Image forming apparatus, image forming method, and computer-readable storage medium that change data lengths of first data and second data according to a condition of image formation

1. An image forming apparatus comprising:

circuitry configured to

convert image data into serial data and output the serial data along with first data for detecting unique data in the image data and second data, so that the first data is arranged before the image data and the second data is arranged after the image data,

change data lengths of the first data and the second data, and

convert the image data of the serial data that has been output into parallel data, and output the parallel data, wherein

the circuitry is configured to change the data lengths of the first data and the second data to be arranged before and after the image data according to a condition of image formation, and, depending on the condition of image formation, calculate a maximum data length arrangeable before and after the image data.

2. The image forming apparatus according to claim 1 , wherein the circuitry is configured to compare a transfer time necessary for transfer of one line of image data with a period of the one line, calculate the maximum data length arrangeable before and after the image data, and change the first data and the second data of the maximum data length.

3. The image forming apparatus according to claim 1 , wherein the circuitry is configured to change the first data and the second data of a fixed data length with which a specific noise is cancellable.

4. The image forming apparatus according to claim 1 , further comprising:

a temperature sensor configured to detect a temperature of a predetermined position in the image forming apparatus; and

a humidity sensor configured to detect a humidity of a predetermined position in the image forming apparatus, wherein

the circuitry is configured to change the first data and the second data based on detection information of the temperature sensor and the humidity sensor.

5. The image forming apparatus according to claim 1 , wherein

the image forming apparatus has an image quality selection mode in which resolution priority or gradation property priority is at least selectable, in addition to a normal mode, and

the circuitry is configured to change the first data and the second data based on an image quality mode selected in the image quality selection mode.

6. The image forming apparatus according to claim 1 , wherein

the image forming apparatus has an image forming mode in which a plurality of image forming speeds is selectable,

the circuitry is configured to change the first data and the second data based on a selected image forming speed.

7. The image forming apparatus according to claim 1 , wherein the circuitry is configured to change the first data and the second data when generating a non-image pattern outside an image region.

8. The image forming apparatus according to claim 1 , wherein

the image forming apparatus has a toner save mode in which toner consumption is suppressed, wherein

the circuitry is configured to change the first and the second data in the toner save mode.

9. A non-transitory computer-readable storage medium with an executable program stored thereon and executed by a computer, wherein the program instructs the computer to perform:

converting image data into serial data;

outputting the serial data along with first data for detecting unique data in the image data and second data, so that the first data is arranged before the image data and the second data is arranged after the image data;

changing data lengths of the first data and the second data;

converting the image data of the serial data into parallel data;

outputting the parallel data; and

changing the data lengths of the first data and the second data to be arranged before and after the image data according to a condition of image formation, and, depending on the condition of image formation, calculating a maximum data length arrangeable before and after the image data.

10. The image forming apparatus according to claim 1 , wherein the circuitry is configured to change the first data and the second data of the maximum data length.

11. An image forming method comprising:

converting image data into serial data;

outputting the serial data along with first data for detecting unique data in the image data and second data so that the first data is arranged before the image data and the second data is arranged after the image data;

changing data lengths of the first data and the second data;

converting the image data of the serial data into parallel data;

outputting the parallel data; and

changing, using circuitry, the data lengths of the first data and the second data to be arranged before and after the image data according to a condition of image formation, and depending on the condition of image formation, calculating a maximum data length arrangeable before and after the image data.