Minolta Camera Kabushiki Kaisha

Minolta Camera Corporation

Yutaka Irie

Masazumi Ito

Kenji Shibazaki

Tomoji Murata

Minoru Nakamura

Yoshikazu Ikenoue

Hideo Ito

Kenzo Nagata

Shunji Yamamoto

Yukio Tokura

Shigemitsu Shimizu

Kadotaro Nishimori

Toshio Matsui

Yoshihisa Kawai

Soichi Iwao

Yasuhiko Doi

Norihiko Suzuki

Shigemitu Shimizu

Disclosed herein is a device for setting a copying magnification in an electrophotographic copying apparatus. The device comprises means for manually inputting a numerical value, a plurality of memory means, selection key means for selecting one from the plurality of memory means and control means for memorizing a numerical value input by the numerical value input means in said one of memory means selected by the selection key means, so that the copying apparatus operates to set a copying magnification by numerical value memorized in said one of memory means.

Copying magnification setting device for an electrophotographic copying

An image forming apparatus that is capable of providing various copy ratios includes an original table that can receive an original document from an image carrier. The original is then illuminated, and a focusing lens system is capable of focusing reflected light from the original document onto a photosensitive member. The focusing lens system is movable. A drive assembly can cause relative movement of the original and a light system for illuminating the original, while a second drive member can vary the distance from the original to the focusing lens system whereby the image stays within the fixed focal length of the optical system while accommodating the speed necessary for a specified copy ratio.

Disclosed herein is a device for setting a copying magnification in an electrophotographic copying apapratus. The device comprises means for manually inputting a numerical value, a plurality of memory means, selection key means for selecting one from the plurality of memory means and control means for memorizing a numerical value input by the numerical value input means in said one of memory means selected by the selection key means, so that the copying apparatus operates to set a copying magnification by a numerical value memorized in said one of memory means.

Disclosed herein is a device for setting a copying magnification in an electrophotographic copying apparatus. The device comprises means for manually inputting a numerical value, a plurality of memory means, selection key means for selecting one from the plurality of memory means and control means for memorizing a numerical value input by the numerical value input means in said one of memory means selected by the selection key means, so that the copying apparatus operates to set a copying magnification by a numerical value memorized in said one of memory means.

A copying machine capable of operating in the divisional copying mode in which first and second documents, such as the successive pages of an open book, placed on the contact glass are copied on different recording medium surfaces, respectively. The copying machine is provided with copying condition setting means capable of individually setting different copying conditions, such as copied image density, for the first and second documents, respectively. The first document and the second document are scanned under the copying condition set for the first document and under the copying condition set for the second document, respectively, and the first and second documents are copied on different recording medium surfaces, respectively.

Copying machine designed to successively copy two different documents on

A copying machine having the capability of reproducing an image at different magnifications from either a stored or calculated magnification ratio is provided. The size of the original and the size of the various copying papers available are calculated to determine an optimum magnification ratio. A preset value of optical magnification ratios can be provided within the copying machine. A controller can determine whether the calculated magnification ratio can be utilized within the preset predetermined range of values and the corresponding control of the copier machine can be effected in accordance with that decision.

Copying machine having a capability of reproducing images at different

An improved copying magnification capacity is provided to an electrophotographic copying apparatus. The copier has a numeric data display that can disclose numeric data that can be manually input into the machine. The numeric data can be stored in a memory as a predetermined copying magnification value. The copier has the capability of establishing a copying magnification value that can be easily adjusted when the magnification of an actually obtained copy deviates from an established desired value. The stored numeric value can be used in the control for setting a magnification value.

There is disclosed a control apparatus for copying machines or the like which have a function of autoresetting operating conditions for the machine to standard conditions upon lapse of a specified period time after the completion of operation of the machine or after a predetermined input procedure and is operable with a key device associated with the machine for permitting the operation of the machine, wherein the control apparatus effects the autoresetting function to immediately reset the operating conditions to the standard conditions when the machine has been brought out of the operation permitted state by the key device, irrespective of lapse of the specified period of time for the autoresetting. When the user withdraws the key device from the machine, the operating conditions change to the standard conditions, thereby efficiently preventing the objection that the machine will subsequently operate under the conditions undesired by the next user.

Copying machine with automatic resetting control features

A copying machine having the capability of reproducing an image at different magnifications from either a stored or calculated magnification ratio is provided. The size of the original and the size of the various copying papers available are calculated to determine an optimum magnification ratio. A preset value of optical magnification ratios can be provided within the copying machine. A controller can determined whether the calculated magnification ratio can be utilized within the preset predetermined range of values and corresponding control of the copier machine can be effected in accordance with that decision.

There is disclosed an image density control apparatus for copying machines in which an area of a pattern image that is formed by projecting a reference pattern through an optical system is limited to a constant area irrespective of the copy magnification. Then the pattern image is developed and its toner density is detected to serve for controlling the image density. Accordingly, the image density is controlled with accuracy, irrespective of the copy magnification.

Image density control apparatus for copying machines

Disclosed herein is a device for setting a copying magnification in an electrophotographic copying apparatus. The device comprises means for manually inputting a numerical value, a memory means having a plurality of memory locations, selection key means for selecting one from the plurality of memory locations and control means for storing a numerical value input by the numerical value input means in said one of the memory locations selected by the selection key means, so that the copying apparatus operates to set a copying magnification by a numerical value stored in said one of the memory locations.

An electrophotographic copying machine of the transfer type which comprises a reciprocating member for exposing a photoconductive member to the image of an original when the machine is in a specified copying mode of multi-copying modes, the reciprocating member moves in a reciprocation mode of operation for exposing the photoconductive member and performs a supplementary reciprocating movement enables the reciprocating member to reciprocate repeatedly and continuously without stopping, permitting a paper feeding assembly to feed sheets of paper in succession without any overlapping problem.

Electrophotographic copying machine

A counter control device for an electrophotographic copying machine of a type having a preset counter device is selectively operable in one of a multi-copy mode wherein a copying operation is repeated to produce a plurality of copies while copying papers which are to have an image affixed thereto are automatically fed one at a time and a manual feed mode wherein the copying operation is carried out by the use of copying papers which are to have an image affixed thereto and which are fed manually one at a time. The counter control device includes a counter for counting the number of copies being made or left unfinished each time one cycle of the copying operation is completed. The counted value is displayed by a display unit which is also operable even when the machine is set to operate in the multi-copy mode.

Counter control in electrophotographic copier

An improved mechanical arrangement which includes a controlled device, an operational device for adjusting an active state of the controlled device through external operations and a control device for controlling the active state of the controlled device in response to operations of the operational device. The operational device includes an indicating arrangement for indicating changes in the active state of the controlled device stepwise, an UP operating arrangement for increasing one step by one step an indication of the indicating arrangement and a DOWN operating arrangement for decreasing one step by one step the indication of the indicating arrangement, and thus the mechanical arrangement has been made free from erroneous operations due to the improved operational efficiency, simple in structure and highly reliable in actual use.

Growing community of inventors

Toyokawa, Japan

Yutaka Irie