What is Printing: Definition and 120 Discussions

Printing is a process for mass reproducing text and images using a master form or template. The earliest non-paper products involving printing include cylinder seals and objects such as the Cyrus Cylinder and the Cylinders of Nabonidus. The earliest known form of printing as applied to paper was woodblock printing, which appeared in China before 220 AD for cloth printing. However, it would not be applied to paper until the seventh century. Later developments in printing technology include the movable type invented by Bi Sheng around 1040 AD and the printing press invented by Johannes Gutenberg in the 15th century. The technology of printing played a key role in the development of the Renaissance and the Scientific Revolution and laid the material basis for the modern knowledge-based economy and the spread of learning to the masses.

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  1. shivajikobardan

    MHB Why do we use CMYK color for printing?

    I will tell my research that i have done earlier here. CMYK is used for print pieces like brochurers and business cards. For RGB we need to start on black paper but we can't add light until we reach white because light can't be painted on surface, what does this bold content means to say? in a...
  2. shivajikobardan

    Comp Sci Why do we use CMYK color for printing?

    I will tell my research that i have done earlier here. CMYK is used for print pieces like brochurers and business cards. For RGB we need to start on black paper but we can't add light until we reach white because light can't be painted on surface, what does this bold content means to say? in a...
  3. adambenson9771

    Thermal Printing and Ink fading

    Hello, I am not sure if this is the right place but I would appreciate some help. Basically I have been trying to accelerate the fading of the ink on thermally printer paper. “Receipts are typically printed on thermal paper, a chemically coated paper that produces text and image when the...
  4. B

    I Surfaces wrapped around a cylinder for 3d printing

    Hi All, I am looking to determine how these Vases where modeled using maths on this webpage https://www.3dforprint.com/3dmodel/sine-wave-vase-generator/2116. It looks like the surface is parametrically defined and wrapped around a cylinder. Interestingly he mentions "Sine waves combine to...
  5. Ghost Quartz

    Java Why is the do-while loop in my Java code printing '9'?

    int bd= 15; int ad= 5; while(ad!=9){ System.out.println(bd); ad++; bd++; }//output 15,16,17,18 do { System.out.println(ad); ad++; }while(ad<=9);//output 5,6,7,8 thanks for the help
  6. kolleamm

    3d printing materials with different melting points?

    A 3d printer that could print metal and other materials would revolutionize everything. The only problem is that metals have a really high melting point, so if you try to get a metal hot enough to bind to the other metals in its vicinity it would probably destroy the bonds of the neighboring...
  7. Arman777

    Python How to Adjust Printing in Sympy for Jupyter-Lab?

    I have a code that is something like this print("Gamma^",syms[i],"_",syms[j],syms[k], "=", syms[1], syms[2]**2) When I print in jupyter-lab it looks like this Gamma^ r _ theta theta = r theta**2 Gamma^ r _ phi phi = r theta**2 Gamma^ theta _ r theta = r theta**2 Gamma^ theta _ theta r = r...
  8. T

    What machines are used to manufacture extruder screws for 3D printers?

    Currently I am working on an assignment about making an extruder screw for screw based 3D printer. I am confused that actually what kind of machines those manufactures out there using to manufacture this kind of extruder screws ?
  9. Arman777

    Adjusting the printing format for the given variables in R

    I have data like -418 -26066 -539 -33810 -763 -47745 207 12395 -701 14732 473 -8748 862 -19061 744 -16347 680 59377 -637 -53885 -720 35840 -486 23906 -147 3505 762 -20129 677 -53800 849 -67388 -690 42730 995 -63425 203 -4108 620 -11614 93 -6381 26 -1423...
  10. J

    Health risks of ABS FDM (3d printing)

    This is not the first study I've seen discussing potential risks of FDM airborne byproducts. It's the reason I bought a fully enclosed unit. However, it's in my home which at the moment is extremely small. It's less than a meter away from both my workbench and my sleeping area. While the unit is...
  11. F

    3D printing and G-code files....

    Hello, I am aware that the workflow of 3D printing involves the following steps: 1) Design the part using CAD and saving it as a .stl file. 2) Import the stl file into a slicing software to be converted to a G-code file 3) Load and run the G-code file on the 3D printer It is simple and safe to...
  12. F

    3D Printing and "Watertight" Digital Models

    Hello, I understand that CAD models (stl files) suitable for 3D printing must be "watertight" and not leaky in the polygon mesh. By analogy, if we filled the model with water, the water would not leak...This concept of watertightness means that there are no unintentional holes between the...
  13. berkeman

    Help printing to a Zebra label printer from Tcl or C please

    I'm able to send these ZPL files to my 600dpi industrial Zebra printer using their Zebra Setup Utilities program, but I'm not understanding yet how to send the files to the label printer from my Tcl/Tk Mfg test program. With Google searches, I've found the ezprint option...
  14. F

    Tinkercard Digital object and 3D printing

    Hello, When creating a curved object in Tinkercad, something like a sphere, the spheres' surface does not look very smooth but rather meshy under close inspection. Will the 3D printed version of that sphere designed in Tinkercad have a smoother surface than the meshy surface it has in the...
  15. F

