Printing on long paper
To print on long paper, change the setting of media type, and use the multi-purpose tray (MP tray) and the rear output tray.
First, set the media size for the MP tray on the operator panel. Next, register the media size and media weight in the printer driver.
The media size that can be registered ranges from 55 mm to 216 mm in width and from 91 mm to 1,321 mm in length.
Loading paper
Check the paper precautions.
- Load the paper in the MP tray.
- Open the rear output tray on the back.
Check that "Ready To Print" appears on the display.

- If the machine is in the power save mode, press «POWER SAVE» to restore.
- Press «Fn» on the operator panel.
- When the numerical input screen is displayed, press «9», «0» and «OK».
- Press the scroll button ▼ several times to select [Custom], and press «OK».
- Press «BACK».
- Press ▼ to select [X Dimension], and press «OK».
- Input the X dimension using the numeric keypad, and press «OK».
- Press «BACK».
- Press ▼ to select [Y Dimension], and press «OK».
- Input the Y dimension using the numeric keypad, and press «OK».
- Press «ONLINE» to return to the standby screen.
Printing from a PC
For the Windows PCL printer driver
- Open the file to be printed.
- Select [Print] from the [File] menu.
- Click [More settings].
Select [User Defined Size] from [Size] in the [Setup] tab, and click [OK].

- If the size of the loaded paper is 210.0 x 900.0 mm, 215.0 x 900.0 mm, or 215.0 x 1200.0 mm, you can select the paper size from [*Banner *** x *** mm].
For how to set the irregular size, please refer to "Printing on irregular paper (Custom)".
- If the size of the loaded paper is 210.0 x 900.0 mm, 215.0 x 900.0 mm, or 215.0 x 1200.0 mm, you can select the paper size from [*Banner *** x *** mm].
- Select [Multi Purpose Tray] in [Source].
- Specify the media weight and other settings as necessary, and click [OK].
- Click [Print] in the [Print] screen.
For the Windows PS printer driver
Open [Devices and Printers].
- Right-click on the icon [OKI C651 PS], and select [Printing Preferences].
- Click [Advanced] in the [Layout] tab.
- Click [Paper Size], select [PostScript Custom Page Size] from the pull-down menu, and input values in [Width] and [Height].
- Click [OK] until the [Printing Preferences] screen is closed.
- Open the file to be printed.
- Select [Print] from the [File] menu.
- Click [Advanced].
- Click [Advanced] in the [Layout] tab, and select [PostScript Custom Page Size] from [Paper Size], and then click [OK].
- Click [OK].
- Select [Multi Purpose Tray] from [Paper Source] in the [Paper/Quality] tab.
- Specify the media weight and other settings as necessary, and click [OK].
- Click [Print] in the [Print] screen.
For macOS
- Open the file to be printed.
- Select [Print] from the [File] menu.
- Select [Manage Custom Sizes] in [Paper Size].
- Click [+] to add an item to the list of paper size.
- Double-click on [Untitled], and input a name for the long paper size.
- Input values in [Width] and [Height].
- Click [OK].
- Select a paper size registered in [Paper Size].
- Select [Multi-Purpose Tray] from [Printer Options] - [Paper Feed] - [All Pages From].
- Specify the media weight and other settings as necessary, and click [Print].
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- If there is no detail settings displayed in the [Print] screen, click [Show Details] at the bottom of the screen.
