Re "it is a very common occurrence in Word 2010." should read
"it is a very common occurrence in Word 2010, in my own personal experience".

So how can there be something "else wrong with your system" if I only have printing problems with Word 2010, when I don't have printing problems with:
-PDF files
-Excel
-TXT files
-Word 2003?

Also what is best/safest way to clear temp folder?
I tried Windows10 / FileExplorer / C: / Disk-Cleanup.
Should I close all apps, and then manually go to temp folder and delete everything (is that safe?)
If it helps, refer below Appendix for dump of my current temp folder, which shows lots of folders.

Any help much appreciated, as I like Word 2010 apart from printing problem.

----
Volume in drive C is ACER
Volume Serial Number is 386E-F4E6

Directory of C:\Users\Sid\AppData\Local\Temp

13-Jan-17 07:44 AM <DIR> .
13-Jan-17 07:44 AM <DIR> ..
13-Jan-17 12:00 AM <DIR> {2212D3CC-32C5-4D49-B88A-2937212AE0F1}
13-Jan-17 12:00 AM <DIR> {516A85A2-FE84-4BEB-908B-DA0E9CCF08E8}
13-Jan-17 12:00 AM <DIR> {B6687B57-C45C-4B05-8B66-64FABBDEB06A}
05-Dec-16 05:33 PM <DIR> {FF0F97AA-AB40-4FD3-AE77-39F81E8961EA}
13-Jan-17 12:00 AM <DIR> 07B2C414-9E4B-4F96-8506-F0F5880B5BA6
13-Jan-17 12:00 AM <DIR> 14972F93-2EAD-456B-9C3D-EDEE0FEE0DD1
13-Jan-17 12:00 AM <DIR> 15FEA2EA-BA0A-481B-96F3-238812F19F5E
13-Jan-17 12:00 AM <DIR> 4E1B8595-34CC-4FCD-89DA-6F759B601E98
13-Jan-17 12:00 AM <DIR> 5167DEDF-060D-4E00-A99C-EA0385B3875E
13-Jan-17 12:00 AM <DIR> 8C6EF91F-A3AD-42E9-AB8E-49196BA3E419
13-Jan-17 12:00 AM <DIR> 9D19F52A-0300-4A5B-AD69-16E2B32C8559
13-Jan-17 12:00 AM <DIR> B440CBE4-B401-467C-A209-EC60009C8FF3
13-Jan-17 12:00 AM <DIR> BAF56DF0-5BB5-428A-B1DA-9665959B04F7
13-Jan-17 12:00 AM <DIR> C60DF6C1-4FE8-408A-9449-C4E6D15DF67B
13-Jan-17 12:00 AM <DIR> C84D0C87-25D3-4914-AA6D-C7F091DF55C6
13-Jan-17 12:00 AM <DIR> EB05BC01-A3D2-4933-8E1D-B606DEE4EB95
25-Nov-16 09:47 PM <DIR> msdtadmin
12-Jan-17 11:45 PM <DIR> msohtmlclip1
01-Dec-16 06:17 PM <DIR> nsd5716704611998
12-Jan-17 06:20 PM <DIR> outlook logging
12-Jan-17 07:35 PM <DIR> SDIAG_3d8a1a8a-fe74-419e-831b-f83bd6b009ac
12-Jan-17 07:25 PM <DIR> SDIAG_a93c51f8-209d-47ea-9ea6-ee8bbdca051f
12-Jan-17 04:35 PM <DIR> Setup000005d0
05-Dec-16 04:18 PM <DIR> TeamViewer
01-Oct-16 01:39 AM <DIR> Trend Micro
09-Jan-17 11:43 AM <DIR> OICE_EEE66078-C1A2-4B63-8FF8-CA6B9D171CFE.0
26-Oct-16 02:21 AM <DIR> CR_B09F9.tmp
12-Jan-17 11:47 PM 4,428 15635000.cvr
