Image forming apparatus capable of inscribing a desired date on copying paper

Claim 2

An image forming apparatus, comprising: an image carrying member, electrostatic latent image forming means for forming an electrostatic latent image corresponding to an image of a document on said image carrying member, additional information recording means for forming an electrostatic image corresponding to additional information other than said image of said document, clock means for giving data of present date, means for reading the data of present data from said clock means, storage means for storing said data of present data read by said reading means, changing means for changing the contents of said data of present data stored in said storage means, and control means for actuating said additional information recording means based on said data of date changed by said changing means.

Claim 3

An image forming apparatus according to claim 1, wherein said clock means comprises a clock IC backed up by a power source.

Claim 4

An image forming apparatus according to claim 1, wherein said additional information recording means includes a LED array composed of a plurality of light emitting elements and a control circuit for controlling the switching of each of said light emitting elements.

Claim 5

An image forming apparatus according to claim 1, further comprising display means for displaying said data of present data read from said clock means.

Claim 6

An image forming apparatus according to claim 4, wherein said display means further displays said contents of said data of present data which is changed by said changing means.

Claim 7

An image forming apparatus according to claim 1, wherein said changing means includes a key for advancing said data of present data one day and a key for setting back said data of present date one day.

Claim 8

An image forming apparatus, comprising: a photosensitive member, first exposure means for projecting an optical image corresponding to an image of a document onto the surface of said photosensitive member, additional information generating means for generating additional information other than said image of said document, a second exposure source for forming the image of additional information generated by said additional information generating means; a first memory for memorizing the data of present date, means for reading the data of present date from said first memory, a second memory for storing the date of present data read by said reading means, input means for receiving data of change to be used in effecting a necessary change of the data of present data stored in said second memory; and means for executing said necessary change in the data of date stored in said second memory based on said data of change received in said input means and for sending the data of data changed to said additional information generating means.

Claim 9

An image forming apparatus, comprising: a photosensitive member, first exposure means for projecting an optical image corresponding to an image of a document onto the surface of said photosensitive member, additional information generating means for generating additional information other than said image of said document, a second exposure source for forming the image of additional information generated by said additional information generating means; a first memory for memorizing the data of present date, means for reading the data of present date from said first memory, a second memory for storing the date of present data read by said reading means, input means for receiving data of change to be used in effecting a necessary change of the data of present data stored in said second memory; and means for executing said necessary change in the data of date stored in said second memory based on said data of change received in said input means and for sending the data of data changed to said additional information generating means.

Claim 10

An image forming apparatus according to claim 7, wherein said second exposure source comprises a LED array.

Claim 11

An image forming apparatus according to claim 7, wherein said first memory is a clock IC backed up by a power source.

Claim 12

An image forming apparatus which forms an image of a document on an image carrying member, comprising: position entry means for specifying a data writing area on a document; data entry means for specifying data to be written; data write means for writing entered data on an area of the image carrying member corresponding to the area specified with respect to the document while the light from the specified area of the document is cut off; memory means for storing data for writing; means for reading the data from said memory means and for storing the read data; means for changing the contents of the read data without changing the data stored in said memory means; and means for sending the changed data to said data write means.

Claim 13

An image forming apparatus which forms an image of a document on an image carrying member, comprising: position entry means for specifying a data writing area on a document; data entry means for specifying data to be written; data write means for writing entered data on an area of the image carrying member corresponding to the area specified with respect to the document while the light from the specified area of the document is cut off; memory means for storing data for writing; means for reading the data from said memory means and for storing the read data; means for changing the contents of the read data without changing the data stored in said memory means; and means for sending the changed data to said data write means.

Claim 14

An image forming apparatus according to claim 10, wherein said the data stored in said memory means is the present date.

Claim 15

An image forming apparatus according to claim 10, wherein said data write means comprises a light-shading element array arranged as a shade in a light path for exposing a document image onto the image carrying member and a light-emitting device array arranged before the light-shading array relative to said image carrying member.