    3D printing software modeling and slicing

    Hello, The first step in 3D printing is the generation of a 3D model using a CAD software. But to be able to print the object, the CAD software is not enough, even if the file is saved in .stl or .obj format, correct? Another software, called the slicer, must then receive the 3D modeling file...
  16. K

    MCNP6 is not printing an MCTAL file

    I am having an issue with MCNP6. When I run a simulation an output file is created, but not a mctal file. This behavior started after getting the following error forrtl: severe <157> : program exception -access violation I restarted and didn't get the error, but now not the mctal file and I...
  17. S

    Python: printing every other input using a for loop

    I want my output to read only the integers. Here's my attempt: number = int(input()) for i in range(2, number+1, 2): print(input())
  18. J

    The physics behind 3D printing

    Hi, so earlier this week I was given a physics research project for over the summer- I naturally thought to do 3D printing as I have a printer at home. Basically, I’ve got the general idea nailed and I’ve done a fair amount of writing for this, but I need specific physics concepts/ideas or at...
  19. G

    Printing from an iPad Air to Dell laser 1320c

    I may be known on the EE side of PF as someone who hates waste and doesn’t like to throw away perfectly good machines; I like to resurrect faulty gear. This Dell printer was thrown away for want of a touch or two of solder, and works just fine. Do I really need to buy a whole new printer? This...
  20. nomadreid

    Units of capacity for the manufacture of flexo printing plates

    I am not sure that this is the right place to post this question, so I will be happy to let any moderator move it. (I would be less happy to find out that the question has no place in PF, but I would accept it.) I have been asked to make a list of American manufacturers of plates for...
  21. A

    What do surface tension vectors mean in this quote?

    I was reading Fundamentals of Inket Printing and it said the following: "The surface tension in a liquid causes a force to act in the plane of the free surface perpendicularly to a free edge in that surface." Can someone explain to me what this means? What's the direction of the force? I have...
  22. BillTre

    Moonscape Files for 3D printing

    Several interesting moonscape files can be downloaded from here for 3D printing.
  23. BillTre

    3D Printing Small Optical Structures

    Specialized 3D printers can now produce small optical elements: Described here. There is also a company that makes light shaping diffusers (for lamps) that control the light by controlling the interference patterns of the light due to microscopic structures on the surface of the diffuser film...
  24. wirefree

    I Euler, De Moivre and a printing error

    to all members of the forum. In the attached image is equation numbered 3.23 which, by the application of Euler’s Identity - called De Moivre Theorem one line below - leads to equation 3.24. Above is an a textbook frought with errors - printing ones. I would be highly appreciative of a...
  25. Paddyster

    How to avoid aliasing problems on a 600x600 DPI printer?

    Hi, Wasn't sure where to post this so thought I would post it in general. How do I avoid aliasing problems on a 600x600 DPI printer? Kind regards.
  26. M

    LaTeX Printing Code from Python in Latex via "minted"

    Hi PF! I am trying to import code written in Python into Latex via the "minted" package. However, I am getting the error: Package minted error: you must invoke latex with the -shell-escape flag. I tried googling help but I can't figure it out. I'm using Python 2.7 on mac OSX sierra. Any help...
  27. berkeman

    Find 3D Printer & Software Resources for Prototype Creation

    I'd like to create a thread with links to 3-D Printer resources, including printers and software package suggestions. My motivations are selfish, as I have a 3-D printed project that I'm working on, and I'd like to buy a simple printer and use low cost software to make the first prototype...
  28. C

    Optical Tweezers and 3D Printing

    I am trying to assemble an optical tweezers setup and was thinking if it is realistic to assemble an optical tweezers setup using 3D printed parts? Also can DMD (Digital Micromirror Device) be used instead of SLM to manipulate the beam and generate multiple traps?
  29. BillTre

    3D Printing of Structural Colors

    Browns, Reds, and Blues have been 3D printed (video here) by making very tiny shapes similar to those that underlie the iridescence phenomena. This kind of coloration is in some ways similar to the another favorite of mine (which I would call a structural non-color): Vantablack (Vertically...
  30. DaveC426913

    Getting and using 3D printing software

    I have a design I want to 3D print. It's tiny, less than 1 inch, and has more than one fitted, moveable part. I'd like to figure out if it's feasible before I decide whether I buy in. I don't know what software is used to make the designs. (A friend told me his printer supports .stl files) I...
  31. BillTre

    How Can 3D Printing Revolutionize Manufacturing Costs?

    This little article discusses a variety of savings GE got from using 3D printing in making a new turboprop engine. They included fewer parts (855 --> 12), subsystems (40 --> 1), and suppliers (50 --> 1).
  32. M

    Array is printing out weird symbols

    Homework Statement Compare two strings which represent test scores for a 20 question exam. If the student scores 15 or higher, they pass. Less than that they fail. Indicate whether a student passes or fails. Display how many answers they got right and wrong. Display which number they got wrong...
  33. F

    3D Printing a transparent plastic object....

