I've got an epson eco-tank E-2750. It can only print decent blacks on paper with optical brighteners and I want to print on archival paper. it basically ends up yellow instead of black, and lighter than the other colours
is there a way that anyone knows that I can force the printer to print better blacks? special profile or something?
Or a method to de-jet-black my blacks to make them at least better? i'm fiddling in photoshop and de-saturating the blacks with levels but i really wish it could print better
https://preview.redd.it/a2wu0vgsa2v51.jpg?width=3000&format=pjpg&auto=webp&s=832ed5d0fc4926a066c3b9750f743876e7527edf
Hi!
This is my part, a DC motor with optical encoder from a printer, I have a project to do and I think this piece would be helpful. I have to keep the speed of a motor constant automatically when it is in mechanical load, and I think it can be done using a motor with encoder.
My question is how do I use this motor with my Arduino board? It has 6 wires, Ithink that 2 of them lead to the motor power supply, but I can`t say anything about the others.
I'm talking about the striped strips you find in inkjet printers for sensing position of the printhead carriage. The printer has a photointerupter sensor to provide quadrature signal.
I like the idea of having powerful DC motor coupled with inexpensive linear encoder and would like to use them in few of my projects.
I thought these would be readily available since this technology is used in every inkjet printer out there, but I was wrong. It seems that the only few strips and quadrature photointerupters to go with them that are available are sold with sole intention of being spare parts for printers and at significant markup.
Does anyone know if the strips and encoders can be bought for cheap somewhere?
Also a side question, are they used anywhere else aside from printers?
Hi, I salvaged an optical encoder from old HP printer. I want to make it work with my arduino, but I had no luck so far. Here is the board: http://i.imgur.com/SW31GDN.jpg
The resistor is 180R, so probably current limiting for the diodes.
I tried hooking up +5V to the red wire, GND to the black wire and then I hooked the blue and green wires to my scope. When I passed the striped belt through the encoder, I got nothing. I also tried adding 5k pullups to the green and blue wires, still nothing.
What did I do wrong?
UPDATE: So I traced the connection back to the main board and I figured out, that in fact the blue wire is GND, not the black one. And when I connect the green wire to +5V, I can see the LED shining red (pretty dimly). But I still cant get any signal at the other two wires, with or without pullups.
So, did I blow it by connecting wrong wires to +5V and GND, or am I still doing something wrong?
Hello,
I scrounged a few [motors] (http://imgur.com/a/d3zWY) from an old Lexmark printer but am having some trouble using the optical tachometers . I'm fairly certain the sensor's circuit is something like the one described here but perhaps with a built in comparator (lm741 perhaps based on the "741" marking on the sensor). My concern is that I can't find any colour standard that corresponds with the green/grey/white leads from the sensor and also I have no information on what voltage to use. Any help is greatly appreciated.
Edit: did a bit of exploratory surgery. [gallery] (http://imgur.com/a/GRcEp)
Edit2: Got it working! Grey +5v, Green GND, White is output (used 20k pullup).
I'm building a robotic arm using 12V DC windscreen wiper motors, and I'm planning on using printer optical encoders to detect the position of the arm. I tried looking for free printers on the side of the road, but I couldn't find enough of them. However I also can't find them anywhere online. I've looked at aliexpress, alibaba, ebay etc but just can't seem to find any. The only thing close is 300 count ones for like $20, which is way over price and under spec for what I need.
Anyone got any ideas where I could find them?
Here is a link
Look at the bottom picture. It has four pins. I assume the one with the red cable will be 3.3v, otherwise I will use 5v. I also assume the bottom pin/cable will be ground (the one that says 4 next to it), since it is connected to two other pins on both rows to the right.
So between pin "1" the 3.3 V, and "4" the ground, there must be channel A and channel B?
Hello,
I'm trying to use the optical encoder from my old Canon MP560 printer in my current project. Problem is, I don't know how to wire it. It's a typical U-shaped black component, 6 pins and has H15 0335 on it ... Signal tracing isn't an option since I was too enthusiastic with the disassembly. Anyone any idea how to find the pin connections?
I have an ASUS vivobook S500C that runs windows 8.1 and an ASUS external optical drive I bought with it. Model number SDRW-08D2S-U if that helps. I also have an older epson printer that I've had for years. Recently they both stopped working. I thought they might have just died from overuse but I recently tried them on my dads laptop which is an HP that runs windows 7, and they work just fine. Any ideas what it might be? I use those USB ports for other things that works fine, and I hear the sounds when I connect and disconnect either optical drive, so I know it has nothing to do with those ports. I tried updating all the drivers I could through windows update, but there were 2 that couldn't be updated. They gave me some error codes that don't really tell me much. And they were for skype and HP anyway. Thanks
For example, in the opening credits of The Shining: https://youtu.be/kiV3J_e977Q l
