Steven Suffoletto
Steven Suffoletto
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  • 281 896
Visual Color Assessment
Discusses the basic workflow to visually assess color, classify accuracy of match (Same, Close, Different), and describe verbally how the color is different (Lighter-Darker, Cleaner-Dirtier, Colder-Warmer). Also, how Pass/Fail tolerance limits should be determined.
(C) 2022 Suffoletto
Time Topic
0:38 Advantages
2:03 Disadvantages
2:47 Light & View Conditions
3:39 Paired Comparison
5:02 Color Communication
5:38 Degree of Color Match (Accuracy)
7:19 How is it Different (Adjectives)
8:55 Light-Darker (L*)
10:06 Clean-Dirty (C*)
11:33 Cold-Warm (h')
13:14 Color by Numbers
14:09 Correlation Metrics
14:48 Spot Color Delta E
16:35 Tolerance Limits
17:22 "Should" pronunciation :-)
18:01 Closing
19:09 Thank You (End)
Переглядів: 598

Відео

Inks x Filters = Density
Переглядів 4082 роки тому
Discusses how density of an ink is determined by the complementary or opposite filter color. Status T densitometry uses Kodak Wratten filters #25 Red for Cyan, #58 Green for Magenta, and #47 Blue for Yellow. Density is Darkness, NOT Color! D = -log R 0:48 Wavelengths nanometers 1:52 Inks 2:54 Filters 4:12 Status T & E 4:50 Neutral Density (ND) 6:55 Ink Film Thickness (IFT) 7:47 End
Press Speed Conversions
Переглядів 1942 роки тому
Explains how to convert printing press speed units from any this unit to any that unit. Sheetfed is slower and web (roll) is faster.
Basics of Halftone Screening
Переглядів 8 тис.3 роки тому
Brief and basic discussion about 4 characteristics of Halftone screening, Size (H,M,S), Shape (Square, Round, Elliptical), Spacing (lpi ruling), and Slope (angle). Also, AM, FM, XM, and Tone Reproduction Curves (TRC), Dot Gain curves (TVI), moire and rosette patterns. Copyrighted (c) 2021 to protect Intellectual Property (IP).
Inks
Переглядів 2,5 тис.3 роки тому
Discussion about printing inks functionality (transfer, dry, adhere), formula, ingredients (pigment, vehicle), physical (tack, IFT) and optical (color, transparency, gloss) properties.
Rollers_Meter & Distribute
Переглядів 1,6 тис.3 роки тому
Discussion about rollers metering and distributing ink in lithography. Metering is local by blade keys and global by ball/ductor sweep or stroke. Discuss motion of ductor and vibrator/oscillator roller, and diameter size of ink forms.
Test Questions
Переглядів 7693 роки тому
A review of the correct answers to 90 questions from 9 quizzes for Litho Press 1 from Fall of 2020. Reference is a Ryobi 2800 sheetfed offset lithographic printing press. Some question are specific to a particular laboratory project. Quiz/Time: 1_0:30, 2_4:35, 3_9:50, 4_14:15, 5_19:55, 6_24:45, 7_29:36, 8_37:42, 9_42:44.
Rods & Cones
Переглядів 3463 роки тому
Discussion about how the iris and pupil of the eye act like the f/stop # aperture of a camera lens and how the photoreceptors inside the human eye are similar to film. Discuss Photopic & Scotopic as well as peripheral vision. Discuss Photometry Brightness with CIE L* and how Munsell Value is a uniform color scale or space.
Trap = Prepress & Press
Переглядів 5533 роки тому
Brief, basic discussion about Trap in both prepress (horizontal image overlap) and press (vertical ink stacking) context. For press, also wet and dry trapping.
Ink Color = Process & Spot
Переглядів 3783 роки тому
Brief, simple discussion about different types of ink colors, Process & Spot.
Image = Solid & Screen
Переглядів 2263 роки тому
Brief, basic discussion about 2 different types of Images, Solids & Screens.
Register Adjustments = 3 Directions
Переглядів 2813 роки тому
Discuss the 3 directions of a register adjustment, horizontal (side-side), vertical (up-down), and diagonal (slanted).
Register = External & Internal
Переглядів 1553 роки тому
Discuss External register (Position, sheet to press) and Internal register (Fit, color to color).
Tonal Metrics - Table
Переглядів 2213 роки тому
This supplements a previously posted video titled "Physics of Light." We fill out a Tonal Metric table that lists %R, %A, Density, % Dot Area, Pixel Value and L* for white, gray, and black. D=-logR and R=10^-D.
Physics of Light
Переглядів 2893 роки тому
Discusses mostly the physical aspects of light (Source) and its' interaction with matter (Object), to prepare us for a later discussion about the human sensation (Observer) of color. See a separate UA-cam video for detail conversation about converting light reflectance into optical density.
Convert % Reflection into Density_Table & Log Curve
Переглядів 1793 роки тому
Convert % Reflection into Density_Table & Log Curve
Comparison of Traditional vs Digital Printing
Переглядів 1,6 тис.3 роки тому
Comparison of Traditional vs Digital Printing
Paper Cutting - Yield & Grain
Переглядів 5683 роки тому
Paper Cutting - Yield & Grain
Xerography 6 Steps
Переглядів 3,5 тис.3 роки тому
Xerography 6 Steps
Measurements_Metric Units
Переглядів 1363 роки тому
Measurements_Metric Units
Ryobi 3302 M
Переглядів 9 тис.3 роки тому
Ryobi 3302 M
Trigonometry for Printing
Переглядів 2353 роки тому
Trigonometry for Printing
Register Consistency Test - Results with Photos
Переглядів 1573 роки тому
Register Consistency Test - Results with Photos
Printing Processes Technology
Переглядів 22 тис.3 роки тому
Printing Processes Technology
Print Production Workflow_3 P's
Переглядів 1,3 тис.3 роки тому
Print Production Workflow_3 P's
Printing Press_6 Major Systems
Переглядів 8 тис.3 роки тому
Printing Press_6 Major Systems
The Printing Industry_Introduction
Переглядів 2263 роки тому
The Printing Industry_Introduction
Gate Folds_Open-Closed
Переглядів 723 роки тому
Gate Folds_Open-Closed
Baum Paper Folder
Переглядів 1754 роки тому
Baum Paper Folder
Hair Color GCR 3of3
Переглядів 2454 роки тому
Hair Color GCR 3of3

