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 2024-08-14 19:28:59

• Manages Preventive Maintenance system for building & equipment • Accountable for building & equipment repairs including contracting & scheduling outside services • Coordinates and participates in equipment installs or moves including contracting & scheduling outside services

Finally, the angled side lighting technique can also be deployed from longer working distances by utilizing the more intense linear, focused LL137 Line Light from Ai (Figures 5A & 5B).

• Set up, feed and operate screen presses efficiently referencing blueprints and job jackets, while maintaining high quality and performance standards. • Check for ink coverage and density, alignment and registration. • Production related trouble shooting. • Inspect printed materials or other images to verify quality. • Collect samples of materials or products for testing. • Clean-up of equipment at job completion. • Successfully cross train into other areas of the department, including prepress. • Additional duties as assigned.

If we examine the images more closely, we see that whereas the Coaxial Diffuse Light illuminates the label well (see Figure 4B), it is largely ineffective for uniquely lighting the pins against their background. The low angle techniques are very effective for pin count location, as well as PA of bent pins, which would either show up out of the expected position, reflect differently, or perhaps be missing altogether.

In the following inspection example, we are verifying the presence of a brass-colored metal screw holding the PCB in place on the base of a hard-drive disk.

• Positive attitude & influence • Ability to clearly communicate verbally and in writing • Highly organized and consistent • Excels with minimal supervision, self-directed • Ability to quickly adapt to change, cooperate with, and elicit cooperation from others • Must be able to work under pressure and remain flexible, with good work attendance • Commitment to quality and the quality improvement process

• Good eye for small detailed inspection • Able to sit or stand for long periods of time • Good organizational skills • Good basic math skills and be able to use a ruler • Some computer background

• Perform in-process inspection during printing operation • Assist press operator, including clean-up – keeping press downtime to a minimum • Operate all color computer equipment in the department

• High school diploma or equivalent a must • 1-2 years’ work experience working in a manufacturing facility • 1-2 years’ experience working with printing a plus

The use of a BALA (Broad Angle Linear Array) Light provides a solution, allowing for illumination of the pin block from the side (Figures 4E & 4F). Although the pin contrast using the BALA Linear Array is not as intense, this technique is more effective for illuminating the label in the inspection application. Thus, this approach offers dual advantages in this application: part access flexibility and a more efficient use of the system resources, achieved by mounting the light to the side and permitting two inspections from one image.

Each PCB may require multiple inspections per station, or potentially at multiple stations along the assembly process, due to of the variation in components and the type and number of inspections needed. Even relatively straight-forward presence/absence (PA) surface inspections can be difficult when inspecting PCBs, given all the variation.

If we examine a typical PCB, the most common PA inspections are of the board’s components and connector headers. Other inspections may include label and/or print and bar code OCR/OCV, as well as connector pin quality and orientation.

Qualifications • Able to work independently with good analytical & problem-solving skills • Good eye for small detail & color deficiencies • Superb mechanical, math & reading abilities • Quality focus • Strong organization & prioritization skills

• Strong mechanical aptitude. • Time Management – superior organizational and prioritization skills. • Problem solving aptitude by accurately defining, analyzing, breaking down, and solving complex problems. • Strong math skills needed. • Flexibility to meet changing requirements under challenging conditions. • Outstanding written and verbal communication skills. • Ability to work independently. • Proven team player. • Quick learner. • Driving desire for personal and organizational improvement. • Strong attention to detail and quality conscious. • Desire to own decisions and take responsibility for outcomes.

In this fashion, each specific color projection and an image grab can be cycled quickly at the same station. This includes white for color applications, minimizing the need for multiple single-inspection stations and their associated complexity, implementation time, materials, and manpower costs.

However, upon closer examination of the Diffuse Dome image, we notice a difference in contrast: whereas there is some contrast difference in the upper right section of Figure 2C vs. the lower right (due to the presence of the screw), there is more pronounced contrast from the use of the Coaxial Diffuse Light, despite the poorer overall scene uniformity. Why is this? Can we combine the best features of both the Diffuse Dome and Coaxial Diffuse lights?