    Hello Forum, I am new to 3D printing and wondering if any of you have been able to print transparent plastic object with 3D printing. It seems that translucency is the best that we can get. Is that true? Are today's affordable 3D printer still only work with PLA and ABS or are there other more...
  34. Ryan Walsh

    What is the Lightest and Strongest 3D printing material?

    Looking for Something durable yet Very Light 3D printing material. I googled and Found A product. http://www.mes3dfilaments.co.uk/product/form-futura-carbonfil Carbon Fiber PLA.. Any other suggestions? For application for small wind turbine propellers
  35. B

    B Is this a printing error? (book example problem -- radius of a molecule)

    Question :- The critical volume of a gas is 0.072 L mol-1. What will be the radius of the molecule in cm ? Answer in the book :- ##V_c = 3b \implies b = 0.024 L mol## ##\therefore## for every molecule ##b = {24 \text{cm}^3\over 6 \times 10^{23}} = 4 \times 10^{-23}\text{cm}^3## per...
  36. O

    MHB Reading and printing a string in Java - Assigning values

    A user types a word and a number on a single line. Read them into the provided variables. Then print: word_number. End with newline. Example output if user entered: Amy 5 Result should read as: Amy_5 import java.util.Scanner; public class SpaceReplace { public static void main (String []...
  37. S

    MHB Java- Printing an Original Array while Performing Operations on an Array Copy

    Hello mathhelpboards community! Please help! Thank you. :-) I need my code to print out the user's original array that is to say the numbers in the way the user entered them. I tried making a copy of the original array and then did all of the arithmetic on it. I sorted the array copy in...
  38. M

    Solve C Program Not Printing Homework

    Homework Statement one teacher wants to know the % of fail and aproved of the class of "N" number of students, the minimun qualification to aprove is "7", write a program that reads the students qualifications, and then the program says the number of aproved and failed students and the % of...
  39. G

    C: Printing unsigned char data type

    Homework Statement Given a matrix n x m with unsigned char data type entries (entries are of size 1 byte, so data type of an entry should be unsigned or signed char, not int or char *). Entries are read in hexadecimal format (0x00,0x11,0xFF,...). Matrix should be allocated dynamically. Print...
  40. O

    MHB Trouble Printing Out Array Elements with a For Loop

    I am having problems with printing out each elements of the array using a for loop It's suppose to look like this: Enter non-negative numbers (ints) terminated by -99 1 2 3 4 5 6 -99 Original list (6 values): 1, 2, 3, 4, 5, 6. the code's output looks like: Enter non-negative numbers (ints)...
  41. smodak

    Intro Physics Printing Quality of Feynman Lectures Millennium Edition

    I know that the Millennium Edition of FLP is supposed to be the most up-to-date and corrected, however, I have read (in amazon) really less than ideal reviews on how glossy the pages are, how light the printed text are, and how the texts go inside the left margin making it very difficult to...
  42. N

    C/C++ C++: Printing output based on variable value

    Print either "Fruit", "Drink", or "Unknown" (followed by a newline) depending on the value of userItem. Print "Unknown" (followed by a newline) if the value of userItem does not match any of the defined options. For example, if userItem is GR_APPLES, output should be: Fruit #include <iostream>...
  43. F

    3d printing neuron with membrane potential

    Is it possible to 3d print a neuronal structure with a different material than neurons that would work just like a neuron with membrane potential?
  44. P

    How can SLA printing produce colored resin?

    how do they make the resin different colours ? Is it a dye?
  45. B

    I Don't Understand Why Printing Money = Inflation

    First and foremost, I apologize if this question is posted in the wrong section. I wasn't sure where to place it and figured it was at least tangentially related to math (and that the mods/admin would re-route my thread topic to a new location if appropriate :-p). On to my question...
  46. R

    C/C++ Printing Integer Digits as Words in C++

    Write a “C++” program to read any integer number and print each digit into word. I went like this # include <iostream.h> #include <conio.h> void main(){ int a,b,c,d; clrscr(); b=a cout<<"Enter any number"<<endl; cin>>a; c=a%10; d=a/10; I am not getting further logic. someone was saying for loop...
  47. G

    C: Printing specific elements of a structure

    Homework Statement I have the following code which manipulates with basics of structures. There are function like reading and sorting data from structures. Now, I don't know how to write a function that reads name and surname of an author of a book, and then prints data about books that are...
  48. davgonz90

    Question About 3D Printing and Cancerous Liver

    With all the hype of 3D printed organs lately, I've wondered: let's say that someone with terminal cancer in the liver undergoes a liver transplant with a completely new 3D printed organ. Assuming that this was the only organ affected, would this rid them of the cancer? If so, why? And if not...
  49. P

    Printing 1 Million Digits of Pi: 1 Mile of Paper!

    One million digits of pi, printed out on a mile long piece of paper. What do you think?
  50. I

    C/C++ Printing Elements of a Vector Forwards and Backwards

    Write a for loop to print all NUM_VALS elements of vector courseGrades, following each with a space (including the last). Print forwards, then backwards. End with newline. Ex: If courseGrades = {7, 9, 11, 10}, print: 7 9 11 10 10 11 9 7 Hint: Use two for loops. Second loop starts with i =...
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