I have documents in my computer, I need to print them with larger print. Please tell me how?

Your computer software (ie, Windows) will determine the print size, not the printer. The printer just takes the image from the computer and prints it. As example, you can increase the text font size of your document to make the text larger on your printer.

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To make your printer to print larger characters, you should elaborate your document on your computer using a lager font size.
Specify what application are you using and may help you select a lager character size

You need to make the printer larger IN THE DOCUMENT before you send it to the printer.

That process will vary, depending on the type of document you are printing.

What font are you referring to? Have you prepared a document in a word processing program, or added text to an image file, and are disappointed because you want to see the text printed larger? If so, your best solution is to edit the document or image and change to a larger text size. For example, most text documents will normally default to either a size 10 or 11 text which is readable but small. Changing to size 12 or 14 will make the text look larger onscreen, and the text will also print larger. The font name and font size should be displayed on one of your processing program's toolbars, and is easily changed to a different font name or size. If you are simply copying an already printed document and want the text to appear larger, you should refer to your printer's User Guide. If you don't have the User Guide, you can download a free copy at this link:
HP PSC 1510 All in One Printer User guides

You'll need to make the print larger in your document, Alvin - on the computer, not at the printer.

Assuming you're referring to the print size of the fonts - letters ..... or the size of the printed page ...
If you're printing from your computer, you'll need to change the size of the font (to a larger font size) on your document before you print, or adjust the print Properties ... to fit to page, or magnify the size of a small document ...
If you're printing a pdf file, you can specify the size of the document using the enlarge (%) before you send it to the printer

Hello.

If the problem occurs from one computer only, remove printer from Printers and Faxes and renistall the driver.

If needed, here's the link for the driver:

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&swItem=pl-89035-1&jumpid=reg_R1002_USEN

If the problem occurs from more than one computer, please let me know.

Hope this helps.

To print a document with a larger font. For example, if it is a Word document open the document and click on Format - Font then change the font size to a larger size. Then Save the document and then print your document.

To print a larger font size, you need to change the size of the text in the document.
For example if this document is a WORD document then when the document is opened in WORD you select your text and then click on the Font size and change it to a larger size.
If it is a new word document, you can set the font size before you start typing.
Don't forget to save the changes in your document.

You need to change the size of the text on your computer in order for it to print in larger text. You didn't say what you are using to print text so it's kind of hard to tell you exactly what to do. If you are using Microsoft Word or almost any word processor, you will need to change your font size to something bigger. If you are changing something that you've already typed, you can highlight or select what you have typed and change it's font size. Hopefully this is enough to help you. If you need further help, please let us know what software you are using to create your documents. Good luck!