Accurately follow work instructions for generating artwork • Sending art proofs to customers • Generating production files for screen printing and fabrication • Prepare files for outsourced parts (ETCH) per work instructions • Preflight and troubleshoot customer digital files, load fonts, inspect graphics, and make color separations (4 color process and spot colors), familiar with traps and bleeds • Output files to image setter; set line screens, resolution, and other press-specific settings • Prepare files for output to film & digital devices • Create / edit work instructions as required • Maintain inventory & order supplies for graphic department • Operate and assist in maintenance of graphics prepress equipment • Occasionally working with buyers to discuss prints and graphics • Other duties and responsibilities as assigned

• Mixing and preparation of inks for production (two shifts). • Accurate documentation of formula files. • Examine job orders to determine quantities, stock specification, colors or special printing instructions. • Verify the substrate and ink meet the specifications for a given job. • Color matching. • Monitor inventory levels on a regular basis, ordering or requesting additional supplies, as necessary. • R & D – Developing new ink applications. • Perform other duties as assigned.

Depending on application requirements, appropriately illuminating populated circuit boards (PCBs) for vision inspection can be challenging. PCBs are manufactured in a wide variety of sizes, shapes, finishes, colors, and with a whole host of different components, each with its own characteristics.

PCB visualinspectionchecklist

• Scheduling and managing workflow. • Communication – ability to effectively present information and respond to questions frommanagers, customers, and employees. • Strong attention to detail. • Organizational and prioritization. • Active Listening – Giving full attention to what other people are saying, taking time tounderstand the points being made, asking questions as appropriate, and not interrupting at inappropriate times. • Service Orientation – Actively looking for ways to help people. • Ability to manage multiple projects at one time and be flexible to meet changing requirements. • Problem solving skills to accurately define, analyze, break down, and solve complex problems. • Ability to work independently. • Customer friendly attitude.

The Plant Maintenance Tech has complete responsibility and accountability for building, grounds & equipment maintenance.

Another common type of LED backlighting for LCDs is local dimming. With local dimming, clusters of multiple LEDs are individually controlled. Most local dimming LCDs feature a similar arrangement of LEDs as direct-lit LCDs. In other words, they have a grid of LEDs rather than a perimeter of LEDs. The difference is that local dimming LCDs can control groups or clusters of LEDs separately than the other LEDs.

• High School Diploma • Graphics Degree or Art related Degree • Degree in electronics prepress or two years on the job experience

This is also achieved by deploying the high-intensity and small-footprint AL295 MicroBrite Bar Light (Figure 6), particularly beneficial when more part access flexibility is needed.

Another relatively common obstacle when using a Diffuse Dome Light is the requirement for the light and camera to be in close proximity to the object of interest (see Figure 2A). Furthermore, this geometry configuration is not always optimal for either ergonomic or access considerations.

It is also particularly challenging to inspect pins as they are typically recessed into the block or at right angles to the board face. An effective lighting technique for this application is low angle dark field, which can be circular (Figure 4C) or linear (Figure 4D).

• Exposure to contaminants or hazardous conditions with inks and chemicals. • Personal Protective Equipment includes safety glasses, gloves and lab jackets. • 100% standing position. • Time pressure.

Finally, there’s full array local dimming backlighting. This alternative backlighting technology is similar to direct lit backlighting. Both direct lit backlighting and full array local dimming backlighting feature a grid of LEDs. The same applies to local dimming as well. What is full array local dimming exactly? It’s a backlighting technology in which each LED is individually controlled.

• Good eye for small detail. • Ambitious, energetic, quality conscience. • Driven and results oriented. • Self-directed multi-tasker and works well under pressure. • Professional approach. • Team player – work with supervisors, co-workers, and subordinates in person.

• High school diploma or equivalent a must • 1-2 years’ work experience working in a manufacturing facility • 1-2 years’ experience working with printing a plus

• Exposure to contaminants or hazardous conditions with inks and chemicals. • Personal Protective Equipment includes safety glasses, gloves and lab jackets. • Majority of position is standing. • Time Pressure. • Importance of being exact or accurate.

• High school degree, GED, or equivalent. • Additional Graphic Arts education a plus. • Excellent physical condition and able to lift up to 50 lbs. • Ability to stand for long periods of time. • Good mechanical, math and reading abilities. • Be able to use a rule and caliper. • Analytical and problem-solving skills. • Good eye for small detail inspection & no color deficiencies. • Ability to read blueprints. • Dexterity and Arm-Hand Steadiness – ability to quickly move hands, arms, fingers to grasp, manipulate or assemble and the ability to keep hand and arm steady. • Superb organization and prioritization. • Coordination – adjusting actions in relation to others’ actions. • Operation and Control – controlling operations of equipment or systems. • Some computer knowledge. • Quality Conscious • Team Player.

