Javascript to print print date and time on scanned documents

Question

I'm using the following code to print a message, time/date stamp, and expiry date along the right hand side of printed documents. It works fine on word docs that were printed to pdf, but when a document it scanned, it mysteriously prints the the correct line of text, but also prints an additional, identical line perpendicular to the original line.
Any help would be most appreciated!
// Add field to each page of form
var inch = 72;
for (var p = 0; p < this.numPages ; p++) {
// create rectangle quads for field
var aRect = this.getPageBox( {nPage: p} );
aRect[0] = 540.0;
aRect[1] = 0.0;
aRect[2] = 576.0;
aRect[3] = 792;
var f = this.addField("PrintField" + p, "text", p, aRect)
f.delay = false;
f.print = true;
f.hidden = true;
f.delay = false;
f.rotation = 90;
f.textSize = 10;
f.textFont = font.HelvB;
f.textColor = color.red;
f.alignment = "center";
f.readonly = true;
f.value = "";
var myWillPrintScript =
'for (var p = 0; p < this.numPages ; p++) { ' +
'var f = this.getField("PrintField" + p); '
+ 'f.hidden = false; '
+ 'var d = new Date(); '
+ 'var expiryd = new Date(); '
+ 'var ThursdayArray = new Array(7); '
+ 'ThursdayArray[0] = 4; '
+ 'ThursdayArray[1] = 3; '
+ 'ThursdayArray[2] = 2; '
+ 'ThursdayArray[3] = 1; '
+ 'ThursdayArray[4] = 0; '
+ 'ThursdayArray[5] = 6; '
+ 'ThursdayArray[6] = 5; '
+ 'var currentday = 0;'
+ 'currentday = d.getDay(); '
+ 'expiryd.setDate(expiryd.getDate() + ThursdayArray[currentday]);'
+ 'f.value = "This is an unofficial copy of a controlled document. Print date/time: " + util.printd("dd mmm yyyy HH:MM ", d) + " Expires: "+ util.printd("dd mmm yyyy ", expiryd) + " 23:59 EST.";'
+ '}'
var myDidPrintScript =
'this.resetForm();'
+ 'this.dirty = false;'
// Now set the scripts to execute on the Will/Did Print events.
this.setAction("WillPrint", myWillPrintScript);
this.setAction("DidPrint", myDidPrintScript);

Answer 1

Very unusual, Here are some more questions to help nail down the issue.
Are both date text lines in form fields? What are the form field names? i.e. is this an exact copy of the existing form field? What are the settings that differentiate the two fields, i.e. Rotation, etc.?
Could the script be somehow getting run twice?
On another note, why are you naming all of the fields differently. It looks like they all get the same info. If this is true then you could simplify the script by making them all the same name. You would not need the loop to apply the date text.
Thom Parker
The source for PDF Scripting Info
www.pdfScripting.com
The Acrobat JavaScript Reference, Use it Early and Often
http://www.adobe.com/devnet/acrobat/