КОМЕНТАРІ

  • @paulafigueroa1354
    @paulafigueroa1354 28 днів тому

    Thank you! from Guatemala

  • @MuriloAIto
    @MuriloAIto 4 місяці тому

    Profound content! Thank you!

  • @davewickizer4506
    @davewickizer4506 4 місяці тому

    We had one in oir shop and it was great for small jobs. Always wondered if it was still going somewhere. It saved me on a big account when i was tied up on the 36" and needed some small help. Easy to run once you get on to it

  • @chrislemery8178
    @chrislemery8178 5 місяців тому

    Great video! I'm having an interview for a flexo position in 2 hours. I've been a newspaper printer for over 20 years and would really like to get into this type of printing instead.

  • @tads5935
    @tads5935 6 місяців тому

    How do I get parts

  • @iloveindia2366
    @iloveindia2366 6 місяців тому

    I want job sir Iam ryobi machine operator

  • @aseel7845
    @aseel7845 7 місяців тому

    thank you SO much

  • @SachinPatil-yz1qm
    @SachinPatil-yz1qm 7 місяців тому

  • @robertwyeth7748
    @robertwyeth7748 7 місяців тому

    Thank you for your Ryobi videos. Is your program still offered?

  • @godfreyadede1975
    @godfreyadede1975 7 місяців тому

    i have been in printing industry for the last 14 years, especially in Offset Lithography but today as i followed this video i have been refreshed and now am geared towards FLEXOGRAPHY ..........bravooooo

  • @33Trillion
    @33Trillion 8 місяців тому

    Please if I want to expose plate with sun how many minutes should it be please I need info on that

  • @charlietrinidad5122
    @charlietrinidad5122 8 місяців тому

    I'm about to start my first job in flexo printing, I've been studying and watching many videos but this is the best!! Very educational and informational, thank you very much sir.

  • @cyber-kkenya392
    @cyber-kkenya392 9 місяців тому

    Thank you for this video

  • @jillkristich3146
    @jillkristich3146 9 місяців тому

    thank you

  • @mrazadkhan9602
    @mrazadkhan9602 9 місяців тому

    Thanks you very much Dear

  • @mrazadkhan9602
    @mrazadkhan9602 9 місяців тому

    Thanks you very much Dear

  • @rataviciosa5198
    @rataviciosa5198 10 місяців тому

    Can you make something similar but with the different cardboard sheets? It's the same.math?😮

  • @hassinagoudjil8121
    @hassinagoudjil8121 11 місяців тому

    Hello sir, how can I contact you please? I need to order some

  • @dorismartinez5713
    @dorismartinez5713 11 місяців тому

    American Fuji Seal also offers Flexo-printing! Really good quality…nice facility in North Carolina.