• High school degree, GED, or equivalent required. Post high-school education preferred. • 2-3 years’ experience in an administrative, Customer Service and/or Inside Sales role. • Reading mechanical and electrical blueprints. • ERP / MRP system knowledge. • Strong computer skills including Excel, Power Point and Word Proficiency (Microsoft Office). • Manufacturing job shop exposure preferred, not required.

PCBboard inspection

• 2 – 3 years of formulating inks for the printing industry on plastics, aluminum or rigid substrates preferred. • Working with back lit color formulations. • Familiarity in using different types of color measurement tools. • Proficient in Excel and Word.

• Set-up & operate the digital printer producing graphic overlays • Set-up & operate screen printing press for back-up colors or textures • Check for ink coverage and density, alignment and registration • Production related trouble shooting

• Ability to read and interpret prints, drawing, schematics • Knowledge of electronics (PLC’s), pneumatics, hydraulics • Familiar with HVAC systems and air compressors

Figure 1A illustrates an image taken with a typical vision system configuration using a coaxially mounted (on-axis) Ring Light. Upon examination, there are multiple difficulties in using this image for the inspection: whereas the human visual system can see that a screw is missing in the lower right portion of the board, the vision system software may be more challenged.

• Printing operation on plastics, aluminum or rigid substrates preferred, not required. • Machine operation preferred, not required.

How might we improve on the high-angle lighting geometry given that the surface is specular? There are two useful full bright field lighting techniques for verifying the presence of the brass-colored screw: Diffuse Dome lighting or Coaxial Diffuse lighting (Figures 2A & 2B, respectively).

• High school degree, GED or equivalent • Additional Graphic Arts education a plus (Adobe Illustrator) • Digital printing experience a plus

• No color deficiencies. • Ability to read blueprints. • Analytical and problem-solving skills. • Dexterity and Arm-Hand Steadiness – ability to quickly move hands, arms, fingers to grasp, manipulate or assemble and the ability to keep hand and arm steady. • Superb organization and prioritization. • Coordination – adjusting actions in relation to others’ actions. • Operation and Control – controlling operations of equipment or systems. • Excellent physical condition and able to lift up to 50 lbs. • Ability to stand for long periods of time. • Some computer knowledge. • Good mechanical, math and reading abilities.

Responsible for performing installations and repairs (motors, starters, fuses, electrical power to machine etc.) for industrial equipment and machines in order to support the achievement of Nelson-Miller’s business goals and objectives:

Light-emitting diode (LEDs) are often used to illuminate the pixels within liquid-crystal displays (LCDs). All LCDs contain a layer of liquid pixels. With the exception of organic light-emitting displays (OLEDs), these pixels aren’t capable of illuminating themselves. Rather, they require illumination from an external system known as backlighting. Most LCDs use one of four types of LED backlighting as described below.

PCBinspectionmethods

Figures 2C and 2D depict the image results of lighting the part in question using the Diffuse Dome Light and Coaxial Diffuse Light. Upon initial inspection, a broad spectrum white Diffuse Dome illumination pattern is more uniform when compared to the Coaxial Diffuse illumination technique. This makes it better suited for creating uniform scene lighting, primarily because Diffuse Dome Lights project light from multiple directions and angles of incidence.

• Printing operation on plastics, aluminum or rigid substrates preferred, not required. • Machine operation preferred, not required.

• Perform highly diversified duties to install and maintain electrical apparatus on production machines and any other facility equipment (Screen Print, Punch Press, Steel Rule Die, Automated Machines, Turret, Laser Cutting Machines, etc.). • Provide electrical emergency/unscheduled diagnostics, repairs of production equipment during production and performs scheduled electrical maintenance repairs of production equipment during machine service. • Perform regular electrical preventative maintenance on machines, equipment, and plant facilities. • Read and interpret electrical manuals and work orders to perform required electrical maintenance and service. • Use a variety of hand and power tolls, code, diagrams and testing in performing duties. • Follow all projects through from start to finish while maintaining safe maintenance principles. • Comply with safety regulations and maintain clean and orderly work areas. • Forklift operation. • Other duties and responsibilities assigned.

