Printing on irregular-sized paper (custom size)

When printing on irregular-sized paper (custom size), set the media size, media type and media weight of the irregular size (custom size) on the operator panel. Next, register the media size in the printer driver.

Setting the media size after loading the paper
  1. Check the paper precautions.

  2. Load the paper with a size that can be set to a custom size into the tray to be used.
  3. Check that "Ready To Print" appears on the display.

    • If the machine is in the power save mode, press «POWER SAVE» to restore.
  4. Press the scroll button ▼ on the operator panel several times to select [Menus], and press «OK».
  5. Check that [Tray Configuration] is selected, and press «OK».
  6. Press ▼ several times to select [Tray Setup] of the tray where the paper is loaded, and press «OK».
  7. Check that [Media Size] is selected, and press «OK».
  8. Press ▼ several times to select [Custom], and press «OK».
  9. Press «BACK».
  10. Press ▼ to select [X Dimension], and press «OK».
  11. Input the X dimension using the numeric keypad, and press «OK».
  12. Press «BACK».
  13. Press ▼ to select [Y Dimension], and press «OK».
  14. Input the Y dimension using the numeric keypad, and press «OK».
  15. Press «ON LINE» to return to the standby screen.


Printing from a PC
For Windows PCL printer driver
  1. Open the "Devices and Printers".

  2. Right-click on the icon [OKI C650 PCL6], and select [Printing preferences].
  3. Click [Paper Feed Options] in the [Setup] tab.
  4. Click [Custom Size].
  5. Input a name for the new size in [Name].
  6. Input values in [Width] and [Length].
  7. Click [Add] to save any media size in the list, and click [OK].
    Up to 32 settings can be saved.
  8. Click [OK] until the [Printing preferences] screen is closed.
  9. Open the file to be printed.
  10. Select [Print] from the [File] menu.
  11. Click [Preferences].
  12. Select the media size registered in [Size] on the [Setup] tab.
  13. Specify the media weight and other settings as necessary, and click [OK].
  14. Click [Print] in the [Print] screen.


For Windows PS printer driver
  1. Open the "Devices and Printers".

  2. Right-click on the icon [OKI C650 PS], and select [Printing preferences].
  3. Click [Advanced] in the [Layout] tab.
  4. Click [Paper Size], and select [PostScript Custom Page Size] from the pull-down menu.
  5. Click [PostScript Custom Page Size Definition].
  6. Input values in [Width] and [Height], and click [OK].

    • [Offset Relative to Paper Feed Direction] cannot be set.
  7. Click [OK] until the [Printing preferences] screen is closed.
  8. Open the file to be printed.
  9. Select [Print] from the [File] menu.
  10. Click [Preferences].
  11. Click [Advanced] in the [Layout] tab.
  12. Select [PostScript Custom Page Size] from [Paper Size].
  13. Click [OK].
  14. Specify the media weight and other settings as necessary, and click [OK].
  15. Click [Print] in the [Print] screen.


For macOS

  • When using macOS, you cannot print properly, although you can set the media size beyond the usable range. Set the media size within the range.
  • macOS may regard the custom-sized paper which is close to a fixed size as the fixed-sized paper.


  1. Open the file to be printed.
  2. Select [Page Setup] from the [File] menu.
  3. Select [Manage Custom Size] from [Paper Size].
  4. Click [+] to add an item to the list of media size.
  5. Double-click on [Untitled], and input a name for the media size.
  6. Input values in [Width] and [Height].
  7. Click [OK] until the [Page Setup] is closed.
  8. Select [Print] from the [File] menu.
  9. Select the media size registered in [Paper Size].
  10. Specify the media weight and other settings as necessary, and click [Print].

    • If there is no detail settings displayed in the [Print] screen, click [Show Details] at the bottom of the screen.