US 5,212,517 AGranted

Copier having copy mode selection means

AssigneeKonica Corporation

InventorsYasushi Yamada, Tsuyoshi Mizubata, Masaru Ushio, Osamu Murata, Tomoya Motoyoshi, Yoshikazu Maekawa, Masanobu Kawano

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Abstract

The invention provides a copying apparatus for producing a required number of copy sets of two-sided copy from document sheets of an original by selecting one of ADF mode in which the required number of copy sets are produced simultaneously and RDH mode in which the required number of copy sets are produced one set by one set.

Claims11

Dependent claims

A copying apparatus for producing a desired number of sets of duplex copy sheets from a set of original document sheets, comprising:

means for inputting the desired number of sets of duplex copy sheets and generating a copy set signal in response thereto,
a platen;
copying means for copying a page of an original document sheet to a side of a sheet of a copy paper when said page is disposed upon said platen;
document feeding means for feeding the original document sheets from a document tray, for placing the original document sheets on said platen, and for returning the original document sheets to said document tray;
copy paper conveying means for feeding a sheet of copy paper to said copying means, for conveying said copy paper to an intermediate tray after copying one page of an original document sheet upon a first side of said copy paper, and for conveying said copy paper from said intermediate tray to said copying means for copying another page of an original document sheet upon the second side of said copy paper;
controlling means for controlling said document feeding means, said copying means, and said copy paper conveying means so as to provide a first and a second copy mode wherein,
said first copy mode comprises copying a first page of said document sheets onto a first side of a desired number of copy papers corresponding to the desired number of sets of duplex copy sheets, copying a second page of said document sheets onto a second side of said desired number of copy papers, and repeating the steps of copying a first page and copying a second page on a desired number of copy papers to copy all pages of said document sheets;
and
said second copy mode comprises copying every other page of said document sheets onto a first side of single ones of a plurality of copy papers, copying the remaining pages of said document sheets on a second side of single ones of said plurality of copy papers, and repeating the steps of copying every other page and copying the remaining pages until the desired number of sets of duplex copy sheets has been made;
and
selecting means for comparing said copy set signal with a threshold value, said threshold value representing a predetermined number of sets of duplex copy sheets, and selecting said first mode when said inputted desired number is at least said threshold value.

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Dependencies are inferred from the claim text.

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Abstract

A copying apparatus for producing a desired number of sets of duplex copy sheets from a set of original document sheets, comprising:

means for inputting the desired number of sets of duplex copy sheets and generating a copy set signal in response thereto,
a platen;
copying means for copying a page of an original document sheet to a side of a sheet of a copy paper when said page is disposed upon said platen;
document feeding means for feeding the original document sheets from a document tray, for placing the original document sheets on said platen, and for returning the original document sheets to said document tray;
copy paper conveying means for feeding a sheet of copy paper to said copying means, for conveying said copy paper to an intermediate tray after copying one page of an original document sheet upon a first side of said copy paper, and for conveying said copy paper from said intermediate tray to said copying means for copying another page of an original document sheet upon the second side of said copy paper;
controlling means for controlling said document feeding means, said copying means, and said copy paper conveying means so as to provide a first and a second copy mode wherein,
said first copy mode comprises copying a first page of said document sheets onto a first side of a desired number of copy papers corresponding to the desired number of sets of duplex copy sheets, copying a second page of said document sheets onto a second side of said desired number of copy papers, and repeating the steps of copying a first page and copying a second page on a desired number of copy papers to copy all pages of said document sheets;
and
said second copy mode comprises copying every other page of said document sheets onto a first side of single ones of a plurality of copy papers, copying the remaining pages of said document sheets on a second side of single ones of said plurality of copy papers, and repeating the steps of copying every other page and copying the remaining pages until the desired number of sets of duplex copy sheets has been made;
and
selecting means for comparing said copy set signal with a threshold value, said threshold value representing a predetermined number of sets of duplex copy sheets, and selecting said first mode when said inputted desired number is at least said threshold value.

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