• Perform inspections on incoming material or to release products to shipping • Process documentation such as test results, inspections, travelers, etc., and creating/moving the documentation on the network for transmittal to the customer • Provide support in quality related functions such as CARs, CAPAs, SCARs, and investigating customer returns (RMAs) • Perform and generate accurate First Article inspection reports in accordance with customer prints and specifications • Prepare customer required documentation & certificates (CofCs) • Perform other duties as needed or assigned

• Entering and confirming orders. • Following up with customers via email, phone or mail. • Inform customers of estimated delivery schedules, service contracts, warranties, or otherinformation pertaining to purchased products. • Work closely with production and shipping managing customer shipments and expedites. • Entering quotes for engineering to complete. • Handling Customer Complaints / RMA’s and investigation. • Completing open order reports and other various excel spreadsheets. • Compile Job Travelers. • Tracking and controlling sales orders. • Sending samples to customers. • Cold calling customer leads. • Potential customer visits to evaluate needs or to promote product or service sales. • Other tasks as assigned by Inside Sales Supervisor

Another typical PCB inspection is verifying connector block pin location/orientation and counts, as well as label bar codes and OCV/OCR. The challenge is to illuminate the pins uniquely, making them stand out against the background. We also notice upon review of the images taken with the previous techniques, while diffuse techniques work well for the board surface inspections, they may not be adequate for inspecting pins (Figures 4A & 4B).

Some LCDs feature direct-lit backlighting. Direct-lit backlighting is a type of LED-based backlighting that involves the use of LEDs in a grid pattern directly behind the pixel layer. It’s not the same as edge-lit backlighting. With edge-lit backlighting, the LEDs are placed around the perimeter or rim of the LCD. With direct-lit backlighting, the LEDs are placed behind the pixel layer. They are arranged in columns of rows to form a grid. During operation, the grid of LEDs will illuminate the pixel layer from behind.

The primary contrast differentiator between the screw tap and the surrounding green board is which color illumination is used; in this case, the board is green, but the screw pads are copper-colored. Based on our understanding of relationships on a color wheel of absorption vs. reflectivity (see “Color Application in Machine Vision” for more information), we can infer that the red Coaxial Diffuse Light was more effective in enhancing copper red on the green background than the broad-spectrum white Diffuse Dome Light (as illustrated in Figure 2C). We also tested the use of a red Diffuse Dome Light to improve image contrast, demonstrated in Figure 2E.

With direct-lit backlighting, all of the LEDs are controlled at once. With local dimming backlighting, clusters of LEDs can be controlled individually. And with full array dimming backlighting, each LED can be controlled individually. Fully array local dimming LCDs cost more than those using a different type of backlighting. Nonetheless, they provide excellent brightness and contrast that’s superior to their counterparts.

• HS Diploma or GED equivalent required • 2-year Electro-Mechanical degree preferred • 3-5 years of applicable experience in a manufacturing environment required • Experience with screen-printing presses & oven lines as well as light fabrication equipment such as steel rule die presses, laminators, lasers preferred

Because the board surface is coated and thus highly reflective, a high-angle lighting technique (Figure 1B) was deemed unsuitable for assessing specular reflective surfaces. This is due to the relationship of high-angle of incidence lighting on specular surfaces; since the angle of reflection is equal to the angle of incidence, high-angle lighting will reflect back directly into the camera, oftentimes obscuring surface detail. Ultimately, this lighting technique would not create feature-appropriate contrast for the intended inspection goal.

However, are other color lighting options better suited to different inspections on this PCB? Or perhaps different light techniques altogether?

PCB visualinspectionprocedure

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We work closely with our vendors to provide high-quality LED lighting for machine vision applications. Visit our PRODUCTS section to discover an LED lighting solution for your vision application and choose "CONFIGURE THIS LIGHT" to customize a light to meet your needs.

• High school degree, GED, or equivalent. • Additional Graphic Arts education a plus. • Color matching accuracy. • Numerical accuracy. • Organizational skills a must. • Visual color discrimination. • Ability to lift up to 75 lbs. • Ability to stand for long periods of time. • Mathematical skills a must, able to equate decimals and percentages. • Be able to use a ruler and caliper. • Analytical and problem solving. • No color deficiencies. • Ability to read blueprints. • An understanding of various industry color measurement instruments and ink rheology’s. • Superb organization and prioritization. • Creative thinker – ability to develop, design, or create new applications, ideas relationships, systems or products, including artistic contributions. • Ability to analyze and interpret technical information and procedures. • Team player – work with supervisors, co-workers, and subordinates in person, over the phone or via email.

• Exposure to contaminants or hazardous conditions with inks and chemicals. • Personal Protective Equipment includes safety glasses, gloves, lab jackets, hearing protection, hard hats, and steel toed boots. • Loud noise levels and exposure to hot and cold temperatures. • Outdoor work activities and weather exposure; including snow removal and roof work. • Majority of position is standing. • Time Pressure. • Importance of being exact or accurate. • Ability to lift up to 50 lbs. of product. • Must have a valid driver’s license.

