Color image reading apparatus or color image forming apparatus capable of performing color adjustment

Claim 2

A color copying machine comprising: reading means for reading a color original; correction means for performing a color correction processing of a color image signal from said reading means; image forming means for forming a color image based on a correction output from said correction means; designation means for designating a predetermined region of the color original read by said reading means, wherein the color original is one formed by said image forming means; setting means for setting a correction characteristic of the color correction processing based on the color image signal read by said reading means, wherein said setting means sets a correction characteristic on the basis of a color image signal of said region designated by said designating means.

Claim 3

A color copying machine according to claim 1, wherein said setting means includes memory means for storing a predetermined value and said reading means reads a predetermined standard color original, and wherein said setting means sets said correction characteristic based on a read-out value from said reading means and said stored predetermined value.

Claim 4

A color copying machine according to claim 2, wherein said setting means sets said correction characteristic based on a plurality of read-out values and a plurality of stored values.

Claim 5

A color copying machine according to claim 1, wherein said correction means has a color correction characteristic and said setting means sets said color correction characteristic.

Claim 8

A method according to claim 5, wherein after said determining step, an ordinary color original is read by said color image reading unit and an output signal from said color image reading unit is corrected by said color correction unit and then said color image forming unit forms a reproduced image.

Claim 9

A method according to claim 5, wherein said determining step is a step in which said single set of color correction coefficients is obtained through a method of least squares including an operation for obtaining a difference between a color recorded by said recording unit and a color recorded by said reading unit.

Claim 10

A color image forming apparatus comprising: output means for forming a color image on a recording medium using a plurality of different coloring agents; means for generating a pattern signal corresponding to a predetermined color; memory means for storing a value corresponding to the pattern signal generated by said pattern signal generating means; conversion means for converting a pattern corresponding to the pattern signal from said generating means into a plurality of color component signals, wherein said pattern has been formed on said recording medium by said output means, and wherein said conversion means reads colors within a predetermined region, manually set, on said recording medium; and means for discriminating an output characteristic of said output means based on a signal value obtained by said conversion means corresponding to said pattern on said recording medium and said value in said memory means, and for displaying the result of said discrimination.

Claim 11

A color image forming apparatus comprising: output means for forming a color image on a recording medium using a plurality of different coloring agents; means for generating a pattern signal corresponding to a predetermined color; memory means for storing a value corresponding to the pattern signal generated by said pattern signal generating means; conversion means for converting a pattern corresponding to the pattern signal from said generating means into a plurality of color component signals, wherein said pattern has been formed on said recording medium by said output means, and wherein said conversion means reads colors within a predetermined region, manually set, on said recording medium; and means for discriminating an output characteristic of said output means based on a signal value obtained by said conversion means corresponding to said pattern on said recording medium and said value in said memory means, and for displaying the result of said discrimination.

Claim 12

A color image forming apparatus according to claim 8, wherein the result of said discrimination is displayed independently for each color component signal.

Claim 13

A color image forming apparatus according to claim 8, wherein said conversion means includes an image scanner for scanning said recording medium on which said pattern has been formed by said output means.

Claim 14

A color image forming apparatus according to claim 8, wherein said pattern signal corresponds to a plurality of colors.

Claim 17

A method according to claim 12, wherein said color image forming unit includes an electronic photoprinter.

Claim 18

A method according to claim 12, wherein said reading unit includes color line image sensor.

Claim 19

A method according to claim 12, wherein said determining step is performed such that the color pattern read by said reading unit coincides with the color pattern to be recorded by said image forming unit.