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.