• High School diploma or GED • Background in electronics a plus • Must be competent with Microsoft Word, Excel, and Outlook • Ability to analyze discrepant products to determine root cause, identify and implement corrective actions • Using basic inspection tools (calipers, micrometers, multimeters, optical comparators) • ISO 9001 Quality System • Interpreting engineering drawings, customer prints & electronic schematics/pinouts • Working in an Enterprise Resource Planning (ERP) system, Epicor a plus

PCBinspectionchecklist

A blue Diffuse Dome Light differentiates the board surface traces better than red (Figure 3A), but as we might expect, less effectively than green (Figure 3B). Therefore, we can then remain confident that a Diffuse Dome offers feature-appropriate contrast for the screw PA and also some trace inspection at this station. However, to accomplish both inspections from this station would require a change in illumination color. How might we work around this obstacle?

• Experience with digital and or screen printing, Acrobat, InDesign, Microsoft Office, AutoCAD, RIP software, EPICOR, Corel Draw (not a requisite but a plus) • Comprehensive knowledge Adobe Illustrator – CC preferred • Experience with Excel & Word • Understanding of the manufacturing process & needs of other departments, including Prepress experience • Understand Positive vs Negative film and the difference between first and second surface printing • Ability to manipulate and create own graphics for processes • Understanding of proper documentation and traceability • Ability to read and understand Job Traveler, Art Traveler, and ISO Procedure Manual • Receive files electronically & maintain operating system • Review Jobs for correct processes & information • Generate files for fabrication – laser, turret, steel rule die, Datron • Navigate EPICOR to verify process information, material, job location and part history

One common obstacle to using any diffuse or circular dark field lighting technique is that the light must be positioned directly above, and relatively close to, the features of interest – in turn blocking potential part access by personnel or robots (as alluded to earlier).

• Near Vision or ability to see details at close range • Visual Color Discrimination or ability to match or detect differences between colors, including shades of color and brightness • Deductive Reasoning or ability to apply general rules to specific problems to produce answers that make sense • Problem Sensitivity or ability to recognized there is a problem • Strong organizational and prioritization skills • Communication with Supervisors, Peers or Subordinates by phone, email or in person • Mechanical • Self – motivated, customer focused (external & internal customers) • Team player as well as being able to work independently • Accountable and able to make sound judgement and decisions

The unique variability in component and surface characteristics of PCBs make them particularly difficult to inspect in automated machine vision systems. However, by adjusting lighting geometry, wavelength, and intensity, you can find the ideal lighting solution to achieve appropriate image contrast.

Main Job Responsibilities / Functions: Summary: Service our customers as a member of our Printing team. Focus on Digital Printing of graphics running our HP5600 Indigo Digital Press.

PCBinspectionstandard

The most common type of LED backlighting for LCDs is edge-lit. Edge-lit backlighting refers to the use of LEDs around the perimeter of an LCD’s screen. Edge-lit LCDs still feature the same liquid pixels as other LCDs. For the backlighting, though, they feature a perimeter or rim of many small LEDs. These LEDs will illimunate the LCD’s pixels form the sides, thereby producing visible images.

• High school degree, GED, or equivalent. • 3-5 years of maintenance in a manufacturing job shop environment. • Previous electrical and mechanical background required – hands-on experience in schematic and electrical, diagrams / illustrations. • An AA degree in mechanical, electrical, or industrial maintenance a plus but not required.

Secondary Duties And Responsibilities: • Assist Manufacturing Engineer with equipment builds & new process development • Maintain database for PM records • Assist in continuous improvement projects • Other duties and responsibilities as assigned

• Printing operation on plastics, aluminum or rigid substrates a plus but not a requisite. • Machine operation a plus but not a requisite.

A potential solution in this instance is to utilize an RGB Diffuse Dome (Figure 3C), such as the DL097-RGB and a compatible multi-channel controller. The DCS-100E allows fully independent 3-channel control from the GUI application, a web browser interface, or through serial terminal commands via UDP and the Ethernet connection.

• Proven team player who likes to get hands dirty • Results oriented ready to take ownership of maintenance function • Self-directed, multi-tasker • Passionate about housekeeping • Great analytical and problem-solving skills • Superb organization and prioritization skills

A Flat Diffuse Light, such as the FD0808 (Figure 3D) is effective for illuminating the PCB from a longer working distance, while still offering Dome-like illumination, and thus also affording better near-object access for such activities as pick-and-place robotics and/or person-in-the-loop operations.

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