Photocopying – Contact printing – Light boxes
Patent
1989-08-02
1992-12-15
Braun, Fred L.
Photocopying
Contact printing
Light boxes
355209, G03G 2100
Patent
active
051721783
ABSTRACT:
An image forming apparatus includes an original detector for reading the size of an original, an upper sheet cassette, a lower sheet cassette, and a third sheet cassette for holding sheets of a plurality of types with different sizes, a display unit for indicating the sizes of the sheets contained in these cassettes, and a control circuit for automatically selecting the sheets corresponding to the original size, among other sheets contained in the cassettes, on the basis of the result of detection by the original detector. The control circuit controls the display unit so that the display unit indicates the sizes of all the sheets contained in the cassettes before the start of an image forming operation, and indicates only the size of the selected sheets after start of the image forming operation.
REFERENCES:
patent: 4314754 (1982-02-01), Shimizu et al.
patent: 4406537 (1983-09-01), Mori
patent: 4440487 (1984-04-01), Miura
patent: 4811051 (1989-03-01), Masuda et al.
patent: 4908672 (1990-03-01), Ito
patent: 4933720 (1990-06-01), Takano et al.
patent: 5006895 (1991-04-01), Hashimoto et al.
Imada Norio
Oushiden Hideshi
Braun Fred L.
Kabushiki Kaisha Toshiba
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