  • @harrislopes5208
    @harrislopes5208 11 місяців тому

    It would be helpful if you give in range in which it should be

  • @stever4181
    @stever4181 Рік тому

    I use to love mixing ink.

  • @stever4181
    @stever4181 Рік тому

    Where the sheet separators are there is a square with a line in it. Adjust the pile height until the paper comes to the line. Then adjust the air until the paper comes to the sheet separators. This will get you in a very close ballpark and small adjustments can be made from here. I was a Service Engineer on these machine for 20 years.

  • @thebigsleepavalanche7084
    @thebigsleepavalanche7084 Рік тому

    Shout out to ECC in Buffalo NY. I almost choked on my coffee when i heard that

  • @123tobiiboii123
    @123tobiiboii123 Рік тому

    Thank you for these resources, they're so invaluable. I'm a graphic designer and have always had a good knowledge of print but it's so nice to really see it be done and clearly represented step by step. I've recently been getting into printmaking lithography and it's interesting to see that arabic gum remains relevant even in the offset world.

  • @thanhdatnguyen2287
    @thanhdatnguyen2287 Рік тому

    Great presentation so clearly!

  • @cksudharshancksudharshan4573

    Sir, How we remove the bolt and it set sleped in blanket cylinder adjustment bolt RYOBI 2800 machine

  • @WLange-pp1dk
    @WLange-pp1dk Рік тому

    A very, very good summary! Thanks a lot!

  • @omangmutamar-uv1pc
    @omangmutamar-uv1pc Рік тому

    I wish i had a printing machine

  • @asishmal1477
    @asishmal1477 Рік тому

    Ki size ki price

  • @Manlam-mrlam
    @Manlam-mrlam Рік тому

    This printing press looks like a b dick

  • @onniesprintonnie1486
    @onniesprintonnie1486 Рік тому

    Steve my problem is the machine stays on lerge with out feedig papef

    • @stever4181
      @stever4181 Рік тому

      Lerge? Please rephrase your question.

  • @shivprintersmahwa5914
    @shivprintersmahwa5914 Рік тому

    Ruby offset printing machine

  • @fmforhad3593
    @fmforhad3593 Рік тому

    brother

  • @sumanchakraborty772
    @sumanchakraborty772 Рік тому

    Sir ji apsa milna chitihu

  • @weirdsciencetv4999
    @weirdsciencetv4999 Рік тому

    Wow this is a gem of YT channel! Subscribed!! Also, where can I find a good text on printing in general? I want to learn all this, I also want to starting making my own presses and prints as I go. What better way to learn than by replicating all that?

  • @weirdsciencetv4999
    @weirdsciencetv4999 Рік тому

    Do you know where one can attain bimetal offset plates?

  • @ryananthony4840
    @ryananthony4840 Рік тому

    I have one, and an AB Dick 9840

  • @ryananthony4840
    @ryananthony4840 Рік тому

    Ruby-lith!!! Haven't seen that in DECADES!

  • @jcdineshacharya2681
    @jcdineshacharya2681 Рік тому

    Hi how to adjust a run vacuum paper feeding please suggest me 3200 CD

  • @herlinaherlina2300
    @herlinaherlina2300 Рік тому

    Thank you

  • @mathioffset4357
    @mathioffset4357 Рік тому

    You contact number

  • @laxmanmangelkar1357
    @laxmanmangelkar1357 Рік тому

    VERY GOOD VIDEO SIR ,

  • @josephnemish5869
    @josephnemish5869 Рік тому

    Excellent video sir. Been printing for 10 years and still learning. Well done video man

  • @xXdaniellolXx
    @xXdaniellolXx Рік тому

    Great video, could you share the slides with us?

  • @iloveindia2366
    @iloveindia2366 Рік тому

    Sir I want job iam a operetor ryobi machine

  • @stevensuffoletto3700
    @stevensuffoletto3700 Рік тому

    September 2022 the Printing Program was eliminated due to lack of student enrollment. Covid had an impact the last 2 years.

  • @Mixytelle
    @Mixytelle Рік тому

    Merci beaucoup!

  • @user-hc9rt3sd1l
    @user-hc9rt3sd1l Рік тому

    محتاج واحدة

  • @omprakashsahu8409
    @omprakashsahu8409 Рік тому

    सर रेट बताएं और नंबर भी दो

  • @marciohogenelst
    @marciohogenelst Рік тому

    Please, could you send me the apresentation ? regards