08-Jan-17 07:00 PM 0 CVR18BA.tmp.cvr
11-Jan-17 04:53 PM 0 CVR1D29.tmp.cvr
13-Jan-17 12:27 AM 0 CVR2D7E.tmp.cvr
11-Jan-17 06:14 PM 0 CVR4BB3.tmp.cvr
08-Jan-17 03:45 PM 0 CVR4E76.tmp.cvr
11-Jan-17 06:12 PM 0 CVR603F.tmp.cvr
11-Jan-17 05:06 PM 0 CVR613C.tmp.cvr
11-Jan-17 05:16 PM 0 CVR6C7C.tmp.cvr
10-Jan-17 03:53 PM 0 CVR7144.tmp.cvr
09-Jan-17 11:43 AM 0 CVR74D3.tmp.cvr
08-Jan-17 07:22 AM 0 CVR7E08.tmp.cvr
12-Jan-17 06:32 PM 0 CVR874F.tmp.cvr
12-Jan-17 07:35 PM 0 CVR9018.tmp.cvr
11-Jan-17 05:26 PM 0 CVR97D5.tmp.cvr
06-Jan-17 09:08 PM 0 CVRA4B3.tmp.cvr
12-Jan-17 06:20 PM 0 CVRAB67.tmp.cvr
11-Jan-17 06:27 PM 0 CVRAD03.tmp.cvr
11-Jan-17 04:31 PM 0 CVRB6A0.tmp.cvr
09-Jan-17 04:58 PM 0 CVRC4A0.tmp.cvr
11-Jan-17 05:02 PM 0 CVRC960.tmp.cvr
11-Jan-17 05:49 PM 0 CVRCCE9.tmp.cvr
11-Jan-17 05:44 PM 0 CVRDDF9.tmp.cvr
12-Jan-17 02:24 PM 0 CVRDF31.tmp.cvr
11-Jan-17 05:18 PM 0 CVRE4F3.tmp.cvr
12-Jan-17 03:04 PM 0 CVRE64.tmp.cvr
09-Jan-17 10:49 PM 0 CVRE722.tmp.cvr
11-Jan-17 05:56 PM 0 CVREBFD.tmp.cvr
12-Jan-17 12:45 PM 0 CVREC07.tmp.cvr
11-Jan-17 05:20 PM 0 CVRF573.tmp.cvr
11-Jan-17 10:22 AM 624 sa.1A7994D6-5342-8581-71FB-A2BD1C895D93_5__.Public.AppUpdate.dat
01-Apr-15 03:30 PM 9,216 asc10_startupBlack.db
20-Dec-16 02:03 PM 27,648 asc10_startupWhite.db
01-Apr-15 03:30 PM 9,216 sm10_startupBlack.db
20-Dec-16 02:03 PM 27,648 sm10_startupWhite.db
12-Jan-17 07:24 PM 131,072 6A883A09-B28F-4D85-BEFA-AFA3D1C8C617.Diagnose.0.etl
12-Jan-17 07:35 PM 131,072 FB47EC84-9F55-4EAE-8DE9-A9027D349CAC.Diagnose.0.etl
08-Jan-17 05:30 PM 0 CProgram FilesOpera42.0.2393.94opera_autoupdate.download.lo ck
08-Jan-17 05:30 PM 0 CProgram FilesOpera42.0.2393.94opera_autoupdate.metrics.loc k
13-Jan-17 06:10 AM 2,751 AdobeARM.log
12-Jan-17 03:12 AM 1,535 AdobeARM_NotLocked.log
13-Jan-17 03:48 AM 4,713 jusched.log
08-Jan-17 05:30 PM 0 opera_crashreporter.log
12-Jan-17 05:30 PM 99,569 SetupExe(201701121635155D0).log
12-Jan-17 06:05 PM 115,443 SetupExe(201701121741531C98).log
08-Jan-17 11:44 AM 0 #A#3lefzGidYpi,b.tmp
13-Jan-17 12:47 AM 512 ~DF36BE7F082B8DFC0D.TMP
13-Jan-17 12:27 AM 512 ~DF7E43A4A20D70C67A.TMP
12-Jan-17 03:04 PM 0 DMI5564.tmp
08-Jan-17 02:12 PM 0 DMI5D87.tmp
12-Jan-17 07:32 PM 0 DMI9AE4.tmp
08-Jan-17 09:33 AM 0 DMIA275.tmp
12-Jan-17 05:37 PM 0 DMIECD7.tmp
12-Jan-17 05:00 PM 877,368 Hx9D66.tmp
16-Mar-16 08:25 AM 383 wctE7AB.tmp
13-Jan-17 07:44 AM 0 dump.txt
56 File(s) 1,443,710 bytes
29 Dir(s) 153,254,006,784 bytes free