Prima cheap printers and scanners with comfortable wireless functions

HP Deskjet 2540:
++ Printing and scanning (!) Also via WLAN Web user interface even from iPad, iPhone or Smartphone
++ Excellent scanner
++ Prints with decent speed in presentable quality text pages and graphics
++ No software installation required With Mac, prints and scans immediately
+ Total after setting up easy to use
+ Color and mono copies the appropriate printer buttons work immediately without any problems
+ Cartridge can be secured with pins against theft
o Weak manual, full version can be found at HP in network
o cost of ink cartridges are still holding in the context
o External power supply
o No Fax function
- Establishment of the wireless functions can be complicated, but only 1x needed
- The two wireless keys react sometimes only after several seconds
- Paper is inserted behind standing at the printer can thereby collect dust
- As a photo printer unusable quality is modest, just printouts with white border

Overall, a powerful multifunction device the Super Cheap class with ingenious wireless functions providing much more expensive devices of older generations in the shadows. While the device via USB for printing and scanning without any problems, integrating into the home wireless has its pitfalls. Because the statements made by the HP-manual help little below a quick guide:

1. The printer can either be in the existing network (wireless) operate or build its own WLAN (wireless direct). These functions are represented by the two buttons 3 and 4 on and off in the instructions, which is signaled by the two corresponding lights

2. To integrate the printer into the home network, the WLAN must be selected and correct password are entered. But the printer has neither a keyboard to enter even a graphic display, thus tricks are needed. Of the three printer has in stock:
a) If the local wireless router modern WPS (WiFi Protected Setup) provides, it is sufficient to hold the button 3 for three seconds. The WPS pin tells the printer as described in c2.
b) for Windows is intended to help a special software from HP that I have not tested. Probably there are also such software for Mac, I did not want to install.
c) for Mac or iPad or tablets there are no tools software, because it also goes without, as described below:
Pull c1) USB cable. Wireless and Wireless Direct must both be active, so turn on with buttons 3 and 4, ignore flashing.
c2) button for 3 and at the same time the key 5 (Copy SW) press. The printer is now several pages with unnecessary data, unfortunately, inevitable, because under the heading "Direct Wireless" password of the printer is hidden, it is behind "passcode". In addition, the "URL for Embedded Web Server" note.
c3) in the system settings of the iPad, etc. Select the Wi-Fi of the HP Deskjet 2540. As a password take the printed passcode. Internet is not so, because it's Wireless Direct, but no matter.
C4), etc. In the browser of the iPad the printed URL typing. Now the printer's web page should appear, which can be configured now comfortable. Ua can switch the language in German, select a shorter name and your own password. Finally, it is possible to select and enter the appropriate password on the tablet's own wireless network.
c5) Once the data of the own WLAN been entered successfully, you should turn off the printer Wireless Direct, because it no longer needs. In addition, the Tablet deselect the printer-Fi and again choose its own network. If desired, the USB cable can now be reconnected.

Now everything should work. The URL can be the embedded Web server on the printer to call, similar to a Fritz box. In this interface you can also scan from the browser and configure everything.