# US 11,310,395 B2 · Image forming apparatus performing color revision using color recognition information of a user

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- Number: US 11,310,395 B2
- Document ID: US11310395B2
- Status: Granted
- Kind: B2
- Application number: 17/279,766
- Filed: 2019-08-12
- Published: 2021-10-28
- Granted: 2022-04-19
- Earliest claimed: 2019-03-07
- Assignees: Hewlett-Packard Development Company, L.P.
- Applicants: Hewlett-Packard Development Company, L.P.
- Inventors: Jung-Hun Kim; Sangmi Kim; Sejong Kim; Hyein Lee
- Web page: https://patentgrep.com/patent/US11310395B2

## CPC

- H04N 1/6027: {Correction or control of colour gradation or colour contrast (H04N1/6058 takes precedence)}
- G06F 3/1208: {resulting in improved quality of the output result, e.g. print layout, colours, workflows, print preview}
- G06F 3/1247: {by conversion to printer ready format}
- G06F 3/1257: {by using pre-stored settings, e.g. job templates, presets, print styles}
- G06F 3/1258: {by updating job settings at the printer}
- G06V 10/56: relating to colour
- H04N 1/6008: {with primary colour signals, e.g. RGB or CMY(K)}
- H04N 1/6075: {Corrections to the hue}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING

## Abstract

An example image forming apparatus includes a communication device to receive print data, a print engine to form an image, a memory to store information on a saturation that allows to recognition of a predetermined hue for each user, and a processor to identify a user corresponding to the received print data, and control the print engine to print the received print data based on saturation information of the identified user.

## Claims

### Claim 1

An image forming apparatus, comprising:
a communication device to receive print data;
a print engine to form an image;
a memory to store information on a saturation that allows recognition of a predetermined hue for each user; and
a processor to:
identify a user corresponding to the received print data, and
control the print engine to print the received print data based on saturation information of the identified user.

### Claim 2 (depends on 1)

The apparatus as claimed in claim 1, wherein the processor corrects a cyan, magenta, yellow, black (CMYK) value of the print data to allow the predetermined hue of the print data to have a saturation at which the identified user recognizes the predetermined hue by using the saturation information of the identified user.

### Claim 3 (depends on 2)

The apparatus as claimed in claim 2, wherein the processor identifies a minimum value of the saturation at which the identified user recognizes the predetermined hue by using the saturation information of the identified user, and corrects the CMYK value of the print data using a CMYK correction value corresponding to the identified minimum value.

### Claim 4 (depends on 2)

The apparatus as claimed in claim 2,
wherein the predetermined hue is at least one of R (RED), G (GREEN) or B (BLUE), and
wherein the processor corrects values of M (MAGENTA) and Y (YELLOW) of the print data using saturation information on the R (RED) hue, corrects values of C (CYAN) and Y (YELLOW) of the print data using saturation information on the G (GREEN) hue, and corrects values of C (CYAN) and M (MAGENTA) of the print data using saturation information on the B (BLUE) hue.

### Claim 5 (depends on 2)

The apparatus as claimed in claim 2, wherein the processor controls the print engine to print the print data by reflecting the saturation information of the identified user and apparatus information of the image forming apparatus.

### Claim 6 (depends on 2)

The apparatus as claimed in claim 2,
wherein the memory stores vision information for each user, and
wherein the processor corrects at least one of a C (CYAN), a M (MAGENTA), or a Y (YELLOW) value of the print data using the saturation information, and corrects a B (BLACK) value of the print data using the vision information.

### Claim 7 (depends on 1)

The apparatus as claimed in claim 1, wherein the processor receives additional correction information on at least one of a C (CYAN), a M (MAGENTA), a Y (YELLOW), or a K (BLACK) value from an external device and controls the print engine to print the print data by additionally reflecting the received additional correction information.

### Claim 8

A print controlling method, the method comprising:
testing whether a user recognizes a predetermined hue for each of a plurality of saturations;
generating information on a saturation that allows recognition of the predetermined hue using a result of the testing;
correcting print data by reflecting the information on the saturation; and
transmitting the corrected print data to an image forming apparatus.

### Claim 9 (depends on 8)

The method as claimed in claim 8, wherein the correcting comprises correcting a cyan, magenta, yellow, black (CMYK) value of the print data to allow the predetermined hue of the print data to have a saturation at which the user recognizes the predetermined hue by using the saturation information.

### Claim 10 (depends on 9)

The method as claimed in claim 9, wherein the correcting comprises identifying a minimum value of the saturation at which the user recognizes the predetermined hue by using the saturation information, and correcting the CMYK value of the print data by using a CMYK correction value corresponding to the identified minimum value.

### Claim 11 (depends on 9)

The method as claimed in claim 9,
wherein the predetermined hue is at least one of R (RED), G (GREEN) or B (BLUE), and
wherein the correcting comprises:
correcting values of M (MAGENTA) and Y (YELLOW) of the print data using saturation information on the R (RED) hue,
correcting values of C (CYAN) and Y (YELLOW) of the print data using saturation information on the G (GREEN) hue, and
correcting values of C (CYAN) and M (MAGENTA) of the print data using saturation information on the B (BLUE) hue.

### Claim 12 (depends on 9)

The method as claimed in claim 9, wherein the correcting comprises correcting the print data by reflecting the saturation information and apparatus information of the image forming apparatus.

### Claim 13 (depends on 9)

The method as claimed in claim 9, further comprising:
testing vision of the user and generating vision information of the user,
wherein the correcting comprises correcting at least one of a C (CYAN), a M (MAGENTA), or a Y (YELLOW) value of the print data using the saturation information, and correcting a B (BLACK) value of the print data using the vision information.

### Claim 14 (depends on 8)

The method as claimed in claim 8, further comprising:
receiving an additional correction value on at least one of a C (CYAN), a M (MAGENTA), a Y (YELLOW), or a K (BLACK) value from the user,
wherein the correcting comprises correcting the print data by additionally reflecting the received additional correction value.

### Claim 15

A non-transitory computer readable recording medium including instructions to execute a print controlling method, non-transitory computer readable recording medium comprising:
instructions to test whether a user recognizes a predetermined hue for each of a plurality of saturations;
instructions to generate information on a saturation that allows recognition of the predetermined hue by using a result of the testing;
instructions to correct print data by reflecting the saturation information; and
instructions to transmit the corrected print data to an image forming apparatus.